Radiolucent retractor and related components

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/17 (2006.01) A61B 17/02 (2006.01) A61B 17/28 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2443265

A radiolucent halo-type retractor (20) having a radiolucent curvilinear fixed member (32) connected to a radiolucent curvilinear movable member (34). Each of the fixed and movable members has a radiolucent male coupling (44, 46) projecting outward from a convex surface (40, 42) to receive a female coupling of a retractor arm. The ends (60, 68) of the movable member are separated by a distance less than a distance separating the ends (56, 64) of the fixed member. Radiolucent starburst connectors (58, 62) are disposed on first ends of the fixed and movable members to secure the fixed and movable members at a desired angular orientation. Radiolucent starburst connectors (66, 70) are also disposed on second ends of the fixed and movable members to secure the fixed and movable members at a desired angular orientation. A pin (72) rotatably connects the first ends. A locking shaft (76) rotatably connects the second ends and is operable to lock the fixed and movable members in a desired orientation.

L'invention concerne un écarteur de type halo (20) perméable aux rayons X et comprenant un élément fixe curviligne (32) perméable aux rayons X relié à un élément mobile curviligne (34) perméable aux rayons X. L'élément fixe et l'élément mobile présentent tous deux un raccord mâle (44, 46) perméable aux rayons X et saillant à l'extérieur d'une surface convexe (40, 42) afin de recevoir un raccord femelle d'un bras d'écarteur. Les extrémités (60, 68) de l'élément mobile sont séparées par une distance inférieure à la distance séparant les extrémités (56, 64) de l'élément fixe. Des raccords étoilés (58, 62) perméables aux rayons X sont situés à des premières extrémités des éléments fixe et mobile afin d'immobiliser les éléments fixe et mobile selon une orientation angulaire désirée. Des raccords étoilés (66, 70) perméables aux rayons X sont également situés à des deuxièmes extrémités des éléments fixe et mobile afin d'immobiliser les éléments fixe et mobile selon une orientation angulaire désirée. Une broche (72) relie de façon rotative les premières extrémités. Un manchon de verrouillage (76) relie de façon rotative les deuxièmes extrémités et sert à bloquer les éléments fixe et mobile selon une orientation désirée.

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