Patent ID: 7823457

Claim:
A pressure gauge for one way endoscopic devices comprising: a pressure-motion conversion element having a movable portion for receiving a fluid pressure and effecting a movement of the movable portion in the form of a piston or a membrane in response to the change thereof; and a force measuring element for measuring a force exerted thereon by the movement of the movable portion; wherein the pressure-motion conversion element and the force measuring element are formed as preferably separate components that can be pieced together, are separated in a fluid-tight manner, and can be coupled mechanically wherein the force-measurement element comprises a housing with an orifice, within which housing a force-measuring sensor and a positioning means are arranged opposite to each other for positioning the pressure motion conversion element in a predetermined position relative to the force measuring sensor, the pressure motion conversion element being inserted with the movable portion thereof through the orifice into a fixed position between the force measuring sensor and the positioning means in the housing when the pressure gauge is in an operative state, the movable portion being in contact with the force measuring sensor.