• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    SAFETY SYRINGE FOR BLOOD COLLECTION THAT HAS A MANUALLY RETRACTABLE NEEDLE. It is a retractable needle set that includes a housing that has a side wall that defines a hollow hole, and an elongated plunger, the distal end of the bolt forming a container inside the hollow hole to contain fluid in it. The plunger is adapted to slide in the hollow hole. The set includes a hub disposed within the hollow hole and supporting at least partially a cannula, and a needle retraction member engaged with the hub for manually selectable advance with respect to a part of the housing. The needle retraction member can be advanced from an initial position in which at least a part of the needle is disposed outside the housing, to a retracted position in which the needle is entirely encircled by the housing. The elongated plunger can be advanced around the hub to draw fluid into the container or expel fluid from the container.
    公开号:BR112013031383B1
    申请号:R112013031383-8
    申请日:2012-06-08
    公开日:2021-03-09
    发明作者:Jamieson W. Crawford；Robert G. Ellis
    申请人:Becton Dickinson And Company；
    IPC主号:
    专利说明:

    Cross-Reference with Related Orders
    [001] The present application claims priority of the North American Provisional Patent Application Series N 61 / 494,615, filed on June 8, 2011, the description of which is fully incorporated into the present by way of reference. Fundamentals of the Invention Field of the Invention
    [002] The present invention relates to a device for taking a sample of fluid from a patient and subsequently dispensing the collected fluid to a collection container. Specifically, this invention relates to a safety syringe for drawing a sample of fluid, such as blood, from a patient, retracting the needle element from the device into the housing of the device, and subsequently dispensing the collected fluid into a container of separate collection. Description of the Related Art
    [003] Hypothermic syringes are widely used in the medical arts to take fluid samples from a patient. Generally, hypothermic syringes are provided with a metal needle that has a sharp distal tip to penetrate a patient's hair that is fixedly or removably attached to a housing. With the recognition of fluid-borne diseases that are transmitted by body fluids, and greater sensitivity to the need to protect health workers from inadvertent contact with previously used needles (commonly referred to as “sharp objects”), as well as the need to reduce the criminal misuse of needles and disposed of inappropriately, syringes have been developed that include precautions to better protect health workers.
    [004] Various mechanisms have also been developed to reduce the incidence of health workers' inadvertent exposure to sharp objects, however, most of these devices can be compromised by an individual determined to obtain and misuse a hypothermic syringe after its intended use . As a result, further developments in the hypothermic syringe technique have resulted in the advent of hypothermic syringes that have needles that retract into the syringe body once its intended use is complete.
    [005] Most conventional syringe assemblies in which the needle is retracted into the syringe body require fabrication and assembly of parts with fair tolerance requirements. Many of the projects depend on a careful application of forces by the professional to remove and / or expel fluids from the syringe. In these assemblies, deviation from the tight tolerances of the various components of the device during manufacture and assembly may result in premature activation of the syringe reaction function. In addition, conventional syringe sets, which include a retraction aspect, were developed for the limited purpose of injecting a patient with a medication, and do not address the need for a syringe used to collect body fluid that has a retraction element .
    [006] Current conventional syringes are used for several different procedures that involve both “one shot” filling and injection procedures, as well as more complex mixing, measurement, and dispensing functions. For a retractable syringe to replace these functional, useful, and reliable conventional syringes, the new retractable syringe must not interfere with current practices, must be cost effective, and must be substantially reliable. Current conventional syringes are often manufactured at rates of several hundred per minute and their cost is generally not a significant factor in their use. He who is well versed in the technique of large-scale manufacturing recognizes that hundreds of millions of complex retractable syringe sets with rotation elements contained in a small space, for example, in the order of a 6.35 mm diameter bore, is a task discouraging.
    [007] Therefore, a retractable syringe that is suitable for use as a body fluid collection device is required to be subsequently transferred to a collection container. Also required is a retractable syringe that is capable of being manufactured on a large scale, and sufficiently reliable in use when produced on a large scale. Such a device is described below in this report. A safety syringe is also required to provide better quality of sample transferred to a secondary container. Summary of the Invention
    [008] In accordance with an embodiment of the present invention, a retractable fluid collection needle assembly includes a housing that has a proximal end and a distal end and a side wall that defines a hollow hole extending between the proximal end and the distal end. The assembly also includes an elongated plunger that has a proximal end and a distal end, with the distal end of the plunger forming a container within the hollow hole to contain fluid in it. The plunger is adapted for sliding movement within the hollow hole. The set also includes a hub arranged at least partially within the hollow hole and supporting at least partially a cannula in it. The set also includes a needle retraction member engaged with the hub to manually select the feed with respect to a portion of the housing. The needle retraction member can be advanced from an initial position in which at least part of the needle is disposed outside the hub, to a retracted position in which the needle is entirely surrounded by the hub. The elongated plunger can be advanced around at least part of the hub to extract fluid into the container or expel fluid from the container.
    [009] In one configuration, the assembly also includes an elastomeric plug connected to the distal end of the elongated plunger and which can be advanced laterally into the hollow hole to form a substantially hermetic seal thereon. The stopper can be arranged inside the hollow hole at a location distal to the cube. The needle retraction member can extend at least partially through a part of the housing side wall. In certain configurations, the hub and the needle retraction member are co-formed.
    [010] Optionally, the needle assembly may include a seal disposed within the hollow hole and positioned around a part of the needle when the needle is in the initial position to form an airtight chamber within the container. The needle may include an opening surrounded by the container to allow fluid to enter the needle to pass into the container.
    [011] In other configurations, retraction of the elongated plunger from an initial position in which the plunger is substantially disposed within the hollow bore, to a retracted position in which the plunger is substantially disposed outside the hollow bore, induces a vacuum inside the container to draw fluid in this way. The transition of the needle retraction member from the starting position to the retracted position allows the transfer of the elongated plunger into the hollow hole to expel fluid from the container. In specific configurations, the elongated plunger may include a pair of pendant arms, with each arm including a protrusion arranged within a corresponding notch, defined within the side wall of the container.
    [012] The needle assembly may also include a lock to prevent transfer of the needle retraction member once the needle retraction member has transitioned from the starting position to the retracted position. The elongated plunger may include a plurality of ramp stops arranged around an extension of the plunger extending between the distal end and the proximal end. The proximal end of the housing can define at least one limitation adapted to receive a ramp stop in it, so that it is allowed to advance the plunger with respect to the proximal end of the housing in the proximal direction and the advance of the plunger with respect to the proximal end of the accommodation in the distal direction is limited by the interaction of at least one ramp stop and at least one limitation.
