Adjustable implantable drug infusion system

Details Adjustable implantable drug infusion system Adjustable implantable drug infusion system

1989-07-18

1991-10-29

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604141, 604246, A61M 100

Patent

active

050612425

ABSTRACT:
A drug delivery system for implantation into a living body having a pressure actuated infusion pump and an adjustable flow regulator. The regulator comprises a body having a regulator cavity divided by a diaphragm into two chambers. One chamber serves as a pressure sensor and the other as a conduit through which fluid flows. The outlet from the conduit chamber can be sealed by diaphragm movement as a function of pressure increase or the flow restricted. The outlet itself is mounted on an adjustable fitting that is movable relative to the diaphragm. The distance between the outlet and the diaphragm may be set as a calibration of the regulator.

REFERENCES:
patent: 4221219 (1980-10-01), Tucker
patent: 4299220 (1981-11-01), Dorman
patent: 4447224 (1984-05-01), DeCant, Jr. et al.
patent: 4486190 (1984-12-01), Reinicke
patent: 4515588 (1985-05-01), Amendolia
patent: 4838887 (1989-06-01), Idriss

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