Readily activated hypodermic syringe

Details Readily activated hypodermic syringe Readily activated hypodermic syringe

1976-10-04

1978-03-14

Yasko, John D.

Surgery

Respiratory method or device

Ozone or ion generation

128218N, A61M 500

Patent

active

040785653

ABSTRACT:
A prefilled, readily activated syringe of the disposable type which can be activated in a fast and efficient manner. A vial containing the medicament to be administered is positioned in a syringe barrel and spaced from one point of a double piercing cannula member which is slidably received in the opposing end of the syringe barrel. Resilient finger gripping members engage a groove in the hub of the piercing cannula in one position with the piercing point spaced from the vial stopper. To activate the syringe one merely moves the slidable cannula member in a direction toward the vial wherein the finger gripping members are released from the first annular groove and engage a second annular groove spaced from the first. To provide needle point alignment and to prevent rotation during movement of the piercing cannula one of the finger gripping members rides in a groove which intersects the two annular grooves and also engages an open portion in a stop member which is positioned adjacent the end of the second groove.

REFERENCES:
patent: 2834346 (1958-05-01), Adams
patent: 2880725 (1959-04-01), Kendall
patent: 2902995 (1959-09-01), Loper
patent: 3043304 (1962-07-01), Higgins

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