巴西专利BR112012029024B1 INSERTION TOOL FOR INSERTING A CATHETER

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专利摘要:
catheter staining device and method. an insertion tool for inserting a catheter into a patient's body is disclosed. the insertion tool unifies needle insertion, guide wire advancement, and catheter insertion in a single device. in one embodiment, the insertion tool comprises an envelope in which at least a portion of the catheter is initially disposed, a hollow needle extending distally from the envelope with at least a portion of the catheter pre-disposed over the needle, and a guide wire pre-arranged inside the needle. a guide wire advance set is also included to selectively advance the guide wire distally after a distal end of the needle in preparation for the distal advance of the catheter. in one embodiment, a catheter advance set is also included to selectively advance the catheter in the patient. each advance set may include a slide or other actuator that allows a user to selectively advance the desired component.
公开号:BR112012029024B1
申请号:R112012029024-0
申请日:2011-05-13
公开日:2020-03-10
发明作者:John W. Hall；Jason R. Stats；Mark A. Christensen；Daniel B. Blanchard
申请人:C. R. Bard, Inc.；
IPC主号:

专利说明:

INSERTION TOOL FOR INSERTING A CATHETER
CROSS REFERENCE FOR RELATED ORDERS
This application claims the benefit of the following Provisional Patent Application No.: US 61 / 345,005, filed on May 14, 2010, and entitled "Catheter insertion system including an integrated guidewire dilator;" 61 / 345,022, filed on May 14, 2010, entitled "Systems and methods for the placement of an intermediate catheter including a needle blunt system;" 61 / 372,050, deposited on August 9, 2010, and entitled "Catheter insertion tool including folding guide wire flaps" and 61 / 385,844, deposited on September 23, 2010, and entitled "Catheter insertion tool including guide wire feed ". Each of the aforementioned orders is hereby incorporated by reference in its entirety.
BRIEF SUMMARY
Quickly summarized, the modalities of the present invention are directed to an insertion tool for inserting a catheter or other tubular medical device into a patient's body. The insertion tool in one mode unifies needle insertion, guide wire advancement, and catheter insertion in a single device to provide a simple catheter placement procedure.
In one embodiment, the insertion tool comprises a casing in which at least a portion of the catheter is initially placed, a hollow needle extending distally from the casing with at least a portion of the catheter pre-arranged along the needle, and a thread pre-arranged guide inside the needle. A lead set is also included to selectively advance the guide wire distally past a distal end of the needle in preparation for the distal advance of the catheter. In one embodiment, a catheter advancement set is also included to selectively advance the catheter to the patient. Each advance set may include a slide or other actuator that allows a user to selectively advance the desired component.
In one embodiment, the catheter advancement set also includes a cable that is initially and removably attached to a catheter hub inside the housing. Distal movement of the cable by a user in turn moves the catheter distally from the envelope. The cable may include a needle safety component for isolating a distal needle tip when the needle is removed from the catheter and the distal tip received in the cable.
These and other features of modalities of the present invention will become more apparent from the following description and the appended claims, or can be learned by practicing modalities of the invention as set out below.
BRIEF DESCRIPTION OF THE DRAWINGS
A more specific description of the present description will be processed by reference to specific modalities of the same which are illustrated in the attached drawings. It is appreciated that these drawings describe only typical embodiments of the invention and are therefore not considered to limit their scope. Examples of embodiments of the invention will be described and explained with additional specificity and details through the use of the accompanying drawings in which: Figures IA and 1B are several views of a catheter insertion device according to one embodiment;
Figures 2A and 2B are several exploded views of the catheter insertion device of Figures IA and 1B;
Figures 3A and 3B show several views of a phase of using the catheter insertion tool of Figures IA and 1B according to an embodiment;
Figures 4A and 4B show several views of a phase of using the catheter insertion tool of Figures IA and 1B according to an embodiment;
Figures 5A and 5B show several views of a phase of using the catheter insertion tool of Figures IA and 1B according to an embodiment;
Figures 6A and 6B show several views of a phase of using the catheter insertion tool of Figures IA and 1B according to an embodiment;
Figures 7A and 7B show several views of a phase of using the catheter insertion tool of Figures IA and 1B according to an embodiment; Figure 8 shows a phase of using the catheter insertion tool of Figures IA and 1B according to an embodiment; Figure 9 shows a phase of using the catheter insertion tool of Figures IA and 1B according to an embodiment;
Figures 10A-10C show various views of a needle and environment safety component for a catheter insertion tool, according to an embodiment;
Figures 11A-11D are various views of a catheter insertion device according to an embodiment;
Figures 12A and 12B are several views of a portion of the catheter insertion device of Figures 11A-11D;
Figures 13A and 13B are several views of a portion of the catheter insertion device of Figures 11A-11.D;
Figures 14A-14F show various stages of using the catheter insertion tool of Figures 11A-11D according to an embodiment;
Figures 15A and 15B are several views of a catheter insertion device according to an embodiment; Figure 16 is a cross-sectional side view of an integrated guide wire / dilator for use with the catheter insertion device of Figures ISA and 15B;
Figures 17A-17C are various views of a split needle for use with the catheter insertion device of Figures 15A and 15B according to an embodiment; Figure 18 is a cross-sectional side view of a portion of the catheter insertion device of Figures 15A and 15B; Figure 19 shows a phase of using the catheter insertion tool of Figures 15A and 15B according to an embodiment;
Figures 20A and 20B show a phase of using the catheter insertion tool of Figures 15A and 15B according to an embodiment;
Figures 21A and 21B show a phase of using the catheter insertion tool of Figures ISA and 15B according to an embodiment; Figure 22 shows a phase of using the catheter insertion tool of Figures 15A and 15B according to an embodiment; Figure 23 shows a phase of using the catheter insertion tool of Figures ISA and 15B according to an embodiment; Figure 24 shows a phase of using the catheter insertion tool of Figures 15A and 15B according to an embodiment;
Figures 25A and 25B show several views of a blunt drawing of the guide wire and distal needle tip according to one embodiment; Figure 26 is a perspective view of a distal needle tip design according to an embodiment; Figure 27 is a perspective view of a catheter insertion tool according to an embodiment; Figure 28 is a cross-sectional view of a catheter insertion tool according to an embodiment;
Figures 29A and 29B are several views of a catheter insertion tool according to an embodiment; Figure 30 is a perspective view of a catheter insertion tool according to an embodiment; Figure 31 is a perspective view of a catheter insertion tool according to an embodiment;
Figures 32A-32I are various views of a configuration of a catheter insertion tool during use, according to an embodiment; and Figures 33A-33C are several views of a safety needle component according to an embodiment.
DETAILED DESCRIPTION OF THE SELECTED MODALITIES
Reference will now be made to the figures in which similar structures will be provided with similar reference designations. It is understood that the drawings are schematic and diagrammatic representations of exemplary modalities of the present invention, and are not limiting or necessarily drawn to scale.
For clarity, it should be understood that the term "proximal" refers to a direction relatively closer to a physician using the device to be described here, while the term "distal" refers to a direction relatively further from the clinical. For example, the end of a catheter placed inside a patient's body is considered a distal end of the catheter, while the end of the catheter remaining outside the body is the proximal end of the catheter. In addition, the terms "including", "has", and "having", as used herein, including in the claims, have the same meaning as the word "comprising".
The modalities of the present invention are generally directed to a tool for assisting with the placement within a patient of a catheter or other tubular medical device. For example, catheters of various lengths are typically placed in a patient's body in order to establish access to the patient's vascularity and allow infusion of medications or aspiration of body fluids. The catheter insertion tool to be described here facilitates the placement of such a catheter. Note that, although the following discussion focuses on placing catheters of a certain type and relatively short length, catheters of a variety of types, sizes and lengths can be inserted through the present device, including intermediate or extended IV catheters. peripheral, PICC, central venous catheters, etc. In one embodiment, catheters having a length between about 2.5 inches and about 4.5 inches can be placed, although many other lengths are also possible. In another embodiment, a catheter having a length of about 3.25 inches can be placed.
