Novel internal arteriovenous fistula puncture trocar device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a novel arteriovenous fistula puncture trocar device which comprises a puncture needle, a movable buckle is arranged on one side of the surface of the puncture needle, a flexible vacuum envelope is arranged on the outer surface of the puncture needle, and a vein port is formed in one end of the flexible vacuum envelope. According to the novel internal arteriovenous fistula puncture trocar device, by arranging the puncture needle, the vein port and the artery port, when the novel internal arteriovenous fistula puncture trocar device is used, a doctor establishes an internal arteriovenous fistula on an arm of a patient in advance, and after the internal arteriovenous fistula is mature, internal arteriovenous fistula puncture can be performed; by means of the puncture trocar, artery and vein end pipelines can reach the telecentric end (artery end) and the proximal end (vein end) respectively through one-time puncture, the hemodialysis recycling proportion is reduced for hemodialysis patients with few puncture blood vessel resources, and the effect of improving the use convenience of the device is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a new type of arteriovenous fistula puncture trocar device. BACKGROUND

[0002] The morbidity of chronic renal failure population is about 10%, and finally develops into uremia, and only a few can successfully perform kidney transplantation, and most patients rely on maintenance dialysis to maintain life, and vascular access is the lifeline of chronic renal failure patients with maintenance dialysis, and arteriovenous fistula is anastomosed with the artery and vein of the patient, and after the maturation of the fistula, dialysis is carried out by puncture, which is the most ideal vascular access, so a arteriovenous fistula puncture trocar device is needed.

[0003] However, the existing arteriovenous fistula puncture trocar device has the following shortcomings:

[0004] (1) The existing arteriovenous fistula puncture trocar device has weak device use convenience function, because the traditional puncture trocar device needs to be punctured repeatedly during the puncture process, which causes the patient to feel uncomfortable and increases the workload of medical staff;

[0005] (2) The existing arteriovenous fistula puncture trocar device has weak device use safety function, because during hemodialysis, if blood backflow occurs into the patient's body, it will affect the patient's health, delay the normal hemodialysis progress and reduce the hemodialysis efficiency. INVENTION CONTENTS

[0006] The utility model aims at providing a new type of arteriovenous fistula puncture trocar device to solve the problems in the background art.

[0007] To achieve the above object, the utility model provides the following technical scheme: a new type of arteriovenous fistula puncture trocar device, comprising a puncture needle, the surface of the puncture needle is provided with a movable buckle, the outer surface of the puncture needle is provided with a flexible vacuum bag film, one end of the flexible vacuum bag film is provided with a vein port, and one end of the puncture needle is provided with an artery port.

[0008] Optionally, the puncture needle is fixedly connected with a needle head at the end away from the artery port, a puncture port is formed at one end of the needle head, the puncture needle is conveniently punctured quickly through the arrangement of the needle head, the discomfort of the patient is reduced, and the blood is controlled during hemodialysis through the arrangement of the puncture port.

[0009] Optionally, a catheter is arranged on the inner side wall of the puncture needle, and a side hole is formed in the outer surface of the catheter, the blood is transported into the patient's body from the side hole after puncture through the cooperation of the catheter and the side hole.

[0010] Optionally, one side of the surface of the puncture needle is fixedly connected with a connecting ring, and the outer surface of the connecting ring is fixedly connected with a wing plate, the wing plate is supported and fixed through the connecting ring, medical staff can hold the wing plate, and puncture can be more convenient and fast.

[0011] Optionally, the puncture needle is made of polytetrafluoroethylene, polytetrafluoroethylene is a material with excellent biocompatibility and flexibility, can form a stable and harmless channel in the blood vessel, and can reduce damage to the blood vessel wall.

[0012] Optionally, the catheter is made of polyvinyl chloride, polyvinyl chloride has good biocompatibility, can avoid causing immune response or inflammatory response, and has certain flexibility, so as to move flexibly in the blood vessel.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The novel arteriovenous fistula puncture trocar device is provided with a puncture needle, a vein port and an artery port, a doctor can pre-establish an arteriovenous fistula on the arm of a patient, and can perform arteriovenous fistula puncture after maturation, the puncture trocar can make the artery vein end pipe reach the distal end (artery end) and the proximal end (vein end) respectively through one-time puncture, and the blood dialysis recirculation ratio of patients with less puncture blood vessels is reduced, so that the use convenience of the device is improved.

[0015] 2. The novel arteriovenous fistula puncture trocar device is provided with a flexible vacuum bag film and a movable buckle, the flexible vacuum bag film can keep the vein telescopic end in a sterile state, the movable buckle can open and close the side of the device connected with the flexible vacuum bag film, blood cannot flow back from the flexible vacuum bag film, the use safety of the device is improved, and the blood backflow into the patient's body during blood dialysis can be avoided, the patient's health is not affected, normal blood dialysis progress is not delayed, and blood dialysis efficiency is not reduced. DETAILED DESCRIPTION

[0016] Figure 1 It is a three-dimensional appearance schematic view of the utility model;

[0017] Figure 2 It is a puncture before device internal structure side view schematic view of the utility model;

[0018] Figure 3 It is a puncture after device internal structure side view schematic view of the utility model;

[0019] Figure 4 It is a Figure 3 It is an enlarged schematic view of A in the utility model.

