Dual mode programmable cardiac pacer.

摘要

There is provided a programmable pacer which is ad apted to be programmed from an external source in either a slow program mode, wherein the external source is a simple magnet, or a fast program mode wherein the external programming signals are generated automatically and comprise a constant magnetic signal along with a modulated relatively high frequency magnetic signal. The pacer has means (40, 110) for receiving both fast and slow type program signals and means (48, 100, 104) for processing the received program signals, whether of the fast or slow type, to derive control signals therefrom when the program signals conform to a predetermined program arrangement.