A cryosurgical probe having a probe head which is cooled by Joule-Thomson cooling, and is then used to freeze bodily tissue during a surgical procedure. A steerable catheter is connected between the probe head and a probe handle to enable the probe head to be guided with safety and precision along arteries...http://www.google.fr/patents/US5078713?utm_source=gb-gplus-shareBrevet US5078713 - Cryosurgical probe
