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172 条记录 (耗时 0.017 秒)

    Methods and apparatus for presbyopia treatment using a dual-function laser system
    61.
    发明申请
    Methods and apparatus for presbyopia treatment using a dual-function laser system 审中-公开
    使用双功能激光系统进行老花眼治疗的方法和装置

    公开(公告)号：US20040078030A1

    公开(公告)日：2004-04-22

    申请号：US10270617

    申请日：2002-10-16

    发明人： J. T. Lin

    IPC分类号： A61B018/20

    CPC分类号： A61F9/008 ,  A61B2018/2065 ,  A61F9/00808 ,  A61F9/00821 ,  A61F2009/00865 ,  A61F2009/00872 ,  A61F2009/00895

    摘要： Presbyopia is treated by a method which uses various lasers to remove a portion of the scleral tissue and increase the accommodation of the presbyopic patient's eye By changing the laser power density, fluency or spot size, a single laser device having dual-function of ablation and coagulation is proposed for minimum bleeding. Fiber-bundle coupled to a single fiber is presented to increase the power density of the laser for efficient tissue ablation New mechanisms of lens curvature change and lens anterior shift are proposed for the total accommodation. The preferred laser wavelength ranges from ultraviolet to infrared including (0.15-0.36) microns, (0.9-1.6) microns, (1.8-2.2) microns and (2.8-3.2) microns Both scanning and fiber delivered systems are proposed.

    摘要翻译： 老花眼通过使用各种激光去除巩膜组织的一部分并增加老花眼患者的眼睛的适应度的方法进行治疗通过改变激光功率密度，流畅度或光斑尺寸，具有消融双重功能的单个激光装置和 提出凝血用于最小出血。 提出了耦合到单个光纤的光纤束以增加激光器的功率密度以实现有效的组织消融。为总体调节提出了镜片曲率变化和镜片前移的新机制。 优选的激光波长范围从紫外到红外，包括（0.15-0.36）微米，（0.9-1.6）微米，（1.8-2.2）微米和（2.8-3.2）微米。提出扫描和光纤传输系统。

    Infrared laser catheter system
    62.
    发明授权
    Infrared laser catheter system 失效

    公开(公告)号：US5843073A

    公开(公告)日：1998-12-01

    申请号：US411581

    申请日：1995-03-29

    申请人： Edward Lawrence Sinofsky

    发明人： Edward Lawrence Sinofsky

    IPC分类号： A61B18/20 ,  A61B18/24 ,  A61B18/28 ,  A61B19/00 ,  G02B6/24 ,  G02B6/38 ,  G02B6/42 ,  A61N5/06

    CPC分类号： A61B18/24 ,  G02B6/4296 ,  A61B2018/2065 ,  A61B90/39 ,  G02B6/241 ,  G02B6/3878

    摘要： Laser energy produced by a laser operating in the mid-infrared region (approximately 2 micrometers) is delivered by an optical fiber in a catheter to a surgical site for biological tissue removal and repair. Disclosed laser sources which have an output wavelength in this region include: Holmium-doped Yttrium Aluminum Garnet (Ho:YAG), Holmium-doped Yttrium Lithium Fluoride (Ho:YLF), Erbium-doped YAG, Erbium-doped YLF and Thulium-doped YAG. For tissue removal, the lasers are operated with relatively long pulses at energy levels of approximately 1 joule per pulse. For tissue repair, the lasers are operated in a continuous wave mode at low power. Laser output energy is applied to a silica-based optical fiber which has been specially purified to reduce the hydroxyl-ion concentration to a low level. The catheter may be comprised of a single optical fiber or a plurality of optical fibers arranged to give overlapping output patterns for large area coverage.

    Infrared laser catheter system
    64.
    发明授权
    Infrared laser catheter system 失效
    红外线激光导管系统

    公开(公告)号：US5196004A

    公开(公告)日：1993-03-23

    申请号：US427251

    申请日：1989-10-25

    申请人： Edward L. Sinofsky

    发明人： Edward L. Sinofsky

    IPC分类号： A61B18/20 ,  A61B18/24 ,  A61B19/00 ,  G02B6/42

    CPC分类号： A61B18/24 ,  G02B6/4296 ,  A61B2018/2065 ,  A61B90/39

    摘要： Laser energy produced by a laser operating in the mid-infrared region (approximately 2 micrometers) is delivered by an optical fiber in a catheter to a surgical site of biological tissue removal and repair. Disclosed laser sources which have an output wavelength in this region include: Holmium-doped Yttrium Aluminum Garnet (Ho:YAG), Holmium-doped Yttrium Lithium Fluoride (Ho:YLF), Holmium-doped Yttrium-Scandium-Gadolinium-Garnet (HO:YSGG), Erbium-doped YAG, Erbium-doped YLF and Thulium-doped YAG. Laser output energy is applied to a silica-based optical fiber which has been specially purified to reduce the hydroxyl-ion concentration to a low level. The catheter may be comprised of a single optical fiber or a plurality of optical fibers arranged to give overlapping output patterns for large area coverage. In a preferred application for the removal of atherosclerotic plaque, a Holmium-doped laser operating in the wavelength range of from about 1.9 to about 2.1 micrometers is preferred. For removal of such plaque by a Holmium-doped laser, it has been found that the threshold energy density should be greater than about 0.6 joules/mm.sup.2 per pulse, and that the pulse width should be substantially less than about 83 milliseconds, and that the repetition rate should be in the range of from about 1 to about 10 Hertz.

