Method and apparatus for applying energy to biological tissue including the use of tumescent tissue compression
    41.
    发明授权
    Method and apparatus for applying energy to biological tissue including the use of tumescent tissue compression 有权
    用于向生物组织施加能量的方法和装置,包括使用肿胀组织压缩

    公开(公告)号:US07396355B2

    公开(公告)日:2008-07-08

    申请号:US10872646

    申请日:2004-06-21

    IPC分类号: A61B18/18

    摘要: An electrode catheter is introduced into a hollow anatomical structure, such as a vein, and is positioned at a treatment site within the structure. Tumescent fluid is injected into the tissue surrounding the treatment site to produce tumescence of the surrounding tissue which then compresses the vein. The solution may include an anesthetic, and may further include a vasoconstrictive drug that shrinks blood vessels. The tumescent swelling in the surrounding tissue causes the hollow anatomical structure to become compressed, thereby exsanguinating the treatment site. Energy is applied by an electrode catheter in apposition with the vein wall to create a heating effect. The heating effect causes the hollow anatomical structure to become molded and durably assume the compressed dimensions caused by the tumescent technique. The electrode catheter can be moved within the structure so as to apply energy to a large section of the hollow anatomic structure. In a further aspect, the location of the electrodes is determined by impedance monitoring. Also, temperature sensors at the treatment site are averaged to determine the site temperature.

    摘要翻译: 将电极导管引入到诸如静脉的中空解剖结构中,并且位于结构内的治疗部位。 将肿胀流体注射到处理部位周围的组织中,以产生周围组织的肿胀,然后压缩静脉。 溶液可以包括麻醉剂,并且还可以包括收缩血管的血管收缩药物。 周围组织的肿胀肿胀导致中空的解剖结构变得压缩,从而使治疗部位脱垂。 能量通过电极导管与静脉壁一起施加以产生加热效果。 加热效果使得中空的解剖结构变得模制并且持久地承受由肿胀技术引起的压缩尺寸。 电极导管可以在结构内移动,以将能量施加到中空解剖结构的大部分。 在另一方面,通过阻抗监测确定电极的位置。 此外,将处理部位的温度传感器平均以确定现场温度。

    Power supply
    43.
    发明授权
    Power supply 失效
    电源

    公开(公告)号:US4945898A

    公开(公告)日:1990-08-07

    申请号:US379573

    申请日:1989-07-12

    IPC分类号: A61B17/22 B06B1/02 G10K15/04

    摘要: A pulsed power supply for providing power to a piezoelectric crystal. The power supply provides power to the piezoelectric crystal causing contraction of the crystal. Upon reaching a predetermined degree of contraction, the electrical voltage form the power supply is removed from the piezoelectric crystal by creating a short-circuit between the power supply and the crystal. Removal of electrical voltage from the crystal causes the immediate expansion of the crystal and a resulting energy wave.

    摘要翻译: 用于向压电晶体提供功率的脉冲电源。 电源为压电晶体提供电力,导致晶体收缩。 在达到预定的收缩程度时,通过在电源和晶体之间产生短路,使形成电源的电压从压电晶体去除。 从晶体中去除电压会导致晶体的立即膨胀和产生的能量波。