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  U.S. Department of Health and Human Services | National Institutes of Health

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Innovation and Invention: NIH and Prosthetic Heart ValvesImage Removed

President Johnson chats with a young patient at NIH’s Clinical Center after signing a health research bill.  Dr. Andrew “Glenn” Morrow, second from right behind the President, was the Chief of the Clinic of Surgery when it was established in 1953.Image Added

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Photograph courtesy of The U.S. National Library of Medicine, Jerry Hecht Photographer

The valves in your heart open millions of times a year. A damaged valve limits the flow of blood and oxygen to your body and makes your lungs work harder. Like nearly 80,000 people in the United States each year, you may need surgery to replace a damaged valve. This exhibition describes the discoveries that led to the heart-lung machine and open heart surgery, the number of experimental replacement valves that were invented and implanted, the role that NIH played in the 1960s and 70s in developing and testing these medical devices, and the public safety and regulatory responsibilities that were entrusted to the FDA. These histories are more than timelines of material sciences, engineering, and technology—they are also very personal stories of dedicated healers searching for solutions to heart ailments.


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Siemens 1-A Electron Microscope

This Siemens 1-A Electron Microscope was used for over three decades by Dr. Albert Kapikian, NIAID.  The instrument was used to detect and characterize various viruses. 

See the Siemens Microscope at its exhibit site located in Building 50.


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Charles Darwin
Photograph of Charles Darwin

Formally titled “Rewriting the Book of Nature: Charles Darwin and the Rise of Evolutionary Theory,” the exhibit describes the Charles Darwin’s life and the fortunes of the theory of evolution by natural selection.

Charles Darwin Website
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