CN221154117U - Anti-needling blood taking needle - Google Patents

Abstract

The application discloses an anti-needling blood taking needle, which relates to the field of blood taking needles, and comprises a needle tube and a needle head, wherein a poking plate is arranged on the inner wall of the needle tube and slides on the inner wall of the needle tube, the sliding direction of the poking plate is the axial direction of the needle tube, the poking plate is connected with the needle head, the poking plate is provided with a communication hole, the communication hole is communicated with the needle head, the poking plate is provided with a reset spring, and the elastic direction of the reset spring is consistent with the sliding direction of the poking plate; according to the technical scheme, in actual use, the problem that secondary damage is caused to a patient due to incorrect force application direction when the needle head part is pulled out exists, so that the reset spring and the poking plate are arranged, and the poking plate is pressed when the needle is inserted so that the reset spring is contracted, and the poking plate and the needle head part move together; when the needle head is required to be pulled out, the poking piece is loosened, and the position of the poking piece is restored by the elasticity of the reset spring, so that the condition that secondary injury is caused to a patient when the needle head is pulled out is reduced.

Description

A needle-stick-proof blood collection needle

Technical Field

The present application relates to the field of blood collection needles, and more specifically, to an anti-needlestick blood collection needle.

Background technique

A lancet is an instrument used to collect blood samples during medical examinations.

During the puncture process, the needle tip needs to be inserted into the blood vessel, and pressed and limited at the same time to facilitate blood drawing. In actual use, the blood drawing needle needs to be pulled out after the blood drawing is completed. If the force direction is not correct during the pulling out process, it is easy to cause secondary damage to the patient, which needs to be improved.

Utility Model Content

In order to improve the problem of secondary injury to the patient during the removal of the blood collection needle, the present application provides an anti-needlestick blood collection needle.

The present application provides an anti-needlestick blood collection needle, which adopts the following technical solution:

A needlestick-proof blood collection needle comprises a needle tube and a needle head. The inner wall of the needle tube is provided with a paddle, and the paddle slides on the inner wall of the needle tube. The sliding direction of the paddle is the axial direction of the needle tube. The paddle is connected to the needle head. The paddle is provided with a connecting hole, and the connecting hole is connected to the needle head. The paddle is provided with a reset spring, and the elastic direction of the reset spring is consistent with the sliding direction of the paddle.

Through the above technical solution, in actual use, there is a problem that the wrong direction of force is applied when the needle head is pulled out, causing secondary injury to the patient. Therefore, a reset spring and a paddle are provided. When the needle is inserted, the paddle is pressed to cause the reset spring to contract, and the paddle moves together with the needle head. When the needle head needs to be pulled out, the paddle is released, and the elastic force of the reset spring is used to restore the position of the paddle, thereby reducing the situation in which secondary injury to the patient is caused when the needle head is pulled out.

Furthermore, the paddle is provided with a limiting member, and the limiting member limits the movement of the paddle.

Through the above technical solution, in actual use, it is necessary to keep pressing the paddle during the acupuncture process to reduce the situation where the paddle returns to its position due to the elastic force of the return spring, which is quite inconvenient; therefore, a limit member is provided to limit the movement of the fragment, making the acupuncture operation more convenient.

Furthermore, a limiting hole is provided on the side wall of the needle tube, and a limiting groove is provided on the side wall of the paddle. The limiting member includes a limiting spring and a limiting block. The limiting spring is located at the bottom of the limiting groove, and one end of the limiting spring away from the bottom of the limiting groove is connected to the limiting block. The elastic force of the limiting spring limits the movement of the limiting block toward the direction close to the bottom of the limiting groove, and the limiting block is used to pass through the limiting hole.

Through the above technical solution, a limit block and a limit hole are set. When the needle is inserted, the limit block is embedded in the limit hole to limit the further movement of the pick. When the needle head needs to be pulled out, the limit block is pressed to move toward the bottom of the limit groove. The elastic force of the return spring moves the pick to its original position, making it easier to remove the needle head.

Furthermore, the needle tube is provided with a sliding groove, the extension direction of the sliding groove is parallel to the axial direction of the needle tube, the paddle is provided with a sliding plate, the sliding plate is embedded in the sliding groove, the sliding plate slides in the sliding groove, and the sliding direction of the sliding plate is the extension direction of the sliding groove.

