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Automatically retractable needle safety syringe

A safety syringe and syringe technology, which is applied to hypodermic injection devices, needles, and devices introduced into the body, etc., can solve the problem of not being able to build an integral part of the device, and achieve the purpose of preventing the spread of blood-borne pathogens and other diseases, and is inexpensive, efficient, and affordable. Effective use

Inactive Publication Date: 2008-12-17
刘易斯·R·范戴克
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these security features are just some accessories, and can not be built as an integral part of the above-mentioned device
So the safety feature of the needleless jet injector is rendered useless by being disassembled, or by not using a sterile new nozzle and / or fluid chamber accessory

Method used

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  • Automatically retractable needle safety syringe
  • Automatically retractable needle safety syringe
  • Automatically retractable needle safety syringe

Examples

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Embodiment Construction

[0032] The present invention relates to a safety syringe device and method for injecting liquids from a syringe which automatically retracts a hollow needle immediately after a single use and is then permanently retained within the syringe body. The present invention prevents the reuse and accidental penetration of contaminated syringe needles.

[0033] Fig. 1 is a cross-sectional view of a safety syringe device 10 of the present invention. As shown in FIG. 1 , in an example of the safety syringe device 10 of the present invention, it includes a syringe body 12 , a plunger 14 and a needle body 16 . Both the plunger 14 and the needle 16 are slidably disposed partially within the syringe body 12 . The syringe body 12 is a barrel 18 having two opposed ends 30 , 32 and includes a stem seal 36 and a variable vacuum chamber 24 at one end 30 of the syringe body 12 . The plunger 14 includes a rod 60 having a handle end 62 , a piston end 64 , a piston seal 72 and a punch 70 . Wherei...

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PUM

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Abstract

An automatically retractable needle safety syringe apparatus (10) having an integral safety feature that automatically and immediately retracts the piercing tip end (78) of the needle body (16) after a single use, due to a punch (70) which frictionally engages the foundation of the ferrule (84) and a vacuum created within the syringe body (12) during the process of injecting fluid therefore causing the piercing tip end (78) and the needle body (16) to permanently reside enclosed within the syringe body (12) protectively pressed against the inner surface (28) of the tube (18) thus alleviating needle reuse and accidental needle prickings with contaminated syringe needles and therefore ultimately preventing the transmission of blood-borne pathogens and other diseases by contaminated syringe needles. The method of operation is also disclosed.

Description

technical field [0001] The present invention relates to a safety syringe, in particular to a safety syringe device and method that injects liquid from the syringe, automatically retracts the hollow needle immediately after a single use, and is permanently protected in the syringe body. Background technique [0002] In recent years, the public has become increasingly aware of the personal accidents caused by needle reuse and accidental needle sticks. This is especially likely to occur among drug addicts, drug users (eg diabetics), medical and nursing staff. Needle reuse and accidental tip sticking can transmit more than two dozen bloodborne pathogens, including HIV, AIDS, hepatitis B, hepatitis C, syphilis, malaria, tuberculosis and herpes . [0003] The problem of transmission of blood-borne pathogens through re-use of needles is acute among drug users who are unwilling or unable to pay to use sterile needles. The U.S. government recognizes this problem and tries to contr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M29/00A61M5/32
CPCA61M5/3234A61M2005/3224A61M2005/3242
Inventor 刘易斯·R·范戴克
Owner 刘易斯·R·范戴克
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