Patent ID: 8900155

Claim:
A non-invasive blood pressure monitoring system, comprising: an air channel having one or more inlet and exhaust ports to ambient air; an electronically controlled pump for inflating a cuff applied to a patient limb with air acquired through the one or more inlet and exhaust ports of said air channel; and a water tight sealed housing containing the electronically controlled pump and electronic circuitry inside the housing for processing signals used in deriving a measurement of patient blood pressure in conjunction with inflating and deflating said cuff, the inside of said water tight sealed housing also being sealed from said air channel preventing air and liquid acquired or expelled through said air channel from leaking into the inside of the housing and contacting said electronic circuitry; wherein the one or more inlet and exhaust ports of said air channel and said electronically controlled pump are isolated from said electronic circuitry inside said water tight sealed housing and the seal between one or more inlet and exhaust ports of said air channel and said water tight sealed housing results in said air channel providing an exclusive pathway for air and liquid being passed to and expelled from the electronically controlled pump without air or liquid leakage into the housing.