Implantable cardiac stimulating device with optimized demand
US6317634A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Oct 20, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3708
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
It is important in cardiac pacing devices and systems to achieve efficient power utilization and conservation to extend the life of the battery cells, thereby extending the intervals between invasive medical procedures to replace components in the cardiac pacing system. A pacing supply design has cardiac pacing device comprises a battery, a discrete time switched capacitor pacing power supply comprising a charge transfer capacitor bank comprising at least two capacitors, and a pace output supply capacitor which can discharge current to the tissue of a patient. This invention involves the automatic control of a pacing supply design having a multiplicity of battery voltage multiplication factors and operating frequency settings. The pacing supply, voltage multiplier settings and operating frequency are automatically adjusted to compensate for changing pace output settings, load, cardiac cycle rate, and/or battery condition. The pacing supply voltage multiplier setting and frequency are varied over the useful life of the battery so that on average, from a beginning of life period for the battery to an end of life period for the battery, the voltage multiplier and the switching frequen…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.