CN216985940U

CN216985940U - Interpolation type self-destruction disposable syringe

Info

Publication number: CN216985940U
Application number: CN202122661167.0U
Authority: CN
Inventors: 刘贞宽; 孙永; 刘压印; 马红旗
Original assignee: Shandong Chengwu Sainuo Medical Instruction Co ltd
Current assignee: Shandong Chengwu Sainuo Medical Instruction Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-07-19
Anticipated expiration: 2031-11-02

Abstract

The utility model belongs to the technical field of injectors, and discloses an interpolation type self-destruction disposable injector which comprises a needle cylinder, wherein a liquid outlet nozzle is integrally formed at the end part of the needle cylinder, a piston is arranged in the needle cylinder, one end of the piston, which is far away from the liquid outlet nozzle, is connected with a push rod, a circular liquid outlet channel is axially arranged on the liquid outlet nozzle, an embedded groove is formed in the inner surface wall of the liquid outlet channel, a convex column matched with the liquid outlet channel is fixed at one end, which faces the liquid outlet nozzle, of the piston, and grooves are formed in the upper end and the lower end of the convex column. The push rod can not be pulled out, thereby being incapable of being recycled for secondary use.

Description

Interpolation type self-destruction disposable syringe

Technical Field

The utility model belongs to the technical field of syringes, and particularly relates to an interpolation type self-destruction disposable syringe.

Background

The syringe is a common medical appliance, mainly uses a needle to extract or inject gas or liquid, wherein, the disposable syringe is one of a plurality of syringes, the disposable syringe product comprises a jacket, a core bar, a rubber plug, a conical head, a press handle, a conical head and the like, and the application range of the product is matched with the disposable syringe needle to be used for hypodermic, intramuscular and intravenous injection of liquid medicine, blood extraction or medicine dissolution.

The disposable syringes that use and sell at present in a large number have certain defect, and traditional disposable syringe does not possess portable self-destruction function, is easily illegally retrieved by lawbreakers, and follow-up selling is used repeatedly again, has very big potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The present invention aims to provide an insertion type self-destruction disposable syringe to solve the problem that the conventional disposable syringe in the background art is easy to be illegally recycled and reused by lawbreakers because the conventional disposable syringe does not have a portable self-destruction function.

In order to achieve the purpose, the utility model provides the following technical scheme: an interpolation type self-destruction disposable syringe comprises a needle cylinder, a liquid outlet nozzle is integrally formed at the end of the needle cylinder, a piston is arranged inside the needle cylinder, one end, far away from the liquid outlet nozzle, of the piston is connected with a push rod, a circular liquid outlet channel is axially formed in the liquid outlet nozzle, an embedded groove is formed in the inner surface wall of the liquid outlet channel, a protruding column matched with the liquid outlet channel is fixed at one end, facing the liquid outlet nozzle, of the piston, a groove is formed in the upper end and the lower end of the protruding column, an embedded block is hinged to the upper end of the inside of the groove, the bottom end of the embedded block is connected with one side, far away from the hinged end, of the embedded block, and one end, far away from the embedded block, of the pressure spring is connected with the bottom of the inside of the groove.

Preferably, the two side walls of the convex column are integrally formed into a plane, the liquid guide groove is formed in the axial direction of the convex column, a through hole is formed in the bottom inside the groove, and the through hole is communicated with the liquid guide groove.

Preferably, a push plate is fixed at one end of the push rod, which is far away from the piston, and anti-skid grains are arranged on the outer surface wall of the push plate.

Preferably, the outer wall of the syringe is provided with scale marks.

Preferably, the caulking groove is an annular groove, and the depth of one end of the caulking groove close to the outer port of the liquid outlet nozzle is smaller than the depth of one end of the caulking groove far away from the outer port of the liquid outlet nozzle.

Preferably, the section of the insert block is of a right-angle trapezoidal structure.

Compared with the prior art, the utility model has the beneficial effects that:

(1) when the injector is used for injection, after the convex column enters the liquid outlet channel, the inner wall of the liquid outlet channel extrudes the hinged embedded block, when the embedded block moves to the embedded groove area, the pressure spring recovers to the original state, the hinged embedded block can be jacked up, the embedded block is embedded into the embedded groove, the convex column can be clamped to finish self-destruction at the moment, the push rod cannot be pulled out, and therefore the convex column cannot be recycled for secondary use.

(2) According to the utility model, by additionally arranging the liquid guide groove, the through hole and the like, when the convex column is contacted with the inner port of the liquid outlet channel, the residual liquid medicine in the needle cylinder can flow out from the flow guide gap between the plane and the inner wall of the liquid outlet channel, so that the residual liquid medicine is avoided, and then, the liquid medicine permeating into the groove can flow into the liquid guide groove through the through hole and then flow out through the liquid guide groove, so that the residual liquid medicine can be further avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an external view of the present invention;

FIG. 3 is a cross-sectional view of the post of the present invention;

