Greater trochanteric re-attachment device
AssigneeBenoist Girard SAS
InventorsNicolas Delogé, Arnaud Aux Epaules, Gérard Asencio
Life of this patent
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Abstract
A greater trochanter re-attachment device for use in transfemoral revision surgery which comprises a bracket adapted to be attached to a femoral prosthesis with which it is to be used. The bracket has adjustable clamping elements adapted to extend from the brackets and pass around the segment of bone containing the greater trochanter and which when secured in position holds the greater trochanter in position in relation to the femoral prosthesis.
Claims18
A greater trochanter re-attachment device for use in transfemoral revision surgery comprising an attachment means adapted for securing the device to a proximal end of a femoral prosthesis with which it is to be used, a bracket having a first portion for extending distally along the femur and an adjustable securing means adapted to extend through a guide on the first portion of the bracket and around a flap of bone containing the greater trochanter and which securing means, when secured in position, holds the greater trochanter in position in relation to the femoral prosthesis wherein the guide consists of a multiplicity of slits through the first portion spaced at intervals therealong intermediate first and second sides of the first portion and multiplicity of outwardly extending sections deformed outwardly of a bone surface on the first side of each slit along the bracket first portion, each of the outwardly extending sections of the bracket first portion extending away from a bone contacting surface of the bracket, the securing means extending below the outwardly extending section and above a bone contacting section of the first portion on the second side of the slits.
A device for securing bone segments of a proximal femur after implantation of a prosthetic femoral component, comprising:
- a bracket for engaging a bone segment of the proximal femur, the bracket including at least one arm extending distally along an outer surface of the femur, the arm including a guide;
- a securing element for securing said bracket to a femoral component extending through the guide;
- at least one band having first and second ends extending through the guide in said arm in a circumferential direction around the femur wherein the guide consists of a multiplicity of slits through the arm spaced at intervals thereon intermediate first and second sides of the arm, the slits spaced by flat bone-contacting sections and a multiplicity of outwardly extending sections of the at least one arm, the outwardly extending section of the at least one arm extending away from a bone contacting surface, the band extending below the outwardly extending section and above a bone contacting section of the arm on the second side of the slits;
- and
- a clamp for joining said first and second ends of said band and preventing relative movement therebetween.
A system for clamping bone segments of a resected proximal femur around a femoral component comprising:
- a femoral component having a stem extending along a longitudinal axis and having a threaded bore at a proximal end thereof;
- a bracket for engaging a bone segment of the proximal femur, the bracket including a pair of generally parallel arms extending from an attachment portion;
- a threaded coupling element for coupling the attachment portion of the bracket to the threaded bore of the femoral component;
- and
- at least one elongated clamping element for extending circumferentially around the femur in a direction transverse to said longitudinal axis after said bracket engages said bone segment to clamp said bone segments around the femoral component wherein each generally parallel arm has a guide therein for receiving the at least one elongated clamping element wherein the guide consists of a multiplicity of slits spaced at intervals through each arm located intermediate first and second sides thereof and the slits spaced by flat bone-contacting sections, a multiplicity of outwardly extending sections deformed away from a bone surface on the first side of each slit of each arm each extending away from a bone contacting surface of the bracket , the elongated clamping element extending below the outwardly extending section of each arm and above a bone contacting section of each arm on the second side of each slit.
Dependencies are inferred from the claim text.