Sternum replacement plate made in one piece
Inventors
TORO RESTREPO, MAURICIO • Martínez Carett, Juan Pablo • Restrepo Mejía, Daniel
Assignees
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Publication Number
US-11510714-B2
Publication Date
2022-11-29
Expiration Date
Abstract
Provided is an implant for sternum replacement including an upper face, a posterior face, extensions for fitting with the ribs and extensions for fitting with the manubrium, wherein that implant is manufactured in a single piece with high performance engineering polymers, with an anatomical adjustment tailored to each patient, which guarantees the reduction of the number of elements in contact with the patient, facilitating and speeding up the surgical procedure, at the same time, the required mechanical and flexibility properties, are guaranteed.
Core Innovation
The invention relates to a sternum implant including a main body section having an upper face and a posterior face, and a patient-tailored structure configured for placement in a patient thorax. The main body section includes a top end configured to be located at the manubrium when fixed to a body of a patient, and a bottom end distal to the top end. The implant includes first extensions for fitting with ribs and second extensions for fitting with the manubrium, the second extensions forming a shape of the top end.
The posterior face geometry is configured to fit the mediastinum, while the upper face, posterior face, first extensions, and second extensions are structurally integral with the main body section, so that the sternum implant is manufactured as a single piece. The bottom end is free of extensions.
The sternum implant is manufactured with engineered polymers, including PEEK and PEKK and/or carbon-fiber-reinforced PEEK, with continuous or discontinuous fibers. The manufacturing is based on CAD/CAM techniques with computer-assisted surgical planning and is performed by machining or additive manufacturing.
Claims Coverage
The independent claim is directed to a sternum implant defined by its single-piece engineered-polymer construction, anatomical-fit faces and extensions, and fixation to a rib bone with screws. The independent claim contains inventive features narrowed in dependent claims by material selection, anatomical geometry, and CAD/CAM/computer-assisted surgical planning and machining/additive manufacturing options.
Engineered-polymer single-piece sternum implant with integral faces and extensions
The upper face, posterior face, first extensions, and second extensions are structurally integral with the main body section as a function of the sternum implant being manufactured as a single piece, with the bottom end free of extensions.
Anatomical-fit main body with rib and manubrium extensions and posterior-face mediastinum geometry
A top end configured to be located at a manubrium when fixed to a body of a patient, first extensions for fitting with ribs, second extensions for fitting with the manubrium and forming a shape of the top end, and a posterior face configured to fit anatomically with a mediastinum.
Engineered polymer material selection including PEEK/PEKK and carbon-fiber-reinforced PEEK with fiber continuity
The sternum implant is manufactured with engineered polymers including PEEK, PEKK, or carbon-fiber-reinforced PEEK with continuous or discontinuous fibers.
Patient tailoring using CAD/CAM with computer-assisted surgical planning
The sternum implant is customized for a patient using CAD/CAM techniques and computer-assisted surgical planning.
Manufacturing by machining or additive manufacturing
The sternum implant is manufactured by machining or additive manufacturing.
Across the independent claim and its dependent refinements, the inventive coverage centers on a single-piece engineered-polymer sternum implant with integral upper and posterior faces and rib/manubrium extensions, a posterior-face geometry for the mediastinum, patient customization using CAD/CAM with computer-assisted surgical planning, and manufacture by machining or additive manufacturing.
Stated Advantages
Reduce infection risk.
Reduce the number of pieces in contact.
Maintain mechanical flexibility.
Maintain biocompatibility.
Documented Applications
Patient-tailored sternum replacement implant for fixation in a patient, including fitting to the manubrium and coupling with the ribs while the posterior face fits the mediastinum.
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