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United States Patent 5,658,236 Aug. 19, 1997 United States Patent 5,441,041 Aug. 15, 1995 European Application EP 0642764 May 15, 1995 The present invention relates to an optical obturator which includes a sleeve having a longitudinal bore between a proximal end and a distal end. The longitudinal bore of the sleeve is configured to receive at least a portion of an endoscope or like image transferring system. An image directing member is positioned at the distal end of the sleeve and is provided to direct optical images into the longitudinal bore of the sleeve. A movable blade is positioned distal to the image directing member to facilitate penetration of body tissue.
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United States Patent 5,569,160 Oct. 29, 1996 United States Patent 5,467,762 Nov. 21, 1995 The present invention relates to an optical obturator which includes a sleeve having a longitudinal bore between a proximal end and a distal end. The longitudinal bore of the sleeve is configured to receive at least a portion of an endoscope or like image transferring system. An image passing member, such as an optical window is positioned at the distal end of the sleeve and is provided to permit optical images to pass into the longitudinal bore of the sleeve and to permit illumination light to pass to the surgical site. An automatically retracting blade is positioned distal to the image passing member to facilitate penetration of body tissue.
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United States Patent 5,700,236 Dec. 23, 1997 The present invention provides an endoscopic sheath for protecting and/or changing an angle of view of an endoscope. The sheath has a distal portion configured to engage a distal most portion of an endoscope imaging optics. The distal portion houses structure for changing the angle of view of an endoscope. In a preferred embodiment, this structure includes a prism. The distal portion may additionally house structure for changing the angle of illumination of an illumination portion of an endoscope. This structure may be a prism or a curved light guide or at least one angled optical fiber. Both the structure for changing the angle of view of an endoscope and the optical member for changing the angle of illumination of an endoscope may be positioned within the distal portion to align with the respective imaging or illumination elements of the endoscope.
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United States Patent 5,584,793 Dec. 17, 1996 United States Patent 5,573,493 Nov. 12, 1996 European Application EP 0647425 Apr. 12, 1995 The present invention provides an endoscopic sheath for protecting and/or changing an angle of view of an endoscope. The sheath has a distal portion configured to engage a distal most portion of an endoscope imaging optics. The distal portion houses structure for changing the angle of view of an endoscope. In a preferred embodiment, this structure includes a prism. The distal portion may additionally house structure for changing the angle of illumination of an illumination portion of an endoscope. This structure may be a prism or a curved light guide or at least one angled optical fiber. Both the structure for changing the angle of view of an endoscope and the optical member for changing the angle of illumination of an endoscope may be positioned within the distal portion to align with the respective imaging or illumination elements of the endoscope.
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on to a tilted screen adjacent a surgical field |
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United States Patent 5,543,832 Aug. 6, 1996 A method and apparatus for projecting an image of a surgical field along an optical path to intersect a display screen which is nonperpendicular to the optical path and adjacent the surgical field. A video projector projects the image along the optical path through a tilted projection optic or compensator, and mirrors locate the optical path adjacent the surgical field. A sterilizable display screen is located in the optical path adjacent the surgical field so that a normal to the screen is noncoincident with the optical path and the projected image on the screen is of constant focus across the screen.
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European Application EP 0674881 Oct. 4, 1995
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United States Patent 5,616,131 Apr. 1, 1997 European Application EP 0589426 May 30, 1994 An apparatus for anchoring surgical instrumentation to tissue having a collar with structure thereon for attaching the collar to a surgical instrument and suture receiving structure disposed peripherally on the collar, the suture receiving being configured and dimensioned to receive an anchoring suture therein. A method is disclosed for using the apparatus whereby at least one suture provided in the peripheral tissue adjacent the surgical instrumentation is wrapped within the receiving structure.
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