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US 8,784,419 B2Granted
Adaptable bone fixation plate
AssigneeDePuy Synthes Products, Inc.
InventorsTom Overes, Robert Frigg
Life of this patent
Estimating the term…
Abstract
An adaptable bone fixation plate and bone fixation system are configured to provide an anterior spinal plate with anterior pedicle screws includes a first plate section adjustably coupled to a second plate section using an arrangement that provides both superior-inferior adjustability of the plate sections as well as lateral adjustability of the plate sections to orient the first and second plate sections with respect to the desired orientation and disposition of two or more bone screws.
Claims31
A bone fixation system configured to be fixed to at least one underlying bone, the bone fixation system comprising:
- a first plate section defining a first body that extends along a central axis between a superior end and an inferior end such that the superior end and the inferior end are spaced from each other in an inferior-superior direction, the first body defining a first side wall and a second side wall that each extend between the superior end and the inferior end such that the first side wall and the second side wall are spaced from each other in a lateral direction, the first body defining opposed inner and outer surfaces and a screw hole extending through the inner and outer surfaces, and the first body including at least one first rib extending from at least one of the inner and outer surfaces;
- a second plate section defining a second body that extends along a central axis between a superior end and an inferior end, the second body defining a channel configured to receive a portion of the first body such that the first body is initially translatable within the channel along both the inferior-superior direction and the lateral direction, the channel defined by opposed interior surfaces, wherein the second body defines at least one groove extending into at least one of the interior surfaces, the at least one groove being configured to mate with the at least one rib;
- a fastener configured to lock the rib in the groove so as to prevent the first plate section from translating relative to the second plate section.
A bone fixation plate configured to be fixed to at least one underlying bone, the bone fixation plate comprising:
- a first plate section defining a first body that defines a first side wall and a second side wall that are spaced from each other in a lateral direction, the first body extends along a central axis that extends between a superior end and an inferior end such that the superior end is spaced from the inferior end in a superior direction, and the inferior end is spaced from the superior end in an inferior direction, the first body defining i) opposed inner and outer surfaces defining a thickness therebetween, ii) a head portion and an insert portion, wherein the thickness of the head portion is greater than the thickness of the insert portion, iii) a first plurality of ribs projecting from the inner surface of the insert portion and extending in the lateral direction and in the inferior direction in a direction from the second side wall toward the first side wall, iv) a second plurality of ribs projecting from the outer surface of the insert portion and extending in the lateral direction and in the superior direction in a direction from the second side wall toward the first side wall, and v) at least one screw hole extending through the head portion;
- a second plate section defining a second body that extends along a central axis between a superior end and an inferior end, the second body defining a receptacle portion and a head portion,
- the head portion defining at least one screw hole extending therethrough;
- and
- the receptacle portion including first and second arms that are spaced so as to present respective first and second interior surfaces that define a channel therebetween, the first arm including a first plurality of grooves extending into the corresponding inner surface, the second arm including a second plurality of grooves extending into the corresponding inner surface, wherein the first and second pluralities of grooves are configured to mate with the first and second pluralities of ribs so as to lock the first and second plate sections with respect to relative movement.
2 more elements
Dependencies are inferred from the claim text.