[0020] Figure: 1, puncture needle; 2, active buckle; 3, flexible vacuum bag film; 4, venous port; 5, arterial port; 6, needle; 7, puncture port; 8, catheter; 9, side hole; 10, adapter ring; 11, wing. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a kind of new arteriovenous fistula puncture trocar device, the surface side of puncture needle 1 is provided with active buckle 2, the outer surface of puncture needle 1 is provided with flexible vacuum bag film 3, and the one end of flexible vacuum bag film 3 is provided with venous port 4, and the one end of puncture needle 1 is provided with arterial port 5, doctor pre-establishes arteriovenous fistula on patient's arm, after internal maturation, arteriovenous fistula puncture can be moved, this puncture trocar can make that arterial venous end pipe reaches far end (arterial end) and near end (venous end) respectively by once puncture, for those puncture blood vessel resources less hemodialysis patients, reduce hemodialysis recirculation ratio, flexible vacuum bag film 3 can make that venous telescopic end keeps sterile state, the setting of active buckle 2 can open and close the side of device connection flexible vacuum bag film 3, so that blood does not reflux from flexible vacuum bag film 3;

[0023] The one end of puncture needle 1 away from arterial port 5 is fixedly connected with needle 6, and the one end of needle 6 is provided with puncture port 7, and the setting of needle 6 facilitates puncture needle 1 to puncture quickly, reduces patient's discomfort, and the setting of puncture port 7 can control blood during hemodialysis;

[0024] The inner side wall of puncture needle 1 is provided with catheter 8, and the outer surface of catheter 8 is provided with side hole 9, and the cooperation of catheter 8 and side hole 9 is used, after puncture, blood is transported to patient's body from side hole 9;

[0025] The surface side of puncture needle 1 is fixedly connected with adapter ring 10, and the outer surface of adapter ring 10 is fixedly connected with wing 11, and the setting of adapter ring 10 supports and fixes wing 11, and medical staff can hold wing 11, which can be more convenient and fast puncture;

[0026] The puncture needle 1 is made of polytetrafluoroethylene, which is a material with excellent biocompatibility and flexibility, can form a stable and harmless channel inside the blood vessel, and can reduce damage to the blood vessel wall.

[0027] The catheter 8 is made of polyvinyl chloride, which has good biocompatibility, can avoid causing immune response or inflammatory response, and has certain flexibility to move flexibly in the blood vessel.

[0028] In the utility model, the working steps of the device are as follows:

[0029] The first step: the doctor pre-establishes the internal arteriovenous fistula on the patient's arm, and after the internal maturity, the internal arteriovenous fistula puncture can be realized, the puncture sleeve needle can make the arterial and venous end pipeline reach the distal end (arterial end) and the proximal end (venous end) respectively, and the flexible vacuum bag film 3 can keep the venous telescopic end in a sterile state, and the movable buckle 2 can be opened and closed on one side of the device connected with the flexible vacuum bag film 3, so that the blood does not flow back from the flexible vacuum bag film 3.

[0030] The second step: the needle 6 is arranged to facilitate the puncture of the puncture needle 1, reduce the discomfort of the patient, the puncture port 7 is arranged to control the blood during hemodialysis, and the catheter 8 and the side hole 9 are used in cooperation, so that the blood is transported to the patient's body from the side hole 9 after puncture, and the connecting ring 10 is arranged to support and fix the wing piece 11, so that the medical staff can hold the wing piece 11, and the puncture can be more convenient and fast.

[0031] The third step: polytetrafluoroethylene is a material with excellent biocompatibility and flexibility, which can form a stable and harmless channel inside the blood vessel, and can reduce damage to the blood vessel wall, polyvinyl chloride has good biocompatibility, can avoid causing immune response or inflammatory response, and has certain flexibility to move flexibly in the blood vessel, the arterial port 5 is used for connecting the artery, and the catheter 8 is used for connecting the vein and is a threaded interface.

[0032] The basic principle, main features and advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A new type of internal arteriovenous fistula puncture trocar device, comprising a puncture needle (1), characterized in that: The surface side of the puncture needle (1) is provided with a movable buckle (2), the outer surface of the puncture needle (1) is provided with a flexible vacuum bag film (3), one end of the flexible vacuum bag film (3) is provided with a venous port (4), and one end of the puncture needle (1) is provided with an arterial port (5).

2. A novel internal arteriovenous fistula puncture trocar device according to claim 1, characterized in that: The puncture needle (1) is fixedly connected with a needle head (6) away from the arterial port (5), and one end of the needle head (6) is provided with a puncture port (7).

3. The novel internal arteriovenous fistula puncture trocar device according to claim 1, characterized in that: The inner side wall of the puncture needle (1) is provided with a catheter (8), and the outer surface of the catheter (8) is provided with a side hole (9).

4. The novel internal arteriovenous fistula puncture trocar device according to claim 1, characterized in that: The surface side of the puncture needle (1) is fixedly connected with a connecting ring (10), and the outer surface of the connecting ring (10) is fixedly connected with a wing (11).

5. The novel internal arteriovenous fistula puncture trocar device according to claim 1, characterized in that: The puncture needle (1) is made of polytetrafluoroethylene.

6. The novel internal jugular vein fistula needle set device according to claim 3, characterized in that: The catheter (8) is made of polyvinyl chloride.

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