    [013] The needle retraction member may also include at least one flange adapted to contact at least one protrusion when the elongated plunger is in a fully retracted position to allow transfer of the plunger into the hollow hole. Optionally, the distal end of the housing includes a flash chamber to indicate venous access.
    [014] According to another embodiment of the present invention, retractable fluid collection needle set includes a housing that has a proximal end and a distal end and a side wall that defines a hollow hole that extends between the proximal ex-tremity and the distal end. The assembly also includes an elongated plunger having a proximal end and a distal end, with a distal end of the plunger forming a container within the hollow hole to contain a fluid. The plunger can be adapted to slide in the hollow bore. The assembly also includes a cube arranged at least partially within the hollow bore and which supports at least partially a cannula. A needle retraction member can be engaged with the hub for manually selectable feed with respect to a portion of the housing. The elongated plunger can transition from an initial position in which the plunger is substantially disposed within the hollow bore, to a retracted position in which the plunger is substantially disposed outside the hollow bore. The needle retraction member subsequently transitions from an initial position in which at least part of the needle is disposed outside the hub, to a retracted position in which the needle is entirely surrounded by the hub. The transition of the needle retraction member from the starting position to the retracted position allows the transfer of the elongated plunger into the hollow hole.
    [015] In certain configurations, the transition from the elongated plunger to the retracted position draws fluid into the container, and the transfer of the elongated plunger from the retracted position expels fluid from the container.
    [016] In accordance with yet another embodiment of the present invention, a retractable fluid collection needle assembly includes a housing that has a proximal end and a distal end and a side wall that defines a hollow hole extending between the proximal end and the distal end. The assembly also includes an elongated plunger that has a proximal end and a distal end, with the distal end of the plunger forming a container within the hollow hole to contain fluid in it. The plunger can be adapted to slide in the hollow bore. The assembly also includes a hub arranged at least partially within the hollow bore and supporting at least partially a cannula. Also provided is a needle retraction member engaged with the manually selectable advancing hub with respect to a part of the housing, wherein the needle retraction member can be advanced from an initial position in which at least a part of the needle it is arranged outside the hub, to a retracted position in which the needle is completely surrounded by the hub. The movement of the elongated plunger is isolated from the movement of the needle retraction member.
    [017] In certain configurations, the elongated plunger is movable from an initial position in which the plunger is substantially disposed within the hollow bore, to a retracted position in which the plunger is substantially disposed outside the hollow bore. Elongated plunger can be substantially transferred into the hollow bore. Optionally, the elongated plunger can be transferred subsequent to the advance of the needle retraction member from the initial position to the retracted position.
    [018] Details and additional advantages of the invention will become clear from the detailed description that follows when read in combination with the accompanying drawings. Brief Description of Drawings
    [019] Figure 1 is a perspective view of a syringe assembly according to an embodiment of the present invention; Figure 2 is a cross-sectional view of the syringe assembly of Figure 1 in the initial position as taken along line 2-2 according to an embodiment of the present invention; Figure 3 is a cross-sectional view of the syringe assembly of Figure 1 in the retracted position according to an embodiment of the present invention; Figure 4 is a perspective view of a syringe assembly in an initial position according to an embodiment of the present invention; Figure 5 is an alternative perspective view of the syringe assembly of Figure 4 according to an embodiment of the present invention; Figure 6 is a side view of the syringe assembly of Figure 4 according to an embodiment of the present invention; Figure 7 is a top view of the syringe assembly of Figure 4 according to an embodiment of the present invention; Figure 8 is a rear view of the syringe assembly of Figure 4 according to an embodiment of the present invention; Figure 9 is a front view of the syringe assembly of Figure 4 according to an embodiment of the present invention; Figure 10 is an alternative perspective view of the syringe assembly of Figure 4 which has a plunger removed from the syringe body according to an embodiment of the present invention; Figure 11 is a side view of the syringe assembly of Figure 10 according to an embodiment of the present invention; Figure 12 is a top view of the syringe assembly of Figure 10 according to an embodiment of the present invention; Figure 13 is a perspective view of the syringe assembly of Figure 10 which has the needle retraction member in a retracted position according to an embodiment of the present invention; Figure 14 is a side view of the syringe assembly of Figure 13 according to an embodiment of the present invention; Figure 15 is a top view of the syringe assembly of Figure 13 according to an embodiment of the present invention; Figure 16 is a perspective view of the syringe assembly of figure 13 that has the plunger transferred within the syringe body according to an embodiment of the present invention; Figure 17 is a side view of the syringe assembly of Figure 16 according to an embodiment of the present invention; Figure 18 is a top view of the syringe assembly of Figure 16 according to an embodiment of the present invention; Figure 19 is a perspective view of a syringe assembly in its initial position according to an embodiment of the present invention; Figure 20 is a side view of the syringe assembly of Figure 19 according to an embodiment of the present invention; Figure 21 is a top view of the syringe assembly of Figure 19 according to an embodiment of the present invention; Figure 22 is a cross-sectional view of the syringe assembly of Figure 19 taken along line 22-22 of Figure 20 according to an embodiment of the present invention; Figure 23 is a perspective view of the syringe assembly of Figure 19 which has the plunger removed from the syringe body in accordance with an embodiment of the present invention; Figure 24 is a side view of the syringe assembly of Figure 23 according to an embodiment of the present invention; Figure 25 is a top view of the syringe assembly of Figure 23 according to an embodiment of the present invention; Figure 26 is a cross-sectional view of the syringe assembly of Figure 23 taken along line 26-26 of Figure 24 according to an embodiment of the present invention; Figure 27 is a perspective view of the syringe assembly of Figure 23 which has the needle retraction member in the retracted position according to an embodiment of the present invention; Figure 28 is a side view of the syringe assembly of Figure 27 according to an embodiment of the present invention; Figure 29 is a top view of the syringe assembly of Figure 27 according to an embodiment of the present invention; Figure 30 is a cross-sectional view of the syringe assembly of Figure 27 taken along line 30-30 according to an embodiment of the present invention; Figure 31 is a perspective view of the syringe assembly of Figure 27 which has the plunger transferred within the syringe body according to an embodiment of the present invention; Figure 32 is a side view of the syringe assembly of Figure 31 according to an embodiment of the present invention; Figure 33 is a top view of the syringe assembly of Figure 31 according to an embodiment of the present invention; Figure 34 is a cross-sectional view of the syringe assembly of Figure 31 taken along line 34-34 of Figure 32 according to an embodiment of the present invention; Figure 35 is a partial top cross-sectional view of the distal end of a syringe assembly