Through the above technical solution, if the paddle rotates during the movement, it is easy to cause the limit groove and the limit hole to be misaligned, affecting the subsequent limitation of the paddle. Therefore, a sliding groove and a sliding plate are set, and the sliding plate is embedded in the sliding groove to limit the rotation of the paddle during the movement.

Furthermore, it includes a retention needle, which is provided with a retention hole, the retention hole passes through the retention needle, the penetration direction of the retention hole is the axial direction of the retention needle, the needle head slides in the retention hole, and the sliding direction of the needle head is the penetration direction of the retention hole.

Through the above technical solution, in actual use, there are cases where patients need to have blood drawn or infusions performed multiple times, so an indwelling needle is provided. The indwelling needle is inserted into a blood vessel during use but is not removed. When in use, the needle head slides on the indwelling needle to draw blood or perform infusions, thereby reducing harm to the patient.

Furthermore, a main flow tube is provided on the outer wall of the indwelling needle, and the main flow tube is located on a side of the outer wall of the indwelling needle close to the needle tube, and the main flow tube is connected to the indwelling hole.

Through the above technical solution, a main flow tube is provided, and the main flow tube is connected to the retention hole, so that blood sampling can be performed through the main flow tube, so that various operations can be performed after the retention needle is inserted, which is convenient for overall use.

Furthermore, the main flow pipe is connected with a branch hose 1 and a branch hose 2, the branch hose 1 is connected to the sampling part, and the branch hose 2 is connected to the blood drawing part.

Through the above technical solution, branch hose 1 and branch hose 2 are set, and branch hose 1 is connected to the sampling part, and branch hose 2 is connected to the blood collection part, so that blood can be put into different containers respectively during use, which is convenient for blood extraction and storage.

Furthermore, the branch hose 1 is provided with a flow limiting clamp, and the flow limiting clamp limits the blood from passing through the branch hose 1.

Through the above technical solution, in actual use, there is a situation where only the branch hose 2 needs to be used, so a flow limiting clamp is provided, and the flow limiting clamp is used for blood to enter the branch hose 1, thereby reducing the waste of blood.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) By providing a return spring and a paddle, the paddle is pressed during acupuncture to cause the return spring to contract, and the paddle moves together with the needle head; when the needle head needs to be pulled out, the paddle is released, and the position of the paddle is restored by the elastic force of the return spring, thereby reducing the secondary injury to the patient when the needle head is pulled out;

(2) By providing a sliding groove and a sliding plate, the sliding plate is embedded in the sliding groove to limit the rotation of the paddle during the movement;

(3) By providing an indwelling needle, the indwelling needle is inserted into the blood vessel during use but is not removed. When in use, the needle head slides on the indwelling needle to draw blood or perform infusion, thereby reducing harm to the patient.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an overall schematic diagram of an embodiment.

FIG. 2 is a schematic cross-sectional view of an embodiment with a hard plastic plate.

FIG. 3 is an enlarged schematic diagram of A in FIG. 2 .

Figure numerals: 1. indwelling needle; 2. needle tube; 3. needle head; 4. indwelling hole; 5. main pipe; 6. branch hose 1; 7. branch hose 2; 8. sampling part; 9. blood collection part; 10. current limiting clamp; 11. movable groove; 12. paddle; 13. connecting hole; 14. reset spring; 15. limit member; 16. limit block; 17. limit spring; 18. limit hole; 19. limit groove; 20. sliding groove; 21. sliding plate; 22. hard plastic plate; 23. cotton ball.

Detailed ways

The present application is further described in detail below in conjunction with the accompanying drawings.

The embodiment of the present application discloses an anti-needlestick blood collection needle.

Example:

Referring to Fig. 1 and Fig. 2, an anti-needlestick blood collection needle comprises an indwelling needle 1, a needle tube 2 and a needle head 3. The indwelling needle 1 is provided with an indwelling hole 4, and the indwelling hole 4 penetrates the indwelling needle 1, and the penetration direction of the indwelling hole 4 is located in the axial direction of the indwelling needle 1. The needle head 3 slides in the indwelling hole 4, and the sliding direction of the needle head 3 is the axial direction of the indwelling needle 1. In actual use, the indwelling needle 1 can remain in the state of being inserted into the blood vessel after being inserted into the blood vessel, and the needle head 3 slides in the indwelling hole 4 to draw blood or infuse, thereby reducing secondary damage to the patient.