FIG. 4 is a side view of the post of the present invention;

in the figure: 1. a needle cylinder; 2. a piston; 3. a push rod; 4. pushing a plate; 5. a liquid outlet nozzle; 6. caulking grooves; 7. a convex column; 8. an insert block; 9. scale lines; 10. a liquid guide groove; 11. a groove; 12. a through hole; 13. a pressure spring; 14. and (4) a plane.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: an inner inserting type self-destruction disposable injector comprises a needle cylinder 1, a liquid outlet 5 is integrally formed at the end part of the needle cylinder 1, a piston 2 is arranged in the needle cylinder 1, one end of the piston 2 far away from the liquid outlet 5 is connected with a push rod 3, a circular liquid outlet channel is axially arranged on the liquid outlet 5, an embedded groove 6 is arranged on the inner surface wall of the liquid outlet channel, a convex column 7 matched with the liquid outlet channel is fixed at one end of the piston 2 facing the liquid outlet 5, grooves 11 are respectively arranged at the upper end and the lower end of the convex column 7, an embedded block 8 is hinged at the upper end of the inner part of each groove 11, a pressure spring 13 is connected at the bottom end of each embedded block 8 and one side far away from the hinged end, one end of each pressure spring 13 far away from the embedded block 8 is connected with the bottom of the inner part of each groove 11, when the push rod 3 is pressed to inject liquid medicine, the embedded blocks 8 hinged with the convex columns 7 entering the liquid outlet channel, when the inner walls of the embedded blocks 8 move to the areas of the embedded grooves 6, the pressure spring 13 reconversion can jack up articulated abaculus 8, makes the abaculus 8 imbed to in the caulking groove 6, can block the projection 7 this moment and accomplish the self-destruction, makes push rod 3 can't pull out outward to unable recovery carries out the secondary and uses.

Further, the two side walls of the convex column 7 are integrally formed into a plane 14, the liquid guide groove 10 is formed in the axial direction of the convex column 7, the through hole 12 is formed in the bottom inside the groove 11, the through hole 12 is communicated with the liquid guide groove 10, a flow guide gap exists between the plane 14 and the inner wall of the liquid outlet channel, when the convex column 7 contacts the inner port of the liquid outlet channel, residual liquid medicine in the needle cylinder 1 can flow out from the flow guide gap, the liquid medicine residue is avoided, in addition, the liquid medicine permeating into the groove 11 can flow into the liquid guide groove 10 through the through hole 12, then flows out through the liquid guide groove 10, and the liquid medicine residue can be further avoided.

Furthermore, a push plate 4 is fixed at one end, far away from the piston 2, of the push rod 3, anti-skid grains are formed in the outer wall of the push plate 4, and the push rod 3 is pressed by the hand pressing the push plate 4 with the anti-skid grains, so that force is applied to the hand conveniently.

Furthermore, the outer wall of the syringe 1 is provided with scale marks 9, and the injection amount can be visually known through the scale marks 9.

Further, the caulking groove 6 is the ring channel, and the caulking groove 6 is less than the degree of depth of keeping away from 5 outer ports one end of liquid outlet mouth that is close to 5 outer ports one end of liquid outlet mouth, and the cross-section of abaculus 8 is the right trapezoid structure, and when piston 2 took place to rotate, the abaculus 8 rotated thereupon, and annular caulking groove 6 makes abaculus 8 can imbed in it all the time.

The working principle and the using process of the utility model are as follows: when the push rod 3 is pressed to inject liquid medicine, the convex column 7 enters the liquid outlet channel, the inner wall of the liquid outlet channel extrudes the hinged embedded block 8, the embedded block 8 enters the groove 11, when the embedded block 8 moves to the area of the embedded groove 6, the pressure spring 13 recovers to the original state, the hinged embedded block 8 can be jacked, the embedded block 8 is embedded into the embedded groove 6, the convex column 7 can be clamped at the moment to finish self-destruction, the push rod 3 cannot be pulled out, and therefore the push rod cannot be recovered for secondary use, in addition, a flow guide gap exists between the plane 14 and the inner wall of the liquid outlet channel, when the convex column 7 contacts the inner port of the liquid outlet channel, the residual liquid medicine in the needle cylinder 1 can flow out from the flow guide gap, the liquid medicine residue is avoided, in addition, the liquid medicine permeating into the groove 11 can flow into the liquid guide groove 10 through the through hole 12 and then flows out through the liquid guide groove 10, and the residual liquid medicine can be further avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. An internally inserted self-destroying disposable syringe, comprising: including cylinder (1), the tip integrated into one piece of cylinder (1) has liquid outlet (5), and inside piston (2) that is equipped with of cylinder (1), the one end that liquid outlet (5) were kept away from in piston (2) is connected with push rod (3), the circular shape drain passage has been seted up to the axial of liquid outlet (5), caulking groove (6) have been seted up to the inside table wall of drain passage, piston (2) towards the one end of liquid outlet (5) be fixed with drain passage assorted projection (7), recess (11) have all been seted up to the upper and lower end of projection (7), the inside upper end of recess (11) articulates there is abaculus (8), abaculus (8) bottom and one side of keeping away from the hinged end are connected with pressure spring (13), the one end that abaculus (8) were kept away from in pressure spring (13) links to each other with the inside bottom of recess (11).

2. An internally inserted, self-destroying, disposable syringe according to claim 1, wherein: the liquid guide groove is characterized in that two side walls of the convex column (7) are integrally formed into a plane (14), a liquid guide groove (10) is formed in the axial direction of the convex column (7), a through hole (12) is formed in the bottom of the inner portion of the groove (11), and the through hole (12) is communicated with the liquid guide groove (10).

3. An internally inserted, self-destroying, disposable syringe according to claim 2, wherein: and a push plate (4) is fixed at one end of the push rod (3) far away from the piston (2), and anti-skid grains are arranged on the outer surface wall of the push plate (4).

4. An internally-insertable, self-destroying disposable syringe according to claim 3, further comprising: the outer surface wall of the needle cylinder (1) is provided with scale marks (9).

5. The disposable, internally-disposable syringe of claim 4 wherein: the caulking groove (6) is an annular groove, and the depth of the caulking groove (6) close to one end of the outer port of the liquid outlet nozzle (5) is smaller than the depth of the end of the outer port of the liquid outlet nozzle (5).

6. An internally-insertable, self-destroying disposable syringe according to claim 5, further comprising: the section of the embedded block (8) is of a right-angle trapezoidal structure.