Implantable cardiac monitoring and/or control devices having automatic sensitivity control, apparatus and methods therefor
US5339820A · kind A · utility
62Cited by
11References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1992 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Dec 22, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3704
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for automatic control of sensitivity, for implanted pacemaker, cardioversion and/or cardiac defibrillation device. Prior to the start of the cardiac cycle, the sensitivity threshold is set to a low value (Smax) so as to have maximum sensitivity. Upon detection of a ventricular complex, the amplitude is measured and the sensitivity threshold S is set to the value of that amplitude. The sensitivity threshold subsequently decreases in stages to return to the low value Smax.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.