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 Surgical microscope system

Details
Inventors: Terry, Clifford;
Assignee:
Primary Examiner: Sacher; Paul A.
Assistant Examiner:
Attorney, Agent or Firm: Mesaros; John G.

A surgical microscope apparatus and method for using the same for use while suturing an incision in the cornea for reconfiguring the cornea to a spherical surface having a radius of curvature of a predetermined magnitude, the microscope system including means for projecting an image onto the cornea, means for optically splitting the image into a plurality of images within the surgical field of view for viewing through the binocular eyepieces and means for adjusting the optical system to orient the images into a predetermined alignment and configuration indicative of the radius of curvature, the alignment and configuration occurring when the cornea sutures are tensioned correctly to indicate a spherical surface of the predetermined radius of curvature. The means for optically splitting the images are so-positioned to permit a portion of the surgical field of view to pass through the microscope undeviated to enable the surgeon to utilize the necessary suturing tools without multiple images of the tools. In a first embodiment a fixed location prism array is utilized for optically splitting the image and the optical system is adjusted by varying the magnification powers of the microscope. In a second embodiment, rotary prisms are in a fixed position within the optical path for optically splitting the image and the optical system is adjusted by varying the prism power. The optical system adjusting means in either embodiment are calibrated to an electrical signal indicative of the radius of curvature.

DETAILED DESCRIPTION The foregoing and other objects of the invention are accomplished by providing a new and improved microscope system having means for projecting on to the cornea an image, such as a circle, with means within the microscope for optically splitting the image so-projected into a plurality of substantially identical images viewable through one or both binocular eyepieces.
Means such as the zoom mechanism or rotary prisms position the images in a predetermined alignment for indicating the curvature and configuration of the cornea.
The means for optically splitting the image include a plurality of prisms, lenses or mirrors insertable into the optical path within the microscope, such means being so-configured and so-positioned that a portion of the surgical field of view passes through the optical system undeviated, this portion corresponding to that portion in which the suturing is being performed.
The suturing is accomplished by utilizing adjustable sutures such as slipknots which can be selectively tightened or loosened until the projected images are aligned in position and circular in configuration indicating the optimal corneal configuration.
Electronic means are provided for pre-setting the microscope to a predetermined radius of curvature.
Further objects, features and advantages of the invention will become apparent upon a reading of the specification when taken in conjunction with the drawings in which like reference numerals refer to like elements in the several views.



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