EP1570798A3

Gas flow control in gas-assisted electrosurgical unit

Abstract

A gas delivery apparatus (44) used in gas-assisted electrocoagulation temporarily reduces a gas flow rate in a flowpath (98) to an application (42) which applies the flow of gas and electrical energy to the tissue. The reduced gas flow rate reduces the possibilities of embolism. The back pressure in the flowpath and a user requested flow rate are control variables used to reduce the flow rate upon the occurrence of back pressure-related conditions and to increase the flow rate after the dissipation of those back pressure conditions.

EP1570798A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 25 April 2020, 6.4 years ago.

1 sheet

Sheet 1

Every citation, both ways

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
US4781175A	Cites	United States of America	DA	Search report	1
WO9835618A1	Cites	World Intellectual Property Organization (WIPO)	A	Search report	–

18 members in 9 offices

This recordMember, by publication datePriority claim

Priority claims9

Priority claims
Document	Office	Kind	Date
307293	United States of America	–	1999-05-07
30729399	United States of America	A	1999-05-07
30729399	United States of America	A	1999-05-07
00926379	European Patent Office (EPO)	A	2000-04-25
00926379	European Patent Office (EPO)	A	2000-04-25
00926379	–	–	–
307293	–	–	–
EP20000926379	–	–	–
US19990307293	–	–	–

Members18

Family members, oldest first
Document	Office	Kind
CA2370499A1	Canada	A1	2000-11-16
CA2514099A1	Canada	A1	2000-11-16
WO0067654A1	World Intellectual Property Organization (WIPO)	A1	2000-11-16
AU4491900A	Australia	A	2000-11-21
US6206878B1	United States of America	B1	2001-03-27
EP1176917A1	European Patent Office (EPO)	A1	2002-02-06
JP2002543872A	Japan	A	2002-12-24
AU760807B2	Australia	B2	2003-05-22
EP1570798A2	European Patent Office (EPO)	A2	2005-09-07
EP1176917B1	European Patent Office (EPO)	B1	2005-11-09
AT308932T	Austria	T	2005-11-15
ATE308932T1	Austria	T1	2005-11-15
DE60023876D1	Germany	D1	2005-12-15
EP1570798A3This record	European Patent Office (EPO)	A3	2006-04-26
CA2370499C	Canada	C	2006-06-06
ES2255494T3	Spain	T3	2006-07-01
DE60023876T2	Germany	T2	2006-07-20
JP4184612B2	Japan	B2	2008-11-19

10 legal events, as the office reported them to INPADOC

Over the term

Point at a mark for the event

Events

Legal events, newest first
	Event	Code
2009-01-07	Application deemed to be withdrawnWithdrawn18D	18D
2008-12-05	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA
2007-07-25	First examination report despatched17Q	17Q
2007-01-03	Designation fees paidAKX	AKX
2006-04-26	Designated contracting statesAK	AK
2006-03-10	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL
2005-09-07	Request for examination filed17P	17P
2005-09-07	Divisional application: reference to earlier applicationAC	AC
2005-09-07	Designated contracting statesAK	AK
2005-07-22	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI