Hemodynamically rate responsive pacemaker and method of automatically adjusting the escape and A-V intervals
US5024222A · kind A · utility
114Cited by
10References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1990 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Feb 21, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3682
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a rate responsive pacemaker, a physiological sensor is used to sense the physiological needs of the patient's heart and to control both the pacing rate and the A-V interval accordingly. A first adjustment means triggers the timing circuitry to adjust the stimulation rate to a slightly sub-optimal value of cardiac output. A second adjustment means adjusts the A-V interval until hemodynamics are optimized according to the physiological sensor. The improvement in hemodynamics due to the A-V adjustment allows a further decrease in the stimulation rate by the first adjustment means, thereby conserving the limited battery supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.