55 results about "Radius bone" patented technology

The present disclosure relates to a prosthesis (400) configured for implantation in a carpometacarpal joint in the wrist, the prosthesis comprising a first and a second implant part member (405a,b) configured to be screwed into a radius and metacarpal bone respectively. Each implant part member (405a,b) comprising an articulation member (420a,b) configured to be received in the bone fixation member (410a,b) in a releasable manner. The articulation members (420a,b) comprise orientation pins (423) configured to be inserted into bore sections of the bone fixation members 410a,b. When seated in the bore sections, the first portions of the articulation members (420a,b) with the orientation pins (423) are substantially centered along the central axes of the bone fixation members (410a,b), thereby forming common central axes extending through the bone fixation members (410a,b) and the articulation members (420a,b). The radius articulation member (420a) comprises a replacement articular surface configured for articulation with a replacement articular surface located on the metacarpal articulation member (420b). The radius replacement articular surface has (420a) a configuration that is asymmetric about the common central axis of the radius bone fixation (410a) and articulation members (420a). The bore sections have cross-section (419) extending perpendicularly to the central axis defining a first polygonal outline (429). The orientation pins (423) have cross-sections defining a second polygonal contour line, such that when the orientation pins (423) of the articulation members (420a,b) are seated in the bores of the bone fixation members (410a,b), rotation of the articulation members (420a,b) in relation to the bone fixation members (410a,b) is prevented.

Disclosed is a device for total wrist fusion that includes (a) a first section, which is preferably a plate, that is positioned under the skin on top of the forearm, wrist and potentially part of the hand and connected to one or more of the radius or carpal bones, (b) a second section, which is preferably in the shape of an awl and is received in the cannula of the third metacarpal bone. Optionally, an anti-rotational third section may be included, which can connect to the top of the third metacarpal bone.

To provide an arm correction wearing tool and arm correction wear which can support the supination movement of the arm and easily correct the twisting of the arm. [Solution] The arm corrective wearing device 10 comprises an arm covering part 11 that covers at least from the shoulder to the elbow on one side, and an arm belt 12 that is disposed on the arm covering part 11 and extends from the shoulder to the front, passing through the muscle belly of the biceps brachii muscle and around the inside of the arm, passing through the muscle belly of the triceps brachii muscle and around the outside of the arm from the humerus side of the olecranon, and then extending along the proximal part of the radius of the forearm. The arm belt 12 supports the supination movement of the arm and supports part of the forearm while imitating the tendon of the biceps brachii muscle.

The application relates to the technical fields of medical image processing and artificial intelligence, and provides a bone age evaluation method and system based on an AI model and a bone age instrument. The left wrist X-ray image of a subject detected in the bone age instrument is acquired, and the demographic information of the subject is recorded. The detected left wrist X-ray image is pretreated through gray standardization, noise filtering and a self-supervised learning model. The Vision Transformer is used to extract the distal radius epiphysis and metaphysis width ratio, the third metacarpal metaphysis length and the auxiliary ossification point maturity grading skeletal features, and the multi-modal data fusion is carried out with the demographic information. The multi-layer perception model is used to predict the fused multi-dimensional bone age related data, and a bone age evaluation report is output, so that the error in the bone age prediction of children and adolescents is effectively reduced, and the detection efficiency is improved.

The invention provides a wrist closed-loop peripheral nerve electrical stimulation method and system, and relates to the technical field of nerve regulation and wearable medical instruments.The method comprises the steps that physiological signals and wearing state information of the radial styloid process, the ulna styloid process and the wrist transverse grain midpoint of the wrist are obtained, and the reference range and the dynamic calibration boundary of stimulation parameters are obtained; based on the reference range and the dynamic calibration boundary, determining a structural relationship according to the position data of the radial styloid process, the ulna styloid process and the wrist cross grain midpoint of the wrist, and performing regional characteristic analysis on the structural relationship to obtain an analysis result; and calculating geometric characteristics in the regional characteristic analysis result to obtain a geometric moment quantification result of the region. According to the invention, an individual parameter setting, closed-loop online updating and long-term maintainable engineering system is realized.

