Evolution of the pacemaker

A series of pacemakers from the 1960s to the 1990s (top left to bottom right) demonstrating the remarkable progress in the miniaturization of the pacemaker. Since 1960 the weight of the pacemaker has decreased from 170 to less than 20 grams.

Canadian Heritage Information Network
1965 - 1995
994.007.024a; 994.007.038; 994.007.029; 994.0
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