Artificial heart valve, employing airfoil design and jeweled bearings, is now undergoing development and experimental trials in animals at the National Heart Institute. The valve, constructed entirely of rigid parts, presents less resistance to forward flow than most valves and wears well.
Digital Commonwealth — Boston Public Library

Artificial heart valve, employing airfoil design and jeweled bearings, is now undergoing development and experimental trials in animals at the National Heart Institute. The valve, constructed entirely of rigid parts, presents less resistance to forward flow than most valves and wears well.

[ca. September 1968]

CC0 — Public Domain
Digital Commonwealth — Boston Public Library

[Information from item housing] Heart + Heart Surgery

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