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2. 发明授权

US06802838B2 Devices and methods for directed, interstitial ablation of tissue 有权
标题翻译：用于定向，间质消融组织的装置和方法
公开(公告)号：US06802838B2
公开(公告)日：2004-10-12
申请号：US10127382
申请日：2002-04-22
申请人： Marvin P. Loeb , L. Dean Crawford , James W. Pergl , Randy P. Graham
发明人： Marvin P. Loeb , L. Dean Crawford , James W. Pergl , Randy P. Graham
IPC分类号： A61B1820
CPC分类号： A61B18/24 , A61B2018/00023 , A61B2018/2005 , A61B2018/2277
摘要： The invention relates to a catheter device including an optical fiber whose distal end is disposed within a hollow tube with a sharp or syringe shaped distal end, which may be inserted into tissue. The distal end of the optical fiber and the hollow tube are configured so as to emit, by refraction (total internal reflection) or reflection from a metal surface, laser energy at an angle of about 80° to about 90° relative to the longitudinal axis of the optical fiber and hollow tube. A first fluid channel within the distal end portion of the tube enables fluid to be infused to cool the distal end of the tube and to cool and clean the emission face of the optical fiber. A second, relatively larger diameter fluid channel in the tube enables the fluid, flowing through said first channel along with hot gasses from the vaporization of tissue, to exit the device through a second port in the tube, away from the tissue being treated. A vacuum can be applied to the second fluid channel to more effectively remove the infused, cooling fluid and hot gasses from the tissue being treated. Alternatively, the tube can incorporate a distal end portion which can be articulated to allow the insertion of the device into tissue perpendicular to the tissue's surface, from which laser energy can be emitted forwardly.
摘要翻译：本发明涉及一种导管装置，其包括光纤，其远端设置在具有尖锐或注射器形状的远端的中空管内，该中空管可插入组织中。光纤的远端和中空管被配置为通过折射（全内反射）或来自金属表面的反射而发射相对于纵向轴线大约80°至大约90°的角度的激光能量的光纤和中空管。在管的远端部分内的第一流体通道使流体能够被输注以冷却管的远端并且冷却和清洁光纤的发射面。管中的第二个相对较大直径的流体通道使得能够流过所述第一通道以及来自组织蒸发的热气体的流体通过管中的第二端口远离被处理的组织离开装置。可以向第二流体通道施加真空，以更有效地从被处理的组织中更清除地从输送的冷却流体和热气中去除。或者，管可以包括远端部分，其可被铰接以允许将装置插入垂直于组织表面的组织中，激光能量从该组织的表面向前发射。

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