Method and apparatus for communicating with implanted body function stimulator
US4539992A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1983 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Apr 25, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/37223
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An external command device and an internal decoding and verification device are used to non-invasively alter the operating parameters of a programmable device implanted in an animal body. Thus, physiological changes can be easily accommodated by the implanted device. In a preferred embodiment, pulse position modulation is used to externally encode the command information. A resulting string of current pulses generates voltage spikes (in the internal decoding device) through inductively coupled coils. Each incoming data bit is verified and the entire command word is verified. After verification, the decoded command is transferred to a command register for simultaneously altering the selected operating parameters. The internal receiver circuitry may conveniently utilize energy from the induced voltage spike, using passive components for forming an output suitable for processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.