CN206443985U

CN206443985U - Medical syringe

Info

Publication number: CN206443985U
Application number: CN201621239760.9U
Authority: CN
Inventors: 汪艳; 金宗兰; 胡元泉; 李春伟; 韩东
Original assignee: First Affiliated Hospital of Anhui Medical University
Current assignee: First Affiliated Hospital of Anhui Medical University
Priority date: 2016-11-19
Filing date: 2016-11-19
Publication date: 2017-08-29
Anticipated expiration: 2026-11-19

Abstract

The utility model discloses a kind of medical syringe, it includes outer barrel, the outer barrel both ends open, its one inner cylinder of internal suit, one side end face of the inner cylinder is provided with syringe needle, and its other end sets push rod, and push rod one end passes through inner cylinder to the outside of outer barrel, piston head is provided with push rod, piston head is built in inner cylinder；A tight lock part is provided with the one side of outer barrel, the through hole that tight lock part is opened up through outer tube side wall is simultaneously fixed with the outboard end of inner cylinder.The utility model is by setting outer barrel and a tight lock part, traditional syringe is retracted into outer barrel after the completion of use, and then hide syringe needle, the thing that effectively prevent needlestick injuries medical personnel occurs, the adjustable length of whole syringe, design is very novel, using also safer.

Description

Medical syringe

Technical field

The utility model is related to a kind of medicine equipment, and in particular to a kind of medical syringe.

Background technology

Medical syringe is a kind of conventional transfusion instrument, and it is injected by push rod and piston, but is due to its syringe needle Process, after having used, often occurs the situation for stabbing medical personnel, causes the germ with patient to enter medical personnel In vivo, there is superinfection.Therefore the problem of this problem is in the urgent need to address how is solved.

The content of the invention

Technical problem to be solved in the utility model is to provide a kind of thing for avoiding needlestick injuries medical personnel and sent out It is raw, the adjustable length of whole syringe, it is very novel to design, using also safer.

The utility model is achieved through the following technical solutions：A kind of medical syringe, including outer barrel, the outer barrel two End opening, its one inner cylinder of internal suit a, side end face of the inner cylinder is provided with syringe needle, and its other end sets push rod, pushes away Bar one end is provided with piston head, piston head is built in inner cylinder through inner cylinder to the outside of outer barrel on push rod；The one side of outer barrel On be provided with a tight lock part, tight lock part is simultaneously fixed through the through hole that outer tube side wall is opened up with the outboard end of inner cylinder.

Preferably, the tight lock part includes a button, button one end, which is vertically arranged on a push rod, push rod, is set with a bullet Spring, the through hole and its end that push rod is opened up through outer tube side wall is contacted with inner cylinder lateral surface.

Preferably, the outboard end of the push rod is provided with a silicagel pad.

Preferably, the outboard end of the push rod sets a press section, parenteral solution is arranged at the accommodating chamber opened up in inner cylinder It is interior.

Preferably, encapsulated outside the inner cylinder, it is encapsulated after the external diameter of inner cylinder be slightly larger than the internal diameter of outer barrel, the length of inner cylinder Length of the degree less than outer barrel.

The beneficial effects of the utility model are：The utility model is by setting outer barrel and a tight lock part so that traditional Syringe can be retracted into outer barrel after the completion of use, and then hides syringe needle, effectively prevent needlestick injuries medical personnel Thing occur, the adjustable length of whole syringe, design it is very novel, using also safer.

Brief description of the drawings

Fig. 1 is overall structure diagram of the present utility model；

Fig. 2 is the structural representation of tight lock part in the utility model.

Coding in figure is respectively：1 is syringe needle, and 2 be piston head, and 3 be tight lock part, and 4 be push rod, and 5 be outer barrel, and 6 be inner cylinder, 7 be press section, and 8 be button, and 9 be spring, and 11 be push rod, and 12 be silicagel pad.

