Tiny Heart Pacemaker-Model of a heart, left, shows tiny pacemaker in right ventricle or chamber. The pacemaker, powered with either chemical batteries or nuclear energy sources, has no wires as do other devices. In a woman's hand, right, the pacemaker is scarcely larger that the end of a pencil eraser.
Digital Commonwealth — Boston Public Library

Tiny Heart Pacemaker-Model of a heart, left, shows tiny pacemaker in right ventricle or chamber. The pacemaker, powered with either chemical batteries or nuclear energy sources, has no wires as do other devices. In a woman's hand, right, the pacemaker is scarcely larger that the end of a pencil eraser.

Associated Press · [ca. December 1970]

CC0 — Public Domain
Digital Commonwealth — Boston Public Library

[Information from item housing] Heart + Heart Surgery

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