About: http://webisa.webdatacommons.org/235653988

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 any of the variations described herein, an obturator (not shown) may be used to fill a lumen during advancement of the piercing member into tissue so that the lumen does not become blocked with tissue or other debris.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au