Reference is first made to Figures 1A-1B and 2A-2B, which show various details regarding a catheter insertion tool ("insertion tool"), usually represented in 10, according to one modality. As shown, the insertion tool 10 includes a wrapper 12 which in turn includes a top wrapper portion 12A separably mated to a bottom wrapper portion 12B. A needle hub 14 supporting a hollow needle 16 is interposed between housing portions 12A and 12B. The needle 16 extends distally from the needle hub 14 so as to extend through the body of the insertion tool 10 and a distal end of the wrapper 12. In another embodiment, the needle is at least partially hollow, while still enabling the functionality described here.
A notch 18 is defined by the needle wall 16 near the distal end thereof. The notch 18 allows blood to reflux out of the lumen defined by the hollow needle 16 since access to the patient's vascularity is achieved during the catheter insertion procedure. Thus, blood coming out of notch 18 can be seen by a clinician to confirm the proper placement of the needle in the vascular system, as will be explained later. The insertion tool 10 further includes a guide wire advance assembly 20 for advancing a guide wire 22 through needle 16 and into the patient's vascularization once needle access has been reached. The guide wire 22 is pre-placed within the lumen of the needle 16, with a proximal end of the guide wire positioned close to the proximal end of the needle hub 14, as best seen in Figures 1B and 2A. The guide wire advance assembly 20 includes a guide wire lever 24 that selectively advances the guide wire distally when using the insertion tool 10, such that the distal portion of the guide wire extends beyond the distal end of the needle 16. The guide wire lever 24 includes a lever flap 26 which engages the proximal end of the guide wire 22 so as to push the guide wire through the lumen of the needle 16. The guide wire advance assembly 20 further includes a slide 28 which is slidably attached to the top housing portion 12A. Two flaps 24A of the guide wire lever 24 operatively attach to the slide 28 so that the selective movement by a user of the slide results in corresponding movement of the lever 24, and, by extension, the guide wire 22. Engaging the lever flaps 24Λ to o, slide 28 also maintains slide attachment for housing 12. Of course, other coupling arrangements for translating user input to guidewire movement can also be employed. Suitable tracks are included in the top casing portion 12A, to allow sliding movement of the slide 28 and lever 24, including a strip 34 extending to the distal end of the housing 12. The slide 28 includes two arms 30 that partially surround on rails 32 defined by enclosure 12. In particular, during the initial distal advance of slide 28, arms 30 slide on a bottom enclosure rail 32A, best seen in Figure 5B. During the further distal advance of slide 28, the arms 30 slide past the bottom wrap rail 32A and over the top wrap rail 32B, best seen in Figures 2A and 3A. With the arms 30 of the slide 28 no longer engaged with the bottom shell rail 32A, the two shell portions 12A and 12B are capable of separating, as will be described below. The guide wire lever 24 includes a locking arm 36 resiliently arranged to spring up and engage a defined extension 36A within the top casing portion 12A when slide 28 has been completely distally slid. This prevents inadvertent retraction of the guide wire 22 once distally extended, which could otherwise cause unintentional separation of a distal portion of the guide wire by the distal tip of the needle 16 during the insertion procedure. Note that the coupling of the locking arm 36 with the extension 36A can provide tactile and / or audible feedback to the user in one embodiment, in order to indicate the complete distal extension of the guide wire 22. The insertion tool 10 also includes a set of catheter advance 40 to selectively advance in a distal direction a catheter 42, pre-arranged in the housing 12, and including a catheter tube 44 and a hub 46 at the proximal end thereof. As can be seen in Figures IA and 1B, the catheter 42 is partially and initially pre-arranged within a volume defined by the wrapper 12 so that the lumen of the catheter tube 44 is disposed along the needle 16, which it is in turn placed on the guide wire 22, as mentioned.
In particular, the catheter advance assembly 40 includes a cable 48 that defines a base 48A and two arms 50 that extend from the cable base. Each arm 50 defines a clamping surface 50A, 50B finger grippers, and a two-prong 50C. The clamping surfaces 50A and finger grips 50B allow the cable to be grasped or contacted by a user in order to selectively advance the catheter 42 in a distal direction while using the insertion tool 10 to insert the catheter into the patient's body. Teeth 50C engage corresponding raised surfaces on hub 46 in order to removably connect cable 48 to catheter 42.
Additional components are included in relation to the cable 48 of the catheter advance set 40. A plug, or valve 52, is interposed between the cable base 48A and the catheter hub 46 to prevent blood spillage when the catheter is inserted into the vascular system of the patient. A safety housing 54, including a needle safety component 56 therein, is removably attached to the cable 48 between the arms 50. Specifically, projections 60 included on the inner surfaces of the cable arms 50 engage with corresponding recesses 62 (Figure 10A) , defined in security wrap 54 to removably secure the security wrap to cable 48. A cap 56 supports needle security component 56 and covers the end of security wrap 54. As shown in Figure 1B, needle 16 initially extends through the above-mentioned components, in order, as shown in Figure 2B. More details on the operation of these components are given below.
Note that, in one embodiment, the outer diameters of the needle 16 and the catheter tube 44 are lubricated with silicone or another suitable lubricant to improve the slide of the catheter tube in relation to the needle and to assist in the insertion of the catheter into the body of the patient. The insertion tool 10 further includes a support structure 70 for stabilizing the needle 16 in the vicinity of its exit point from the housing 12. In the present embodiment, the support structure 70 includes an interface 72 of the top housing portion 12A and housing bottom 12B which is shaped to closely match the round shape of needle 16 and catheter tube 44. Interface 72 stabilizes needle 16 in order to avoid excessive "looseness" in the needle, thus improving user accuracy when initially accessing the vascular system of the patient.
As best seen in Figure 2A, the top casing 12A, the needle hub 14, and the bottom casing 12B include engagement features 68 to maintain the attachment of the proximal end of the casing 12, even when more distal portions of the casing are separate, discussed below. Note, however, that various types, sizes and numbers of the coupling characteristics can be employed to achieve this desired functionality.
Figures 3A-9 illustrate various stages of using the insertion tool 10 in placing catheter 42 in a patient's vascular system. For greater clarity, the various phases are represented with no effective insertion to a patient being shown. With the insertion tool 10 in the configuration shown in Figure 1A, a user grasping the insertion tool 10 first guides the distal portion of the needle 16 through the skin at an appropriate insertion site and accesses a subcutaneous vessel. The confirmation that appropriate vessel access has been achieved is evident through the blood splatter, that is, the presence of blood between the outer diameter of the needle 16 and the inner diameter of the catheter tube 44 due to the blood passing outside the notch 18 of the interior hollow the needle. Note that in one embodiment, the presence of blood in the safety casing 54, which, in one embodiment, is a transparent casing, can serve as an indicator of secondary blood squirt due to blood entering the casing from needle 16 when the vessel is accessed.
After the needle access to the vessel is confirmed, the guide wire advance set 20 is actuated, in which the slide 28 is advanced by the user's finger to advance the guide wire 22 distally (Figures 3A or 313), initially arranged inside of the hollow needle 16. Note that the guide wire is advanced distally by lever 24, which is operationally attached to slide 28. Note also that during the distal advance of slide 28, the slide arms 30 of the same travel along the tracks 32 on each side of the casing 12: first bottom casing rails 32A, then the top casing rails 32B.
Distal guidewire advance continues until slide 28 has slid its full travel length distally, resulting in a predetermined length of guidewire 22 extending beyond the distal end of needle 16, as shown in Figures 4A and 4B. In one embodiment, further distal advance of the slide 28 is prevented by contacting the lever flap 26 with a distal portion of the needle hub 14, as shown in Figure 4B. Figures 5A and 5B show that, in the complete distal advance of the slide 28, the slide arms 30 thereof are no longer engaged with the bottom shell tracks 32A, but only with the top shell tracks 32B. This in turn allows the housing portions 12A and 12B to separate, as can be seen below.
As seen in Figures 5A and 5B, once the guide wire 22 has been fully extended inside the patient's vessel (Figures 4A and 4B), the catheter advancement set 40 is actuated, in which the cable 48 is advanced distally by the user to make the catheter tube 44 slide along distal portions of the needle 16 and guide wire 22 and for the vascularization of the patient, through the insertion site. Figures 6'A and 6B show that, when the catheter is advanced through the cable 48, the housing portions 12A and 12B are easily separated to allow the catheter hub 46 to exit at the distal end of the housing 12 and the catheter a be inserted into the patient's vascularization to an appropriate degree.
