Patent ID: 8506521

Claim:
A method for delivering gas to an abdominal cavity, comprising the steps of: providing a cannula comprising: an elongate, tubular main body having a lumen; a thin, flat disc-shaped hub connected to a proximal end of said elongate, tubular main body; a central aperture formed in said thin, flat disc-shaped hub; said central aperture slideably receiving said proximal end of said elongate, tubular main body; an annular groove formed in an outer periphery of said thin, flat disc-shaped hub; a staple item of commerce in the form of a conventional baby bottle nipple having a radially-inwardly extending annular ridge formed therein; said conventional baby bottle nipple formed of a flexible and resilient material; said radially-inwardly extending annular ridge having a diameter slightly less than a diameter of said annular groove so that said annular groove releasably but snugly receives said radially-inwardly extending annular ridge; at least one sealable valve formed in said conventional baby bottle nipple; and an elongate hose adapted to provide fluid communication between a remote gas machine and an enclosed space defined by said conventional baby bottle nipple and said thin, flat disc-shaped hub when said conventional baby bottle nipple is attached to said thin, flat disc-shaped hub; and delivering gas under pressure to an abdominal cavity of a patient through said elongate hose, said enclosed space, and said lumen.