CN201356870Y

CN201356870Y - Self-destroying type quantitative injector

Info

Publication number: CN201356870Y
Application number: CNU2009200183280U
Authority: CN
Inventors: 赵继龙; 聂玉才
Original assignee: Shandong Shinva Ande Healthcare Apparatus Co Ltd
Current assignee: Shandong Shinva Ande Healthcare Apparatus Co Ltd
Priority date: 2009-01-17
Filing date: 2009-01-17
Publication date: 2009-12-09
Anticipated expiration: 2019-01-17

Abstract

The utility model relates to a self-destroying type quantitative injector, which is a medical appliance, and comprises a cylinder body, a piston and a core rod, wherein the piston is assembled on the front end of the core rod, and the core rod is sleeved in the cylinder body. The injector is characterized in that both sides of the cylinder body are respectively provided with a front and a rear locating notches which correspond to each other, vertical guiding grooves are arranged on the inner wall of the cylinder body, which corresponds to the front and the rear locating notches, and projections which are assembled in the guiding grooves and reverse stop elastic pallets which correspond to the locating notches are arranged on the core rod. The structure is simple, the manufacturing is convenient, and the injector is beneficial to popularize and apply.

Description

Self-destruction type calibrated shot device

Technical field

This utility model relates to a kind of self-destruction type calibrated shot device, is medical appliance.

Background technology

Disposable syringe is a kind of medical apparatus commonly used, in order to prevent cross infection, only for once using, after using, can be reclaimed still existing common disposable syringe by the lawless person, after simply sterilizing, packing, resale, cause the infection of pathogenic bacteria, the harm people's is healthy, self-destruction syringe, as: destroy air-tightness, locked, the structure that fractures etc., can not reclaim use once more after causing use, play the security protection effect.The structure difference, performance is different, present most of self-destruction syringe complex structures, difficulty of processing is big, is not easy to popularize use.

The utility model content

The purpose of this utility model is to provide a kind of self-destruction type calibrated shot device, and is simple in structure, easy to make, is beneficial to popularization and application.

Self-destruction type calibrated shot device described in the utility model, comprise cylindrical shell, piston and core bar, piston is assemblied in the front end of core bar, core bar is sleeved in the cylindrical shell, it is characterized in that the both sides of cylindrical shell are respectively equipped with former and later two locating notches of mutual correspondence, the cylinder inboard wall corresponding with the front and back locating notch is provided with gathering sill longitudinally, and core bar is provided with projection and the reverse stop elastic pawl corresponding with locating notch that is fitted in the gathering sill.

Under confined state, the projection of core bar is fitted in the gathering sill of cylindrical shell, and reverse stop elastic pawl places the back locating notch.During use, in the stroke of back locating notch length, promote core bar and can carry out aspiration medicinal liquid, carry out the aerofluxus action, because reverse stop elastic pawl is buckled in the locating notch of back, core bar can not extracted the disengaging cylindrical shell because of maloperation out; After medicinal liquid reaches required dosage, promote core bar and carry out injection liquid, after medicinal liquid was injected and finished, the reverse stop elastic pawl on the core bar flicked and snaps in the prelocalization notch, retreats self-destruction, had prevented that the recovery once more of syringe from using.

In this utility model:

Projection on the core bar can be for the protruding rib that matches with gathering sill, and is solid and reliable.

The length greater than the prelocalization notch of the Design of length of back locating notch, the convenient absorption medicinal liquid and the aerofluxus of making up a prescription.

The preferred cross core bar of core bar can directly design projection on two relative cross limits with reverse stop elastic pawl, and during working of plastics, directly injection moulding becomes the overall structure of integral type, and reverse stop elastic pawl gets final product by the elasticity of plastics self.

This utility model self-destruction type calibrated shot device, simple in structure, easy to make, safe and reliable, be beneficial to popularization and application.

Description of drawings

Fig. 1, this utility model one example structure sketch map.

Fig. 2, cylindrical shell cutaway view.

Among the figure: 1, cylindrical shell 2, piston 3, core bar 4, prelocalization notch 5, reverse stop elastic pawl 6, back locating notch 7, handle 8, gathering sill.

The specific embodiment

The utility model is described in further detail in conjunction with the foregoing description accompanying drawing.

As shown in the figure, self-destruction type calibrated shot device described in the utility model, comprise cylindrical shell 1, piston 2 and core bar 3, piston 2 is assemblied in the front end of core bar 3, core bar 3 is sleeved in the cylindrical shell 1, the both sides of cylindrical shell 1 are respectively equipped with former and later two locating notches 4 of mutual correspondence, 6, the length of back locating notch 6 is greater than the length of prelocalization notch 4, with front and back locating notch 4, cylindrical shell 1 inwall of 6 correspondences is provided with gathering sill 8 longitudinally, core bar 3 is provided with two of projectioies being fitted in the gathering sill 8 and the reverse stop elastic pawl 5 corresponding with locating notch, core bar 3 preferred cross plastics core bars, two of projectioies are located immediately on two relative cross limits with reverse stop elastic pawl 5, adapt with gathering sill 8 on cylindrical shell 1 inwall.

Under normal confined state, the protruding rib of core bar 3 is fitted in the gathering sill 8 of cylindrical shell 1, and reverse stop elastic pawl 5 places back locating notch 6.During use, in the length stroke of back locating notch 6, promote core bar 3 and can carry out aspiration medicinal liquid and bleeding, because reverse stop elastic pawl 5 is buckled in the locating notch 6 of back, core bar 3 can not extracted out because of maloperation and break away from cylindrical shell 1; After medicinal liquid reaches required dosage, promote core bar 3 and carry out injection liquid, after medicinal liquid was injected and finished, the reverse stop elastic pawl 5 on the core bar 3 automatically springed open and snaps in the prelocalization notch 4, can not retreat, and retreats self-destruction, had prevented that the recovery once more of syringe from using.

Claims

1, a kind of self-destruction type calibrated shot device, comprise cylindrical shell, piston and core bar, piston is assemblied in the front end of core bar, core bar is sleeved in the cylindrical shell, it is characterized in that the both sides of cylindrical shell are respectively equipped with former and later two locating notches of mutual correspondence, the cylinder inboard wall corresponding with the front and back locating notch is provided with gathering sill longitudinally, and core bar is provided with projection and the reverse stop elastic pawl corresponding with locating notch that is fitted in the gathering sill.

2, self-destruction type calibrated shot device according to claim 1 is characterized in that the protruding rib of projection for matching with gathering sill on the core bar.

3, self-destruction type calibrated shot device according to claim 1 and 2 is characterized in that the length of the length of back locating notch greater than the prelocalization notch.