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    • 93. 发明申请
    • METHOD AND DEVICE FOR LASER LITHOTRIPSY
    • 用于激光碎石的方法和装置
    • WO2010065638A2
    • 2010-06-10
    • PCT/US2009/066413
    • 2009-12-02
    • CERAMOPTEC INDUSTRIES, INC.CECCHETTI, LeonardoCECCHETTI, WalterNEUBERGER, Wolfgang
    • CECCHETTI, LeonardoCECCHETTI, WalterNEUBERGER, Wolfgang
    • A61B18/26A61B17/22A61B18/20A61N5/067A61B18/22A61B17/221
    • A61B18/26A61B18/24A61B2017/2215A61B2018/00029A61B2018/263
    • A system and method for the destruction/ablation of stones, calculi or other hard substances by means of laser energy is disclosed. As a consequence, several important medical treatments can be performed, especially lithotripsy. The system comprises a diode laser source emitting at least at one wavelength, one or more optical fibers which convey laser radiation to the treatment site and a liquid delivery system used for creating a liquid environment around the stones (calculi). The laser device emits at least one wavelength which is highly absorbed in the surrounding/covering medium, thus causing evaporation and cavitation effects that lead to stone/calculi destruction. Different radiation configurations may be used. In one embodiment continuous radiation is used to create sparkler-less plasma bubbles able to destroy hard substances. In another embodiment high peak power pulsed radiation is used. Wavelengths of 1470 nm, 1940 nm, or 1550 nm are preferred. Additionally it can be applied in combination with another wavelength with medium absorption in water such as 980 nm. In another embodiment a concentric double core fiber is used, in which the ignition radiation is guided in near single mode, inner core and the radiation used to maintain and enhance the pulse is guided into the surrounding second outer core. In another preferred embodiment, the use of multiple optical fibers allows for treating larger stones in a shorter time period. In another preferred embodiment, cooling liquid is supplied to the impact site to further reduce thermal heating of the stone, thus diminishing risks of tissue damage caused by stone fragment anchorage and thermal energy. With these safer and improved methods and system, enhanced lithotripsy treatments can be performed in a shorter treatment time, destroying a wider range of stones with less risk of tissue damage, and less patient and physician stress.
    • 公开了一种通过激光能量破坏/消融结石,结石或其他硬物质的系统和方法。 因此,可以进行一些重要的医疗治疗,特别是碎石术。 该系统包括发射至少一个波长的二极管激光源,将激光辐射传送到治疗部位的一个或多个光纤以及用于在结石(结石)周围产生液体环境的液体输送系统。 激光装置发射至少一种在周围/覆盖介质中被高度吸收的波长,由此引起蒸发和空化效应,从而导致石块/石块破坏。 可以使用不同的辐射配置。 在一个实施例中,使用连续辐射来产生能够破坏坚硬物质的无烟火的等离子体气泡。 在另一个实施例中,使用高峰值功率脉冲辐射。 1470nm,1940nm或1550nm的波长是优选的。 另外,它可以与另一种波长在中等吸收的水中组合使用,例如980 nm。 在另一个实施例中,使用同心双芯光纤,其中点火辐射在近单模中被引导,内芯和用于维持和增强脉冲的辐射被引导到周围的第二外芯中。 在另一个优选实施例中,使用多个光纤允许在较短的时间内处理较大的结石。 在另一个优选实施例中,将冷却液体供应到冲击部位以进一步减少对结石的热加热,从而减少由结石碎片锚固和热能引起的组织损伤的风险。 采用这些更安全和改进的方法和系统,可以在更短的治疗时间内执行增强型碎石治疗,破坏范围更广的结石,组织损伤风险更低,患者和医生的压力更小。