Patient-specific mandible graft cage

Patent metadata

Field	Value
Publication number	US-10357367-B2
Application number	US-201715700904-A
Country	US
Kind code	B2
Filing date	Sep 11, 2017
Priority date	Sep 11, 2017
Publication date	Jul 23, 2019
Grant date	Jul 23, 2019

Abstract

A method for treating a mandible including forming an initial digital 3D model of a mesh graft containment device based on dimensions of a target space of a mandible to be filled via the graft containment device, the 3D model of the graft containment device defined via a buccal surface, a lingual surface, a superior surface and an inferior surface, individually adjusting one of the buccal surface and the lingual surface relative to a first midplane, which extends through a longitudinal axis of the graft containment device between the buccal and lingual surfaces, to add or remove bulk along a desired portion of the 3D model of the graft containment device to form an adjusted 3D model, and forming a final graft containment device for placement in the target space of the mandible based on the adjusted 3D model.

First claim

What is claimed is:

1. A method for treating a mandible, comprising:
forming an initial digital 3D model of a mesh graft containment device based on dimensions of a target space of a mandible to be filled via the graft containment device, the 3D model of the graft containment device defined via a buccal surface, a lingual surface, a superior surface and an inferior surface;
individually adjusting one of the buccal surface and the lingual surface relative to a first midplane, which extends through a longitudinal axis of the graft containment device between the buccal and lingual surfaces, to add or remove bulk along a desired portion of the 3D model of the graft containment device to form an adjusted 3D model; and
forming a final graft containment device for placement in the target space of the mandible based on the adjusted 3D model.

2. The method of claim 1 , further comprising individually adjusting one of the superior surface and the inferior surface relative to a second midplane, which extends through the longitudinal axis between the superior and inferior surfaces, to form the adjusted 3D model.

3. The method of claim 2 , wherein adjusting one of the superior surface and the inferior surface includes adjusting one of a distance, a position and orientation of the one of the superior surface and the inferior surface relative to the second midplane.

4. The method of claim 1 , wherein the dimensions of the target space of the mandible is obtained from an image scan of a patient.

5. The method of claim 1 , wherein the adjusted 3D model is based on a desired treatment plan for a patient.

6. The method of claim 5 , wherein the desired treatment plan includes planned future dental implants and the adjusted the 3D model includes added bulk along the lingual surface of the graft containment device.

7. The method of claim 1 , further comprising adjusting a pore size of a portion of a body of the 3D model of the graft containment device to form the adjusted 3D model, pores along the portion of the body sized to receive bone fixation elements therethrough.

8. The method of claim 7 , wherein the pore size is adjusted by adjusting a distance between one of adjacent circumferential members and adjacent longitudinal members, which define the mesh graft containment device.

9. The method of claim 1 , wherein the initial 3D model includes a fixation tab extending from one of a first and second end of a longitudinally extending body of the graft containment device, the fixation tab including an opening extending therethrough to accommodate a bone fixation element for fixing the graft containment device to a portion of bone.

10. The method of claim 9 , wherein the fixation tab extends from the buccal surface of the graft containment device.

11. The method of claim 9 , further comprising adjusting the initial 3D model to include an additional fixation tab extending from the inferior surface of the graft containment device, the additional fixation tab including an opening extending therethrough to accommodate a bone fixation element for fixing the graft containment device to portion of bone.

12. The method of claim 1 , wherein forming the final graft containment device includes three dimensionally printing the final graft containment device according to the adjusted 3D model.

13. The method of claim 1 , wherein adjusting one of the buccal surface and the lingual surface includes adjusting one of a distance, a position and an orientation of the one of the buccal surface and the lingual surface relative to the first midplane.

14. The method of claim 1 , further comprising adjusting a trajectory of the 3D model of the graft containment device.

Assignees

• Depuy Synthes Products Inc

Inventors

• DANIEL Steffan
• Furrer André

Classifications

• A61F2002/2835

  Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material · CPC title

• A61F2/2875

  Skull or cranium (A61F2/2803 takes precedence; joints for temporo-mandibular [TM] joints [TMJ] A61F2/3099) · CPC title

• A61F2002/30576

  with extending fixation tabs · CPC title

• A61F2002/30943

  using mathematical models · CPC title

• A61F2002/3096

  trimmed or cut to a customised size · CPC title