Spinal stabilizing and guiding fixation system

Patent metadata

Field	Value
Publication number	US-9241739-B2
Application number	US-200913063323-A
Country	US
Kind code	B2
Filing date	Sep 11, 2009
Priority date	Sep 12, 2008
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

A system to stabilize and guide the growth of the spinal column includes an elongated support member having a width and a length and a guiding connector having a bone connecting portion and a guiding portion. The bone connecting portion secures the guiding connector to a vertebrae and the guiding portion has a bearing element with a passageway adapted to receive the elongated support member. The bearing element permits relative sliding movement of the elongated support element in the passageway of the bearing element. The system may further include a bone fixation element has an elongated support member receiving channel, a locking mechanism and a bone anchoring portion. The bone anchoring portion secures the bone fixation element to bone. The locking mechanism secures the elongated support member in the channel. The guiding connector is moveable along the elongated support member to permit and control the growth of the spinal column along a predetermined path.

First claim

The invention claimed is:

1. A system to stabilize and guide the growth of a spinal column having a first vertebra and a second vertebra, the system comprising:
a cable;
an elongated support member that extends along a longitudinal direction and has an outer surface;
at least one guiding connector having a bone connecting portion and a guiding portion, the bone connecting portion configured and adapted to firmly secure the guiding connector to the first vertebra and the guiding portion having a bearing element defining a first passageway having an inner surface and a second passageway having an inner surface, the second passageway being substantially parallel to the first passageway, each of the first and second passageways being configured to selectively and individually slidably receive a first portion of the elongated support member, the guiding portion further including a transverse opening located between the first passageway and the bone connecting portion, the transverse opening configured to receive the cable, the cable being configured to secure the inner surface of the first passageway to the outer surface of the first portion of the elongated support member, wherein the bearing element permits relative sliding movement of the elongated support element in the first passageway; and
at least one bone fixation element having an elongated support member receiving channel configured to receive a second portion of the elongate support member, the second portion spaced from the first portion along the longitudinal direction, a locking mechanism and a bone anchoring portion, the bone anchoring portion configured and adapted to firmly secure the bone fixation element to the second vertebra to provide a firm anchoring point, and the locking mechanism configured and adapted to firmly secure the second portion of the elongated support member in the channel,
wherein the guiding connector is configured to be moveable along the elongated support member when 1) the at least one guiding connector is anchored to the first vertebra, 2) the at least one bone fixation element is anchored to the second vertebra, and 3) the elongated support member is firmly secured in the channel.

2. The system of claim 1 , wherein the bone connecting portion of the at least one guiding connector comprises at least one of the group of hooks, pins, tacks, stakes, nails, blades, screws and clamps.

3. The system of claim 1 , wherein the bearing element has a front face, a back face, sides, a plurality of passageways extending through the bearing element from the front face to the back face, and a housing surrounding the sides of the bearing element and connecting the bearing element to the bone connecting portion, wherein an interior surface of the bearing element defines the passageways, and is formed of a polymer material.

4. The system of claim 1 , wherein the guiding connector comprises a platform member, at least one bushing, a clamp member and a securing mechanism, wherein the bushing has at least one passageway and has an outer side surface, the platform member and clamp member surround at least a portion of the side surface of the bushing, and the securing mechanism has an unlocked position that permits the bushing to rotate polyaxially with respect to the platform member and the clamp member and a locked position which fixes the position of the bushing with respect to the platform member and the clamp member.

5. The system of claim 1 , wherein the guiding portion further comprises:
a platform member and at least one bushing, the bushing mounted on the platform member, and
wherein the cable comprises first and second ends and extends at least partially around the bushing and secures the bushing on the platform member and to the bone connecting portion.

6. The system of claim 5 wherein the guiding portion further comprises a stop member wherein the cable extends out of the stop member and wraps around at least a portion of the bushing and the cable is adjustably fixedly securable to the stop member to adjust the tension in the cable.

7. The system of claim 1 , wherein the guiding portion comprises a platform member that has at least one flexible wing, the guiding portion further having a connecting portion that attaches the platform member to the bone connecting portion, and the at least one wing is bendable to form at least a portion of the bearing element.

8. The system of claim 7 , wherein the at least one flexible wing includes an inner surface and an outer surface, wherein the cable is configured to extend around the outer surface of the at least one wing and through the transverse opening to secure the elongated support member in the bearing element formed by the at least one wing.

9. The system of claim 7 , wherein the at least one flexible wing includes an inner surface and an outer surface, and the connecting portion pivotally attaches the platform member to the bone connecting portion, wherein the cable extends around the outer surface of the at least one wing to secure the elongated support member in the bearing element formable by the at least one wing.

10. The system of claim 9 , wherein the platform member further comprises a protrusion member and at least two flexible wings wherein the protrusion member and wings form at least a portion of the bearing element for the receipt of at least two elongated support members.

11. The system of claim 1 , wherein the guiding connector is configured to be moveable along the elongated support member to permit and control the growth of the spinal column along a predetermined path, and the predetermined path is defined by the elongated support member.

12. A system to stabilize and guide the growth of a spinal column having a first vertebra and a second vertebra, the system comprising:
a flexible cable having first and second ends;
an elongated support member; and
a guiding connector configured to slidably receive the elongated support member, the guiding connector further comprising a bone connecting portion having a threaded shaft for anchoring the guiding connector to the first vertebra and a guiding portion;
wherein the guiding portion further comprises
a platform member; and
a first flexible wing physically connected to a first side portion of the platform member and a second flexible wing physically connected to a second side portion of the platform member, the second side portion being opposite the first side portion, the first and second flexible wings each having an end, an inner surface, and an outer surface;

a connecting portion that attaches the platform member to the bone connecting portion, the connecting portion defining in part a transverse axial passageway located between the connecting portion and the platform member and designed and configured to accept the flexible cable;
wherein when the flexible cable is positioned within the transverse axial passageway the flexible cable is adjacent the outer surface of both the first and second flexible wings and extends parallel to the first and second wings and the cable is flexible such that the cable can be tightened and bend the first and second flexible wings from an extended configuration where the first and second flexible wings extend outwardly away from the platform member to a curved configuration where the first flexible wing, in conjunction with the platform member, forms a first passageway defined in part by the inner surface of the first flexible wing and where the second flexible wing, in conjunction with the platform member, forms a second passageway defined in part by the inner surface of the second flexible wing;
wherein the first and second passageways are configured to rec

Assignees

• Mueller Marcel
• Labhart Meret
• Depuy Synthes Products Inc

Inventors

• Mueller Marcel
• Labhart Meret

Classifications

• A61B17/846

  Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface (A61B17/72, A61B17/86 take precedence) · CPC title

• A61B17/705 Primary

  for linking adjacent ends of longitudinal elements · CPC title

• A61B17/7041

  with single longitudinal rod offset laterally from single row of screws or hooks (A61B17/7044 takes precedence) · CPC title

• A61B17/704

  the longitudinal element passing through a ball-joint in the screw head · CPC title

• A61B17/7053

  with parts attached to bones or to each other by flexible wires, straps, sutures or cables · CPC title