Atrial rate sensitive cardiac pacer circuit
US4298007A · kind A · utility
25Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1980 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Jul 21, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/368
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrical pacer device which responds to cardiac demand so as to alter the cardiac output in a fashion to satisfy that demand. Changes in the fundamental period of the atrial electrical cycle are detected and averaged over a predetermined time interval and the resulting control signal is used to raise and lower the ventricular heart rate to increase and decrease the aforesaid cardiac output. At the same time, means are provided for continuously driving the ventricular rate toward a predetermined lower rate (the at rest rate) on a time cycle which is significantly longer than the above-mentioned predetermined time interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.