The application discloses a multifunctional electronic assisting device and relates to the technical field of electronic assisting devices, which comprises a glove, a ulna connecting sleeve connected to one end of the glove, a radius connecting sleeve connected to one end of the ulna connecting sleeve, an elbow joint protective cover fixedly connected to one end of the radius connecting sleeve, and a humerus connecting sleeve fixedly connected to one end of the elbow joint protective cover. When the driving rod slides in the spiral groove, the transmission bar can be lowered, and the piston rod can be lowered synchronously in the process, so that the air in the piston cylinder is filled into the inside of the inflatable cotton through the inflation pipe, the elbow is assisted in the process of rapid expansion of the inflatable cotton, and the elbow is protected, so that the elbow is prevented from being injured due to the elbow being supported on the ground due to the instinctive reaction when a person falls down during the use of the device. The elbow joint protective cover is thickened in the process of expansion of the inflatable cotton, so as to play a buffering role on the elbow.

A wristband (10) for covering a wrist accessory (4) having an accessory band (6) adapted to extend around the palmar side (21), and the radial and ulnar zones (31,32), of a wrist (2) of a wearer; and an accessory feature (8) adapted to rest on the dorsal side (44) of the wrist (2). The wristband (10) comprises a rear section (20) including a volar portion (22) that is adapted to laterally and circumferentially cover the accessory band (6) outwardly of the accessory band (6) on the wearer's wrist (2). The wristband (10) also includes side radial and ulnar portions (32,34) and a front section (40). The front section (40) includes a laterally displaceable dorsal portion (42) adapted to move from a cover position (Fig. 4) in which it covers the accessory feature (8), and a displaced position (Fig. 3) in which the accessory feature (8) is uncovered.

The application discloses a postoperative adjustable nursing support device for children, and relates to the technical field of medical devices.The size arm supporting and clamping mechanism comprises a small arm supporting plate and a circular arc supporting plate, two supporting plates one are arranged on the front and back sides of the left end of the small arm supporting plate, one side of the two supporting plates one away from each other is fixedly connected with one end of two longitudinal adjusting shafts, two supporting plates two are arranged on the front and back sides of the bottom of the circular arc supporting plate, the two supporting plates two are rotationally connected with corresponding adjusting shafts, the top of the circular arc supporting plate is fixedly connected with the bottom of a large arm binding plate, and the outer side of the large arm binding plate is provided with a large arm binding assembly; the postoperative adjustable nursing support device for children further comprises a size arm angle adjusting mechanism, a ulna and radius state limiting mechanism and a ulna and radius clamping mechanism, the relative position of the ulna and the radius in the small arm can be limited in the early postoperative period, and the elbow protection mechanism can prevent the elbow joint bending point from being bumped.

The utility model belongs to the technical field of medical apparatus and instruments and provides a radial artery intervention operation compression hemostat, including support plate, bandage, compression hemostat mechanism, radial bone clamping plate and ulna clamping plate, radial bone clamping plate top end rotation connection is in support plate left end, and ulna clamping plate top end sliding is established in support plate right -hand side, and the bottom surface of support plate right -hand side is provided with the vertical board, and the vertical board is provided with the screw rod in screw connection, and radial bone clamping plate bottom end and ulna clamping plate bottom end all are set up strip -shaped bushing, and the right end of bandage is fixed in ulna clamping plate bottom end, and its left end bottom surface is provided with magic tape hair surface and magic tape hook surface at intervals. The compression hemostat can use radial bone clamping plate and ulna clamping plate to clamp radial bone and ulna from both sides of wrist to position, and bandage does not contact with the back of wrist, so that the bandage does not cause compression to the back of wrist vein, and the compression hemostat is not easy to rotate around the wrist axis, and the installation structure is relatively stable, and the probability of displacement of compression hemostat mechanism and puncture point compression failure can be reduced.

