Implantable medical device having an accelerometer
US6044299A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1999 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Jun 24, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36542
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable medical device has a housing containing an accelerometer which detects vibrations of the housing. The accelerometer generates a vibration signal in response to the detected vibrations, which is supplied to a signal processing unit. The signal processing unit generates, for each of a number of predetermined frequency ranges, a parameter value indicative of a defined attribute of the vibration signal. The signal processing unit forms a ratio between any two of these parameter values, and emits at least one status value dependent on this ratio. The status value is uniquely indicative of a predetermined type or level of cardiac activity, and the status values can be used as a control signal for controlling therapy, such as cardiac stimulation, administered by the implantable medical device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.