CN214434417U

CN214434417U - Novel arteriovenous puncture needle

Info

Publication number: CN214434417U
Application number: CN202022952899.0U
Authority: CN
Inventors: 张瑞芹
Original assignee: Chinese PLA General Hospital
Current assignee: Chinese PLA General Hospital
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-10-22
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses a novel arteriovenous puncture needle, including the needle body, the inside center department of needle body is provided with the puncture steel needle, puncture steel needle both ends are passed the needle body and are exposed outside the needle body, the inside first spout that is provided with of needle body, first spout is seted up in needle body front end center department on the right side, the inside embedding of first spout has the promotion piece, the puncture steel needle is fixed in and is promoted a bottom, the inside telescopic machanism that is provided with of first spout, the inside front end fixed connection fixed block that is located of needle body top surface, the inside fixed establishment that is provided with of fixed block, the anterior fixed block fixedly connected with welding block that is close to of needle body top surface, the welding block top is provided with positioning mechanism. The utility model discloses, promote the piece and can receive the effect of first spring rebound force, will puncture the steel needle and stimulate inside the needle body, avoided the syringe needle to expose outside to reduced the emergence of being stabbed the phenomenon by the syringe needle, reduced the injury to medical personnel and patient, promoted the practicality of device.

Description

Novel arteriovenous puncture needle

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a novel arteriovenous pjncture needle.

Background

Arteriovenous puncture is a technique commonly used in clinic, and venipuncture is often used for blood drawing examination and transfusion treatment, while arteriovenous puncture is most commonly used in anesthesia or operation and continuous arterial blood pressure monitoring of critically ill patients, and is also used for performing special examinations or treatments such as blood gas analysis, selective angiography and treatment, cardiac catheter placement, hemodialysis treatment, and the like.

When the existing arteriovenous puncture needle is used, medical workers puncture the needle into a blood vessel of a patient, the needle can puncture the blood vessel due to slight shaking of the body, and when the medical workers take the needle out of the blood vessel of the patient, the needle point at the top of the needle body is still exposed outside, so that the needle point can puncture the body of the medical workers or the patient, and secondary injury is caused.

And when novel arteriovenous puncture was taken a blood sample to the patient, some medical personnel of practicing just can not find the position of thorn mouth easily when the operation, when pulling out, can not carry out timely accurate pressing for patient's wound bleeding to probably lead to the emergence of the blue or green phenomenon of later stage wound silt.

Therefore, a novel arteriovenous puncture needle is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a novel arteriovenous puncture needle.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel sound vein pjncture needle, includes the needle body, the inside center department of needle body is provided with the puncture steel needle, puncture steel needle both ends are passed the needle body and are exposed outside the needle body, the inside first spout that is provided with of needle body, first spout is seted up in needle body front end center department on the right side, the inside embedded promotion piece that has of first spout, the puncture steel needle is fixed in and is promoted a bottom, the inside telescopic machanism that is provided with of first spout, the inside front end fixed connection fixed block that is located of needle body top surface, the inside fixed establishment that is provided with of fixed block, the anterior fixed block department fixedly connected with welding block that is close to of needle body top surface, the welding block top is provided with positioning mechanism.

Preferably, telescopic machanism is including the embedded piece that promotes in first spout inside, it holds between the fingers the piece to promote a left end fixedly connected with, it has seted up the fixed orifices to promote a top surface, promote a leading flank fixedly connected with first spring, first spring cup joints on the puncture steel needle, first spring other end fixed connection is in needle body inner wall, needle body top inner wall fixedly connected with inserts the piece two sets of, and is two sets of insert the piece and set up respectively in puncture steel needle both sides.

Preferably, fixed establishment is including being fixed in the fixed block of needle body inner wall front end, the inside fixedly connected with of fixed block inserts the piece, insert the inside second spout that has seted up of piece, second spout bottom fixedly connected with limiting plate, the limiting plate cover is located and is inserted the pole outside, it has the insertion head to insert the welding of pole bottom, insertion head and fixed orifices swing joint, the second spring has been cup jointed to the insertion pole outside, second spring one end is fixed in the limiting plate top surface, the second spring other end is fixed in and inserts on the piece top inner wall, and inserts the welding of pole top and have and bulldoze the board.

