Otoscope

A - Human Necessities – 61 – B

Patent

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Details

A61B 1/227 (2006.01)

Patent

CA 2534762

An otoscope permitting examination of a patient's ear is defined by an instrument head including a proximal end and a distal insertion portion that is insertable into the ear. The otoscope includes an imaging lens train disposed within the instrument head, wherein each of the imaging lens train, an eyepiece and a distal opening of said insertion portion are aligned along an optical axis. The otoscope further includes a focusing mechanism for selectively moving at least one of the imaging lens train and the optics contained within the eyepiece relative to one another along the optical axis. The imaging lens train and the optics in the eyepiece define an optical system such that an entrance pupil is substantially located in the distal insertion portion of the instrument head, thereby enabling the entire tympanic membrane to be viewed at once by the user.

L'invention concerne un otoscope permettant d'examiner l'oreille d'un patient et comprenant une tête d'instrument comprenant une extrémité proximale et une partie d'insertion distale pouvant être insérée dans l'oreille. L'otoscope comprend une lentille d'imagerie disposée à l'intérieur de la tête d'instrument, chaque train de lentille, un oculaire et un orifice distal de la partie d'insertion étant alignés le long de l'axe optique. L'otoscope comprend, de plus, un mécanisme de mise au point permettant de déplacer de manière sélective au moins un train de la lentille d'imagerie et les dispositifs optiques contenus à l'intérieur de l'oculaire l'un par rapport à l'autre le long de l'axe optique. Ledit train de la lentille et le dispositif optique contenu dans l'oculaire définissent un système optique, de sorte que la pupille est située sensiblement dans la partie d'insertion distale de la tête d'instrument, tout en permettant à un utilisateur de visualiser la membrane tympanique entièrement.

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