having a distal seal according to an embodiment of the present invention; Figure 36 is a top cross-sectional view of a syringe assembly that has a distal seal in the initial position according to an embodiment of the present invention; Figure 37 is a top cross-sectional view of the syringe assembly of Figure 36 which has the plunger removed from the syringe body according to an embodiment of the present invention; Figure 38 is a top cross-sectional view of the syringe assembly of Figure 36 which has the needle retraction member in the retracted position according to an embodiment of the present invention; Figure 39 is a cross-sectional top view of the syringe assembly of Figure 36 which has the plunger transferred within the syringe body according to an embodiment of the present invention; Figure 40 is a top cross-sectional view of a syringe assembly having a short needle and an extension chamber in the initial position according to an embodiment of the present invention; Figure 41 is a top cross-sectional view of the syringe assembly of Figure 40 which has the plunger transferred within the syringe hub according to an embodiment of the present invention; Figure 42 is a top cross-sectional view of a syringe assembly having a short needle and an extension chamber in the initial position according to an embodiment of the present invention; Figure 43 is a top cross-sectional view of the syringe assembly of Figure 40 which has the plunger removed from the syringe body according to an embodiment of the present invention; Figure 44 is a top cross-sectional view of the syringe assembly of Figure 40 which has the needle retraction member in the retracted position according to an embodiment of the present invention; Figure 45 is a top cross-sectional view of the syringe assembly of Figure 30 which has the plunger transferred within the syringe hub in accordance with an embodiment of the present invention; Figure 46 is a perspective view of a syringe assembly in an initial position according to an embodiment of the present invention Figure 47 is a side view of the syringe assembly of Figure 46 according to an embodiment of the present invention; Figure 48 is a top cross-sectional view of the syringe assembly of Figure 46 according to an embodiment of the present invention; Figure 49 is a cross-sectional view of the syringe assembly of Figure 46 taken along line 49-49 according to an embodiment of the present invention; Figure 50 is a perspective view of a syringe assembly having a plunger removed from the syringe body in accordance with an embodiment of the present invention; Figure 51 is a side view of the syringe assembly of Figure 50 according to an embodiment of the present invention; Figure 52 is a top view of the syringe assembly of Figure 50 according to an embodiment of the present invention; Figure 53 is a cross-sectional view of the syringe assembly of Figure 50 taken along line 53-53 of Figure 52 according to an embodiment of the present invention; Figure 54 is a perspective view of a syringe assembly having the needle retraction member in the retracted position according to an embodiment of the present invention; Figure 55 is a side view of the syringe assembly of Figure 54 according to an embodiment of the present invention; Figure 56 is a top view of the syringe assembly of Figure 54 according to an embodiment of the present invention; Figure 57 is a cross-sectional view of the syringe assembly of Figure 54 taken along line 57-57 according to an embodiment of the present invention; Figure 58 is a perspective view of a syringe assembly having the plunger transferred within the syringe body according to an embodiment of the present invention; Figure 59 is a side view of the syringe assembly of Figure 58 according to an embodiment of the present invention; Figure 60 is a top view of the syringe assembly of Figure 58 according to an embodiment of the present invention; Figure 61 is a cross-sectional view of the syringe assembly of Figure 58 taken along line 61-61 of Figure 60 according to an embodiment of the present invention; Figure 62 is a perspective view of a syringe assembly in an initial position according to an embodiment of the present invention; Figure 63 is a cross-sectional view of the syringe assembly of Figure 62 taken along line 63-63 according to an embodiment of the present invention; Figure 64 is a perspective view of the syringe assembly of Figure 62 which has the plunger removed from the syringe body according to an embodiment of the present invention; Figure 65 is a cross-sectional view of the syringe assembly of Figure 64 taken along line 65-65 according to an embodiment of the present invention; Figure 66 is a perspective view of the syringe assembly of Figure 62 which has the needle retraction member in the retracted position according to an embodiment of the present invention; Figure 67 is a cross-sectional view of the syringe assembly of Figure 66 taken along line 67-67 according to an embodiment of the present invention; Figure 68 is a perspective view of the syringe assembly of Figure 62 which has the plunger transferred within the syringe body according to an embodiment of the present invention; Figure 69 is a cross-sectional view of the syringe assembly of Figure 68 taken along line 69-69 according to an embodiment of the present invention; Figure 70 is a perspective view of a syringe assembly in an initial position according to an embodiment of the present invention; Figure 71 is a cross-sectional view of the syringe assembly of Figure 70 taken along line 71-71 according to an embodiment of the present invention; Figure 72 is a perspective view of the syringe assembly of Figure 70 which has the plunger removed from the syringe body according to an embodiment of the present invention; Figure 73 is a cross-sectional view of the syringe assembly of Figure 72 taken along line 73-73 according to an embodiment of the present invention; Figure 74 is a perspective view of the syringe assembly of Figure 70 which has the needle retraction member in the retracted position according to an embodiment of the present invention; Figure 75 is a cross-sectional view of the syringe assembly of Figure 74 taken along line 75-75 according to an embodiment of the present invention; Figure 76 is a perspective view of the syringe assembly of Figure 79 that has the plunger transferred within the syringe body according to an embodiment of the present invention; Figure 77 is a cross-sectional view of the syringe assembly of Figure 76 taken along line 77-77 according to an embodiment of the present invention; Figure 78 is a partial perspective view of a syringe assembly that has a removable IR shield arranged therein according to an embodiment of the present invention; Figure 79 is a perspective view of a plunger rod according to an embodiment of the present invention; Figure 80 is a perspective view of a chamber and base extender coupled with a needle retraction member according to an embodiment of the present invention; Figure 81 is a top view in closed perspective of the distal end of the chamber extender taken along section 81 'of Figure 80 according to an embodiment of the present invention; Figure 82 is a closed bottom perspective view of the proximal end of the base coupled with the needle retraction member taken along section 82 'of figure 80 according to an embodiment of the present invention; Figure 83 is a partial perspective cross-sectional view of a retractable needle assembly that has a locking mechanism in an initial position according to an embodiment of the present invention; Figure 84 is a partial perspective cross-sectional view of a retractable needle assembly of Figure 83 that has a locking mechanism in an extended position in accordance with an embodiment of the present invention. Detailed Description of the Invention
    [020] For the purpose of the description that follows, the words "top", "bottom", "right", "left", "vertical", "horizontal", "top", "bottom", "side", “Longitudinal” and similar spatial terms, if used, will be related to the modalities described as oriented in the figures of the drawings. However, it should be understood that many variations and alternative modalities can be assumed except where expressly specified to the contrary. It should also be understood that the specific devices and modalities illustrated in the attached drawings and described herein are merely exemplary of the invention.
