Self-driven pump assembly and method of operation

Details Self-driven pump assembly and method of operation Self-driven pump assembly and method of operation

1982-09-22

1984-10-02

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604896, A61M 500

Patent

active

044745753

ABSTRACT:
A pump assembly particularly useful as an infusor for parenteral administration of a small amount of a therapeutically active substance for a prolonged period of time at a substantially constant rate comprising a fluid imbibing pump mounted within a receptacle into which actuating fluid may be charged. The active agent is dispensed from the pump after the pump is exposed to the fluid. Means to vary or stop the pump by obdurating all or a portion of the exterior surface of the pump can also be provided. Variation in flow rates can also be obtained by changing the composition of the actuating fluid.

REFERENCES:
patent: 3604417 (1971-09-01), Stolzenberg et al.
patent: 3796217 (1974-03-01), Arlen
patent: 3987790 (1976-10-01), Eckenhoff et al.
patent: 4340048 (1982-07-01), Eckenhoff

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