Surgical tool system with quick release coupling assembly

A cutting accessory, said cutting accessory comprising:

• a drive hub, said drive hub formed with at least one geometric feature for causing said drive hub to engage an output shaft of a handpiece motor;
• a drive shaft that extends forward from said drive hub;
• an outer hub, said outer hub being disposed over said drive hub and having:
• an outer hub base dimensioned to be fitted into a complementary handpiece opening, said base having an open proximal end in which at least a portion of said drive hub is located, a circumferentially extending outer surface, and an outer hub head integral and located forward of said outer hub base, said outer hub head being shaped to define a bore through which said drive shaft extends;
• a lock tab integral with said outer hub base that extends outwardly from the outer surface of said outer hub base, said lock tab shaped to have a distally-directed face disposed essentially perpendicular to the outer surface of the outer hub base, a proximally-directed face that extends essentially perpendicular to the outer surface of said outer hub base, and a side surface that extends from an outward edge of the proximally-directed face of said lock tab to an outward edge of the distally-directed face, the side surface being tapered such that the depth of said lock tab increases along the side surface from the outward edge of the proximally-directed face to the outward edge of the distally-directed face of the locking tab;
• and
• an outer housing that extends forward from said outer hub head and at least partially surrounds said drive shaft.

A cutting accessory for coupling to a powered surgical handpiece, said cutting accessory including:

• a drive hub, said drive hub being formed with at least one geometric feature for causing said drive hub to engage an output shaft of a motor integral with the handpiece;
• a drive shaft that extends forward from said drive hub;
• an outer hub, said outer hub being disposed over said drive hub and including:
• an outer hub base dimensioned to be fitted in a complementary opening in the handpiece, said outer hub base having an inner wall provided adjacent an open proximal end in which said drive hub is seated;
• and an outer hub head integral with and located forward of said outer hub base, said outer hub head being shaped to define a bore through which said drive shaft extends;
• a seal formed from elastomeric material having a base section disposed against the inner wall of said outer hub base, said seal being shaped to define at least one rib that is axially spaced away from the open proximal end of said outer hub base that surrounds said drive hub;
• and
• an outer housing that extends distally from said outer hub head and that at least partially surrounds said drive shaft.

A cutting accessory comprising:

• a drive hub, said drive hub having:
• a drive hub neck with a diameter, said drive hub having a drive hub stem at a proximal end formed with a geometric feature for coupling said drive hub to a handpiece motor;
• and a drive hub head integral with and located at a distal end of said drive hub neck, said drive hub neck having a diameter, the diameter of said drive hub head being greater than the diameter of said drive hub neck;
• a drive shaft connected to said drive hub head that extends forward of said drive hub;
• an outer hub at least partially disposed about said drive hub, said outer hub including:
• an outer hub base having an inner wall that defines a proximal end opening, said drive hub head and at least a portion of said drive hub neck being disposed in the proximal end opening;
• and an outer hub head integral with and disposed adjacent said outer hub base, said outer hub head having a bore through which said drive shaft extends;
• at least one stop member formed of material that yields upon application of pressure, that extends inwardly from the inner wall of said outer hub base, said at least one stop member defining an open section within the outer hub base proximal end opening that has a diameter greater than the diameter of said drive hub neck and less than the diameter of said drive hub head, said stop member being positioned in said outer hub base so that the open section defined by said stop member subtends a portion of said drive hub neck;
• and
• an outer housing that extends forward from said outer hub head that at least partially surrounds said drive shaft.

A cutting accessory for actuation by a powered surgical handpiece, said cutting accessory comprising:

• a drive hub, said drive hub formed with at least one geometric feature for causing said drive hub to engage an output shaft of a handpiece motor;
• a drive shaft that extends forward from said drive hub;
• an outer hub disposed over said drive hub, said outer hub having:
• an outer hub base that has an inner wall that defines an outer hub proximal end opening, said drive hub being at least partially seated in the outer hub proximal end opening;
• and an outer hub head disposed adjacent said outer hub base, said outer hub head having a bore through which said drive shaft extends;
• a seal formed of flexible material located adjacent the inner wall of said outer hub base, said seal shaped to have:
• first and second longitudinally spaced apart end sections, each said end section abutting the inner wall of said outer hub base;
• a main section that extends between said end sections, said main section having an outer surface that is spaced inwardly relative to said end sections so that the main section has an outer surface that is spaced inwardly of the inner wall of said outer hub base;
• an RFID chip and coil assembly disposed between the inner wall of said outer hub base, said seal main section and said seal end sections;
• and
• an outer housing that extends forward from said outer hub head and that at least partially surrounds said drive shaft.