    [021] The present invention is directed to a syringe assembly, such as a hypothermic syringe, for the extraction of body fluids from a patient, and subsequent transfer of the extracted fluid to a separate collection container. As shown in Figures 1 to 3, a retractable needle assembly 100 according to an embodiment of the present invention includes a housing 102, such as an elongated cylindrical tube, which has a proximal end 104 and a distal end 106 and a side wall 108 extending from it and defining a hollow hole 110 between the proximal end 104 and the distal end 106. A hub 112 is arranged at least partially within the hollow hole 110 and at least partially supports a needle cannula 114 that extends to the longitudinal axis A of the retractable needle assembly 100.
    [022] An elongated piston 122, which has a proximal end 124 and a distal end 126, is arranged and dimensioned to fit with hole 110 of housing 102 for sliding movement thereon. Plunger 122 and side wall 108 of housing 102 are sized to define a container 128 for receiving and expelling fluids from them. In one embodiment, the plunger 122 includes a stopper 130 arranged at said distal end 126 to close an open end 132 of the container 128, with the stopper 130 being sized and molded to form a substantially airtight sliding seal with the hole 110 of the housing 102 to form the container 128. In an alternative embodiment, the stopper is an integral part of the plunger, such as through a plastic stopper sealing technology.
    [023] The hub 112 is connected to a needle retraction member 116 that extends at least partially through a portion of the side wall 108 of housing 102 to allow a user to manually move the needle cannula 114 from an initial position in the which at least a part of the needle cannula 114 extends from the distal end 106 of the housing 103, as shown in Figure 1, to a retracted position in which the needle cannula 114 is entirely protected by the housing 102, as shown in Figure 3 In certain configurations, hub 112 and needle retract member 116 can be co-molded as a unitary component. In another embodiment, the hub 112 and the needle retract member 116 can be formed separately and subsequently assembled.
    [024] In one embodiment, the needle retraction member 116 includes a tab or button 118 to allow a user to slide the needle retraction member 116 connected to hub 112 along a notch 120 defined within the sidewall 108 of the housing 102 in the direction of an arrow B, as shown in Figure 3, to retract needle cannula 114 to housing 102. In certain embodiments, the transition from needle cannula 114 from the retracted position to the starting position is prevented by a barrier mechanics, as will be discussed here, to prevent inadvertent re-exposure of the needle cannula 114.
    [025] In use, a user of the retractable needle set 100 must insert points of the needle cannula 114 into a patient to withdraw a fluid sample, such as a blood sample, and must pull the proximal end 124 of the plunger in the direction of arrow B, as shown in Figure 3. A seal can be provided around the cannula 114 adjacent to the distal end 106 of housing 103 to form an airtight seal within container 128 with the retractable needle assembly 100 in the starting position. As a vacuum is created in the hollow hole 110, the patient's fluid sample is drawn into vessel 128. Cannula 114 may include an opening, as described herein, to allow blood to enter vessel 128. Once withdrawal the sample is completed, the user slides the needle retraction member 116 in the direction of arrow B, as shown in Figure 3, as well as sliding the button 118 along the notch 120 in the housing 102, to retract the needle cannula 114 to housing 102. Once the needle cannula 114 is fully protected by housing 102, the user can push the plunger 122 in the opposite direction of arrow B, as shown in Figure 3, to expel the fluid sample collected from container 128 to a secondary collection container (not shown). During the transfer of the plunger 122 to expel the collected fluid from the container 128, the hub 112 and the needle cannula 114 supported by the same, remain fixed inside the hole 110 of the housing 102. In one embodiment, a locking tongue 134 limits the limb of needle retraction 116 against a portion of housing 102 to prevent inadvertent advancement of hub 112 and / or needle cannula 114 once the transition from the starting position to the retracted position has occurred.
    [026] According to another embodiment of the present invention, as shown in Figures 4 to 18, a retractable needle assembly 100a includes a housing 102 that includes a longitudinal central notch 136 disposed within the side wall 108. Housing 102 can also include a pair of sliding grooves 144, 146 disposed on opposite sides of the central longitudinal notch 136. The plunger 122 includes a pair of pendant arms 138, 140 disposed within housing 102 on substantially opposite sides of the longitudinal notch 136. Each pendant arm 138, 140 may include a projection 148 adjacent to the distal end 126 of the plunger 122 and provided within the corresponding slots 144, 146 disposed within the housing 102. The plunger 122 may optionally include a user pull ring 142 adjacent to the proximal end 124 of the plunger 122 to assist the user in retracting the plunger 122.
    [027] The needle retraction member 116 may include a central part 150 disposed within the longitudinal central notch 136 of housing 102, and the opposing contact parts 152, 154 extending from the central part 150 and engaging the corresponding parts of the plunger 122 along the longitudinal central notch 136. The needle cannula 114 supported by hub 112 includes an opening 156 in the cannula 114 adjacent to the distal end 106 of the housing when the retractable needle assembly 100a is in the starting position, as shown in Figure 7. The opening 156 in the cannula 114 allows the fluid sample collected from the patient to flow into the container 128 defined between the stopper 130 and the plunger 122 and the side wall 108 of the housing 102.
    [028] In use, the tip of the needle cannula 114 penetrates a patient's skin while the retractable needle set 100a is in the starting position, as shown in Figures 4 to 9. Once needle cannula 114 has accessed a fluid sample from a patient, the user will retract the plunger 122 as pulling the pull ring 142 in the direction of arrow C, as shown in Figure 10, to transition the retractable needle assembly 100a to the sample draw position, as shown in Figures 10 to 12. During this phase, as the user advances the plunger in the direction of arrow C, as shown in Figure 10, each pendant arm 138, 140 slides into the slots 144, 146 of the housing, creating a vacuum in container 128 that draws the patient's fluid sample into container 128. Patient fluid enters container 128 via needle opening 156 adjacent to distal end 106 of housing 102 when the needle assembly retracts til 100a is in the sample extraction position. When the projections 148 of the hanging arms 138, 140 contact the proximal end of the corresponding slots 144, 146, the plunger has been advanced to the maximum withdrawal position.
