# US 8,784,454 B2 · Longitudinal implant

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- Number: US 8,784,454 B2
- Document ID: US8784454B2
- Status: Granted
- Kind: B2
- Application number: 13/649,514
- Filed: 2012-10-11
- Published: 2013-01-31
- Granted: 2014-07-22
- Earliest claimed: 2001-03-09
- Assignees: Co-Ligne AG
- Applicants: coLigne AG
- Inventors: Robert Lange
- Web page: https://patentgrep.com/patent/US8784454B2

## CPC

- A61B 17/701: {Longitudinal elements with a non-circular, e.g. rectangular, cross-section (A61B17/7005, A61B17/7007 take precedence)}
- A61B 17/7007: {Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit around the screw or hook heads}
- A61L 31/126: {containing carbon fillers}
- A61B 17/6483: {the connecting rod having a non-circular section}
- A61B 17/7011: {Longitudinal element being non-straight, e.g. curved, angled or branched (adjustable length longitudinal elements A61B17/7014; A61B17/7019 takes precedence, e.g. coil springs)}
- A61B 17/7031: {made wholly or partly of flexible material}
- A61B 17/7032: {Screws or hooks with U-shaped head or back through which longitudinal rods pass}
- A61B 17/7041: {with single longitudinal rod offset laterally from single row of screws or hooks (A61B17/7044 takes precedence)}
- A61B 17/7059: {Cortical plates (A61B17/7007, A61B17/7058 take precedence)}
- A61B 2017/00831: {Material properties}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)

## Abstract

The longitudinal implant is fastened to bones on either side of a damaged area through a connecting device. Said implant is comprised of a filament or fiber composite material and said connecting device is made of a material harder than said longitudinal implant. The longitudinal implant is preferably made of a carbon filament composite material, wherein the filament are encapsulated in a polymer matrix.

## Claims

### Claim 1

A longitudinal implant and connecting device wherein said longitudinal implant is fastenable to bones on either side of a damaged area through said connecting device, said implant and connecting device comprising:
a longitudinal implant made of a filament or fiber composite material, wherein filaments or fibers in said material are oriented to resist biomechanical forces, and
a connecting device made of a material harder than said longitudinal implant,
wherein, said connecting device is operative to squeeze and lock the longitudinal implant into position both by depression caused by a squeezing and increased friction between the harder material of the connecting device and the composite material of the longitudinal implant, and
wherein the implant is a rod or a rail, the rod or rail formed without any openings or slots, wherein filaments or fibers are aligned lengthwise, so that compression will not change their strength characteristics to any extent even when compressed, and
wherein the rod or rail is formed without any recesses, bevels, or slants, and
wherein the filaments are woven, comprising first filaments that are oriented in the axial direction of the implant, and second filaments that are oriented perpendicular to the axial direction of the implant.

### Claim 2 (depends on 1)

The longitudinal implant and connecting device according to claim 1, wherein the longitudinal implant is made of a carbon filament composite material.

### Claim 3 (depends on 1, 2)

The longitudinal implant and connecting device according to claim 1 or 2, wherein the filaments are encapsulated in a polymer matrix.

### Claim 4 (depends on 3)

The longitudinal implant and connecting device according to claim 3, wherein the filaments are encapsulated in PEEK or PEKEKK.

### Claim 5 (depends on 1)

The longitudinal implant and connecting device according to claim 1, wherein said connecting device comprises a screw.

### Claim 6 (depends on 1)

The longitudinal implant and connecting device according to claim 1, wherein said rail has a rectangular cross section.