Surgical router

Details Surgical router Surgical router

A - Human Necessities

61

B

A61B 17/32 (2006.01)

Patent

CA 2131276

ABSTRACT A surgical router for cutting anatomical tissue includes an outer tubular member and an inner member rotatably disposed in said outer member and having a pair of router blades disposed distally of a distal end of the outer member and equally spaced about a longitudinal axis of the inner member and a pair of flutes disposed between the router blades. The flutes have bottoms and sides transverse to the flute bottoms, with the flute bottoms angularly intersecting a passage in the inner member to form aspiration ports within and integral with the flutes. The router blades have leading walls, trailing walls and clearance walls with a width between the trailing walls that is tapered in a distal direction. The leading walls correspond to the flute sides and are curved about the inner member axis in the direction of rotation of the inner member in the outer member. End and side cutting edges are disposed along the leading walls with the end cutting edges being curved about the inner member axis in accordance with the curvature of the leading walls, and the side cutting edges extending longitudinally, helically along the inner member. Center cutting surfaces join the clearance walls and the leading walls at notches at the inner member distal end, and the junctures of the center cutting surfaces with the clearance walls define center cutting edges angled from the end cutting edges in the direction of rotation of the inner member in the outer member.

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