Wireless power system
US9839732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2014 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Jul 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/23
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wireless power system capable of transmitting power through the skin over distances ranging from a few inches to several feet includes an external transmitting coil assembly and a receiving coil assembly. A transmitting resonant coil and a receiving resonant coil are constructed as to have closely matched or identical resonant frequencies so that the magnetic field produced by the transmitting resonant coil is able to cause the receiving resonant coil to resonate strongly also, even when the distance between the two resonant coils greatly exceeds the largest dimension of either coil. The receiving resonant coil then creates its own local time varying magnetic field, which inductively produces a voltage to provide power to an active implantable medical device or implantable rechargeable battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.