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US 8,608,745 B2Granted
System, apparatus, and method for cutting bone during an orthopaedic surgical procedure
AssigneeDePuy Synthes Products, Inc.
InventorsJose F. Guzman, Gordon Dodds
Life of this patent
Estimating the term…
Abstract
A bone saw tool includes a bone saw and a bone saw blade assembly. The bone saw blade assembly includes a bone saw blade and a bone saw blade guard. The bone saw blade guard is movable to an extended position to reduce the cutting effectiveness of the bone saw blade and/or the maximum cutting depth of the bone saw blade. The bone saw may be configured to activate the bone saw blade guard in response to a signal received from a computer system when the bone saw is moved outside a predetermined cutting region.
Claims21
A bone saw blade assembly for use with a bone saw, the bone saw blade assembly comprising:
- an elongated hone saw blade having (i) a cutting end having a number of elongated cutting teeth configured for oscillatory cutting and (ii) a mounting end opposite the cutting end and configured to be coupled with a chuck of the bone saw, wherein each elongated cutting tooth is spaced apart from an adjacent elongated cutting tooth to define an elongated slot therebetween;
- and
- an elongated bone saw blade guard coupled to the bone saw blade and movable with respect to the bone saw blade in a longitudinal direction toward the cutting end of the bone saw blade from a retracted position to an extended position, the bone saw blade guard reducing the cutting effectiveness of the bone saw blade when located in the extended position and comprising a lateral band coupled to each of the elongated cutting teeth and each of the plurality of slats,
- wherein the elongated bone saw blade guard comprises (i) a plurality of slats and (ii) a lateral band coupled to each of the elongated cutting teeth and each of the plurality of slats, each slat positioned in a corresponding elongated slot of the elongated bone saw blade and movable in the longitudinal direction with respect to the plurality of elongated teeth between the retracted position in which the elongated teeth extend beyond each of the plurality of slats and the extended position in which each of the plurality of slats extend beyond each of the plurality of elongated teeth.
1 more element
A bone saw blade assembly for use with a bone saw, the bone saw blade assembly comprising:
- an elongated bone saw blade having (i) a cutting end having a number of cutting teeth configured for oscillatory cutting and (ii) a mounting end opposite the cutting end and configured to be coupled with a chuck of the bone saw;
- and
- an elongated bone saw blade guard coupled to the bone saw blade and movable with respect to the bone saw blade in a longitudinal direction toward the cutting end of the bone saw blade from a retracted position to an extended position, the bone saw blade guard reducing the cutting effectiveness of the bone saw blade when located in the extended position,
- wherein the bone saw blade guard comprises a plurality of slats coplanar with the bone saw blade and each of the plurality of slats is positioned in a corresponding slot defined in the bone saw blade and extend beyond an end of the bone saw blade when in the extended position, each of the plurality of slats including a rail protruding outwardly from a sidewall of the slat, the rail being received in a slot defined in a sidewall of an elongated cutting tooth of the bone saw blade.
1 more element
A bone saw blade assembly for use with a bone saw, the bone saw blade assembly comprising:
- an elongated bone saw blade having (i) a cutting end having a number of cutting teeth configured for oscillatory cutting and (ii) a mounting end opposite the cutting end and configured to be coupled with a chuck of the bone saw;
- an elongated bone saw blade guard coupled to the bone saw blade and movable with respect to the bone saw blade in a longitudinal direction toward the cutting end of the bone saw blade from a retracted position to an extended position, the bone saw blade guard reducing the cutting effectiveness of the bone saw blade when located in the extended position, wherein the bone saw blade guard comprises a plurality of slats coplanar with the bone saw blade and each of the plurality of slats is positioned in a corresponding slot defined in the bone saw blade and extend beyond an end of the bone saw blade when in the extended position, each of the plurality of slats including a rail protruding outwardly from a sidewall of the slat, the rail being received in a slot defined in a sidewall of an elongated cutting tooth of the bone saw blade;
- an electrical actuator coupled to the bone saw blade;
- and
- a rod operatively coupled to the electrical actuator and the elongated bone saw blade guard, the rod movable by the electrical actuator to move the elongated bone saw blade guard from the retracted position to the extended position.
2 more elements
A bone saw blade assembly for use with a bone saw, the bone saw blade assembly comprising:
- an elongated bone saw blade having (i) a cutting end having a number of elongated cutting teeth configured for oscillatory cutting and (ii) a mounting end opposite the cutting end and configured to be coupled with a chuck of the bone saw, wherein each elongated cutting tooth is spaced apart from an adjacent elongated cutting tooth to define an elongated slot therebetween;
- and
- an elongated bone saw blade guard coupled to the bone saw blade and movable with respect to the bone saw blade in a longitudinal direction toward the cutting end of the bone saw blade from a retracted position to an extended position, the bone saw blade guard reducing the cutting effectiveness of the bone saw blade when located in the extended position,
- wherein the elongated bone saw blade guard comprises a plurality of slats, each slat positioned in a corresponding elongated slot of the elongated bone saw blade and movable in the longitudinal direction with respect to the plurality of elongated teeth between the retracted position in which the elongated teeth extend beyond each of the plurality of slats and the extended position in which each of the plurality of slats extend beyond each of the plurality of elongated teeth,
- wherein the elongated bone saw blade guard further comprises a cross member and each of the plurality of slats is secured to the cross member and the elongated bone saw blade comprises an inner cavity defined at the cutting end and the cross member is positioned in the inner cavity.
2 more elements
Dependencies are inferred from the claim text.