Improved automatic surgical device for cutting cornea and control components

一种用于大体上切割通过患者眼睛的角膜的手术设备，该设备中包含一个定位环，其可以环绕着将要切割的角膜临时附着在眼睛的一个部分上，并且确定出一个孔，该孔的尺寸使之可以接收并暴露将要被切割的角膜。该手术设备中还包含一个切割头组件，其可以被引导和驱动着沿一个大致弧形路径移过定位环的一个上表面，一个切割元件安置在切割头组件中并可以横向振荡，以便于平稳且有效地切割角膜。切割头组件可以通过一个连接件以可拆卸的方式连接着定位环，从而使得切割头组件能够沿大致弧形路径相对于定位环移动，同时又保持它们之间充分咬合，以确保获得平稳和恒定的传动运动。 A surgical device for cutting substantially across a cornea of an eye of a patient, the device including a positioning ring structured to be temporally attached to a portion of the eye surrounding the cornea to be cut, and defining an aperture sized to receive and expose the cornea to be cut. The surgical device further includes a cutting head assembly structured to be guided and driven over an upper surface of the positioning ring in a generally arcuate path, and having a cutting element positioned therein and structured to oscillate laterally to facilitate smooth and effective cutting of the cornea. The cutting head assembly is structured to be detachably coupled to the positioning ring by a coupling member which permits movement of the cutting head assembly relative to the positioning ring along the generally arcuate path, but maintains sufficient engagement therebetween to ensure that smooth, steady, driven movement is maintained