4 results about "Motion preservation" patented technology

Disclosed are devices, systems and methods for inserts for sacroiliac joint arthroplasty, which can include the employment of a longitudinal bone screw and associated threaded cylindrical sleeve, received on a proximal end of the bone screw, with a collet, nut or other securement feature holding the sleeve onto the screw. The sleeve can selectively articulate and / or be immobilized relative to the bone screw, with the system allowing for, at a surgeon's option, motion preservation between bone surfaces in some surgical applications while being utilized as an immobilizing and / or fusion construct between bone surfaces during other surgical applications.

Disclosed are devices, systems and methods for inserts for sacroiliac joint arthroplasty, which can include the employment of a longitudinal bone screw and associated threaded cylindrical sleeve, received on a proximal end of the bone screw, with a collet, nut or other securement feature holding the sleeve onto the screw. The sleeve can selectively articulate and / or be immobilized relative to the bone screw, with the system allowing for, at a surgeon's option, motion preservation between bone surfaces in some surgical applications while being utilized as an immobilizing and / or fusion construct between bone surfaces during other surgical applications.

This invention discloses a text-driven human motion editing method based on comprehensive positive and negative supervised learning, belonging to the fields of artificial intelligence and computer vision. The method comprises two stages: model training and application. In the training stage, the original motion, target motion, and positive and negative text instructions are acquired. After feature extraction and fusion, these are input into a diffusion Transformer model for denoising and prediction. The core lies in simultaneously calculating three losses: retrospective feature supervision, motion preservation, and triple semantic alignment, and jointly optimizing them with the model's main loss to obtain a comprehensively supervised motion editing model. In the application stage, user instructions and the motion to be edited are input into the model, which outputs a target motion that accurately responds to semantics while highly maintaining the coherence of non-edited regions. This invention significantly improves editing accuracy, preservation capability, and generation stability through a multi-layered, positive-negative combined comprehensive supervision mechanism.

An interspinous posterior device (IPD) is described. The IPD has a body and bone fixation elements on either side of the body, each of said bone fixation elements having a ratchet locking mechanism for fixing the body to successive spinous processes of a mammalian vertebra. Each of the bone fixation elements is independently adjustable by ratcheting it separately and independently of the other bone fixation elements. The body of the IPD has a dynamic configuration and a non-dynamic configuration, wherein the dynamic configuration allows for both extension and flexion of the successive spinous processes and the non-dynamic configuration prohibits extension of the successive spinous processes. The IPD also includes a removable extension restriction block, wherein the extension restriction block can optionally be inserted in the body to prohibit extension or can be removed from the body to allow extension.