The outer wall of the indwelling needle 1 is provided with a main flow tube 5, which is located on the side of the outer wall of the indwelling needle 1 close to the needle tube 2, and the main flow tube 5 is connected to the indwelling hole 4. The main flow tube 5 is connected with a branch hose 1 6 and a branch hose 2 7, and the branch hose 1 6 and the branch hose 2 7 are both located at one end of the main flow tube 5 away from the indwelling needle 1. The branch hose 1 6 is used to connect the sampling part 8, and the branch hose 2 7 is used to connect the blood collection part 9. In actual use, the sampling part 8 is a blood collection tube for arterial blood collection, and the blood collection tube is provided with a screw cap for sealing the blood collection tube, and the blood collection part 9 is a blood drawing needle.

Both branch hose 1 6 and branch hose 2 7 are provided with a flow limiting clamp 10. The flow limiting clamp 10 of branch hose 1 6 clamps branch hose 1 6 to limit the blood from moving toward the sampling part 8, and the flow limiting clamp 10 of branch hose 2 7 clamps branch hose 2 7 to limit the blood from moving toward the blood collection part 9.

Referring to Figures 2 and 3, the needle tube 2 is provided with a movable groove 11, and a paddle 12 is provided on the wall of the movable groove 11. The paddle 12 slides in the movable groove 11, and the sliding direction of the paddle 12 is the axial direction of the needle tube 2. One end of the needle head 3 is located in the movable groove 11, and the needle head 3 is connected to the paddle 12. The paddle 12 is provided with a connecting hole 13, and the connecting hole 13 is connected to the needle head 3, and the connecting hole 13 is used to communicate with an external blood drawing or injection structure. The paddle 12 is connected to a reset spring 14, one end of the reset spring 14 is connected to the paddle 12, and the other end is connected to the bottom of the movable groove 11. The elastic force direction of the reset spring 14 is consistent with the sliding direction of the paddle 12, and the reset spring 14 is used to limit the paddle 12 from moving in a direction close to the bottom of the movable groove 11.

The paddle 12 is provided with a limiter 15, and the limiter 15 is used to limit the movement of the paddle 12. A limit hole 18 is provided on the side wall of the needle tube 2, and a limit groove 19 is provided on the side wall of the paddle 12. The limiter 15 includes a limit spring 17 and a limit block 16. The limit spring 17 is located at the bottom of the limit groove 19, and one end of the limit spring 17 away from the bottom of the limit groove 19 is connected to the limit block 16. The elastic force of the limit spring 17 limits the limit block 16 from moving in the direction close to the bottom of the limit groove 19, and the limit block 16 is used to pass through the limit hole 18. When the paddle 12 moves in the direction close to the bottom of the movable groove 11 and causes the needle head 3 to move together, the elastic force of the limit spring 17 causes the limit block 16 to move in the direction away from the bottom of the limit groove 19 and pass through the limit hole 18. By limiting the further movement of the paddle 12 in this way, when the needle head 3 needs to be moved to be removed from the indwelling needle 1, the limit block 16 is pressed so that the end of the limit block 16 away from the bottom of the limit groove 19 abuts against the wall of the sliding groove 20. At this time, the elastic force of the return spring 14 causes the paddle 12 to move in a direction away from the bottom of the moving groove 11, thereby reducing the secondary injury to the patient when the needle head 3 is pulled out. In other embodiments, the limit member 15 can be a limit pin, which passes through the limit hole 18 and is embedded in the limit groove 19 to limit the movement of the paddle 12.

The needle tube 2 is provided with a sliding groove 20, the extension direction of the sliding groove 20 is parallel to the axial direction of the needle tube 2, and the paddle 12 is provided with a sliding plate 21, the sliding plate 21 is embedded in the sliding groove 20, the sliding plate 21 slides in the sliding groove 20, and the paddle 12 slides in the sliding groove 20 through the sliding plate 21, and the sliding direction of the sliding plate 21 is the extension direction of the sliding groove 20. The sliding plate 21 is embedded in the sliding groove 20 to limit the rotation of the paddle 12 during the movement process, so that the subsequent return spring 14 can restore the position of the paddle 12.

