发明名称 |
IMPROVED SAFETY CRYOTHERAPY CATHETER |
摘要 |
Improved devices, systems and methods for inhibiting hyperplasia in blood vessels provide controlled and safe cryotherapy treatment of a target portion within a body lumen of a patient. Efficacy of endoluminal cryogenic cooling can be enhanced by limiting cooling of target tissues using a thermal barrier disposed between a dual balloon cryotherapy catheter (16). Containment of both balloons (22, 24) can be monitored by applying a vacuum within a space between the first and second balloons, and by coupling the vacuum space to a fluid shutoff so as to inhibit flow of cryogenic fluid in response to a change in the vacuum space. Controlled cooling of the vessel can be improved by use of a nebulizer in fluid communication with a cryogenic liquid supply lumen and a gas supply lumen. |
申请公布号 |
WO0207628(A2) |
申请公布日期 |
2002.01.31 |
申请号 |
WO2001US21363 |
申请日期 |
2001.07.03 |
申请人 |
CRYOVASCULAR SYSTEMS, INC. |
发明人 |
WILLIAMS, RONALD;WILLIAMS, RICHARD, S.;JOYE, JAMES, D.;HOLLAND, TIMOTHY, D. |
分类号 |
A61B17/00;A61B17/22;A61B18/02;A61B18/12;A61F7/12;A61M25/00;F25D3/10 |
主分类号 |
A61B17/00 |
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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