184 results about "Joint bone" patented technology

The invention discloses a titanium-based hydroxyapatite composite coating and a preparation method thereof. The problems that a traditional coating is weak in interface bonding, single in porosity and mismatched in drug sustained release are solved. The composite coating comprises a gradient component layer and a bionic porous outer layer which are sequentially stacked on the surface of a titanium substrate, wherein the gradient component layer comprises a bottom layer (a titanium-based hydroxyapatite transition layer, 70-80% of HA and bonded through Ti-O bonds) and a middle layer (an HA / bioglass composite layer, 50-70% of HA and 10-20% of bioglass); the bionic porous outer layer is a porous HA layer, the porosity is 40-60%, the porosity is gradually increased in a gradient mode in the direction away from the titanium substrate, surface layer pores are loaded with anti-infection drugs, and inner layer pores are loaded with bone growth factors. The method realizes improvement of the interface bonding strength of the coating, consideration of mechanical and biological activity and staged slow release of the medicine, and is suitable for the field of bone joint implantation.

The utility model discloses a snake bone joint, a flexible joint assembly and a surgical operation arm, relates to the technical field of medical instruments, and aims to relieve the problem that two snake bones slide in an uncertain dislocation mode when the snake bone joint is bent. The snake bone joint comprises a first snake bone and a second snake bone, the first snake bone and the second snake bone can rotate based on respective pivots, the two pivots are parallel, and the distance between the two pivots is constant; the first snake bone comprises a restraint roller, the second snake bone comprises a restraint hole site, and the restraint roller is movably arranged in the restraint hole site; the restraining hole site comprises a first restraining face and a second restraining face which are oppositely arranged, and the restraining roller arranged in the restraining hole site is clamped between the first restraining face and the second restraining face. Therefore, the snake bone joint has the advantage that the bending precision and the load deformation resistance of the snake bone joint are improved.

Examples in the present disclosure relate to hand chirality estimation. Tracking data captured by one or more sensors associated with an extended reality (XR) device is processed to determine positions of a plurality of joints of a hand of a person. A reference vector is generated based on a first subset of the positions. The first subset of the positions includes positions of at least two metacarpophalangeal joints. A plurality of bending angles is determined based on at least a second subset of the positions. Each bending angle represents an angle between a respective pair of articulating bones that is measured in relation to the reference vector. An estimated chirality of the hand is identified based on the plurality of bending angles. Operation of the XR device is controlled using the estimated chirality of the hand.

The invention relates to the technical field of online detection and analysis, and discloses a bone joint synovial fluid detection and analysis system based on microfluidics, which specifically comprises the following steps: acquiring synovial fluid rheological data and synovial fluid molecular activity data in a bone joint movement process and cartilage surface morphological data in a joint buckling process through a biosensor; constructing a synovial fluid dynamic anomaly analysis model, and performing synovial fluid function anomaly analysis through the synovial fluid rheological data and the molecular activity data; a cartilage stress anomaly analysis model is constructed, and cartilage stress anomaly analysis is carried out through cartilage surface morphological change data; obtaining a synovial fluid function abnormality analysis result and a cartilage stress abnormality analysis result to carry out bone joint function adaptability analysis; and acquiring a bone joint function adaptability analysis result and carrying out synovial fluid function abnormality analysis early warning. The problem that in the prior art, due to the fact that the bionic degree of a detection strategy is insufficient and bone joint dynamic parameters are deficient, the association degree of a static synovial fluid detection result and the actual joint rehabilitation condition of a patient is poor is solved.

The invention relates to the technical field of traditional Chinese medicine, in particular to a composition for relieving knee osteoarthritis and a preparation method of an external patch thereof, the composition comprises a Zhuang medicine component and sweet tea liquid, the Zhuang medicine component comprises a main medicine, a male medicine and an auxiliary medicine, and the main medicine comprises dendropanax dentiger, pseudo-ginseng and radix clematidis; the male medicine is prepared from litsea cubeba, tea pepper, cortex cinnamomi and prostrate centipede; the upper medicine comprises polygonum cuspidatum, philippine flemingia root, bark of himalayan coralbean, radix zanthoxyli and fructus liquidambaris. Compared with the prior art, Zhuang medicine components of a main common helper are configured on the basis of KOA Zhuang medicine pathogenesis and Zhuang medicine pathology, and all the medicines are combined for use, so that the purposes of dispelling wind, eliminating dampness, regulating and smoothing a dragon road and a fire road, promoting blood circulation to arrest pain, tonifying deficiency and strengthening muscles and bones are achieved, and the purpose of treating knee osteoarthritis is achieved; meanwhile, animal experiments and clinical experiments verify the efficacy of the external application agent, and the external application agent has the effect of relieving knee osteoarthritis.

