METHOD AND APPARATUS FOR DETECTING ARRHYTHMIAS IN A SUBCUTANEOUS MEDICAL DEVICE
First Claim
Patent Images
7. A method of detecting a cardiac event in a medical device, comprising:
- sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector;
initiating charging of an energy storage device in response to the sensed cardiac signals; and
determining whether a predetermined number of morphologies associated with cardiac signals sensed along the first sensing vector and the second sensing vector during corresponding sensing windows are indicative of the cardiac event.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for detecting a cardiac event in a medical device that includes sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector, initiating charging of an energy storage device in response to the sensed cardiac signals, and determining whether a predetermined number of morphologies associated with cardiac signals sensed along the first sensing vector and the second sensing vector during corresponding sensing windows are indicative of the cardiac event.
133 Citations
32 Claims
-
7. A method of detecting a cardiac event in a medical device, comprising:
-
sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector; initiating charging of an energy storage device in response to the sensed cardiac signals; and determining whether a predetermined number of morphologies associated with cardiac signals sensed along the first sensing vector and the second sensing vector during corresponding sensing windows are indicative of the cardiac event. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A medical device for detecting a cardiac event and delivering a corresponding therapy, the device comprising:
-
a plurality of electrodes sensing cardiac signals, the plurality of electrodes forming a first sensing vector and a second sensing vector; an energy storage device; and a control unit to determine whether a predetermined number of morphologies associated with cardiac signals sensed along the first sensing vector and the second sensing vector during corresponding sensing windows are indicative of the cardiac event and initiating charging of the energy storage device in response to the cardiac event being indicated. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A medical device for detecting a cardiac event and delivering a corresponding therapy, the device comprising:
-
means for sensing cardiac signals from a plurality of electrodes; means for initiating charging of an energy storage device in response to the sensed cardiac signals; and means for determining, during charging of the energy storage device, whether a morphology of a signal associated with cardiac signals sensed during a sensing window is indicative of the cardiac event. - View Dependent Claims (1, 2, 3, 4, 5, 6, 30, 31, 32)
-
-
32-1. The device of claim 29, further comprising:
-
means for aborting the charging of the energy storage device in response to morphologies of cardiac signals sensed during a predetermined number of a first plurality of predetermined sensing windows not corresponding to the cardiac event; and means for determining, in response to cardiac signals sensed during sensing windows of a second plurality of sensing windows, whether state transition requirements are satisfied, the state transition requirements being associated with morphologies of cardiac signals sensed during the sensing windows of the second plurality of sensing windows.
-
Specification