Method and apparatus for polarity reversal of consecutive defibrillation countershocks having back biasing precharge pulses
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 17, 1998
Grant Date -
N/A
app pub date -
Mar 4, 1996
filing date -
Sep 13, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for controlling an implantable cardioverter defibrillator utilizes a back-biasing precharge circuit to precondition the heart before delivery of a biphasic electrical countershock. The back-biasing precharge circuit delivers a low voltage pulse to the implantable defibrillation electrodes that is opposite to the polarity of the initial phase of the biphasic countershock. In the event of a continuing cardiac arrhythmia which is not successfully converted by a single countershock, subsequent countershocks are delivered having alternating polarities from the preceding countershock such that both the polarity of the back-biasing pulse and the biphasic countershock are reversed as compared to the immediately preceeding countershock.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully