About: http://webisa.webdatacommons.org/120654248

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	In addition, the present invention provides a surgical cannula which has improved sealing means which is particularly well adapted to sealingly accommodate lateral and axial motion of a surgical instrument extending through the cannula.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es