Spinal cord stimulator system
US11704688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2020 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Apr 14, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3752
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wireless charger system for inductively charging a rechargeable battery of an implantable pulse generator (IPG) implanted in a human body is provided. A charging coil in the charger is wirelessly coupled to a receiving coil of the IPG to charge the rechargeable battery. An end-of-charge (EOC) circuit continuously monitors the reflected impedance from a reflected impedance sensor and determines the end of charge when a predetermined pattern of the reflected impedance corresponding to an EOC signal from the IPG is received.Advantageously, receiving the EOC signal through the charging coil eliminates the need to provide a separate communication circuit in the IPG that communicates with the charger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.