About: http://webisa.webdatacommons.org/113664325

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	Thus, in accordance with the present invention, instruments such as stylets and obturators and disc penetrating needles are inserted in a cannula which functions as a guide for the other instruments.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk