CN218685484U

CN218685484U - Dialysis temporary catheter puncture probe

Info

Publication number: CN218685484U
Application number: CN202221883023.8U
Authority: CN
Inventors: 朱晔; 赵鸿雯; 裴雪峰; 李佩球
Original assignee: Fifth Affiliated Hospital of Sun Yat Sen University
Current assignee: Fifth Affiliated Hospital of Sun Yat Sen University
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2023-03-24
Anticipated expiration: 2032-07-21

Abstract

The utility model discloses a dialysis temporary catheter puncture probe, which comprises a needle tube and a guide wire pipeline, wherein the needle tube and the guide wire pipeline are hollow pipelines; the guide wire pipeline is obliquely connected to the side wall of the needle tube; the guide wire pipeline is communicated with the needle tube; the tail end of the needle tube is internally provided with a first elastic sheet; the tail end of the guide wire pipeline is internally provided with a second elastic sheet. The utility model aims to overcome the defects of the prior art and provide a puncture probe for a temporary catheter for dialysis, wherein a guide wire pipeline is added on a needle tube to reduce the operation time; the first shrapnel is added at the tail end of the needle tube, so that the probability of massive blood loss of a patient is reduced, and the possibility of infection of the patient is also reduced.

Description

Dialysis temporary catheter puncture probe

Technical Field

The utility model relates to the technical field of medical equipment, more specifically say, relate to a dialysis temporary catheter puncture probe.

Background

Hemodialysis is one of the kidney replacement therapies for patients with renal failure. When hemodialysis is performed, a doctor firstly establishes a blood vessel access of a patient, then connects a pre-filled dialyzer and a disposable blood vessel to the blood vessel access of the patient, establishes extracorporeal circulation and starts hemodialysis treatment. During hemodialysis, a puncture needle is necessary for establishing a temporary blood path in connection with the blood circuit. However, the conventional puncture needle has the following drawbacks: in the operation process, the head of the patient needs to be braked, and the long-time operation prolongs the pain enduring time of the patient; after a series of procedures, the patient is prone to lose a significant amount of blood, and the repeated manipulation of the exposed probe port, the non-occlusive device, and the operator increases the chance of infection for the patient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a puncture probe for a temporary catheter for dialysis, wherein a guide wire pipeline is added on a needle tube to reduce the operation time; the first shrapnel is added at the tail end of the needle tube, so that the probability of massive blood loss of a patient is reduced, and the possibility of infection of the patient is also reduced.

The purpose of the utility model can be realized by the following technical scheme: a dialysis temporary catheter puncture probe comprises a needle tube and a guide wire pipeline, wherein the needle tube and the guide wire pipeline are hollow; the guide wire pipeline is obliquely connected to the side wall of the needle tube; the guide wire pipeline is communicated with the needle tube; the tail end of the needle tube is internally provided with a first elastic sheet; the tail end of the guide wire pipeline is internally provided with a second elastic sheet.

After the structure is adopted, a guide wire pipeline is added for inserting a guide wire, a small part of the guide wire can be inserted into the guide wire pipeline in advance before the puncture probe is inserted, and after the puncture probe is successfully confirmed, the guide wire is directly and completely fed, so that the intubation time is reduced, and the pain of a patient suffering from head braking for a long time is relieved; the first elastic sheet and the second elastic sheet are added, so that bleeding and gushing of a wound can be avoided, a large amount of blood loss is caused, and repeated exposure of the wound can be avoided, so that the wound is infected.

Furthermore, the first elastic sheet and the second elastic sheet are made of rubber.

After the structure is adopted, the first elastic sheet and the second elastic sheet can be opened only under the intervention of external force, and the relative sealing of the device is ensured.

Furthermore, a plurality of resistance increasing points are symmetrically arranged in the guide wire pipeline.

After the structure is adopted, a conical hollow needle for guiding the guide wire can be clamped, and the guide wire is fixed in the guide wire pipeline through the matching of the conical needle and the resistance increasing point.

