Welch Allyn is an American brand of medical devices and patient monitoring systems. The company is part of Hill-Rom. Welch Allyn is not directly known to consumers. However, in hospitals it is one of the very best brands that is used. The quality of Welch Allyn is very high. In addition, the products are also very versatile. Several cuffs can be attached to the Welch Allyn blood pressure monitors, among other things. This means that both small babies and people with thicker arms and legs can reliably measure their blood pressure.