• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    USEFUL DEVICE FOR COLLECTING BODY FLUID FROM A PATIENT. A non-reusable device for collecting body fluids, such as vascular blood from a patient, the device being configured, for example, to receive a blood collection tube equipped with a retractable needle by a rotatingly mounted protruding ring that is released during retraction compressed a trigger pivotably connected to the body of the device to rotate the projecting ring, thereby the needle holder is guided to a ratration cavity arranged within the trigger, and the front tip of the needle is retained within the body of the device.
    公开号:BR112013002233B1
    申请号:R112013002233-7
    申请日:2011-07-20
    公开日:2020-11-03
    发明作者:Thomas J. Shaw；Mark Small；Ni Zhu
    申请人:Retractable Technologies, Inc.；Thomas J. Shaw；
    IPC主号:
    专利说明:

    RELATED ORDER CROSS REFERENCE
    [001] This application is a continuation-in part of pending US Patent Application 12 / 846,402 filed on July 29, 2010 which is a continuation-in part of US Patent Application Pending 12 / 136,462, filed on July 10, 2010 June 2008. BACKGROUND OF THE INVENTION 1. Field of the Invention
    [002] This invention relates to a medical device that is useful for collecting body fluids from a patient and, more particularly, to a vascular blood collection device that is not reusable, and that provides protection against accidental needle sticks. 2. Description of Related Art
    [003] Conventional devices used to suck vascular blood or other body fluids from a patient leave the tip of the needle exposed when it is removed from the patient, thereby subjecting device users to possible needle sticks and contamination by contact with pathogens that are present in the fluid. A device is needed that provides greater protection, both for the user and the patient, that is not susceptible to reuse in other patients, that is convenient to use, that can be used, for example, with conventional blood collection tubes, and that can be manufactured reliably in large volumes at relatively low cost. That device is disclosed in this order. SUMMARY OF THE INVENTION
    [004] The invention disclosed here is a medical device that can be used to aspirate blood and other body fluids from a patient or animal using conventional collection tubes having a typically rubber elastomeric plug at one end. The forward extending end of the device desirably has a sharp needle tip that is insertable, for example, into a patient's vein. The rear end of the needle also desirably has a sharp needle tip that can be inserted through the elastomeric plug, usually a rubber plug, that seals the open end of a blood collection tube. The rear end of the needle is initially lined with a flexible elastomeric sheath that can be penetrated by the needle tip extending backwards and then pushed forward and collapsed as the needle tip also penetrates the tampon to establish communication of fluid through the needle between the patient's vein and the inside of the blood collection tube. The collapsible elastomeric sheath on the rear-facing needle tip also prevents fluid from escaping out of the rear of the needle before the needle is inserted into the blood collection tube. Once the desired volume of fluid has been collected, and as the collection tube is pulled out of contact with the needle tip, the collapsed elastomeric sheath expands simultaneously to its original position covering the needle tip. This prevents any blood remaining on the needle from leaving the needle or the back of the device before retraction.
    [005] Another desirable feature of the present invention is that the needle tip extending forward can be retracted into the body of the device in order to prevent accidental needle sticks. This retraction is desirably initiated without first removing the needle from the patient's body, pressing a trigger that is articulated near the rear of the device. When the front end of the trigger is pressed relative to the device body, the needle tip extending backwards is propelled by a retraction spring compressed in a retraction cavity within the trigger. After retraction the spring expands during needle retraction, the front needle tip remains inside the device body.
    [006] Another desirable feature of the present invention is the release mechanism that is used to initiate needle retraction. Prior to retraction, the needle is attached to a needle holder which is propelled backwards by a compressed retraction spring, and is held in that position by a projecting ring rotatably mounted within the device body. As the trigger is pressed to initiate needle retraction following the collection of body fluid, the trigger comes into contact with a protrusion projecting radially from the projecting ring, causing the projecting ring to rotate within the device body. As the projecting ring rotates, a hole in the ring is moved to align with a cross-shaped flange cooperatively formed over the needle holder, thereby allowing the retracted needle holder to previously pass through the hole. As the transverse flange passes through the hole in the projecting ring, the compressed retraction spring is released to drive the needle holder back into a retraction cavity within the trigger. This rotary release mechanism is believed to be different from that used to release a retraction spring on any prior art device that has a retractable needle, and combines reliable retention with an operationally smooth release action that requires the application of force relatively low firing time by a physician when using the device.
