Pacing system with lead having a single conductor for connecting to pressure sensor and electrode
US5843135A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1997 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Oct 20, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36514
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pacing system is provided having a lead with a pressure transducer or other sensor, the lead being characterized by having only a single conductor connecting the pacemaker with the signals from the sensor and the signals to and from the lead tip electrode. A connecting circuit mounted in the lead near the distal end is powered by a low level alternating constant current square wave to provide multiplexed signals on the conductor. The lead connecting circuit comprises a switching device connected to a sensor, such as a piezoelectric pressure transducer, so that for positive current pulses delivered to the lead, the transducer output is added in series with any cardiac signal sensed by the tip electrode; while for negative currents the pressure transducer is isolated and only the tip electrode signal information is connected back to the pacemaker. The pacemaker contains processing circuitry for decoding the respective cardiac signals and pressure signals from the multiplexed signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.