Powered surgical handpiece with integrated irrigator and suction application

Abstract

A powered surgical handpiece ( ) and a complementary cutting accessory ( ). The accessory includes a rotating hub ( ) in which magnets ( ) are seated. An inner tube ( ) with a cutting head extends from the rotating hub. A static hub is ( ) located over the rotating hub. An outer tube ( ) extends from the static hub over the inner tube. The static hub is formed with a inlet bore ( ) through which irrigation fluid is introduced into the annular gap between the two tubes. The rotating and static hubs seat in the body of the handpiece. The handpiece has a coupling assembly ( ) that engages the static hub to hold the cutting accessory in place. There is a stator ( ) in the handpiece that surrounds the rotating hub. Collectively, the stator and the magnets in the rotating hub define a motor ( ) that rotates the rotating hub and the inner tube. An irrigation line ( ) supplies irrigating fluid to the handpiece. The irrigation line is connected to an inlet fitting ( ) that is part of the coupling assembly. When the coupling assembly is set to engage the static hub, the inlet fitting is automatically coupled to the inlet bore to serve as conduit for introducing irrigation fluid into the cutting accessory. A suction may be drawn from the handpiece through the inner tube. A manually set valve member ( ) regulates whether the inner tube is placed in communication with the conduit through which the suction is drawn or the irrigation line.