Implant, implantation device, implantation method

Patent metadata

Field	Value
Publication number	US-9801673-B2
Application number	US-201615251442-A
Country	US
Kind code	B2
Filing date	Aug 30, 2016
Priority date	Sep 20, 2006
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

An implant suitable for being anchored with the aid of mechanical vibration in an opening provided in bone tissue. The implant is compressible in the direction of a compression axis under local enlargement of a distance between a peripheral implant surface and the compression axis. The implant includes a coupling-in face which serves for coupling a compressing force and the mechanical vibrations into the implant, which coupling-in face is not parallel to the compression axis. The implant also includes a thermoplastic material which, in areas of the local distance enlargement, forms at least a part of the peripheral surface of the implant.

First claim

What is claimed is:

1. An implant suitable for being anchored with the aid of mechanical vibration in an opening in bone tissue or other hard tissue, the implant defining an axis and the implant further comprising a coupling-in face for applying a compressing force and the mechanical vibration, said coupling-in face being not parallel to the axis,
the implant comprising at least two implant components, the implant components being configured and arranged to be pressed against each other along a common contact interface when a compressing force acts on the implant along the axis and to thereby undergo a relative shifting movement along the common contact interface,
wherein the implant further comprises a thermoplastic material forming at least a part of a peripheral surface portion,
and wherein the compressing force applied along the axis causes an enlargement of a distance between the peripheral surface portion of the implant and the compression axis when the thermoplastic material is in a solid state.

2. The implant according to claim 1 , wherein the common contact interface extends obliquely to the axis.

3. The implant according to claim 2 , wherein the common contact interface is conical.

4. The implant according to claim 1 , wherein the compressing force causes at least one of the components to be spread.

5. The implant according to claim 1 , wherein the coupling-in face is at least partly even and oriented perpendicular to the compression axis.

6. The implant according to claim 1 , wherein the implant components, prior to implantation, are separate or linked via predetermined breaking or melting points.

7. The implant according to claim 1 , wherein surfaces of the implant components consist of thermoplastic material at least to the extent that the implant components are able to be welded together by the effect of the mechanical vibrations and the compressing force.

8. An implant suitable for being anchored with the aid of mechanical vibrations in an opening in bone tissue or other hard tissue, the implant extending along an axis between a proximal end face and a distal end face, wherein the implant comprises a plurality of components, one of the components comprising the proximal end face and another one of the components comprising the distal end face, wherein a peripheral surface portion of the implant comprises a thermoplastic material, wherein the components are configured and arranged relative to one another so that when the implant is compressed by a compressing force between the proximal and distal end faces while the thermoplastic material is in a solid state, the peripheral, surface portion is pressed outwardly away from the axis, whereby the implant is capable of being anchored in the opening in the bone tissue or other hard tissue by applying the compressing force and by coupling mechanical vibration into the implant via the proximal end face or the distal end face or both, and by thereby pressing the peripheral surface portion against a lateral wall of the opening and at least partially liquefying the thermoplastic material where in contact with the lateral wall and pressing the liquefied thermoplastic material into structures of the bone tissue or other hard tissue to form, after re-solidification, a positive fit connection with the lateral walls.

9. The implant according to claim 8 , wherein the components are designed to be shifted relative to each other by the compressing force along shifting surfaces extending obliquely to the compression axis.

10. The implant according to claim 8 , wherein the compressing force causes at least one of the components to be spread.

11. The implant according to claim 8 , wherein the components are weldable to each other.

12. The implant according to claim 8 , wherein at least one of the components essentially has a shape of a hollow cone or hollow truncated cone.

13. The implant according to claim 8 , wherein at least one common contact interface between the components has a shape of a lateral surface of a truncated cone.

Assignees

• Woodwelding Ag

Inventors

• Aeschlimann Marcel
• Torriani Laurent
• Lehmann Mario
• Mayer Jörg

Classifications

• A61F2002/30451

  soldered or brazed or welded · CPC title

• A61F2002/30367

  with additional means for preventing said rotation · CPC title

• A61F2002/30205

  conical · CPC title

• A61F2/3601

  for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices (non-prosthetic internal fixation devices for the femoral head or neck A61B17/74) · CPC title

• A61F2002/3052

  unrestrained in only one direction, e.g. moving unidirectionally · CPC title