Welch Allyn, Inc. is an American manufacturer of medical devices and patient monitoring systems. Headquartered in Skaneateles Falls, New York, it was family-owned until it was acquired in 2015 by Hillrom for $2 billion. Hillrom was purchased by Baxter International in 2021.
Welch Allyn was founded in 1915 in Auburn, New York by Dr. Francis Welch and inventor William Noah Allyn. The two formed a partnership and developed the first hand-held, direct-illuminating ophthalmoscope and convinced Allyn, a medical instruments salesman, to form a partnership. The company moved to Skaneateles Falls in 1953, where it is still headquartered today. In 2019, Welch Allyn was awarded a $100m contract to supply the United States military with patient monitoring supplies.