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2. 发明申请

WO2018053489A1 LASER ASSISTED CATARACT SURGERY 审中-公开
标题翻译：激光辅助神经外科手术
公开(公告)号：WO2018053489A1
公开(公告)日：2018-03-22
申请号：PCT/US2017/052224
申请日：2017-09-19
申请人： EXCEL-LENS, INC.
发明人： MORDAUNT, David
IPC分类号： A61F9/007 , A61F9/008
CPC分类号： A61F9/00825 , A61F9/007 , A61F9/00754 , A61F9/008 , A61F2009/0087 , A61F2009/00889
摘要： Laser assisted cataract surgery methods and devices utilize one or more treatment laser beams to create a shaped opening in the anterior lens capsule of the eye when performing a capsulorrhexis procedure. A light absorbing agent may be applied to the anterior lens capsule to facilitate laser thermal separation of tissue along a treatment beam path on the lens capsule. Relative or absolute reflectance from the eye, and optionally from a surgical contact lens, may be measured to confirm and optionally quantify the presence of the light absorbing agent, before the treatment beam is applied. Such measurements may be used to determine that sufficient light absorbing agent is present in the lens capsule so that transmission of the treatment beam through the capsule will be below a predetermined threshold deemed safe for the retina and other interior portions of the eye, and may also be used to determine that sufficient light absorbing agent is present to result in complete laser thermal separation of the anterior capsule along the treatment beam path. Visualization patterns produced with one or more target laser beams may be projected onto the lens capsule tissue to aid in the capsulorrhexis procedure. In addition or alternatively, virtual visualization patterns may presented on a display integrated with a laser assisted cataract surgery device to aid in the procedure. The visual axis of the eye may be determined, during surgery for example, with a laser beam on which the patient is fixated. The orientation of a toric IOL may be assessed during or after placement by observing the reflection from the back of the eye of a laser beam on which the patient is fixated. The devices disclosed herein may be attached to or integrated with microscopes.
摘要翻译：激光辅助白内障手术方法和装置利用一个或多个治疗激光束在进行囊袋取出手术时在眼睛的前晶状体囊中形成成形开口。可以将光吸收剂施加到晶状体前囊以促进组织沿着晶状体囊上的治疗光束路径的激光热分离。在施加治疗束之前，可以测量来自眼睛以及可选地来自外科接触镜片的相对或绝对反射率，以确认并任选地量化光吸收剂的存在。这样的测量结果可以用于确定在晶状体囊中存在足够的光吸收剂，使得治疗光束穿过囊的传输将低于对视网膜和眼睛的其他内部部分视为安全的预定阈值，并且还可以被用于确定存在足够的光吸收剂以导致沿着治疗光束路径完成前囊的激光热分离。用一个或多个目标激光束产生的可视化图案可以被投影到晶状体囊组织上以帮助囊切除手术。另外或可选地，虚拟可视化图案可呈现在与激光辅助白内障手术装置集成的显示器上以辅助该手术。例如，在手术期间，可以用患者固定在其上的激光束来确定眼睛的视轴。通过观察患者固定的激光束的眼睛后部的反射，可以在放置期间或之后评估环面IOL的取向。本文所公开的装置可以附接到显微镜或与显微镜集成。

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