Christopher Paul HANCOCK,Malcolm WHITE,Patrick BURN,Peter CLEGG,Pallav SHAH
申请号：
US16659266
公开号：
US20200289199A1
申请日:
2018.06.01
申请国别(地区):
US
年份:
2020
代理人:
摘要：
An electrosurgical instrument for applying microwave energy to biological tissue, where the instrument is capable of freezing biological tissue in a region around a radiating tip portion and applying microwave energy to the frozen tissue. By freezing the region around the radiating tip portion, microwave energy radiated from the radiating tip portion can be transmitted through the frozen region with low losses and into tissue surrounding the frozen region. This enables the size of the treatment area to be increased without having to increase the amount of microwave energy delivered to the radiating tip portion. The instrument comprises a transmission line, a radiating tip, a fluid feed for conveying a tissue-freezing fluid, and a thermal transfer portion arranged to provide thermal communication between the tissue-freezing fluid and biological tissue in a treatment zone.
