Feedback for providing artificial bone flap

Patent metadata

Field	Value
Publication number	US-2017231771-A1
Application number	US-201515504783-A
Country	US
Kind code	A1
Filing date	Mar 17, 2015
Priority date	Aug 20, 2014
Publication date	Aug 17, 2017
Grant date	—

Abstract

Methods and systems for providing feedback to guide selection of an artificial bone flap. A user interface for planning a neurosurgical procedure is provided, the neurosurgical procedure including closing of an opening in a portion of a patient's skull using an artificial bone flap. 3D dimensions of the opening are determined using at least pre-operative three-dimensional (3D) imaging data. One or more parameters for selecting an artificial bone flap are determined, where the one or more parameters are based on at least the 3D dimensions of the opening. Output indicating one or more recommended available artificial bone flaps suitable for closing the opening is provided, the recommendation being based on the determined one or more parameters.

First claim

1 . A method, in a processor, for providing feedback to guide selection of an artificial bone flap, the method comprising:
providing a user interface for planning a neurosurgical procedure, the neurosurgical procedure including closing of an opening in a portion of a patient's skull using the artificial bone flap; using at least pre-operative three-dimensional (3D) imaging data:
determining 3D dimensions of the opening; and
calculating at least one of: a bone density in a vicinity of the opening or a bone structural integrity in the vicinity of the opening;
determining one or more locations in the vicinity of the opening suitable for attaching a bone flap fastener, the one or more locations being determined to preserve bone structure in the vicinity of the opening as calculated by the calculation; determining one or more parameters for selecting an artificial bone flap for closing the opening, the one or more parameters being based on at least the 3D dimensions of the opening and in order to match bone structure as calculated by the calculation; and providing output indicating:
one or more recommended available artificial bone flaps suitable for closing the opening, based on the determined one or more parameters; and
the one or more locations for attaching the bone flap fastener.

2 . The method of claim 1 , wherein the output indicating the one or more locations for attaching the bone flap fastener comprises a 2D or 3D image of the vicinity of the opening, one or more indications of the one or more locations being overlaid on the 2D or 3D image.

3 . The method of claim 1 , wherein the one or more parameters for selecting the artificial bone flap further comprise one or more of:
the bone density in a vicinity of the opening; the bone structural integrity in the vicinity of the opening; and the one or more locations for attaching the bone flap fastener.

4 . The method of claim 1 wherein the one or more parameters for selecting the artificial bone flap further comprise one or more of:
bone thickness in the vicinity of the opening; and
a patient characteristic.

5 . The method of claim 4 wherein the patient characteristic is one or more of:
patient age; and
patient sex.

6 . The method of claim 1 wherein the pre-operative 3D imaging data comprise at least one of computer tomography (CT) data or magnetic resonance imaging (MRI) data.

7 . The method of claim 1 wherein calculating the bone structural integrity in the vicinity of the opening comprises performing finite element analysis on the pre-operative 3D imaging data.

8 . The method of claim 1 , further comprising:
receiving input defining a boundary of the opening; and calculating the 3D dimensions of the opening using the defined boundary.

9 . The method of claim 8 wherein the input defining the boundary is at least one of:
a set of points positioned along a periphery of the opening;
a trace of a periphery of the opening; and
calculated dimensions determined based on a location of a target and a defined entry point of the neurosurgical procedure.

10 . The method of claim 1 , further comprising:
searching a database of available artificial bone flaps to identify the one or more recommended available artificial bone flaps, by determining one or more available artificial bone flaps satisfying the one or more parameters; and providing the output including identification of the one or more recommended available artificial bone flaps from the database.

11 . The method of claim 1 , further comprising:
after an artificial bone flap has been selected, obtaining 3D dimensions of the selected artificial bone flap; comparing the 3D dimensions of the selected artificial bone flap to the determined 3D dimensions of the opening; and providing further output indicating one or more recommended dimensional modifications to the selected artificial bone flap, based on any differences between the 3D dimensions of the selected artificial bone flap and the determined 3D dimensions of the opening.

12 . The method of claim 11 , wherein the further output comprises one or more recommendations for manually shaping the selected artificial bone flap to more closely approximate the calculated 3D dimensions of the opening.

13 . The method of claim 11 , further comprising:
obtaining intra-operative 3D imaging data of at least the opening; determining, from the intra-operative 3D imaging data, intra-operative 3D dimensions of at least the opening; and using the intra-operative 3D dimensions of at least the opening for the comparing.

14 . The method of claim 1 , wherein the output comprises one or more recommendations for one or more fasteners for fixing the artificial bone flap over the opening.

15 . The method of claim 14 wherein the one or more fasteners comprise one or more of: a bone screw, a bone staple, or a bone adhesive.

16 . A system for providing feedback for selection of an artificial bone flap, the system comprising a processor configured to execute instructions to cause the system to:
provide a user interface for planning a neurosurgical procedure, the neurosurgical procedure including closing of an opening in a portion of a patient's skull using the artificial bone flap; use at least pre-operative three-dimensional (3D) imaging data to:
determine 3D dimensions of the opening; and
calculate at least one of: a bone density in a vicinity of the opening or a bone structural integrity in the vicinity of the opening;
determine one or more locations in the vicinity of the opening suitable for attaching a bone flap fastener, the one or more locations being determined to preserve bone structure in the vicinity of the opening as calculated by the calculation; determine one or more parameters for selecting an artificial bone flap for closing the opening, the one or more parameters being based on at least the 3D dimensions of the opening and in order to match bone structure as calculated by the calculation; and provide output indicating:
one or more recommended available artificial bone flaps suitable for closing the opening, based on the determined one or more parameters; and
the one or more locations for attaching the bone flap fastener.

17 . A computer readable product for providing feedback for selection of an artificial bone flap, the computer readable product comprising computer-executable instructions that, when executed, causes a computer system to:
provide a user interface for planning a neurosurgical procedure, the neurosurgical procedure including closing of an opening in a portion of a patient's skull using the artificial bone flap; use at least pre-operative three-dimensional (3D) imaging data to:
determine 3D dimensions of the opening; and
calculate at least one of: a bone density in a vicinity of the opening or a bone structural integrity in the vicinity of the opening;
determine one or more locations in the vicinity of the opening suitable for attaching a bone flap fastener, the one or more locations being determined to preserve bone structure in the vicinity of the opening as calculated by the calculation; determine one or more parameters for selecting an artificial bone flap for closing the opening, the one or more parameters being based on at least the 3D dimensions of the opening and in order to match bone structure as calculated by the calculation; and provide output indicating:
one or more recommended available artificial bone flaps suitable for closing the opening, based on the determined one or more parameters; and
the one or more locatio

Assignees

• Piron Cameron
• Yuwaraj Murugathas
• Richmond Joshua Lee
• Sela Gal

Inventors

• Piron Cameron
• Yuwaraj Murugathas
• Richmond Joshua Lee
• Sela Gal

Classifications

• A61B6/03

  Computed tomography [CT] · CPC title

• A61F2/30942 Primary

  for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques · CPC title

• A61B6/037

  Emission tomography · CPC title

• A61B17/0642

  for bones, e.g. for osteosynthesis or connecting tendon to bone · CPC title

• A61F2002/2835

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