The invention provides an early-stage intelligent diagnosis method for rheumatoid arthritis based on a multi-modal medical image and deep learning, and the method comprises the steps: carrying out the image cleaning and standardization, automatic bone joint positioning and segmentation, and quality control of a multi-modal original data set, and obtaining a joint slice library; performing intra-modal self-supervised pre-training and cross-modal alignment representation, and then performing focus level detection and quantification to obtain a lesion feature vector of each joint; performing joint diagram construction and quality perception multi-modal fusion to obtain fusion feature representation, and performing weak supervision multi-instance learning and multi-task loss calculation based on the fusion feature representation to obtain an uncalibrated model; and carrying out model calibration and explainable output to obtain an intelligent diagnosis model. According to the method, the diagnosis time point can be advanced to the reversible inflammation stage, interpretable evidence of patient-level decision and joint-level quantification is provided, the engineering feasibility of small samples and multi-center generalization is considered, and the method has high clinical transformation potential.

The invention discloses a method and a device for calculating an acetabular cup bone fitting rate, computer equipment and a storage medium. The method for calculating the acetabular cup bone fitting rate comprises the following steps: acquiring a pelvis model and an acetabular cup model; extracting an effective bone binding surface of the acetabular cup model; performing Boolean operation on the effective bone binding surface and the pelvis model to obtain an intersection set and a difference set of the effective bone binding surface relative to the pelvis model; and based on the intersection and the difference set, calculating to obtain the bone fitting rate of the effective bone fitting surface relative to the pelvis model. According to the method for calculating the joint rate of the acetabular cup bone, an objective, accurate and efficient method is provided for evaluation of the joint rate of the acetabular cup bone through geometric model reconstruction, effective bone joint surface extraction, Boolean operation and quantitative calculation, quantitative calculation of the joint rate of the acetabular cup bone is achieved, and the joint rate of the acetabular cup bone is evaluated. The problems that in a traditional method, doctor experience is relied on, and subjective judgment accuracy is insufficient are solved, and scientificity and accuracy of operation planning are remarkably improved.

Bone and joint surface reconstruction methods are disclosed for the therapeutic amelioration of joint defects caused by various conditions, injuries, and diseases to help eliminate or reduce pain and return the joint to its proper bio-mechanical function without the need to replace fully or partially the anatomical joint. The joint may specifically include mammalian joints such as the femorotibial joint, for example. The methods disclosed herein leverage the significant role the subchondral bone plays in the health status of the afflicted joint.

The utility model discloses an adjustable hip and knee joint rehabilitation device which comprises a base, two fixing seats are symmetrically fixed on the base, a seat plate is fixed between the two fixing seats, two first rotating shafts are symmetrically arranged on the base in a rotating mode, and the other ends of the first rotating shafts are connected to the bottom of the seat plate in a rotating mode. An extension plate is fixed to the first rotating shaft, a column is fixed to the extension plate, and a telescopic assembly is arranged at the top end of the column; the telescopic assembly comprises a positioning plate fixed to the top end of the column body, a telescopic plate is slidably arranged in the positioning plate, a circular ring is fixed to the other side of the telescopic plate, and an adjusting mechanism is arranged in the circular ring. The rehabilitation training device can be adjusted according to the length of the legs of a user, rehabilitation training of the user is facilitated, muscle of the waist and the legs of a patient is helped to be exercised, bone joint degeneration and muscle atrophy are prevented, meanwhile, abduction and adduction rehabilitation exercise can be conducted on the hip and knee joints of the user, and practicability is high.

