Surgical tool system
AssigneeStryker Corporation
InventorsSteven Carusillo, Bruce D. Henniges, Milton Barnes
Life of this patent
Estimating the term…
Abstract
A surgical tool system comprising a handpiece and a cutting accessory that is releaseably secured to the handpiece. The handpiece has a gear assembly with two drive heads. The gear assembly turns the drive heads at different rotational speeds relative to each other. The cutting accessory is provided with one of two drive hubs. If the cutting accessory is provided with a first drive hub, the drive hub mates to a first one of the drive heads so as to turn of the speed of that head. If the cutting accessory is provided with a second drive hub, the drive hub mates to the second drive head so as to turn at the speed of that head. Thus, the speed at which the cutting accessory is actuated is a function of the associated drive head.
Claims12
A surgical handpiece for actuating a cutting accessory, said handpiece having:
- a body;
- a motor disposed in said body, said motor having a rotating output shaft;
- a first drive head rotatably disposed in said body and connected to said motor output shaft to rotate upon the rotation of said output shaft;
- a second drive head rotatably disposed in said body, said second drive head having a coupling member designed to receive a cutting accessory drive hub so that the drive hub rotates in unison with the second drive head;
- said first drive head having a coupling member designed to receive a cutting accessory drive hub so that the drive hub rotates in unison with said first drive head while
- a first gear assembly connects said second drive head to said motor output shaft and said first gear assembly drives said second drive head upon actuation of said motor output shaft and drives said second drive head at a rotational speed different than the rotational speed at which said first drive head is rotated.
A surgical handpiece for actuating a cutting accessory, the cutting accessory having a drive hub, said handpiece including:
- a body, said body having a bore;
- a motor disposed in said body, said motor having a rotating output shaft;
- a first drive head rotatably secured in the body bore, said first drive head having at least one member for engaging a cutting accessory drive hub so as to rotate the drive hub;
- a first gear assembly connected between said motor output shaft and said first drive head, said first gear assembly having at least one gear sized to transfer rotational power of said output shaft to said first drive head and to rotate said first drive head at a rotational speed less than the rotational speed of said output shaft;
- a second drive head rotatably secured in the body bore, said second drive head having at least one member for engaging a cutting accessory drive hub so as to rotate the drive hub;
- and
- a second gear assembly connected between said motor output shaft and said second drive head, said second gear assembly having at least one gear for transferring rotational power of said first drive head to said second drive head, said at least one gear being dimensioned to drive said second drive head at a rotational speed less than the rotational speed at which said first drive head is rotated.
Dependencies are inferred from the claim text.