Abstract: A surgical cutting tool for use with a handpiece having a motor is disclosed. The surgical cutting tool comprises a nose tube defining a lumen between proximal and distal ends. A bushing is coupled to the nose tube at the distal end and is disposed at least partially within the lumen. The bushing defines a second lumen configured to receive a region of a driveshaft that extends past the distal end of the nose tube. A bur defines a recess sized to receive at least a portion of the bushing within the recess. The bur is configured to be coupled to the driveshaft within the recess.

Abstract: A surgical handpiece system (10) includes a high-speed surgical bur assembly (102) and a surgical handpiece assembly (104). The high-speed surgical bur assembly has a nose tube (17, 106) and a driveshaft (24, 110) at least partially disposed within the nose tube. A cutting tool (18, 114) is coupled to a distal region of the driveshaft. The cutting tool and the driveshaft are configured to rotate relative to the nose tube. The surgical handpiece system comprises a hub (14, 146) and a rotatable drive chuck (30, 34, 172) for alignment and coupling to the nose tube and the driveshaft. A motor (12) is configured to rotate the rotatable drive chuck, the driveshaft, and the cutting tool when the driveshaft is coupled to the rotatable drive chuck.

Abstract: A surgical cutting tool for use with a handpiece having a motor is disclosed. The surgical cutting tool comprises a nose tube defining a lumen between proximal and distal ends. A bushing is coupled to the nose tube at the distal end and is disposed at least partially within the lumen. The bushing defines a second lumen configured to receive a region of a driveshaft that extends past the distal end of the nose tube. A bur defines a recess sized to receive at least a portion of the bushing within the recess. The bur is configured to be coupled to the driveshaft within the recess.

Abstract: Systems and methods for performing transcanal ear surgery. A volume of fluid is maintained within the ear canal to provide a flooded environment. A cutting member of a cutting instrument is submerged and operated within the flooded environment to resect tissue within the ear. A reservoir system may be coupled to the patient to facilitate providing the flooded environment. The reservoir system at least partially surrounds the auricle of the ear in fluid-tight sealing engagement with the head of the patient. An irrigation pump and a suction source on one or both of the reservoir system and the cutting instrument are operated to provide the flooded environment. The reservoir system includes an access opening sized to receive one or more surgical instruments, for example, the cutting instrument and an endoscope. The flooded environment improves cooling of the surgical site and visualization of the surgical site from the endoscope.