Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Reexamination Certificate
2007-05-22
2007-05-22
Layno, Carl (Department: 3766)
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
C607S034000, C607S004000, C320S136000
Reexamination Certificate
active
10877215
ABSTRACT:
A method and apparatus for measuring battery depletion in an implantable medical device is presented. The apparatus includes first and second switch pairs disposed in series between the battery and a load, and connected in a parallel arrangement with respect to one another. A capacitor is connected in a first polarity between the battery and the load when only first and fourth switches are closed and in a second polarity when only second and third switches are closed. A comparator circuit causes the switches to reverse the capacitor's polarity based on a comparison of the voltage drop across the capacitor to a threshold value. A counter counts the number of times the capacitor reverses polarity, which is proportional to the amount of charge transferred from the battery during its lifetime in the device and indicative of the battery's level of depletion.
REFERENCES:
patent: 3895284 (1975-07-01), Schweizer et al.
patent: 5405363 (1995-04-01), Kroll et al.
patent: 5458624 (1995-10-01), Renirie et al.
patent: 5534015 (1996-07-01), Kroll et al.
patent: 6167309 (2000-12-01), Lyden
patent: 6169673 (2001-01-01), McIntyre et al.
patent: 2001/0034541 (2001-10-01), Lyden
patent: 2002/0140404 (2002-10-01), Lyden
patent: 0 647 455 (2001-07-01), None
patent: WO 99/14612 (1999-03-01), None
Neder Charles
Weaver Lyle
Wong Louis
Gedeon Brian T.
Layno Carl
Mitchell Steven M.
Pacesetter Inc.
LandOfFree
Method and apparatus for measuring battery depletion in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for measuring battery depletion in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring battery depletion in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3721901