The first artificial pacemaker and first combinedpacemaker-defibrillator. He has been called the "Father of Biomedical Engineering in Canada",
He studied at the University of Manitoba, was the developer of the first two pacemakers.
I was born on May 21, 1919 inWinnipeg, Canada
Died on November 24, 1998
John was investigating the effects of radiofrequency heating on hypothermia
1941
He discovered that if the heart stopped beatingwhen its temperature dropped, it could be restarted artificially, using mechanical or electrical stimulation to make it beat.
In 1950, through research with dogs, Hopps invented the first pacemaker device, which was too large as for internal use
This research led tothe development of the first cardiac defibrillation machine, which was used by Hopps to start a dog's heart in 1949.
Pacemaker
Later, Wilson Greatbatch, an American electrical engineer, invented the first implantable cardiac pacemaker.
Pacemakers can help regulate the rhythm of the heart in cases of a slow,fast, or irregular heart rate, or a blockage in the heart's electricalconduction system
The pacemaker can stimulate the upper chambers of the heart (the atria), the lower chambers (the ventricles), or both
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