The utility model discloses a bone joint surgical nursing support which comprises a support body, a plurality of control assemblies are connected to one side wall of the support body in a threaded mode, a massage assembly is arranged in each control assembly and comprises a sliding column and a massage plate, the sliding column is connected to one side wall of the massage plate in a threaded mode, and the massage plate is connected with the sliding column. The sliding column and the massage plate are hollow and are communicated with each other, a plurality of groups of arc-shaped grooves are formed in the inner wall of the fixing support, first threaded holes are formed in the positions, located on one side wall of each group of arc-shaped grooves, of the fixing support, and first external threads matched with the first threaded holes are integrally formed at one end of the fixing ring. According to the bone joint surgical nursing support, the detachable massage assembly is additionally arranged on the portion, with the most muscles, of the support, and meanwhile the detachable medicine spraying assembly is additionally arranged in the massage assembly, so that a patient can complete massage on the muscles and medicine spraying on the skin without detaching the nursing support.

A method for measuring a relative movement between bones and a method for acquiring a joint rotation axis of bones are provided, which can effectively improve rotational stability of a prosthesis of knee arthroplasty, thereby improving surgical outcomes. A population average bone joint most stable axis (a-MSA) is acquired through the method, so that the design of a joint prosthesis can be improved and a reference of a population average position can be provided for intraoperative placement of a prosthesis. An individual bone joint MSA (i-MSA) of a patient is acquired through the method before surgery, so that individual position information can be provided for intraoperative placement of a prosthesis, thereby further improving rotational stability of a surgical prosthesis.

Disclosed are a metal inner core, a placeholder and a preparation method for a hip joint bone cement placeholder. By designing the metal inner core including a frame body and a supporting portion inside the hip joint bone cement placeholder, the strength of the placeholder is enhanced; due to the fact that the metal inner core is hollow, the antibiotic bone cement can fill the inner portion of the metal inner core, the content of antibiotics in the placeholder cannot be affected, and infection is effectively controlled; the hollowed-out structure endows the placeholder with lighter weight and stronger structural strength, and meanwhile, the material cost is effectively reduced; and according to the preparation method of the hip joint bone cement placeholder, the size design of the placeholder and the metal inner core is carried out, so that the joint matching degree between the placeholder and the patient is high.

The invention provides a bone setting assembly. The bone setting assembly comprises a tibia connecting piece; a talus connector; the angle adjusting piece is connected between the tibia connecting piece and the talus connecting piece, the angle adjusting piece comprises a swinging block, the swinging block is connected to one of the tibia connecting piece and the talus connecting piece, the swinging block is arranged on the other one of the tibia connecting piece and the talus connecting piece in a swinging mode, and a plurality of locking grooves are formed in the swinging block; the locking piece is provided with a locking position and an unlocking position; when the locking piece is located at the locking position, the locking piece is matched with one of the multiple locking grooves in an inserted mode so that the angle between the tibia connecting piece and the talus connecting piece can be fixed. When the locking piece is located at the unlocking position, the locking piece is separated from all the locking grooves, so that the angle between the tibia connecting piece and the talus connecting piece is adjustable. According to the technical scheme, the problems that in the prior art, an ankle joint bone fracture plate is poor in fitting degree and implantation stability are effectively solved.

A spacer for separating bones of a joint, the spacer includes a first endplate configured to engage a first bone of the joint; a second endplate configured to engage a second bone of the joint; tissue engaging projections, wherein the tissue engaging projections are moveable from a retracted position to a deployed position; and an actuation subassembly that extends between the first endplate and the second endplate, wherein the actuation subassembly comprise a drive nut, a drive screw coupled to the drive nut, and a cam frame coupled to the drive screw, wherein the cam frame is disposed between the first endplate and the second endplate to engage the tissue engaging projections.

The invention relates to the technical field of medical equipment, in particular to a knee osteoarthritis auxiliary detection device and method.The knee osteoarthritis auxiliary detection device comprises a wearable main body, a monitoring assembly used for monitoring state information of legs of a patient in real time is installed on the wearable main body, and the wearable main body comprises a first fixing part and a second fixing part; a connecting assembly is installed between the first fixing piece and the second fixing piece, the monitoring assembly is installed on the inner side walls of the first fixing piece and the second fixing piece, reminding assemblies are installed on the first fixing piece and the second fixing piece, and the monitoring assembly is in signal connection with a controller. The controller is used for adjusting the connecting assembly, the first fixing piece and the second fixing piece according to state information monitored by the monitoring assembly in real time. The monitoring assembly comprises an angle sensor, an acceleration sensor and a tilt angle sensor. The knee joint state of the patient is monitored in real time, the auxiliary force is intelligently adjusted, and timely reminding is provided.

