Precision medication dispensing system.

摘要

A precision medication dispensing system comprising an implantable device (10). The device includes a medication reservoir (12), a pulsatile pump (24) and an absolute pressure transducer (70). The pumping pressure wave developed in the pumping chamber (60) is measured by the absolute pressure transducer (70) whose output is used to adjust the pulsing rate of the solenoid operated pump (24) so that the programmed time averaged rate of infusion of medication into the body is precisely maintained throughout all operating temperature and pressure conditions.