System and method for emulating a surface EKG using internal cardiac signals sensed by an implantable medical device
US7383080B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2003 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Dec 13, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/319
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surface electrocardiogram (EKG) is emulated using signals detected by the internal leads of an implanted device. In one example, the emulation is performed using a technique that concatenates portions of signals sensed using different electrodes, such as by combining far-field ventricular signals sensed in the atria with far-field atrial signals sensed in the ventricles or by combining near-field signals sensed in the atria with near-field signals sensed in the ventricles. In another example, the emulation is performed using a technique that selectively amplifies or attenuates portions of a single signal sensed using a single pair of electrodes, such as by attenuating near-field portions of an atrial unipolar signal relative to far-field portions of the same signal or by attenuating atrial portions of a cross-chamber signal relative to ventricular portions to the same signal. The surface EKG emulation may be performed by the implanted device itself or by an external programmer based on cardiac signals transmitted thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.