Peter J. Littrup,Alexei V. Babkin,Robert V. Duncan,Pramod Kerkar,Sergey T. Boldarev
申请号：
US12018403
公开号：
US08591503B2
申请日:
2008.01.23
申请国别(地区):
US
年份:
2013
代理人:
摘要：
A gas-based cryotherapy probe is provided with a shaft having a closed distal end adapted for insertion into a body. A supply conduit is disposed longitudinally within the shaft for flowing gas towards the distal end, and a return conduit is disposed longitudinally within the shaft for flowing gas from the distal end. The gas is maintained at a lower pressure within the return conduit than in the supply conduit. A heat exchanger is disposed within the shaft in thermal communication with the supply conduit and return conduit to exchange heat from gas in the supply conduit to gas in the return conduit. A vacuum jacket is adapted to provide thermal isolation of the heat exchanger from the shaft.
