Patent ID: 8202267
Filing Date: 2012-06-19
Classification: A61M,G16H

Abstract:
1. A device for infusing liquid to a body, comprising a single use disposable assembly including a source of infusion fluid, a delivery port to the body, and a pump coupled between the source of infusion fluid and the delivery port and having a pump chamber, a diaphragm retained about the periphery thereof to the disposable assembly and a piston centrally located on one side of the diaphragm, the piston extending to the pump chamber to vary the chamber volume; a multiuse assembly separable from the single use disposable assembly and including a piezoelectric arm retained at one end in the multiuse assembly and having an actuator member moving with the piezoelectric arm extending from the multiuse assembly to the other side of the diaphragm at the piston and a controller capable of programmable infusion rate and time sequences.