Suction injector

Details Suction injector Suction injector

1981-02-26

1983-07-19

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

A61M 500

Patent

active

043938701

ABSTRACT:
A suction injector comprises a suction cup and an exchangeable cannula inserted into the cup for injecting a liquid medicine under human skin by the action of a piston movable in a cylinder. The suction cup is formed with an outer chamber which accumulates negative pressure and an inner chamber closed with a membrane which is placed over the skin to be treated. A tubular member is provided in the suction cup having a number of flexible projections adapted to prevent communication of the negative pressure in the outer chamber to the inner chamber until the membrane is in pressure contact with the skin and to break this communication when the membrane with the skin are lifted towards the cannula.

REFERENCES:
patent: 1934046 (1933-11-01), Demarchi
patent: 2743723 (1956-05-01), Hein
patent: 3122138 (1964-02-01), Geary
patent: 4114619 (1978-09-01), Wagner
patent: 4284077 (1981-08-01), Wagner

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