Anterior buttress staple
First Claim
Patent Images
1. A buttress staple for preventing the migration of an implant, comprising:
- a screw locking plate including a first surface, a second, bone-contacting surface opposed to the first surface, and a resilient aperture having a depth extending from the first surface to the second surface, the resilient aperture in the form of a circle or oval having a predefined size in a normal, unexpanded condition, and being configured to expand and contract to receive a screw;
a slit formed in a portion of the plate and extending through a perimeter of the resilient aperture the slit configured to allow the resilient aperture to expand and contract throughout the depth of the resilient aperture; and
an anchoring post extending from the second, bone-contacting surface and configured for insertion into bone.
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Accused Products
Abstract
An anterior buttress staple and screw system is provided that can be used to hold an implant such as a disc prosthesis in place and thereby prevent its migration out of the spinal column. The buttress staple comprises a screw locking plate having a screw locking design that prevents the screw from backing up and away from the plate. The screw is configured to provide an interference fit with the screw locking plate, and can be used as a staple removal tool during revision surgery when the screw locking plate needs to be lifted from the bone surface on which it is attached.
1480 Citations
27 Claims
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1. A buttress staple for preventing the migration of an implant, comprising:
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a screw locking plate including a first surface, a second, bone-contacting surface opposed to the first surface, and a resilient aperture having a depth extending from the first surface to the second surface, the resilient aperture in the form of a circle or oval having a predefined size in a normal, unexpanded condition, and being configured to expand and contract to receive a screw; a slit formed in a portion of the plate and extending through a perimeter of the resilient aperture the slit configured to allow the resilient aperture to expand and contract throughout the depth of the resilient aperture; and an anchoring post extending from the second, bone-contacting surface and configured for insertion into bone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A buttress staple and screw system for preventing the migration of an implant, comprising:
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a buttress staple including a first surface, a second, bone-contacting surface opposed to the first surface, a resilient aperture having a depth extending from the first surface to the second surface, the resilient aperture having a predefined shape and size, and being adapted to expand and contract to receive a screw the resilient aperture leading into a slit, the slit extending through the first and second surfaces, the slit configured to allow the resilient aperture to expand and contract throughout a depth of the resilient aperture, and an anchoring post extending from the second, bone-contacting surface and configured for insertion into bone; and a screw configured to be inserted into bone, the screw having a head region at a proximal end, the head region being configured to be secured within the resilient aperture, and an elongated body extending from the head region to a distal end of the screw, the elongated body including a threaded portion and a contact band extending around a circumference of the screw and being disposed proximal to a proximal-most thread, the contact band having a diameter that is greater than a diameter of the resilient aperture in a non-expanded condition. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification