Granted Patent B2

US 7,796,791 · App. 10/704,325 · Granted Sep 14, 2010

Abstract

Claims (62)

1. A method for designing an anatomically correct interpositional arthroplasty system for a joint comprising the following steps:

fusing at least two imaging planes for the joint;

segmenting data of one or more meniscal surfaces of the joint; and

converting the segmented data into an implant surface of the interpositional arthroplasty system;

wherein the method further includes at least one of the following steps,

combining at least one of cartilage surface data and meniscal surface data to serve as a model for the implant surface;

compressing at least one section of a meniscal surface by a factor ranging from 0.2 to 0.99;

converting a point cloud data for a superior implant surface and an inferior implant surface into parametric surface data; and

cutting a parametric surface data set to determine a shape of the implant.

2. The method of claim 1 , wherein the implant surface is a computer-readable model surface.

3. A method for designing an anatomically correct arthroplasty system for a joint comprising the following steps:

fusing at least two imaging planes for the joint;

segmenting data of one or more cartilage surfaces of the joint; and

converting the segmented data into an implant surface of the arthroplasty system,

wherein the method further includes at least one of the following steps:

combining at least one of cartilage surface data and meniscal surface data to serve as a model for the implant surface;

compressing at least one section of a meniscal surface by a factor ranging from 0.2 to 0.99;

converting a point cloud data for a superior implant surface and an inferior implant surface into parametric surface data; and

cutting a parametric surface data set to determine a shape of the implant.

4. The method of claim 3 , wherein the implant surface is a computer-readable model surface.

5. A method for designing an anatomically correct articular repair system for a joint comprising the following steps:

fusing at least two imaging planes for the joint;

segmenting data of at least one articular surface of the joint; and

converting the segmented data into an implant surface of the articular repair system,

wherein the method further includes at least one of the following steps:

combining the articular surface data with meniscal surface data to serve as a model for the implant surface;

compressing at least one section of a meniscal surface by a factor ranging from 0.2 to 0.99;

converting a point cloud data for a superior implant surface and an inferior implant surface into parametric surface data; and

cutting a parametric surface data set to determine a shape of the implant.

6. The method of claim 5 , wherein the implant surface is a computer-readable model surface.

7. The method of claim 5 , wherein the articular surface is a bone surface.

8. A method for designing an anatomically correct interpositional arthroplasty system for a joint comprising the following steps:

acquiring one of an isotropic data set and near isotropic data set for the joint;

segmenting data of at least one meniscal surface of the joint; and

converting the segmented data into an implant surface of the interpositional arthroplasty system,

wherein the method further includes at least one of the following steps:

combining at least one of cartilage surface data and meniscal surface data to serve as a model for the implant surface;

compressing at least one section of a meniscal surface by a factor ranging from 0.2 to 0.99;

converting a point cloud data for a superior implant surface and an inferior implant surface into parametric surface data; and

cutting a parametric surface data set to determine a shape of the implant.

9. The method of claim 8 , wherein the implant surface is a computer-readable model surface.

10. A method for designing an anatomically correct arthroplasty system for a joint comprising the following steps:

acquiring at least one of an isotropic data set and a near isotropic data set for the joint;

segmenting data of at least one cartilage surface of the joint; and

converting the segmented data into an implant surface of the arthroplasty system,

wherein the method further includes at least one of the following steps:

combining at least one of cartilage surface data and meniscal surface data to serve as a model for the implant surface;

compressing at least one section of a meniscal surface by a factor ranging from 0.2 to 0.99;

converting a point cloud data for a superior implant surface and an inferior implant surface into parametric surface data; and

cutting a parametric surface data set to determine a shape of the implant.

11. The method of claim 10 , wherein the implant surface is a computer-readable model surface.

12. A method for designing an anatomically correct articular repair system for a joint comprising the following steps:

acquiring at least one of an isotropic data set or near isotropic data set for the joint;

segmenting data of at least one articular surface of the joint; and

converting the segmented data into an implant surface of the articular repair system,

wherein the method further includes at least one of the following steps:

combining the articular surface data with meniscal surface data to serve as a model for the implant surface;

compressing at least one section of a meniscal surface by a factor ranging from 0.2 to 0.99;

converting a point cloud data for a superior implant surface and an inferior implant surface into parametric surface data; and

cutting a parametric surface data set to determine a shape of the implant.

13. The method of claim 12 , wherein the implant surface is a computer-readable model surface.

14. The method of claim 12 , wherein the articular surface is a bone surface.

Assignments (21)