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bone plate

A technology of bone plate and bone surface, which is applied in the field of fixing bone segments and fixing the bone plate of the patient's proximal femur, and can solve problems such as stress peaks

Active Publication Date: 2019-06-21
DEPUY SYNTHES PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a problem arises here, especially in the region of the recesses of the variable-angle through-holes extending in the direction towards the side edges, that stress peaks can occur when bending loads are placed on the bone plate

Method used

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Embodiment Construction

[0028] The present invention may be further understood by reference to the following description and accompanying drawings, wherein like reference numerals refer to similar elements. Exemplary embodiments of the present invention describe bone plates for immobilizing fracture sites. In particular, exemplary embodiments describe bone plates that include recesses that extend through the plate and surround through holes extending through the recesses to reduce, for example, the through holes and lateral directions along the bone plate. Stress peaks in a portion between the sidewalls. While the exemplary embodiments specifically describe a bone plate configured for fixation of a proximal femur, those skilled in the art will appreciate that the bone plate of the present invention is capable of fixating a variety of bones, particularly load-bearing long bones.

[0029] figure 1 An exemplary embodiment of the bone plate 1 is shown in a plan view viewed from the upper side, ie the f...

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Abstract

The present invention provides a bone plate having a first bone-facing surface and an opposite second surface, the bone plate having an elongated shaft portion and a head portion that is shorter and wider than that, at least one of which passes through A hole extends in the shaft portion through the bone plate from the first surface to the second surface. The through hole includes a variable angle portion having a hole axis configured to receive therein the threaded head of the locking screw at a desired angle within an allowable range of angles relative to the hole axis. The second surface has at least one recess extending therein along a portion of the second surface between the sidewall and the through hole, the recess extending around a perimeter of the through hole.

Description

technical field [0001] The present invention relates to the field of surgical devices. In particular, the present invention relates to bone plates for fixation of bone segments, especially the proximal femur of a patient. Background technique [0002] For the stabilization and fixation of fracture sites, it is known to use bone plates which are fixed to the bone by means of suitable fastening elements such as, for example, bone screws, together with pins, bolts or other bone anchors. To ensure that the bone segments are securely fastened to each other and that the bone plate is securely fastened to the bone, the bone anchor must be precisely incorporated into the bone. In particular, the angle at which the bone anchor is driven into the bone is important. [0003] Thus, for example, it is known from EP 1 741 397 A1 to provide a bone plate with a through hole having a variable angle portion which allows the threaded head of the locking screw to be relative to the threaded b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/80
CPCA61B17/80A61B17/8057A61B17/8061
Inventor S.沃夫T.阿伊比
Owner DEPUY SYNTHES PROD INC