Puncture needle suite for clinical puncture catheterization

By introducing the limit and connection part into the puncture needle kit, the problems of unstable fixation of the puncture needle and the misfeeding of the guide wire into the body are solved, and a higher puncture success rate and safety are achieved.

CN222997914UActive Publication Date: 2025-06-20FUWAI HOSPITAL CHINESE ACAD OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE
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Patent Information

Application Number
CN202421550067.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-02
Publication Date
2025-06-20
Estimated Expiration
2034-07-02

AI Technical Summary

Technical Problem

In clinical puncture operations, the position of the puncture needle is unstable, which can easily lead to offset or blood loss of the puncture needle. Improper withdrawal of the guide wire may lead to the mis-supply of the guide wire into the body, causing adverse events.

Method used

A puncture needle kit is designed, including a limiting portion and a connecting portion. The limiting part realizes stable fixation of the puncture needle through the support cylinder, side wings, flexible suction cup and locking part. The connecting part avoids the guidewire from being accidentally fed into the body through the socket and the connecting head and reduces the space occupied by the guidewire.

Benefits of technology

By fixing the limit part, the deviation of the puncture needle and patient pain are reduced, and the success rate and efficiency of the puncture are improved. The design of the connection prevents the guide wire from being accidentally fed into the body, reduces the space occupied by the guide wire and the risk of the bullet-swinging, and protects the safety of medical staff.

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Abstract

The utility model relates to the technical field of medical instruments, and discloses a puncture needle suite for clinical puncture catheterization, which comprises a puncture needle used for human body puncture and forming a puncture channel, a limiting part used for being fixed with a human body is sleeved on the outer side of the puncture needle, and the limiting part can slide on the outer side of the puncture needle; a guide wire which is fed into a human body and is retained in the human body as a puncture guide piece after the puncture needle is drawn out is arranged in a needle tube of the puncture needle, a retention catheter fed into the human body is sleeved outside the guide wire, and one end, extending out of the retention catheter, of the guide wire is inserted into the connecting part. The puncture needle can be stably positioned through the limiting part of the kit, pain of a patient caused by the puncture needle can be relieved, and the success rate and efficiency of puncture are improved; the guide wire can be prevented from being mistakenly fed into the body of a patient, the two ends of the drawn-out guide wire are connected, the occupied space of the guide wire is reduced, the guide wire is prevented from being thrown, and the safety of medical staff is protected.
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Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a puncture needle kit for clinical puncture and catheterization. Background Art

[0002] During clinical puncture operations such as thoracentesis, abdominal puncture, gastric puncture, and central venous puncture, the puncture process includes the following steps: puncture, introduction of a metal guide wire, needle withdrawal, insertion of a retention catheter along the metal guide wire, and removal of the metal guide wire. After the puncture needle completes the puncture, it is necessary to fix the position of the puncture needle to ensure that it will not shift during subsequent operations. Generally, a medical staff member presses with one hand and pulls the adhesive cloth with the other hand to complete the positioning of its position through the adhesive cloth. However, this method is inconvenient in the clinical operation process and sometimes even requires the cooperation of multiple medical staff members. If the pressing method is incorrect and arterial blood spurts out, it will also cause the patient to lose blood. For doctors who are not very proficient in the operation, accidents such as forgetting to withdraw the guide wire and sending the guide wire into the body when inserting the retention catheter often occur during the above operations, resulting in adverse clinical events. Summary of the Utility Model

[0003] The utility model provides a puncture needle kit for clinical puncture and catheterization. By setting a limiting part, the puncture needle can be stably positioned, the pain brought to the patient by the puncture needle can be reduced, and the success rate and efficiency of the puncture can be improved. By setting a connecting head, the guide wire can be prevented from being accidentally sent into the patient's body, and the two ends of the withdrawn guide wire can be connected, reducing the space occupied by the guide wire, avoiding the guide wire from whipping and bouncing, and protecting the safety of medical staff.

[0004] The above object of the utility model is achieved by the following technical solutions:

[0005] A puncture needle kit for clinical puncture and catheterization includes a puncture needle for puncturing the human body and forming a puncture channel. A limiting part for fixing to the human body is sleeved outside the puncture needle, and the limiting part can slide outside the puncture needle. A guide wire is arranged in the needle tube of the puncture needle and is sent into the human body and remains in the human body as a puncture guiding piece after the puncture needle is withdrawn. A retention catheter is sleeved outside the guide wire and is sent into the human body. One end of the guide wire extending out of the retention catheter is inserted into a connecting part.

