Method for designing and manufacturing a bone implant

Patent metadata

Field	Value
Publication number	US-10534869-B2
Application number	US-201816220383-A
Country	US
Kind code	B2
Filing date	Dec 14, 2018
Priority date	Jan 4, 2013
Publication date	Jan 14, 2020
Grant date	Jan 14, 2020

Abstract

An anatomical implant application, such as a bone implant application for instance, can receive an anatomical image that is representative of an anatomical structure. The anatomical implant application can generate an implant image that is associated with the anatomical structure. The generated implant image can define an inner surface that faces the anatomical image. A plurality of distances can be determined from respective locations of the inner surface of the implant image to the anatomical image in respective straight lines. The distances may represent a superimposition of the implant image over the anatomical image. The distances may be compared to a tolerance. The inner surface may be repositioned so as to change at least the select one of the distances. An implant, such as a bone implant for instance, may be fabricated in accordance with data that is associated with the implant image.

First claim

What is claimed:

1. A method comprising the steps of:
receiving an anatomical image representative of an anatomical structure;
generating an implant image associated with the anatomical structure, the implant image defining an inner surface that faces the anatomical image, and a plurality of slice locations spaced apart along a length of the implant image, each slice location defining a respective slice of the implant image that is fitted to the anatomical image;
determining a plurality of distances measured from respective locations of the inner surface to the anatomical image, the distances representative of a superimposition of the implant image over the anatomical image, wherein the respective locations comprise locations between the slices that are fitted to the anatomical image;
comparing the distances to a tolerance;
when at least a select one of the plurality of distances is not within the tolerance, repositioning the inner surface so as to change the at least select one of the plurality of distances, wherein repositioning comprises adding a new slice location to define a new slice of the implant image that is fitted to the anatomical image; and
converting the implant image having the new slice location into manufacturing instructions for fabricating an implant.

2. The method as recited in claim 1 , further comprising the step of updating the implant image by repositioning the inner surface in accordance with the changed one of the plurality of distances.

3. The method as recited in claim 1 , wherein the repositioning step further comprises the step of moving at least a portion of the inner surface away from the anatomical image so as to increase the at least select one of the plurality of distances.

4. The method as recited in claim 1 , wherein the repositioning step further comprises the step of moving at least a portion of inner surface toward the anatomical image so as to decrease the at least select one of the plurality of distances.

5. The method as recited in claim 1 , wherein the repositioning step further comprises the step of rotating the inner surface about an axis.

6. The method as recited in claim 1 , the method further comprising a step of receiving a user-selected offset number, wherein a number of slice locations is based on the user-selected offset number.

7. The method as recited in claim 1 , the method further comprising the steps of:
identifying a plurality of cutting instruments; and
determining whether each of the plurality of cutting instruments are capable of producing an implant in accordance with the implant image.

8. The method as recited in claim 7 , the method further comprising the steps of:
identifying one or more regions of the implant image;
determining whether each of the plurality of cutting instruments are capable of producing each of the regions in accordance with the implant image; and
selecting, for each region, a preferred cutting instrument that is capable of producing the region.

9. The method as recited in claim 1 , the method further comprising the step of generating a graphical indication of the comparison of the distances to the tolerance.

10. The method as recited in claim 9 , wherein the tolerance defines a low threshold and a high threshold, the graphical indication comprising 1) a first indication when a distance is greater than the high threshold, and 2) a second indication different than the first indication when a distance is less than the low threshold.

11. The method as recited in claim 1 , the method further comprising the step of fabricating the implant in accordance with the manufacturing instructions converted from the implant image having the new slice location.

12. The method as recited in claim 1 , the method further comprising:
sweeping between slices that are adjacent to each other so as to measure the plurality of distances from respective locations of the inner surface to the anatomical image.

13. The method as recited in claim 1 , the method further comprising:
sweeping between the new slice and at least one slice that is adjacent to the new slice so as to measure distances from respective locations that are between the new slice and the at least one slice that is adjacent to the new slice.

14. One or more non-transitory computer-readable storage media having collectively stored thereon instructions that, upon execution by one or more processors of a computer system, cause the computer system to at least:
receive an anatomical image representative of an anatomical structure;
generate an implant image associated with the anatomical structure, the implant image defining an inner surface that faces the anatomical image, and a plurality of slice locations spaced apart along a length of the implant image, each slice location defining a respective slice of the implant image that is fitted to the anatomical image;
determine a plurality of distances measured from respective locations of the inner surface to the anatomical image in respective straight lines, the distances representative of a superimposition of the implant image over the anatomical image, wherein the respective locations comprise locations between the slices that are fitted to the anatomical image;
compare the distances to a tolerance;
when at least a select one of the plurality of distances is not within the tolerance, reposition the inner surface so as to change the at least select one of the plurality of distances, wherein the reposition comprises adding a new slice location to define a new slice of the implant image that is fitted to the anatomical image; and
convert the implant image having the new slice location into manufacturing instructions for fabricating an implant.

15. The non-transitory computer-readable storage media of claim 14 , wherein the instructions to reposition the inner surface further comprise instructions that, upon execution by the one or more processors of the computer system, cause the computer system to at least move at least a portion of the inner surface away from the anatomical image so as to increase the at least select one of the plurality of distances.

16. The non-transitory computer-readable storage media of claim 14 , wherein the instructions to reposition the inner surface further comprise instructions that, upon execution by the one or more processors of the computer system, cause the computer system to at least move at least a portion of inner surface toward the anatomical image so as to decrease the at least select one of the plurality of distances.

17. The non-transitory computer-readable storage media of claim 14 , having further stored thereon instructions that, upon execution by the one or more processors of the computer system, cause the computer system to at least:
identify a plurality of cutting instruments;
identify one or more regions of the implant image;
determine whether each of the plurality of cutting instruments are capable of producing each of the regions in accordance with the implant image; and
select, for each region, a preferred cutting instrument that is capable of producing the region.

18. A computer system comprising:
a processor;
a display coupled to the processor, the display configured to display visual information comprising an anatomical image and an implant image; and
a memory in communication with the processor, the memory having stored therein instructions that, upon execution by the processor, cause the computer system to perform operations comprising:
receiving the anatomical image representative of an anatomical structure;

Assignees

• Depuy Synthes Products Inc
• Hoeller Wolfgang

Inventors

• Benker Emanuel
• Furrer Andre
• Hoeller Wolfgang

Classifications

• A61B17/8071 Primary

  for the jaw · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61B2034/108

  Computer aided selection or customisation of medical implants or cutting guides · CPC title

• A61B34/10 Primary

  Computer-aided planning, simulation or modelling of surgical operations · CPC title

• G06F17/50 Primary

  Physics · mapped topic