Method and apparatus for monitoring heart function in a subcutaneously implanted device
US7035684B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2003 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Jun 26, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3702
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A minimally invasive, implantable monitor and associated method for chronically monitoring a patient's hemodynamic function based on signals sensed by one or more acoustical sensors. The monitor may be implanted subcutaneously or submuscularly in relation to the heart to allow acoustic signals generated by heart or blood motion to be received by a passive or active acoustical sensor. Circuitry for filtering and amplifying and digitizing acoustical data is included, and sampled data may be continuously or intermittently written to a looping memory buffer. ECG electrodes and associated circuitry may be included to simultaneously record ECG data. Upon a manual or automatic trigger event acoustical and ECG data may be stored in long-term memory for future uploading to an external device. The external device may present acoustical data visually and acoustically with associated ECG data to allow interpretation of both electrical and mechanical heart function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.