System and method for image segmentation in generating computer models of a joint to undergo arthroplasty
First Claim
1. A method of manufacturing a custom arthroplasty guide, the guide including a mating region configured to matingly receive a portion of a patient bone associated with an arthroplasty procedure for which the custom arthroplasty guide is to be employed, the mating region including a surface contour that is generally a negative of a surface contour of the portion of the patient bone, the surface contour of the mating region being configured to mate with the surface contour of the portion of the patient bone in a generally matching or interdigitating manner when the portion of the patient bone is matingly received by the mating region, the method of manufacture comprising:
- a) using a medical imaging system to obtain first data, wherein the first data is associated with the portion of the patient bone;
b) providing second data, wherein the second data is associated with a bone other than the patient bone;
c) employing a computer to use the first data to modify the second data into third data;
d) employing the computer to use the third data to generate a three dimensional computer model of the portion of the patient bone;
e) employing the computer to use the three dimensional computer model to generate design data associated with the custom arthroplasty guide; and
f) using the design data in manufacturing the custom arthroplasty guide.
2 Assignments
0 Petitions
Accused Products
Abstract
A custom arthroplasty guide and a method of manufacturing such a guide are disclosed herein. The method of manufacturing the custom arthroplasty guide includes: a) generating medical imaging slices of the portion of the patient bone; b) identifying landmarks on bone boundaries in the medical imaging slices; c) providing model data including image data associated with a bone other than the patient bone; d) adjusting the model data to match the landmarks; e) using the adjusted model data to generate a three dimensional computer model of the portion of the patient bone; f) using the three dimensional computer model to generate design data associated with the custom arthroplasty guide; and g) using the design data in manufacturing the custom arthroplasty guide.
693 Citations
16 Claims
-
1. A method of manufacturing a custom arthroplasty guide, the guide including a mating region configured to matingly receive a portion of a patient bone associated with an arthroplasty procedure for which the custom arthroplasty guide is to be employed, the mating region including a surface contour that is generally a negative of a surface contour of the portion of the patient bone, the surface contour of the mating region being configured to mate with the surface contour of the portion of the patient bone in a generally matching or interdigitating manner when the portion of the patient bone is matingly received by the mating region, the method of manufacture comprising:
-
a) using a medical imaging system to obtain first data, wherein the first data is associated with the portion of the patient bone; b) providing second data, wherein the second data is associated with a bone other than the patient bone; c) employing a computer to use the first data to modify the second data into third data; d) employing the computer to use the third data to generate a three dimensional computer model of the portion of the patient bone; e) employing the computer to use the three dimensional computer model to generate design data associated with the custom arthroplasty guide; and f) using the design data in manufacturing the custom arthroplasty guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of manufacturing a custom arthroplasty guide, the guide including a mating region configured to matingly receive a portion of a patient bone associated with an arthroplasty procedure for which the custom arthroplasty guide is to be employed, the mating region including a surface contour that is generally a negative of a surface contour of the portion of the patient bone, the surface contour of the mating region being configured to mate with the surface contour of the portion of the patient bone in a generally matching or interdigitating manner when the portion of the patient bone is matingly received by the mating region, the method of manufacture comprising:
-
a) identifying landmarks in medical imaging data associated with the portion of the patient bone; b) providing a golden mesh that is geometrically representative of an exemplary bone that is not the patient bone but is the same bone type as the patient bone and is further representative of what is considered to be generally normal with respect to a characteristic of the bone type for at least one of size, condition, shape, weight, age, height, race, gender or diagnosed disease condition; c) deforming the golden mesh to match the landmarks; d) employing a computer to generate segmentation curves from the deformed golden mesh; e) approximating the segmentation curves with spline curves; f) modifying the spline curves to match the landmarks; g) employing the computer to use the modified spline curves to generate design data; and h) using the design data in manufacturing the custom arthroplasty guide. - View Dependent Claims (12, 13, 14, 15, 16)
-
Specification