Note that, as shown in Figures 7A and 7B, during removal of the catheter from the inside of the housing 12 of the insertion tool 10, the catheter slides distally along the needle 16 until the distal tip of the needle is received into the safety housing 54 and engaged with needle safety component 56. Figure 8 shows that the insertion tool 10 can then be separated from catheter 42, leaving cable 48 still attached to catheter hub 46. As mentioned, the cable 48 includes the valve 52 interposed between the catheter hub 46 and the cable 48. After removing the needle 16 and the safety wrapper 54 from the catheter 42, the valve 52 blocks the catheter lumen in order to prevent accidental blood spillage from catheter hub 46. As shown in Figure 9, cable 48 is removed from engagement with catheter hub 46 by pulling, twisting, etc. in order to disengage teeth 50C from the cable from the cube. An extension leg can be attached to the catheter hub and catheter 42 worn down by standard procedures. Then, the housing 12 and cable 48 of the insertion tool 10 can be discarded.
Figures 10A-10C give additional details in relation to the safety housing 54, as well as the needle safety component 56 and its interaction with the needle 16 in isolation of the distal end thereof. As shown, the security housing 54 is configured to allow the needle 16 to pass through it while using the insertion tool 10, as already described, leaving the housing through extension 74 at the distal end of the housing. The cap 58 is placed inside the proximal end of the safety housing 54 and is configured to support the needle safety component 56 in such a way that the needle 16 initially passes through the safety housing, the cover, and the safety component. needle. Note that the extension 74 of the safety housing 54 in the present embodiment extends into the valve 52 in order to open the valve while using the insertion tool 10, which eliminates unwanted friction between the valve and the needle. Figure 10C shows that the needle safety component 56 includes a curved body, or connecting element 80 through which the needle initially extends, and a friction element 82. As seen in Figure 10A, when needle 16 is removed of catheter 42 (Figure 8), the distal end of the needle is removed proximally through extension 74 and after the distal portion of the needle safety component so that the needle is no longer in contact with it. This allows the friction element 82 to cause the connecting element 80 to tilt slightly, thereby connecting the needle 16 in place and preventing its further travel with respect to the safety housing 54 and isolating the distal needle tip within the housing, so as to prevent the needle from inadvertently sticking. In the present embodiment, the friction element 82 comprises an appropriately sized 0-shaped ring. Suitable rings can be purchased from Apple Rubber Products, Lancaster, New York, for example. Note that more details about the needle safety component, its operating principles, and similar devices are disclosed in US Patent No. 6,595,955, 6,796,962, 6,902,546, 7,179,244, 7,611,485, and 7,618. 395, each of which is incorporated herein by reference in its entirety. Of course, other needle safety devices can be used to isolate the distal end of the needle. Reference is now made to Figures 11A-13B in which they describe a catheter insertion tool 110 according to an embodiment. Note that in this and following modalities, several characteristics are similar to those already described in connection with the above modality. As such, only the selected aspects of each modality below will be described. Insertion tool 110 includes a housing 112 defined by a top housing portion 112A and a bottom housing portion 112B that together partially surround catheter 42. A needle hub 114 supporting a distally extending needle 116 is included for disposal inside the housing 112 and positioned so that the catheter tube 44 of the catheter 42 is disposed on the needle. Note that partial catheter compartment by the insertion tool in this and other modalities allows a physician to manipulate the insertion tool with hands that are closer to the distal end of the needle than would otherwise be possible.
Figures 13A and 13B give more details about the needle hub 114, which is attached to the top housing portion 112A. A needle holder 126, included at the distal end of the needle hub 114, receives the proximal needle end 116 therein. Needle 116 is attached to the needle holder 126 by means of adhesive, welding, or other suitable method. Extensions 128 are included on opposite sides of needle holder 126 and are configured to be slidably received within corresponding slots 130 defined on the sides of the bottom housing portion 112B. This engagement allows the bottom shell portion 112B to slide distally from the top shell portion 112A.
A top rail 132 is included in the needle hub 114 and is configured to engage a corresponding groove 134 defined in the proximal portion of the top wrapper portion 112A so as to secure the needle hub to the top wrapper portion. A locking arm 136 is also included with the needle hub 114 and positioned to engage the back plate 124 when the bottom wrap portion 112B is slid distally to extend the guide wire from the needle 116, thereby preventing its retraction. Note that the guide wire 122 initially extends distally from the back plate 124 and through needle holder 126 and needle 116, as best seen in Figure 11D.
A guide wire advance assembly 120 is included to selectively advance a guide wire 122, initially placed inside the needle lumen, distally after the distal end of the needle 116. The guide wire advance assembly 120 includes the housing portion of bottom 112B to which the guide wire 122 is attached to a rear plate 124 proximal to it. As will be seen, the bottom shell portion 112B is slidable distally from the top shell portion 112A to allow distal selective advancement of the guide wire 122. Insertion tool 110 further includes a catheter advancement assembly 140 for selectively advance catheter 42 through needle 116. The advance assembly 140 includes a cable 146, initially and slidably arranged between the top and bottom casing 112A and 112B and removably attached to hub 46 of catheter 42. As best see Figures 12A and 12B, cable 146 includes two arms 150 to allow a user to selectively slide the cable in order to advance catheter 42. cable 146 further includes a recess 152 in which a needle safety component 156 is placed to isolate the distal end of the needle 116, when the needle is removed from catheter 42. Further details on the needle safety component are disclosed in US Patent No. 6,595,955, 6.79 6,962, 6,902,546, 7,179,244, 7,611,485, and 7,618,395, each incorporated by reference above. The insertion tool 110 further includes a support structure 170 for stabilizing the needle 116 near the distal end of the envelope 112. The support structure 170 in the present embodiment includes two tabs 172 that are pivotally connected to the distal portion of the envelope portion of bottom 112B. When closed, as seen in Figures 11D and 12A, the flaps 172 serve to stabilize the needle 116 to assist the user of the insertion tool 110 in inserting the needle into the patient. When opened (Figure 14E), flaps 172 provide an opening to allow catheter hub 46 to be removed from the distal end of housing 112, as will be detailed below. Before the bottom shell portion 112B is slid in relation to the top shell portion 112A, the flaps 172 are arranged in a strip 174 defined by the top shell portion. Other types and configurations of support structures can also be employed. The insertion tool 110 also includes clamping surfaces 176 on each side of the housing 112 to assist in using the tool during the catheter insertion procedure, detailed below.
Figures 14A to 14E describe various stages of using the insertion tool 110 to insert a catheter into a patient. With the insertion tool 110 in the configuration shown in Figure 14A, vascular access is achieved with the needle 116 through user insertion of the needle into the patient's body at an insertion site. Confirmation of vessel access can be achieved by observing blood reflux through a distal notch in needle 116, as described in the previous embodiment, or in other suitable ways.
Since the distal portion of the needle 116 is disposed within a patient's vessel, the guide wire 122 is extended past the distal end of the needle and into the vessel by distally advancing the bottom envelope portion 112B. Such an advance is achieved in the present embodiment by placing a user's fingers on the folded up tabs 172 of the bottom wrapper portion Π2Β and pushing the tabs distally, thereby widening the guide wire 122. The guide wire 122 is advanced until fully extended . The locking arm 136 of the needle hub 114 then engages the back plate 124 of the bottom shell portion 112B and prevents retraction of the guide wire 122.
During this stage, the cable 146 of the catheter advancement assembly 140 is distally advanced, by a user grasping one or both arms 150 thereof, in order to advance the catheter 42 distally through the insertion site and in the vascularization of the patient. This is shown in Figure 14C, where the catheter tube 44 is shown distally advancing along the needle 116 and the guide wire 122.
