Bone plate arrangement
First Claim
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1. A bone plate arrangement, comprising:
- a bone plate having generally opposite first and second sides and an opening therethrough,a sleeve to be fixed in the bone plate opening, the sleeve having a bore, a pair of opposite ends, a threaded portion at one end for receiving a nut to be supported on the first side of the bone plate, an a counterflange at the opposite end to be supported on the second side of the bone plate, anda bone screw to be fixed in the sleeve separately from the fixation of the sleeve in the bone plate opening, the bone screw having a longitudinal axis, longitudinally spaced first and second ends, a threaded portion at the first end to be received in a bone, a securing member at the second end for securing the bone screw to said screw, a shaft portion between the threaded portion and the securing member to be journalled in the sleeve, and a collar between the threaded portion and the shaft portion.
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Abstract
A bone plate arrangement consisting of a bone plate with at least one through-opening and a bone screw to be introduced into the through-opening. The bone screw is held in the bone plate by means of a sleeve, which can be fixed in the through-opening of the bone plate independently of the screw. The sleeve can be designed in such a way that it predetermines the angular orientation of the screw relative to the bone plate. If the through-opening in the bone plate is elongate, the position of the bone screw along the through-opening can also be predetermined by the positioning of the sleeve.
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Citations
16 Claims
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1. A bone plate arrangement, comprising:
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a bone plate having generally opposite first and second sides and an opening therethrough, a sleeve to be fixed in the bone plate opening, the sleeve having a bore, a pair of opposite ends, a threaded portion at one end for receiving a nut to be supported on the first side of the bone plate, an a counterflange at the opposite end to be supported on the second side of the bone plate, and a bone screw to be fixed in the sleeve separately from the fixation of the sleeve in the bone plate opening, the bone screw having a longitudinal axis, longitudinally spaced first and second ends, a threaded portion at the first end to be received in a bone, a securing member at the second end for securing the bone screw to said screw, a shaft portion between the threaded portion and the securing member to be journalled in the sleeve, and a collar between the threaded portion and the shaft portion. - View Dependent Claims (2, 3, 4, 5, 6, 9)
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- 7. A bone plate arrangement comprising a bone plate having opposite first and second sides and at least one aperture therethrough, a sleeve to be introduced into the aperture, and a bone screw to be fixed in the sleeve, the sleeve having a pair of longitudinally spaced ends, a threaded portion at one end for supporting a nut to be supported on the first side of the bone plate, and a counterflange at the other end to be supported on the second side of the bone plate, the bone screw including a shaft portion which has a pair of longitudinally spaced ends and is journalled for rotation within the sleeve, a threaded portion to be inserted into a bone, a collar between the journalled shaft portion and the threaded portion, and a securing member at the end of the journalled shaft portion which is furthest from the collar for securing the bone screw to said sleeve.
Specification