Bone plate and tracking device using a bone plate for attaching to a patient's anatomy
First Claim
1. A plate for attaching to an anatomic structure with fasteners, said plate comprising:
- a center axis;
a top surface and a bottom surface opposite said top surface;
openings extending through said top surface and said bottom surface with each opening defined about an inclined axis arranged to incline inwardly from said top surface to said bottom surface at an acute angle relative to said center axis with said openings configured to receive the fasteners along said inclined axis; and
three spikes radially spaced about said center axis and configured to penetrate the anatomic structure and, in conjunction with the fasteners, prevent rotational movement of said plate relative to the anatomic structure,wherein said bottom surface is concave between said spikes and, when said plate is attached to the anatomic structure, said concave bottom surface defines a space configured to accommodate portions of the anatomic structure, and wherein each of said three spikes are positioned on one of a plurality of radial axes extending radially through said center axis with an angle between an adjacent two of said radial axes being 120 degrees.
3 Assignments
0 Petitions
Accused Products
Abstract
A plate for attaching to an anatomic structure. The plate comprises a top surface opposite a bottom surface. An opening through the top and bottom surfaces is configured to receive a fastener to attach the plate to the anatomic structure. The plate comprises spikes configured to penetrate the anatomic structure. With the fastener, the spikes prevent rotational movement of the body relative to the anatomic structure. The bottom surface is concave between the spikes and defines a space configured to accommodate portions of the anatomic structure. Bone pad surfaces are configured to prevent further penetration of the spikes into the anatomic structure when in contact the same. A tracking device for a surgical navigational system can comprise a tracking head coupled to the plate with a mounting arm. The plate, when attached to the anatomic structure, prevents movement of the tracking device relative to the anatomic structure.
226 Citations
28 Claims
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1. A plate for attaching to an anatomic structure with fasteners, said plate comprising:
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a center axis; a top surface and a bottom surface opposite said top surface; openings extending through said top surface and said bottom surface with each opening defined about an inclined axis arranged to incline inwardly from said top surface to said bottom surface at an acute angle relative to said center axis with said openings configured to receive the fasteners along said inclined axis; and three spikes radially spaced about said center axis and configured to penetrate the anatomic structure and, in conjunction with the fasteners, prevent rotational movement of said plate relative to the anatomic structure, wherein said bottom surface is concave between said spikes and, when said plate is attached to the anatomic structure, said concave bottom surface defines a space configured to accommodate portions of the anatomic structure, and wherein each of said three spikes are positioned on one of a plurality of radial axes extending radially through said center axis with an angle between an adjacent two of said radial axes being 120 degrees. - 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)
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26. A plate for attaching to an anatomic structure with fasteners, said plate comprising:
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a center axis; a top surface and a bottom surface opposite said top surface; openings extending through said top surface and said bottom surface and configured to receive the fasteners; and spikes radially spaced about said center axis and configured to penetrate the anatomic structure and, in conjunction with the fasteners, prevent rotational movement of said plate relative to the anatomic structure, wherein said bottom surface is concave between said spikes and, when said plate is attached to the anatomic structure, said concave bottom surface defines a space configured to accommodate portions of the anatomic structure, wherein a center of each of said openings and a corresponding one of said spikes are positioned on one of a plurality of radial axes extending radially through said center axis with an angle between an adjacent two of said radial axes being 120 degrees.
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27. A plate for attaching to an anatomic structure with fasteners, said plate comprising:
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a center axis; a top surface and a bottom surface opposite said top surface; openings extending through said top surface and said bottom surface with each opening defined about an inclined axis arranged to incline inwardly from said top surface to said bottom surface at an acute angle relative to said center axis with said openings configured to receive the fasteners along said inclined axis; and three spikes radially spaced about said center axis and configured to penetrate the anatomic structure and, in conjunction with the fasteners, prevent rotational movement of said plate relative to the anatomic structure; and a center opening coaxial with said center axis, said center opening configured to receive an additional fastener, wherein said bottom surface is concave between said spikes and, when said plate is attached to the anatomic structure, said concave bottom surface defines a space configured to accommodate portions of the anatomic structure. - View Dependent Claims (28)
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Specification