Non-reusable syringe

Details Non-reusable syringe Non-reusable syringe

1987-03-04

1987-10-13

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604228, A61M 500

Patent

active

046996141

ABSTRACT:
A non-reusable syringe comprising a barrel having an open end and a restricted end, a piston slidably positioned within the barrel and forming a liquid-tight seal with the interior of the barrel, a shaft freely slidable within the barrel and extending beyond one end of the barrel, a connector engaging the piston and the shaft and having a protrusion extending therefrom, and a guide formed on the shaft for receiving the protrusion of the connector. The connector is detachable form the shaft. The connector comprises a collar holder fastened at one end to the piston and a collar freely rotatable about the collar holder. The guide comprises a groove formed on the shaft which engages the protrusion from the collar. The guide causes the shaft to be disconnected form the connector following an injection of a liquid from the syringe.

REFERENCES:
patent: 3754644 (1973-08-01), Hampel
patent: 3941129 (1976-03-01), Pleznac
patent: 4252118 (1981-02-01), Richard et al.
patent: 4439187 (1984-03-01), Butterfield
patent: 4507117 (1985-03-01), Vining et al.

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