Detection of electromagnetic interference in a cardiac electrical signal by an implantable medical device
US10583306B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2017 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Nov 2, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3987
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable cardioverter defibrillator (ICD) starts a timer set to a time interval in response to a cardiac electrical signal crossing a noise threshold amplitude and resets the timer to the time interval in response to each crossing of the noise threshold amplitude by the cardiac electrical signal that occurs prior to the time interval expiring. A control circuit of the ICD determines a parameter of the behavior of the timer and identifies a sensed cardiac event as an electromagnetic interference (EMI) event based on the parameter. The ICD may detect EMI in response to the EMI event and withhold a tachyarrhythmia detection or therapy in response to EMI detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.