Other

Accutome, Inc.

Frederic B Kremer

Edward R O'Brien

Harold E Clupper

A surgical cutting device for making incisions in tissue has a holder with a distal end, an applanation plate extending from said distal end for contacting and altering the contour of tissue to be incised, and a cutting blade reciprocally movable with respect to the holder and extending from said distal end in proximity to the applanation plate. The blade is guided by the holder and linearly advanceable into the tissue to effect an incision. After the incision is made, the blade is retractable from the tissue.

Cutting device and method for making controlled surgical incisions

A micro-keratome device for performing eye surgery is disclosed. The device is comprised of a vacuum ring, an applanation shoe and a cutting blade. The cutting blade and applanation shoe are mounted on the vacuum ring with the cutting blade being pivotally mounted to the applanation shoe so that movement of the cutting blade, while the vacuum ring is still mounted to a patient's eye, permits the user to have an unobstructed path to that portion of the eye exposed by the cutting blade. In a further embodiment, the device includes a guard, mounted at one end of the applanation shoe, which collects, protects and positions the previously cut portion of eye tissue.

Microkeratome

An apparatus is disclosed for measuring the thickness of the corneas. Corneal thickness is measured by first directing ultrasonic pulses towards the cornea and timing the interval between reflected pulses. The apparatus also includes a pulse stretcher for enlarging the width of the pulse representing the interval between pulses reflected from the inner and the outer surfaces of the cornea, so that the time between pulses can be accurately measured by a conventional, low-frequency electronic clock. The invention further comprises electronic gating means for rejecting spurious pulses.

Apparatus for measuring the thickness of corneas

An apparatus is disclosed for measuring the thickness of the cornea and for regulating the depth of a surgical blade in relation to the local corneal thickness. Corneal thickness is measured by first directing ultrasonic pulses towards the cornea and timing the interval between reflected pulses. The apparatus also includes a pulse stretcher for enlarging the width of the pulse representing the interval between pulses reflected from the inner and the outer surfaces of the cornea, so that the time between pulses can be accurately measured by a conventional, low-frequency electronic clock. The invention further comprises electronic gating means for rejecting spurious pulses.

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Bala Cynwyd, PA, United States of America

Frederic B Kremer