9 results about "Ischial tuberosity" patented technology

An adjustable support for differentially adjusting the height of a user's ischial tuberosity to relieve pain from sitting is disclosed. The support includes an adjustable left and right platform, each including at least one stackable lift having a stiffness sufficient to provide pressure to lift the sitz bone(s). Each lift is shaped and sized so that it can be securely stacked on top of the other. The stackable lifts may be connected along an inner edge in a hinged manner or can be received within at least one pouch and movable between the left and right platforms. To lift the height of the lower sitz bone the right and left platforms have a differential height between them, determined by the amount of adjustment needed. The differential adjustable seating height creates a counterbalancing repositioning of the sitz bones relieving the asymmetrical pressure of the sacral / lumbar complex caused by misalignment.

This invention discloses a combined anatomical plate and operating tools for posterior approach reduction of acetabular fractures, including a locking plate and a reduction plate. The locking plate is an arc-shaped strip plate that fits above the greater sciatic notch and has screw holes. The locking plate has a screw rod with a nut. The reduction plate includes a first plate, a second plate, and a third plate, all integrally formed and each having screw holes. The first plate is curved to fit the anatomical structure above the acetabulum. The second plate intersects with the locking plate. The third plate is curved to fit the anatomical structure of the acetabular quadrilateral. In this invention, the third plate is tightly fitted to the quadrilateral, and the first screw hole of the locking plate is fixed to the ischial tuberosity with screws. The reduction tool is used to lift and twist the reduction plate assembly. The lifting action of the third plate on the quadrilateral pulls the quadrilateral protruding into the pelvic cavity outward, achieving reduction and fixation of the central dislocation of the hip joint.

The present invention provides a cushion that can more easily support the load concentrated from the user's ischial tuberosities. [Solution] The cushion 10 comprises a base cushion sheet 18 with two storage compartments 26 positioned to overlap the ischial tuberosities Z of a seated user M, and load-supporting cushions 20 which are arranged within the storage compartments 26 and have a higher density than the base cushion sheet 18.

The utility model relates to a waist protection cushion for maintaining pelvis stability and lumbar vertebra physiological curvature, and belongs to the technical field of ergonomic protectors. Through a bionic curved surface and biomechanical coupling system, the cushion solves the problems of non-physiological backward movement of lumbar vertebra, sacrum suspension, insufficient biomechanical synergy and the like caused by fixed encircling type side wings and single ischial support design of a traditional waist protection cushion, and has the core innovation points that 1, a central convex curved surface adopts a composite curvature structure, so that the shape of the central convex curved surface is more than that of the central convex curved surface, and the shape of the central convex curved surface is more than that of the central convex curved surface; a lumbosacral continuous supporting area is covered, local pressure concentration is reduced, and the lumbar vertebra physiological curvature is adapted; 2, the non-encircling side wing curved surfaces allow the waist to naturally twist and laterally bend through backward gradual curvature change, so that the degree of freedom of movement is improved; 3, according to the ischium bearing area, the outer edge of the ischium tuberosity is covered by 10-15 mm through the bidirectional diffusion design, the W-shaped transverse radian and the V-shaped longitudinal radian are matched with 90% or above of the hip shape (according to GB / T 10000-2023), and pressure distribution is improved;

The invention relates to the technical field of medical instruments, and discloses an anorectal postoperative anti-compression device provided with a pressure adjusting airbag, the anorectal postoperative anti-compression device comprises a supporting part, the supporting part comprises a bottom plate, the outer side of the bottom plate is rotatably connected with two side plates, and the two side plates are symmetrically distributed with the bottom plate as the center; and the crissum supporting part comprises a bracket which is arranged above the bottom plate. The anorectal postoperative anti-compression device provided with the pressure adjusting air bag can effectively solve the problems that in the prior art, due to the fact that the wound surface of an anorectal postoperative patient is located in a crissum core stress area, when the patient sits down, the contact pressure between the hip and a supporting face is mainly concentrated on the ischial tuberosity and the crissum area, and the pressure is too high. When a patient tries to slightly adjust the gravity center, an existing device cannot synchronously adapt to body position changes, relative friction between the wound surface and the edge of the device is easily caused, and pain or wound surface tearing is caused.

The invention discloses an anorectal minimally invasive surgery type planning system based on AI, and relates to the technical field of computer assistance. The method is used for solving the problems that in a traditional fistula operation mode, starting point positioning depends on experience, fistula walking recognition is incomplete, and incision design is not individualized. The method comprises the following steps: firstly, segmenting a dentate line region through a U-Net network, enhancing tubular characteristics through Hessian filtering, extracting anal sinus morphological characteristics, inputting the anal sinus morphological characteristics into a classification network, and determining space coordinates of the anal sinus of a fistula origin; then, taking the coordinate as a starting point, tracking along a fistula main axis by adopting a direction constraint region growth algorithm, calculating the minimum distance between the fistula and sphincter, and constructing a three-dimensional relation map; evaluating stress changes of the sphincter in different separation paths by combining finite element analysis, and generating an optimized path with the minimum stress; and finally, establishing a projection coordinate system by taking the ischial tuberosity as a mark, fusing the tension distribution, the skin tension line and the nerve and blood vessel bundle projection, and generating an individualized arc-shaped minimally invasive incision trajectory.

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.

To provide a sitting position assist device that allows a person to sit comfortably and provides a sitting position environment that reduces fatigue. [Solution] The seat body 10 includes an ischial tuberosity accommodation portion 11 consisting of a recess or through hole that accommodates the ischial tuberosities, and a support portion arranged around the ischial tuberosity accommodation portion 11, the support portion including a sacrum support portion 25 arranged in the rear center of the ischial tuberosity accommodation portion 11, a pair of left and right buttock support portions 27 arranged on either side of the sacrum support portion 25, a pair of left and right greater trochanter support portions 21 arranged on both sides of the ischial tuberosity accommodation portion 11, and a pair of left and right lesser trochanter support portions 23 arranged in front of the ischial tuberosity accommodation portion 11, and has an inclined surface that rises outward from the ischial tuberosity accommodation portion 11 as a starting point, and the ischial tuberosity accommodation portion 11 is at the lowest position on the seat body 10.