Self-actuated implantable pump

Details Self-actuated implantable pump Self-actuated implantable pump

1987-05-20

1989-03-21

Pellegrino, Stephen C.

Surgery

Controlled release therapeutic device or system

Implanted dynamic device or system

604132, 604185, A61M 500

Patent

active

048139513

ABSTRACT:
An implantable pump, actuated by the patient in whom the pump is implanted, to provide pain relief and/or other therapeutic benefits. There is disclosed a fully implantable pump system, including a reservoir for holding fluid, a septum by which the reservoir is periodically refilled, and a resilient pump chamber responsive to manual pressure, for delivering limited amounts of the fluid through a catheter to a specific location within the body of the patient. Alternative embodiments disclosed include designs incorporating "windkessel-like" devices for controlling discharge of the fluid to the specific location to occur over extended time periods at relatively constant flow rates.

REFERENCES:
patent: 4193397 (1980-03-01), Tucker et al.
patent: 4258711 (1981-03-01), Tucker et al.
patent: 4329985 (1982-05-01), Bonchek
patent: 4544371 (1985-10-01), Dormandy, Jr. et al.
patent: 4588394 (1986-05-01), Schulte et al.
patent: 4634427 (1987-01-01), Hannula et al.
patent: 4710167 (1987-12-01), Lazorthes
patent: 4718894 (1988-01-01), Lazorthes
Perry Blackshear, "Implantable Drug-Delivery Systems," Scientific American, Dec. 1979, pp. 66-74.

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