CN213312502U

CN213312502U - Anti-pollution injection device

Info

Publication number: CN213312502U
Application number: CN202021849913.8U
Authority: CN
Inventors: 张婷
Original assignee: Sun Yat Sen Memorial Hospital Sun Yat Sen University
Current assignee: Sun Yat Sen Memorial Hospital Sun Yat Sen University
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-06-01
Anticipated expiration: 2030-08-28

Abstract

The utility model provides an anti-pollution injection device, which comprises an injection needle cylinder, a piston assembly and a connecting assembly; the piston assembly comprises a piston rubber head which is in sliding connection with the injection needle cylinder, and a sealing membrane covers the piston rubber head; the connecting assembly is arranged at the liquid outlet end of the injection needle cylinder and comprises a liquid outlet communicated with the injection needle cylinder, a first connecting body used for connecting a standard needle head and a second connecting body connected with the injection needle cylinder; the syringe has an everted hand-held structure. The utility model provides an anti-pollution injection device is through covering the seal membrane on gluing the head, can effectively prevent that the medicine in the syringe or the body fluid of extraction from contacting with the air or the operator pollutes inside the syringe when the operation syringe to lead to the medicine to deteriorate or the body fluid composition changes.

Description

Anti-pollution injection device

Technical Field

The application relates to the technical field of medical syringes, in particular to an anti-pollution injection device.

Background

Medical staff often need to inject medicine into a patient or extract body fluid of the patient through a syringe, a part of medicine or body fluid can go into a certain deterioration in the moment of contacting with air, medicine deterioration can cause medicine effect reduction or generate harmful substances, and body fluid deterioration causes accuracy reduction of inspection results. At present, in a syringe used clinically, a gap exists between a piston and a syringe tube wall, and when a medical worker uses the syringe, air enters the syringe tube through the gap between the piston and the syringe tube wall, so that medicines or body fluid are polluted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-pollution syringe, through separation outside air and syringe, avoid the medicine pollution.

The embodiment of the application provides an anti-pollution injection device, which comprises an injection needle cylinder, a piston assembly and a connecting assembly;

the piston assembly comprises a piston rubber head which is in sliding connection with the injection needle cylinder, and a sealing membrane covers the piston rubber head;

the connecting assembly is arranged at the liquid outlet end of the injection needle cylinder and comprises a liquid outlet communicated with the injection needle cylinder, a first connecting body used for connecting a standard needle head and a second connecting body connected with the injection needle cylinder;

the syringe has an everted hand-held structure.

Further, the anti-pollution injection device further comprises a puncturing device, wherein the puncturing device comprises a puncturing needle tube and a clamping shell, and the clamping shell is connected with the first connecting body in a buckling mode.

Further, the anti-pollution injection device further comprises a liquid taking device, wherein the liquid taking device comprises a first shell, a second shell and a hose, and the hose is used for connecting the first shell and the second shell; the first shell is connected with the first connecting body in a buckling mode.

Further, the piston assembly further comprises a push rod with air holes.

Further, the first connecting body of the anti-contamination injection device is a sterilized silica gel cylinder with visibility.

Compared with the prior art, the utility model discloses beneficial effect lies in:

1. the utility model provides an anti-pollution injection device, through covering the seal membrane on gluing the head, can prevent effectively that the medicine in the syringe or the body fluid of extraction from contacting with the air or the operator from polluting the syringe inside when operating the syringe to lead to medicine rotten or body fluid composition to change, reached the barrier outside air and got into the syringe, polluted the beneficial effect of medicine;

2. the anti-pollution injection device provided by the utility model is provided with the piercing device or the liquid taking device which is connected with the connecting component at the liquid outlet end of the injection needle cylinder, so that the components can be conveniently selected according to different functional requirements, and the beneficial effect of expanding the application range is achieved;

3. the utility model provides an anti-pollution injection device has the push rod of bleeder vent through the setting, has reached and has prevented to cover the damaged beneficial effect of seal membrane on the piston rubber head.

Drawings

Fig. 1 is a structural view of a contamination-preventive injection device provided in embodiment 1 of the present application;

fig. 2 is a structural view of a contamination-preventive injection device provided in embodiment 2 of the present application;

fig. 3 is a structural view of a contamination-preventive injection device provided in embodiment 3 of the present application;

fig. 4 is a structural view of a contamination-preventive injection device provided in embodiment 4 of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example 1:

referring to fig. 1, the present embodiment provides a contamination-proof injection device, which includes a syringe 10, a piston assembly 20, and a connecting assembly 30.

The piston assembly 20 comprises a piston rubber head 21 which is in sliding connection with the injection syringe 10, and the piston rubber head 21 is covered with a sealing membrane 22.

