Non-invasive cardiorespiratory monitor with synchronized bioimpedance sensing
US6647289B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Dec 6, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/352
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cardiorespiratory monitor that generates bioimpedance sensing signals that produce substantially no interference with bioimpedance signals generated by implanted devices. The monitor detects the bioimpedance signal generated by the implanted device, using a voltage detector or a telemetry circuit, for example. The monitor analyzes this detected signal to generate a bioimpedance sensing signal that will not interfere with the sensed signal. For instance, if the monitor produces a pulsed sensing signal, the pulses are delivered in an interval of the detected signal where no pulses are present. Similarly, if the monitor produces a high frequency AC sensing signal, the zero crossings of the AC sensing signal are positioned during the delivery of a pulse by the implanted device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.