4 results about "High tibial osteotomy" patented technology

The application relates to the technical field of orthopedic surgery navigation, and discloses a high-position tibial osteotomy navigation method, a system and a storage medium, and a communication method which comprises the following steps: generating a 3D bone model of a lower limb of a patient based on medical images and performing preoperative osteotomy planning; performing visual positioning system detection and spatial calibration of a surgical instrument; installing an optical marker array, collecting actual bone point cloud data, and realizing alignment of the model and the bone through a registration algorithm; in-surgery real-time calculation and display of deviation of an operation track and planning parameters; post-surgery reconstruction of a lower limb force line, and comparison and evaluation with preoperative planning and in-surgery navigation records. The system comprises a hardware execution unit and preoperative planning, calibration verification, in-surgery registration, real-time navigation and post-surgery evaluation modules. The application realizes full-process integration of preoperative accurate planning, in-surgery real-time closed-loop navigation and post-surgery quantitative evaluation, and significantly improves the precision, repeatability and predictability of clinical effects of surgery.

The application relates to the technical field of medical devices and discloses a high-position tibial osteotomy osteotomy surface planning method and system and a storage medium. The method first reconstructs a three-dimensional model based on medical images, constructs a local anatomical coordinate system and an initial osteotomy plane; then constructs an osteotomy parameter geometric constraint model, processes parameter interaction by using a linear constraint equation, realizes linkage update of an osteotomy position, depth and lateral hinge retention amount and safety threshold boundary control; further establishes a virtual distraction model, performs a lower limb mechanical force line path pre-performance, and performs instrument interference detection based on a signed distance field; and finally generates a navigation protocol. The application effectively avoids the risk of lateral hinge fracture through a parameter linkage mechanism, realizes accurate prediction of force line correction effect and active avoidance of surgical risks by combining virtual kinematics simulation, and improves the accuracy and safety of preoperative planning.

The guiding device comprises an osteotomy guide plate, an osteotomy groove and a kirschner wire positioning groove are formed in the osteotomy guide plate, two arc-shaped grooves are formed in the middle of the kirschner wire positioning groove and are in threaded connection with a positioning sleeve, the end of the positioning sleeve is conical, through grooves are formed in the two sides of the osteotomy guide plate respectively, and the two arc-shaped grooves are in threaded connection with the positioning sleeve. Therefore, the track of the saw blade can be limited through the osteotomy groove, too deep osteotomy or direction deviation is effectively avoided, meanwhile, the kirschner wire positioning groove is matched with the positioning sleeve to achieve main positioning, kirschner wires can be additionally implanted into the two sides to form multi-point fixing, and the osteotomy guide plate is prevented from rotating and deviating, and the phenomenon that due to individual differences, for example, the front-back diameter of the tibia is large is avoided. The position of the osteotomy guide plate can be adjusted in a translation and sliding mode along the auxiliary kirschner wires on the two sides, osteotomy of the foremost portion and the rear portion of the tibia can be conveniently completed, in addition, the popliteal space baffle assembly can prevent the saw blade from extending towards the popliteal space, damage to blood vessels and nerves is avoided, and operation risks are reduced.

The application discloses a preparation method of an osteotomy gap filling material for tibial high osteotomy. The method comprises the following steps: (1) adding 30-50 parts of biological bone cement powder, 30-50 parts of functional aggregate particles, 5-20 parts of starch powder and 0-2 parts of water-soluble phosphate into a container, and then oscillating and mixing uniformly after being closed; (2) adding 40-80 parts of polyethylene glycol into the container in step (1) after being melted, and then cooling to room temperature after heating and stirring to form a mixture; and rubbing for 1-2 min to form a dough, so that the osteotomy gap filling material for tibial high osteotomy is obtained. The material obtained by the method is anhydrous plastic solid before blood absorption and solidification, can be rubbed into a required shape at will, and can be fully filled into a bone defect to block the osteotomy surface and stop bleeding; the material composition has good osteogenesis promotion capacity and gradient degradation, and finally forms bone healing at the osteotomy gap.