# US 7,611,513 B2 · Greater trochanteric re-attachment device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,611,513 B2
- Document ID: US7611513B2
- Status: Granted
- Kind: B2
- Application number: 10/813,213
- Filed: 2004-03-30
- Published: 2004-11-25
- Granted: 2009-11-03
- Earliest claimed: 2003-04-02
- Assignees: Benoist Girard SAS
- Inventors: Nicolas Delogé; Arnaud Aux Epaules; Gérard Asencio
- Web page: https://patentgrep.com/patent/US7611513B2

## CPC

- A61F 2/30739: {Devices connected to the proximal part of an endoprosthetic femoral shaft for reinforcing or replacing the trochanters, e.g. the greater trochanter (proximal parts of endoprosthetic femoral shafts A61F2/367; non-prosthetic trochanteric devices A61B17/74)}
- A61B 17/74: Devices for the head {or neck or trochanter} of the femur {(trochanteric devices connected to the proximal part of an endoprosthetic femoral shaft A61F2/30739; endoprosthetic internal fixation devices for the head or neck of the femur A61F2/3601)}
- A61B 17/82: for bone cerclage {(apparatus for manipulating wires or straps A61B17/8861; wires, bands or straps other than cerclage A61B17/842)}
- A61B 17/842: {Flexible wires, bands or straps (A61B17/72, A61B17/82, A61B17/86 take precedence)}
- A61B 17/86: Pins or screws {or threaded wires; nuts therefor (A61B17/72 take precedence)}
- A61F 2/32: for the hip
- A61F 2/34: Acetabular cups
- A61F 2/36: Femoral heads {; Femoral endoprostheses}
- A61F 2/367: {Proximal or metaphyseal parts of shafts (trochanteric devices connected to said proximal parts A61F2/30739)}
- A61F 2/3676: {Distal or diaphyseal parts of shafts}
- A61F 2/4607: {of hip femoral endoprostheses}
- A61F 2002/30433: {using additional screws, bolts, dowels, rivets or washers e.g. connecting screws}
- A61F 2002/30571: {Leaf springs}
- A61F 2002/30616: {Sets comprising a plurality of prosthetic parts of different sizes or orientations}
- A61F 2002/3069: {Revision endoprostheses}
- A61F 2002/30797: {internally-threaded}
- A61F 2002/3611: {Heads or epiphyseal parts of femur}
- A61F 2002/3625: {Necks}
- A61F 2002/365: {Connections of heads to necks}
- A61F 2002/4619: {for extraction}
- A61F 2220/0041: using additional screws, bolts, dowels or rivets, e.g. connecting screws
- A61F 2250/0064: Sets comprising a plurality of prosthetic parts of different sizes
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## 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.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The greater trochanter re-attachment device as set forth in claim 1 wherein the attachment means comprises a threaded screw adapted for insertion in a screw threaded socket in a proximal shoulder of the femoral prosthesis with which it is to be used.

### Claim 3 (depends on 1)

The greater trochanter re-attachment device as set forth in claim 1 wherein said adjustable securing means are in the form of one or more elongated flexible ties.

### Claim 4 (depends on 3)

The greater trochanter re-attachment device as set forth in claim 3 wherein the elongated flexible tie is in the form of a wire or ribbon.

### Claim 5 (depends on 1)

The greater trochanter re-attachment device as set forth in claim 1 wherein the bracket has a second portion which when in use extends over the proximal external surface of the greater trochanter.

### Claim 6 (depends on 5)

The greater trochanter re-attachment device as set forth in claim 5 wherein the first bracket portion has two arms which are substantially parallel to each other, each arm having a curved re-entrant shape forming the second bracket portion for extending over a proximal end of the greater trochanter and having a bifurcated free end provided with said adjustable securing means.

### Claim 7 (depends on 6)

The greater trochanter re-attachment device as set forth in claim 6 wherein the bifurcated free ends of each arm include the guide for the adjustable securing means.

### Claim 8 (depends on 7)

The greater trochanter re-attachment device as set forth in claim 7 wherein the bracket is made from a synthetic plastics material or metal which is compatible with the requirements of the human body.

### Claim 9 (depends on 8)

The greater trochanter re-attachment device as set forth in claim 8 wherein the bracket is made from a resilient material which can be deformed to fit the bracket to the shape of the greater trochanter with which it is used.

### Claim 10 (depends on 1)

The greater trochanter re-attachment device as set forth in claim 1 in combination with a femoral prosthesis.

### Claim 11 (depends on 10)

The greater trochanter re-attachment device as set forth in claim 10 wherein the femoral prosthesis is provided with a threaded bore in a proximal shoulder for receiving the attachment means.

### Claim 12

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.

### Claim 13 (depends on 12)

The device as set forth in claim 12 wherein said bracket includes two spaced apart arms extending distally along the outer surface of the femur.

### Claim 14 (depends on 13)

The device as set forth in claim 13 wherein said arms extend generally parallel to a longitudinal axis of the femur and said guide extending generally perpendicular thereto.

### Claim 15 (depends on 12)

The device as set forth in claim 12 wherein the femoral component includes a threaded bore and the bracket has an opening alignable with said threaded bore.

### Claim 16 (depends on 15)

The device as set forth in claim 15 wherein the securing element is a threaded bolt insertable through said opening in the bracket into said threaded bore.

### Claim 17

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.

### Claim 18 (depends on 17)

The system as set forth in claim 17 wherein the bracket has a portion with a curved re-entrant shape for extending over a proximal end of the greater trochanter.