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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
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| 출원번호 | US-0307315 (1989-02-06) |
| 발명자 / 주소 |
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| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 554 인용 특허 : 0 |
A system for effecting precision laser surgery includes an intensified surgical video microscope directed at the tissue to be operated upon and having zoom capability. The surgical microscope presents a microscopic image on a video screen in front of the surgeon. Preferably, the video screen is divi
A system for effecting precision laser surgery includes an intensified surgical video microscope directed at the tissue to be operated upon and having zoom capability. The surgical microscope presents a microscopic image on a video screen in front of the surgeon. Preferably, the video screen is divided into multiple separate sections, with the microscopic video image in one section and precise cross sectional and plan views indicating location presented in the other sections of the screen. These additional views may be generated using Moire interferometry by projecting a Ronchi ruling on the surface of the tissue, in viewing the projection with a camera to obtain all necessary information for contour tracking of the subject surface. Interior elements and interfaces of, for example, the eye are also sensed by a light beam and precisely located and mapped by a computer forming a part of the device. The imaging system of the invention enables the surgeon to have before him abundant visual information on the video screen with indication of precisely where, in three dimensions, a focused surgical laser beam is directed at any time. The system also includes tracking system for following the movements of the subject tissue, for example an eye during surgery. The tracking system is fast enough to track such movement, preferably at the maximum repetition rate of the laser plus a sufficient margin for safety, but at all times faster than the frame rate for the video displays at which the video screen is retraced.
A system for use in ophthalmic diagnosis and analysis and for support of ophthalmic surgery, comprising, three dimensional mapping means for sensing locations, shapes and features on and in a patient\s eye in three dimensions, and for generating data and signals representing such locations, shapes a
A system for use in ophthalmic diagnosis and analysis and for support of ophthalmic surgery, comprising, three dimensional mapping means for sensing locations, shapes and features on and in a patient\s eye in three dimensions, and for generating data and signals representing such locations, shapes and features, display means receiving signals from the three dimensional mapping means, for presenting to a user images representative of said locations, shapes and features of the eye, at targeted locations including display control means for enabling a user to select the target location and to display a cross section of portions of the eye, position analysis means associated with and receiving signals from the three dimensional mapping means, for recognizing the occurrence of changes of position of features of the eye, target tracking means associated with the position analysis means, for searching for a feature of target tissue and finding said features new position after such a change of position, and for generating a signal indicative of the new position, and tracking positioning means for receiving said signal from the target tracking means and for executing a change in the aim of the three dimensional mapping means to the new position of said feature of the target tissue, to thereby follow the feature and stabilize the images on the display means.
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