PRODUCING A THREE-DIMENSIONAL MODEL OF AN IMPLANT

• US 20160203241A1
• Filed: 03/21/2016
• Published: 07/14/2016
• Est. Priority Date: 08/11/1999
• Status: Active Grant

• Current Assignee: Osteoplastics, LLC
• Original Assignee: Osteoplastics, LLC
• Inventors: Dean, Howard David, Subramanyan, Krishnamoorthy, Moullas, Alexandros T., Ratcheson, Robert A.
• Granted Patent: US 9,672,302 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2034/108 Computer aided selection or customisation of medical implants or cutting guides
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 5/103 Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes A61B5/08 takes precedence; measuring aids for tailors A41H1/00; measuring instruments specially adapted for dentistry A61C19/04
• CPC Class Codes: A61B 5/1075 for measuring dimensions by non-invasive methods, e.g. for determining thickness of tissue layer A61B8/0858 takes precedence
• CPC Class Codes: A61F 2/2875 Skull or cranium A61F2/2803 and A61F2/3099 take precedence
• 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: B33Y 50/00 Data acquisition or data processing for additive manufacturing
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: G05B 19/4099 Surface or curve machining, making 3D objects, e.g. desktop manufacturing
• CPC Class Codes: G05B 2219/49023 3-D printing, layer of powder, add drops of binder in layer, new powder
• CPC Class Codes: G06F 30/00 Computer-aided design [CAD]
• CPC Class Codes: G06T 15/00 3D [Three Dimensional] image rendering
• CPC Class Codes: G06T 19/00 Manipulating 3D models or images for computer graphics
• CPC Class Codes: G06T 2210/41 Medical
• CPC Class Codes: Y10S 128/923 by comparison of patient data to other data
• CPC Class Codes: Y10S 623/911 Bone

Abstract

Determining a shape of a medical device to be implanted into a subject produces an image including a defective portion and a non-defective portion of a surface of a tissue of interest included in the subject. The tissue of interest is segmented within the image. A template, representing a normative shape of an external anatomical surface of the tissue of interest, is superimposed to span the defective portion. An external shape of an implant, is determined as a function of respective shapes of the defective portion as seen in the template, for repairing the defective portion.

Claims

1. A computer implemented method of obtaining data for determining a three-dimensional shape of a medical device, the method comprising:

rendering a computer-generated three-dimensional representation of a target tissue from computer readable image data of the target tissue wherein the target tissue comprises two portions, a portion with a defect and a portion without a defect;

identifying anatomical landmarks on the computer-generated three-dimensional representation of the target tissue;

superimposing onto the rendered computer-generated three-dimensional representation of the target tissue a three-dimensional template to span the defective portion;

deforming the three-dimensional template to match the identified anatomical landmarks to determine the three-dimensional shape of the medical device.

2. The method as set forth in claim 1, wherein the three-dimensional image data is obtained from image slices of the target tissue.

3. The method as set forth in claim 1, wherein the three-dimensional image data is obtained as one or more voxels of the target tissue.

4. The method of claim 1, wherein the medical device is an implant to be implanted in a subject.

5. The method of claim 1, further comprising generating the computer-readable image data of the target tissue.

6. The method of claim 5, further comprising fabricating the 3-dimensional shape of the medical device.

7. The method of claim 1, further comprising fabricating the 3-dimensional shape of the medical device.

8. The method of claim 1, wherein deforming the three-dimensional template to match the identified anatomical landmarks to determine the three-dimensional shape of the medical device comprises determining the three-dimensional shape of the medical device based on the deformed template that spans the defective portion.

9. The method of claim 1, wherein the anatomical landmarks are present on an external surface of the non-defective portion.