EP 1539009 A4 20060419 - ELECTROSURGICAL GENERATOR
Title (en)
ELECTROSURGICAL GENERATOR
Title (de)
ELEKTROCHIRURGISCHER GENERATOR
Title (fr)
GENERATEUR ELECTROCHIRURGICAL
Publication
Application
Priority
US 0226544 W 20020821
Abstract (en)
[origin: WO2004030552A1] An electrosurgical generator (10) which provides a constant voltage and variable power output particularly suited for cutting arc formation at an active electrode which exhibits a dynamic active surface area of varying geometry. Essentially constant voltage-based control is achieved through the utilization of a d.c. link voltage the level of which functions to establish the amplitude of the output of an RF resonant inverter. A dual loop feedback control is described wherein output voltage based control signals are slowly introduced at low gain, while link voltage motor-based controls are comparatively rapidly applied. Enhanced development of a controlling d.c. link voltage is achieved through the utilization of an input network incorporating a power factor correction stage.
IPC 1-7
IPC 8 full level
A61B 18/12 (2006.01); A61B 18/14 (2006.01)
CPC (source: EP)
A61B 18/1206 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00767 (2013.01); A61B 2018/00892 (2013.01); A61B 2018/1213 (2013.01)
Citation (search report)
- [X] US 2002019596 A1 20020214 - EGGERS PHILIP E [US], et al
- [A] EP 1065981 A1 20010110 - GYRUS MEDICAL LTD [GB]
- [A] US 6198642 B1 20010306 - KOCIECKI JOHN [US]
- [A] US 4739759 A 19880426 - REXROTH FREDERICK W [US], et al
- See references of WO 2004030552A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 2004030552 A1 20040415; AU 2002332596 A1 20040423; CA 2447875 A1 20040221; EP 1539009 A1 20050615; EP 1539009 A4 20060419; JP 2005536314 A 20051202
DOCDB simple family (application)
US 0226544 W 20020821; AU 2002332596 A 20020821; CA 2447875 A 20020821; EP 02807564 A 20020821; JP 2004541412 A 20020821