The invention provides an assembled radial head prosthesis, and belongs to the technical field of medical instruments. The invention provides an assembled radial head prosthesis which comprises a radial head, a radial handle and a plurality of sets of filling parts, a joint nest is formed in the upper end of the radial head, and a mounting groove is formed in the lower end of the radial head; a mounting head is arranged at the upper end of the radial handle and is arranged in the mounting groove; the multiple sets of filling parts are sequentially arranged in a stacked mode and all arranged on the outer side of the radial handle in a sleeving mode, the inner side walls of the filling parts are matched with the outer side wall of the radial handle in shape, and the filling part at the lowermost end is located above the osteotomy bone surface of the radius of the patient. According to the assembled radial head prosthesis, the number of the filling pieces is selected according to the actual situation, the filling pieces are arranged between the radial head and the osteotomy bone surface of a patient, the osteotomy bone surface is supported, the position of the radial head is limited, the stability of the prosthesis after implantation is improved, and the risks that the prosthesis is loosened and fractures occur around the prosthesis are reduced.

The utility model relates to a kind of distal radius fracture dorsal bone block fixing system, including palmar side steel plate, several palmar side fixed holes are opened on the palmar side steel plate, still include the dorsal steel plate corresponding with the position of fragmented dorsal bone block, at least one dorsal fixed hole is opened on the dorsal steel plate, the dorsal fixed hole is counterbore, the palmar side steel plate is integrally connected with dorsal steel plate by passing through the internal thread bolt of palmar side fixed hole and dorsal fixed hole and the fixed bolt matched with the internal thread bolt. The utility model can be used for treating distal radius dorsal fracture, to improve the holding force of isolated dorsal small steel plate on bone block by palmar side steel plate, effectively fixed fragmented dorsal bone block;Palmar side dorsal bidirectional locking can be through the degree of tightening to bone block pressurization, and also can avoid the same side arrangement multiple screws to cause bone block comminution.

The utility model discloses a short and wide type distal radius steel plate which comprises a steel plate body, a through hole is formed in the middle of the steel plate body, a plurality of locking holes are formed in the steel plate body from top to bottom, and the locking holes are formed around the through hole; the outer contour of the steel plate body is in a trapezoid shape, and the width of the upper end of the steel plate body is larger than that of the lower end of the steel plate body. Through the application of the utility model, the short and wide distal radius steel plate is provided, the smaller size of the steel plate is more favorable for implementing the operation scheme of transverse incision on the palm side of the wrist, and meanwhile, the accuracy of placing the steel plate is also improved, so that the operation efficiency of medical personnel is further improved; in addition, the incision needed by using the anterior rotating muscle fixing device is small, meanwhile, the integrity of the anterior rotating muscle of the patient is kept, and the postoperative rehabilitation time of the patient is greatly shortened.

The invention belongs to the technical field of medical teaching aids, and discloses a teaching aid for simulating distal radius fracture manual reduction, which comprises a first fixing block, a second fixing block, a fixing rod and a simulated radius, an adjusting assembly and a moving rod are arranged in the fixing rod in a penetrating manner and are connected through an extension spring, and a connecting rod at the tail end of the moving rod is hinged to a rotating rod. The rotating rod is arranged in the first fixing block in a penetrating mode, the elasticity adjusting set of the rotating rod comprises an adjusting rod, an elastic rope and a U-shaped block, the tail end of the adjusting rod is connected with the elastic rope, and the elastic rope penetrates out of the rotating rod and then is connected with the connecting rod; an unlocking assembly is arranged in the first fixing block in a penetrating mode, and the simulated broken bone is arranged on the first fixing block. By rotating the rotating rod and the connecting rod, the position of the simulated broken bone relative to the simulated radius is changed, and different clinical fracture conditions are reproduced; by pulling the adjusting rod, pulling force provided by the elastic rope is changed, different force feedbacks are provided, more real conditions are simulated, and the training effect is better.