Preferably, positioning mechanism is including fixing the welding piece in needle body top, the welding of welding piece top surface has the U-shaped board, the hole groove has been seted up to the inboard center department of two walls of U-shaped board, the inside embedded movable mechanism that has of hole groove.

Preferably, the movable mechanism comprises two groups of rotating blocks embedded in the hole grooves, a connecting rod is connected between the two groups of rotating blocks, a locating plate is fixedly connected to the outer portion of the connecting rod, and a third spring is arranged between the rotating blocks and the connecting rod.

Preferably, the pushing block moves in the first sliding groove, the puncturing steel needle is pushed to move, and meanwhile the first spring is compressed, the maximum telescopic distance of the first spring is equal to the moving distance of the pushing block, and the length of the distance from the pushing block to the limiting block is equal to the length of the distance from the pushing block to the limiting block.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the arranged telescopic device, when the device is used, medical personnel only needs to push the holding and pinching block, so that the pushing block can drive the puncture steel needle to slide in the first sliding groove, the first spring is further compressed, when the device moves to the limiting block, the needle head of the puncture steel needle enters the blood vessel of a patient to draw blood, only the pushing and pressing plate at the top needs to be pushed, the insertion rod pushes the insertion head to move downwards, the second spring is further compressed, the insertion head is fixed with the fixing hole formed in the top of the pushing block, the fixing effect on the telescopic mechanism is achieved, the device is not influenced by the rebound force of the first spring, the blood drawing is more stable, the needle head is prevented from puncturing the blood vessel, when the blood drawing is finished, only the pushing and pressing plate needs to be pulled, the insertion head is separated from the fixing hole, at the moment, the pushing block can be acted by the first spring rebound force, the puncture steel needle is pulled into the needle body, and the needle head is prevented from being exposed outside, thereby reducing the occurrence of the phenomenon of being punctured by the needle head, reducing the injury to medical care personnel and patients and improving the practicability of the device.

2. Through the positioner who sets up, when the position needs to be sought, when the puncture steel needle pierces patient's blood vessel, can rotate the inside rotatory piece that sets up of U-shaped board, rotatory piece rotation can drive the connecting rod rotatory to make and seek the position board rotatory, the top of seeking the position board is unanimous with the top of puncture steel needle, so can pinpoint the position of wound, carry out accurate pressing, thereby the excessive phenomenon of bleeding when having avoided the syringe needle to extract, patient's wound degree of silting up blue or green has been alleviateed.

Drawings

FIG. 1 is a schematic view of the main structure of a novel arteriovenous puncture needle provided by the present invention;

FIG. 2 is a schematic view of the main view structure of a novel arteriovenous puncture needle provided by the utility model;

FIG. 3 is a schematic diagram of a side view structure of a novel arteriovenous puncture needle provided by the present invention;

FIG. 4 is a schematic diagram of a side view of the structure of the novel arteriovenous puncture needle provided by the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 3;

fig. 6 is a front view of the positioning mechanism of the novel arteriovenous puncture needle provided by the utility model.

In the figure: 1. a needle body; 2. puncturing a steel needle; 3. a first chute; 4. a pushing block; 5. taking and kneading the block; 6. a fixing hole; 7. a first spring; 8. a limiting block; 9. a fixed block; 10. inserting a block; 11. a second chute; 12. a limiting plate; 13. an insertion rod; 14. an insertion head; 15. a second spring; 16. a push plate; 17. welding the blocks; 18. a U-shaped plate; 19. a hole groove; 20. rotating the block; 21. a connecting rod; 22. a position searching plate; 23. and a third spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-6, a novel arteriovenous puncture needle, including

needle body

1, 1 inside center department of needle body is provided with

puncture steel needle

2, 2 both ends of puncture steel needle pass needle body 1 and expose in 1 outside of needle body, 1 inside first spout 3 that is provided with of needle body, first spout 3 is seted up in 1 front end center off the right side department of needle body, 3 inside embedded promotion pieces 4 that have of first spout, puncture steel needle 2 is fixed in and promotes 4 bottoms of piece, 3 inside telescopic machanisms that are provided with of first spout, 1 top surface inside of needle body is located front end fixed connection fixed block 9, the inside fixed establishment that is provided with of

fixed block

9, 1 top surface front portion of needle body is close to fixed block 9 fixedly connected with welding block 17, welding block 17 top is provided with positioning mechanism.