The connecting assembly 30 is disposed at the liquid outlet end of the syringe 10, and includes a liquid outlet 31 communicated with the syringe 10, a first connecting body 32 for connecting a standard needle, and a second connecting body 33 connected with the syringe 10. The liquid outlet 31 is communicated with the syringe 10 through a first connecting body 32. Wherein, the standard syringe needle can be divided into according to the usage: the first connecting body 32 can be arranged according to actual requirements, and the size of the first connecting body is matched with the model of a common needle.

The syringe barrel 10 has an everted, hand-held configuration.

The piston assembly 20 further includes a plastic push rod 23 for driving the piston rubber head 21 to perform piston motion in the injection syringe 1, and the plastic push rod is fixed to the lower surface of the piston rubber body. The piston rubber head 21 may be made of silicone or rubber, and in this embodiment, silicone is preferred. In addition, the sealing film 22 covering the surface of the piston rubber head 21 is a waterproof film, and water, air and macromolecular substances in the air can be effectively prevented from entering the injection syringe 10 through the piston rubber head 21 by covering the waterproof film. The waterproof membrane and the piston rubber head 21 are matched, so that the phenomenon that air enters the injector through a gap between the piston and the pipe wall to cause drug pollution is avoided, and the liquid to be injected inside the injection needle cylinder 10 is isolated and protected.

The connecting assembly 30 includes: the first connector 32 made of sterile silica gel or plastic material has the diameter of 3.5mm for a 10ml injection syringe, the diameter of 5mm for a 20ml injection syringe, the diameter of 6mm for a 30/50ml injection syringe, and the diameters of 2mm for the first connectors for 1ml/2ml/5ml injection syringes. The injection syringe 10 is of a transparent plastic structure, so that medicine or body fluid in the injection syringe can be observed conveniently during use.

It should be noted that, through the arrangement of the connection assembly 30, the product is provided with a function of extensible assembly and use with other injection standard components, such as a standard needle and a syringe sealing cap, when using the product, an operator only needs to hold the injection syringe 10 by hand to push the push rod 23, so as to cause the piston rubber head 21 to push the liquid in the injection syringe, and force the liquid to flow out from the liquid outlet 31, so that the injection action of the product is finished.

The utility model provides an anti-pollution injection device is through covering the seal membrane on gluing the head, can effectively prevent that the medicine in the syringe or the body fluid of extraction from contacting with the air or the operator pollutes inside the syringe when the operation syringe to lead to the medicine to deteriorate or the body fluid composition changes.

Example 2:

referring to fig. 2, the embodiment of the present application further provides a contamination-proof injection device, further comprising a puncturing device 40, wherein the puncturing device 40 includes a puncturing needle tube 41 and a clamping shell 42, and the clamping shell 42 is snap-connected to the first connecting body 32. The puncture needle tube 41 is connected to the syringe 10 through the first connecting body 32. In particular, the piercing means 40 is used to pierce a vial of medicament or directly to pierce the skin. The range of use of the injection device is extended by the piercing means.

Example 3:

referring to fig. 3, the present application further provides a contamination-proof injection device, further including: the liquid taking device 50 comprises a first shell 51, a second shell 52 and a hose 53, wherein the hose 53 is used for connecting the first shell 51 and the second shell 52; the first housing 51 is snap-fit connected to the first connecting body 32. The first housing 51 communicates with the syringe 10 through the first connecting body 32. The range of use of the injection device is expanded by the connecting means.

Example 4:

referring to fig. 4, the present embodiment further provides a contamination-proof injection device, and the piston assembly further includes a push rod 23 having a vent hole 24. The air holes 24 are arranged to avoid the situation that the sealing membrane 22 covered on the piston rubber head 21 is broken due to the overlarge air pressure in the injection syringe 10 when the injection device is used.

The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.

Claims

1. An anti-contamination injection device, comprising an injection syringe, a piston assembly and a connecting assembly;

the syringe has an everted hand-held structure.

2. The contamination-resistant injection device of claim 1, further comprising: the puncturing device comprises a puncturing needle tube and a clamping shell, and the clamping shell is connected with the first connecting body in a buckling mode.

3. The contamination-resistant injection device of claim 1, further comprising: the liquid taking device comprises a first shell, a second shell and a hose, wherein the hose is used for connecting the first shell and the second shell; the first shell is connected with the first connecting body in a buckling mode.

4. The contamination-resistant injection device of any of claims 1-3, wherein the piston assembly further comprises a push rod with air vents.

5. The contamination-resistant injection device of claim 1 wherein the first connector body is a sterilized silicone cylinder with visibility.