As shown in Figure 14D, continued distal advancement of catheter 42 causes catheter hub 146 to drive flaps 172 to open, thereby providing a suitable opening through which the hub can pass from insertion tool housing 112. Note that flaps 172 are formed such that contact with the catheter hub 46 impels each flap to fold outwards, as seen in Figure 14D. Note also that the flaps 172 are no longer disposed within the strip 174, due to the complete distal advancement of the guide wire 122 through the finger pressure applied to the flaps 172, as described above. Figure 14E shows that, with the flaps no longer engaged within the range 174, the top shell portion 112A and bottom shell portion 112B are capable of separating at the distal ends of them in such a way that the cable 146, still attached to the catheter hub 46, it can detach from the housing 112. Although not shown at this stage, the needle safety component 156 disposed in the recess 152 of the cable 146 isolates the distal end of the needle 116. The cable 146 can then be removed manually from catheter hub 46 (Figure 14F), and placement and cleaning of catheter 42 can be completed. The insertion tool 110, including the needle 116 isolated by the needle safety component 156 of the cable 146, can be safely discarded. Reference is now made to Figures 15A-18, in which it describes a catheter insertion tool 210 according to an embodiment. Insertion tool 210 includes a housing 212 defined by a top housing portion 212A and a bottom housing portion 212B that together partially surround catheter 42. A sliding needle hub 214 supporting a hollow needle extending distally 216 is slidably attached to housing 212. In particular, needle hub 214 includes strips 214A slidably engaging corresponding rails 218 defined in the top and bottom housing portion 212A, 212B in a manner described below. As shown in Figure 15A, needle hub 214 is positioned distally from housing 212 so that needle 216 extends through needle channel 224 (Figure 18) and out of a hole defined at a distal end of the top wrapper portion 212A so that the needle is positioned as shown in Figure 15A.
As seen in Figure 15A, housing 212 of insertion tool 210 includes a portion of catheter 42.
An integrated guide / dilator 220 is included and disposed within the lumen of catheter tube 44, as shown in Figures 15B and 16. The guide / dilator 220 includes a distal guide wire portion 220A and a portion of proximal dilator 220B . Thus configured, the guide wire / dilator 220 can not only serve as a guide wire to guide the catheter tube 44 through the patient's insertion site into the access vessel, but can expand the insertion site prior to insertion of the catheter through it. In another embodiment, no guide wire / dilator needs to be used. In one embodiment, it is considered that the guidewire / dilator 220 may extend proximally through the entire catheter 42 and include at a proximal end thereof a luer cap connectable to a proximal luer connector of the catheter. Note also that Figure 15A shows a sterile bag 217 connected to housing 212 in order to cover and isolate the proximal portion of catheter 42. For clarity, bag 217 is included only in Figure 15A, but could be included with the insertion tools of various configurations, in order to protect and isolate portions of the catheter.
As seen in Figures 17A-17C, needle 216 includes a needle groove extending longitudinally 226 extending from a starting point along the length of the needle to the distal end thereof. Figure 17B shows that groove 226 can be optionally wider proximally to more distal groove portions. Thus configured, the needle groove 226 allows the guide wire / dilator 220 to be inserted, sliding in relation to, and removed from the needle 216 during the operation of the insertion tool 210, described below. Note that the needle groove can extend the entire length of the needle, in one embodiment. 18 Figure 18 shows the way of introducing the guide wire / dilator 220 into the groove 226 of the needle 216 according to an embodiment, wherein the guide wire / dilator extends distally along a guide channel 222 defined in the top wrap portion 212A and into the hollow needle 216, which is arranged in the needle channel 224, through the needle groove. (The guide channel 222 is also seen in Figure 15B.) In this way, the guide wire / dilator 220 can be distally slid through the hollow needle 216 in order to extend beyond the distal end of the needle, while still being able to be removed from the needle through slot 226 when the guide / dilator and needle are separated from each other, as will be seen. Figure 18 also shows a support structure 270 for stabilizing the needle 216, including an interface 272 defined by portions of the top wrap portion 212A and bottom wrap portion 212b over the hole through which the needle extends. Of course, other support structures can be employed to provide needle stability to assist with needle insertion into the patient's vascular system. Figure 19 shows details of a lock 230 for needle hub 214, included in bottom shell portion 212B, to prevent further movement of the needle hub after being retracted, as described below.
Figures 19-24 show various stages of using the insertion tool 210 to insert a catheter into a patient. With the insertion tool 210 in the configuration shown in Figure 19, vascular access is obtained with the needle 216 by inserting the needle user into the patient's body at an insertion site.
Since the distal portion of needle 116 is disposed within a patient vessel, the guide / dilator wire 220 is manually fed through hollow needle 216 so as to extend past the distal end of the needle and into the vessel. Such an advance is achieved in the present embodiment by distally moving the envelope 212 and catheter 42 together while keeping the needle hub 214 stationary. The guide wire 122 is advanced distally a suitable distance, which in the present embodiment, includes the advance until the distal end of the envelope 212 reaches the site of insertion of the skin.
Figures 20A and 20B show that after the guide wire / dilator 220 has been distally extended into the vessel, needle 216 is removed from the vessel by proximally sliding needle hub 214 along rail portions 218A arranged in the housing portion top 212A. Proximal slide of the needle hub 214 continues until the hub engages the rail portions 218B of the bottom shell portion 212B and is completely slid to the proximal end of the shell 212, as shown in Figures 21A and 21B. Needle hub 214 engages lock 230 (Figure 20B) in order to prevent further distal movement of the needle hub or needle 216. In this position, needle 216 is fully retracted into the insertion tool housing 212 such that the distal end of the needle is securely isolated from the user (Figure 21B). Note that in one embodiment, a needle safety component can be added to the insertion tool to further isolate the needle tip. Note that the distal portion of the guide wire / dilator 220 remains in the patient's vessel, after having been able to separate from needle 216 during retraction, through needle groove 226.
During this stage, the bottom shell portion 212B (Figure 22) and the top shell portion 212A (Figure 23) are removed from catheter 42. The catheter 42 can then be inserted through the insertion site and into the patient's vessel. Note that the guide wire / dilator 220 is still disposed inside the catheter tube 44 and that the dilator portion assists the distal end of the catheter tube to enter the vessel by gradually expanding the insertion site and the entry point of vase.
As mentioned, in one embodiment, the proximal portion of catheter 42, including hub 46 and the connected extension leg, is covered by a sterile bag, which is attached to wrapper 212. The sterile bag can be removed after the catheter is completely inserted into the patient's vessel, or can be removed when housing portions 212A and 212B are removed. In Figure 24, the guide wire / dilator 220 is then removed from catheter 42 and the catheter dressed and finalized for use. The guide wire / dilator 220 and other portions of the insertion tool 210 are discarded.
Figures 25A and 25B illustrate details regarding a needle blunt system for isolating a distal end 316A from a hollow needle 316, according to an embodiment. As shown, the distal needle end 316A includes a chamfer which is configured such that its cutting surfaces are arranged in an inner diameter 318 of the needle 316. Thus, when an appropriately sized guide wire 320 is extended distally after distal end 316A of needle 316, the needle cutting surfaces are blocked by their proximity to the guide thread, thereby securely isolating the needle end from a user. In addition, blunt distal end 316A of needle 316 in this way prevents the needle end from damaging sensitive inner walls of the vessel after the needle tip is inserted into it. At this point, the distal end 44A of catheter tube 44 can then be advanced distally over needle 316 and guide wire 320. Figure 26 shows a needle end chamfer 316A according to another embodiment, including an additional thread component 319 Such a blunt system can be used in one or more of the insertion tools described here. Reference is now made to Figure 27 in which it describes a catheter insertion tool 410 according to an embodiment. Insertion tool 410 includes a housing 412 that partially surrounds catheter 42. The distally extending hollow needle 416 is arranged with housing 412 such that the needle extends out the distal end of housing 412. A guide wire feed assembly 420 is shown to selectively advance a guide wire 422, including a slide 428 that slides along a strip 430 defined in housing 412. The guide wire 422 is attached to slide 428 and extends proximally within housing 412 until it extends. folds, forming a curve of guide wire 422A, towards the distal end of the wrapper and passes into the hollow needle 416 through a proximal end 416A of it for selective distal advancement after the distal end of the needle through slide user activation . Distal advancement of the guide wire 422 out of the distal end of needle 416 is stopped when the curve of guide wire 422A engages the proximal end of needle 416A.
