The Johns Hopkins University

USA As Represented by Secretary of the Navy

The United States of America As Represented by the Secretary of

Other

Gerald T Grant

Chad R Gordon

Mehran Armand

Peter Liacouras

Ryan J Murphy

Kevin David Wolfe

Ehsan Basafa

Ryan Patrick Murphy

Kevin C Wolfe

Shayne A Kondor

Provided is a surgical method. The method includes detecting a location of a reference unit having a trackable element with a detector, the detector configured to provide at least one signal corresponding to a detected location of at least the reference unit's trackable element; accessing a computer-readable reconstruction of the being's anatomy; accessing a computer-readable reconstruction of an implant; detecting a location of a pointer tool comprising a trackable element with the detector, where the pointer tool is associated with a location of an anatomical feature of interest; accessing at least one computer-readable reconstruction of a trace, the trace corresponding to a geometry of the anatomical feature of interest; and superimposing the at least one updatable, computer-readable trace on the second computer-readable reconstruction of the implant.

Computer-assisted cranioplasty

A surgical guide assembly having an attachment device configured to be coupled to a bone. A cut location indicator is coupled to the attachment device. The cut location indicator identifies a location where the bone is to be cut. An arm is coupled to the attachment device, the cut location indicator, or both. A support structure is coupled to the arm. The support structure is configured to have a trackable feature coupled thereto.

Patient-specific trackable cutting guides

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.

Computer-assisted planning and execution system

A computer-assisted surgical system can include a donor sub-system and a recipient sub-system. The donor sub-system includes a first reference unit having a first trackable element, a fragment reference unit having a second trackable element, and a first detector configured to provide at least one of a first signal corresponding to a detected location of one or more of the first trackable element and the second trackable element. The recipient sub-system includes a second reference unit having a third trackable element, and a second detector configured to provide at least one of a second signal corresponding to a detected location of at least the third trackable element.

Computer-assisted face-jaw-teeth transplantation

Disclosed is a method of simulating mastication. The method includes obtaining computer-readable three-dimensional representations of a first skeletal fragment including a portion of at least one of a mandible and a maxilla and of a recipient skeletal fragment including a portion of at least one of a mandible and a maxilla. The method also includes obtaining placement data and obtaining muscle insertion data. The method also includes simulating a contraction of a muscle positioned according to the muscle insertion data in a representation of a surgical hybrid comprising at least a portion of the first skeletal fragment positioned according to the placement data relative to at least a portion of the recipient skeletal fragment. The method also includes outputting a representation of mastication represented by the simulating.

Orthognathic biomechanical simulation

A heading positioning apparatus and the method of use for cone-beam computed tomography (CBCT), and single photon emission computed tomography (SPECT).

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Kensington, MD, United States of America

Gerald T Grant