    [007] According to a preferred embodiment of the invention, a non-reusable device is disclosed to collect body fluids, such as vascular blood from a patient, the device being configured, for example, to receive a blood collection tube and provided with a retractable needle attached to a needle holder propped backwards, which is contracted before needle retraction by a rotatingly mounted protruding ring and which is released during retraction by pressing a trigger pivotably connected to the device body to rotate the protruding ring, thereby , the needle holder is driven into a retraction cavity arranged inside the trigger, and the front tip of the needle is retained inside the device body. BRIEF DESCRIPTION OF THE DRAWINGS
    [008] The apparatus of the invention is described and explained further in relation to the following drawings, in which:
    [009] FIG. 1 is a simplified perspective view of a preferred embodiment of a device useful for collecting body fluid, such as blood, in which the device is oriented in a substantially vertical position with the portion extending forward of the device pointing in a direction generally towards low.
    [0010] The F1G. 2 is an exploded view of the device of FIG. 1.
    [0011] FIG. 3 is a top plan view of the device of FIG. 1 when oriented in a horizontal position.
    [0012] FIG. 4 is a side elevation view of the device of FIG. 1 when oriented as in FIG. two.
    [0013] FIG. 5 is a left end view of the device of FIG. 1 when oriented as in FIG. 4.
    [0014] FIG. 6 is a cross-sectional elevation view taken along line 6 - 6 of the device of FIG. 3, with the device shown in its pre-use configuration before inserting a fluid collection tube into the device.
    [0015] FIG. 7 is a cross-sectional elevation view of the device of FIG. 6 following the insertion of a fluid collection tube into the device.
    [0016] FIG. 8 is a cross-sectional elevation view of the device of FIG. 6, in its post-use and post-retraction configuration, with the retraction spring expanded and with the front needle tip inside the device body.
    [0017] FIG. 9 is a simplified and reduced representation of FIG. 4, with section lines showing the position and direction in which the cross-sectional view of FIG. 10 is taken.
    [0018] FIG. 10 is a simplified cross-sectional view taken along line 10 - 10 of FIG. 9.
    [0019] FIG. 11 is an enlarged view in detail taken from the cross-sectional elevation view of FIG. 10, showing the projecting ring, projection and a contact surface with projection projection in the pre-use and pre-retraction position.
    [0020] FIG. 12 is the device as shown in FIG. 10, but with the trigger pressed against the body, and with the projecting ring and projection rotated to the retract position.
    [0021] FIG. 13 is an enlarged view in detail taken from the cross-sectional elevation view of FIG. 10, showing the protruding ring, protrusion and the protruding contact surface of the trigger in the retracted position.
    [0022] FIG. 14 is the device as shown in FIG. 12, but following retraction.
    [0023] FIG. 15 is an enlarged view in detail taken from FIG. 7.
    [0024] FIG. 16 is a simplified rear perspective view of another preferred embodiment of a device useful for collecting body fluid, such as blood, in which the needle and trigger (or pivotable actuator) are arranged in the projected pre-retraction position, and wherein the body of the device is provided with a crossbar that restricts pivoting movement upward from the rear portion of the trigger relative to the rear portion of the body following needle retraction.
    [0025] FIG. 17 is a view in detail taken from FIG. 16.
    [0026] FIG. 18 is a transverse front elevation view taken along line 18 - 18 of FIG. 17.
    [0027] FIG. 19 is a simplified rear perspective view of another preferred embodiment of the device of FIG. 16, in which the needle is retracted and the trigger is disposed in the post-retract position, and in which the device body is provided with a crossbar that restricts pivoting movement upwards from the rear portion of the trigger relative to the rear portion of the body following needle retraction.
