Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2008-02-28
2011-10-18
Gedeon, Brian T (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
C600S323000, C600S324000
Reexamination Certificate
active
08038626
ABSTRACT:
A medical device system for sensing cardiac events that includes a plurality of electrodes sensing cardiac signals utilized to identify a cardiac event, a plurality of light sources capable of emitting light at a plurality of wavelengths, and a detector to detect the emitted light. A processor determines a plurality of light measurements in response to the emitted light detected by the detector, determines changes in perfusion in response to first changes in the plurality of light measurements in a direction indicative of a decrease in blood oxygenation and second changes in a direction indicative of a decrease in blood volume, and adjusts delivery of therapy by the device in response to the determined loss of perfusion.
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International Search Report, PCT/US2008/055348, Jun. 26, 2008, 5 Pages.
Carney James K.
Cinbis Can
Gedeon Brian T
Medtronic Inc.
Soldner Michael C.
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