专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP1301154A2 LASER FLUENCE COMPENSATION OF A CURVED SURFACE 审中-公开
标题翻译：歪表面的激光流量补偿
公开(公告)号：EP1301154A2
公开(公告)日：2003-04-16
申请号：EP01901958.7
申请日：2001-01-11
申请人： LaserSight Technologies, Inc.
发明人： KLIEWER, Michael, L. , SMITH, Michael, J.
IPC分类号： A61F9/01
CPC分类号： B23K26/073 , A61F9/00806 , A61F9/00817 , A61F2009/00844 , A61F2009/00855 , A61F2009/00872 , A61F2009/0088 , A61F2009/00882
摘要： A laser system and techniques which compensate for laser fluence drop off or losses of irradiation as an ablating laser beam is traversed on a curved surface (10) (e.g., on corneal tissue). The disclosed ablating laser system and techniques compensated for fluence differentials from pulse-to-pulse by adjusting an appropriate parameter of a laser beam. In the preferred embodiment, the number of pulses imparted in the periphery, the size or shape of the ablating laser beam is adjusted with, e.g., a variable aperture (30) placed in the beam delivery path, by changing a magnification of relay optics (40) in the beam delivery path, or by increasing a number of ablation spots in peripheral portions of an ablation zone as compared with the number of ablation spots in a central portion of the ablation zone.

2. 发明公开

EP1265544A2 PROLATE SHAPED CORNEAL RESHAPING 审中-公开
标题翻译： RESTORING眼角膜简介
公开(公告)号：EP1265544A2
公开(公告)日：2002-12-18
申请号：EP00992192.5
申请日：2000-10-05
申请人： LaserSight Technologies, Inc.
发明人： HOLLADAY, Jack, T. , SMITH, Michael , TERRY, Travis , MARROU, Lance
IPC分类号： A61B18/18
CPC分类号： A61F9/008 , A61B3/0025 , A61B3/107 , A61F9/00804 , A61F2009/00872 , A61F2009/00882
摘要： Apparatus (300) and techniques for performing prolate shaped corneal reshaping. In accordance with the techniques, an ablation scanning (380) laser system includes fitter (320) modules to fit input refractive or topographical measurement data to a three (3) variable ellipsoid model. This provides pre- and post-operative approximations of a cornea. A desired prolate shaped ablation profile is determined based on a desired prolate ellipsoidal shape. In accordance with the principles of the present invention, the spheroequivalent ellipsoid model has only three degrees of freedom (not four as in a conventional biconic technique) to define a desired ablation profile, providing extremely accurate and predictable long term vision correction. To arrive at an ellipsoid model having only three numbers of freedom, a spheroequivalent (SEQ) value of asphericity QSEQ is generated. The spheroequivalent eccentricity QSEQ value replaces two degrees of freedom (i.e., eccentricities) in an otherwise conventional biconic modeling system, leaving only three (3) variables to determine for a best fit ellipsoidal modeling of a cornea possible, and to limit results to regular astigmatism that can be corrected with optical spherocylinders.

3. 发明公开

EP1051118A1 SMOOTH AND UNIFORM LASER ABLATION APPARATUS AND METHOD 审中-公开
标题翻译： DEVICE AND METHOD FOR光滑，均匀激光烧蚀
公开(公告)号：EP1051118A1
公开(公告)日：2000-11-15
申请号：EP99902049.8
申请日：1999-01-06
申请人： LaserSight Technologies, Inc.
发明人： TANG, Fuqian
IPC分类号： A61B17/36
CPC分类号： A61F9/008 , A61F9/00802 , A61F2009/00872 , A61F2009/00897
摘要： The present invention is a laser beam delivery system, a method for smoothly and uniformly ablating tissue, e.g., for reshaping a cornea of an eye, even in the face of real-world conditions such as a moving eye. The method includes defining a plurality of scan lines (22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44) in an ablation zone (135) on the tissue and defining a plurality of laser beam ablation points (46, 49, 48) along each of the scan lines. An ablating laser beam is scanned along a series of non-adjacent scan lines (22, 26, 30, 34, 38, 42) of the plurality of scan lines and tissue is intermittently ablated at non-adjacent ones of the laser beam ablation points (46, 48) on each non-adjacent scan line. In another aspect of the invention, an ablation zone (135) is divided into a plurality of domains (70). An average depth of ablation in each of the domains (70) is determined. Tissue is ablated by controlling a number of ablating laser beam pulses in each domain (70) in proportion to the average depth of ablation in each domain (70).

4. 发明公开

EP1261274A1 COMBINATION ADVANCED CORNEAL TOPOGRAPHY/WAVE FRONT ABERRATION MEASUREMENT 审中-公开
标题翻译：组合测量和角膜地形图波阵牵张
公开(公告)号：EP1261274A1
公开(公告)日：2002-12-04
申请号：EP01911210.1
申请日：2001-03-01
申请人： LaserSight Technologies, Inc.
发明人： SARVER, Edwin, J. , LIU, David
IPC分类号： A61B3/10
CPC分类号： A61B3/1015 , A61B3/1005 , A61B3/107
摘要： A method for the simultaneous measurement of the anterior and posterior corneal surfaces, corneal thickness, and optical aberrations of the eye surfaces using imaging cameras (c4 and c5) and front view camera (c3). The method employs direct measurements and ray tracing to provide a wide range of measurements for use by the ophthalmic community.