The utility model discloses a buckling type distal radius fracture splint device, and belongs to the technical field of orthopedic fixing devices. The first soft plate is arranged on the palm side at the far end of the radius in an attached mode, and the whole first soft plate extends out of the wrist from the arm; the first clamping plate is arranged on the outer side of the first soft plate, the whole first clamping plate extends from the arm to exceed the wrist, the part, exceeding the wrist, of the first clamping plate is bent upwards, and the tail end of the first clamping plate abuts against the palm side so as to provide downward compression force for the palm side; the second clamping plate is arranged on the radial side of the distal radius in an attached mode, the second clamping plate integrally extends out of the wrist from the arm, and the tail end of the second clamping plate abuts against the radial side of the hand, so that acting force towards the ulna side is generated; and the fixing piece is used for fastening and positioning the soft plate and the clamping plate. According to the buckling type distal radius fracture splint device, related complications such as soft tissue scars caused by gypsum wrapping and clamping of a fracture fixing part can be reduced.

The invention relates to the technical field of ulna and radius reduction, and discloses an ulna and radius reduction device for bone surgery and a using method thereof.The ulna and radius reduction device comprises a base, a support is fixedly connected to the side wall of the base, two sliding blocks are slidably connected to the top of the base, and bandages are fixedly connected to the tops of the sliding blocks. A medical worker exerts pulling force on the palm position, the palm and the top end of the front arm are pulled to drive a bandage to move, a sliding block moves synchronously, when the sliding block moves, a sliding toothed bar is driven to move, a gear is driven to rotate while the sliding toothed bar moves, and when the gear rotates, the movable toothed bar moves along with the sliding toothed bar; by means of the structure, the binding band at the tail end of the forearm and the sliding block move, the same force can be applied to the tail end of the arm while pulling force is applied to the front end of the arm of a patient, and accurate alignment of the fracture end can be effectively guaranteed by maintaining the force which is constant in size and horizontal in direction.

1. The name of the design product: radius ultrasonic bone density forearm fixator. 2. The use of the design product: radius ultrasonic bone density forearm fixator for detecting radius ultrasonic bone density of human. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The application discloses a function exercise device for distal radius fracture and relates to the technical field of orthopedic rehabilitation medical instruments, which comprises arc-shaped symmetrical circular arc plates, two of which are rotationally connected through a hinge in the middle, a function exercise assembly fixedly installed at one end of the two circular arc plates away from the wrist, and two fixed boxes included in the function exercise assembly. The function exercise device for distal radius fracture can realize rehabilitation training through the meshing transmission structure of the worm gear and the helical gear, can drive the finger joints to make soft and uniform flexion and extension movement through the linkage of the bilateral air bags, can realize the synchronous and integrated exercise of the wrist joint and the finger joints, can effectively accelerate local blood circulation, can reduce soft tissue swelling, can prevent muscle atrophy and joint stiffness, can reduce the risk of osteoporosis, can significantly shorten the fracture healing period, and can efficiently promote the comprehensive recovery of the motion function of the affected limb.

The utility model belongs to the technical field of medical instruments, and particularly relates to a novel splint for distal radius fracture, which comprises two first splints acting on the left side and the right side of a forearm respectively, two second splints acting on the upper side and the lower side of the forearm respectively and an electronic display screen. The exteriors of the two first clamping plates and the exteriors of the two second clamping plates are jointly and fixedly connected with three fastening structures distributed front and back, and the electronic display screen is fixedly connected with the exterior of the second clamping plate on the upper portion. By arranging the two first clamping plates and the two second clamping plates, the two first clamping plates and the two second clamping plates are distributed in a staggered and surrounding mode, and the three fastening structures are jointly arranged outside the first clamping plates and the two second clamping plates, when the device is used, according to the swelling condition of the forearm of a patient in the using process, the forearm of the patient can be fixed; the tightness among the four clamping plates is adjusted through the three fastening structures, and the situation that when a patient uses the device, due to the fact that the forearm swells and fades away, the device is loosened, and external fixation fails is avoided.

