LIQUID DELIVERY SYSTEM PARTICULARLY USEFUL AS AN IMPLANTABLE MICROPUMP FOR DELIVERING INSULIN OR OTHER DRUGS

摘要

A liquid delivery system, particularly useful as an implantable micro- pump for delivering insulin or other drugs, comprises a collapsible reservoir for the feed liquid to be delivered, which reservoir is enclosed by a rigid housing, a container for a drive liquid, and a pump selectively pumping the drive liquid either from the drive liquid container into the rigid housing between its inner face and the collapsible reservoir for pumping the feed liquid therefrom, or out of the rigid housing into the drive liquid container for refilling the collapsible reservoir with feed liquid.