The telescopic mechanism comprises a pushing block 4 embedded in a first chute 3, a holding and pinching block 5 is fixedly connected to the left end of the pushing block 4, a fixed hole 6 is formed in the top surface of the pushing block 4, a first spring 7 is fixedly connected to the front side surface of the pushing block 4, the first spring 7 is sleeved on a puncture steel needle 2, the other end of the first spring 7 is fixedly connected to the inner wall of a needle body 1, two groups of inserting blocks 10 are fixedly connected to the inner wall of the top of the needle body 1, the two groups of inserting blocks 10 are respectively arranged on two sides of the puncture steel needle 2, the pushing block 4 moves in the first chute 3, the first spring 7 is compressed while the puncture steel needle 2 is pushed to move, the maximum telescopic distance of the first spring 7 is equal to the moving distance of the pushing block 4 and is equal to the distance from the pushing block 4 to a limiting block 8, when a medical worker carries out vein puncture needles to a patient, the pushing and pinching block 5 can drive the puncture steel needle 2 to move in the first chute 3 by pushing block 4, the first spring 7 is compressed, and after the needle is threaded, the first spring 7 can be rebounded, so that the pushing block 4 can move reversely in the first sliding groove 3, and the needle head of the puncture steel needle 2 cannot be exposed to the outside to cause the puncture phenomenon.

The fixing mechanism comprises a fixing block 9 fixed at the front end of the inner wall of the needle body 1, an inserting block 10 is fixedly connected inside the fixing block 9, a second chute 11 is arranged inside the inserting block 10, a limiting plate 12 is fixedly connected to the bottom end of the second chute 11, the limiting plate 12 is sleeved outside an inserting rod 13, an inserting head 14 is welded at the bottom of the inserting rod 13 and movably connected with a fixing hole 6, a second spring 15 is sleeved outside the inserting rod 13, one end of the second spring 15 is fixed on the top surface of the limiting plate 12, the other end of the second spring 15 is fixed on the inner wall of the top of the inserting block 10, a pushing plate 16 is welded at the top of the inserting rod 13, when the pushing block 4 moves, the pushing plate 16 can be pushed when the moving limiting block 8 moves, the inserting rod 13 slides inside the second chute 11, the second spring 15 is compressed, the inserting head 14 at the bottom of the inserting rod 13 is fixed in the fixing hole 6 at the top of the pushing block 4, thereby fix promotion piece 4 for puncture steel needle 2 can not receive the influence of first spring 7 bounce when drawing blood to patient, after drawing blood the end, only need stimulate push plate 16 can, the practicality of device has been promoted to the step of simple pjncture needle.

Positioning mechanism is including fixing the welding piece 17 in needle body 1 top, welding piece 17 top surface welding has U-shaped plate 18, hole groove 19 has been seted up to two inboard center departments of wall of U-shaped plate 18, the inside embedded two sets of rotatory pieces 20 that have of hole groove 19, be connected with connecting rod 21 between two sets of rotatory pieces 20, connecting rod 21 outside fixedly connected with seeks a board 22, be provided with third spring 23 between rotatory piece 20 and the connecting rod 21, when the doctor draws blood to the patient, need to push puncture steel needle 2 inside the blood vessel, for some new hands, at the in-process of pulling out, can look for inaccurate male wound, lead to ending back pressing untimely, it is inaccurate, the phenomenon that can't stanch and later stage silted up appears, when puncture steel needle 2 inserts, the seek a board 22 at top can rotate as required, the emergence of can not finding wound phenomenon has been prevented, patient's pain has been reduced.

The working principle is as follows: when the device uses, medical personnel only need promote to take and hold between the fingers piece 5, can make and promote piece 4 and drive puncture steel needle 2 and slide in 3 inside of first spout, further compress first spring 7, when removing stopper 8, puncture steel needle 2's syringe needle gets into patient's blood vessel and draws blood. Only need push away the push plate 16 at top, make the insert rod 13 promote the first 14 downstream of inserting, further compress second spring 15, it is fixed with the fixed orifices 6 that promote 4 tops of piece to make the head of inserting 14, thereby reach the fixed effect to telescopic machanism, make the device not receive the influence of first spring 7 bounce, when drawing blood and finishing, only need stimulate push plate 16, make the head of inserting 14 and fixed orifices 6 separation, at this moment, it can receive the effect of first spring 7 bounce power to promote piece 4, stimulate puncture steel needle 2 to needle body 1 inside, the needle head is exposed outside, thereby the emergence of being stabbed by the needle head has been reduced.

