10 results about "Acetabular fossa" patented technology

The application relates to a hip joint prosthesis, which comprises an interposition acetabulum prosthesis and a femoral head reconstruction device. The interposition acetabulum prosthesis is connected with the acetabular fossa of the pelvis stably through an interposition acetabulum cup, a fixing screw and an interposition acetabulum liner, and the adaptability and stability are enhanced through multiple designs such as petal opening and damping parts; the femoral head reconstruction device comprises a joint friction surface prosthesis and a bone ingrowth support cage, and the reconstruction and stable support of the femoral head are realized. The application achieves the technical effects of improving the stability and durability of the hip joint prosthesis, reducing the postoperative discomfort of patients and promoting the growth of bone tissue.

The utility model discloses an acetabular fossa positioning tool for hip joint surgery, and relates to the technical field of total hip joint replacement. The damping device comprises a mounting frame, a mounting hole is formed in one side of the mounting frame, a damping ball joint is mounted on one side of the mounting frame, a ball body is mounted in the damping ball joint, a connecting rod is fixedly connected to one side of the ball body, a supporting rod is arranged on one side of the connecting rod, and the supporting rod is fixedly connected to the other side of the mounting frame. An extension rod is arranged on one side of the supporting rod, and a fixing shell is arranged on one side of the extension rod. According to the utility model, the pressing block is pressed downwards, the spring is compressed under stress, then the pressing block descends into the positioning groove, and then the extension rod is dragged to enable the movable rod to move in the supporting rod in a limited manner; and the pressing block is moved to the interior of the next clamping groove and then is reset to the interior of the clamping groove by virtue of the elasticity of the spring, so that the current extending distance is positioned, and the effect of conveniently adjusting the use length is achieved.

This application relates to the field of medical device technology, and in particular to a modular bio-ring reconstruction integrated device for the acetabulum, comprising a combined reconstruction ring and a bio-reconstruction support. The combined reconstruction ring is embedded in the acetabular fossa and forms a metal trabecular bone to reconstruct a complete acetabular fossa. The bio-reconstruction support is connected to the combined reconstruction ring and is used to connect the combined reconstruction ring to the acetabulum. This application has the effect of improving the inability to provide effective support and stable reconstruction for the acetabulum.

The application provides a hip CT image segmentation method based on deep learning. The method comprises the following steps: acquiring a hip CT image to be processed; performing coarse segmentation on the input image through a neural network segmentation positioning module to obtain coarse segmentation results of the hip bone and the femur and positioning results of the centers of left and right acetabular fossae; performing fine segmentation on the centers of the acetabular fossae through a Transformer-based fine segmentation module to obtain fine segmentation results of the acetabular fossae and the femoral head; replacing the voxel point categories under the corresponding coordinates in the coarse segmentation results with the categories of the fine segmentation results to realize the fusion of the two results and obtain the final segmentation results. Compared with the prior art, the method provided by the application simplifies the model, improves the processing capacity of interlayer information, avoids the influence of noise and artifacts, has better algorithm stability, and effectively improves the segmentation accuracy of the lesion.

The utility model discloses a hip joint holding device for a hip joint replacement surgery navigation system, which is characterized in that a hip joint holder is fixed by a mechanical arm, and a flexible component is arranged between the hip joint holder and the mechanical arm, so that the depth and the force of a grinding file can be effectively controlled, the size of an acetabular fossa of the grinding file is greatly increased, and the grinding file is more stable. The flexible assembly is additionally provided with a lamp belt, different states are displayed for operation of the mechanical arm through the color of the lamp belt, the flexible ring is additionally provided with a binding belt groove, a binding belt can be fixed in the groove when a sterile cover is sleeved, the binding belt is prevented from falling off, and the sterile space is prevented from making contact with bacteria substances.

The present application relates to the technical field of medical devices, and specifically provides a method, device, equipment and storage medium for automatically positioning and calculating the size of a hip socket. The method comprises: obtaining CT image volume data; segmenting to obtain a hip bone model and image data, and performing 2D projection under different projection directions; using a Hough circle detection method to detect circles in the 2D projections in different directions, to locate the position of the hip socket; calculating the center and radius of the hip socket to obtain the size of the hip socket. The present application automatically detects the position of the hip socket using the Hough circle detection method, and can automatically select points in the hip socket, thereby calculating the size of the hip socket. Compared with the manual point selection method of the prior art, the method provided by the present application saves manpower and time, improves the accuracy and consistency of the calculation results, and greatly facilitates the operation of doctors.