[0006] The above-mentioned puncture needle kit for clinical puncture and catheterization, wherein the limiting part includes a support cylinder, a flank, a flexible suction cup and a locking part. The support cylinder is slidably arranged outside the puncture needle. The flank is in a trumpet shape and is fixed at the bottom of the support cylinder. The flexible suction cup is in a trumpet shape and is fixedly connected to the periphery of the flank. The locking part includes a first conical surface arranged circumferentially at the top of the support cylinder. A locking nut is threadedly connected to the upper part of the support cylinder. The inner top of the locking nut is provided with a second conical surface adapted to the first conical surface. A vertical groove extending downward along the axial direction is arranged at the top of the side wall of the support cylinder, and the vertical groove penetrates the side wall of the support cylinder.

[0007] The above-mentioned puncture needle kit for clinical puncture and catheterization, wherein a necking step is arranged below the first conical surface, and an external thread adapted to the locking nut is arranged on the outer wall of the support cylinder below the necking step.

[0008] The above-mentioned puncture needle kit for clinical puncture and catheterization, wherein a plurality of the vertical grooves are uniformly distributed along the circumferential direction of the support cylinder.

[0009] The above-mentioned puncture needle kit for clinical puncture and catheterization, wherein a ring groove is arranged along the circumferential direction at the outer edge of the flexible suction cup. The ring groove is in an inverted V shape, and the outer side edge of the ring groove is lower than the inner side edge of the ring groove.

[0010] The above-mentioned puncture needle kit for clinical puncture and catheterization, wherein a circular ring is arranged along the circumferential direction at the outer end of the flank. The diameter of the circular ring is larger than the thickness of the flank, and the flexible suction cup is fixedly connected to the outside of the circular ring.

[0011] The above-mentioned puncture needle kit for clinical puncture and catheterization, wherein anti-slip lines are arranged along the circumferential direction on the side wall of the locking nut.

[0012] The above-mentioned puncture needle kit for clinical puncture and catheterization, wherein the connecting part includes a strip-shaped connecting part body. Columnar connecting heads are fixedly connected to both ends of the connecting part body, and jacks adapted to the guide wire are arranged at the ends of the connecting heads.

[0013] The above-mentioned puncture needle kit for clinical puncture and catheterization, wherein the connecting part body and the connecting heads are integrally formed, and the connecting part is made of rubber material.

[0014] The above-mentioned puncture needle kit for clinical puncture and catheterization, wherein the puncture needle includes a puncture needle tube and a handheld part which are integrally formed. A needle with a slope angle is arranged at the front end of the puncture needle tube.

[0015] In summary, the beneficial technical effects of the present utility model are as follows: By providing the connecting portion, on the one hand, it can prevent the guide wire from being accidentally sent into the patient's body, and on the other hand, it can connect the two ends of the guide wire, reducing the occupied space of the guide wire, avoiding the whipping of the guide wire, and protecting the safety of medical staff. By providing the limiting portion, it can limit and fix the puncture needle, reduce the pain of the patient, and improve the success rate and efficiency of puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is an exploded view of the limiting portion of the present utility model;

[0018] Figure 3 is a schematic diagram of the usage state of the limiting portion and the puncture needle of the present utility model;

[0019] Figure 4 is a schematic diagram of the usage state of the connecting portion and the guide wire of the present utility model.

[0020] As shown in the figure, 1. Puncture needle; 11. Puncture needle tube; 12. Handheld portion; 2. Limiting portion; 21. Support cylinder; 211. Necking step; 212. External thread; 22. Flank; 221. Ring; 23. Flexible suction cup; 231. Ring groove; 24. Locking portion; 241. First conical surface; 242. Locking nut; 2421. Anti-slip pattern; 243. Second conical surface; 244. Vertical groove; 3. Guide wire; 4. Connecting portion; 41. Connecting portion body; 42. Connecting head; 421. Jack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will further describe the present utility model in detail Figures 1-4 with reference to the accompanying drawings.

[0022] As Figure 1 shown, a puncture needle kit for clinical puncture and catheterization includes a puncture needle 1 for puncturing the human body and forming a puncture channel. The puncture needle 1 includes an integrally formed puncture needle tube 11 and a handheld portion 12. The front end of the puncture needle tube 11 is provided with a needle tip with a slope angle, and the needle tip with a slope angle facilitates the puncture needle tube 11 to puncture into the human body.

