Programmable implantable pump design

摘要

A programmable implantable pump is disclosed. The pump includes an implantable pump and a hermetically sealed module. The module provides 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 pressure of the fluid, electronics for analyzing the pressure information and determining the flow rate of the fluid, and a mechanism for physically altering the flow rate. 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 method of dispensing a fluid from a programmable pump implanted in a patient comprising:
dispelling a fluid from a first chamber in a constant flow module, through a first opening, into a valve block, and from the valve block through a second opening in fluid communication with a catheter; and operating a motor in a control module to vary an extent which a tapered distalmost end of a valve extends within a flow path of the fluid through the valve block, the valve being connected to the motor by a valve stem, wherein a bellows surrounding a portion of the valve prevents the fluid from contacting the motor.