Winchell pursued his interest in medicine and invented several medical devices, including an artificial heart design and a portable blood plasma defroster for use in the field. While some of these inventions were patented, their commercial success and adoption remain debated and contested.

Winchell received a patent for an artificial heart, but the details and effectiveness of his design are debated. Some sources dispute his claim to have invented the first artificial heart, while others acknowledge his contribution to the field.

Winchell dedicated time and resources to humanitarian causes, working to improve healthcare and support children's welfare. He used his platform to raise awareness and advocate for important social issues.