Lasag Ag

Robert Meerstetter

Paul Batscher

Michel Lawniczak

The control arrangement (13) of this invention includes a casing on which the hand (22) of a medical practitioner may rest when the position of the point of focus of a laser beam onto a place to be surgically treated is sought. The arrangement includes a roller (20) operated by the thumb (21) and a ball (23) operated by the index finger (24), the roller and the ball respectively displacing the point of focus along a first coordinate axis (Z) and along second and third coordinate axes (X Y). A push button (25) operated by the middle finger (26) controls firing of the laser beam. The arrangement is used in ophthalmology.

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Thun, Switzerland

Robert Meerstetter