    [0028] FIG. 20 is a view in detail taken from FIG. 19.
    [0029] FIG. 21 is a transverse front elevation view taken along line 21—21 of FIG. 20.
    [0030] Equal reference numbers are used to describe equal parts in all figures in the drawings. DESCRIPTION OF A PREFERRED EMBODIMENT
    [0031] Device 20, as depicted in whole or in part in the various figures in the drawings, is desirably configured to facilitate the collection of body fluids, and more preferably, vascular fluids from a patient's body. Device 20 is typically used in conjunction with a blood collection tube as depicted, for example, in FIGS. 7 and 8, and further discussed below with respect to these figures. The device 20 desirably includes a needle having two pointed ends connected by a common hole that places them in fluid communication, so that any fluid flowing to the front end, for example, can flow out of the rear end, unless, in some way, be prevented from doing so. The needle is desirably supported within the device by a needle holder. The pointed end towards the rear of the needle is desirably coated with a flexible rubber sheath which is attached by friction, adhesive or the like to the rear end of the needle holder.
    [0032] During clinical procedures aimed at aspirating samples of a body fluid, such as vascular blood from a patient, the tip that protrudes in front of the needle is inserted into a vein or artery of a patient. The device 20 is provided with textured grip surfaces to facilitate this effort, and the bottom of the device 20 is desirably substantially flat in order to allow the needle to be inserted at an almost flat angle to the patient's body. A fluid collection tube with a rubber plug is desirably inserted into the device 20 through an opening in the rear, and is moved forward into the device 20 until the rear end of the needle meets the resistance of the rubber plug. When this occurs, due to the fact that the rubber sheath is typically much more flexible than the rubber plug, the needle tip pierces the sheath and the sheath collapses around the needle, and the needle tip advances through the plug. Once the tip of the needle facing backwards penetrates the plug of the fluid collection tube, the body fluid flowing into the needle from the patient at the front end flows through the needle and into the fluid collection tube. The fluid collection tubes are typically evacuated sufficiently to allow the fluid to flow into the tube without bleeding. When the desired volume of fluid has been collected, the tube is removed from the device 20, and as the needle point facing back out of the plug, the rubber sheath expands again downwards and onto the needle point now exposed . The rubber used to make the rubber sheath desirably has sufficient elasticity that the hole made by the needle closes when the needle is removed, thereby preventing unintentional fluid from flowing out of the back of the needle while the front needle tip is still inserted in the patient.
    [0033] At this stage of aspiration of clinical vascular fluid using conventional devices, the frontal needle tip would be removed from a patient's vein or artery, and the unprotected needle tip, possibly contaminated by a blood-borne pathogen, would be at risk doctors, until it is discarded in an authorized container for sharp objects or similar. In many cases, this is the time when accidental needle sticks and infections occur. For this reason, device 20 is specially adapted and configured to remove the front needle tip from the patient and to the body of device 20 in order to substantially reduce any chance of an accidental needle stick or contamination by direct contact with the tip of the device. needle or the body fluid loaded in it.
    [0034] Referring to FIGS. 1-2, the device 20 desirably includes a body 22, elongated trigger 24, needle holder 50 and a retractable needle 28. The body 22 desirably further comprises a front opening at the front end of a nose 40, rear opening 34, member of protruding flange 38, and finger claws 30 arranged on each side. The finger grippers 32 are also desirably present on the upwardly facing end of the trigger 24 which is opposite hinged supports 36 of the body 22, to which the trigger 24 is pivotally connected. The front end 26 of the needle holder 50, to which the retractable needle 28 is attached, desirably extends slightly close to the nose 40 of the body 22 through the front opening of the nose 40 which is not visible in FIGS. 1-2.
