Osteosynthesis plate

The invention claimed is: An osteosynthesis plate comprising: The osteosynthesis plate of claim 1, wherein the notch has a longitudinal axis that substantially coincides with a straight line formed by midpoints of the first and second fastener holes. The osteosynthesis plate of claim 1, wherein the notch has a longitudinal axis that is parallel to and displaced from a straight line formed by midpoints of the first and second fastener holes.

Osteosynthesis plate

Osteosynthesis plate-staple intended to produce by elastic reaction a compression of bone fragments on either side of a fracture line, said plate-staple comprising: The plate-staple according to claim 1, wherein one of said side legs has a shape adapted to penetrate the metaphysis of a bone, and another of said side legs has a shape adapted to be implanted in a cortical bone.

The Role of Minimally Invasive Plate Osteosynthesis in Rib Fixation: A Review - ScienceCentral

The plate-staple according to claim 2, wherein: The plate-staple according to claim 3, wherein said at least one finger comprises a cross-section formed of three rounded ridges positioned in an equilateral triangle including one side substantially corresponding to a flat internal part of said at least one finger, and an apex of said equilateral triangle opposite said one side substantially corresponding to a longitudinal ridge stiffening an external part of said leg, with the remaining two apexes corresponding to lateral edges of said at least one finger.

The plate-staple according to claim 3, wherein said at least one finger comprises two fingers protruding from said cross member, said two fingers extending in planes that are parallel to a plane passing through said one of said side legs and said internal surface of said cross member, and said two fingers extending in longitudinal directions that are divergent.

The plate-staple according to claim 5, wherein each of said two fingers comprise a cross-section formed of three rounded ridges positioned in an equilateral triangle including one side substantially corresponding to a flat internal part of said each finger, and an apex of said equilateral triangle opposite said one side substantially corresponding to a longitudinal ridge stiffening an external part of said leg, with the remaining two apexes corresponding to lateral edges of each said finger.

The plate-staple according to claim 5, wherein said cross member is stepped-shaped, and comprises a lower step comprising a convex internal surface and an upper step comprising a concave internal surface. The plate-staple according to claim 5, wherein said cross member is stepped-shaped, and comprises a lower step comprising a convex internal surface and an upper step comprising a flat internal surface.

The plate-staple according to claim 1, wherein each of said side legs comprises an end spaced from said cross member and an internal surface, and further comprising a bevel on each of said side legs, each said bevel being positioned on said internal surface and at said end of a side leg, and comprising a sloping surface facing a bevel on a corresponding side leg.

The plate-staple according to claim 1, wherein said interior surface of said cross member comprises an internal surface that is sufficiently rough to assist development of microvascularization between the staple and the bone.

The plate-staple according to claim 10, wherein said internal surface of said cross member comprises a knurled or diamond cut finish.

The plate-staple according to claim 1, wherein said interior surface of said cross member comprises an internal surface that is sufficiently rough and retentive to receive a coat of hydroxyapatite before implantation. The plate-staple according to claim 12, including a coat of hydroxyapatite on said internal surface.

The plate-staple according to claim 1, wherein said side legs comprise an interior surface, and said anti-return elements are positioned on said interior surface of said side legs.

The plate-staple according to claim 14, wherein said anti-return elements comprise inwardly pointing ridges. The plate-staple according to claim 1, wherein said side legs comprise an interior surface and an exterior surface, and said side legs are connected to said cross member by rounded internal and external zones.

The plate-staple according to claim 1, wherein each of said openings comprises a recess having a shape adapted to receive a head of a fixing element in a general form of a cylindro-hemisphere. The plate-staple according to claim 1, wherein said cross member is step-shaped, and comprises a lower step comprising a convex internal surface about half the length of said cross member and an upper step comprising a concave internal surface about half the length of said cross member.

The plate-staple according to claim 1, wherein said cross member is step-shaped, and comprises a lower step comprising a convex internal surface about half the length of said cross member and an upper step comprising a flat internal surface.

The plate-staple according to claim 18 wherein said lower step and said upper step have widths different with respect to each other. The plate-staple according to claim 19, wherein said lower step and said upper step have widths different with respect to each other.

The plate-staple according to claim 1, wherein said side legs and said cross member are unitary. The plate-staple according to claim 1, wherein said one portion of said length and interior surface of said cross member is a lowermost length and surface of said cross member, and wherein said lowermost length and surface extends immediately from one of said side legs.

