Spinal cord stimulator system
US9878170B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Mar 10, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3752
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wireless charger for inductively charging a rechargeable battery of an implantable pulse generator (IPG) is provided. The charging coil in the charger is wirelessly coupled to a receiving coil of the IPG to charge the rechargeable battery. The alignment circuit continuously detects a reflected impedance of the charging coil through a reflected impedance sensor, and controls a vibrator to output a tactile signal which is indicative of the alignment of the charging coil to the receiving coil based on the detected reflected impedance. Advantageously, the tactile feedback to the patient provides an optimal way to indicate the extent of the charger's alignment with the IPG.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.