CN219022703U

CN219022703U - Injector with self-destruction structure

Info

Publication number: CN219022703U
Application number: CN202222602951.9U
Authority: CN
Inventors: 邹湘君
Original assignee: Jiangsu Yuyang Medical Instrument Co ltd
Current assignee: Jiangsu Yuyang Medical Instrument Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-05-16
Anticipated expiration: 2032-09-30

Abstract

The utility model relates to the technical field of syringes, in particular to a syringe with a self-destruction structure, wherein the lower end of a rubber plug is provided with a placing groove, the inside of the placing groove is provided with a positioning block, the outer wall of the positioning block is provided with a plurality of side grooves, the inside of the side grooves is provided with a spring, one end of the spring is fixed in the side grooves, a fixing effect can be provided between a positioning block and the positioning groove through the mutual matching of a clamping block and an annular groove, the positioning block can not be separated from the positioning groove at the moment, a liquid outlet at the lower end of a needle tube can be blocked by the positioning block at the moment, and the rubber plug can not move in the inside of the needle tube at the moment, so that the self-destruction of the syringe is realized, the structure is prevented from being used for the second time.

Description

Injector with self-destruction structure

Technical Field

The utility model relates to the technical field of syringes, in particular to a syringe with a self-destruction structure.

Background

As is well known, the injection needles commonly used in the medical field, also called syringes, consist essentially of a sheath, a plug and a core rod. The rubber plug is sleeved on the head of the core rod to form the core rod, and the core rod is arranged in the inner cavity of the outer sleeve and is mainly used for extracting or injecting liquid by a needle.

The existing disposable injector generally needs to be destroyed after being used so as to prevent the secondary use of the disposable injector, and most of the existing injector breaks off the push rod after being used so as to achieve the aim of destroying the injector.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides an injector with a self-destruction structure.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a take syringe of self-destruction structure, includes the needle tubing, the lower extreme of needle tubing is equipped with syringe needle and needle cap, the syringe needle is located the inside of needle cap, the needle tubing upper end is equipped with the annular slab that is located the needle tubing week side, the inside of needle tubing is equipped with the plug, the upper end of plug is equipped with the push rod, the upper end of push rod is equipped with presses the board, the lower extreme of plug is equipped with the standing groove, the inside of standing groove is equipped with the locating piece, be equipped with a plurality of side slots on the outer wall of locating piece, the inside of side slot is equipped with the spring, the one end of spring is fixed in the inside of side slot, the other end of spring is equipped with the fixture block, be equipped with the constant head tank that is located the needle tubing bottom on the inner wall of constant head tank, the locating piece is equipped with the ring channel with the constant head tank mutually supporting, fixture block and ring channel mutually support.

In order to prevent the structure from being damaged in the transportation process, the utility model is improved in that a plurality of limiting plates are arranged at the upper end of the annular plate, limiting blocks positioned at the periphery of the pressing plate are arranged on the inner sides of the limiting plates, and limiting grooves matched with the pressing plate are formed in the limiting blocks.

In order to improve the practicality of the structure, the utility model is characterized in that the limiting plate and the limiting block are made of PPS material, the positioning block and the clamping block are made of PP material, and the positioning block is adhered to the inside of the placing groove.

In order to improve the practicability of the clamping block, the utility model is improved in that the clamping block is of a trapezoid structure.

In order to improve the practicability of the positioning block, the utility model is improved in that the bottom end of the positioning block is of a cambered surface structure.

(III) beneficial effects

Compared with the prior art, the utility model provides the injector with the self-destruction structure, which has the following beneficial effects:

this take syringe of self-destruction structure, through the mutually supporting of fixture block and ring channel, can provide a fixed action between locating piece and the constant head tank, the locating piece just can not break away from the constant head tank this moment, the locating piece can block up the liquid outlet of needle tubing lower extreme this moment, and the plug can not remove in the inside of needle tubing this moment, thereby realize the self-destruction of syringe, prevent this structure by secondary use, this structure need not break the push rod when destroying, need not pull out the push rod again just can realize the self-destruction, and is easy to operate, the practicality is high, the required time of syringe destruction has been saved.

Drawings

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

FIG. 2 is a front view of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic view of the internal structure of the needle cannula of FIG. 1 according to the present utility model;

FIG. 4 is a schematic view of a partial enlarged structure of the present utility model at A in FIG. 3;

