Enslaved active implantable medical device with reduced power consumption
US5766228A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Oct 11, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36542
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An active implantable medical device, particularly a rate responsive cardiac pacemaker having reduced power consumption. The device has a first sensor to measure a parameter that is used to control at least one function of the device, particularly a cardiac stimulation frequency, and a first sensing circuit for receiving and processing the output signals delivered by the first sensor. A switch is used to switch in and out of service the first sensing circuit according to the determined activity level of the patient bearing the device. The first sensing circuit determines a state of activity of the first sensor, this state being susceptible to take, according to predetermined criteria, a calculated value that is representative of a state of rest of the patient. The first sensing circuit is then switched according to the determined state of activity of the first sensor being established at the state of rest. Advantageously, a second sensor is used to measure a parameter representative of the activity of the patient and a second sensing circuit is used to receive and process the output signals delivered by this second sensor, such that the first sensing circuit is switched back in ser…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.