CN218009897U

CN218009897U - Disposable straight internal fistula puncture trocar

Info

Publication number: CN218009897U
Application number: CN202221811421.9U
Authority: CN
Inventors: 王艺霏
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-12-13
Anticipated expiration: 2032-07-14

Abstract

The utility model relates to a disposable straight internal fistula puncture trocar belongs to medical appliances technical field, including body, first adapter sleeve and syringe needle, the syringe needle is equipped with the needle cover outward, has seted up the ball hole on the needle cover, and fixedly connected with second adapter sleeve on the needle cover cooperates the use between second adapter sleeve and the first adapter sleeve, and fixedly connected with flexible rubber hose on the needle cover, flexible rubber hose keep away from the one end and the body fixed connection of needle cover, are equipped with fixed subassembly on the body. The utility model discloses ingenious setting up fixed subassembly, through the cooperation between spring in the fixed subassembly and the ball, realized pressing from both sides tightly the needle cover, disposable straight type internal fistula puncture trocar only needs to extract the needle cover before the use and puts into to the round hole in clamp tightly, follow-up dialysis finishes the back and just can be quick covers tight needle cover and prevents the blood outflow.

Description

Disposable straight internal fistula puncture trocar

Technical Field

The utility model belongs to the technical field of medical appliances, specifically, relate to disposable straight type internal fistula puncture trocar.

Background

Hemodialysis is one of the major renal 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.

The internal fistula pjncture needle of original traditional disposable mainly by: the syringe comprises a tube body, a connecting sleeve and a syringe needle. Carry out the preflushing with internal fistula pjncture needle with normal saline earlier before the puncture, then puncture respectively artery, vein and fix, because the syringe needle can have the needle cover before using, its purpose is firstly in order to prevent that the syringe needle from polluting secondly to prevent that the syringe needle from pricking the people before not using, but, doctor or nurse directly throw away after having used up the needle cover for patient can't in time find after the completion of dialysis, cause the blood in the syringe needle to flow from the syringe needle, cause the pollution on ground.

SUMMERY OF THE UTILITY MODEL

For solving among the prior art patient can't in time find the needle cover after the dialysis is accomplished, cause the blood in the syringe needle to follow the technical problem that the syringe needle flows out, the utility model provides a disposable straight type internal fistula puncture trocar.

The purpose of the utility model can be realized by the following technical scheme:

disposable straight internal fistula puncture trocar, including body, first connecting sleeve and syringe needle, its characterized in that: a needle sleeve is arranged outside the needle head, a ball hole is formed in the needle sleeve, a second connecting sleeve is fixedly connected to the needle sleeve, the second connecting sleeve and the first connecting sleeve are matched for use, a rubber hose is fixedly connected to the needle sleeve, one end, far away from the needle sleeve, of the rubber hose is fixedly connected with a tube body, and a fixing assembly is arranged on the tube body;

the fixing assembly comprises a transverse plate, the transverse plate is fixedly connected with the pipe body, a round hole is formed in the transverse plate, two grooves are symmetrically formed in the side wall of the round hole, a spring is fixedly connected to the inner bottom surface of each groove, one end, far away from the bottom surface of each groove, of the spring is fixedly connected with a ball, and the ball is matched with the ball hole.

Furthermore, the first connecting sleeve is in a circular truncated cone shape, one end with a small radius is fixedly connected with the needle head, the other end of the first connecting sleeve is in threaded connection with the tube body, and the needle head and the tube body are connected and disconnected through the first connecting sleeve.

Furthermore, the second connecting sleeve is in a circular truncated cone shape and is movably connected with the first connecting sleeve, so that the needle head is protected by the needle sleeve conveniently through the second connecting sleeve.

Furthermore, the diameter of the round hole is larger than that of the needle sleeve, so that the needle sleeve can be better placed into the round hole.

Furthermore, the ball is made of rubber, so that the rubber ball can reduce damage to the needle sleeve and prevent the needle sleeve from being damaged.

Furthermore, the ball hole is formed in the center of the needle sleeve, so that the needle sleeve can be stably fixed in the ball hole.

