CN202236711U

CN202236711U - Disposable and self-destructive syringe

Info

Publication number: CN202236711U
Application number: CN2011203431735U
Authority: CN
Inventors: 谢洪强; 董合军; 杨超
Original assignee: Chengdu Xinjin Shifeng Medical Instrument Co Ltd
Current assignee: Chengdu Xinjin Shifeng Medical Instrument Co Ltd
Priority date: 2011-09-14
Filing date: 2011-09-14
Publication date: 2012-05-30
Anticipated expiration: 2021-09-14

Abstract

The utility model discloses a disposable and self-destructive syringe, comprising an outer casing, a mandrel, a piston and a syringe needle tube assembly disposed at the upper end of the outer casing, wherein the piston is disposed at the upper end of the mandrel. The disposable and self-destructive syringe is characterized in that: an anti-retreating groove is disposed on the inner wall of the outer casing, and four reversing buckles are disposed on the mandrel. Compared with a common syringe, the disposable and self-destructive syringe disclosed by the utility model after an improvement achieves a self-destructive effect due to that when the reversing buckles of the mandrel retreat into the anti-retreating groove of the outer casing, the reversing buckles are mutually matched with the anti-retreating groove, and the mandrel cannot be pulled out from the anti-retreating groove any more after the matching; the self-destructive syringe can be used only once and automatically destructed after being used once, so that the infection risk brought to the patient due to the repeated use of syringe is efficiently overcome; and the self-destructive syringe is automatically destructed after being used once, so that medical care personnel are convenient to dispose.

Description

Single-Use Auto-Disable Syringes

Technical field

This utility model relates to a kind of medical apparatus and instruments, especially a kind of Single-Use Auto-Disable Syringes.

Background technology

Can prevent reusable disposable syringe product after self-destruction syringe is to use, well-known, Single-Use Auto-Disable Syringes is the very frequent syringe of a kind of use; The doctor often can use this syringe in the process of giving treatment to a patient, after injection finishes, rely on craft or mechanical forces; Push rod can not be extracted out in syringe, reach self-locking, perhaps the sealing property of piston is destroyed; Perhaps the push rod of syringe can be inferred, finally reaches to prevent the purpose that reuses.

The utility model content

The purpose of this utility model is at this a kind of Single-Use Auto-Disable Syringes of damage automatically of being convenient to just to be provided.

This utility model is to realize like this; Construct a kind of Single-Use Auto-Disable Syringes; The syringe needle tube assembly that includes overcoat, core bar, piston and be arranged on outer set upper side; Piston is arranged on the upper end of core bar, it is characterized in that: wherein said outer casing inner wall has back stop slot, has 4 back-offs on the wherein said core bar.

The advantage of this utility model is: the said self-destruction syringe of this utility model is compared ordinary syringe through improvement; When the back-off of core bar fell back in the overcoat back stop slot, back-off and back stop slot cooperatively interacted, and core bar just can not be pulled out from back stop slot again after cooperating; Reach the self-destruction effect; Self-destruction syringe can only use once, and just damage has automatically overcome the infection risk that brings to the patient because of the syringe repeated use effectively after the disposable use; Damage automatically makes things convenient for medical personnel to handle after the disposable use of self-destruction syringe.

Description of drawings

Fig. 1 is the overall structure sketch map of this utility model.

Fig. 2 is the back stop slot of this utility model and the structural representation of back-off part.

Fig. 3 is the sketch map after this utility model self-destruction.

Among the figure: 1, overcoat, 2, core bar, 3, piston, 4, the syringe needle tube assembly, 5, back stop slot, 6, back-off.

The specific embodiment

Below in conjunction with accompanying drawing this utility model is made detailed description:

In order to overcome the deficiency of prior art, this utility model provides a kind of Single-Use Auto-Disable Syringes at this, is convenient to just damage automatically after using.This syringe syringe needle tube assembly 4 of including overcoat 1, core bar 2, piston 3 and being arranged on overcoat 1 upper end wherein, piston 3 is arranged on the upper end of core bar 2, in promotion lower piston 3 its external sleeve 1 of core bar 2, moves.Wherein said overcoat 1 inwall has back stop slot 5, has 4 back-offs 6 on the wherein said core bar 2.Sketch map after the self-destruction such as Fig. 3, during use, when the back-off 6 of core bar 2 fell back in the overcoat back stop slot 5, back-off 6 cooperatively interacted with back stop slot 5, just core bar 2 can not be pulled out from back stop slot 5 again after cooperating, reached the self-destruction effect.The said self-destruction syringe of this utility model is compared ordinary syringe through improvement; The advantage that following aspect is arranged: self-destruction syringe can only use once; Just damage has automatically overcome the infection risk that brings to the patient because of the syringe repeated use effectively after the disposable use; Damage automatically makes things convenient for medical personnel to handle after the disposable use of self-destruction syringe, easily reaches the purpose of self-destruction.

Claims

1. Single-Use Auto-Disable Syringes; The syringe needle tube assembly (4) that includes overcoat (1), core bar (2), piston (3) and be arranged on overcoat (1) upper end; Piston (3) is arranged on the upper end of core bar (2); It is characterized in that: wherein said overcoat (1) inwall has back stop slot (5), has 4 back-offs (6) on the wherein said core bar (2).