Medical field detector and telemetry unit for implants
US5545187A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1995 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Feb 21, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/37223
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A combined telemetry and magnetic field detector unit for use in a medical implant includes control logic, a magnetic field indicator, a telemetry circuit containing a number of switches, and a coil unit. The control logic is arranged to operate the switches such that switching between the telemetry function and the magnetic field detection function of the combined unit is achieved so the coil unit is utilized for transmission of telemetry signals to and from a programmer as well as for magnetic field detection. For magnetic field detection, the coil unit, which consists of multiple parts, is connected by the control logic such that the parts respectively form a primary side and a secondary side of a pulse transformer, with the magnetic field indicator connected by the control logic to the pulse transformer's secondary side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.