In 1957, notable science fiction author Robert A. Heinlein was asked to appear before a joint committee of the House and Senate after recovering from one of the earliest known carotid bypass operations to correct a blocked artery that was causing transient ischemic attacks; in his testimony, reprinted in the book Expanded Universe, he characterized the technology that made the surgery possible as merely one of a long list of spinoff technologies from space development.
Tang is not one of them.