Disclosed is a method for preferentially removing cartilage from a bone in a joint that is effective at removing the cartilage while minimizing any removal of the cortical bone.

The utility model relates to the technical field of medical instruments, in particular to an atlantoaxial bone grafting device. The atlantoaxial bone grafting device comprises a bone grafting funnel and a bone grafting device, wherein the bone grafting funnel comprises a hollow pipe part and a funnel part arranged at the top end of the hollow pipe part; the funnel pushing piece comprises a first pushing rod and a pushing part arranged at the top end of the first pushing rod; wherein the first pushing rod can be arranged in the hollow pipe part, and when the pushing part is limited above the opening in the top end of the hollow pipe part, the bottom end of the first pushing rod extends out of the opening in the bottom end of the hollow pipe part; the bottom end of the first pushing rod is a flat and blunt end. According to the technical scheme, the surgical instrument for bone grafting of the atlantoaxial lateral mass joint is provided, bone grafting is accurately and effectively completed through one-time operation of the bone grafting funnel, the surgical operation difficulty is remarkably reduced, the bleeding risk is reduced, the surgical time is shortened, and the postoperative fusion rate is increased.

The utility model belongs to the technical field of endoscopes, and particularly relates to a super-long bent angle structure of an endoscope. Comprising a snake bone formed by sequentially hinging a plurality of snake bone joints; the camera end part is arranged at the far end of the snake bone; the insertion tube is arranged at the near end of the snake bone; the traction line is circumferentially arranged in the snake bone and penetrates through a traction hole in the inner wall of the snake bone, one end of the traction line is connected with one snake bone joint located at the far end, and the other end of the traction line is connected with a traction driving mechanism; wherein each pull wire is formed by connecting two steel wire ropes with different rigidities end to end. According to the snake bone joint, the two steel wire ropes with different rigidities are connected end to end to form the pull wire, and the rigidity can be reduced by selecting the thinner steel wire rope, so that the bending angle of the snake bone joint is increased.

The present invention discloses an integrated bone and cartilage scaffold with a directional pore structure and a preparation method thereof, which belongs to the fields of tissue engineering, biomedicine and biomanufacturing technology. The method simulates the natural material and structure of bone cartilage, uses the principle of directional crystallization to prepare a bone and cartilage scaffold with a directional structure, and uses a low-temperature deposition manufacturing process based on rapid prototyping technology to prepare a horizontally oriented cartilage layer scaffold and a vertically oriented subchondral bone layer scaffold. Between the cartilage layer and the subchondral bone layer, methacrylated gelatin capable of UV cross-linking is combined with other materials with chemical grafting and bonding effects as a transition layer, thereby preparing a tissue engineering bone and cartilage integrated composite scaffold. The present invention is aimed at the treatment of articular bone and cartilage defects, and uses a bioactive material to manufacture a bone and cartilage composite scaffold with a directional pore structure. It can promote the coordinated repair of bone and cartilage tissue according to the characteristics of different functional areas of bone and cartilage, thereby improving the repair effect of bone and cartilage defects.

The utility model relates to the technical field of medical supplies, and discloses a snake bone structure and an endoscope with the snake bone structure, the snake bone structure comprises a tail end joint and a plurality of snake bone joints which are hinged in sequence from top to bottom, a front notch is formed between the front sides of every two vertically adjacent snake bone joints, a rear notch is formed between the rear sides of every two vertically adjacent snake bone joints, and the tail end joint is connected with the tail end joint. The two vertically adjacent snake joints can swing in the left-right axial direction; the tail end joint is annular, the upper end of the tail end joint is hinged to the lowest snake joint, a big-end-down stepped hole is formed in the tail end joint, the lower end of the stepped hole is used for installation of an insertion pipe, and a soldering tin hole communicated with the lower end of the stepped hole is formed in the lower end of the tail end joint. The tail end joint and the insertion pipe can be directly welded together through soldering tin, and redundant soldering tin between the snake joint and the insertion pipe can be filled in the soldering tin hole, so that the connection firmness between the snake joint and the insertion pipe is ensured, and the risk of falling of the insertion pipe is reduced.