A catheter advance set 440 is also shown to selectively advance catheter tube 44 along needle 416, including a slide 448 that slides along strip 430, and a transport 450 placed inside housing 412 and operably connected to the slide 448. Transport 450 is initially engaged with catheter hub 46 in such a way that sliding distally from slide 448 causes the catheter to be advanced distally to the distal end of the housing. The insertion tool 410 further includes a support structure 470 for stabilizing the needle 416, including two ports 472 hingedly attached by means of pins to the distal end 412 of the housing. Ports 472 serve to stabilize needle 416 during insertion into the patient. Later, when catheter tube 44 and catheter hub 46 are advanced distally through slide 448, doors 472 are opened, allowing catheter 42 to pass through the doors and be separated by a user of insertion tool 410.
In the present embodiment, a wedge feature is included on the bottom surface of slide 428, the wedge feature being configured to push doors 472 open when the slide is slid distally, as described herein. Such a wedge feature or other suitable feature can be included in other embodiments described here as well.
After separation from insertion tool 410, catheter 42 can then be advanced and placed as needed within the patient by the user. Note that, although none of them are shown, a needle safety component can be included to isolate the distal end of the needle 416. In one embodiment, the distal slide of the guide wire slide 428 can partially open doors 472 in preparation for advancing catheter. Figure 28 shows the insertion tool 410 including a support structure 480 according to another modality, in which two semiconic shaped doors 482 are articulated connected to the enclosure 412 (through live hinges or another suitable conjunctive scheme) and configured to stabilize the needle 416. The transport of the insertion tool 410 in Figure 28 is also longer in relation to that of Figure 27. Thus, it is considered that several different support structures and configurations can be used to stabilize the needle at or near its exit point from the insertion tool housing. Reference is now made to Figures 29A and 29B in the description of a catheter insertion tool 510 according to an embodiment. Insertion tool 510 includes a sheath 512 that partially surrounds catheter 42. A hollow needle 516 distally extends from a needle hub 514 that covers a proximal end of sheath 512 so that the needle extends out of the distal end of the enclosure 512.
A guide wire advance assembly 520 is shown to selectively advance a guide wire 522, including a slide 528 that slides along a strip 530 defined in housing 512. The guide wire 522 is attached to slide 528 and extends proximally to the inside the housing 512 and out through a flexible cable 524, attached to the proximal end of the housing 512, through a top of two holes 514A defined in the needle hub 514. Near the proximal end of the flexible cable 524, the guide wire 522 folds to form a U-shaped guide wire fold 522A and distally extends backward into the casing 512 to pass into the hollow needle 516 through a bottom of the two needle hub holes 514A, for eventual distal advancement out of the distal end of the needle when slide 528 is selectively operated by a user. Such a distal advance of the guide wire 522 out of the distal end of the needle 416 is stopped when the curve of the guide wire 522Ά touches the holes 514A defined in the needle hub 514.
A catheter advance set 540 is also shown to selectively advance catheter tube 44 along needle 516, including a slide 548 that slides along strip 530, and a conveyor 550 disposed within housing 512 and operably connected to the slide . The conveyor 550 can be initially engaged with the catheter hub 46 such that sliding distally from slide 548 causes the catheter to be advanced distally to the distal end of the housing. In the present embodiment, a protrusion 522B is included in the guide wire 522 such that when the guide wire is distally advanced by the user actuation of the slide (guide wire advance) 528, the protuberance is advanced and engages an internal portion of the (advance of slide) slide 548. This in turn makes slide 548 advanced as well, resulting in distal advancement of catheter 42. In this way, the catheter can be advanced directly through slide 548, or indirectly through slide 528, in a modality . The insertion tool 510 further includes a support structure 570 for stabilizing the needle 516, including a plug 572 that includes a plug hole 574 defined therein through which the needle 516 extends. The plug 572 is attached through the strip 530 to the slide 528 and obstructs the distal end of the wrapper 512, thus serving to stabilize the needle 516 that passes through it, during needle insertion in the patient. Later, when guide wire 522 is advanced distally through slide 528, plug 572 also advances distally out of housing 512, thereby opening the distal end of the housing and allowing catheter 42 to pass through it. The catheter 42 can then be separated by the user from the insertion tool 510 and advanced to the final position by the user. Note that, although none of them are shown, a needle safety component can be included to isolate the distal end of needle 516. Note also that after plug 572 is removed from its initial position in housing 512, the catheter 4 4 and needle 516, no longer limited by the support hole plug 574, can move axially towards the center of the housing, in one embodiment. This goes for the modalities of Figures 30 and 31 as well. Reference is now made to Figures 30 in which it describes a catheter insertion tool 610 according to an embodiment. Insertion tool 610 includes a wrapper 612 that partially surrounds catheter 42. Hollow needle 616 extends distally from a needle hub 614 that covers a proximal end of wrapper 612 so that the needle extends out of the end distal from housing 612. Needle 616 includes a longitudinally extending proximal groove 616A extending from needle proximal end 616 to a distal end 616B of the groove.
A guide wire advance assembly 620 is shown to selectively advance a guide wire 622, including a slide 628 that slides along a strip 630 defined in housing 612. Guide wire 622 is attached to slide 628 and extends proximally to the inside the housing 612 until it bends, forming a curve of U-shaped guide wire 622A, towards the distal end of the housing and passes into the hollow needle 616 through the proximal groove 616A thereof for selective distal advancement after distal end of the needle through user actuation of the slide. Note that the distal advance of the slide causes the slide 628 to separate from the housing 612 while it is still being attached to the guide wire 622. Distal advance of the guide wire 622 out of the distal end of needle 616 is interrupted when the guide wire curve 622A engages the distal end 616B of the proximal groove 616A of the needle.
A catheter advance assembly 640 is also shown to selectively advance catheter tube 44 along needle 616, including a transport 650 disposed within housing 612 and operably connected to slide 628 such that the slide's performance distances the wire so far guide 622 and transport 650. Transport 650 is not initially engaged with the catheter hub 46, but engages the hub after a distal advance amount. This in turn causes catheter 42 to be advanced distally to the distal casing end. The insertion tool 610 further includes a support structure 670 for stabilizing needle 616, including a plug 672 that includes a plug hole 674 defined therein through which the needle 616 extends. The plug 672 is attached through the strip 630 to the slide 628 and occludes the distal end of the wrapper 612, thus serving to stabilize the needle 616 that passes through it, during needle insertion in the patient. Later, when guide wire 622 is advanced distally through slide 628, plug 672 also advances distally out of housing 612, thereby opening the distal end of the housing and allowing catheter 42 to pass through it. The catheter 42 can then be separated by the user from the insertion tool 610 and advanced to the final position by the user. Note that, in one embodiment, the carrier 65 0 may include a needle safety component to isolate the distal end of the needle 616. Reference is now made to Figure 31 in which it describes a catheter insertion tool 710 according to one embodiment . Insertion tool 710 includes a housing 712 that partially surrounds catheter 42. The hollow needle 716 extends distally from a needle hub 714 that covers a proximal end of housing 712 so that the needle extends out of the end distant from enclosure 712.
A lead set 720 is shown to selectively advance a guide wire 722 and catheter 42. The lead set 720 includes a wheel 730, selectively rotatable by a user, which is attached via a filament 726 or another component suitable for transportation 750. The guide wire 722 is attached to the conveyor 750 and extends proximally inside the housing 712 and out through a flexible cable 724, attached to the proximal end of the housing 712, through one of two holes defined in the hub. needle 514 (similar to holes 514A in needle hub 514 of Figures 29A, 29B). Near the proximal end of flexible cable 72 4, the guide wire 722 folds to form a U-shaped guide wire fold 722A and extending distally back into the housing 712 to pass into the hollow needle 716 through the other of the two holes defined in the needle hub 714 for possible distal advancement out of the distal end of the needle when the wheel 730 is selectively driven by a user. Such a distal advance of the guide wire 722 out of the distal end of the needle 716 is stopped when the curve of the guide wire 722A touches the aforementioned holes defined in the needle hub 714. The advance assembly 720 selectively advances the catheter tube 44 through the needle 716 and includes the aforementioned transport 750 disposed within the casing 712 and operatively connected to the wheel 730 through the filament 726 such that rotation of the wheel distances the transport 750 forward. 0 guide wire 722, a proximal end of which being attached to the transport 750, is also advanced distally through the needle, as described above. Note that, in one embodiment, the wheel 730, due to the non-rigid filament 726 connecting the wheel for transport 750, ensures that the guide wire 722 is advanced only distally, and proximally non-retractable.
