发明名称 |
Precooling system for Joule-Thomson probe |
摘要 |
A miniature refrigeration system and method of operation. A primary refrigerant is pressurized by a compressor to a relatively low pressure, for safety reasons. The compressed primary refrigerant is passed through a primary-to-secondary heat exchanger, to precool the gas mixture. The secondary side of the primary-to-secondary heat exchanger is cooled by a secondary refrigeration system. The primary refrigerant exiting the primary outlet of the primary-to-secondary heat exchanger passes to a primary Joule-Thomson expansion element where the high pressure gas is expanded to a lower temperature. This low temperature gas cools a heat transfer element mounted in the outer wall of the catheter or cryoprobe, to cool surrounding tissue. Return gas can flow back through a distal primary-to-primary heat exchanger to further cool the incoming high pressure gas mixture. A proximal primary-to-primary heat exchanger can be added between the primary-to-secondary heat exchanger and the primary compressor.
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申请公布号 |
US6530234(B1) |
申请公布日期 |
2003.03.11 |
申请号 |
US19980075374 |
申请日期 |
1998.05.07 |
申请人 |
CRYOGEN, INC. |
发明人 |
DOBAK, III JOHN D.;BROWN TERRY L.;GHAERZADEH KAMBIZ;YU XIAOYU |
分类号 |
A61B18/02;C09K5/04;F25B7/00;F25B9/00;F25B9/02;(IPC1-7):F17C7/02 |
主分类号 |
A61B18/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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