Retractable puncture-proof disposable vein hemostix

Abstract

The utility model relates to the technical field of manufacturing of medical instruments, in particular to a retraction type puncture-proof disposable vein hemostix, which can realize full-wrapping type locking of a needle body after blood sampling so as to effectively prevent puncture, and is characterized in that the retraction type puncture-proof disposable vein hemostix is further provided with a retraction type locking sleeve sleeved on a needle handle, the retraction type locking sleeve is in a barrel shape with two open ends, and the retraction type locking sleeve is sleeved on a needle handle of the retraction type locking sleeve. A guide groove is axially formed in the retraction type locking sleeve, the rear end of the guide groove is open, a sliding part which is located in the guide groove and slides along the guide groove is arranged on the needle handle, a needle handle stop part is arranged on the outer wall of the retraction type locking sleeve corresponding to the front end of the guide groove, and a locking structure matched with the needle handle is arranged on the outer wall of the retraction type locking sleeve corresponding to the rear end of the guide groove. The locking structure comprises an embedding groove and an embedding protrusion which are arranged on the retraction type locking sleeve and the needle handle respectively.

Description

Technical field:

[0001] The utility model relates to the technical field of medical device manufacturing, in particular to a retractable needle-puncture-proof disposable venous blood collector which can achieve full-wrapped locking of a needle body after blood collection, thereby effectively preventing puncture injuries. Background technology:

[0002] Disposable venous blood collectors are widely used in clinical practice. They mainly include blood collection needles, needle handles, and related pipes for connecting containers. After blood collection, the used blood collectors will be discarded and handled by professional waste disposal personnel. The anti-puncture protection mechanism of existing blood collectors is relatively simple. For example, a needle sleeve is used to protect the used blood collection needle, or a shrapnel is used to protect the needle tip. Such mechanisms often fall off the needle body during the transportation and processing of discarded blood collectors, and still cannot achieve reliable anti-puncture protection. Summary of the invention:

[0003] In view of the shortcomings and deficiencies in the existing technology, the utility model proposes a retractable needle-proof disposable venous blood collection device with a reasonable structure, simple operation, and the ability to fully wrap and lock the needle body after blood collection, thereby effectively preventing puncture injuries.

[0004] The utility model is achieved through the following measures:

[0005] A retractable, needle-stick-proof, disposable venous blood collector comprises a blood collection needle and a needle handle, wherein the front end of the needle handle is provided with a needle seat, and the blood collection needle is fixed on the needle seat. The invention is characterized in that a retractable locking sleeve is provided which is sleeved on the needle handle, the retractable locking sleeve is in the shape of a tube with open ends, and a guide groove arranged along the axial direction is provided on the retractable locking sleeve, the rear end of the guide groove is open, a sliding portion is provided on the needle handle which is located in the guide groove and slides along the guide groove, a needle handle stopping component is provided on the outer wall of the retractable locking sleeve corresponding to the front end of the guide groove, and a locking structure which cooperates with the needle handle is provided on the outer wall of the retractable locking sleeve corresponding to the rear end of the guide groove, and the locking structure comprises an engaging groove and an engaging protrusion which are respectively provided on the retractable locking sleeve and the needle handle.

[0006] The needle handle stopping component on the retractable locking sleeve of the utility model is a stopping protrusion. Furthermore, the needle handle includes a needle holding body connected to the needle seat. The side of the needle holding body is provided with a sliding portion that cooperates with the guide groove, and is further provided with a needle holding fin connected to the sliding portion. The needle holding fin extends along the guide groove to the outside of the retractable locking sleeve. The front end of the needle holding body cooperates with the stopping protrusion, so that the outer wall of the front end of the needle holding body is pressed by the stopping protrusion, so that when not in use, the relative positions of the needle handle and the retractable locking sleeve are fixed.

[0007] The utility model further provides a baffle on the outer wall of the retractable locking sleeve at the front end of the stop protrusion, namely near the blood sampling operation end, to improve the working reliability of the device.

[0008] The retractable locking sleeve of the present invention is also provided with a needle withdrawal boss on the outer wall, which is used to facilitate the operator to retract the blood collection needle into the retractable locking sleeve with one hand after the blood collection is completed. Furthermore, the needle withdrawal boss is arranged at the front part of the retractable locking sleeve.

[0009] The retractable locking sleeve of the utility model is in the shape of a square tube, and the front end of the needle holding body of the corresponding needle handle is in the shape of a cube to prevent the entire sleeve from rolling.

[0010] The utility model provides an engaging protrusion between the needle holding body and the needle seat on the needle handle, and an engaging groove matching the engaging protrusion is provided on the rear end of the outer wall of the retractable locking sleeve. Therefore, when the needle holding body drives the needle seat to retract to the rear end of the retractable locking sleeve, that is, after the blood collection needle body is completely located in the retractable locking sleeve, the engaging protrusion on the needle handle and the engaging groove of the retractable locking sleeve are hooked and locked, completing the wrapped locking of the needle body.

