Planning, navigation and simulation systems and methods for minimally invasive therapy

Patent metadata

Field	Value
Publication number	US-9734632-B2
Application number	US-201715422683-A
Country	US
Kind code	B2
Filing date	Feb 2, 2017
Priority date	Mar 15, 2013
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

Disclosed herein are planning, navigation and simulation systems and methods for minimally invasive therapy in which the planning method and system uses patient specific pre-operative images. The planning system allows for multiple paths to be developed from the pre-operative images, and scores the paths depending on desired surgical outcome of the surgery and the navigation systems allow for minimally invasive port based surgical procedures, as well as craniotomies in the particular case of brain surgery.

First claim

What is claimed is:

1. A system for planning brain surgery, comprising:
a) a storage device configured to receive and store therein at least one pre-operative image data set of a patient's brain acquired using at least one imaging modality;
b) a computer processor and associated user interface in communication with said storage device, said processor configured to:
produce an image of a 3D volume of the portion of the brain containing one or more potential sulci entry points into the tissue and one or more targets in the brain to be approached from the at least one pre-operative 3D image data set and store the image of the 3D volume in the storage device;
receive, through the user interface, the inputs including at least a list of one or more sulci entry points into the brain, one or more target locations to be approached, a first target location to be approached first, and a surgical outcome criteria to be satisfied by one or more surgical trajectory paths from the one or more entry points to the first one of the one or more targets;
upon receiving the list of one or more sulci entry points, the first target to be approached and the surgical outcome criteria, compute one or more point-wise surgical trajectory paths from the one or more sulci entry points to the first target location with each point-wise surgical trajectory path passing through one or more associated waypoints between the one or more sulci entry points and the first target location to define one or more surgical trajectory paths from the one or more entry points to the first target location consistent with the surgical outcome criteria;
store the one or more point-wise surgical trajectory paths in the storage medium and visually displaying the one or more point-wise surgical trajectory paths; and
assign a score to the one or more trajectory paths to quantify how well the one or more surgical trajectory paths satisfy the surgical outcome criteria.

2. The system according to claim 1 wherein said computer processor is programmed to compare the scores of the one or more surgical trajectory paths to a score of a path of a shortest distance between the one or more sulci entry points and the first target location.

3. The system according to claim 2 wherein the at least one imaging modality is one selected from a list comprising of ultrasound, magnetic resonance imaging, X-ray computed tomography and positron emission tomography.

4. The system according to claim 3 wherein the at least one imaging modality is two or more imaging modalities, and wherein the computer processor is programmed to co-register the images obtained by the two or more imaging modalities.

5. The system according to claim 2 wherein the at least one imaging modality is magnetic resonance imaging configured for diffusion tensor imaging to give tractography information, and wherein at least one surgical outcome criteria is to compute
one or more surgical preferable pathways which do not intercept white matter brain tracks, or,
one or more surgical preferable pathways which intercept as few white matter brain tracks if not all brain tracks can be avoided, or,
one or more surgical preferable pathways which intercept selected white matter brain tracks chosen by the clinician.

6. The system according to claim 5 wherein said computer processor is programmed with instructions to insert into the 3D image of the brain of the patient an image of a surgical tool to be used to approach the target.

7. The system according to claim 6 wherein said entry points are entry points into the sulci, and wherein said computer processor is programmed with instructions such that upon insertion of the surgical tool into a particular entry point, the image of the 3D volume of the brain is responsively translated, rotated or both, to allow for visualization of the surgical tool at that particular entry point.

8. The system according to claim 7 wherein said computer processor is programmed with instructions to assign different colors to brain tissue types of different structure and function in the image of the 3D volume to allow for visualization and identification of a particular type of tissue being intersected by the surgical tool to infer specific functions being impacted due to tissue intersection with the surgical tool.

9. The system according to claim 8 wherein one of the brain tissue types is brain tracks, and wherein said computer processor is programmed with instructions to assign different colors to functionally different brain tracks based on a direction they extend in the brain and/or a function they perform.

10. The system according to claim 7 wherein said computer processor is programmed with instructions to selectively hide selected portions of the image not in close vicinity to the surgical tool and/or selectively display those portions of the image in close proximity to surgical tool.

11. The system according to claim 10 wherein said computer processor is programmed with instructions to selectively display white matter brain tracts in an immediate vicinity of each surgical path being computed and hide white matter brain tracks in all other regions of the 3D image of the brain.

12. The system according to claim 10 wherein said computer processor is programmed with instructions to selectively display white matter brain tracks being intercepted by the surgical tool along each surgical path being computed.

13. The system according to claim 12 wherein one of said inputs relating to said surgical outcome criteria to be satisfied by one or more surgical trajectory paths from the one or more entry points to the first target includes selecting which white matter brain tracks to intercept and which to avoid intercepting.

14. The system according to claim 5 wherein said computer processor is programmed with instructions to calculate and display an amount of tissue distortion upon the tissue being intercepted by the surgical tool during travel along the one or more point-wise surgical trajectory paths from the one or more entry points to the first target location, based on the tissue type and its associated mechanical properties.

15. The system according to claim 5 wherein the targets being approached are tumors, and wherein said computer processor is programmed with instructions to calculate and display an amount of distortion and/or rolling of the tumor when approached by, and intercepted by the surgical tool, and to calculate and display the distortion and/or rolling of the tumor for a plurality of trajectories of approach.

16. The system according to claim 15 wherein said computer processor is programmed with instructions to, once one or more surgical paths have been computed that satisfy the surgical outcome criteria, visually display a simulation of the surgical tool approaching the tumor along the one or more surgical paths and accessing all portions of the tumor for accomplishing tumor resection.

17. The system according to claim 16 wherein said computer processor is programmed with instructions to display an 3D image of the patient's brain including a skull layer.

18. The system according to claim 17 wherein said computer processor is programmed with instructions to manipulate the surgical tool during said simulation such that a distal end of the surgical tool can access and resect all parts of the tumor while at the same time a proximal end of the surgical tool maps out a path it must follow in order to determine a minimum amount of skull material to be removed during a craniotomy procedure prior to the surgical tool initiating tra

Assignees

• Synaptive Medical Barbados Inc

Inventors

• Thomas Monroe M
• Sela Gal
• Piron Cameron
• Richmond Joshua
• Yuwaraj Murugathas
• Hodges Wes
• Alexander Simon
• Gallop David
• Lau William
• Thingvold Sheryl
• Dyer Kelly

Classifications

• A61B2090/378

  using ultrasound · CPC title

• A61B5/0042

  for the brain · CPC title

• A61B6/032

  Transmission computed tomography [CT] · CPC title

• A61B8/0808

  for diagnosis of the brain · CPC title

• G06T19/20

  Editing of three-dimensional [3D] images, e.g. changing shapes or colours, aligning objects or positioning parts · CPC title