Syringe

Details Syringe Syringe

1994-12-08

1996-01-02

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604272, A61M 500

Patent

active

054803845

ABSTRACT:
In a hypodermic syringe of the type comprising a chamber for liquid to be injected and a needle having a point for injection of the liquid, the syringe additionally includes, in contact with the liquid flow path through the syringe, a pre-stressed hydrophilic insert that, on hydration by contact with liquid, expands to block the flow path. The syringe is thus self-blocking; it can also be self-blunting, thus prevent reuse.

REFERENCES:
patent: 4781683 (1988-11-01), Wozniak et al.
patent: 4952206 (1990-08-01), Ibanez

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