Illumination system for variable direction of view instruments

A - Human Necessities – 61 – B

Patent

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A61B 1/06 (2006.01) G02B 23/00 (2006.01) G02B 27/02 (2006.01)

Patent

CA 2533971

A illumination system for variable direction of view instruments is disclosed generally comprising an endoscope having a longitudinal axis and a variable view vector that pivots about a pivot axis angularly offset from the longitudinal axis. The view vector has an attendant viewing field that travels along a path as the view vector pivots, defining a viewing range. A source of illumination is arranged in a plane offset from the plane in which the view vector pivots and provides an annular, solid angle of illumination that covers the viewing range. In certain embodiments, the pivot axis is perpendicular to the longitudinal axis and the illumination plane is parallel to the pivot plane. In some embodiments, the source of illumination is a plurality of light emitting diodes arranged around the pivot axis.

Système d'éclairage pour orienter des instruments d'examen qui comprend un endoscope ayant un axe longitudinal et un vecteur d'examen variable qui pivote autour d'un axe qui présente un décalage angulaire par rapport à l'axe longitudinal. Le vecteur d'examen délimite un champ de vision connexe qui se déplace le long d'une trajectoire quand le vecteur d'examen pivote, définissant une plage d'examen. Une source d'éclairage est disposée selon un plan décalé par rapport au plan de pivotement du vecteur d'examen et décrit un angle d'éclairage solide annulaire qui couvre la plage d'examen. Dans certains modes de réalisation, l'axe de pivot est perpendiculaire à l'axe longitudinal et le plan d'éclairage est parallèle au plan du pivotement. Dans certains modes de réalisation, la source d'éclairage consiste en plusieurs diodes électroluminescentes disposées autour de l'axe de pivot.

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