18 results about "Ischial tuberosity" patented technology

The invention belongs to the field of furniture, and discloses a backrest rotating center self-adaptive adjusting system and method.The backrest rotating center self-adaptive adjusting system comprises a matrix pressure sensor, a backrest, a backrest rotating support connected with the backrest and a backrest transverse movement driving mechanism connected with the backrest rotating support; and the backrest transverse movement driving mechanism comprises a plurality of pressure sensors which are arranged in an array, is arranged at the bottom of the chassis and is used for driving the backrest rotating bracket to move back and forth together with the backrest. Therefore, the rotation center of the backrest is adjusted. The position of the human ischial tuberosity point on the seat surface is detected, the position of the human trunk rotating shaft is calculated, the rotating center of the backrest is adjusted to the position coinciding with the rotating center of the human body in the horizontal direction, the phenomena of back rubbing and waist losing caused by unreasonable arrangement of the rotating shaft of the backrest are eliminated, reasonable support is provided for the human body in the backward leaning state, and the human body is more comfortable. Human body waist and back injury caused by long-term use of unreasonable office chairs is avoided.

A seating configuration is described. The seating configuration includes a first support surface configured to support the Ischial Tuberosities of a user. The first support surface includes a feature to urge a user into an optimal position on the seat. The seating configuration includes a second support surface positioned adjacent a pelvic-sacral-lumbar region of the user. The seating configuration includes a third support surface positioned adjacent a thoracic-cervical region of the user. The first, second, and third support surfaces, respectively, together can be configured to create a natural alignment of a spinal column of the user.

The invention discloses a method for improving the comfort level of a cushion. The cushion is divided into a pressure relief area, a bearing area and a load bearing area in the front-back direction according to the sitting pressure distribution of a human body; the pressure relief areas correspond to popliteal fossa and thighs, two pressure relief parts are formed through thinning treatment, the hardness is reduced to release pressure, and leg numbness caused by long-time sitting is relieved; the bearing area is thinned at intervals aiming at the thigh root and hip muscles, the thickness is controlled, and the supporting performance and the comfort degree are balanced; the bearing area corresponds to the ischial tuberosity and is filled with a high-hardness and high-elasticity auxiliary bearing body after being thinned, supporting performance is guaranteed preferentially, and meanwhile the main body part is used for buffering pressure. The areas are thinned by different thicknesses to generate different deformations, so that the pressure of a human body is dispersed, and accurate support is realized; according to the method, the limitation of single material or simple partition of a traditional cushion is broken through, based on ergonomic design, the hardness of each area of the cushion is made to meet the requirements of different parts, long-time sitting discomfort is effectively relieved, and the overall sitting comfort and health performance are improved.

The invention discloses a multi-subgroup hip joint dysplasia classification method and system, and belongs to the field of artificial intelligence. Comprising the following steps: acquiring a pelvis normal position X-ray film image of a patient, and preprocessing the image; a rough classification network is constructed, general features in the image are extracted to obtain a rough classification result for identifying the rough type of the dysplasia of the hip joint, and the general features comprise contours and textures; a fine classification network is constructed, on the basis of the graph convolution network, classification results are refined by additionally increasing expression information of anatomical key points on the basis of coarse classification results, and the anatomical key points comprise the highest point of the ilium, the outermost edge of the acetabulum, the center point of the femoral head, the teardrop point and the lowest point of the ischial tuberosity; and outputting a fine classification network result. According to the method, the system generalization can be improved while the classification efficiency and accuracy are improved.

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;

A sitting posture classification method based on a seat cushion, which belongs to the technical field of sitting posture classification. The present invention solves the problems of low classification accuracy, high cost and poor adaptability existing in the traditional sitting posture classification method. In the present invention, force-sensitive resistors and accelerometers corresponding to the ischial tuberosities and thigh regions of the human body are fixed on the seat cushion body, which can comprehensively and effectively collect human sitting posture signal data and effectively reduce the cost of sitting posture classification. By solving the pressure-acceleration sitting posture signal data correlation degree index matrix, the data strongly related to sitting posture classification are screened out; the signal data strongly related to sitting posture classification screened out are fused to effectively establish the connection between the data. Finally, by constructing the correlation degree feature distance and the correlation degree feature distance classification algorithm, the signal data to be classified and the fusion result are processed together to obtain the human sitting posture classification result. The method of the present invention can be applied to the field of human sitting posture classification.