[0023] A limiting portion 2 for fixing to the human body is sleeved outside the puncture needle tube 11, and the limiting portion 2 can slide outside the puncture needle tube 11; a guide wire 3 is disposed inside the puncture needle tube 11 and is left in the human body as a puncture guide after the puncture needle 1 is withdrawn. A retention catheter (not shown in the figure) is sleeved outside the guide wire 3, and one end of the guide wire 3 extending out of the retention catheter is inserted into a connecting portion 4.

[0024] As Figure 2As shown in the figure, the limiting part 2 of this embodiment includes a support cylinder 21, a flank 22, a flexible suction cup 23 and a locking part 24. The support cylinder 21 is slidably arranged outside the puncture needle tube 11. The flank 22 is in a horn shape and is fixed to the bottom of the support cylinder 21. The flexible suction cup 23 is in a horn shape and is fixedly connected to the periphery of the flank 22. The locking part 24 includes a first conical surface 241 arranged circumferentially at the top of the support cylinder 21. A locking nut 242 is threadedly connected to the upper part of the support cylinder 21. The inner top of the locking nut 242 is provided with a second conical surface 243 adapted to the first conical surface 241. A vertical groove 244 extending downward along the axial direction is arranged at the top of the side wall of the support cylinder 21, and the vertical groove 244 penetrates the side wall of the support cylinder 21.

[0025] A necking step 211 is arranged below the first conical surface 241, and an external thread 212 adapted to the locking nut 242 is arranged on the outer wall of the support cylinder 21 below the necking step 211.

[0026] After the puncture needle 1 is inserted into the human body to the part that needs drainage, the limiting part 2 can be pushed downward to make the flexible suction cup 23 fit and adsorb to the human skin. Then, the locking nut 242 is rotated to make the second conical surface 243 of the locking nut 242 fit with the first conical surface 241 on the support cylinder 21. As the locking nut 242 is tightened, the extrusion force of the second conical surface 243 on the first conical surface 241 is greater, so that the inner side wall of the first conical surface 241 abuts and squeezes against the outer wall of the puncture needle tube 11, thereby realizing the positioning of the limiting part 2 on the puncture needle tube 11. Through the suction of the flexible suction cup 23 to the human skin and the limitation of the limiting part 2 on the support cylinder 21 on the puncture needle tube 11, the puncture needle 1 is prevented from moving and deviating in the human body, ensuring the accuracy and stability of the puncture position.

[0027] A plurality of vertical grooves 244 are uniformly distributed along the circumferential direction of the support cylinder 21. When the second conical surface 243 of the locking nut 242 squeezes the first conical surface 241, setting a plurality of vertical grooves 244 can ensure the balance of the force exerted on the inner wall of the first conical surface 241 by the puncture needle tube 11 and ensure the stable limitation of the limiting part 2.

[0028] By setting the limiting part 2, the puncture needle 1 can be stably positioned, reducing the pain brought to the patient by the puncture and improving the success rate and efficiency of the puncture.

[0029] Such as Figure 2 、 3 As shown in the figure, a ring groove 231 is arranged along the circumferential direction on the outer edge of the flexible suction cup 23. The ring groove 231 is in an inverted V shape, and the outer side of the ring groove 231 is lower than the inner side of the ring groove 231. This ring groove 231 can suck and fit the human skin to ensure the stability of the puncture needle tube 11.

[0030] The outer end of the flank 22 is circumferentially provided with a circular ring 221. The diameter of the circular ring 221 is greater than the thickness of the flank 22. The flexible suction cup 23 is fixedly connected to the outside of the circular ring 221.

[0031] The support cylinder 21 and the flank 22 can be made of rigid plastic, and the flexible suction cup 23 is made of silica gel. The flexible suction cup 23 and the flank 22 are connected by a hot melt method. Setting the circular ring 221 can improve the firmness of the connection between the flexible suction cup 23 and the flank 22 and prevent the flexible suction cup 23 from detaching from the flank 22. In order to improve the firmness of the connection between the flexible suction cup 23 and the flank 22, a plurality of convex columns perpendicular to the outer wall of the circular ring 221 can also be provided on the outer wall of the circular ring 221.

[0032] The side wall of the locking nut 242 is circumferentially provided with anti-slip threads 2421. Setting the anti-slip threads 2421 facilitates the rotation of the locking nut 242.

