3D printed monoblock orthopaedic surgical implant with customized patient-specific augment

Patent metadata

Field	Value
Publication number	US-11944549-B2
Application number	US-202117219554-A
Country	US
Kind code	B2
Filing date	Mar 31, 2021
Priority date	Mar 31, 2021
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

An acetabular shell component includes a solid substrate, a porous outer layer coupled to the solid substrate, a porous inner layer coupled to the solid substrate, and an inner bearing coupled to the porous inner layer. One or more adjuncts extend outward from the porous outer layer. Each adjunct includes an outer surface that defines a customized patient-specific negative contour shaped to conform to a positive contour of a patient's bone. A method for manufacturing the acetabular shell component using an additive manufacturing process is also disclosed.

First claim

The invention claimed is:

1. A monoblock acetabular shell component, the shell component comprising:
a solid substrate;
a porous outer layer coupled to the solid substrate, wherein the porous outer layer has a porosity greater than the solid substrate;
a porous inner layer coupled to the solid substrate, wherein the porous inner layer has a porosity greater than the solid substrate; and
an inner bearing coupled to the porous inner layer, wherein the inner bearing comprises a bearing surface and wherein the bearing surface defines a cavity sized to receive an orthopaedic implant component;
wherein the solid substrate or the porous outer layer includes a patient-specific adjunct integrally formed therewith and extending outwardly from the porous outer layer, wherein the patient-specific adjunct comprises an outer surface, and wherein the outer surface defines a customized patient-specific negative contour shaped to conform to a positive contour of a patient's bone; and
wherein each of the solid substrate, the porous outer layer, the porous inner layer, and the inner bearing comprises a ceramic material.

2. The shell component of claim 1 , wherein the solid substrate, the porous outer later, the porous inner layer, and the patient-specific adjunct comprise an additively manufactured component.

3. The shell component of claim 1 , wherein the solid substrate, the porous outer later, the porous inner layer, and the inner bearing have a combined thickness of about 3 millimeters.

4. The shell component of claim 1 , wherein an aperture is defined through the outer surface of the patient-specific adjunct, wherein the aperture is sized to receive a fastener.

5. The shell component of claim 1 , wherein the bearing surface defines a cavity sized to receive a polymeric dual mobility bearing.

6. The shell component of claim 1 , wherein the bearing surface defines a cavity sized to receive a constrained femoral head component.

Assignees

• Depuy Synthes Products Inc

Inventors

• Keefer Ryan C
• Gatrell Bernice A
• Hudson Andrew M
• Wagner Christel M
• Santis Catherine
• Huff Daniel N
• Sade Sr Paul B

Classifications

• A61F2/34 Primary

  Acetabular cups · CPC title

• A61F2/30942

  for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques · CPC title

• A61F2002/30957

  using a positive or a negative model, e.g. moulds · CPC title

• A61F2002/30985

  using three dimensional printing [3DP] · CPC title

• A61F2002/3432

  having apertures for receiving fixation screws · CPC title