CN219208465U

CN219208465U - Injection needle capable of automatically recovering needle

Info

Publication number: CN219208465U
Application number: CN202221998983.9U
Authority: CN
Inventors: 陈臣; 吴伟; 陈祺栋; 肖阳
Original assignee: Suzhou Rococo Creative Industry Co ltd
Current assignee: Suzhou Rococo Creative Industry Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2023-06-20
Anticipated expiration: 2032-08-01

Abstract

The utility model discloses an injection needle capable of automatically recovering a needle head, which comprises a needle cylinder and an inner cylinder, wherein a needle seat is arranged at one end of the needle cylinder, the inner cylinder is inserted into the needle cylinder, a piston is arranged at one end of the inner cylinder, a pull rod is arranged in the inner cylinder, a spring is sleeved on the pull rod, and a push rod is arranged on the pull rod; the needle seat is provided with a buckle matched with one end of the pull rod. After the injection of the utility model is finished, the push rod of the injection needle is pressed down, the head of the push rod is clamped into the needle seat by the pull rod, when the push rod is released, the push rod is triggered to deflect and turn to the position of the sliding groove, and the spring pushes the push rod inwards to be pulled into the inner side of the needle cylinder together with the needle seat.

Description

Injection needle capable of automatically recovering needle

Technical Field

The utility model relates to the technical field of injection needles, in particular to an injection needle capable of automatically recycling a needle head.

Background

The general syringe consists of a hollow outer barrel and a push rod. Wherein one end of the outer cylinder can be combined with the injection needle, and the inner part of the outer cylinder can be used for accommodating liquid medicine. One end of the push rod is provided with a piston part which is inserted into the inner cavity of the outer cylinder, and the other end of the push rod is exposed out of the outer cylinder. By pushing the push rod in this way, the liquid medicine can be pushed out of the needle head arranged on one end of the outer cylinder by the piston part.

The existing injection needle does not have the function of automatically recovering the needle, after the injection needle is used, medical staff needs to pull out the needle manually and then throw the needle into a corresponding dustbin, so that great inconvenience is brought to the medical staff.

Disclosure of Invention

The utility model aims to provide an injection needle capable of automatically recovering a needle head, so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the injection needle capable of automatically recovering the needle head comprises a needle cylinder and an inner cylinder, wherein a needle seat is arranged at one end of the needle cylinder, the inner cylinder is inserted into the needle cylinder, a piston is arranged at one end of the inner cylinder, a pull rod is arranged in the inner cylinder, a spring is sleeved on the pull rod, and a push rod is arranged on the pull rod; the needle seat is provided with a buckle matched with one end of the pull rod.

Preferably, a sealing cover is arranged at one end of the inner cylinder far away from the needle cylinder, and a through hole for the push rod to penetrate is formed in the sealing cover.

Preferably, the cross section of the pull rod at one end of the needle seat is inverted T-shaped.

Preferably, the pull rod is provided with a sawtooth structure at one end of the push rod, and an inclined surface structure matched with the sawtooth structure is arranged at one end of the push rod.

Compared with the prior art, the utility model has the beneficial effects that: after the injection is finished, the push rod of the injection needle is pressed down, the head of the injection needle is clamped into the needle seat by the pull rod, when the push rod is released, the pull rod is triggered to deflect and turn to the position of the sliding groove, and the spring pushes the pull rod inwards to be pulled into the inner side of the needle cylinder together with the needle seat.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a cross-sectional view at A-A of the present utility model;

fig. 4 is a schematic view of the structure of the needle holder of the present utility model;

FIG. 5 is a schematic view of the structure of the tie rod and push rod of the present utility model;

FIG. 6 is a schematic view of the structure of the tie rod of the present utility model;

fig. 7 is a schematic view of the structure of the push rod of the present utility model.

In the figure: 1. a needle stand; 2. a needle cylinder; 3. an inner cylinder; 4. a cover; 5. a push rod; 6. a pull rod; 7. a spring; 8. a piston; 11. a buckle; 51. an inclined plane structure; 61. saw tooth structure.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Referring to fig. 1-7, in an embodiment of the present utility model, an injection needle capable of automatically recovering a needle head includes a needle cylinder 2 and an inner cylinder 3, wherein a needle seat 1 is installed at one end of the needle cylinder 2, the inner cylinder 3 is inserted into the needle cylinder 2, a piston 8 is installed at one end of the inner cylinder 3 located in the needle cylinder 2, a pull rod 6 is disposed in the inner cylinder 3, a spring 7 is sleeved on the pull rod 6, and a push rod 5 is installed on the pull rod 6; the needle seat 1 is provided with a buckle 11 matched with one end of the pull rod 6; a sealing cover 4 is arranged at one end of the inner cylinder 3 far away from the needle cylinder 2, and a through hole for a push rod 5 to penetrate is formed in the sealing cover 4; the section of the pull rod 6 at one end of the needle seat 1 is inverted T-shaped; the pull rod 6 is provided with a sawtooth structure 61 at one end of the push rod 5, and an inclined surface structure 51 matched with the sawtooth structure 61 is arranged at one end of the push rod 5; after the injection is finished, the injection needle push rod 5 is pressed down, the head of the push rod 6 is clamped into the needle seat 1, when the push rod 5 is loosened, the push rod 6 is triggered to deflect and turn to the position of the sliding groove, and the spring 7 pushes the push rod 6 inwards to be pulled into the inner side of the needle cylinder 2 together with the needle seat 1.

The working principle of the utility model is as follows: after the injection is finished, the injection needle push rod 5 is pressed down, the head of the push rod 6 is clamped into the needle seat 1, when the push rod 5 is loosened, the push rod 6 is triggered to deflect and turn to the position of the sliding groove, and the spring 7 pushes the push rod 6 inwards to be pulled into the inner side of the needle cylinder 2 together with the needle seat 1.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an injection needle that can retrieve syringe needle automatically, includes cylinder (2) and inner tube (3), its characterized in that: a needle seat (1) is arranged at one end of the needle cylinder (2), an inner cylinder (3) is inserted into the needle cylinder (2), a piston (8) is arranged at one end of the inner cylinder (3) positioned at the needle cylinder (2), a pull rod (6) is arranged in the inner cylinder (3), a spring (7) is sleeved on the pull rod (6), and a push rod (5) is arranged on the pull rod (6); the needle seat (1) is provided with a buckle (11) matched with one end of the pull rod (6).

2. An automatically retractable needle injection needle according to claim 1, wherein: one end of the inner cylinder (3) far away from the needle cylinder (2) is provided with a sealing cover (4), and the sealing cover (4) is provided with a through hole for the push rod (5) to penetrate.

3. An automatically retractable needle injection needle according to claim 1, wherein: the section of the pull rod (6) at one end of the needle seat (1) is in an inverted T shape.

4. An automatically retractable needle injection needle according to claim 1, wherein: the pull rod (6) is located at one end of the push rod (5) and is provided with a sawtooth structure (61), and one end of the push rod (5) is provided with an inclined surface structure (51) matched with the sawtooth structure (61).