William Parry Murphy Jr. (November 11, 1923 – November 30, 2023) was an American physician and inventor of medical devices including collaborating on a flexible sealed blood bag used for blood transfusions.

He was the son of the American physician William Parry Murphy who shared the Nobel Prize in Physiology for Medicine in 1934,[1] and Harriett Adams, the first licensed female dentist in Massachusetts.

in 1947 from the University of Illinois and also studied physiologic instrumentation at the Massachusetts Institute of Technology from 1947 to 1948.

[3] Murphy married Barbara Eastham in 1943; they had three daughters and divorced in the early 1970s.

Lipps Coinventor He co-authored nearly 30 medical publications and helped to establish several professional organizations such as FIRST (For Inspiration and Recognition of Science and Technology), a non-profit group dedicated to inspiring young people's interest in science, technology and engineering, founded by his friend Dean Kamen.