The invention relates to an acetabular cup prosthesis calibration device and an acetabular cup prosthesis calibration method. The pose of a calibration block at an initial position and the distance between the initial position and a calibration position are obtained. By acquiring the pose of the axis of the calibration block and the pose of the first sleeve, the pose of the calibration block at the calibration position, namely the vertex position of the prosthesis, can be calculated. The radius of the acetabular cup prosthesis can be calculated as long as the inner diameter of the first sleeve is known. The sphere center of the acetabular cup prosthesis is collinear with the axis of the calibration block, so that the sphere center of the acetabular cup prosthesis can be obtained according to the vertex pose and the radius. The position of the acetabular fossa and the position of the acetabular fossa are known, so that the robot-assisted navigation system can design the motion trail of the prosthesis, and then the acetabular cup prosthesis is driven by the prosthesis mounting actuator on the mechanical arm to move along the preset trail, so that the acetabular cup prosthesis can be accurately assembled to the acetabular fossa with proper press-fit force, and the operation efficiency and the operation success rate are improved.

Disclosed in the present application are a method and apparatus for mirroring processing-based determination of acetabular cup prosthesis information. The present application relates to the field of information processing. The method comprises: acquiring a three-dimensional bone model of a patient, and establishing a coordinate system in the three-dimensional bone model according to target feature points in the three-dimensional bone model, wherein the three-dimensional bone model at least comprises a three-dimensional model of the pelvis of the patient; when the affected-side acetabular fossa is incomplete, performing mirroring processing on a healthy-side pelvis model in the three-dimensional bone model according to the coordinate system, and determining information of the affected-side acetabular fossa according to the mirrored healthy-side pelvis model; and determining prosthesis information of an acetabular cup prosthesis according to the information of the affected-side acetabular fossa, wherein the prosthesis information comprises at least one of the following: a prosthesis model and a prosthesis implantation position. The present application solves the technical problem in the related art where the accuracy of prosthesis information is low when determining prosthesis information of an acetabular cup prosthesis according to the affected-side acetabular fossa of a patient.

The invention relates to an end effector and a surgical system. The end actuating mechanism comprises a first rotary joint and a linear joint, and the linear joint is provided with a coupling part used for being coupled with the surgical instrument, so that the axis of the surgical instrument and the first axis intersect at the telecentric point position. Taking a surgical instrument as an acetabulum file as an example, the acetabulum file is driven by the linear joint to move to a limit position, so that the sphere center of the acetabulum file is just coincided with a telecentric point. Therefore, under the action of the first rotating joint, the acetabulum file can rotate around a telecentric point, namely, the acetabulum file moves in a conical space with the acetabulum as the center, so that the acetabulum file can file an acetabular fossa from all directions, the file grinding efficiency is higher, and the file grinding quality is better; and moreover, the acetabulum file rotates around the telecentric point, so that the acetabulum file does not need to worry about grinding off areas outside the target acetabulum fossa, the over-grinding condition is avoided, and the acetabulum fossa contour and size precision of the grinding file are ensured.

The application relates to a hip joint anatomical landmark point recognition method and system, which comprises the following steps: loading three-dimensional mask data containing femur and hip bone segmentation labels, extracting a bone surface point cloud and converting the same to a physical coordinate system; automatically screening a complete data side by comparing the number of bilateral point clouds; based on the complete femur point cloud, sequentially recognizing the femoral head center, lesser trochanter, femoral neck isthmus center and femoral shaft center point through geometric fitting and extreme value search; based on the same side hip bone point cloud, recognizing the acetabular fossa center, ischial tuberosity, pubic symphysis and anterior superior iliac spine point; finally, converting the landmark points to a three-dimensional model standard coordinate system and generating a visual model. The application realizes automatic and high-precision recognition of key anatomical landmark points of the hip joint, does not require manual intervention and a large amount of training data, has strong robustness, can be directly compatible with a three-dimensional surgical planning system, and significantly improves preoperative planning efficiency and accuracy.