    [0035] The structure and assembly of the device 20 are described and explained further in relation to FIGS. 1-7. Trigger 24 is preferably an elongated member, generally shaped like an inverted U, having an open end facing forward 96 (FIG. 7) and a closed end disposed oppositely comprising two opposite projections projecting laterally 44 (FIGS. 2, 4 and 5). In this embodiment of the invention, the shoulders 44 serve as articulated pins that engage in engagement with articulated supports 36 on the body 22 during assembly of the device 20, although other similarly effective structures can also be used to pivotally connect the rear portion of the trigger 24 to the body 22. The frictional engagement between lugs 44 and articulated supports 36 is desirably sufficient to prevent the trigger 24 from accidentally separating from the body 22 during use of the device 20, but not so large as to provide significant resistance to the rotation of the lugs 44 inside the cooperative recesses of the articulated supports 36 after assembly. A rearwardly limiting member 46 is preferably provided to limit the upward rotation of the trigger 24 relative to the body 22 during use of the device 20. The lower part of the trigger 24 (when oriented as in FIG. 7) is preferably opened by a majority of its length, with a bottom wall section 47 arranged close to the rear. As discussed in more detail below, the interior space within the trigger 24 serves as a retraction cavity 90 in which a major portion of the retractable needle 28 and other portions of the needle retract assembly are received during retraction following the collection of body fluid. A textured finger grip surface comprising, for example, a plurality of laterally spaced ridges 32, is preferably provided on the top surface of the trigger 24 adjacent to the free open end 96. Referring to FIG. 7, a lower protruding contact surface 94 generally downwardly relative to the body 22 is also desirably provided adjacent the open end 96. The function of the protruding contact surface 94 is further described below.
    [0036] The body 22 has a generally tubular side wall defining an interior cavity 92 which, in this preferred embodiment, is of sufficient diameter to receive a conventional fluid receptacle, such as blood collection tube 76, which is slidably inserted through the rear opening 34 during use of the device, as shown in FIGS. 6 and 7. The side wall of the body 22 desirably serves as a guide for maintaining the blood collection tube 76 in substantially coaxial alignment with the body 22 and the needle 28 during use of the device 20, and the length of the body 22 is desirably such that a portion of tube 76 remains easily grasped by a doctor to facilitate removal of tube 76 following collection of body fluid. Referring to FIGS. 1-5, finger claws 30 comprising, for example, textured surface sections with a plurality of closely spaced ridges are desirably provided on each side of the body 22 to assist a physician in grasping the body 22 during use of the device 20.
    [0037] Referring particularly to FIGS. 2-4, 6 and 7, the body 22 preferably further comprises a longitudinally extending elongated groove that is sized and configured to receive a portion of the trigger 24 in the groove as the open end 96 of the trigger 24 is pivoted downwards relative to the body 22 from the hinged supports 36. A recessed front portion 42 on the sides and the front part of the groove 72 facilitates the downward movement of the front part of the trigger 24 in the groove 72. The front end of the body 22 desirably comprises a tapered nose 40 having an internal diameter stepped inward and a frontal opening with an internal diameter slightly larger than the external diameter of the front tip 26 of the needle holder 50. Referring to FIGS. 1 and 7, the length of nose 40 is desirably such that the front end 26 of needle holder 50 extends slightly beyond the nose to facilitate attachment of needle 28 to needle holder 50 following installation of needle holder 50 within the needle holder. body 22, if desired.
    [0038] Referring particularly to FIGS. 2 and 7, a needle retraction assembly that preferably comprises protruding ring 62, needle holder 50 and compressible retraction spring 70 is desirably seated within the front of the body 22. Although it will be appreciated that other similarly effective structures can be used in the same way to seat the needle retraction assembly within the front portion of the body 22, a satisfactory structure comprises a plurality of circumferentially spaced hooks or arcuate segments 104, 106 which are configured in such a way that they are flexible enough to allow passage of the protruding ring 62 in a forward direction during installation, but are configured in such a way and are rigid enough to retain the needle retract assembly in the axial position shown in FIG. 7 against the propensity force of the compressed spring 70 before retraction. When seated and supported in this manner within the body 22, the projecting ring 62 is rotatable about the longitudinal axis of the device 20, but such rotation movement is limited by another structure as described below in relation to FIGS. 10-14. The needle holder 50 preferably comprises a centrally arranged longitudinal hole that is sized and configured to allow the needle 28 to pass through the hole. A transverse flange 52 is desirably provided on the outer side of needle holder 50. Transverse flange 52 is desirably dimensioned and configured to retain the compressed retraction spring 70 arranged around the needle holder 50 in nose 40. The front end of the spring 70 desirably comes into contact with an annular shoulder almost behind the frontal opening of the nose 40.
