Angled rotary tissue cutting instrument with flexible inner...

Details Angled rotary tissue cutting instrument with flexible inner... Angled rotary tissue cutting instrument with flexible inner...

A - Human Necessities

61

B

A61B 17/32 (2006.01)

Patent

CA 2386295

An angled rotary tissue cutting instrument includes an outer member or blade, having a rigid outer tube with proximal and distal portions connected by a bend, and an inner member or blade rotatably disposed within the outer member and including an inner tube of integral one-piece construction having a spiral cut formed therein between proximal and distal ends thereof to define a flexible region adjacent the bend, and at least one layer of a spirally wound strip of material superimposed over the spiral cut portion of the inner tube. The spiral cut preferably extends to a cutting tip at the distal end of the inner tube so that the inner member can be bent closer to the distal end thereof to access difficult to reach areas of the head and neck, and other parts of the body.

L'invention concerne un instrument chirurgical rotatif en angle, pour trancher les tissus, qui comprend un élément externe ou une lame, un tube externe rigide à parties proximale et distale reliées par une courbure, et un élément interne ou une lame de type rotatif dans l'élément externe, y compris un tube interne de conception intégrée en une seule pièce avec une entaille en spirale entre les extrémités proximale et distale pour définir une région flexible adjacente à la courbure. Il existe au moins une couche de bande de matériau enroulée en spirale superposée à l'entaille en spirale du tube interne. De préférence, cette entaille s'étend jusqu'à une extrémité tranchante à l'extrémité distale du tube interne, ce qui permet de courber l'élément interne en position plus rapprochée de l'extrémité distale pour accéder à des zones difficiles à atteindre de la tête et du cou ou autres.

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