Surgery – Truss – Pad
Patent
1992-03-31
1994-09-20
Kamm, William E.
Surgery
Truss
Pad
A61B 5046
Patent
active
053480210
ABSTRACT:
An atrial defibrillator reliably detects a depolarization activation wave of the heart and delivers cardioverting electrical energy to the atria of the heart in synchronism with a detected depolarization activation wave. The atrial defibrillator includes a first sensor for producing a first electrical output having a duration substantially equal to the duration of the depolarization activation wave sensed between a first pair of spaced apart locations of the heart. The atrial defibrillator further includes a second sensor for producing a second electrical output having a duration substantially equal to the duration of the depolarization activation wave sensed between a second pair of spaced apart locations of the heart. The spacing between the second pair of locations is greater than the spacing between the first pair of locations. A microprocessor is responsive to the first and second electrical outputs for providing an indication signal indicating the occurrence of the depolarization activation wave when the second electrical output is longer in duration than the first electrical output. A pulse generator coupled to the microprocessor applies electrical cardioverting energy to the atria of the heart in response to the indication signal.
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Adams John M.
Alferness Clifton A.
Infinger Kenneth R.
InControl, Inc.
Kamm William E.
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