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公开(公告)号：US20140221991A1
公开(公告)日：2014-08-07
申请号：US14087947
申请日：2013-11-22
IPC分类号： A61B18/02
CPC分类号： A61B18/02 , A61B18/0218 , A61B2018/00529 , A61B2018/00547 , A61B2018/00577 , A61B2018/0262
摘要： A method of cooling a material including the steps of (i) providing a cryotherapy instrument, (ii) positioning a portion of the cryotherapy instrument adjacent the material to be cooled, and (iii) circulating a cryogenic fluid through the cryotherapy instrument under physical conditions near a critical point of a liquid-vapor system for the cryogenic fluid. The critical point defines a point in a phase diagram of the liquid-vapor system where molar volumes are substantially equivalent for liquid and gas, whereby vapor lock associated with cooling of the cryotherapy instrument is avoided.
摘要翻译： 一种冷却材料的方法，包括以下步骤：（i）提供冷冻治疗仪器，（ii）将冷冻治疗仪器的一部分定位在待冷却材料附近，以及（iii）在物理条件下使低温流体通过冷冻治疗仪器循环 在低温液体的液体 - 蒸汽系统的临界点附近。 临界点定义了液体 - 蒸气系统的相图中的一个点，其中摩尔体积对于液体和气体基本相当，从而避免了与冷冻治疗仪器的冷却相关的蒸汽锁定。
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公开(公告)号：US07410484B2
公开(公告)日：2008-08-12
申请号：US10757768
申请日：2004-01-14
IPC分类号： A61B18/18
CPC分类号： A61B18/02 , A61B18/0218 , A61B2018/00529 , A61B2018/00547 , A61B2018/00577 , A61B2018/0262
摘要： A gas-based cryotherapy probe is provided with a shaft having a closed distal end adapted for insertion into a body. A supply conduit is disposed longitudinally within the shaft for flowing gas towards the distal end, and a return conduit is disposed longitudinally within the shaft for flowing gas from the distal end. The gas is maintained at a lower pressure within the return conduit than in the supply conduit. A heat exchanger is disposed within the shaft in thermal communication with the supply conduit and return conduit to exchange heat from gas in the supply conduit to gas in the return conduit. A vacuum jacket is adapted to provide thermal isolation of the heat exchanger from the shaft.
摘要翻译： 基于气体的冷冻治疗探针设置有具有适于插入体内的封闭远端的轴。 供应管道纵向设置在轴内以使气体朝向远端流动，并且回流管道纵向设置在轴内以用于从远端流动气体。 气体在返回管道内比在供应管道中保持较低的压力。 热交换器设置在轴内，与供应管道和返回管道热连通，以将来自供应管道中的气体的热量与返回管道中的气体进行热交换。 真空夹套适于提供热交换器与轴的热隔离。
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公开(公告)号：US08591503B2
公开(公告)日：2013-11-26
申请号：US12018403
申请日：2008-01-23
IPC分类号： A61B18/02
CPC分类号： A61B18/02 , A61B18/0218 , A61B2018/00529 , A61B2018/00547 , A61B2018/00577 , A61B2018/0262
摘要： A gas-based cryotherapy probe is provided with a shaft having a closed distal end adapted for insertion into a body. A supply conduit is disposed longitudinally within the shaft for flowing gas towards the distal end, and a return conduit is disposed longitudinally within the shaft for flowing gas from the distal end. The gas is maintained at a lower pressure within the return conduit than in the supply conduit. A heat exchanger is disposed within the shaft in thermal communication with the supply conduit and return conduit to exchange heat from gas in the supply conduit to gas in the return conduit. A vacuum jacket is adapted to provide thermal isolation of the heat exchanger from the shaft.
摘要翻译： 基于气体的冷冻治疗探针设置有具有适于插入体内的封闭远端的轴。 供应管道纵向设置在轴内以使气体朝向远端流动，并且回流管道纵向设置在轴内以用于从远端流动气体。 气体在返回管道内比在供应管道中保持较低的压力。 热交换器设置在轴内，与供应管道和返回管道热连通，以将来自供应管道中的气体的热量与返回管道中的气体进行热交换。 真空夹套适于提供热交换器与轴的热隔离。
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