[0011] When the utility model leaves the factory, the needle handle is pushed to the front end of the retractable locking sleeve along the rear end of the guide groove, and the side needle holding fin connected to the needle handle extends out along the guide groove. At this time, the blood collection needle of the blood collection device is exposed to the outside of the front end of the retractable locking sleeve. After blood collection is completed, the needle handle can be moved backward along the guide groove by pushing the needle withdrawal boss on the retractable locking sleeve until the engaging protrusion on the needle handle is locked into the engaging groove at the rear end of the retractable locking sleeve. At this time, the needle body of the blood collection device is completely wrapped by the retractable locking sleeve, and the retractable locking sleeve and the needle handle will not move during transportation, thereby ensuring that the needle body of the blood collection needle after use will not be exposed, effectively preventing puncture injuries.

[0012] Compared with the prior art, the utility model has the obvious advantages of reasonable structure, simple assembly, stable locking and the like. Description of the drawings:

[0013] Attachment Figure 1 It is a schematic structural diagram of the initial state of the utility model.

[0014] Attachment Figure 2 This is a diagram of the needle body of the present invention after retraction.

[0015] Attachment Figure 3 It is a structural schematic diagram of the retractable locking sleeve in the utility model.

[0016] Attachment Figure 4 This is a second angle structural diagram of the retractable locking sleeve in the utility model.

[0017] Attachment Figure 5 It is a side structural diagram of the retractable locking sleeve in the utility model.

[0018] Attachment Figure 6 yes Figure 5A partial enlarged view of .

[0019] Attachment Figure 7 It is a structural schematic diagram of the needle handle in the utility model.

[0020] Attachment Figure 8 This is a schematic diagram of the needle handle in the present invention from another angle.

[0021] Figure numerals: retractable locking sleeve 1, needle handle 2, guide groove 3, fitting groove 4, fitting protrusion 5, stop protrusion 6, needle holding body 7, needle holding fin 8, baffle 9, needle withdrawal boss 10, boss inclined surface 11. Specific implementation method:

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] As attached Figure 1 、 2 As shown, the utility model proposes a retractable needle-stick-proof disposable venous blood collector, which is provided with a blood collection needle and a needle handle 2, wherein the front end of the needle handle 2 is provided with a needle seat, the blood collection needle is fixed on the needle seat, and a retractable locking sleeve 1 is provided which is sleeved on the needle handle. The retractable locking sleeve 1 is cylindrical with open ends, and a guide groove 3 arranged along the axial direction is provided on the retractable locking sleeve 1, and the rear end of the guide groove 3 is open. A sliding portion is provided on the needle handle, which is located in the guide groove 3 and slides along the guide groove. A needle handle stopping component is provided on the outer wall of the retractable locking sleeve 1 corresponding to the front end of the guide groove 3, and a locking structure cooperating with the needle handle is provided on the outer wall of the retractable locking sleeve 1 corresponding to the rear end of the guide groove 3. The locking structure includes an engaging groove 4 and an engaging protrusion 5 respectively provided on the retractable locking sleeve 1 and the needle handle.

[0024] The needle handle stopping component on the retractable locking sleeve 1 of the utility model is a stop protrusion 6. Furthermore, the needle handle includes a needle holding body 7 connected to the needle seat. The side of the needle holding body 7 is provided with a sliding portion that cooperates with the guide groove 3, and is further provided with a needle holding fin 8 connected to the sliding portion. The needle holding fin 8 extends along the guide groove 3 to the outside of the retractable locking sleeve 1. The front end of the needle holding body 7 cooperates with the stop protrusion 6, so that the outer wall of the front end of the needle holding body 7 is pressed by the stop protrusion 6, so that when not in use, the relative position of the needle handle and the retractable locking sleeve 1 is fixed.

[0025] The present invention further provides a baffle 9 on the outer wall of the retractable locking sleeve 1 at the front end of the stop protrusion 6, namely, near the blood sampling operation end, to improve the working reliability of the device.

[0026] The retractable locking sleeve 1 of the present invention is further provided with a needle withdrawal boss 10 on the outer wall, which is used to facilitate the operator to retract the blood collection needle into the retractable locking sleeve 1 with one hand after the blood collection is completed. Furthermore, the needle withdrawal boss 10 is arranged at the front part of the retractable locking sleeve.

[0027] The retractable locking sleeve 1 of the present invention is in the shape of a square tube, and the front end of the needle holding body 7 of the corresponding needle handle is in the shape of a cube to prevent the entire sleeve from rolling.

[0028] An engaging protrusion 5 is provided between the needle holding body 7 and the needle seat on the needle handle of the utility model, and an engaging groove 4 matching the engaging protrusion 5 is provided on the rear end of the outer wall of the retractable locking sleeve 1. Therefore, when the needle holding body drives the needle seat to retract to the rear end of the retractable locking sleeve, that is, after the blood collection needle body is completely located in the retractable locking sleeve 1, the engaging protrusion 5 on the needle handle is hooked and locked with the engaging groove 4 of the retractable locking sleeve, completing the wrapped locking of the needle body.