    [029] At this point, the user will transition the needle retraction member 116 to the retracted position, as shown in Figures 13 to 15, in which the needle cannula 114, connected to the needle retraction member 116 and hub 112 , is fully protected by housing 102. In one embodiment, the user will slide the needle retraction member 116 along the longitudinal notch 136 of the housing in the direction of arrow B, as shown in Figure 13, for transition from the retraction member of needle 116 to the stowed position. During this transition, the contact parts 152, 154 extending from the central part 150 of the needle retraction member 116 slide along the corresponding parts of the plunger 122 which extends along the longitudinal notch 136 until the retraction member of needle 116 abuts the part of housing 102 that surrounds the termination of the longitudinal notch adjacent to the proximal end 104 of housing 102. Optionally, the needle retracting member 116 can include a tongue to allow unidirectional pressure engagement with the longitudinal notch 136 during assembly.
    [030] Once the retractable needle assembly 100a has been transitioned to the stowed position, the user can transfer the plunger 122 in the direction of arrow E, as shown in Figure 16, to expel the fluid sample collected into container 128 during the sample transfer position, as shown in Figures 16 to 18. During the sample transfer, the user will advance the plunger 122 in the direction of arrow E, as shown in Figure 16, and advance the hanging arms 138, 140 to the along the side notches 144, 146 in the opposite direction from the sample withdrawal. As the plunger is transferred, the stopper 130 is advanced in the distal direction and expels the sample collected from inside the container 128 through an opening 158 through the tip of the needle cannula 114. In certain configurations, the opening 158 may include a material hydrophobic to prevent inadvertent leakage of fluid sample until sufficient compression is applied to container 128 by advancing plunger 122 in the distal direction during sample transfer. It is noted here that the use of hydrophobic material in opening 158 must be employed with great care to balance the prevention of inadvertent leakage of fluid from container 128 with the desire to transfer the entire sample during the sample transfer phase. During sample transfer, the contents of container 128 can be expelled from the retractable needle assembly 100a into a separate collection container (not shown). During sample transfer, hub 112, needle cannula 114, and needle retract member 116 remain fixed in the retracted position.
    [031] According to another embodiment of the present invention, a retractable needle assembly 100b, as shown in Figures 19 to 34, includes a housing 102, a plunger 122, a needle cannula 114, a hub 112 and a retraction member needle 116 as described above with reference to the previous figures. In this configuration, each of the hanging arms 138, 140 of the plunger 122 includes a plurality of ramp stops 160 that includes an inclined proximal surface 162 and a vertical distal surface 164, as clearly illustrated in Figure 22. It is contemplated that the vertical distal surface 164 may not be entirely vertical and may have a slight angle of several degrees to assist in smooth retraction of the plunger 122 from housing 102. Still in this configuration, the proximal end 104 of housing 102 includes a pair of boundaries 166 positioned on sides opposites of the longitudinal notch 136. Each limit 166 includes a protrusion 168 that extends to a part of the hollow hole 110 of housing 102. In certain configurations, each limit 166 can have a spring bias directed inwardly causing the projections 168 to be also directed to the hollow hole 110 of housing 102 in the resting condition.
    [032] Still according to this embodiment, the longitudinal notch 136 defined within the housing 102 can include a gap region 170 that has a narrowed diameter. In one configuration, the surfaces of the housing 102 adjacent to the gap region 170 may include an inclined distal surface 172 and a vertical proximal surface 174. In an additional configuration, the gap region 170 may be provided for the proximal end of the longitudinal notch 136 .
    [033] In use, the user transits the retractable needle set 100b as described above, with reference to the previous figures, from the initial position, as shown in Figures 19 to 22, to the sample extraction position, as illustrated in Figures 12 to 26. During this transition, the plunger 122 is pulled in the proximal direction, as illustrated by the arrow F of Figure 19, and a fluid sample is collected inside the container 128 of the housing 102, through the opening, as described above. As the plunger advances in the proximal direction, the ramp stops 160 of each of the hanging arms 138, 140 are advanced past the limits 166 formed entirely with the housing 102. As the ramp stop 160 is directed towards the limit 166 , the inclined proximal surface 162 of the ramp stop 160 allows the protrusion 168 of boundary 166 to be deflected out of the way of the hanging arms 138, 140, allowing the plunger to be advanced in the proximal direction in the direction of the arrow F of Figure 19. As shown in Figures 23 and 25 to 26, once the plunger 122 is fully extended for maximum extraction, the most distal ramp stop 160 touches the projections 168. In this configuration, the vertical distal surface 164 of the ramp stop 160 contacts the projection 168 and prevents the movement of the plunger 122 in the distal direction. It should be noted here that even in the orientation of a partial sample extraction in which the plunger 122 is only partially removed from housing 102, the plunger 122 is still blocked by the limits 166 until the cannula 114 is retracted.
    [034] Once the plunger has been moved to the maximum sample extraction position, as shown in Figures 23 to 26, the user can move the needle retraction member 116 from the initial position, as shown in Figures 19 to 26 , to the retracted position, as shown in Figures 27 to 30. During this transition, the needle retraction member 116 is advanced along the longitudinal notch 136 and through the gap region 170 to retract the needle cannula 114 into the hole hollow 110 of housing 102. As the needle retraction member 116 is advanced through the gap region 170, the contact parts 152, 154 of the needle retraction member 116 contact the inclined distal surface 172 (shown in Figure 19 ) of housing 102 adjacent to the gap region 170 and cam against it, allowing the needle retraction member 116 to pass through the gap region 170. Once the needle retraction member 116 has passed through the region gap ion 170, the contact parts 162, 154 abut against the vertical proximal surface 174 of housing 102 adjacent to the gap region 170 preventing the transfer of the needle retraction member 116 once the transition from the starting position to the position retracted has occurred.
    [035] As specifically illustrated in Figures 29 and 30, the needle retraction member 116 can also include a pair of flanges 176 arranged on opposite sides and oriented in line with the ramp stops 160 of the hanging arms 138, 140 of the piston 122. As the needle retraction member 116 is advanced the proximal direction as illustrated by the arrow G in Figure 29, the flanges of the needle retraction member 116 contact the projections 168 of the limits 166 by pushing the limits 166 in one direction out. The contact of the flanges against the polarization of the protrusions 168 of the limits 166 opens the way for the plunger 122 (as shown in Figure 33) to be transferred to the housing to expel the sample collected from the container in the sample dispensing position, as shown in the Figures 31 to 34, and described above.
