| 摘要 |
The cryoprobe assembly includes a cryoprobe and an outer sheath assembly detachably connected thereto. The cryoprobe includes: a Joule-Thomson nozzle; a high pressure gas supply line for supplying gas to the Joule-Thomson nozzle; a heat exchanger interposed between the high pressure gas supply line and the Joule-Thomson nozzle; a cryoprobe sheath containing the heat exchanger and Joule-Thomson nozzle, the cryoprobe sheath having an outer surface; and, a handle attached to the first sheath, the handle having a gripping portion directly graspable by an operator and a connecting portion. The outer sheath assembly includes an adapter covering substantially none of the gripping portion of the cryoprobe handle. The adapter is for attachment to the connecting portion. An outer sheath is connected to the adapter and surrounds the outer surface of the cryoprobe sheath wherein the outer sheath provides enhanced protection against any gas leaks.
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