Distal advance of the conveyor 750 makes the transport - which is not initially engaged with the catheter hub 46 - engaging the hub after a quantity of the distal advance. This in turn causes catheter 42 to be advanced distally to the distal end of the envelope. The insertion tool 710 further includes a support structure 770 for stabilizing the needle 716, including a port 772 hingedly attached to the distal end of the wrapper 712 and includes a hole 774 inside it to allow the needle 716 to pass through it. Port 772 serves to stabilize needle 716 during insertion into the patient. Later, when catheter tube 44 and catheter hub 46 are advanced distally by wheel 730 and transport 750, port 772 is pushed open by the hub, allowing catheter 42 to be separated by the user from the insertion tool 710. Catheter 42 can then be advanced for final placement within the patient by the user. Note that, although none of them are shown, a needle safety component can be included to isolate the distal end of the needle 716. Reference is now made to Figures 32A-32I in the description of a catheter insertion tool 810 according to a modality. Insertion tool 810 includes a sheath 812 which, at least partially, surrounds catheter 42. Hollow needle 816 extends distally from a needle hub 814 enclosed within sheath 812 so that the needle initially extends outwardly from the distal end of the wrapper 812. Needle 816 includes a distal groove 816A, similar to the previously described needle groove 226 (Figures 17A-17C), to allow a guide wire / expander 822, similar to the guide wire / expander described above 220 (Figure 16) to be removably inserted into it. The catheter 42 is disposed on the guide wire / dilator 822. The needle hub 814 further includes a needle retraction system 818 to selectively retract the needle 816 into the envelope 812, in order to isolate the distal end of the needle from the user of a safe way. The retraction system 818 includes a spring 819, or other suitable retraction device, operably coupled to needle 816 to effect needle retraction.
A lead set 820 is shown to selectively advance the guide wire / dilator 822, as well as catheter 42. The lead set 820 comprises a slide 828 which moves within a range 830 defined in housing 812. Slide 828 is operably attached to a toothed bar 824 slidably arranged within the housing 812. The toothed bar 824 includes a plurality of upper teeth 826 for advancing the selective catheter, and at least one lower tooth 826A for actuation of a retraction trigger 880 of the system needle retraction 818, as will be described. The hub 46 of the catheter 42 placed inside the housing 812 has removably attached to it a cap 834 including a pin 836 for engaging the upper teeth 826 of the toothed bar 824. The insertion tool 810 further includes a support structure 870 for stabilizing needle 816, including a casing hole 872 defined by the distal end of casing 812. Casing hole 872 is sized to provide stability for needle 816 at its point output from the enclosure.
Figures 32A-32I show various stages of using the insertion tool 810 when inserting a catheter into a patient. With the insertion tool 810 in the configuration shown in Figure 32A, vascular access is achieved with the needle 816 through user insertion of the needle into the patient's body at an insertion site. Blood reflux can be observed through distal notch 816A of needle 816 to confirm proper placement of the distal end of the needle within the patient's vessel. As shown in Figure 32B, slide 828 is slid distally to advance guide wire / dilator 822 a distal portion of which is predisposed inside the needle 816 through distal groove 816A distally out of the distal end of the needle and into the vessel of the patient. As shown, the guide wire / dilator 822 is advanced directly through the toothed bar 824, which is moved by the slide 828. In particular, one of the upper teeth 826 of the toothed bar 824 engages the pin 836 of the cap 834 placed on the catheter 46. Thus, when cap 828 and toothed bar 824 are moved distally, catheter 42 and guide wire / dilator 822 disposed therein are also moved distally, as shown in Figure 32B. Similar ratchet movement occurs in successive steps as well.
Sliding the slide 828 in the phase shown in Figure 32B also causes the bottom teeth 826A of the toothed bar 824 to engage the retraction trigger 880 of the needle retraction system 818. This in turn allows the spring 819 to expand and retract the needle 816 and the retraction system 818 into the wrapper 812 so that the distal needle tip is isolated from the user inside the wrapper. Figure 32C shows the slide 828 returning to its initial position, which causes the toothed bar 824 to also return to its initial position. Since the pin 836 of the cap 834 connected to the catheter hub 46 is tilted distally, however, the teeth 826 of the toothed bar slide after no retraction of the catheter 42 such that the catheter remains in position.
In Figure 32D, the slide 828 is again advanced distally, which causes the proximal upper tooth 826 of the toothed bar 824 to engage the cover pin 836 and still advance the guide wire 822 / dilator distally into the vessel. As it is disposed on the guide wire / dilator 822, catheter 42 at present or in a successive phase is also advanced into the vessel, depending on the length of the catheter, distance from the insertion site, etc. Slide 828 is subsequently retracted to its initial position, as shown in Figure 32E. Note that the ratchet retraction can be activated by the user or automatically activated by a suitable system included in the insertion tool 810.
In Figure 32F, slide 828 and toothed bar 824 are again advanced distally, resulting in additional distal advancement out of wrapper 812 of guide wire / dilator 822 and catheter 42. Slide 828 is subsequently retracted to its initial position, as shown in Figure 32G. In Figure 32H, slide 828 and toothed bar 824 are distally advanced one final time, resulting in almost complete distal advancement of guide wire / dilator 822 and attached catheter 42 from housing 812 of insertion tool 810. In this phase, the hub 46 of catheter 42 can be grasped and the catheter removed from insertion tool 810, which can then be discarded. The final positioning of catheter 43 within the vessel can then be performed manually by the user. The cap 834 is also removed from the catheter hub 46.
Figures 33A-33C show details of a needle safety component for isolating distal end 16A of needle 16, the needle including distal notch 18 as discussed above in connection with Figures 1A-10C, according to an embodiment. As shown, a security casing 954 including a hinged door is included so as to pass over the needle 16. Two needle security components 956 are arranged in opposition within the security casing 954 and each still also passes through the needle 16 Each needle safety component includes a base 958 defining an orifice through which the needle 16 passes and a plurality of arms 960. The arms 960 extend from the base 958 and converge towards each other in a tapered manner. so that one end of each arm touches the needle surface. The arms 960 are configured to engage the notch 18 defined in the distal portion of the needle 16 and prevent further movement of the needle 16 with respect to the needle safety component 956. In particular, each arm 960 compressively engages the outer surface of the needle 16 as that when one of the arms meets the needle notch 18, the arm will descend slightly into the notch in order to lock the needle 16 in place in relation to the needle safety component 956. Two syringe safety components 956 are arranged inside the security housing 954 in order to prevent additional needle movement in both directions, distally or proximally. Thus, the distal end 16A of needle 16 is securely insulated within security housing 954, as seen in Figures 33A-33C. Note that the needle safety component described here is useful for insulating a needle even when the guide wire 22 still extends through it, as can be seen in Figure 33C, for example.
In other embodiments, only one needle safety component, as described above, can be used. Thus, the needle safety component described herein serves as an example of a variety of needle safety components that can be employed in connection with the present description.
It is recognized that, in one embodiment, the insertion tool may include a sterile sheath or bag that is disposed along a distal portion of the catheter that extends distally from the insertion tool housing in order to isolate the catheter. The needle, pre-arranged inside the catheter and retractable into the insertion tool casing, can extend from the bag to have vascular access. Thereafter, the bag can be compressed towards the envelope when the catheter is advanced into the vascularization, then discarded once the catheter is inserted completely. In one embodiment, the bag may include a clamping handle or other device, which helps to grip the catheter or needle through the bag during insertion. In addition, note that the insertion tools described here may include a cap or other protective device that is removably attached to the insertion tool before use, in order to preserve the sterility of the needle and catheter.
Modalities of the invention can be carried out in other specific ways without departing from the spirit of the present disclosure. The described modalities, should be considered in all aspects only as illustrative and not restrictive. The scope of the modalities is therefore indicated by the appended claims and not by the previous description. All changes that come within the meaning and scope of equivalence of the claims must be embraced within their scope.