    [036] In accordance with an additional embodiment of the present invention, as shown in Figures 35 to 39, a retractable needle assembly 100c may include an elastomeric plug 178 arranged around the needle cannula 114. In this configuration, housing 102 may also include an inner tube 180 ultrasonically welded to an outer tube 182. In certain configurations, inner tube 180 and outer tube 182 can be co-formed as a unitary component. Fitted within the inner tube 180 is a chamber extender 184 that abuts the elastomeric plug 178. The inner tube 180 of housing 102 can define an opening 186 adjacent to the distal end, allowing the proximal end of the cannula 114 and part of the elastomeric plug 178 form a fluid path to the container 128 of the hollow hole 110 to allow the fluid sample to enter the container 128.
    [037] Figures 36 to 39 illustrate the transition from the retractable needle assembly 100c from the initial position, shown in Figure 36, to the sample extraction position, shown in Figure 37, to the retracted position, shown in Figure 38 , for the sample dispensing position, shown in Figure 39. As can be seen in Figures 36 to 39, the housing configuration 102 to include the inner tube 180 and an outer tube 182 with a chamber extender 184 arranged inside of the inner tube 180 allows the transition from the retractable needle assembly 100c as described above, but allows the cannula 114 to be considered shorter. In this modality, the needle retraction member (as commented above) can be connected to the chamber extender 184 instead of the cannula 114 itself.
    [038] As shown in Figure 38, placing the opening 186 adjacent to the distal end of the housing 102 eliminates or greatly reduces the problem of reflux of the fluid sample through the opening 186 when the plunger 122 is advanced in the distal direction to expel the fluid collected 188 from container 128.
    [039] In accordance with yet another embodiment of the present invention, as illustrated in Figures 40 to 45, a retractable needle set 100d includes a flash feature by which a user can determine whether a suitable vein has been accessed from the tip of the cannula 114 by the presence of a small amount of blood at the distal end of housing 102 in an intermittent chamber 190m as shown in Figure 43. In this configuration, an elastomeric plug 178, such as molded TPE, is provided around the distal tip of housing 102. As illustrated in initial position in figure 40, (in which housing 102 includes a frustoconical part around plunger stop 130 of plunger 122) and in Figure 42 (in which housing 102 includes a truncated part around plunger stop 130 of plunger 122), shortened cannula 114 and chamber extender 184 form an intermittent chamber 190 around it, allowing fluid to be drawn into cannula 114, through aperture 186, and into chamber intermittent 190. As shown in Figure 43, due to the small volumetric dimensioning of the intermittent chamber 190, the presence of up to a small amount of fluid sample 188, such as blood, allows the user to immediately detect appropriate cannula access 114 when the plunger is carried over to the sample extraction position. Referring again to Figure 43, the intermittent chamber 190 communicates with the container 128 so that the fluid 188 that flows into the cannula 114 and through the opening 186 finally fills the container 128 as described above.
    [040] As shown in Figure 44, the transition from the retractable needle assembly 100d to the retracted position, in which the cannula 114 is entirely surrounded by housing 102, and subsequent transition to the sample dispensing position, as shown in Figures 41 and 45, occurs as described above with reference to the previous figures. In this configuration, sample backflow through the opening in the cannula is substantially eliminated when the plunger is advanced.
    [041] An additional embodiment of the present invention is illustrated in Figures 46 to 61 in which the retractable needle assembly 100e includes a different geometry for the longitudinal notch 136. In this configuration, the longitudinal notch 136 includes a lock holder 192 to limit the exit of the needle retraction member 116 from the proximal end of the housing 102 while allowing easier assembly of the plunger 122 into the housing 102 prior to use. Similar to the modalities described above, Figures 46 to 49 illustrate the retractable needle assembly 100e in the initial position in which the cannula 114 extends from the a02 housing and the plunger 122 is entirely supplied within the housing 102. The housing 102 includes a part base 194 having the longitudinal notch 136 defined therein, and a flash part 196 connected to the base part 194 in which the intermittent chamber 190 is visible through it.
    [042] Figures 50 to 53 illustrate the retractable needle assembly 100e in the sample extraction position in which the plunger 122 was removed from housing 102. In a configuration, an airtight seal can be provided around the stopper 130 between plunger 122 and housing 102, as will be discussed in the context. As the fluid sample 188 is introduced into the cannula 144, it passes to the intermittent chamber 190 and subsequently to the container 128, as commented above. In this embodiment, there is no opening in the cannula, instead a hole 205 defined in the hub to allow fluid to pass from the cannula to the container. Figures 54 to 57 illustrate a retractable needle assembly 100e in the retracted position in which the needle cannula 114 is fully protected by housing 102. In this configuration, the needle retraction member 116 advances through the gap region 170, as described above , and engages the locking holder 192 to also limit the needle retract member 116 in the retracted position. An additional stop may be provided to prevent the cannula 114 from advancing in the distal direction. Figures 58 to 61 illustrate the retractable needle assembly 100e in the sample expulsion position in which the plunger 122 is transferred to housing 102 to expel liquid from container 128. During the transition from plunger 122, the needle retraction member 116 remains engaged with slot holder 192 and limited to a location that is proximal to the lacu region at 170. In certain configurations, the nose of housing 102 can be staggered and the body of housing 102 can also be staggered to allow clearance during the assembly, and also to allow clearance of the seal at the distal end 106 of the housing 102 during use.
    [043] According to another embodiment of the present invention, sea 100f of Figures 62 to 69, includes a needle retraction member 116 that has a hub part 112 and a button part 110 attached to the hub part 112 by via a spring element 198. In one configuration, button portion 118 includes a base region 200.
    [044] In use, a user transits the retractable needle assembly 100f from the start position, as shown in Figures 62 and 63, to the sample extraction position, as shown in Figures 65 and 65, and subsequently to the retracted position, as shown in Figures 66 and 67, before expelling the contents of the needle set 100f into a secondary collection container. During the transition to the stowed position, a user presses the button portion 118 in a downward direction as illustrated by the arrow G of Figure 65, disengaging the needle retraction member 116 from a first cavity 202 within the longitudinal notch 136 , as shown in Figure 66. The user then slides the needle retraction member 116 in a proximal direction as shown in Figure H of Figure 67 until hub portion 112 contacts a stop 204 of the proximal end of housing 102, and the button portion 118 engages a second cavity 206 within the longitudinal notch 136. The second cavity 206 limits the needle retract member 116 in the retracted position during the transition from the retractable needle assembly 100f to the sample transfer position, as illustrated in Figures 68 to 69 and described below.
