Slidable bone plate system
First Claim
1. A bone plate system comprising:
- a base plate having two generally parallel elongated screw slots extending therethrough;
two bone screws capable of securing the base plate to a bone by insertion through the screw slots into the bone, each bone screw having a screw head and a threaded portion extending therefrom;
an interference device attached to the base plate and retaining the bone screws while permitting the bone screws to toggle and to controllably slide in the screw slots of the base plate.
5 Assignments
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Accused Products
Abstract
The invention is directed to a bone plate system. The bone plate system comprises a base plate having two generally parallel elongated screw slots extending therethrough. Two bone screws are provided that are capable of securing the base plate to a bone by insertion through the screw slots into the bone. Each bone screw has a screw head and a threaded portion extending therefrom. An interference device is attached to the base plate and retains the bone screws while permitting the bone screws to toggle and to controllably slide in the screw slots of the base plate. This design is particularly useful for joining adjacent vertebral bodies, as it permits controlled settling of the vertebral bodies, thereby enhancing the healing process.
107 Citations
42 Claims
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1. A bone plate system comprising:
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a base plate having two generally parallel elongated screw slots extending therethrough;
two bone screws capable of securing the base plate to a bone by insertion through the screw slots into the bone, each bone screw having a screw head and a threaded portion extending therefrom;
an interference device attached to the base plate and retaining the bone screws while permitting the bone screws to toggle and to controllably slide in the screw slots of the base plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A bone plate system including:
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a base plate having an aperture for location adjacent to a bone member;
a bone screw extending through the aperture for engaging the bone member;
means for permitting movement of the bone screw relative to the base plate and for varying a resistance against the movement as the bone screw moves relative to the base plate. - View Dependent Claims (38, 39, 40, 41)
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42. A bone plate system including:
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a base plate having an elongate slot for location adjacent to a bone member;
a bone screw having a portion for extending into the bone member, a portion extending through the aperture, and a portion engaged for retention of the bone screw; and
a member attached to the base plate at a point adjacent to one end of the slot, the member having a portion extending from the attachment point along the slot and engaged with the engaged portion of the bone screw;
the engaged portion of the bone screw and an area at least partially bounded by the member being sized such that the engaged portion of the bone screw is within an interference fit that is greatest proximate to the attachment point.
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Specification