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Automatic retracting type disposable safe syringe

A safety syringe and automatic retraction technology, applied in the directions of syringes, infusion sets, sensors, etc., can solve the problems of poor reliability, high cost, and many structural components, and achieve the effect of eliminating repeated use, easy recycling and processing, and convenient use.

Inactive Publication Date: 2009-06-24
上海双鸽实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common deficiencies in the prior art include: complex product structure, poor reliability, high cost, difficulty in mass production, etc.
Although this technology can solve the problem of needle retraction within a certain range, it has many structural components and complex process assembly in the factory, which is not conducive to mass production in the factory

Method used

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  • Automatic retracting type disposable safe syringe
  • Automatic retracting type disposable safe syringe
  • Automatic retracting type disposable safe syringe

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Embodiment Construction

[0035] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0036] In view of the fact that the present invention combines the anti-sticking needle requirement (safety syringe) and the characteristics of preventing reuse (self-destructing syringe), the following requirements must be met:

[0037] Anti-reuse characteristics: should meet the requirements of ISO7886-4

[0038] Security features:

[0039] Integration: safety devices should be integrated in the product

[0040] One-handed operation: should be operable with one hand

[0041] Operability behind the needle point: the hand is positioned behind the needle point to complete the activation of the safety device

[0042] Start-up process: the safety device should take effect instantaneously

[0043] Activation time: the safety device should be eff...

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Abstract

The invention relates to an automatic retracted disposable safety syringe, which is formed by combining a plurality of components such as a needle point, a needle stand, a sleeve, a plunger, a telescopic spring and a jacket, wherein the injection needle point is combined with the needle stand; the spring is sleeved outside a cylinder at the front end of a needle stand body; the needle stand body and the spring are positioned at the front end of an inner cavity of the sleeve through an annular flange on the inner wall of the sleeve; the tail of the needle stand body is provided with a pointed cone of which the bottom is convexly provided with an outer ring of a platform; and the middle of the platform is provided with an annular thin wall. The annular thin wall of the needle stand is broken into two parts after the syringe injects predetermined dosage through elaborative design, and a needle tube is automatically retracted into the sleeve in virtue of the elasticity of the spring.

Description

technical field [0001] The invention relates to a medical disposable syringe, in particular to a safety syringe whose needle tube can be automatically retracted into a core rod after injection. Background technique [0002] Medical syringes are commonly used medical devices. Medical syringes are mainly used for injecting liquid medicine or testing blood. [0003] After injecting with a syringe or taking a blood sample from a patient, there is a risk for the doctor or nurse to be punctured by the needle on the syringe. In foreign countries, this phenomenon is called "sticky needles". As a result, medical staff and those who handle these medical wastes are often exposed to the risk of infection with blood-related diseases, such as AIDS (HIV), hepatitis B (HBV), hepatitis C (HCV), etc. [0004] In addition, one of the main reasons for the spread of AIDS and hepatitis among humans is the risk of patients sharing and reusing syringes. [0005] According to the report of the Wo...

Claims

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Application Information

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IPC IPC(8): A61M5/178A61B5/153
Inventor 李仙玉
Owner 上海双鸽实业有限公司
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