| 发明名称 |
METHOD AND APPARATUS FOR ATRIAL ARRHYTHMIA EPISODE DETECTION |
| 摘要 |
A method and implantable medical device for determining noise in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window comprising a first portion and a second portion, determining a first derivative signal in response to the sensed cardiac signal within only one of the first portion and the second portion of the sensing window, determining a second derivative signal in response to the sensed cardiac signal within the one of the first portion and the second portion of the sensing window, determining whether an amplitude of the second derivative signal satisfies an amplitude threshold, and determining noise in response to the amplitude of the second derivative signal satisfying the amplitude threshold. |
| 申请公布号 |
US2016235320(A1) |
申请公布日期 |
2016.08.18 |
| 申请号 |
US201514695171 |
申请日期 |
2015.04.24 |
| 申请人 |
Medtronic, Inc. |
发明人 |
Sarkar Shantanu;Hansen Daniel L.;Neitzell Grant A. |
| 分类号 |
A61B5/04;A61B5/0464 |
主分类号 |
A61B5/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of determining noise in response to a cardiac signal in an implantable medical device, comprising:
sensing the cardiac signal; determining a sensing window within the sensed cardiac signal, the sensing window comprising a first portion and a second portion; determining a first derivative signal of the sensed cardiac signal within only one of the first portion and the second portion of the sensing window; determining a second derivative signal of the sensed cardiac signal within the one of the first portion and the second portion of the sensing window; determining whether an amplitude of the second derivative signal satisfies an amplitude threshold; and determining noise in response to the amplitude of the second derivative signal satisfying the amplitude threshold. |
| 地址 |
Minneapolis MN US |
