Methods, implantable medical leads, and related systems to monitor and limit temperature changes in proximty to electrodes
US10773073B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2016 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Sep 16, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36142
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A temperature sensor is included within a lead in proximity to distal electrodes. The temperature sensor measures temperature change at the electrode to tissue interface. Actions can be taken when the temperature exceeds a threshold due to heating from current induced by radio frequency energy from an MRI scan. The actions may include sending a signal via telemetry from the implanted device to an external device to produce an alarm to alert an MRI technician or to instruct the MRI scanner to alter the MRI scan. The actions may include activating a switch in the conduction path of an implanted lead to block some of the RF energy and/or to activate a shunt in the conduction path to divert some of the RF energy. The temperature sensor may be of various forms and may be mounted in various locations within the lead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.