3669120 is referenced by 43 patents and cites 5 patents.

A Pacemaker of the demand type having an output control circuit arranged to control the produced pace impulses in such a manner that the amplitude of each impulse is slightly less than that of the preceding impulse. When the amplitude has decreased below the threshold value so that a heart impulse fails to occur within a predetermined period, a reset circuit will cause another pace impulse to be produced having a given initial amplitude.

Title
Device for starting or stimulating heart contractions
Application Number
05/053,557
Publication Number
3669120
Application Date
July 9, 1970
Publication Date
June 13, 1972
Inventor
Nielsen Lars Stig
Assignee
Christian Rovsing
IPC
A61n 01/36
A61N 01/365
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