Patient specific anatomically correct implants to repair or replace hard or soft tissue

• US 20060136058A1
• Filed: 12/19/2005
• Published: 06/22/2006
• Est. Priority Date: 12/17/2004
• Status: Abandoned Application

• Current Assignee: William Pietrzak
• Original Assignee: William Pietrzak
• Inventors: Pietrzak, William
• Application Number:
  US11/312,950
• Publication Number:
  US 20060136058A1
• Time in Patent Office: Days
• US Class Current: 623/13.140
• CPC Class Codes: A61F 2/30942 for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
• CPC Class Codes: A61F 2/38 for elbows or knees
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455
• CPC Class Codes: A61F 2002/30708 Means for distinguishing between left-sided and right-sided devices, Sets comprising both left-sided and right-sided prosthetic parts
• CPC Class Codes: A61F 2002/30943 using mathematical models
• CPC Class Codes: A61F 2002/30952 using CAD-CAM techniques or NC-techniques
• CPC Class Codes: A61F 2002/30957 using a positive or a negative model, e.g. moulds
• CPC Class Codes: A61F 2002/30962 using stereolithography
• CPC Class Codes: A61F 2002/4271 Carpal bones
• CPC Class Codes: A61F 2002/4289 Scaphoid or navicular bone
• CPC Class Codes: A61F 2002/4292 Lunate
• CPC Class Codes: A61F 2250/0084 Means for distinguishing between left-sided and right-sided devices; Sets comprising both left-sided and right-sided prosthetic parts
• CPC Class Codes: A61F 2310/00017 Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: G16H 50/50 for simulation or modelling of medical disorders

Abstract

The present invention relates to a system of preparing a one of a kind artificial or biological implant to repair or replace a bone or a tissue part in a living individual, the system comprising: pre-operatively constructing an anatomically correct, affected area 7-unique scan implants geometry, wherein the implants geometry is unknown before the acquisition of the individual'"'"'s data; and using a process derived from rapid prototyping to construct a geometrically and anatomically correct duplication of the functional attributes of the bone or tissue part to be replaced from the dataset created by scans of the recipients scans. This system can also be used to modify, pre-operatively, existing FDA approved implants.

Claims

1. A method of preparing a one of a kind artificial biological implant to repair or replace a tissue part in a living individual, the method comprising:

a) pre-operatively constructing an anatomically correct, affected area 7-unique scan implants geometry, wherein the implants geometry is unknown before the acquisition of the individual'"'"'s data; and

b) using a process derived from rapid prototyping to construct a geometrically and anatomically correct duplication of the tissue part to be replaced, while allowing for variance in its internal form and still providing the original tissue'"'"'s properties.

2. The method of claim 1, wherein the implant is constructed to restore natural, anatomically correct geometry of the tissue part in a recipient and to eliminate the need for pre-operative kinematic biological testing of an implant.

3. The method of claim 1, wherein the tissue is a joint.

4. The method of claim 1, wherein the implant comprises material of natural origin.

5. The method of claim 4, wherein the material of natural origin is a bone.

6. A custom-made implant prepared by the system of claim 1.

7. The custom-made implant of claim 6, the implant comprising a first part and a second part, the parts configured to be joined together by a snap-together, post-insertion fit.

8. The implant of claim 7, wherein the first part comprises a surface defining a plurality of fastener post apertures and the second part comprises a surface including a plurality of spaced fastener posts positioned to align with the fastener post apertures and to lockingly engage the first part with the second part.

9. The implant of claim 7, wherein the first part is lockingly engaged with the second part to form an engagement having sufficient resistance to tearing and to breaking so that the implant when assembled meets or exceeds the resistance of the replaced tissue part to tearing and to breaking, had the replaced tissue part been healthy.

10. The implant of claim 7, wherein the engagement has sufficient resistance to tearing and to breaking so that the implant will not come apart under a natural extension phase of a ligament.