权利要求:
Claims (23)
[1]
1. Insertion tool for inserting a catheter into a patient's body, characterized by the fact that it comprises: a housing (12) in which at least a portion of the catheter (42) is initially arranged; a needle (16) at least partially hollow extending distally from the envelope, at least a portion of the catheter pre-arranged over the needle; a guide wire (22) pre-arranged inside the needle, a lead set (20) to selectively advance the guide wire distally after a distal end of the needle in preparation for the distal advance of the catheter, and a catheter advance set (40) comprising a cable (48) coupled to the proximal end of the catheter, the cable extends from the housing and slides relative to the housing to transition the catheter distally from a first position to a second position.
[2]
2. Insertion tool, according to claim 1, characterized by the fact that the advance set includes at least one mobile actuator per user (28), in which, preferably, the actuator also advances at least a portion of the catheter after a distal end of the needle, in a phased form or in unison, with the distal advancement of the guide wire, a distal end of the guide wire being staggered in relation to a distal end of the catheter.
[3]
Insertion tool according to claim 1 or 2, characterized in that the feed set includes a guide wire feed set (20) and a catheter feed set (40), preferably each feed set including an actuator, in which the catheter advancement assembly (40) preferably includes a cable (48) that is initially and removably attached to a catheter hub inside the housing, where the distal movement of the cable moves the catheter distally distally from the housing, and the handle includes a needle safety component (56) to isolate a distal tip of the needle when the needle is removed from the catheter, wherein, preferably, the needle safety component mechanically insulates the tip distal needle.
[4]
Insertion tool according to any one of claims 1 to 3, characterized in that the hollow needle distal tip includes a cutting surface arranged in the outer diameter of the needle lumen so that a guide wire extends distally after the distal tip of the needle serves to isolate the cutting surface from a user.
[5]
Insertion tool according to any one of claims 1 to 4, characterized in that the housing allows a user to grasp the housing close to a needle exit point from a distal end of the housing, and in which an advance set actuator includes at least one of a slide, a wheel, and a ratchet mechanism.
[6]
Insertion tool according to any one of claims 1 to 5, characterized in that the housing includes at least a first housing portion (12A) and a second housing portion (12B), the housing portions being separable to allow the catheter to be removed from the housing.
[7]
Insertion tool according to any one of claims 1 to 6, characterized in that it further comprises a needle support structure for stabilizing a portion of the needle that extends distally from the wrapper, wherein, preferably , the needle support structure includes at least a portion of the housing, a component hingedly connected to the housing, and a removable plug.
[8]
Insertion tool according to any one of claims 1 to 7, characterized in that it further comprises a locking component (136) which prevents the proximal movement of the guide wire after the guide wire has been distally advanced.
[9]
Insertion tool according to any one of claims 1 to 8, characterized in that the distal advance of the guide wire is interrupted by engaging a portion of the guide wire with a split portion of the needle.
[10]
Insertion tool according to any one of claims 1 to 9, characterized in that the needle is retractable into the housing after use.
[11]
11. Insertion tool according to any one of claims 1 to 10, characterized by the fact that the needle further includes a notch (18) close to a distal end close to the needle, the notch allowing reflux of blood to be observed.
[12]
Insertion tool according to any one of claims 1 to 11, characterized in that the housing includes a top housing portion (12A) and a bottom housing portion (12B) separably attached to each other, wherein the guide wire feed assembly includes a user-actuated slide slidably attached to the top casing, and where the slide's distal slide allows at least partial separation of the top and bottom casing portions.
[13]
13. Insertion tool according to claim 12, characterized in that the slide of the guide wire advance assembly is slidably attached to at least one of the top and bottom housing portions by means of a rail , in which the slide is operatively attached to the guide wire by means of a lever, the lever also including a locking flap to prevent the slide from retracting after distal advance of the guide wire.
[14]
14. Insertion tool according to claim 12, characterized in that the cable is slidably arranged between the top and bottom shell portions and is slidable to distally advance the catheter in such a way that the catheter and cable can separate from the needle and the insert tool housing, wherein the tool preferably comprises a support structure including an interface defined by the top and bottom envelopes close to the needle portion distally extending from the envelope, wherein, preferably, the catheter advance assembly cable includes a needle safety component to isolate a distal tip of the needle, and the cable preferably further includes a blood control valve.
[15]
Insertion tool according to any one of claims 1 to 14, characterized in that the catheter comprises a catheter tube (44) and a hub (46), the hub and a proximal portion of the catheter tube being initially arranged in the insertion tool housing.
[16]
Insertion tool according to any one of claims 1 to 15, characterized in that a housing includes a top housing portion slidably engaged with the bottom housing portion, the housing having at least one arrangement thereon. a cube and a proximal portion of the catheter catheter tube; wherein the needle is attached to the top casing portion and distally extending from the casing, the needle passing through a lumen of the catheter; wherein a guide wire attached to the bottom wrap portion and disposed within the needle, where in the feed assembly the bottom wrap portion is slidable with respect to the top wrap portion to allow distal advancement of the guide wire after distal needle tip when the bottom wrap portion is selectively moved distally; and a catheter advancement cable operatively attached to the catheter and configured to advance the catheter distally over the needle after the distal extension of the guidewire to insert a portion of the catheter into the patient's body.
[17]
17. Insertion tool according to claim 16, characterized in that a proximal needle end is mounted on a needle hub (14), the needle hub attached to the top casing portion, the needle hub including extensions that are slidably arranged in defined grooves in the bottom wrap portion for distal movement of the bottom wrap portion with respect to the top wrap portion for the distal advancement of the guide wire.
[18]
18. Insertion tool according to claim 17, characterized in that the support structure includes first and second flaps hingedly attached to the bottom housing portion, each flap received in a defined range in the top housing portion before of the guide wire to be advanced distally so that the flaps stabilize the needle, in which the flaps are able to open after the guide wire and catheter have been advanced distally so as to allow the catheter to separate from the envelope, in which preferably the first and second tabs further define a slide actuated by the user to advance the guide wire distally.
[19]
19. Insertion tool according to any one of claims 1 to 15, characterized in that it comprises: a housing including a top housing portion and a bottom housing portion, wherein a needle hub slidably engaged in the wrapper; wherein a at least partially hollow needle is attached to the needle hub and initially configured to extend from a distal opening of the envelope, the needle including a groove extending proximally at a predetermined distance from the distal end thereof; wherein the guide wire includes a proximal portion pre-arranged inside the catheter and a distal portion pre-arranged inside the needle through its opening, where the guide wire can be advanced distally to extend beyond the distal end of the needle after the needle is inserted into a patient, and the catheter can be advanced distally over the guidewire into the patient after the needle has been removed from the patient.
[20]
20. Insertion tool according to claim 19, characterized in that the needle groove varies in width along its length and the proximal portion of the guide wire includes an integrated dilator portion with a diameter greater than the diameter of the distal portion of the guidewire.
[21]
21. Insertion tool according to claim 19, characterized by the fact that the needle hub is configured so that the needle hub's proximal slide retracts the needle into the housing and allows the top and bottom housing portions separate from each other in such a way that the catheter can be removed from the housing.
[22]
22. Insertion tool according to claim 19, characterized in that a guide channel is defined in the bottom wrap portion to provide a transition from the distal portion of the guide wire from the bottom wrap portion inward of the hollow needle through the needle groove.
[23]
23. Insertion tool according to claim 19, characterized in that at least a portion of the needle groove is dimensioned to allow removal of the needle thread when the needle is retracted from the needle hub and, where a sterile bag is disposed over at least a portion of the catheter.