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.

A seating configuration is described. The seating configuration includes a first support surface configured to support the Ischial Tuberosities of a user. The first support surface includes a feature to urge a user into an optimal position on the seat. The seating configuration includes a second support surface positioned adjacent a pelvic-sacral-lumbar region of the user. The seating configuration includes a third support surface positioned adjacent a thoracic-cervical region of the user. The first, second, and third support surfaces, respectively, together can be configured to create a natural alignment of a spinal column of the user.

The invention belongs to the field of furniture, and discloses a backrest rotation center self-adaptive adjustment method which comprises the following steps: step 1, collecting seat surface pressure, identifying the positions of ischial tuberosities on two sides of a human body according to the seat surface pressure distribution, and calculating the positions of hip joints of the human body according to the positions of the ischial tuberosities on two sides of the human body; 2, according to the position of the hip joint of the human body, adjusting the rotation center of the backrest to move to the position the same as the coordinates of the hip joint of the human body in the front-back direction. The position of the human ischial tuberosity point on the seat surface is detected, the position of the human trunk rotating shaft is calculated, the rotating center of the backrest is adjusted to the position coinciding with the rotating center of the human body in the horizontal direction, the phenomena of back rubbing and waist losing caused by unreasonable arrangement of the rotating shaft of the backrest are eliminated, reasonable support is provided for the human body in the backward leaning state, and the human body is more comfortable. Human body waist and back injury caused by long-term use of unreasonable office chairs is avoided.

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.

This device is an acupressure device for applying pressure to the pelvic floor. It is molded from a resin material with moderate elasticity, and is compact, palm-sized, with a length D1 of approximately 90 mm at its widest point and a height D2 of approximately 59 mm. The user places the device on a seat, such as a chair or the floor, sits on it, and applies pressure to the pelvic floor using their body weight. When the user sits on the device, the multiple protuberances 11-14 press from below on the left and right areas of the user's pelvic floor, bounded by the ischial ramus, ischial tuberosity, sacrotuberous ligament, anus, and coccyx. This allows the device to loosen these areas, which are areas that can be effectively used to improve urinary incontinence. Of the protuberances 11-14, protuberances 11 and 12 correspond to the user's left pelvic floor, and protuberances 13 and 14 correspond to the user's right pelvic floor. Additionally, the bottom surface of this product, which is the surface that rests on the seat, is formed convexly in the front-to-back direction of the user when they are sitting on the product. This induces forward and backward tilt of the pelvis, allowing the user to naturally apply appropriate pressure to the left and right pelvic floors to massage and loosen them. The front and back directions of the user when using this product are indicated by the arrows in "Reference Figure 2 Showing the Names and Sizes of Each Part." The symbols in the above explanation are attached to "Reference Figure 1 Showing the Names and Sizes of Each Part" and "Reference Figure 2 Showing the Names and Sizes of Each Part."

The utility model relates to the field of medical instruments, in particular to a haemorrhoids postoperative anus dressing patch which comprises an absorption part, the absorption part is made of soft materials and provided with a contact face, a back face and side faces, the contact face and the back face are connected through the side faces, the size of the contact face is larger than that of the back face, and the side faces have radians. A dressing pad is embedded in the front face of the contact face, a connecting band is arranged on the side face, a tail wing is arranged at one end of the connecting band, an adhesive layer is arranged on the surface of the tail wing, and a tearable film is arranged on the surface of the adhesive layer. The absorbing part is arranged at the proper position of the anus of a patient, the dressing pad is in contact with the stoma position, then the tail wing is pulled to the proper position of the hip of the patient, the tearable film on the tail wing is torn down, and the adhesive layer on the surface of the tearable film is fixed to the approximate ischial tuberosity position of the hip of the patient. The dressing pad is in direct contact with the stoma, the shape of the absorbing piece conforms to the anatomical characteristics of the buttocks of the human body, a certain activity space is formed when the patient moves, and the dressing pad is prevented from falling off.