Depuy Synthes Products, Inc.

Synthes Usa, LLC

Synthes Gmbh

Jeffrey W Mast

Kenny Koay

Keith A Mayo

Brett R Bolhofner

Mark P Grady, Jr

Scott Didomenico

Rene Haag

Ralph F Polimeni, Jr

Kaj Klaue

René Haag

John S Sargent

Timothy M Chadwick

Michael H Mackin

Ralph F Polimeni

The present invention is directed to a bone plate and its method of use for reducing a bone fracture, the bone plate having a longitudinal axis, the bone plate comprising an upper surface, a lower surface, a first hole for engaging a head of a first bone anchor. The first hole is configured and adapted to fix a shaft of the first bone anchor along a first axis. A second hole is spaced apart from the first hole along the longitudinal axis. The second hole is for engaging a head of a second bone anchor, and is configured and adapted to fix a shaft of the second bone anchor along a second axis. The first hole and the second hole are configured such that the first axis and the second axis define a single plane and intersect at a point below the lower surface. The shafts of the first and second bone anchors may touch or nearly touch at the point of intersection, such that the first and second bone anchors form a truss.

Bone plate

A bone plate includes (a) a body having a first surface which, in an operative configuration, faces away from a bone on which the plate is to be mounted and a second surface, which in the operative configuration, faces the bone, the body including a first section extending along a first longitudinal axis and a second section extending along a second longitudinal axis angled with respect to the first longitudinal axis; (b) a first hole extending through the body from the first surface to the second surface and defining a first hole axis, the first hole being structured to lockingly engage a head of a first bone anchor inserted therein such that a shaft of the first bone anchor extends along the first hole axis; and (c) a second hole extending through the body and spaced apart from the first hole. The second hole defines a second hole axis and is structured to lockingly engage a head of a second bone anchor inserted therein such that a shaft of the second bone anchor extends along the second hole axis. The first and second hole axes defines a single plane and intersecting at a point on a side of the bone plate facing the second surface.

Methods for implanting bone plates

A device for treating fractures of a bone comprises a plurality of arms, each extending from a proximal end to a distal end and movable in a three-dimensional space, the proximal end of each arm coupled to a frame and a plurality of couplings, each of the couplings coupled to a distal end of each of the plurality of arms, the coupling lockingly receiving a bone fixation element secured to a corresponding bone fragment such that each of the arms is coupled to a corresponding fragment of the bone in combination with a mechanical unit moving each of the arms relative to the frame and a controller receiving data corresponding to a desired final position of the fragments relative to one another and controlling the mechanical unit to move the arms relative to one another to achieve the desired final position of the bone fragments relative to one another.

Robotic arms

A threaded insert is designed to snap into a standard bone plate hole. The insert has an upper section divided into sectors by slots, a lower section having deflectable tabs with external projections, and a central threaded hole. When a standard bone screw is tightened in the insert, the insert rigidly fixes the screw to the plate by collapsing the threads of the insert onto the threads of the screw, and by expanding the sectors of the upper section to clamp the bone plate.

Threaded insert for bone plate screw hole

A lock washer for attaching a bone screw to a bone plate. The lock washer includes a body having a central axis and a borehole having internal threading for receiving the bone screw. The lock washer includes a lower section adapted to abut the surface of a bone, and an upper section shaped to be retained in a plate borehole. An osteosynthetic system including a bone plate having an upper surface, a lower surface to be positioned facing the bone, and a lock washer is also disclosed. In addition, an osteosynthetic bone plate having an upper surface, a lower surface, and boreholes extending through the bone plate from the upper surface to the lower surface is disclosed. Boreholes are provided with hollow protrusions extending beyond the lower surface of the bone plate and having an internal threading for receiving a bone screw.

Osteosynthetic bone plate and lock washer

A lockwasher is provided for attaching a bone screw to a bone plate, thus making up an osteosynthetic system. The washer has a threaded screw hole, a lower section with a surface to be applied to a bone and an upper section shaped to be retained in a plate borehole, the lower section being of less than average width than the upper section.

Lock washer for bone plate osteosynthesis

This screw nut (1) is designed for the rigid fixation of a bone screw (15) to a bone plate (20) having plate holes (21). It has a generally cylindrical body (5,6) with a central axis (2), a central hole (3) with a hole axis (34) and an internal thread (4) designed to receive a bone screw (15). The body (5,6) comprises of a lower section (5), an upper section (6), a lower side (9) and an upper side (10). The profile (7) of the upper section (6) orthogonal to said hole axis (34) is smaller than the profile (8) of the lower section (5) orthogonal to said hole axis (34) and the upper section (6) is shaped to be insertable into the plate hole (21) of the bone plate (20).

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Reno, NV, United States of America

Jeffrey W Mast