Ophthalmological ultrasonography scanning apparatus

Details Ophthalmological ultrasonography scanning apparatus Ophthalmological ultrasonography scanning apparatus

A - Human Necessities

61

B

A61B 8/10 (2006.01) G10K 11/35 (2006.01)

Patent

CA 2395203

An apparatus for ultrasound scanning of the eye is provided comprising a virtual center translocation mechanism that facilitates precise arcuate motion of an ultrasonic transducer to maintain focal distance from the eye and to maintain normality of the ultrasound beam with surfaces of the eye. The invention also provides a radius adjust mechanism for changing the radius of ultrasound scanning to facilitate positioning of the transducer focal point on selected surfaces of the eye. Centration optics are also provided, for aligning the ultrasound transducer with the Purkinje (or other optical or geometric) axis of a patient's eye.

L'invention concerne un dispositif de tomographie par ultrasons de l'oeil, comprenant un mécanisme de translocation de centre virtuel favorisant le déplacement arqué précis d'un transducteur ultrasonore afin de maintenir la distance focale depuis l'oeil et de conserver la normalité du faisceau ultrasonore avec les surfaces de l'oeil. L'invention concerne également un mécanisme de réglage du rayon permettant de modifier le rayon du balayage ultrasonore afin de faciliter le positionnement du point focal du transducteur sur les surfaces de l'oeil sélectionnées. Un dispositif optique de centrage permet d'aligner le transducteur ultrasonore avec l'axe de Purkinje ou tout autre axe optique ou géométrique de l'oeil d'un patient.

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