Patent ID: 7473263
Filing Date: 2009-01-06
Classification: A61B,A61M,Y10T

Abstract:
1. A cutting blade assembly usable with a motor, a handle and a source of irrigation fluid as a powered surgical apparatus, the handle including a barrel that defines an irrigation fluid channel, the irrigation fluid channel including a longitudinal section and a transverse section, the cutting blade assembly comprising: a rotatable inner tube rotatable by the motor and defining a cutting surface; a rotatable inner hub secured to the inner tube, the inner tube and inner hub being rotatable together with respect to the barrel by the motor; an outer tube defining a cutting window extending along a length of the outer tube so as to expose the cutting surface of the rotatable inner tube to bodily tissue during operation, the inner tube extending within the outer tube so as to define a tube gap therebetween; a rotatable outer hub secured to the outer tube such that rotation of the outer hub with respect to the barrel rotates the outer tube and reorients the cutting window with respect to a surface being cut, the outer hub defining a circumferentially extending through hole channel and a transverse through hole at the through hole channel, the through hole channel and transverse through hole communicating with the transverse section of the irrigation fluid channel of the barrel and the tube gap such that irrigation fluid can flow through the irrigation fluid channel of the barrel and to the tube gap via the through hole channel and the transverse through hole of the outer hub.