The utility model discloses a rheumatism immune arthralgia relieving device which comprises binding assemblies arranged up and down and supporting assemblies arranged in a bilateral symmetry mode. The upper end and the lower end of the supporting assembly are detachably connected with the corresponding binding assemblies respectively. The binding assembly comprises a left side plate and a right side plate, the left side plate and the right side plate are arc-shaped and have opposite concave surfaces, and a connecting structure is arranged between the left side plate and the right side plate; the supporting assembly sequentially comprises a hollow rod, an adjusting rod and an extension rod from top to bottom, a sliding connection structure is arranged between the hollow rod and the adjusting rod, and the adjusting rod and the extension rod are fixedly connected; installation structures are arranged between the hollow rod and the corresponding binding assembly and between the extension rod and the corresponding binding assembly. Hard fixation of the upper portion and the lower portion of the joint is achieved through the two arc-shaped plates, supporting performance is good, bone and meat at the joint are not prone to being dragged by slight movement, and pain during disease attack is relieved.

The utility model discloses an endoscope snake bone structure and a snake bone chain, the snake bone structure comprises snake bone joints, the two end faces of each snake bone joint are respectively provided with a son rotating part and a mother rotating part, the center lines of the end faces of the snake bone joints, the son rotating parts and the mother rotating parts incline towards the same direction, and the son rotating parts and the mother rotating parts of the adjacent snake bone joints are connected in a sleeved mode to form rotating joints. By arranging the inclined end faces and the inclined connecting structures, when the front-end snake joint rotates relative to the rear-end snake joint, the overlapping length of the connecting structures between the front-end snake joint and the rear-end snake joint is increased, the snake bone stability is improved, the snake bone reliability is improved, and the occupied internal space of the snake bone chain is reduced.

The invention discloses an injectable hydrogel pharmaceutical composition for an articular cavity as well as a preparation method and application of the injectable hydrogel pharmaceutical composition. The hydrogel pharmaceutical composition comprises gel particles and a medicine loaded in the gel particles, the gel particles are formed by cross-linking hyaluronic acid or salt thereof and silk fibroin through a cross-linking agent; the medicine comprises an anti-inflammatory drug and / or a growth factor. The preparation method is simple, good in safety and beneficial to industrial production. The uniform porous structure of the hydrogel is beneficial to adhesion and growth of bone cells, meanwhile, the double-load hydrogel loaded with the anti-inflammatory drug and the growth factor has good viscoelasticity and injectability and has the effects of synergistically resisting inflammation and promoting cartilage repair, and bone joint related diseases are treated in a bone joint intracavity injection mode; the drug residence time can be prolonged, and the bioavailability is improved.

The utility model provides a reference frame anti-rotation assembly for a spine, which relates to the technical field of medical instruments and comprises a main body, at least two limiting holes arranged along a straight line are formed in the surface of the main body, and the limiting holes penetrate through the main body and are communicated with a movable cavity; the kirschner wire penetrates through the limiting hole; the movable block is provided with a limiting structure which drives the movable block to slide along the movable cavity. When the movable block slides in the movable cavity, one end face of the movable block gradually gets close to the limiting hole and tends to coincide with the limiting hole. When the movable block and the limiting hole partially coincide, the kirschner wire abuts against the movable block, and the problems that the spine is composed of a plurality of joints, the joints can move mutually, the arrangement stability of the reference frame is affected, errors are generated, and meanwhile when a navigation system is used for the spine, the reference frame needs to be placed over the spine of a person, and the operation is inconvenient are solved. Due to the fact that the distance between the multiple joints of the spine is small, the operation area is easily shielded by arranging a reference frame, and the operation view field is affected.

