| 摘要 |
<p>Apparatus for gas-phase cryotherapy, characterised in that it comprises in combination: - a pressurised liquefied carbon dioxide bottle (1) mounted in a framework (2) facilitating its movement and its handling, a connector (4) extending in a dip tube (5) running over practically the entire length of the bottle being screwed onto the head of the bottle, - a flexible pipe (6) which withstands the liquefaction pressure of the carbon dioxide and is connected at one end to the said connector and, at the other end, to a system (7) for pressure-reduction and ejection of the gasified carbon dioxide, - the said pressure-reduction and ejection system being composed of a valve actuated by an external control lever, the chamber located downstream with respect to this valve extending in an outlet tube having a section with small diameter so that, because of the inherent speed of the gas passing through it and expanding therein, practically no solid carbon dioxide is formed, - the said outlet tube being equipped with means for changing the temperature, pressure and dimensions of the gaseous carbon dioxide jet sprayed onto the region of the patient to be treated. <IMAGE></p> |
