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<http://webisa.webdatacommons.org/prov/256815008>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/306651300> .
<http://webisa.webdatacommons.org/306651300>	<http://www.w3.org/ns/prov#value>	"The present invention relates generally to surgical instruments and, more particularly, to an obturator for use in conjunction with one or more trocars for penetrating an anatomical cavity of a patient to provide communication with the cavityduring a surgical procedure.BACKGROUND OF THE INVENTIONEndoscopic surgery is a significant method of performing surgical operations and has become the surgica" .
<http://webisa.webdatacommons.org/306651300>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .