Patient-specific expandable spinal implants and associated systems and methods
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Publication Number
US-12232980-B2
Publication Date
2025-02-25
Expiration Date
Abstract
A device for performing intervertebral body fusion between at a vertebral joint, and associated systems and methods for manufacturing the device are disclosed herein. In some embodiments, the device includes an expandable main body configured to be locked in a desired configuration between a superior and an inferior vertebrae at the vertebral joint to facilitate the intervertebral body fusion at the vertebral joint. A first endplate is connected to the main body. The first endplate can include a superior surface having one or more patient-specific features configured to engage and mate with an inferior surface of the superior vertebra. A second endplate is connected to the main body. The second endplate can include an inferior surface having one or more patient-specific features configured to engage and mate with a superior surface of the inferior vertebra.
Core Innovation
The invention provides a system including an expandable interbody device for intervertebral body fusion between a superior vertebra and an inferior vertebra of a vertebral joint of a patient. The expandable interbody device includes a first endplate having a first patient-specific configuration configured to mate with a first vertebral body of the patient and a second endplate having a second patient-specific configuration configured to mate with a second vertebral body of the patient, where the second patient-specific configuration is different from the first patient-specific configuration. A body positioned between the first endplate and the second endplate includes an expansion mechanism configured to adjust a distance between the first endplate and the second endplate.
The expandable interbody device further includes a first joint and a second joint coupling the endplates to the body. Each joint permits at least partial rotation relative to the body for a range of motion having multiple degrees of freedom specific to the patient, and the joints are lockable joints having unlocked and locked configurations in which the endplate is moveable or not moveable relative to the body. The first and second lockable ball joints cooperate to achieve a corrected anatomical configuration at a corrected disc height when the expandable main body is locked in an expansion configuration.
The system includes surgical plan information viewable on a user device, including images of collapsed and expanded versions of the expandable interbody device and information for corrected disc height and corrected anatomical configuration. A surgical plan shows the first joint and the second joint articulated to achieve corrected anatomical configuration at the corrected disc height for a spinal segment of the patient after the expandable interbody device is implanted and expanded in the patient. The system additionally provides a virtual model of an expandable interbody device in an expanded configuration to achieve a corrected disc height and a predicted anatomical configuration, and a surgical plan including an image of the virtual model and information for the predicted anatomical configuration.
Claims Coverage
The independent claims in the provided set are clm-00001, clm-00006, clm-00010, clm-00018, and clm-00030. Across these, the main inventive features include a patient-specific expandable interbody device with patient-specific differently configured endplates, an expansion mechanism adjusting endplate spacing to achieve corrected disc height, multi-degree-of-freedom lockable joints to achieve corrected anatomical configuration, and surgical plan or virtual model information showing collapsed/expanded states and predicted or corrected anatomy.
Patient-specific expandable interbody device with differently configured endplates and distance adjustment
An expandable interbody device with a first endplate having a first patient-specific configuration configured to mate with a first vertebral body of a patient; a second endplate having a second patient-specific configuration configured to mate with a second vertebral body of the patient and being different than the first patient-specific configuration; and a body positioned between the endplates including an expansion mechanism configured to adjust a distance between the first endplate and the second endplate.
Multi-degree-of-freedom lockable joints for patient-specific rotation and corrected anatomical configuration
A first joint coupling the first endplate to the body and permitting the first endplate to at least partially rotate relative to the body for a first range of motion having multiple degrees of freedom specific to the patient, and a second joint coupling the second endplate to the body and permitting the second endplate to at least partially rotate relative to the body for a second range of motion having multiple degrees of freedom specific to the patient, wherein at least one joint is a lockable joint having an unlocked configuration where the endplate is moveable relative to the body and a locked configuration where the endplate is not moveable relative to the body.
Surgical plan showing collapsed and expanded device states with corrected disc height and articulated joints
A surgical plan viewable on a user device including information for a collapsed version and an expanded version of the expandable interbody device, where the surgical plan includes at least one image of the expandable interbody device expanded to achieve a corrected disc height and shows the first joint and the second joint articulated to achieve corrected anatomical configuration at the corrected disc height after implantation and expansion.
Virtual model and surgical plan predicting corrected disc height and predicted anatomical configuration with joint-coupled locking
A virtual model of an expandable interbody device in an expanded configuration to achieve a corrected disc height and a predicted anatomical configuration, and a surgical plan viewable on a user device including an image of the virtual model and information for the predicted anatomical configuration, where at least one joint coupling is configured with a patient specific range of motion based on the first endplate and the second endplate such that the predicted anatomical configuration is achieved when the joint is locked.
Pre-expansion and post-expansion anatomical information based on locked expanded state for corrected disc height fixation
A surgical plan viewable on a user device including pre-expansion anatomical information and post-expansion anatomical information of a patient based on the expandable interbody device being in a locked expanded state to achieve a corrected disc height for fusion of adjacent vertebrae, where at least one joint coupling configured with a patient specific range of motion achieves corrected fixation between the adjacent vertebrae at the corrected disc height when the device is implanted and expanded.
Overall, the claim set covers systems that combine a patient-specific expandable interbody device with differently configured endplates and an expansion mechanism to adjust endplate distance for corrected disc height, multi-degree-of-freedom joints that can be locked to achieve a corrected anatomical configuration, and surgical plan and/or virtual model information viewable on a user device showing collapsed/expanded states and predicted or corrected anatomy.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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