Implantable medical device and electrical stimulation device with magnetic shield
US7945334B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2004 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Nov 29, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3787
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A rechargeable implantable medical device with a magnetic shield placed on the distal side of a secondary recharging coil to improve charging efficiency is disclosed. The rechargeable implantable medical device can be a wide variety of medical devices such as neuro stimulators, drug delivery pumps, pacemakers, defibrillators, diagnostic recorders, cochlear implants. The implantable medical device has a secondary recharging coil carried over a magnetic shield and coupled to electronics and a rechargable power source carried inside the housing. The electronics are configured to perform a medical therapy. Additionally a method for enhancing electromagnetic coupling during recharging of an implantable medical device is disclosed, and a method for reducing temperature rise during recharging of an implantable medical device is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.