5. 发明公开

EP1164960A1 PROFILING CALIBRATION PLATE 审中-公开
标题翻译：校准板确定PROFILE
公开(公告)号：EP1164960A1
公开(公告)日：2002-01-02
申请号：EP00902393.8
申请日：2000-01-13
申请人： LaserSight Technologies, Inc.
发明人： KERN, William, I.
IPC分类号： A61B18/18
CPC分类号： A61F9/008 , A61B2017/00707 , A61B2017/00725 , A61F9/00814 , A61F2009/00855 , A61F2009/00872
摘要： This invention is a profiling, and/or calibration sample plate (22) allowing approximately full scale calibration monitoring of an ablation achieved in corneal tissue allowing a permanent record of an achieved corneal ablation to be made immediately before (and/or during) the actual cornea to be ablated is ablated. One exemplary profiling/calibration sample plate (22) includes a plate (or other shape) having a recess (36) adapted to contain a cross-linked collagen material (38). A non-contact interferometer (24) may be used to measure the resultant or achieved ablation profile on the surface of the cross-linked collagen material (38) contained in the profiling/calibration sample plate (22). The measured surface features in the collagen material (38), and/or a preserved original or copy of the cross-linked collagen material (38) may be maintained as a permanent record of the actual ablation performed on a particular patient.

6. 发明公开

EP1056516A1 MUTUAL INLAID METHOD AND DEVICE FOR SCANNING AN ABLATING LASER BEAM 审中-公开
标题翻译：方法和设备，用于感测消融激光束
公开(公告)号：EP1056516A1
公开(公告)日：2000-12-06
申请号：EP98960566.2
申请日：1998-12-01
申请人： LaserSight Technologies, Inc.
发明人： LAI, Baoxing , TANG, Fuqian , HAN, Xiaofeng
IPC分类号： A61N5/02
CPC分类号： A61F9/008 , A61F9/00802 , A61F2009/00872 , A61F2009/00897
摘要： Apparatus and method are provided for performing corneal refractive surgery by ablating a portion of a corneal surface of an eye. The apparatus includes a scanner (120) to move a laser beam across a layer to be ablated. A processor (250) determines a first plurality of ablation points substantially within the layer to be ablated. Each of the first plurality of ablation points is defined by a center of the laser beam. The processor (250) determines a second plurality of ablation points to be ablated by the laser beam. Each of the second plurality of ablation points is defined by a center of the laser beam, and each of the second plurality of ablation points is disposed at a location linearly offset from a midpoint between two adjacent ablation points of the first plurality of ablation points in a direction normal to a line defined by the two adjacent ablation points.

7. 发明授权

EP0843529B1 MULTI-CAMERA CORNEAL ANALYSIS SYSTEM 失效
标题翻译：多摄像机系统角膜进行调查
公开(公告)号：EP0843529B1
公开(公告)日：2002-06-05
申请号：EP95940570.5
申请日：1995-10-30
申请人： LaserSight Technologies, Inc.
发明人： SARVER, Edwin, J. , D'SOUZA, Henry
IPC分类号： A61B3/107
CPC分类号： A61B3/107 , G01B11/255
摘要： The current invention relates to the art of corneal topography. More specifically, the current invention adds to the art by providing many methods and apparatuses for advancing the ease and accuracy of corneal topography. Specifically, in addition to a front-view camera (304), the current invention provides a side (temporal) view camera for viewing the cornea or other reflective surface. The side-view camera (302, 303) may capture a true image of the cornea as well as a reflected placido pattern. The information contained in these images provides capability to automatically find the apex, location of the limbus, vertical profile and curvature out to the limbus. These abilities lead to improved methods for autocalibration and autopositioning as well as other advantages in the field of corneal mapping.

8. 发明公开

EP1047346A1 METHOD AND APPARATUS FOR CONTROLLING SCANNING OF AN ABLATING LASER BEAM 审中-公开
标题翻译： STEUERVERFAHREN UND -ORRICHTUNG ZUR ABLATION MITTELS LASERSTRAHLABTASTUNG
公开(公告)号：EP1047346A1
公开(公告)日：2000-11-02
申请号：EP99900376.7
申请日：1999-01-05
申请人： LaserSight Technologies, Inc.
发明人： TANG, Fuqian , HWANG, Ming-Yi
IPC分类号： A61B17/36
CPC分类号： A61F9/00802 , A61F2009/00872 , A61F2009/00897 , B23K2203/32 , B23K2203/50
摘要： A laser beam delivery system (14), and a method for ablating tissue, e.g., for reshaping a cornea (12) of an eye is provided. The laser beam delivery system (14) directs a laser beam (18) on the tissue to be ablated in a predetermined pattern according to the principles of the present invention. The laser beam (18) is incrementally scanned to subsequent laser beam ablation points or spots in the ablation zone (28, 32, 38) in accordance with the predetermined pattern in an arranged order. In one aspect of the present invention, the radii of the predetermined pattern is varied between scans of the laser beam (18) until a predetermined reshaping is achieved by ablation. In another aspect of the present invention, every other, every third, every fourth, etc. laser beam spot in a predetermined patterns is ablated, and the scans are repeated for unablated points until all spots are ablated. In yet another aspect of the present invention, one or more layers in each of a plurality of annular ablation zones may be fully ablated before ablation in other annular ablation zones is performed.
摘要翻译：提供了一种激光束传送系统和用于消融组织的方法，例如用于重塑眼睛的角膜。根据本发明的原理，激光束传送系统以预定图案将激光束引导到要消融的组织上。根据预定图案，激光束被逐渐扫描到随后的激光束消融点或消融区域中的点。激光束按预定顺序以预定图案消除斑点处的组织。在本发明的一个方面，预定图案的半径在激光束的扫描之间变化，直到通过消融来实现预定的重塑。在本发明的另一方面，消除了预定图案中的每隔一个，每三分之一，每四个等等的激光束斑点，并且对于未被放大的点重复扫描直到所有斑点被消融。在本发明的另一方面，在多个环形消融区域中的每一个中的一个或多个层可以在完成其它环形消融区域的消融之前完全消融。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式