| http://www.w3.org/ns/prov#value | - An insertion device including a cannula for sealing a perforation in flesh that forms a cavity in a body and for releasably securing to said body, comprising: an elongated cannula having a passageway, an inflatable balloon surrounding one end of said cannula, connecting means securing said balloon to said cannula, said connecting means extending radially outwardly from said cannula to increase the
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