    [0039] During assembly of the device 20, a flexible elastomeric sheath 56 having an open end 58 and a closed end 74 is desirably attached, such as by frictional engagement, to the head 54 and neck 60 of the needle holder 50. The projecting ring 62 it is placed over the sheath 56 and head 54 of the needle holder 50. The front end 26 of the needle holder 50 is inserted in the spring 70, and this assembly is inserted in the body 22 as the projecting ring 62 positioned so that the hole arranged centrally 102 on the protruding ring 62 (visible, for example, in FIGS. 10 and 14) is not aligned to allow passage of the transverse flange 52 (visible in FIG. 12) of the needle holder 50 through the hole 102. When the protruding ring 62 is arranged in this way, the needle holder 50 is preferably held in the position shown in FIGS. 6 and 7 before needle retraction. The protruding ring 62 preferably further comprises at least one protruding projection 64, as seen, for example, in FIGS. 10-14 and discussed in more detail below. Following the placement of the needle retract assembly within the body 22, the rear needle tip 68 of needle 28 can be inserted into and through the front tip 26 of needle holder 50 and advanced backward until the rear needle tip 68 is close, but not touching, the closed end 74 (FIG. 2) of the flexible elastomeric sheath 56. When properly positioned relative to needle holder 50, needle 28 is preferably attached to needle holder 50 using a suitable conventional means, such as a adhesive, laser welding, or the like. As seen, for example, in FIGS. 2 and 7, needle 28 preferably has an upward chamfer on the front needle tip 66 and an opposing chamfer on the rear needle tip 68.
    [0040] Referring to FIGS. 1-5, body 22, trigger 24, protruding ring 62 and needle holder 50 are all desirably made of an injection moldable polymeric resin of the type commonly used for the manufacture of similar medical devices, but the use of materials polymeric is not required. Where polymeric materials are used, it is not required that all parts be made using the same polymeric material.
    [0041] Referring to FIG. 6, a preferred embodiment of device 20 as described here is depicted in its pre-use configuration, although it will be appreciated that a needle protector (not shown) can also be provided to protect the front needle tip 66 prior to use , even if the device 20 is desirably dispatched and stored in a sterile package. In the pre-use position, the front portion of the trigger 24 can pivot down to a resting position within the groove facing upward of the body 22, as shown. As a fluid collection tube 76 is advanced forward into the body 22 through the rear opening 34, as indicated by the arrow 84, the top of the rubber plug 80 contacts the bottom of the trigger 24 and makes front end of trigger 24 rotates upwardly relative to body 22 to the position shown in FIG. 7. When trigger 24 is in the position of FIG. 7, the rearward projection 46 of the trigger 24 comes into contact and touches the bottom of the notch 48 (visible in FIG. 2) to limit the upward movement of the trigger 24 relative to the body 22. As the fluid 76 (FIG. 6) advances, the rear needle tip 68 penetrates the elastomeric sheath 56 and then penetrates the rubber plug 80 to establish fluid communication with the interior 92 of the tube member 78. As this occurs (best seen in FIG. 15 taken from FIG. 7), elastomeric sheath 56 is wrinkled in the annular space around needle 28 at the front of rubber plug 80.