in the figure: 1. a needle tube; 2. a needle; 3. a needle cap; 4. pressing the plate; 5. a limiting plate; 6. an annular plate; 7. a limiting block; 8. a limit groove; 9. a push rod; 10. a rubber plug; 11. a placement groove; 12. a positioning block; 13. a positioning groove; 14. an annular groove; 15. a side groove; 16. a spring; 17. and (5) clamping blocks.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the injector with self-destruction structure of the present utility model comprises a needle tube 1, wherein the lower end of the needle tube 1 is provided with a needle head 2 and a needle cap 3, the needle head 2 is positioned in the needle cap 3, the upper end of the needle tube 1 is provided with an annular plate 6 positioned at the periphery of the needle tube 1, the inside of the needle tube 1 is provided with a rubber plug 10, the upper end of the rubber plug 10 is provided with a push rod 9, the upper end of the push rod 9 is provided with a pressing plate 4, the lower end of the rubber plug 10 is provided with a placing groove 11, the inside of the placing groove 11 is provided with a positioning block 12, the outer wall of the positioning block 12 is provided with a plurality of side grooves 15, the inside of the side grooves 15 is provided with a spring 16, one end of the spring 16 is fixed in the side groove 15, the other end of the spring 16 is provided with a clamping block 17, the inner wall of the needle tube 1 is provided with a positioning groove 13 positioned at the bottom end of the needle tube 1, the inner wall of the positioning groove 13 is provided with an annular groove 14, the positioning block 12 is matched with the positioning groove 13, the clamping block 17 is matched with the annular groove 14, the pressing plate 4 is pressed, the push rod 9 pushes the rubber plug 10 to move in the needle tube 1, so that the injection process of the structure is realized, the needle head 2 and the needle cap 3 are common parts on the injector, and the common parts are not needed to be described too much, as shown in fig. 3 and 4, when the structure continuously provides a pressure for the pressing plate 4 after the injection is finished, the positioning block 12 enters into the interior of the positioning groove 13, the spring 16 can provide an elastic force for the clamping block 17, the clamping block 17 enters into the interior of the annular groove 14, a fixing effect can be provided between the positioning block 12 and the positioning groove 13 through the mutual matching of the clamping block 17 and the annular groove 14, the positioning block 12 cannot be separated from the positioning groove 13, the rubber plug 10 cannot move in the interior of the needle tube 1, therefore, the self-destruction of the injector is realized, the structure is prevented from being used secondarily, the push rod 9 is not required to be broken off when the injector is destroyed, the self-destruction can be realized without re-pulling out the push rod 9, the operation is simple, the practicability is high, and the time required by destroying the injector is saved.

This structure is when using, if pressing the board 4 carelessly, can make locating piece 12 mistake go into the inside of constant head tank 13, and the syringe just can not reuse this moment, the upper end of annular board 6 is equipped with a plurality of limiting plates 5, the inboard of limiting plate 5 is equipped with the stopper 7 that is located the board 4 week side of pressing, be equipped with on the stopper 7 with pressing board 4 complex spacing groove 8, through stopper 7 and spacing groove 8 that are equipped with, enable this structure under the state of unused, the distance between board 4 and the annular board 6 is fixed, prevent this structure damage at the in-process of transportation, when using, break off limit plate 5 can, simple structure, convenient operation.

Further, limiting plate 5 and stopper 7 are the PPS material, and the PPS plastics have hardness height, characteristics that the friability is good, locating piece 12 and fixture block 17 are the PP material, and the PP plastics has hardness height, advantage that intensity is high, locating piece 12 bonds in the inside of standing groove 11, and the mode of bonding has easy operation, advantage with low costs.

Further, the clamping block 17 is of a trapezoid structure, the lower end of the clamping block 17 of the trapezoid structure is of an inclined plane structure, and the upper end of the clamping block 17 of the trapezoid structure is of a plane structure, so that the clamping block 17 can be smoother when being matched with the annular groove 14.

When the structure is used, the positioning block 12 is not smooth when being matched with the positioning groove 13, the bottom end of the positioning block 12 is of an arc-shaped structure, and the section of the lower end of the positioning block 12 is smaller than the section of the upper end of the positioning block 12, so that the positioning block 12 is smoother when being matched with the positioning groove 13.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take syringe of self-destruction structure, includes needle tubing (1), the lower extreme of needle tubing (1) is equipped with syringe needle (2) and needle cap (3), syringe needle (2) are located the inside of needle cap (3), needle tubing (1) upper end is equipped with annular plate (6) that are located needle tubing (1) week side, the inside of needle tubing (1) is equipped with plug (10), the upper end of plug (10) is equipped with push rod (9), the upper end of push rod (9) is equipped with presses board (4), its characterized in that: the lower extreme of plug (10) is equipped with standing groove (11), the inside of standing groove (11) is equipped with locating piece (12), be equipped with a plurality of side grooves (15) on the outer wall of locating piece (12), the inside of side groove (15) is equipped with spring (16), the one end of spring (16) is fixed in the inside of side groove (15), the other end of spring (16) is equipped with fixture block (17), be equipped with on the inner wall of needle tubing (1) and be located constant head tank (13) of needle tubing (1) bottom, be equipped with ring channel (14) on the inner wall of constant head tank (13), locating piece (12) and constant head tank (13) mutually support, fixture block (17) mutually support with ring channel (14).

2. A syringe with self-destructing structure according to claim 1 and characterized in that: the upper end of annular board (6) is equipped with a plurality of limiting plates (5), the inboard of limiting plate (5) is equipped with stopper (7) that are located according to board (4) week side, be equipped with on stopper (7) with according board (4) complex spacing groove (8).

3. A syringe with self-destructing structure according to claim 2 and characterized in that: the limiting plate (5) and the limiting block (7) are made of PPS materials.

4. A syringe with self-destructing structure according to claim 3 and characterized in that: the positioning blocks (12) and the clamping blocks (17) are made of PP materials.

5. The syringe with self-destroying structure according to claim 4, wherein: the clamping block (17) is of a trapezoid structure.

6. The syringe with self-destructing structure according to claim 5, characterized in that: the positioning block (12) is adhered to the inside of the placing groove (11).

7. The syringe with self-destructing structure according to claim 6, characterized in that: the bottom end of the positioning block (12) is of a cambered surface structure.