9 results about "Fracture block" patented technology

The application belongs to the technical field of medical image processing, and particularly relates to a kind of bone fracture block automatic reduction methods based on medical image;Including: obtaining the three-dimensional medical image data and three-dimensional label data after fracture of the object to be processed, and pre-processing the three-dimensional medical image data after fracture;The three-dimensional medical image data after fracture is input into the fracture surface segmentation model trained, and the main bone surface area and fracture block surface area are obtained;Three-dimensional coordinates are extracted and main bone surface point cloud and fracture block surface point cloud are constructed;Iterative closest point registration is carried out on the two kinds, and the cumulative rigid body transformation parameter is obtained;The voxel coordinate set corresponding to the fracture block is determined, and the voxel coordinate set is subjected to spatial transformation using the cumulative rigid body transformation parameter, to obtain the three-dimensional label result after reduction;The application can simultaneously complete the problems of automatic identification of fracture section and automatic solution of fracture block reduction posture, improve the degree of automation, result stability and interpretability of fracture block reduction process.

This invention relates to the field of medical devices. To address the technical problems of easy loss of reduction, uncontrollable pressure, and poor reduction stability when fixing a quadrilateral acetabulum in existing technologies, this invention proposes a pressure-type anatomical reduction device specifically for the quadrilateral acetabulum. The device includes a pressure reduction plate and a limiting fixation plate. One end of the pressure reduction plate is connected to one end of the limiting fixation plate via an arc-shaped connecting section. A conical positioning post is provided on the other end of the limiting fixation plate for pre-positioning a second fracture fragment. The extension direction of the conical positioning post intersects with but is not perpendicular to the axis of the limiting fixation plate. At least one limiting screw hole is provided on the limiting fixation plate, through which the limiting fixation plate attaches and positions the second fracture fragment. Multiple reduction screw holes are provided on the pressure reduction plate, through which the pressure reduction plate applies pressure to reduce the first fracture fragment. Furthermore, this invention also proposes a method for using the pressure-type anatomical reduction device specifically for the quadrilateral acetabulum.

This invention discloses an integrated preoperative planning system and method for locking plates in proximal humeral fractures, comprising: a data preprocessing module for processing CT data; a fracture segmentation and 3D reconstruction module for segmenting and generating fracture fragment models; a target anatomy prediction and fragment disposal module for predicting target anatomical morphology and classifying fracture fragments; a surgical feasibility-constrained virtual reduction module for virtual reduction under anatomical and clinical constraints; a plate fitting and fixation planning module for optimizing plate fit, screw configuration, and generating equivalent fixation parameters; a finite element modeling and solving module for automatic mechanical simulation; and a risk assessment and closed-loop optimization module for assessing risks and triggering replanning to achieve closed-loop optimization. This invention significantly reduces preoperative planning time, improves the mechanical reliability and clinical fit of the plan, and provides a quantitative basis for surgical decisions.

A reduction and fixation auxiliary device for free condylar fractures relates to the field of surgical instrument technology. This invention solves the problem of fragmentation in existing condylar fracture reduction instruments due to the inability to accurately determine the clamping force required for different patients. The invention comprises three clamping heads distributed circumferentially and each hinged to the jaw end of a clamping forceps via a rod. Each clamping head includes a clamping shell, a pressure sensor, and an elastic buffer block. The clamping shell has a groove, the pressure sensor is embedded in the bottom of the groove, and the elastic buffer block fills the groove and covers the pressure sensor. The clamping head contacts the fracture fragment through the elastic buffer block to buffer and transmit the clamping force. The pressure sensor is used to detect the clamping force on the elastic buffer block in real time. This invention is used for the reduction and fixation of free condylar fractures.

The application discloses a surgical method for the reduction and fixation of a posterior cruciate ligament tibial insertion avulsion fracture under the guidance of ultrasound, and is especially suitable for the reduction treatment of a posterior cruciate ligament tibial insertion avulsion fracture. The surgical method comprises the following steps: acquiring fracture information of a patient by means of an ultrasonic positioning device, wherein the fracture information at least comprises position information of a fracture block; planning a surgical path according to the fracture information, wherein the surgical path extends from the body surface of the patient to the fracture block; placing a guide needle along the surgical path, wherein the distal end of the guide needle is arranged close to the fracture block; placing a cannula device along the guide needle, wherein the distal end of the cannula device is arranged close to the fracture block, a working channel is formed in the cannula device, and the guide needle is accommodated in the working channel; performing a reduction operation on the fracture block; making a kirschner wire pass through the working channel and temporarily position the fracture block; opening at least two bone tunnels in a main bone adjacent to the fracture block by means of a drilling device; making a suture thread pass through the at least two bone tunnels; and fixing the two ends of the suture thread.

This invention discloses a fixation device for long bone fractures, belonging to the field of medical devices. It includes a limiting part, a base, elastic sutures, a reduction mesh sleeve, and a support adjustment rod. The limiting part is fixedly connected to the wall of the long bone shaft. The first end of the base is fixedly connected to the limiting part, and the second end of the base has an internally threaded hole extending towards the first end. The elastic suture extends from the second end of the base. Multiple elastic suture threading holes are discretely distributed on the reduction mesh sleeve. One side of the support adjustment rod is threadedly connected to the internally threaded hole, and the other side is fixedly connected to the reduction mesh sleeve. Multiple elastic sutures extending from the second end of the base pass through the fracture fragments at the bone ends and then fix the fracture fragments to the side of the reduction mesh sleeve facing the base via the aforementioned threading holes. This invention enables stable reduction of long bone fracture fragments, and only requires micro-holes for threading at the fracture ends, avoiding the trauma caused by numerous bone screw holes.