Infiltration pump

Details Infiltration pump Infiltration pump

1985-08-14

1986-09-16

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604218, 604229, 222340, A61M 500

Patent

active

046120106

ABSTRACT:
The infiltration pump has an outer cylinder and an inner piston mounted for reciprocal motion within the cylinder. A fluid displacing seal is attached to one end of the piston. A coil biasing spring is placed within the cylinder between the piston and the fluid dispensing end of the cylinder. One end of the spring is seated against the fluid dispensing end of the cylinder. The other end of the spring is seated against an adaptor section which transfers the biasing force of the spring evenly over the face of the fluid displacing seal.

REFERENCES:
patent: 928351 (1909-07-01), Wilkinson
patent: 1608275 (1926-11-01), Grier et al.
patent: 3290946 (1966-12-01), Pursell
patent: 3669111 (1972-06-01), Dubner
patent: 3881360 (1975-05-01), Jurado
patent: 3905521 (1975-09-01), Mead et al.
patent: 4063662 (1977-12-01), Drummond et al.
patent: 4064879 (1977-12-01), Leibinsohn

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