Patent ID: 7507248

Claim:
An osteosynthesis device comprising: a bar comprising a rounded surface and a transversal bearing surface, the rounded surface and the transversal bearing surface extending a first length longitudinally along a first portion of the bar, the bar having a first cross-sectional circumference along the first portion of the bar, the first cross-sectional circumference of the bar having a convexity along the rounded surface of the bar, and the transversal bearing surface being selected from the group consisting of surfaces that are generally flat in the cross-sectional circumference, surfaces that have a convexity less than the convexity along the rounded surface of the bar, and surfaces that are concave in the cross-sectional circumference; and an implant comprising a body, a bone anchor, a clamp movably engageable with the body of the implant, the clamp comprising a bearing surface configured substantially complementary to the transversal bearing surface, an axis, and a loosening direction, and a channel having an opening along a side of the implant configured to receive the first portion of the bar with the clamp at least partially engaged with the body of the implant, the opening of the channel defining an extension direction that forms a non-null angle with a plane perpendicular to the axis of the clamp, said angle being oriented in the loosening direction of the clamp; and an internal wall comprising a planar surface configured complementary to a planar face disposed on the bar, the planar surface forming a non-null acute angle with a plane perpendicular to the axis of the clamp, said angle being oriented toward the opening of the channel.