Gas transmission and monitoring device

Claim 1

A compact, self-contained flow and pressure regulator device having manual and automatic safety means for monitoring gas transmission from a source of compressed gas to a human body cavity during a peritoneoscopy, said regulator device comprising: a. a housing having an inlet and an outlet and a gas transmission conduit communicating therebetween, said inlet adapted for connection to a source of pressurized gas, said outlet adapted for connection to a gas delivery conduit; b. a selectively adjustable pressure regulator proximate the inlet end of said gas transmission conduit for modulating the pressure of said gas entering said conduit from said pressurized source; c. a limiting orifice for receiving said gas from said adjustable pressure regulator and reducing the flow of said gas to a predetermined rate; d. a control valve downstream of said adjustable pressure regulator and said limiting orifice for maintaining said gas below a predetermined rate of flow and pressure; e. a relief valve operatively associated with said gas transmission conduit between said orifice and said outlet for the escape of gas therethrough when the gas in said conduit exceeds a predetermined maximum pressure or flow rate, said relief valve opening in response to a pressure and flow rate which is higher than the values maintained by said control valve; f. gauge means for indicating gas conditions in said gas transmission conduit; and g. valve means for selectively discontinuing the discharge of gas from said outlet.