In actual use, a hard plastic plate 22 can be fixed by adhesive tape on the patient's skin area to be pierced, a cotton ball 23 is arranged between the hard plastic plate 22 and the patient's skin, and the indwelling needle 1 passes through the hard plastic plate 22 and the cotton ball 23 and then pierces the blood vessel. When the indwelling needle 1 is removed, the cotton ball 23 is used to stop bleeding.

The working principle of this embodiment is:

In actual use, by moving the paddle 12 toward the bottom of the movable groove 11, the paddle 12 drives the needle head 3 to move together, until the elastic force of the limit spring 17 causes the limit block 16 to move away from the bottom of the limit groove 19 and pass through the limit hole 18. After the blood draw or infusion is completed, the limit block 16 is pressed to move toward the bottom of the limit groove 19, and then the elastic force of the reset spring 14 causes the paddle 12 to move away from the bottom of the movable groove 11, thereby reducing the secondary injury to the patient when the needle head 3 is pulled out.

The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims (8)

1. An anti-needlestick blood collection needle, comprising a needle tube (2) and a needle head (3), characterized in that: a paddle (12) is provided on the inner wall of the needle tube (2), the paddle (12) slides on the inner wall of the needle tube (2), the sliding direction of the paddle (12) is the axial direction of the needle tube (2), the paddle (12) is connected to the needle head (3), the paddle (12) is provided with a connecting hole (13), the connecting hole (13) is connected to the needle head (3), the paddle (12) is provided with a reset spring (14), and the elastic force direction of the reset spring (14) is consistent with the sliding direction of the paddle (12). 2. An anti-needlestick blood collection needle according to claim 1, characterized in that: the paddle (12) is provided with a limiting member (15), and the limiting member (15) limits the movement of the paddle (12). 3. An anti-needlestick blood collection needle according to claim 2, characterized in that: a limiting hole (18) is provided on the side wall of the needle tube (2), a limiting groove (19) is provided on the side wall of the paddle (12), the limiting member (15) comprises a limiting spring (17) and a limiting block (16), the limiting spring (17) is located at the bottom of the limiting groove (19), one end of the limiting spring (17) away from the bottom of the limiting groove (19) is connected to the limiting block (16), the elastic force of the limiting spring (17) limits the limiting block (16) from moving in the direction close to the bottom of the limiting groove (19), and the limiting block (16) is used to pass through the limiting hole (18). 4. An anti-needlestick blood collection needle according to claim 1, characterized in that: the needle tube (2) is provided with a sliding groove (20), the extension direction of the sliding groove (20) is parallel to the axial direction of the needle tube (2), the paddle (12) is provided with a sliding plate (21), the sliding plate (21) is embedded in the sliding groove (20), the sliding plate (21) slides in the sliding groove (20), and the sliding direction of the sliding plate (21) is the extension direction of the sliding groove (20). 5. An anti-needlestick blood collection needle according to claim 1, characterized in that it comprises a retention needle (1), the retention needle (1) is provided with a retention hole (4), the retention hole (4) passes through the retention needle (1), the penetration direction of the retention hole (4) is the axial direction of the retention needle (1), the needle head (3) slides in the retention hole (4), and the sliding direction of the needle head (3) is the penetration direction of the retention hole (4). 6. An anti-needlestick blood collection needle according to claim 5, characterized in that: a main flow tube (5) is provided on the outer wall of the indwelling needle (1), and the main flow tube (5) is located on the side of the outer wall of the indwelling needle (1) close to the needle tube (2), and the main flow tube (5) is connected to the indwelling hole (4). 7. An anti-needlestick blood collection needle according to claim 6, characterized in that: the main flow tube (5) is connected to a branch hose 1 (6) and a branch hose 2 (7), the branch hose 1 (6) is connected to the sampling part (8), and the branch hose 2 (7) is connected to the blood collection part (9). 8. An anti-needlestick blood collection needle according to claim 7, characterized in that: the branch hose 1 (6) is provided with a flow limiting clamp (10), and the flow limiting clamp (10) limits the blood from passing through the branch hose 1 (6).