The plate-staple according to claim 1, wherein said cross member comprises a lower step and an upper step, said lower step constituting said portion of said length of said cross member having said convex profile. The plate-staple according to claim 25, wherein said convex profile of said lower step extends immediately from one of said side legs.

The plate-staple according to claim 25, wherein said cross member further comprises a transition portion between said lower step and said upper step. The plate-staple according to claim 25, wherein said lower step is immediately adjacent to said upper step.

An osteosynthesis staple intended to produce by elastic reaction a compression of bone fragments on either side of a fracture line, said staple comprising: The plate-staple according to claim 29 wherein said side legs and said cross member are unitary.

The plate-staple according to claim 29, wherein said one portion of said length and interior surface of said cross member is a lowermost length and surface of said cross member, and wherein said lowermost length and surface extends immediately from one of said side legs.

Field of the Invention The present invention concerns a new staple that can be easily used both as a staple and as an osteosynthesis plate specifically designed for tibia and femur osteotomies.

The cross member is pierced by at least one hole approximately parallel to the side legs and intended to take at least one additional fixing device.

The side legs of the staple have, firstly, at their end, a sharpened part pointing approximately towards the inside and, secondly, on their external surface a series of teeth, the ridges of which point approximately upwards. The internal part of the cross member between the side legs of the staple has a smooth, flat, horizontal surface.

In addition, the cross member is connected to the side legs by internal angular sections. For one of its applications, the staple is used as an osteosynthesis device and, consequently, it is intended to be sunk into the bone in such a way that its cross member bears on the bone in the region of the fracture.

This staple clearly has a number of disadvantages for osteosynthesis, notably that, once it is in place, the staple tends to spread by reaction and consequently produce an opposite effect to that desired, which is to draw together and anchor the bone fragments to be fused. In fact, the sharpened section of each of the side legs of the staple has a point directed towards the interior which has the effect of forcing the legs towards the interior when penetrating the bone and thus causing an outwards reaction by elastic restitution.

This reaction will in practice tend to separate the bone fragments. It should be noted that the arrangement of the series of teeth on the external surfaces of the side legs reinforces this separating effect by reaction.

Also, if the staple does not have any additional fixing devices, it will be displaced not only by the progressive formation of callus bony substance produced in the outer part of the bone which progressively fuses the bone fragments together around the side legs, but also by the effect of the aforesaid reaction which naturally tends to eject it from the bone.

There is another bone surgery staple as described in Swiss patent CH-A In this version the sharpened ends of the legs are such that the sloping surfaces forming the bevels face each other, which is a considerable advantage over the previous staple. However, once implanted, this staple does not provide any elastic compression of the bone fragments.

Moreover, none of the earlier designs takes account of the bone structure into which the staples are to be implanted.Osteosynthesis plate-staple for osteotomy, including symmetrical or asymmetrical side legs having sharpened free ends, and being joined by a cross member.

A set of at least two osteosynthesis plates (2 g, 2 h) for implantation, anatomical reduction and internal splinting of bone fragments, in particular after fractures of the distal humerus.

Background

The two osteosynthesis plates (2 g, 2 h) according to the invention are provided with drilled holes (3 a, 3 b, 3 c) which are arranged or formed so that the . Prospective Evaluation of Minimally Invasive Plate Osteosynthesis in 36 Nonarticular Tibial Fractures in Dogs and Cats (Guiot LP, Dejardin LM, Vet Surg.

; ) 28 dogs, 8 cats Mean healing time of 45 days. · Given the continuing improvements in nail implants, intramedullary nailing could become an alternative treatment option to osteosynthesis for the treatment of fractures in both forearm bones, with the proper indication.

The aim of this prospective study was to evaluate and compare the results of timberdesignmag.com Osteosynthesis plate-staple for osteotomy, including symmetrical or asymmetrical side legs having sharpened free ends, and being joined by a cross member.

The legs are substantially mutually longitudinal divergent in the direction of their free ends so that the ends are urged away from one another when the staple is implanted, whereby bone fragments on either side of the fracture line are timberdesignmag.com Keywords: Distal radius fracture, minimally invasive plate fixation, palmar locking plate I NTRODUCTION Distal radius fracture is a common injury in all age groups.

Osteosynthesis plate
Osteosynthesis Plate, Osteosynthesis Plate Suppliers and Manufacturers at timberdesignmag.com