FRANCIS AMOAH,CHRISTOPHER PAUL HANCOCK,MARTIN JARMAN,NUWAN DHARMISIRI
申请号：
GB201308207
公开号：
GB2513872A
申请日:
2013.05.08
申请国别(地区):
GB
年份:
2014
代理人:
摘要：
Disclosed is electrosurgical apparatus comprising an RF signal generator, a delivery probe, a signal detector and a controller, whereby the controller uses the detected signal to monitor energy accumulated in the tissue and control the profile of each of the pulses to keep the average power supplied to the tissue below a target value. The pulse may be a composite pulse with an ON and OFF portions totalling pulse duration T, and a limit for the average power delivered (i.e. total energy delivered over the duration of the ON and OFF portions divided by the pulse duration) may be selectable by the operator. The ON portion may have multiple sub-portions of different voltages for different purposes, such as initiating and sustaining cutting. Each pulse may therefore be automatically controlled for pulse width and/or power supplied, so that the RF signal effectively responds intelligently to conditions at the probe tip during treatment.
