HYDRAULICALLY ACTUATED PUMP FOR FLUID ADMINISTRATION

摘要

A fluid delivery device comprises a hydraulic pump chamber having a hydraulic fluid. A fluid reservoir is coupled to the hydraulic pump chamber and is configured to contain a fluid deliverable to a patient. A first actuator is coupled to the hydraulic pump chamber and is configured to pressurize the hydraulic pump chamber and configured to transfer energy through the hydraulic pump chamber to the fluid reservoir. A second actuator is coupled to the hydraulic pump chamber and is configured to pressurize the hydraulic pump chamber and configured to transfer energy through the hydraulic pump chamber to the fluid reservoir.

主权项

1. A hydraulically actuated fluid delivery system for sustained delivery of a liquid component, comprising:
a pump chamber, and a fluid storage chamber having an orifice and being functionally connected to said pump by a moveable barrier; a hydraulic fluid reservoir for storing a high viscosity fluid, said reservoir being connected to said pump chamber via a restrictor capable of controlling the rate of flow of the high viscosity fluid, and an actuator functionally connected to said hydraulic fluid reservoir to cause said hydraulic fluid to flow into said pump chamber through said restrictor, thereby expanding the volume of said pump chamber, displacing said moveable barrier and causing a quantity of said liquid component stored in said fluid storage chamber to be delivered at a sustained rate.