EP 0556284 A4 19940112 -
Publication
Application
Priority
US 60937390 A 19901105
Abstract (en)
[origin: WO9207621A1] A radiofrequency energy source (12) supplies electromagnetic energy to the applicator (14) which acts as an electrode. A control circuit (26) contains a comparator (42) which is connected to a temperature sensor (20) and a temperature reference device (44) for comparing the actual tissue temperature level with a desired temperautre level and provides control signals to the energy source (12) for controlling the output to the applicator. A second electrode (96) provides a current return for the heating current from applicator (14). A sheet or sheath of insulation material covers the applicator (14) insulating it from the tissue; the thickness of the sheet or sheath may be varied to provide uniform tissue heating along the length of the applicator.
IPC 1-7
IPC 8 full level
A61N 5/04 (2006.01); A61B 18/14 (2006.01); A61N 1/40 (2006.01)
CPC (source: EP)
A61B 18/1485 (2013.01); A61N 1/403 (2013.01)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 9207621A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
WO 9207621 A1 19920514; AU 9027191 A 19920526; CA 2095516 A1 19920506; EP 0556284 A1 19930825; EP 0556284 A4 19940112; JP H06501410 A 19940217
DOCDB simple family (application)
US 9108182 W 19911104; AU 9027191 A 19911104; CA 2095516 A 19911104; EP 92900026 A 19911104; JP 50092292 A 19911104