Vacuum infusion device

Details Vacuum infusion device Vacuum infusion device

1990-04-26

1991-06-18

Hirsch, Paul J.

Surgery

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

Treating material introduced into or removed from body...

604131, A61M 3100

Patent

active

050246640

ABSTRACT:
A vacuum biased disposable infuser is provided having a liquid chamber (14) and at least one vacuum chamber (44). The liquid chamber (14) includes a liquid plunger (26) contained therein while the vacuum chamber (44) includes a vacuum plunger (48). The plungers (26, 48) are connected by an arm such that when liquid under pressure is provided to the liquid chamber (14), the vacuum plunger (48) is drawn back in the vacuum chamber (44). The device is further preloaded such that at the end of infusion, the vacuum plunger (48) does not abut against the vacuum chamber (44).

REFERENCES:
patent: 3349767 (1967-10-01), Gidlund
patent: 3727614 (1973-04-01), Kniazuk
patent: 4022209 (1977-05-01), Nehring
patent: 4036232 (1977-07-01), Genese
patent: 4180067 (1979-12-01), Derlien
patent: 4212298 (1980-07-01), Gezari
patent: 4303376 (1981-12-01), Siekmann
patent: 4560979 (1985-12-01), Rosskopf
patent: 4666430 (1987-05-01), Brown et al.
patent: 4765509 (1988-08-01), Eisenhut et al.
patent: 4773900 (1988-09-01), Cochran
patent: 4813937 (1989-03-01), Vaillancourt

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