US 9,808,640 B2
Method and apparatus for discriminating tachycardia events in a medical device using two sensing vectors
Xusheng Zhang, Shoreview, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Apr. 10, 2014, as Appl. No. 14/250,040.
Prior Publication US 2015/0290468 A1, Oct. 15, 2015
Int. Cl. A61B 5/04 (2006.01); A61N 1/39 (2006.01); A61B 5/00 (2006.01); A61B 5/042 (2006.01); A61B 5/0452 (2006.01); A61B 5/046 (2006.01); A61B 5/0464 (2006.01)
CPC A61N 1/3987 (2013.01) [A61B 5/046 (2013.01); A61B 5/04011 (2013.01); A61B 5/0422 (2013.01); A61B 5/0464 (2013.01); A61B 5/04525 (2013.01); A61B 5/7207 (2013.01)] 35 Claims
OG exemplary drawing
 
13. A medical device for detecting a cardiac event, comprising:
a plurality of electrodes sensing cardiac signals, the plurality of electrodes forming a first sensing vector sensing a first interval of the cardiac signal during a predetermined time period and a second sensing vector simultaneously sensing a second interval of the cardiac signal during the predetermined time period;
a processor configured to
identify each of the first interval and the second interval as being one of shockable or not shockable in response to a first processing of the first interval and the second interval,
identify each of the first interval and the second interval as being one of shockable or not shockable in response to a second processing of the first interval and the second interval, the second processing being different from the first processing and comprising a beat-based analysis identifying individual beats within the first interval and the second interval, and
determine whether to deliver therapy for the cardiac event in response to identifying each of the first interval and the second interval as being one of shockable or not shockable in response to both the first processing of the first interval and the second interval and the second processing of the first interval; and
a therapy module configured to deliver therapy to treat the cardiac event based on identifying each of the first interval and the second interval as being shockable in response to both the first processing and the second processing.