The utility model has the advantages that:

the utility model discloses ingenious setting up fixed subassembly, through the cooperation between spring in the fixed subassembly and the ball, realized pressing from both sides tightly the needle cover, disposable straight type internal fistula puncture trocar only needs to extract the needle cover before the use and puts into to the round hole in clamp tightly, follow-up dialysis finishes the back and just can be quick covers tight needle cover and prevents the blood outflow.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a disposable straight internal fistula puncture trocar of the utility model;

FIG. 2 is a schematic view of the tube and the needle of the present invention;

FIG. 3 is a schematic view of the needle sheath structure of the present invention;

fig. 4 is a schematic view of the tangent plane structure of the fixing component of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a pipe body; 2. a first connecting sleeve; 3. a needle head; 4. a needle sleeve; 5. a second connecting sleeve; 6. a rubber hose; 601. a transverse plate; 602. a circular hole; 603. a groove; 604. a spring; 605. a ball; 7. and (4) a ball hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Please refer to fig. 1, fig. 2 and fig. 3, disposable straight internal fistula puncture trocar, including body 1, first connecting sleeve 2 and syringe needle 3, first connecting sleeve 2 is the round platform shape, and the one end and the syringe needle 3 fixed connection that the radius is little, the other end and 1 threaded connection of body, syringe needle 3 is equipped with needle cover 4 outward, ball hole 7 has been seted up on needle cover 4, ball hole 7 sets up the central point that sets up needle cover 4, fixedly connected with second connecting sleeve 5 on needle cover 4, second connecting sleeve 5 is the round platform shape, and with first connecting sleeve 2 between the swing joint, fixedly connected with rubber hose 6 on the needle cover 4, the one end and body 1 fixed connection that rubber hose 6 kept away from needle cover 4, be equipped with fixed subassembly on the body 1.

Referring to fig. 4, the fixing assembly includes a horizontal plate 601, the horizontal plate 601 is fixedly connected to the tube body 1, a circular hole 602 is formed in the horizontal plate 601, the diameter of the circular hole 602 is larger than that of the needle sleeve 4, two grooves 603 are symmetrically formed in the side wall of the circular hole 602, a spring 604 is fixedly connected to the inner bottom surface of the groove 603, a ball 605 is fixedly connected to one end of the spring 604 far from the bottom surface of the groove 603, the ball 605 is made of rubber, and the ball 605 and the ball hole 7 are used in cooperation.

The working principle is as follows:

the utility model discloses a disposable straight type internal fistula puncture trocar is when using, with

needle cover

4 and 3 separations of syringe needle, insert needle cover 4 one end to the round hole 602 of diaphragm 601 in, needle cover 4 is at the in-process that removes, can extrude ball 605, and ball 605 then can extrude spring 604, when ball 605 corresponds with ball hole 7 on the needle cover 4, the realization is fixed to needle cover 4, later dialyse the operation again, after the dialysis, take off needle cover 4 from diaphragm 601 and entangle syringe needle 3, prevent the outflow of blood in the syringe needle 3.

In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely exemplary and illustrative of the structure of the invention and various modifications, additions or substitutions as are known to those skilled in the art may be made to the described embodiments without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. Disposable straight internal fistula puncture trocar, including body (1), first connecting sleeve (2) and syringe needle (3), its characterized in that: a needle sleeve (4) is arranged outside the needle head (3), a ball hole (7) is formed in the needle sleeve (4), a second connecting sleeve (5) is fixedly connected to the needle sleeve (4), the second connecting sleeve (5) and the first connecting sleeve (2) are matched for use, a rubber hose (6) is fixedly connected to the needle sleeve (4), one end, far away from the needle sleeve (4), of the rubber hose (6) is fixedly connected with the tube body (1), and a fixing component is arranged on the tube body (1);

fixed subassembly includes diaphragm (601), and diaphragm (601) and body (1) fixed connection have seted up round hole (602) on diaphragm (601), and two recesses (603) have been seted up to the symmetry on the lateral wall of round hole (602), and the interior bottom surface fixedly connected with spring (604) of recess (603), one end fixedly connected with ball (605) of recess bottom surface are kept away from in spring (604), and ball (605) and ball hole (7) cooperation are used.

2. The disposable straight internal fistula puncture trocar of claim 1, wherein: the first connecting sleeve (2) is in a circular truncated cone shape, one end with a small radius is fixedly connected with the needle head (3), and the other end is in threaded connection with the pipe body (1).

3. The disposable straight internal fistula puncture trocar of claim 1, wherein: the second connecting sleeve (5) is in a circular truncated cone shape and is movably connected with the first connecting sleeve (2).

4. The disposable straight internal fistula puncture trocar of claim 1, wherein: the diameter of the round hole (602) is larger than that of the needle sleeve (4).

5. The disposable straight internal fistula puncturing trocar according to claim 1, wherein: the material of the round ball (605) is rubber.

6. The disposable straight internal fistula puncture trocar of claim 1, wherein: the ball hole (7) is arranged at the center of the needle sleeve (4).