Further, the needle tube further comprises a needle handle disposed outside the distal end of the needle tube.

After adopting this kind of structure, the thicker needle handle is convenient for the operator to puncture and hold the puncture probe.

Furthermore, an external thread is arranged below the needle handle.

After the structure is adopted, the spiral-line injector can be conveniently matched with the clinical existing spiral-line injector for use.

Further, the outer wall of the needle handle is arc-shaped.

After adopting this kind of structure, curved needle handle outer wall more agrees with operator's finger, can hold better and hold.

Further, the guide wire pipeline and the needle tube are integrally arranged.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the first elastic sheet is additionally arranged at the tail end of the needle tube, so that the risk of massive blood gushing of a patient is reduced; and the repeated exposure of the wound when the dialysis temporary catheter is inserted into the wound is also avoided, so that the wound infection is further avoided.

2. By adding a guide wire pipeline on the needle tube for inserting the guide wire, the intubation time can be reduced, and the pain of a patient suffering from head braking for a long time can be relieved.

3. Through the Y-shaped structure formed by the guide wire pipeline and the needle tube and the arc-shaped appearance design of the needle handle, an operator can conveniently puncture and hold the puncture probe.

Drawings

FIG. 1 is an external view of a temporary catheter puncture probe for dialysis in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a dialysis temporary catheter puncture probe in an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of a needle cannula according to an embodiment of the present invention;

fig. 4 is a partial cross-sectional view of a guidewire tube in an embodiment of the invention.

Wherein: 1: needle tube, 2: guide wire duct, 3: first shell fragment, 4: needle handle, 5: second shell fragment, 6: resistance increasing points.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

A dialysis temporary catheter puncture probe comprises a needle tube 1 and a guide wire pipeline 2.

As shown in fig. 2 and 3, the needle tube 1 is a hollow steel needle, and the needle tube 1 includes a first elastic sheet 3 and a needle handle 4. The tail end of the needle tube 1 is arranged in the first elastic sheet 3 made of rubber materials, the outer edge of the first elastic sheet 3 is abutted to the inner wall of the needle tube 1, one end point of the outer edge is fixedly arranged on the inner wall of the needle tube 1, and the outer diameter of the first elastic sheet 3 is matched with the inner diameter of the needle tube 1. First shell fragment 3 remains throughout to contradict the laminating with the inner wall of needle tubing 1 under the non-atress state, and first shell fragment 3 is backed up when the syringe inserts, and first shell fragment 3 kick-backs under self elastic action after the syringe withdraws from, laminates with the inner wall of needle tubing 1, has guaranteed the relative closure of device, and then avoids the wound to expose repeatedly under a series of operations. The needle handle 4 is arranged at the outer side of the tail end of the needle tube 1, the outer wall of the needle handle is arc-shaped, and the fingers of an operator can be matched with the needle handle 4 through the arc-shaped design, so that the needle can be conveniently held by hands. The external thread is arranged below the needle handle 4, and can be matched with the clinical existing spiral injector for use.

