Constant pressure implantable pump reservoir

Details Constant pressure implantable pump reservoir Constant pressure implantable pump reservoir

1990-06-01

1991-09-03

Hirsch, Paul J.

Surgery

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

Treating material introduced into or removed from body...

128DIG12, A61M 3700

Patent

active

050450646

ABSTRACT:
An implantable device uses shape memory alloy (SMA) as the driver to compress a reservoir thereby providing a constant pressure source fluid delivery device. The SMA may form either the reservoir itself by appropriate shaped sheets or it may form bands around a flexible reservoir member. The reservoir may also be formed of rigid members pivoted or clamped using SMA actuators to bias the rigid members together.

REFERENCES:
patent: 3677444 (1972-08-01), Merrill
patent: 4692151 (1987-09-01), Blackman
patent: 4820273 (1989-04-01), Reinicke
patent: 4904239 (1990-02-01), Winchall et al.
patent: 4909790 (1990-03-01), Tsujikawa et al.
patent: 4915693 (1990-04-01), Hassel
patent: 4969873 (1990-11-01), Steinbach et al.

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