Spine correction appliances, and systems and methods for their manufacture

A system for generating a model of a spine correction appliance to be worn around a torso of a subject for correcting a misalignment in a chain of adjacent vertebrae of a spine of the subject from an initial position to a target position, the system including at least one processor and at least one non-transitory computer-readable memory storing instruction, which, when executed by the at least one processor cause the system to:

• obtain a torso 3D digital model of a torso of the subject, the torso 3D digital model being representative of (i) the spine of the subject including a plurality of vertebrae, a given vertebra of the plurality of vertebrae being associated with a respective initial position and a respective target position;
• and (ii) a current skin surface topography of the torso;
• obtain a raw appliance 3D digital model of the spine correction appliance, the raw appliance 3D digital model,
• the raw appliance 3D digital model having been determined such that the spine correction appliance, manufactured according thereto and worn by the subject, causes at least one of the chain of adjacent vertebrae to displace from the respective initial position the position towards the respective target position thereof;
• the raw appliance 3D digital model being sub-divided into a plurality of sub-regions;
• modulate an initial position of a given sub-region of the plurality of sub-regions to determine a surface of the appliance 3D digital model, by executing an optimization algorithm, the executing comprising:
• iteratively optimizing the initial position of the given sub-region considering an anatomical parameter associated with the torso of the subject when wearing the spine correction appliance, thereby determining, based on the torso 3D digital model, an optimized position for the given sub-region of the raw appliance 3D digital model,
• determine, based on the optimized position for the given sub-region, the surface of the appliance 3D digital model;
• and
• store, in the non-transitory computer-readable memory, data indicative of the appliance 3D digital model.

A computer-implementable method of generating a model of a spine correction appliance to be worn around a torso of a subject for correcting a misalignment in a chain of adjacent vertebrae of a spine of the subject from an initial position to a target position, the method comprising:

• obtaining a torso 3D digital model of a torso of the subject, the torso 3D digital model being representative of (i) the spine of the subject including a plurality of vertebrae, a given vertebra of the plurality of vertebrae being associated with a respective initial position and a respective target position;
• and (ii) a current surface topography of the torso;
• obtaining a raw appliance 3D digital model of the spine correction appliance,
• the raw appliance 3D digital model having been determined based on an at least partial mirroring in the torso 3D digital model of the respective initial position of the given vertebrae relative to an anatomical plane, or based on determining if the given vertebra in the torso 3D digital model is misaligned from the respective target position, such that the spine correction appliance, manufactured according thereto and worn by the subject, causes at least one of the chain of adjacent vertebrae to displace from the respective initial position towards the respective target position thereof;
• modulating an initial position of the raw appliance 3D digital model, the modulating comprising executing an optimization algorithm, the executing comprising:
• iteratively optimizing the initial position of the raw appliance 3D digital model considering an anatomical parameter associated with the torso of the subject when wearing the spine correction appliance, thereby determining, based on the torso 3D digital model, an optimized position for the raw appliance 3D digital model,
• determining, based on the optimized position, the surface of the appliance 3D digital model;
• and
• causing the manufacturing the spine correction appliance according to the determined surface of the appliance 3D digital model.