As shown in fig. 2 and 4, the guide wire conduit 2 is a hollow conduit, the guide wire conduit 2 is obliquely connected to the sidewall of the needle tube 1 and is integrally disposed with the needle tube 1, and the guide wire conduit 2 is communicated with the needle tube 1. The guide wire duct 2 is a channel for inserting a guide wire, and the inner diameter of the guide wire duct is adapted to the maximum diameter of the nipple of a conical hollow needle used for venipuncture, and the guide wire can be guided to the guide wire duct 2 by the conical hollow needle. The guide wire pipeline 2 comprises a second elastic sheet 5 and a resistance increasing point 6. The second elastic sheet 5 made of rubber materials is arranged at the tail end of the guide wire pipeline 2, the outer edge of the second elastic sheet 5 is abutted to the tail end opening of the guide wire pipeline 2, one end point of the outer edge is fixedly arranged at the tail end opening of the guide wire pipeline 2, and the outer diameter of the second elastic sheet 5 is matched with the inner diameter of the tail end opening of the guide wire pipeline 2. Second shell fragment 5 remains throughout to contradict the laminating with the opening of seal wire pipeline 2 under the non-stress state, and second shell fragment 5 is backed up when the hollow needle of toper is inserted, and the hollow needle of toper withdraws from back second shell fragment 5 kick-backs under self elastic action, laminates with the terminal opening of seal wire pipeline 2, has guaranteed the relative seal of device, and then avoids the wound to expose repeatedly under a series of operations. Above the second elastic sheet 5, the inner wall of the guide wire pipeline 2 is symmetrically provided with two resistance increasing points 6, and the distance between the two resistance increasing points 6 is smaller than the maximum diameter of the conical hollow needle nipple. The resistance increasing point 6 is used for clamping the inserted conical hollow needle and fixing the conical hollow needle in the guide wire pipeline 2, so that the situation that the conical hollow needle is unstable in the guide wire placing process, the position of a needle point in a blood vessel is changed, and the guide wire feeding position deviates is avoided; before the puncture probe is inserted, a small part of guide wire can be inserted into the guide wire pipeline 2 through the conical hollow needle in advance and fixed in the guide wire pipeline 2, and after the puncture positioning is confirmed to be successful, the guide wire is directly and completely fed through the guide wire pipeline 2, so that the intubation time is reduced, and the pain of a patient suffering from head braking for a long time is relieved.

The use principle of the dialysis temporary catheter puncture probe comprises the following steps: when the puncture probe is not used, the first elastic sheet 3 and the second elastic sheet 5 are in a natural closed state. When the puncture probe is used for puncture, the first elastic sheet 3 is pushed open by the injector and inserted into the needle tube 1, and the external thread of the needle tube 1 is screwed with the injector. When the injector is not needed, the injector is screwed out of the needle tube 1, and the first elastic sheet 3 is restored to a natural closing state. When the guide wire needs to be placed, a small part of the guide wire penetrates into the conical hollow needle, then the conical hollow needle jacks the second elastic sheet 5 to be inserted into the guide wire pipeline 2, and the guide wire is guided to the guide wire pipeline 2. The nipple of the conical hollow needle is clamped at the tail end of the guide wire pipeline 2 through the two resistance increasing points 6, the guide wire is fixed in the guide wire pipeline 2 in advance, and after the puncture positioning is confirmed to be successful, the guide wire is directly and completely fed through the guide wire pipeline 2.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A dialysis temporary catheter puncture probe, characterized in that: the needle tube comprises a needle tube (1) and a guide wire pipeline (2), wherein the needle tube (1) and the guide wire pipeline (2) are hollow pipelines; the guide wire pipeline (2) is obliquely connected to the side wall of the needle tube (1); the guide wire pipeline (2) is communicated with the needle tube (1);

a first elastic sheet (3) is arranged in the tail end of the needle tube (1);

a second elastic sheet (5) is arranged in the tail end of the guide wire pipeline (2).

2. A dialysis temporary catheter puncture probe according to claim 1, characterized in that: the first elastic sheet (3) and the second elastic sheet (5) are made of rubber.

3. A dialysis temporary catheter puncture probe according to claim 1, characterized in that: a plurality of resistance increasing points (6) are symmetrically arranged in the guide wire pipeline (2).

4. A dialysis temporary catheter puncture probe according to claim 1, characterized in that: the needle tube (1) further comprises a needle handle (4), and the needle handle (4) is arranged on the outer side of the tail end of the needle tube (1).

5. A dialysis temporary catheter puncture probe according to claim 4, characterized in that: an external thread is arranged below the needle handle (4).

6. A dialysis temporary catheter puncture probe according to claim 4, characterized in that: the outer wall of the needle handle (4) is arc-shaped.

7. A dialysis temporary catheter puncture probe according to claim 1, characterized in that: the guide wire pipeline (2) and the needle tube (1) are integrally arranged.