Variable flow infusion pump system

摘要

An implantable infusion pump system is disclosed. The pump system preferably includes an implantable pump and a programmable module. The module may provide for varying flow rates of fluid being dispensed from the pump or may provide for a constant flow rate of such fluid. In the case of varying flow rate capabilities, the module preferably includes one or more sensors to determine information relating to the flow rate, electronics for analyzing the flow rate information, and a mechanism for physically altering the flow rate. In certain embodiments, the module includes a hermetically sealed housing. Methods of dispensing a medicament to a patient utilizing such a system are also disclosed, as are variations of the pump system.

主权项

1. A programmable module for use with an implantable pump comprising:
a hermetic housing having a completely sealed interior, the interior including a first pressure sensor, a second pressure sensor, an actuation mechanism, a motor, an offset cam, and a flexible membrane; a valve unit including a double sided needle valve in contact with the flexible membrane, wherein operation of the motor and offset cam causes the flexible membrane to flex and the flexible membrane causes translation of the double sided needle valve.