| http://www.w3.org/ns/prov#value | - The present invention is a peritoneal cannula for positioning in a perforation in a body that includes a cannula holding and constriction assembly means which is axially movable along one end of the cannula and which cooperates with an inflatable balloon surrounding a disc at the other end to retain the cannula inv a predetermined position about a perforation in the flesh and in which the balloon
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