| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine a freezing period and thawing period depending of the size of a therapy region, related to a therapy device used for cryotherapy and a cryotherapy planning device therefor. <P>SOLUTION: A cryotherapy device includes a gas supply/exhaust system (100), a control system (200) therefor, and a freezing probe system (300). The gas supply/exhaust system (100) supplies a freezing gas and a thawing gas to a probe (60) of the freezing probe system (300) to freeze and thaw the therapy region near the end of the probe (60) by the Joule-Thomson effect. The control system (200) controls the gas supply/exhaust system (100) and creates therapy plan data for the control. The therapy plan data include a freezing and thawing sequence to determine the freezing period and thawing period. The computer in the control system (200) determines the sequence. The sequence is determined depending on the therapy size of the lesion according to the freezing and thawing characteristics of the tissue. <P>COPYRIGHT: (C)2010,JPO&INPIT |