    [0042] Referring to FIGS. 10 and 11, the protrusion 64, which protrudes preferably radially out of the protruding ring 62, is desirably positioned on a detent behind a smoothly configured shoulder 100 projecting into a portion of the body 22 opposite the protrusion 64. The shoulder 100 prevents protruding ring 62 from rotating with respect to body 22 and the transverse flange 52 of needle holder 50 before retracting the needle. When the projecting ring 62 is a positioner as shown in FIGS. 10 and 11, the needle holder cross flange 52 cannot pass through the hole 102 in the projecting ring 62. Likewise, the spring bias force 70 (FIG. 7) applied against the forward facing surface of the cross flange 52 is contracted by the protruding ring 62 until the protruding ring 62 is rotatably positioned inside the body 22. It is important to be appreciated that when reading this disclosure that the transverse flange 52 and the orifice 102, can each have an infinite number of different shapes, provided, however, that the relative size and shape of the cross flange 52 and orifice 102 are such that the cross flange 52 can pass through orifice 102 only when the projecting ring 62 is rotated from the contracted position shown in FIGS . 10-11 to a non-contracted position, as shown in FIGS. 12-14.
    [0043] Referring to FIG. 8, after the fluid collection tube has been filled to the desired volume with the body fluid taken from a patient, the physician using device 20 will pick up and remove the collection tube 76 from cavity 86, as indicated by arrow 87. When this happens, the rubber plug 80 blocks the tube 76 to prevent leakage of fluid from the tube, and the elastomeric sheath expands back over the rear needle tip 68 to prevent leakage of any body fluid still contained in the needle 28 outward from the rear of the body 22. The needle 28 can then be retracted directly from the patient by pressing the free end of the trigger 24 into the groove facing upward of the body 22 near the resting point shown in FIG. 6 to a point where the needle retracts.
    [0044] Referring to FIGS. 12-14, as the front end of the trigger 24 is pressed into the body 22, the downward facing contact surface 94 of the trigger 24 comes in contact with the opposite upwardly facing surface of the protruding ring 62, thereby forcing the protrusion 64 close to the projection 100 of the body 22 and simultaneously rotating the protruding ring 62, as indicated by the arrow 65 (FIG. 13) to a position where the transverse flange 52 and orifice 102 are aligned in a position where the transverse flange 52 is no longer contracted by projecting ring 62. Referring again to FIG. 8, when the protruding ring 62 reaches the position where the needle holder 50 is released, the spring 70 expands rapidly and, acting on the front surface of the cross flange 52 of the needle holder 50, guides the needle holder 50 with the elastomeric sheath 56 and the needle 28 affixed back to a retraction cavity 90 of the trigger 24. When this occurs, the protruding ring 62 and the protrusion 64 remain in the position shown in FIG. 12, needle 28 is angled upward, and the front end tip 66 of needle 28 is retracted into the nose 40 of the body 22 to a position where no one, be it the patient, a doctor or someone else present, is subjected later the possibility of an accidental injury resulting from a needle stick and / or infection from the potentially contaminated needle. Due to the fact that the needle 28 is then captured within the device 20, the possible reuse of the device 20 is also eliminated.
    [0045] Referring to FIGS. 16-21, another embodiment 200 of the invention is disclosed, which is substantially the same as that previously described, except with respect to the fact that a crossbar 220 is provided between opposing hinged vertical supports 213, 214 to restrict upward or movement of the limiting member projecting backward 222 (best seen in FIGS. 18 and 21) relative to the body 210 after the forward portion of the trigger 212 has been pressed relative to the body 210 during retraction of the needle. FIGS. 16-18 show the resting position of trigger 212 relative to body 210 before retracting the needle, and FIGS. 19-21 show the resting position of trigger 212 relative to body 210 following needle retraction.
    [0046] During needle retraction, as the front portion of the trigger 212 is pressed into the body 210, the limiting member projecting backward 222 appears outside the notch 224 and engages at the bottom of the crossbar 220 Depending on the thickness and material of which the crossbar 220 is made, it can flex or bend upwards while the trigger 212 is pressed relative to the body 210 to initiate retraction. While in a bent or flexed position (not shown) with respect to the body 210, the crossbar 220 may in fact extend the top surface of the limiting member projecting backwards downwards towards the rear portion of the body 210.