When needing to seek a position, when puncturing patient's blood vessel at puncture steel needle 2, can rotate the inside rotatory piece 20 that sets up of U-shaped board 18, rotatory piece 20 is rotatory can drive connecting rod 21 rotatory to the feasible position board 22 of seeking is rotatory, and the top of seeking position board 22 is unanimous with the top of puncture steel needle 2, so can pinpoint the position of wound, carries out accurate pressing.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A novel arteriovenous puncture needle comprises a needle body (1) and is characterized in that a puncture steel needle (2) is arranged at the center inside the needle body (1), the two ends of the puncture steel needle (2) penetrate through the needle body (1) and are exposed outside the needle body (1), a first sliding groove (3) is arranged inside the needle body (1), the first sliding groove (3) is arranged at the position, on the right side, of the center of the front end of the needle body (1), a pushing block (4) is embedded inside the first sliding groove (3), the puncture steel needle (2) is fixed at the bottom of the pushing block (4), a telescopic mechanism is arranged inside the first sliding groove (3), a fixed block (9) is fixedly connected at the front end inside of the top surface of the needle body (1), a fixing mechanism is arranged inside the fixed block (9), and a welding block (17) is fixedly connected at the position, close to the fixed block (9), of the front part of the top surface of the needle body (1), and a positioning mechanism is arranged at the top of the welding block (17).

2. The novel arteriovenous puncture needle is characterized by comprising a pushing block (4) embedded in a first sliding groove (3), wherein the left end of the pushing block (4) is fixedly connected with a pinching block (5), a fixed hole (6) is formed in the top surface of the pushing block (4), a first spring (7) is fixedly connected to the front side surface of the pushing block (4), the first spring (7) is sleeved on a puncture steel needle (2), the other end of the first spring (7) is fixedly connected to the inner wall of the needle body (1), two groups of insertion blocks (10) are fixedly connected to the inner wall of the top of the needle body (1), and the two groups of insertion blocks (10) are respectively arranged on two sides of the puncture steel needle (2).

3. A novel arteriovenous puncture needle according to claim 1 characterized in that the fixing mechanism comprises a fixing block (9) fixed at the front end of the inner wall of the needle body (1), an inserting block (10) is fixedly connected inside the fixed block (9), a second sliding groove (11) is formed inside the inserting block (10), a limiting plate (12) is fixedly connected to the bottom end of the second chute (11), the limiting plate (12) is sleeved outside the insertion rod (13), the bottom of the insertion rod (13) is welded with an insertion head (14), the insertion head (14) is movably connected with the fixed hole (6), a second spring (15) is sleeved outside the insert rod (13), one end of the second spring (15) is fixed on the top surface of the limit plate (12), the other end of the second spring (15) is fixed on the inner wall of the top of the insertion block (10), and a pushing plate (16) is welded on the top of the insertion rod (13).

4. The novel arteriovenous puncture needle is characterized by comprising a welding block (17) fixed above the top of the needle body (1), wherein a U-shaped plate (18) is welded on the top surface of the welding block (17), a hole groove (19) is formed in the center of the inner side of two walls of the U-shaped plate (18), and a movable mechanism is embedded in the hole groove (19).

5. A novel arteriovenous puncture needle according to claim 4, characterized in that the movable mechanism comprises two groups of rotating blocks (20) embedded in the hole groove (19), a connecting rod (21) is connected between the two groups of rotating blocks (20), a position searching plate (22) is fixedly connected to the outside of the connecting rod (21), and a third spring (23) is arranged between the rotating blocks (20) and the connecting rod (21).

6. The novel arteriovenous puncture needle is characterized in that the pushing block (4) moves in the first sliding groove (3), the puncturing steel needle (2) is pushed to move while the first spring (7) is compressed, and the maximum telescopic distance of the first spring (7) is equal to the moving distance of the pushing block (4) and is equal to the distance from the pushing block (4) to the limiting block (8).