Syringe

Details Syringe Syringe

1985-11-22

1987-01-27

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604218, 604227, 128765, A61M 500

Patent

active

046392483

ABSTRACT:
The syringe for taking and emptying a liquid comprises a cylindrical body and a piston actuated by means of a piston rod movable coaxially in the body for sucking or ejecting a liquid through a needle-carrying nozzle. This body is provided with a first bearing surface of approximatively semi-cylindrical cross-section. The piston is attached through its rod to a second bearing surface. By moving the second bearing surface toward the first bearing surface, the volume of the inner chamber of the cylindrical body increases, whereas moving the second bearing surface away from the first bearing surface will decrease the volume of this chamber.

REFERENCES:
patent: 3325061 (1967-06-01), Ellsworth
patent: 3990446 (1976-11-01), Taylor
patent: 4484915 (1984-11-01), Tartaglia

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