System, method and apparatus for evaluating tissue temperature
US7048756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2003 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Dec 11, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0001
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Method, system and apparatus for monitoring target tissue temperatures wherein temperature sensors are configured as passive resonant circuits each, with a unique resonating signature at monitoring temperatures extending below a select temperature setpoint. The resonant circuits are configured with an inductor component formed of windings about a ferrite core having a Curie temperature characteristic corresponding with a desired temperature setpoint. By selecting inductor winding turns and capacitance values, unique resonant center frequencies are detectable. Temperature monitoring can be carried out with implants at lower threshold and upper limit temperature responses. Additionally, the lower threshold sensors may be combined with auto-regulated heater implants having Curie transitions at upper temperature limits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.