Lighting instrument, in particular for use in ophthalmologic microsurgery
AssigneeDuke University
InventorsAlexander M. Eaton, Robert Machemer, Dyson Hickingbotham, Ron Overaker
Life of this patent
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Abstract
A micro surgical lighting instrument includes a hollow needle and a light guide received coaxially within the hollow needle and connected to a light source for transmitting light to a surgical site of a patient. The light guide has a distal end formed with an end face of circular segment shape and defined by a plane oriented orthogonal to the axis of the hollow needle, and a slanted surface adjacent the end face and extending rearwardly at an acute angle, with the slanted surface being lined by a coating for reflection of incident light rays.
Claims14
A microsurgical lighting instrument, in particular for vitreous surgery;
- comprising:
- a hollow needle defining an axis;
- a light guide received coaxially within the hollow needle and connected to a light source for transmitting light to a surgical site of a patient, said light guide having a distal end formed with an end face of circular segment configuration and defined by a plane oriented orthogonal to the axis of the hollow needle, and with a slanted surface adjacent the end face and extending rearwardly at an acute angle;
- and
- a coating applied on the slanted surface for reflection of incident light rays.
Dependencies are inferred from the claim text.