Method of detecting presence of implanted power transfer coil
US11660458B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2021 |
| Grant date | May 30, 2023 |
| Priority date | — |
| Expiry date | Jun 29, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/23
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus related to detecting the presence of a power transfer coil implanted in a patient are disclosed. According to the aspect, an external device of a medical implant system is provided, the external device having an external coil and processing circuitry. The processing circuitry is configured to monitor a resonance frequency associated with the external coil. When the resonance frequency changes as a distance between the external coil and an expected location of an internal coil, then the processing circuitry is configured to conclude that the internal coil has been detected. When the resonance frequency ramps up to a steady state value at a rate that falls below a rate threshold, then the processing circuitry is configured to conclude that the internal coil is connected to an internal load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.