About: http://webisa.webdatacommons.org/309952995

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	This invention relates generally to surgical instruments, and more particularly to apparatus and methods used for providing an opening for inserting surgical instruments through tissue and into body cavities.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es