Embodiment

As shown in figure 1, this medical syringe, including outer barrel 5, the both ends open of outer barrel 5, its one inner cylinder 6 of internal suit, One side end face of inner cylinder 6 is provided with syringe needle 1, and its other end sets push rod 4, and the one end of push rod 4 passes through inner cylinder to the outside of outer barrel, Piston head 2 is provided with push rod 4, piston head 2 is built in inner cylinder 6；A tight lock part 3 is provided with the one side of outer barrel 5, is locked Through hole that tight portion 3 is opened up through outer tube side wall is simultaneously fixed with the outboard end of inner cylinder.

As shown in Fig. 2 tight lock part 3 includes a button 8, the one end of button 8 is vertically arranged on a push rod 11, push rod 11 and is set with one Spring 9, the through hole and its end that push rod 11 is opened up through outer tube side wall is contacted with inner cylinder lateral surface, and the outboard end of push rod is set There are a silicagel pad 12, silicagel pad 12 primarily to increase and the frictional force of inner tank theca.

In use, being drawing liquid first, syringe needle is exposed to outside outer barrel, now in order to prevent inner cylinder with pull direction move It is dynamic, and then need to fix inner cylinder and outer barrel, button now is pushed down with a finger, push rod is pressed into through hole, and silicagel pad connects Inner cylinder is touched, now inner cylinder can not be moved again, you can the pull liquid as general syringe；

Upon injection, its mode of operation is identical with general syringe, unique the difference is that needing to press button, it is ensured that Inner cylinder is fixed, after the completion of injection, now release button, pull push rod, i.e. the direction pull away from syringe needle, now inner cylinder with Pulling force to be gradually retracted into outer barrel, until the whole retractions of syringe needle are in inner cylinder.

In the present embodiment, the outboard end of push rod sets a press section 7, and parenteral solution is arranged at the accommodating chamber opened up in inner cylinder It is interior, it is encapsulated outside inner cylinder, it is encapsulated after the external diameter of inner cylinder be slightly larger than the internal diameter of outer barrel, the length of inner cylinder is less than the length of outer barrel.

In design, it is necessary to assure the frictional force between inner cylinder and outer barrel is necessarily less than the friction between piston head and inner cylinder Power, so just can guarantee that mobile retraction of the inner cylinder relative to outer barrel.

Claims

1. a kind of medical syringe, it is characterised in that：Including outer barrel (5), outer barrel (5) both ends open, its internal suit one Inner cylinder (6) a, side end face of the inner cylinder (6) is provided with syringe needle (1), and its other end sets push rod (4), push rod (4) one end Through inner cylinder (6) to the outside of outer barrel (5), piston head (2) is provided with push rod (4), piston head (2) is built in inner cylinder (6)； Be provided with a tight lock part (3) on the one side of outer barrel (5), the through hole that tight lock part (3) is opened up through outer barrel (5) side wall and with it is interior The outboard end of cylinder (6) is fixed.

2. medical syringe as claimed in claim 1, it is characterised in that：The tight lock part (3) includes a button (8), button (8) one end, which is vertically arranged on a push rod (11), push rod (11), is set with a spring (9), and push rod (11) is opened up through outer barrel (5) side wall Through hole and its end contacted with inner cylinder (6) lateral surface.

3. medical syringe as claimed in claim 2, it is characterised in that：The outboard end of the push rod (11) is provided with a silica gel Pad (12).

4. medical syringe as claimed in claim 1, it is characterised in that：The outboard end of the push rod (4) sets a press section (7), parenteral solution is arranged in the accommodating chamber opened up in inner cylinder (6).

5. medical syringe as claimed in claim 1, it is characterised in that：The inner cylinder (6) is outside encapsulated, it is encapsulated after inner cylinder (6) external diameter is slightly larger than the internal diameter of outer barrel (5), and the length of inner cylinder (6) is less than the length of outer barrel (5).