Safety syringe

Details Safety syringe Safety syringe

1989-03-06

1990-06-12

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604195, A61M 532

Patent

active

049329391

ABSTRACT:
An improved safety syringe is provided to prevent access to or re-use of a used medical needle. The safety syringe includes a support member for mounting a medical needle on a syringe barrel of the type having a reciprocal sliding piston carried therein. When the syringe is used, the piston is advanced to a position engaging the support member. Subsequent retraction of the piston withdraws the support member and medical needle to a safety position within the syringe barrel. In the preferred form, the needle is withdrawn through a narrow needle aperture into the syringe barrel interior, thereby substantially preventing access to the needle or re-insertion through the aperture for re-use.

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patent: 4808169 (1928-02-01), Haber

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