Cardiac monitoring system and method with multiple implanted transponders
US6592518B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Mar 28, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/076
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A plurality of radio frequency semi-passive transponders are attached to an animal's organ, such as the heart. Each semi-passive transponder may be attached to the surface of the organ or mounted on a stent that is implanted in a blood vessel of the organ. An interrogator periodically sends a signal to each semi-passive transponder which reacts by transmitting a reply signal. The interrogator processes the reply signals to derive information regarding activity of the organ. In one embodiment, the position of each semi-passive transponder is determined from the reply signals, thereby enabling information about organ movement and volume change to be derived. In another embodiment, data from a sensor on the semi-passive transponder is sent via the reply signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.