类似技术:

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同族专利:

公开号 | 公开日

JP2020199285A|2020-12-17|

JP6759261B2|2020-09-23|

CN102939129B|2015-03-25|

JP6243735B2|2017-12-06|

ES2714249T3|2019-05-27|

CN102939129A|2013-02-20|

JP2018118079A|2018-08-02|

MX2012013110A|2013-03-05|

WO2011143621A1|2011-11-17|

CA2799360A1|2011-11-17|

CN104689456B|2018-07-13|

JP2013529111A|2013-07-18|

EP2569046A1|2013-03-20|

CN104689456A|2015-06-10|

EP2569046B1|2018-12-05|

EP2569046A4|2017-12-06|

CA2799360C|2018-11-20|

MX341401B|2016-08-18|

EP3473291A1|2019-04-24|

BR112012029024A2|2016-08-02|

JP2016193207A|2016-11-17|

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法律状态:
2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

2020-01-07| B09A| Decision: intention to grant|

2020-03-10| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/05/2011, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

US34502210P| true| 2010-05-14|2010-05-14|

US34500510P| true| 2010-05-14|2010-05-14|

US61/345,005|2010-05-14|

US61/345,022|2010-05-14|

US37205010P| true| 2010-08-09|2010-08-09|

US61/372,050|2010-08-09|

US38584410P| true| 2010-09-23|2010-09-23|

US61/385,844|2010-09-23|

US41524810P| true| 2010-11-18|2010-11-18|

US61/415,248|2010-11-18|

PCT/US2011/036530|WO2011143621A1|2010-05-14|2011-05-13|Catheter placement device and method|

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