    [0047] After the needle has been retracted by the user, and after the user is no longer pressing down on trigger 212, the natural resilience of the material used to produce the crossbar 220 will desirably return it substantially to its pre position - retraction in relation to body 210. Although the crossbar 220 can be made separately and then affixed to the opposite articulated support 213, 214 using any suitable known fastener, adhesive or welding technique, the crossbar 220 is preferably molded as part body 210 and / or articulated supports 213, 214.
    [0048] Other changes and modifications of the invention will also become apparent to those who are skilled in the art when reading this report in view of the accompanying drawings, and it is intended that the scope of the invention disclosed here is limited only by the comprehensive interpretation of the attached claims to which the inventors are legally entitled.
    权利要求:
    Claims (14)
    [0001]
    1. Device (20) useful for collecting body fluid from a patient, the device (20) comprising: a body (22) having a selectively retractable, freely retractable needle (28) propelled backward and projecting forward, the body (22) being configured to receive a fluid collection tube (76) in selectively releasable fluid communication with a rear end of the retractable needle (28); a trigger (24) connected in pivotable relation to the body (22); the device (20) characterized by a projecting ring (62) rotatably mounted inside the body (22); wherein the pivotable movement of the trigger (24) in relation to the body (22) following the release of the fluid collection tube (76) from the body (22) rotates the protruding ring (62), and thus releases the needle (28) propelled backwards to retract into the retraction cavity (90) disposed within the trigger (24).
    [0002]
    2. Device (20) according to claim 1, characterized by the fact that the fluid collection tube (76) is a blood collection tube.
    [0003]
    Device (20) according to claim 1, characterized in that the retractable needle (28) has pointed front and rear needle tips.
    [0004]
    Device (20) according to claim 1, characterized in that the retractable needle (28) is attached to a needle holder (50) seated inside the body (22).
    [0005]
    Device (20) according to claim 1, characterized in that the needle holder (50) is propelled backwards by a compressed retraction spring (70).
    [0006]
    6. Device (20) according to claim 4, characterized by the fact that the needle holder (50) is contracted by the projecting ring (62).
    [0007]
    Device (20) according to claim 1, characterized in that the body (22) comprises an open rear end into which a fluid collection tube (76) is inserted.
    [0008]
    Device (20) according to claim 1, characterized in that the body (22) comprises an upward groove and that a portion of the trigger (24) pivotally connected to the rear portion of the body (22) can be received into the slot.
    [0009]
    Device (20) according to claim 8, characterized in that the trigger (24) contacts and rotates the projecting ring (62) when the trigger (24) is pivoted relative to the body (22) and is depressed inside the slot.
    [0010]
    Device (20) according to claim 1, characterized in that the body (22) comprises at least one flange member (52) projecting transversely having a substantially smooth bottom.
    [0011]
    11. Device (20) according to claim 4, characterized in that the projecting ring (62) comprises a centrally disposed hole (102) which is alignable with a transverse flange (52) of the needle holder (50) when rotated by the trigger (24).
    [0012]
    12. Device (20) according to claim 1, characterized by the fact that the body (22), trigger (24) and protruding ring (62) are made of molded plastic.
    [0013]
    13. Device (20) according to claim 4, characterized in that the rear needle tip is surrounded by a flexible elastomeric sheath (74) attached to the needle holder (50).
    [0014]
    Device (20) according to claim 1, characterized in that the body (22) further comprises a plurality of laterally spaced articulated supports (21, 214) which each receive and support a projection (94) projecting laterally from one side of the trigger (24).
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    EP2598190A1|2013-06-05|
    AU2011283033A1|2013-02-21|
    KR20140008289A|2014-01-21|
    CA2809510C|2018-05-29|
    AU2011283033B2|2015-06-04|
    MX2013001194A|2014-01-31|
    SG188184A1|2013-04-30|
    CO6700820A2|2013-06-28|
    RU2013108823A|2014-09-10|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-09-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-06-16| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-11-03| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/07/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/846,402|US8496600B2|2008-06-10|2010-07-29|Non-reusable collection device for bodily fluids|
    US12/846402|2010-07-29|
    PCT/US2011/044668|WO2012015644A1|2010-07-29|2011-07-20|Non-reusable collection device for bodily fluids|
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