    [045] Referring specifically to Figure 63, it is shown that the hollow hole 110f may include a seal 279 adjacent to the distal end 106f of housing 102f. In certain configurations, seal 270 may be an elastomeric O-ring seal. As shown in Figure 63, seal 270 seals the distal end of the hollow hole 110f from the atmosphere in the initial position prior to sample extraction. As shown in Figure 65, as plunger 122f is removed from housing 102f in the proximal direction, fluid from the patient enters cannula 114f and passes through cannula 114f and passes through opening 156F to a distal intermittent chamber part 272f of the 128f container to provide the user with an immediate visual indication that appropriate access to the patient's blood vessel has been performed. Referring to Figure 67, as the cannula 114f is removed to the inside of housing 102f in the stowed position, the contact between seal 270 and an inner wall 274f of housing 102f is interrupted, leaving container 128f open for the atmosphere.
    [046] Referring again to Figures 63, 65 and 67, in certain configurations, a secondary seal 282f can be provided between the inner wall 274f of the container 128f and the plunger 122f to provide a fluid seal around it. In another configuration, the secondary seal 282f can be connected to a distal end 293f of the plunger 122f so that the secondary seal 282f is advanced and retracted into the container 128f with the movement of the plunger 122f. In yet another configuration, the secondary seal forms a sealing arrangement around a chamber extender 184f to provide a seal around it during advancing and retracting the plunger 122f within the container 128f. In yet another configuration, the secondary seal 282f can include a first sealing member 197f disposed between the inner wall 274f of the container 128f and the plunger 122f, and a second sealing member 299f between the plunger 122f and the hub 112f and / or the 184f camera extender.
    [047] Referring again to Figure 67, in certain configurations, the inner wall 274f of the container 128f includes a boundary protrusion 301f that extends from the inner wall 274f to the inner part of the container 128f to limit a proximal end 303f of the stopper 130f against it in a maximum extraction position. Therefore, the plunger 122f is not allowed to advance beyond the limiting protrusion 301f during the sample extraction phase. In certain configurations, the limiting protrusion 301f is positioned in a precise location along the inner wall 274f of the container 128f to correspond to a specific volume of collected sample that can be collected inside the container 128f as the plunger is advanced in the direction proximal.
    [048] In accordance with an additional embodiment of the present invention, the retractable needle set 100g, as shown in Figures 70 to 77m is structured like the retractable needle set 100f described above, with the exception that the posterior limit of the limb of needle retraction 116 against a proximal end 212 of housing 102. In use, a user transits the retractable needle assembly 100g from the initial position, as shown in Figures 70 and 71, to the sample extraction position, as shown in Figures 72 and 73, and subsequently to the retracted position, as shown in Figures 74 and 75. During the transition to the sample transfer position, the needle retraction member 116 engages the lock holder 192 so that a rear surface 214 of the cube 112 contacts and rests against the perimeter surface of the proximal end 212 of the container 102.
    [049] It is noted here that the retractable needle assembly 100g may also include an IV guard 207 removably connected to the distal end of the 102g container, as shown in Figure 78, at connection 209. As shown in Figure 78, the IV protection it can be provided to initially protect the cannula and can be removed by applying rotary force to the IV protection to break the connection 209 with the 102g container.
    [050] In an additional modified design, as illustrated in Figure 79, the plunger 122h may include the plurality of stops on the 160h ramp, described in detail with reference to Figure 34 above, on an internal surface 211h of the plunger 122h. Each 160h ramp stop is adapted to engage a corresponding limit (not shown) arranged in a part of the housing (also not shown), as described above. Also illustrated in Figure 79, the distal end 213h of plunger 122h may include a recessed pocket 215h to define an air pocket inside the chamber to cushion the fluid sample container within it in an effort to also reduce hemolysis of the fluid sample. arranged inside the needle assembly. This configuration essentially creates an air pocket proximal to the fluid sample.
    [051] Referring to Figures 80 to 82, a chamber extender 184i and base region 100i form an alternative needle retraction member 116i according to an embodiment of the present invention. In this configuration, the distal end 221i of the camera extender 184i includes a flashback hole 223i to allow improved visibility of the flash phenomenon, as described herein. The base region 200i also includes a chamfer 225i arranged within a lower surface 227i to also reduce the potential for hemolysis within the needle assembly, as described in the context.
    [052] Referring to Figures 83 and 84, an alternative locking mechanism 313j is illustrated. In this configuration, in the starting position, as shown in Figure 83, the base region 300i includes an initial ramp stop 303j engaged with an initial locking member 305j that limits the needle assembly 305i to an initial position in which the needle cannula is exposed, as described elsewhere in the context. Once the sample collection procedure is complete, a user can move the device from the initial position, as shown in Figure 83, to the extended position, as shown in Figure 84, in which the needle cannula is protected by the housing, as described elsewhere in the context. To transition the needle set 305i, the user needs to lower the button feature 307i of the needle retract member 309i in the downward direction, as illustrated by the arrow V in Figure 83 to disengage the initial ramp stop 303i from the initial lock member 305i . Once disengaged from the initial locking member 305i, the base region 300i, and the camera extender 384i associated with it, can be advanced in a proximal direction by applying force to the button feature 307i in the direction of the Z arrow, as shown in Figure 83. In this configuration, the base region 300i and chamber extender 384i can be advanced into the needle assembly housing, as described here, to transition the needle assembly to the extended position in which the needle cannula is protected by the accommodation. Once a user advances the button feature 307i, and the associated structure, in the proximal direction a sufficient distance to protect the needle cannula inside the housing, the base region 300i can be limited by a second lock member 319i proximally arranged for the initial locking member 305i. Both the initial locking member 305i and the second locking member 319i can be arranged along the plunger or part of the housing, as described herein. The initial locking member 305i and the second locking member 319i can include angled surfaces as described herein allowing one-way transmission from the base region 300i and the camera extender 384i, as also described in the context. The base region 300i may include an appropriate cavity adapted to contain at least part of the initial lock member 305i and / or the second lock member 319i when a user is not applying in the direction of arrow V for the button feature 307i. It is intended here that the modality illustrated in Figures 83 and 84 is similar to the modality described above with the addition of the resource that the user needs to use a force in the direction of both arrow V and arrow Z to move the retractable needle assembly from the position of initial use for extended protected position.
    [053] In certain embodiments, the present invention described herein, requires that the cannula be removed into the housing before the blood is expelled from the needle assembly into a secondary collection container. The requirement that the cannula be fully protected by the housing prior to transferring the sample, the incidence of inadvertent needle wounds can be greatly reduced. In addition, the device of the present invention eliminates the concern of transferring the sample through a cannula, which is believed to contribute to hemolysis in conventional syringe assemblies.
