Dual drill guide for a locking bone plate
First Claim
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1. A surgical drill guide assembly comprising:
- a pair of alignment drill tubes each configured to receive and guide a surgical drill bit;
a pair of bushings configured to slidably receive the pair of alignment drill tubes along a fixed medial convergence, the bushings each having a radially expandable forward end configured to engage fastener holes in a bone plate;
an actuation bar;
a drill guide assembly handle coupled to the actuation bar;
a base coupled to the drill guide assembly handle; and
wherein the alignment drill tubes are pivotably connected to the actuation bar and the bushings are configured and dimensioned to expand within the bone plate fastener holes to releasably lock the bushings to the bone plate, such that movement of the actuation bar toward the base urges the drill tubes into the bushings for expansion of the forward ends thus locking the bushings within the fastener holes of the bone plate.
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Abstract
A surgical drill guide assembly for demountable attachment to the fastener holes of a bone plate is provided. The drill guide assembly includes a pair of alignment drill tubes that are aligned with corresponding fastener holes in the bone plate, and a pair of expandable bushings that are configured and dimensioned to engage the fastener holes. The surgical drill guide assembly is releasably lockable to the bone plate.
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Citations
12 Claims
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1. A surgical drill guide assembly comprising:
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a pair of alignment drill tubes each configured to receive and guide a surgical drill bit;
a pair of bushings configured to slidably receive the pair of alignment drill tubes along a fixed medial convergence, the bushings each having a radially expandable forward end configured to engage fastener holes in a bone plate;
an actuation bar;
a drill guide assembly handle coupled to the actuation bar;
a base coupled to the drill guide assembly handle; and
wherein the alignment drill tubes are pivotably connected to the actuation bar and the bushings are configured and dimensioned to expand within the bone plate fastener holes to releasably lock the bushings to the bone plate, such that movement of the actuation bar toward the base urges the drill tubes into the bushings for expansion of the forward ends thus locking the bushings within the fastener holes of the bone plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
the bone plate fastener holes each have a wall thickness defined as the distance between a free-side surface and a bone-side surface of the bone plate; and
the radially expandable forward end of the bushing comprises a shoulder, a neck, and an outwardly projecting rim disposed forward of the neck;
wherein the neck and rim together span a length that is slightly longer than the thickness of the bone plate fastener hole wall and the rim abuts the bone-side surface of the plate.
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12. The combination of the drill guide assembly of claim 1 and a bone plate that includes at least two fastener holes.
Specification