| 摘要 |
<p>An insulated, compact, mobile cryosurgical instrument (11) is provided that has no moving parts in contact with a liquefied gas coolant retained in an insulated container. Upon interrupting normal venting from the container, the liquefied gas coolant will build up a pressure in the container which may be increased by a squeeze pressure device (35). That pressure will cause the liquefied gas coolant to spray from a nozzle (44) until normal venting is restored.</p> |