    [054] Although the present invention is described with reference to several different modalities of a retractable needle set and method of use, those skilled in the art can make modifications and changes without departing from the scope and spirit. Therefore, the above detailed description is intended to be illustrative and not restrictive.
    权利要求:
    Claims (12)
    [0001]
    1. Retractable needle set (100) for fluid collection, FEATURED by the fact that it comprises: a housing (102) comprising: a proximal end (104) and a distal end (106), a side wall (108) having a longitudinal notch (136) defined within a part of the side wall (108), and a hollow hole (110) extending between the proximal end (104) and the distal end (106) of the housing (102); an elongated plunger (122) having a proximal end (124) and a distal end (126), the distal end (126) of the plunger (122) defining a container (128) within the hollow hole (110) to contain a fluid within the container (128), the plunger adapted to slide in the hollow hole (110) from a transfer position in which the distal end (126) of the plunger (122) contacts the distal end (126 ) of the housing (102) to a maximum extraction position; a hub (112) disposed at least partially within the hollow hole (110), wherein a cannula (114) is connected to a part of the hub (112); a stopper (130) connected to the distal end (126) of the elongated piston (122) and slidably advanced into the hollow hole (110) to form a substantially hermetic seal with the hollow hole (110), the stopper (130 ) is arranged inside the hollow hole (110) in a location entirely distal to the hub (112); and a needle retraction member (116), for manually selectable advance with respect to a part of the housing (102), engaged with the hub (112), in which the needle retraction member (116) can be advanced from from an initial position in which at least a part of the cannula (114) is arranged outside the housing (102), to a retracted position in which the cannula (114) is entirely surrounded by the housing (102), in which in the initial and in the retracted position the needle retraction member (116) is aligned within the longitudinal notch (136), in which the elongated plunger (122) can be advanced around at least part of the hub (112) to extract the fluid to inside the container (128) or expel fluid from the container (128), and where once the needle retraction member (116) is transitioned to the stowed position, the hub (112) and the cannula (114) remain stationary inside the bore (110) with respect to the housing (102) during the transfer of the piston (122) to transfer position.
    [0002]
    2. Retractable needle assembly (100) according to claim 1, CHARACTERIZED by the fact that the needle retraction member (116) extends at least partially through a part of the side wall (108) of the housing (102 ).
    [0003]
    3. Retractable needle assembly (100), according to claim 1, CHARACTERIZED by the fact that the hub (112) and the needle retraction member (116) are co-formed.
    [0004]
    4. Retractable needle assembly (100) according to claim 1, CHARACTERIZED by the fact that it additionally comprises a seal (270) disposed inside the hollow hole (110) and positioned over a part of the cannula (114) when the cannula (114) is in the initial position so as to form an airtight chamber within the container (128).
    [0005]
    5. Retractable needle assembly (100) according to claim 4, CHARACTERIZED by the fact that the cannula (114) comprises an opening (156) surrounded by the container to allow fluid to enter the cannula (114) for pass to the container (128).
    [0006]
    6. Retractable needle assembly (100) according to claim 1, CHARACTERIZED by the fact that the retraction of the plunger (122) elongated from an initial position in which the plunger is substantially disposed within the hollow hole (110) , to a retracted position in which the plunger (122) is substantially disposed outside the hollow bore (110), induces a vacuum within the container to extract fluid into the container (128).
    [0007]
    7. Retractable needle assembly (100) according to claim 6, CHARACTERIZED by the fact that the transition from the needle retraction member (116) from the initial position to the retracted position allows the transfer of the elongated plunger (122 ) into the hollow hole (110) to expel fluid from the container (128).
    [0008]
    8. Retractable needle assembly (100) according to claim 1, CHARACTERIZED by the fact that the elongated plunger (122) comprises a pair of pendant arms (138, 140), with each arm (138, 140) comprising a projection (148) slidably arranged within a corresponding side notch (144, 146) defined within the side wall (108) of the housing (102), each side notch (144, 146) spaced from the longitudinal notch (136) .
    [0009]
    9. Retractable needle assembly (100) according to claim 1, CHARACTERIZED by the fact that it additionally comprises a lock (134) to prevent the transfer of the needle retraction member (116) once the retraction member of needle (116) has been transitioned from the starting position to the stowed position.
    [0010]
    10. Retractable needle assembly (100) according to claim 1, CHARACTERIZED by the fact that the elongated piston (122) comprises a plurality of ramp stops (160) arranged over an extension of the piston (122) extending between the distal end (126) and the proximal end (124) of the elongated piston (122), and where the proximal end (104) of the housing (102) defines at least one limit (166) adapted to receive a ramp stop (160), so that the advance of the plunger (122) with respect to the proximal end (104) of the housing (102) is allowed in the proximal direction and the advance of the plunger (122) with respect to the proximal end (104) of the housing (102) in the distal direction is limited by the interaction of at least one ramp stop (160) and at least one limit (166).
    [0011]
    11. Retractable needle assembly (100) according to claim 11, CHARACTERIZED by the fact that the needle retraction member (116) also comprises at least one flange (176) adapted to contact at least one protrusion ( 168) when the elongated plunger (122) is in a fully retracted position to allow transfer of the plunger (122) into the hollow bore (110).
    [0012]
    12. Retractable needle assembly (100) according to claim 1, CHARACTERIZED by the fact that the distal end (106) of the housing (102) includes an intermittent chamber (190) to indicate venous access.
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    同族专利:
    公开号 | 公开日
    BR112013031383A2|2016-12-06|
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    USD823461S1|2012-12-14|2018-07-17|Retractable Technologies, Inc.|Slimline syringe with offset needle retraction chamber and frontal attachment|
    USD829891S1|2012-12-14|2018-10-02|Retractable Technologies, Inc.|Syringe with offset needle retraction chamber and frontal attachment|
    KR102349487B1|2016-08-24|2022-01-10|벡톤 디킨슨 앤드 컴퍼니|device for obtaining a blood sample|
    ES2675824B1|2017-01-12|2019-04-29|Biotechnology Inst I Mas D Sl|CONTAINER DEVICE FOR THE COLLECTION, STORAGE AND PROCESSING OF BLOOD OR A BLOOD COMPOUND|
    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-10-08| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-08-25| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2021-01-19| B09A| Decision: intention to grant|
    2021-03-09| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 08/06/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201161494615P| true| 2011-06-08|2011-06-08|
    US61/494,615|2011-06-08|
    PCT/US2012/041614|WO2012170855A1|2011-06-08|2012-06-08|Safety blood collection syringe having manually retractable needle|
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