# US 2014/0207243 A1 · Implants for Altering Wear Patterns of Articular Surfaces

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- Number: US 2014/0207243 A1
- Document ID: US20140207243A1
- Status: Published application
- Kind: A1
- Application number: 14/222,836
- Filed: 2014-03-24
- Published: 2014-07-24
- Earliest claimed: 2008-03-05
- Assignees: ConforMIS, Inc.
- Applicants: ConforMIS, Inc.
- Inventors: Wolfgang Fitz; Raymond Bojarski; Philipp Lang
- Web page: https://patentgrep.com/patent/US20140207243A1

## CPC

- A61F 2/3872: {Meniscus for implantation between the natural bone surfaces}
- A61B 34/10: Computer-aided planning, simulation or modelling of surgical operations
- A61F 2/30756: {Cartilage endoprostheses (A61F2/3603 takes precedence)}
- A61F 2/30942: {for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques}
- A61F 2/3603: {implanted without ablation of the whole natural femoral head (endoprosthetic cartilage A61F2/30756)}
- A61F 2/38: for elbows or knees
- A61F 2/3859: {Femoral components}
- A61F 2/3877: {Patellae or trochleae}
- A61F 2/389: {Tibial components (A61F2/3868 takes precedence)}
- A61F 2/4081: {Glenoid components, e.g. cups}
- B33Y 70/00: Materials specially adapted for additive manufacturing
- A61B 2034/108: {Computer aided selection or customisation of medical implants or cutting guides}
- A61F 2/488: {Means for detecting or monitoring wear}
- A61F 2002/30062: {(bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive}
- A61F 2002/30065: {thermoplastic, i.e. softening or fusing when heated, and hardening and becoming rigid again when cooled}
- A61F 2002/30324: {differing in thickness}
- A61F 2002/30757: {made of a sheet covering the natural articular surface, e.g. cap}
- A61F 2002/30761: {Support means for artificial cartilage, e.g. cartilage defect covering membranes}
- A61F 2002/30878: {with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts}
- A61F 2002/30879: {Ribs}
- A61F 2002/30884: {Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity}
- A61F 2002/30891: {Plurality of protrusions}
- A61F 2002/30894: {inclined obliquely with respect to each other}
- A61F 2002/3093: {for promoting ingrowth of bone tissue}
- A61F 2002/30934: {Special articulating surfaces}
- A61F 2002/30939: {Means for modifying the geometry of articulating surfaces, e.g. for compensating excessive clearance caused by wear}
- A61F 2002/30943: {using mathematical models}
- A61F 2002/30948: {using computerized tomography, i.e. CT scans}
- A61F 2002/30952: {using CAD-CAM techniques or NC-techniques}
- A61F 2002/30953: {using a remote computer network, e.g. Internet}
- A61F 2002/30957: {using a positive or a negative model, e.g. moulds}
- A61F 2002/3096: {trimmed or cut to a customised size}
- A61F 2002/3895: {unicompartimental}
- A61F 2002/4633: {for selection of endoprosthetic joints or for pre-operative planning}
- A61F 2210/0004: bioabsorbable
- A61F 2210/0071: thermoplastic
- A61F 2310/00011: Metals or alloys
- A61F 2310/00017: Iron- or Fe-based alloys, e.g. stainless steel
- A61F 2310/00023: Titanium or titanium-based alloys, e.g. Ti-Ni alloys
- A61F 2310/00047: Aluminium or Al-based alloys
- A61F 2310/00065: Manganese or Mn-based alloys
- A61F 2310/00071: Nickel or Ni-based alloys
- A61F 2310/00077: Copper or Cu-based alloys
- A61F 2310/00083: Zinc or Zn-based alloys
- A61F 2310/00107: Palladium or Pd-based alloys
- A61F 2310/00113: Silver or Ag-based alloys
- A61F 2310/00119: Tin or Sn-based alloys
- A61F 2310/00131: Tantalum or Ta-based alloys
- A61F 2310/00149: Platinum or Pt-based alloys
- A61F 2310/00155: Gold or Au-based alloys
- A61F 2310/00179: Ceramics or ceramic-like structures
- A61F 2310/00365: Proteins; Polypeptides; Degradation products thereof
- B33Y 70/10: Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
- B33Y 80/00: Products made by additive manufacturing
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

## Abstract

Methods and devices for correcting wear pattern defects in joints. The methods and devices described herein allow for the restoration of correcting abnormal biomechanical loading conditions in a joint brought on by wear pattern defects, and also can, in embodiments, permit correction of proper kinematic movement.

## Claims

### Claim 1

An implant for correcting an articular surface wear pattern, comprising an implant body having a characteristic topography, an interior surface, and an outer surface, where the implant body topography is derived from a wear pattern analysis of the articular surface.

### Claim 2 (depends on 2)

The implant of claim 2, wherein the interior surface is a mirror image of the articular surface.

### Claim 3

An implant for improving an articular surface wear pattern, comprising an implant body having a characteristic topography, an interior surface, and an outer surface, where the implant body topography is derived from a wear pattern analysis of the articular surface.

### Claim 4 (depends on 3)

The implant of claim 3, wherein the interior surface is a mirror image of the articular surface.