Minute volume rate-responsive pacemaker using dual unipolar leads
US5562712A · kind A · utility
60Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1994 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Nov 25, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36521
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A rate-responsive pacemaker including a pulse generator for providing pacing current pulses at a controlled rate and two unipolar leads are provided. The pulse generator also applies a measuring current between one of the electrodes and a reference point in the pacemaker. The impedance between the other electrode and the reference point is measured across a lung of the patient. The impedance of the patient varies as a function of patient's pleural pressure, and therefore, the impedance thus represents the patient's minute volume. The rate of pacing is automatically adjusted in response to changes in the patient's minute volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.