About: http://webisa.webdatacommons.org/166921786

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	There are several patents which disclose instruments used in laparoscopy and retractors for use in other types of surgery.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com