Implantable lead and sensor
US5275171A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1990 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Aug 6, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/056
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A physiological sensor forms an integral part of an implantable stimulation/sensing lead used with a medical device, such as a pacemaker. The stimulation/sensing lead includes a tip electrode to which a distal end of a first conductor is connected. The sensor is inserted in series with respective portions of a second conductor. A distal end of the second conductor/sensor is connected to the tip electrode. Operation of the stimulation/sensing lead occurs unipolarly through the first conductor only, with a signal return path being provided through the tip electrode and conductive body fluids. The sensor does not form part of the electrical circuit to the tip electrode, and there are no electrical connections or breaks in the insulation along the entire length of the first conductor. Electrical contact with the sensor is achieved during a time window when the stimulation/sensing lead is not being used by applying an appropriate operating signal, and measuring the resultant output signal, at the proximal ends of the first and second leads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.