System and method for adjusting automatic sensitivity control parameters based on intracardiac electrogram signals
US8265756B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2006 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Nov 13, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36507
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods are provided for use by an implantable medical device capable of automatically adjusting the sensitivity with which electrical cardiac signals are sensed within a patient, i.e. a device equipped with Automatic Sensitivity Control (ASC.) In a first example, ASC parameters are automatically adjusted by the device itself based on parameters derived from both R-waves and T-waves and further based on a detected noise floor. In a second example, a profile representative of the shape of cardiac signals is generated by the device. ASC parameters are then adjusted based on the profile. In various embodiments, histograms are used to determine sizes and shapes of the R-waves and T-waves via statistical prevalence techniques. The histograms are also employed to derive the aforementioned profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.