Siemens Aktiengesellschaft

Intelligent Surgical Lasers Inc.

Stefan Goelz

Steffen Seeber

John Juschka

Joerg Stein

Martin Kolb

Chi-Fu Hsueh

Gregory J Morris

The invention relates to a leaf () for a multi-leaf collimator () for delimiting a high-energy beam (&#x2033;) of an irradiation device, in particular for conformational radiation therapy. According to the invention, the multi-leaf collimator () comprises a plurality of opposing leaves (), which can be brought into the beam path (&#x2033;) by means of drives (), in such a way that the contour () of said path can be shaped in accordance with the volume to be irradiated. The need for beam-absorbent material () is reduced, as the leaf () essentially only comprises a beam-absorbent material () of an appropriate thickness () in a region () that is brought into the path (&#x2033;) of the high-energy beam () during the course of all possible positional displacements (). The invention also relates to a corresponding multi-leaf collimator (), a device () for delimiting beams, and an irradiation device.

Leaf, multi-leaf collimator, device for delimiting beams and irradiation device

An eye stabilizing mechanism for use with a computer controlled ophthalmic laser system includes a base on which the ophthalmic laser system is mounted. A frame is slidingly mounted on the base, and the frame is connected to the base by a linear spring. A contact lens is fixedly attached to the frame and an object lens is slidingly mounted on the frame. An object lens activating device is also fixedly attached to the frame, and this device is connected to the object lens to move the object lens in accordance with preprogrammed instructions from the computer. Thus, while contact is maintained between the surface of the eye and the contact lens, the object lens can be moved by computer control to move the focal point of the laser system through selected eye tissue. Also, any movement of the frame, due to movement of the eye, is opposed only by the substantially constant force which is established by the linear spring between the base and the frame.

Eye stabilizing mechanism for use in ophthalmic laser surgery

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Plankstadt, Germany

Stefan Goelz