The utility model discloses a snake bone joint, a flexible joint assembly, a surgical operation arm and a surgical robot. The problem that uncertain dislocation sliding occurs between snake bone components when the snake bone joint is bent can be solved. Each snake bone joint comprises two snake bone components, a supporting structure and at least two traction soft ropes, each snake bone component can rotate based on a respective pivot, the supporting structure is arranged between the two snake bone components, the two pivots in the same snake bone joint are parallel, and the distance between the two pivots is constant; the traction soft ropes are connected between the two snake bone components in a pre-tightening state, and the projections of at least one pair of traction soft ropes in the extension direction of the pivot are in a crossed symmetrical state; each snake bone component comprises a limiting cambered surface used for tensioning the corresponding traction soft rope, the axis of each limiting cambered surface is parallel to or coincides with the pivot, the radiuses of the limiting cambered surfaces tightly attached to the same pair of traction soft ropes are equal, and the starting ends of the limiting cambered surfaces are fixed to the ends of the traction soft ropes. Therefore, the snake bone joint has the advantage of improving the bending precision and load deformation resistance of the snake bone joint.

The invention relates to the technical field of medical image reconstruction, and discloses a bone joint three-dimensional reconstruction method and system based on deep learning. The method comprises the steps that a bone joint tomography image set is input, and multi-scale density slices and edge contour information are analyzed; deducing the two types of information space structures, and establishing an initial space field containing a bone tissue main body frame and a joint lacuna form; separating articular surface structure details and bone surface texture veins from the initial field; generating a network by using the three-dimensional structure which is obtained through separation and input and is trained to obtain a grid body with anatomical topological connection; and performing curved surface iterative smoothing based on biomechanical characteristics on the grid body, and outputting a final bone joint three-dimensional model.

The invention relates to the technical field of bone implant testing, and discloses a bone implant anti-fatigue testing device which comprises a closed storage mechanism, a quasi-bending energy supply mechanism installed on the closed storage mechanism and a quasi-bending pressure bearing mechanism installed in the closed storage mechanism. The fatigue detection mechanism is mounted between the quasi-bending energy supply mechanism and the quasi-bending pressure-bearing mechanism; the bone implantation assembly is assembled on the fatigue detection mechanism; and the closed storage mechanism is used for providing permeation of the simulation medium for the fatigue detection mechanism. The two to-be-detected bone plates are respectively installed on the two corresponding assembly blocks, and a sealed storage environment is provided for the fatigue detection mechanism by means of the main shell and the auxiliary shell; the fatigue test can be carried out on the two bone plates by matching the quasi-bending function mechanism driven by the motor with the quasi-bending pressure-bearing mechanism so as to simulate the human body environment where the bone plate assembled on the bone joint is located for testing, and the authenticity of the anti-fatigue test of the selected bone plate can be enhanced.

The invention discloses a bone tissue thickness determination method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a to-be-segmented craniofacial CBCT image, and segmenting a target bone tissue from the craniofacial CBCT image; smoothing the region where the target bone tissue is located, and if the target bone tissue has a cavity region, rendering and filling the cavity region of the target bone tissue as required; and measuring or calculating the thickness of a target position of the target bone tissue area, or obtaining a thickness chromatogram of the target bone tissue, so as to determine the thickness of the target bone tissue. According to the method, the target bone tissue can be segmented, the thickness of the target bone tissue can be measured or calculated, related diseases can be further predicted or prevented according to the thickness information, a prevention scheme is provided for orthodontic bone windowing and bone cracking in stomatology, and calculation indexes are provided for bone joint diseases and bones in clinical medicine.

The application discloses a kind of food relieving bone joint damage evaluation method, it is related to food efficacy evaluation technical field, for solving the problem of single dimension of existing evaluation method, unstable model leads to poor reliability of conclusion.The application builds composite modeling and multi-modal analysis mechanism, first, a stable animal model is established by using chemical injury combined with forced exercise training, a two-stage increasing dosing regimen is set, and behavior dynamic trend data and histology, imaging multi-modal results are collected synchronously.Then, based on the weight assigned to osteoarthritis stage, a weighted composite score is generated, and a perturbation sensitivity index is calculated, a multi-index collaborative influence map is constructed, a key evaluation node is located, a graded evaluation conclusion is generated based on the food action characteristics and efficacy determination threshold, and false positives caused by single index fluctuations are avoided.Finally, a full-cycle closed-loop evaluation process is formed, which improves the scientificity, reproducibility and self-adaptive ability of efficacy determination in complex biological systems.