    摘要翻译： 通过在中红外区域（约2微米）操作的激光产生的激光能量通过导管中的光纤传送到生物组织去除和修复的手术部位。 在该区域中具有输出波长的公开的激光源包括：钬掺杂的钇铝石榴石（Ho：YAG），掺杂钬的钇氟化锂（Ho：YLF），掺杂钬的钇 - 钆 - 石榴石（HO： YSGG），掺铒YAG，铒掺杂YLF和Th掺YAG。 激光输出能量被施加到已经特别纯化以将羟基离子浓度降低到低水平的二氧化硅基光纤上。 导管可以由布置成为大面积覆盖提供重叠输出图案的单个光纤或多个光纤组成。 在用于去除动脉粥样硬化斑块的优选应用中，优选在约1.9至约2.1微米的波长范围内工作的钬掺杂激光。 为了通过掺杂钬的激光去除这种斑块，已经发现阈值能量密度应该大于每个脉冲约0.6焦耳/ mm 2，并且脉冲宽度应该显着小于约83毫秒，而且 重复率应在约1至约10赫兹的范围内。

    Solid-state laser frequency conversion system
    65.
    发明授权
    Solid-state laser frequency conversion system 失效
    固态激光变频系统

    公开(公告)号：US5066291A

    公开(公告)日：1991-11-19

    申请号：US514198

    申请日：1990-04-25

    申请人： Bob W. Stewart

    发明人： Bob W. Stewart

    IPC分类号： A61B18/20 ,  A61N5/067

    CPC分类号： A61B18/20 ,  A61B2018/2065 ,  A61N2005/067

    摘要： There is provided a conversion system for use with commercially available laser devices for medical applications where laser light at a predetermined wavelength is converted for simultaneous coaxial application of laser light at a plurality of predetermined medically useable wavelengths. The conversion system includes focusing structure for focusing laser radiation at predetermined pump wavelength into a conversion medium. The conversion medium is prepared for efficient conversion of a portion of the radiation at the input pump wavelength to a signal wavelength, wherein, in one preferred application, either the pump or signal wavelength is in a range of between about 2.7 and about 3.25 microns. The system further includes structure for coaxially transmitting laser radiation at the resulting plurality of wavelengths from the conversion system for simultaneous use. In other preferred embodiments, the wavelength of the difference frequency produced by the conversion medium is also in a medically desirable range which can add to the effectiveness of the coaxial pump and signal wavelengths in particular medical applications. The conversion system thereby enables relatively unlimited adaption of commercially available laser devices to optimize the effectiveness and application of such devices for a variety of medical procedures.

    摘要翻译： 提供了一种用于市售激光装置的转换系统，用于医疗应用，其中转换预定波长的激光以同时同时施加多个预定的医学上可用的波长的激光。 转换系统包括用于将预定泵波长的激光辐射聚焦到转换介质中的聚焦结构。 准备转换介质以将输入泵浦波长处的一部分辐射有效地转换成信号波长，其中在一个优选应用中，泵浦或信号波长在约2.7和约3.25微米之间的范围内。 该系统还包括用于同时传送来自转换系统的所得多个波长的激光辐射同时使用的结构。 在其他优选实施例中，由转换介质产生的差频的波长也在医学上期望的范围内，这可以增加特定医疗应用中的同轴泵和信号波长的有效性。 因此，转换系统能够相对无限地适应市售的激光装置，以优化用于各种医疗程序的这种装置的有效性和应用。

    Modular interchangeable laser system
    66.
    发明授权
    Modular interchangeable laser system 失效
    模块化可互换激光系统

    公开(公告)号：US4979180A

    公开(公告)日：1990-12-18

    申请号：US440725

    申请日：1989-11-24

    申请人： Arthur M. Muncheryan

    发明人： Arthur M. Muncheryan

    IPC分类号： A61B18/20 ,  A61C1/00 ,  B23K26/02 ,  G02B6/42 ,  H01S3/02 ,  H01S3/06 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/109

    CPC分类号： H01S3/025 ,  A61B18/20 ,  B23K26/02 ,  G02B6/421 ,  G02B6/4296 ,  H01S3/061 ,  H01S3/093 ,  H01S3/109 ,  A61B2018/202 ,  A61B2018/2065 ,  A61C1/0046 ,  H01S3/09415

    摘要： A modular interchangeable laser instrumentation system for applications in industrial processing, medical surgery and treatment, dental treatment, metrology, military applications, forensic investigation, micromachining, optical storage, spectroscopy, research and many other related applications. The system principally comprises a handheld stylus with interchangeable modules to produce various selected laser-radiation beams for any particular work as needed. Each module and the combined modular stylus is adapted to produce a particular type of laser beam for the intended project in hand, and as the modular section of one stylus is replaced by the modular section of another stylus, the generated laser beam assumes a different optical and spectral character, so as to be compatible with the work under process and characterized by the type of material and thickness thereof, texture, or human anatomical tissue of one kind or another, requiring different focus intensities and modal formats. In short, the laser system is a universal, operational device for use in numerous applications now requiring various specific laser systems to accomplish them.

    摘要翻译： 用于工业加工，医疗手术和治疗，牙科治疗，计量，军事应用，法医调查，微加工，光学存储，光谱，研究和许多其他相关应用的模块化可互换激光仪器系统。 该系统主要包括具有可互换模块的手持式触控笔，以根据需要为任何特定工作产生各种所选择的激光辐射束。 每个模块和组合的模块化触控笔适用于为手中的预期项目生产特定类型的激光束，并且由于一个触控笔的模块化部分被另一个触控笔的模块化部分所替代，所产生的激光束采用不同的光学 和光谱特征，以便与正在进行的工作兼容，其特征在于需要不同聚焦强度和模式格式的一种或多种类型的材料及其厚度，质地或人体解剖组织的类型。 简而言之，激光系统是一种通用的操作装置，可用于众多应用中，现在需要各种特定的激光系统来完成它们。