Assembly comprising an implantable part designed to be fastened to one or more bones or bone portions to be joined, and at least one screw for fastening the implantable part to said bone(s)

a technology of implantable parts and assemblies, applied in the field of assembly comprising an implantable part designed, can solve the problems of assembly assembly imposing an implantation, assembly has a noteworthy risk of unscrewing one or more screws, and assembly is not always very effective,

Inactive Publication Date: 2014-03-06
COMPAGNIE FINANCIERE & MEDICALE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0029]An angulated orientation of the screw is thus prohibited on the side of the hole opposite that on which said second sector is located. Due to this possibility for selective angulation of the screw, resulting from the arrangement of the notches in c...

Problems solved by technology

In the first case, the base of the plate has the drawback of imposing an implantation direction on the screw and therefore prohibiting implantation directions other than that which is imposed.
Such assemblies also have the drawback of imposing an implantation direction on the screw determined by said engagement.
Furthermore, such assemblies have...

Method used

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  • Assembly comprising an implantable part designed to be fastened to one or more bones or bone portions to be joined, and at least one screw for fastening the implantable part to said bone(s)
  • Assembly comprising an implantable part designed to be fastened to one or more bones or bone portions to be joined, and at least one screw for fastening the implantable part to said bone(s)
  • Assembly comprising an implantable part designed to be fastened to one or more bones or bone portions to be joined, and at least one screw for fastening the implantable part to said bone(s)

Examples

Experimental program
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Effect test

Embodiment Construction

[0046]FIG. 1 shows an assembly 1 comprising an implantable part 2 designed to be fastened to one or more bones or bone portions to be joined, and several screws 3 for fastening said implantable part 2 to said bone(s).

[0047]For the purposes of a purely diagrammatic illustration, the implantable part 2 has been shown in FIG. 1 as a rectangular plate with any shape whatsoever. FIGS. 11 and 12 show that this implantable part may be a base 2 for fastening a glenoid to a shoulder blade 100 or a part forming a convex joint surface called “metaglene” or “glenosphere” (not shown); this implantable part may also be a humeral cortical plate 2 (cf. FIGS. 19 and 20) or cortical plate for the lower end of the radius (cf. FIGS. 21 to 23).

[0048]The plate 2 shown in FIG. 1 comprises a plurality of aligned holes 4, each of which is designed to receive a screw 3.

[0049]As shown more particularly in FIGS. 2 and 3, each hole 4 is cylindrical and tapped, and comprises six notches 5 extending radially, reg...

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Abstract

An assembly including an implantable part designed to be fastened to at least one bone or bone portions to be joined and at least one screw for fastening the implantable part to the at least one bone or bone portions. The implantable part includes at least one tapped hole and the screw includes a head designed to be engaged in the tapped hole. The tapped hole is cylindrical and includes at least one radial notch emerging in a surface of the implantable part through which the screw is designed to be engaged in the tapped hole. The radial notch produces an interruption in the tapping included by the tapped hole. The head of the screw is conical, with an apical angle of between 15 and 25°.

Description

FIELD OF THE INVENTION[0001]The present invention relates to an assembly comprising an implantable part designed to be fastened to one or more bones or bone portions to be joined, and at least one screw for fastening the implantable part to said bone(s). Said implantable part may in particular be a fastening base for fastening part of a joint prosthesis to a bone, in particular a fastening base for fastening a glenoid to shoulder blade in a total shoulder prosthesis; the implantable part may also be a cortical plate or any other piece of arthrodesis or osteosynthesis equipment.BACKGROUND OF THE INVENTION[0002]It is well known to use screws to fasten implantable parts such as bases used to fasten joint prosthesis components or cortical or similar plates serving to perform an arthrodesis or osteosynthesis of one or more bones.[0003]A very traditional base or plate comprises smooth cylindrical holes in which the fastening screws are designed to be engaged. Each hole may be adjusted to ...

Claims

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Application Information

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IPC IPC(8): A61B17/86A61B17/80
CPCA61B17/8057A61B17/8061A61B17/8066A61B17/86A61B17/8605A61B17/8615A61B17/8625A61B17/863
Inventor MARTIN, JEAN-JACQUES
Owner COMPAGNIE FINANCIERE & MEDICALE
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