Computer-assisted planning and execution system

Patent metadata

Field	Value
Publication number	US-10448956-B2
Application number	US-201415100215-A
Country	US
Kind code	B2
Filing date	Nov 26, 2014
Priority date	Nov 29, 2013
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

A method for computer-assisted planning of a transplant surgery is provided. The method includes obtaining a computer-readable representation of a donor and recipient skeletal fragment; determining surgical cutting planes on the computer-readable representation of the donor skeletal fragment from which a portion of the donor skeletal fragment from the computer-readable representation of the donor skeletal fragment will be harvested; determining virtual cutting guides; performing a virtual osteotomy to separate the portion of the donor skeletal fragment from the computer-readable representation of the donor skeletal fragment from a remainder portion of the donor skeletal fragment based on a position of the virtual cutting guides that are attached to the computer-readable representation of the donor skeletal fragment; positioning the donor skeletal fragment within a transplant region of the recipient skeletal fragment; and creating a hybrid computer-readable representation comprising the recipient skeletal fragment and the portion of the donor skeletal.

First claim

What is claimed is:

1. A computer-implemented method for computer-assisted planning of a transplant surgery, the method comprising:
creating a computer-readable representation of a donor skeletal fragment based on one or more medical imaging techniques, wherein the computer-readable representation of the donor skeletal fragment comprises one or more of: a vascular model or a neural model of the donor skeletal fragment;
creating a computer-readable representation of a recipient skeletal fragment based on one or more medical imaging techniques, wherein the computer-readable representation of the recipient skeletal fragment comprises one or more of: a vascular model or a neural model of the recipient skeletal fragment,
wherein the computer-readable representation of the recipient skeletal fragment and the donor skeletal fragment comprises a segmented 3D reconstruction model that is created using the one or more medical imaging techniques and a segmentation algorithm, and
wherein each voxel of the segmented 3D reconstruction model of the recipient skeletal fragment and the donor skeletal fragment comprises an associated anatomical attribute that classifies an anatomy for which each voxel represents;

determining one or more surgical cutting planes on the computer-readable representation of the donor skeletal fragment from which a portion of the donor skeletal fragment will be harvested from the computer-readable representation of the donor skeletal fragment;
determining one or more virtual cutting guides based on the one or more surgical cutting planes to be attached to the computer-readable representation of the donor skeletal fragment;
performing a virtual osteotomy to separate the portion of the donor skeletal fragment from the computer-readable representation of the donor skeletal fragment from a remainder portion of the donor skeletal fragment based on a position of the one or more virtual cutting guides that are attached to the computer-readable representation of the donor skeletal fragment;
positioning the donor skeletal fragment within a transplant region of the recipient skeletal fragment;
creating a hybrid computer-readable representation comprising the recipient skeletal fragment and the portion of the donor skeletal fragment during or after the positioning; and
providing the hybrid computer-readable representation as an output.

2. A computer-implemented method for computer-assisted planning of a transplant surgery, the method comprising:
obtaining a computer-readable representation of a donor skeletal fragment;
obtaining a computer-readable representation of a recipient skeletal fragment;
determining one or more surgical cutting planes on the computer-readable representation of the donor skeletal fragment from which a portion of the donor skeletal fragment will be harvested from the computer-readable representation of the donor skeletal fragment;
determining one or more virtual cutting guides based on the one or more surgical cutting planes to be attached to the computer-readable representation of the donor skeletal fragment;
performing a virtual osteotomy to separate the portion of the donor skeletal fragment from the computer-readable representation of the donor skeletal fragment from a remainder portion of the donor skeletal fragment based on a position of the one or more virtual cutting guides that are attached to the computer-readable representation of the donor skeletal fragment;
positioning the donor skeletal fragment within a transplant region of the recipient skeletal fragment;
creating a hybrid computer-readable representation comprising the recipient skeletal fragment and the portion of the donor skeletal fragment during or after the positioning;
tracking movement of the donor skeletal fragment of the computer-readable representation during the positioning;
updating the hybrid computer-readable representation based on the movement being tracked; and
providing the hybrid computer-readable representation as an output.

3. A computer-implemented method for computer-assisted planning of a transplant surgery, the method comprising:
obtaining a computer-readable representation of a donor skeletal fragment;
obtaining a computer-readable representation of a recipient skeletal fragment;
determining one or more surgical cutting planes on the computer-readable representation of the donor skeletal fragment from which a portion of the donor skeletal fragment will be harvested from the computer-readable representation of the donor skeletal fragment;
determining one or more virtual cutting guides based on the one or more surgical cutting planes to be attached to the computer-readable representation of the donor skeletal fragment;
performing a virtual osteotomy to separate the portion of the donor skeletal fragment from the computer-readable representation of the donor skeletal fragment from a remainder portion of the donor skeletal fragment based on a position of the one or more virtual cutting guides that are attached to the computer-readable representation of the donor skeletal fragment;
positioning the donor skeletal fragment within a transplant region of the recipient skeletal fragment;
creating a hybrid computer-readable representation comprising the recipient skeletal fragment and the portion of the donor skeletal fragment during or after the positioning; and
providing the hybrid computer-readable representation as an output;
identifying a set of cephalometric landmarks associated with the hybrid computer-readable representation;
calculating a set of cephalometric metrics for the set of cephalometric landmarks that are identified;
determining an acceptable result of the surgery being planned based at least in part on the set of cephalometric metrics that are calculated; and
updating at least one of the one or more surgical cutting planes or cutting guides based on the determination of acceptable result.

4. The computer-implemented method of claim 3 , wherein the set of cephalometric landmarks comprise one or more of: Gonion (“Go”), Nasion (“N”), A point (“A”), B point (“B”), Sella (“S”), Menton (“M”), left/right Zygoma (“ZY”), Os occipital (“OCC”).

5. A computer-implemented method for computer-assisted planning of a transplant surgery, the method comprising:
obtaining a computer-readable representation of a donor skeletal fragment;
obtaining a computer-readable representation of a recipient skeletal fragment;
determining one or more surgical cutting planes on the computer-readable representation of the donor skeletal fragment from which a portion of the donor skeletal fragment will be harvested from the computer-readable representation of the donor skeletal fragment;
determining one or more virtual cutting guides based on the one or more surgical cutting planes to be attached to the computer-readable representation of the donor skeletal fragment;
performing a virtual osteotomy to separate the portion of the donor skeletal fragment from the computer-readable representation of the donor skeletal fragment from a remainder portion of the donor skeletal fragment based on a position of the one or more virtual cutting guides that are attached to the computer-readable representation of the donor skeletal fragment;
positioning the donor skeletal fragment within a transplant region of the recipient skeletal fragment;
creating a hybrid computer-readable representation comprising the recipient skeletal fragment and the portion of the donor skeletal fragment during or after the positioning; and
providing the hybrid computer-readable representation as an output;
identifying a set of cephalometric landmarks associated with the hybrid computer-readable representation;
calculating a set of cephalometric metrics for the set of cephalometric landmarks that are identified;
compar

Assignees

• Univ Johns Hopkins
• Us Navy
• The Us Secretary Of Defense

Inventors

• Gordon Chad
• Armand Mehran
• Murphy Ryan
• Grant Gerald
• Liacouras Peter
• Wolfe Kevin
• Basafa Ehsan

Classifications

• A61B2034/108

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

• A61B2034/105

  Modelling of the patient, e.g. for ligaments or bones · CPC title

• G16H50/50

  for simulation or modelling of medical disorders · CPC title

• A61B17/1739

  specially adapted for particular parts of the body · CPC title

• A61B2034/2051

  Electromagnetic tracking systems · CPC title