Hypodermic syringe

Details Hypodermic syringe Hypodermic syringe

1990-09-06

1991-12-03

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604 82, 604218, A61M 500

Patent

active

050696700

ABSTRACT:
A hypodermic syringe has a generally cylindrically tubular body extending along an axis and having an axial front end formed with a radially outwardly projecting annular bead, a piston axially displaceable in the body, a plug having a rearwardly directed flange fitting complementarily over the front end of the body at the bead and forwardly blocking the body, and a flat soft seal ring compressed axially between the plug and the front end of the body. The body has a rear end provided with a finger-rest crosspiece and the piston is provided with a plunger projecting axially out the rear end past the crosspiece.

REFERENCES:
patent: 2661740 (1953-12-01), Hickey
patent: 4129130 (1978-12-01), Bigarella
patent: 4185628 (1980-01-01), Kopfer
patent: 4226236 (1980-10-01), Genese
patent: 4240425 (1980-12-01), Akhavi
patent: 4781701 (1988-11-01), Geprags

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