Security maintenance for programmable pacer reprogramming
US4203447A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1978 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | Jun 19, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3727
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A counter functions in response to an oscillator to control generation of stimulating pulses in the demand mode, via an adjustable rate decoder. The rate decoder may be predetermined under the control of a dual input, a first of which is a magnetic enabling switch, and the second of which is a pulse width modulated magnetic transmission. Once the enabling switch is actuated, plural successive reprogramming bits are coupled to the pacer. Integral logic allows these bits actually to accomplish the programming alteration if and only if the predetermined number of bits occur during a predetermined interval. The reprogramming is further synchronized with the generation of stimulating pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.