Osteotomy wedge device, kit and methods for realignment of a varus angulated knee
First Claim
1. An osteotomy device comprising:
- a substantially wedge-shaped body having two principal surfaces angularly offset by an angle A and intersecting to form a vertex, said principal surfaces extending at least in part about a principal plane from said vertex at an insertion end to a drive surface at a drive end, said principal plane containing a drive axis extending from said vertex toward said drive surface, and said drive surface extending at least in part in a direction transverse to said principal plane, wherein at least one of said principal surfaces is adapted to engage mechanically a surface adjacent thereto, wherein at least one of said principal surfaces is a resorbable material, wherein said drive surface is adapted to receive a force in the direction of said drive axis toward said insertion end, and wherein said substantially wedge-shaped body has a portion defining a cannular opening extending from said vertex along said drive axis.
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Accused Products
Abstract
The invention provides an osteotomy device, and kit and methods for realigning varus angulated knees. The device involves a substantially wedge-shaped body having two intersecting principal surfaces angularly offset. These principal surfaces extend in a direction of a drive axis about a principal plane from an insertion end to a drive surface at a drive end. At least one of the principal surfaces is adapted to engage mechanically a surface adjacent thereto. The drive surface is also adapted to receive a force in the direction of the drive axis toward the insertion end. The kit of the present invention includes substantially such an osteotomy device having cannular opening along its drive axis and an osteotomy pin. A method of the invention involves making a transverse incision partially into the tibia; realigning tibial portions above and below the incision with respect to each other to create a predetermined angle A between opposing faces of the incision, thereby creating a wedge-shaped opening; providing a substantially wedge-shaped body having two angularly offset intersecting principal surfaces, wherein at least one of the surfaces is adapted to engage mechanically a surface adjacent thereto; and driving the body into the opening. Another invention method involves making the incision and realigning the tibia substantially as described above followed by positioning an osteotomy pin within the wedge-shaped opening; and placing the substantially wedge-shaped body having a cannular opening along a drive axis within the wedge-shaped opening such that the pin is positioned in the cannular opening of the body.
469 Citations
19 Claims
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1. An osteotomy device comprising:
a substantially wedge-shaped body having two principal surfaces angularly offset by an angle A and intersecting to form a vertex, said principal surfaces extending at least in part about a principal plane from said vertex at an insertion end to a drive surface at a drive end, said principal plane containing a drive axis extending from said vertex toward said drive surface, and said drive surface extending at least in part in a direction transverse to said principal plane, wherein at least one of said principal surfaces is adapted to engage mechanically a surface adjacent thereto, wherein at least one of said principal surfaces is a resorbable material, wherein said drive surface is adapted to receive a force in the direction of said drive axis toward said insertion end, and wherein said substantially wedge-shaped body has a portion defining a cannular opening extending from said vertex along said drive axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A kit for realigning a varus angulated knee that comprises:
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A. a substantially wedge-shaped body having two principal surfaces angularly offset by an angle A and intersecting to form a vertex, said principal surfaces extending at least in part about a principal plane from said vertex at an insertion end to a drive surface at a drive end, said principal plane containing a drive axis extending from said vertex toward said drive surface, and said drive surface extending at least in part in a direction transverse to said principal plane, wherein at least one of said principal surfaces is adapted to engage mechanically a surface adjacent thereto, wherein said drive surface is adapted to receive a force in the direction of said drive axis toward said insertion end, and wherein said body has a portion defining a cannular opening along said drive axis extending from said vertex in said principal plane, and B. an osteotomy pin for placement within said cannular opening. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification