Bi-ventricular heart stimulating device, system and method
US7215996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2002 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | May 24, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3682
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In an implantable heart stimulating device, system and method, electrical stimulation pulses are delivered to first and second ventricles of a heart with a variable time interval therebetween, and signals are sensed at two different positions in the heart, from which an impedance value is derived. A minimum value and a maximum value of the impedance value are determined during a heart cycle, and a relationship between the minimum and maximum values also is determined. The time interval is varied and the relationship is monitored over a number of heart cycles. The time interval is set so that the relationship satisfies a predetermined requirement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.