Patient-specific trackable cutting guides
Inventors
GRANT, Gerald • LIACOURAS, Peter • Gordon, Chad • MURPHY, RYAN • Armand, Mehran
Assignees
United States, Represented By Secretary Of Defence AS • Johns Hopkins University • US Department of Navy • US Department of Defense
Publication Number
US-11742071-B2
Publication Date
2023-08-29
Expiration Date
2034-11-24
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Abstract
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.
Core Innovation
The invention disclosed is a surgical guide assembly for craniomaxillofacial procedures. The assembly includes an attachment device designed to be coupled to a bone, a cut location indicator identifying where the bone is to be cut, an arm coupled to the attachment device and cutoff location indicator, and a support structure attached to the arm configured to have a trackable feature. This assembly enables dynamic tracking during surgical procedures.
The background details that facial transplantation and complex craniomaxillofacial surgery involve significant challenges due to skeletal, aesthetic, and dental mismatches between donor and recipient. Existing computer-assisted surgery (CAS) systems are limited in providing combined preoperative planning and intraoperative navigation with real-time feedback, especially in complex anatomical regions such as the facial skeleton. Moreover, there is no current single platform that integrates planning and navigation simultaneously, or that offers customizable features addressing size mismatches and dynamic intraoperative updates.
Claims Coverage
The patent includes one independent claim that encompasses a surgical guide assembly system with coordinated implant and recipient guide assemblies, integrating tracking and networked workstations for simultaneous donor and recipient surgeries.
Integrated surgical guide assemblies with trackable features for donor and recipient
The system comprises an implant surgical guide assembly and a recipient surgical guide assembly, each having an attachment device configured to couple to bone structures and trackable features. These assemblies are dynamically tracked in three-dimensional space by trackers to provide intraoperative positioning feedback.
Networked workstations enabling integrated planning and navigation
Two or more networked computer workstations are concurrently used in planning and navigation of simultaneous surgeries for both donor and recipient irrespective of geographic proximity, facilitating real-time communication and coordinated surgical procedures.
The claims cover an integrated system combining patient-specific surgical guides with trackable features and computer workstations linked for simultaneous intraoperative planning and navigation of donor and recipient craniomaxillofacial surgeries.
Stated Advantages
The system provides a single, fully integrated platform allowing pre-operative planning, intraoperative navigation, and dynamic instantaneous feedback.
It enables improved accuracy and precision in complex craniomaxillofacial surgeries, including facial transplantation.
The use of patient-specific cutting guides with trackable features increases surgical accuracy during osteotomies.
Real-time visualization and dynamic cephalometric feedback improve alignment of skeletal and dental structures, enhancing aesthetic and functional outcomes.
The networked system supports simultaneous tracking of donor and recipient surgical procedures, facilitating coordinated and efficient operations.
Documented Applications
Facial transplantation surgery addressing skeletal, aesthetic, and dental discrepancies between donor and recipient.
Craniomaxillofacial surgery including orthognathic, neurosurgical, and head/face/neck surgical procedures.
Computer-assisted cranioplasty involving customized cranial implants for reconstruction following tumor resection, trauma, or congenital deformities.
Placement and alignment of osseointegrated dental implants and craniofacial prosthetics requiring precise bone assessment and three-dimensional positioning.
Treatment of craniomaxillofacial trauma including fracture reduction and reconstruction with real-time feedback.
Neurosurgical procedures benefitting from improved intraoperative navigation without the use of bulky skull clamp pins.
Correction of congenital craniofacial deformities through planned osteotomies and real-time intraoperative guidance.
Head and neck reconstructive surgeries post tumor resection, trauma, or aesthetic improvement requiring precise skeletal alignment.
Orthognathic surgery for improved mastication and aesthetics employing pre-fabricated cutting guides and real-time cephalometric feedback.
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