Perspective frame matching process for deformed fixation rings

Patent metadata

Field	Value
Publication number	US-11877802-B2
Application number	US-202017138461-A
Country	US
Kind code	B2
Filing date	Dec 30, 2020
Priority date	Dec 30, 2020
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

A computer-implemented method for producing a treatment plan to control manipulation of a fixation apparatus including a first element and a second ring and struts to correct an anatomical structure deformity of first and second anatomical structure segments, including: receiving, using one or more graphical user interfaces of a computing system, configuration information associated with the fixation apparatus, the configuration information comprising one or more geometric characteristics of one or more elements of the fixation apparatus and ring deformation information; receiving, by the computing system, images of the fixation apparatus and the first and the second anatomical structure segments attached thereto; determining, by the computing system, based on the configuration information and the received images, positions and orientations of the first and the second anatomical structure segments in three-dimensional space relative to the fixation apparatus; determining the hole locations of the first element based upon the deformation information; determining, by the computing system, manipulations to the fixation apparatus for correction of the anatomical structure deformity, the manipulations comprising adjustments to the struts based upon the determined hole location of the first element; and providing, by the computing system, to one or more users, indications of the manipulations to the fixation apparatus.

First claim

What is claimed is:

1. A computer-implemented method for producing a treatment plan to control manipulation of a fixation apparatus including a first element and a second element and struts to correct an anatomical structure deformity of an anatomical structure having first and second anatomical structure segments, comprising:
receiving configuration information associated with the fixation apparatus, the configuration information comprising one or more geometric characteristics of one or more elements of the fixation apparatus and element deformation information;
receiving, by a computing system, images of the fixation apparatus and the first and the second anatomical structure segments attached thereto;
determining, by the computing system, based on the configuration information and the received images, positions and orientations of the first and the second anatomical structure segments in three-dimensional space relative to the fixation apparatus;
determining hole locations of the first element based upon the deformation information;
determining, by the computing system, manipulations to the fixation apparatus for correction of the anatomical structure deformity, the manipulations comprising adjustments to the struts based upon the determined hole location of the first element; and
providing, by the computing system, to one or more users, indications of the manipulations to the fixation apparatus.

2. The computer-implemented method of claim 1 , wherein
the deformation information includes a number of wires used and a tension on the wires, and
determining the hole locations of the first element based upon the deformation information includes using a lookup table to determine hole locations of the first element based upon the number of wires and the tension.

3. The computer-implemented method of claim 2 , wherein the deformation information includes a tension value for each of the number of wires.

4. The computer-implemented method of claim 3 , wherein the deformation information includes attachment hole location information for each of the number of wires and wire fixation devices.

5. The computer-implemented method of claim 2 , wherein determining the hole locations of the first element based upon the deformation information includes using lookup table tension values and using interpolation to determine the hole locations.

6. The computer-implemented method of claim 2 , wherein the lookup table is generated using finite element analysis of the first element.

7. The computer-implemented method of claim 1 , wherein
the deformation information includes a measurement of an element opening in the first element, and
determining the hole locations of the first element based upon the deformation information includes using a lookup table to determine hole locations of the first element based upon the element opening measurement.

8. The computer-implemented method of claim 7 , wherein the lookup table is generated using finite element analysis of the first element.

9. The computer-implemented method of claim 7 , wherein determining the hole locations of the first element based upon the deformation information includes using lookup table element opening values and using interpolation to determine the hole locations.

10. The computer-implemented method of claim 7 , wherein the element opening measurement is determined using a physical measurement.

11. The computer-implemented method of claim 10 , wherein the physical measurement is determined using a dedicated measurement tool.

12. The computer-implemented method of claim 7 , wherein the element opening measurement is determined using a digital measurement.

13. The computer-implemented method of claim 12 , further comprising detecting markers in the received images of the fixation apparatus and producing the digital measurement of the element opening based upon the detected markers.

14. The computer-implemented method of claim 1 , wherein
the deformation information includes a measurement of an element opening in the first element, and
determining the hole locations of the first element based upon the deformation information includes using a hole location equation to determine hole locations of the first element based upon the element opening measurement.

15. The computer-implemented method of claim 14 , wherein the hole location equation is generated using finite element analysis of the first element.

16. The computer-implemented method of claim 1 , wherein
the deformation information includes a measurement of strain from a first strain gauge in the first element, and
determining the hole locations of the first element based upon the deformation information includes using a lookup table to determine hole locations of the first element based upon the strain measurement.

17. The computer-implemented method of claim 16 , wherein the lookup table is generated using finite element analysis of the first element.

18. The computer-implemented method of claim 17 , wherein determining the hole locations of the first element based upon the deformation information includes using lookup table strain values and using interpolation to determine the hole locations.

19. The computer-implemented method of claim 16 , wherein
the deformation information includes a measurement of strain from the first strain gauge in the first element, and
determining the hole locations of the first element based upon the deformation information includes using a hole location equation to determine hole locations of the first element based upon the strain measurement.

20. The computer-implemented method of claim 19 , wherein the hole location equation is generated using finite element analysis of the first element.

21. The computer-implemented method of claim 16 , wherein
the deformation information includes a measurement of a first strain from the first strain gauge and a second strain from a second strain gauge in the first element, and
determining the hole locations of the first element based upon the deformation information based upon the first strain measurement and the second strain measurement.

22. The computer-implemented method of claim 1 , wherein the configuration information is received from one or more graphical user interfaces.

Assignees

• Depuy Synthes Products Inc

Inventors

• Lavoritano Scott
• Wahl Michael
• Gutmann Bernd
• Charlton Iii Vaughn
• Montello Albert

Classifications

• A61B34/10 Primary

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

• A61B17/62 Primary

  Ring frames, i.e. devices extending around the bones to be positioned ({A61B17/6433} , A61B17/66 take precedence) · CPC title

• A61B34/25

  User interfaces for surgical systems · CPC title

• A61B2017/564

  Methods for bone or joint treatment · CPC title

• A61B17/66

  {Alignment}, compression or distraction mechanisms · CPC title