MRI compatible programmable valve pump

Details MRI compatible programmable valve pump MRI compatible programmable valve pump

2008-07-25

2010-11-09

Bumgarner, Melba (Department: 3767)

Surgery

Controlled release therapeutic device or system

Implanted dynamic device or system

Reexamination Certificate

active

07828792

ABSTRACT:
An implantable drug delivery system utilizing a non-magnetic valve/accumulator metering assembly is disclosed. The solenoids of the prior art, which respond to magnetic fields, are replaced by Shape Memory Alloy (SMA) wires and associated control electronics. By exploiting the inherent characteristics of SMA wires, which can expand and contract based on their temperature, the movements required to actuate the metering assembly can be achieved. This configuration retains the benefits associated with the prior art, while eliminating the major drawback.

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International Search Report and Written Opinion dated Sep. 1, 2009.

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