Power supply for body implant and method for operation
US4143661A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1977 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Dec 12, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0001
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A power supply system to operate an implanted electric-powered device such as a blood pump. A secondary coil having a biocompatible covering is implanted to subcutaneously encircle either the abdomen or the thigh at a location close to the exterior skin. The secondary coil is electrically interconnected with an implanted storage battery and the blood pump. A primary coil of overlapping width is worn by the patient at a location radially outward of the secondary coil. An external battery plus an inverter circuit in a pack is attached to a belt having a detachable buckle connector which is conventionally worn about the waist. Efficient magnetic coupling is achieved through the use of two air-core windings of relatively large diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.