[0029] Example 1:

[0030] This example provides a high-safety, puncture-proof disposable venous blood collection device. Figure 3 -Attached Figure 8 As shown, a blood collection needle and a needle handle are provided, wherein the front end of the needle handle is provided with a needle seat, the blood collection needle is fixed on the needle seat, and a retractable locking sleeve 1 is provided which is sleeved on the needle handle. The retractable locking sleeve 1 is in the shape of a tube with open ends, and a guide groove 3 arranged along the axial direction is provided on the retractable locking sleeve 1, the rear end of the guide groove 3 is open, and a sliding portion is provided on the needle handle which is located in the guide groove 3 and slides along the guide groove. A needle handle stopping component is provided on the outer wall of the retractable locking sleeve 1 corresponding to the front end of the guide groove 3, and a locking structure which cooperates with the needle handle is provided on the outer wall of the retractable locking sleeve 1 corresponding to the rear end of the guide groove 3. The locking structure includes an engaging groove 4 and an engaging protrusion 5 which are respectively provided on the retractable locking sleeve 1 and the needle handle;

[0031] In this example, a boss slope 11 is provided on the rear side of the stop protrusion 6 to reduce the difficulty of assembling the needle handle and the retractable locking sleeve 1;

[0032] When the utility model leaves the factory, the needle handle is pushed to the front end of the retractable locking sleeve along the rear end of the guide groove, and the side needle holding fin connected to the needle handle extends out along the guide groove. At this time, the blood collection needle of the blood collection device is exposed to the outside of the front end of the retractable locking sleeve. After blood collection is completed, the needle handle can be moved backward along the guide groove by pushing the needle withdrawal boss on the retractable locking sleeve until the engaging protrusion on the needle handle is locked into the engaging groove at the rear end of the retractable locking sleeve. At this time, the needle body of the blood collection device is completely wrapped by the retractable locking sleeve, and the retractable locking sleeve and the needle handle will not move during transportation, thereby ensuring that the needle body of the blood collection needle after use will not be exposed again, effectively preventing puncture injuries.

[0033] Compared with the prior art, the utility model has the obvious advantages of reasonable structure, simple assembly, stable locking and the like.

Claims

1. A retractable needle-puncture-proof disposable venous blood collection device, comprising a blood collection needle and a needle handle, wherein the front end of the needle handle is provided with a needle seat, and the blood collection needle is fixed on the needle seat, characterized in that: A retractable locking sleeve is also provided which is sleeved on the needle handle. The retractable locking sleeve is in the shape of a tube with open ends, and a guide groove arranged along the axial direction is provided on the retractable locking sleeve. The rear end of the guide groove is open, and a sliding portion is provided on the needle handle which is located in the guide groove and slides along the guide groove. A needle handle stopping component is provided on the outer wall of the retractable locking sleeve corresponding to the front end of the guide groove, and a locking structure which cooperates with the needle handle is provided on the outer wall of the retractable locking sleeve corresponding to the rear end of the guide groove. The locking structure includes an engaging groove and an engaging protrusion which are respectively provided on the retractable locking sleeve and the needle handle.

2. The retractable needle-puncture-proof disposable venous blood sampling device according to claim 1, characterized in that: The needle handle stopping component on the retractable locking sleeve is a stopping protrusion.

3. The retractable needle-puncture-proof disposable venous blood sampling device according to claim 1, characterized in that: The needle handle includes a needle holding body connected to the needle seat, a sliding portion that cooperates with the guide groove is provided on the side of the needle holding body, and a needle holding fin connected to the sliding portion is further provided. The needle holding fin extends along the guide groove to the outside of the retractable locking sleeve, and the front end of the needle holding body cooperates with the stop protrusion so that the outer wall of the front end of the needle holding body is pressed by the stop protrusion.

4. The retractable needle-puncture-proof disposable venous blood sampling device according to claim 2, characterized in that: A baffle is provided on the outer wall of the retractable locking sleeve at the front end of the stopping protrusion, that is, close to the blood sampling operation end.

5. The retractable needle-puncture-proof disposable venous blood sampling device according to claim 1, characterized in that: A needle withdrawal boss is also provided on the outer wall of the retractable locking sleeve.

6. The retractable needle-puncture-proof disposable venous blood sampling device according to claim 5, characterized in that: The needle withdrawal boss is arranged at the front part of the retractable locking sleeve.

7. The retractable needle-puncture-proof disposable venous blood sampling device according to claim 1, characterized in that: The retractable locking sleeve is in the shape of a square tube, and the front end of the needle holding body of the corresponding needle handle is in the shape of a cube.

8. The retractable needle-puncture-proof disposable venous blood sampling device according to claim 1, characterized in that: An engaging protrusion is provided between the needle holding body and the needle seat on the needle handle, and an engaging groove matching the engaging protrusion is provided on the rear end of the outer wall of the retractable locking sleeve. Therefore, when the needle holding body drives the needle seat to retract to the rear end of the retractable locking sleeve, that is, after the blood collection needle body is completely located in the retractable locking sleeve, the engaging protrusion on the needle handle and the engaging groove of the retractable locking sleeve are hooked and locked to complete the wrapped locking of the needle body.

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