Method and apparatus for detecting arrhythmias in a subcutaneous medical device
AssigneeMedtronic, Inc.
InventorsRaja N. GHANEM, Robert W. STADLER, Xusheng ZHANG
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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.
Claims20
A method of detecting a cardiac event in a medical device, comprising:
- sensing cardiac signals from a plurality of electrodes;
- initiating charging of an energy storage device in response to the sensed cardiac signals;
- and
- 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.
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.
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.
Dependencies are inferred from the claim text.