Pacer sense amplifier
US4596252A · kind A · utility
15Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 1985 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | May 6, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/902
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pacemaker sense amplifier circuit exhibiting a very high common mode rejection ratio for detecting intracardiac electrogram signals is disclosed. The circuit includes a sampling capacitor which is differentially charged by the intracardiac signal. The voltage stored on the sampling capacitor is periodically applied to a high input impedance differential voltage amplifier which is referenced to the battery ground. The signal is smoothed and reconstructed by a bandpass filter, and is applied to a comparator to generate a logic level pulse indicative of the occurrence of a cardiac depolarization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.