[0033] As Figure 1 、 4 shown, the connecting part 4 includes a strip-shaped connecting part body 41. Columnar connecting heads 42 are fixedly connected to both ends of the connecting part body 41. A jack 421 adapted to the guide wire 3 is provided at the end of the connecting head 42. The connecting part body 41 and the connecting head 42 are integrally formed, and the connecting part 4 is made of rubber.

[0034] This kit can be applied to puncture catheterization of the chest cavity, abdominal cavity, deep vein, etc. By setting the connecting part 4, after the retention catheter is sent into the human body along the guide wire 3 of the puncture guide, one end of the guide wire 3 extending out of the retention catheter is inserted into the jack 421 of the connecting head 42. This can play a warning and prompting role to prevent the guide wire 3 from being accidentally sent into the patient's body together with the retention catheter. On the other hand, the guide wire 3 drawn out of the human body can be coiled and the other end of the guide wire 3 can be inserted into the jack 421 of another connecting head 42. By inserting both ends of the coiled guide wire 3 into the two connecting heads 42 of the connecting part 4, the occupied space of the guide wire 3 is reduced, the whipping of the guide wire 3 is avoided, and the safety of medical staff is protected.

[0035] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A puncture needle kit for clinical puncture and catheterization, comprising a puncture needle for puncturing a human body and forming a puncture channel, characterized in that: The outer side of the puncture needle is provided with a limiting portion for fixing to the human body, and the limiting portion can slide on the outer side of the puncture needle; the needle tube of the puncture needle is provided with a guide wire which is sent into the human body and is retained in the human body as a puncture guide after the puncture needle is withdrawn, and the outer sleeve of the guide wire is provided with a retention catheter which is sent into the human body, and one end of the guide wire extending out of the retention catheter is plugged into the connecting portion.

2. The puncture needle kit for clinical puncture and catheterization according to claim 1, characterized in that: The limiting portion includes a support tube, side wings, a flexible suction cup and a locking portion, the support tube is slidably arranged on the outside of the puncture needle, the side wings are trumpet-shaped and fixed to the bottom of the support tube, the flexible suction cup is trumpet-shaped and fixedly connected to the periphery of the side wings, the locking portion includes a first conical surface arranged circumferentially at the top of the support tube, the upper part of the support tube is threadedly connected to a locking nut, the inner top of the locking nut is provided with a second conical surface adapted to the first conical surface, and the top of the side wall of the support tube is provided with a vertical groove extending downward along the axial direction, and the vertical groove passes through the side wall of the support tube.

3. The puncture needle kit for clinical puncture and catheterization according to claim 2, characterized in that: A necking step is provided below the first conical surface, and an outer wall of the support tube below the necking step is provided with an external thread matched with a locking nut.

4. The puncture needle kit for clinical puncture and catheterization according to claim 2, characterized in that: A plurality of vertical grooves are evenly distributed along the circumference of the support tube.

5. The puncture needle kit for clinical puncture and catheterization according to claim 2, characterized in that: An annular groove is provided on the outer edge of the flexible suction cup along the circumferential direction. The annular groove is in an inverted V shape, and the outer side of the annular groove is lower than the inner side of the annular groove.

6. The puncture needle kit for clinical puncture and catheterization according to claim 2, characterized in that: A circular ring is circumferentially arranged at the outer end of the side wing, the diameter of the circular ring is greater than the thickness of the side wing, and the flexible suction cup is fixedly connected to the outer side of the circular ring.

7. The puncture needle kit for clinical puncture and catheterization according to claim 2, characterized in that: The side wall of the locking nut is provided with anti-slip grooves along the circumferential direction.

8. The puncture needle kit for clinical puncture and catheterization according to claim 1, characterized in that: The connecting part comprises a strip-shaped connecting part body, both ends of which are fixedly connected to column-shaped connecting heads, and the end of the connecting head is provided with a socket adapted to the guide wire.

9. The puncture needle kit for clinical puncture and catheterization according to claim 8, characterized in that: The connecting part body and the connecting head are integrally formed, and the connecting part is made of rubber material.

10. The puncture needle kit for clinical puncture and catheterization according to claim 1, characterized in that: The puncture needle comprises an integrally formed puncture needle tube and a hand-held portion, and a needle with a slope angle is arranged at the front end of the puncture needle tube.