The utility model discloses a distal radius fracture external fixation brace capable of maintaining traction force, which comprises a forearm module and a palm module, a connecting module is arranged between the forearm module and the palm module, and the forearm module is movably connected with the palm module. And the connecting module comprises an arc-shaped connecting piece, a flexion and extension locking mechanism, a movable plate group and a traction part. By means of movable connection and a fine adjustment mechanism, the wrist movement range and the traction force can be accurately controlled, the treatment adaptability is improved through the adjustable traction force and the adjustable movement range, and the protector can be adjusted according to the specific recovery conditions and requirements of a patient. Not only the comfort of the patient is improved, but also early rehabilitation activities are facilitated by allowing controllable wrist flexion and extension rotational motion. The movement range of the wrist and the applied traction force can be flexibly adjusted according to the recovery stage and demand of a patient, the stability of the interruption end in the fracture reduction process is ensured, and correct healing of the fracture is facilitated.

A high-purity magnesium skull repair mesh and its preparation method are disclosed, belonging to the field of biomedical materials. The repair mesh is made of high-purity magnesium with a purity of 99.95 wt%, and its surface roughness R... a,表面 The roughness R inside the pore is controlled within the range of 0.5~0.6 μm. a,孔 ≤ 0.8 μm. By precisely controlling the surface and internal roughness, a degradation rate of ≤0.2 mm / year was achieved for the repair mesh, a modulus ≥18 GPa after 12 weeks of implantation, and spontaneous disappearance of the degradation air bladder within 12 weeks, with a significant bone-promoting effect. The preparation method includes electrical discharge drilling, internal polishing, diamond wire slicing, and surface polishing. This invention solves the problems of excessively rapid degradation, poor morphological retention, and rapid decline in mechanical properties of existing magnesium-based cranial repair meshes, and is suitable for repairing bone defects in the skull, jawbone, radius, femur, and other bones requiring long-term mechanical support.

The application discloses an automatic elbow extension and flexion teaching device based on bone joint and muscle simulation, and relates to the technical field of elbow extension and flexion teaching.The device comprises a skeleton simulation part, a muscle simulation part, a base, a support rod, a top plate, a fixing mechanism, a driving mechanism, an electronic universal watch and a processing module.The skeleton simulation part, the muscle simulation part, the fixing mechanism and the driving mechanism are all assembled on the support frame formed by the support rod and the top plate.In the application, the flexible support frame is integrally designed with the humerus simulation part and the ulna and radius simulation part, and the movable elbow joint is formed by the fish line penetrating through the through hole, so that the human elbow joint anatomical structure and the 0-150-degree physiological activity range are accurately restored.The muscle simulation part is filled according to the human muscle shape, and is accurately attached to the first magic tape and the second magic tape, so that the muscle and the skeleton are quickly assembled, and the user can directly observe the linkage relationship between the skeleton and the muscle.

To provide a plate that can be quickly and reliably applied to the distal end of the radius. [Solution] The plate 10, for application to radial fractures, has a main body 20 and a head 50 integrally connected to the main body 20. The head 50 has a concave recess and a locking portion 56 for engaging with the distal end of the radius. When the main body 20 is placed against the radius, the recess accommodates the convex portion of the radius or bone fragments separated from the radius, and the locking portion 56 engages with the distal end.

The application discloses a wrist joint prosthesis, relates to the technical field of medical devices, and comprises a carpal bone connecting assembly, a radius connecting assembly and a locking structure; the carpal bone connecting assembly comprises a carpal bone bracket, a carpal bone pad in sleeve joint with the carpal bone bracket, a carpal bone positioning column in separable plug joint with the carpal bone bracket and two bone screws for being connected with carpal bones, the screw caps of the bone screws are in sliding joint with straight through holes on the carpal bone bracket, and the carpal bone bracket is in separable connection with the bone screws through the locking structure; the radius connecting assembly comprises a radius bracket and a radius extension handle, the radius bracket is in separable connection with the radius extension handle through a clamping structure, and the radius bracket is provided with a circular arc surface matched with the carpal bone pad. The application is convenient and reliable to use, and is convenient for local structure adjustment or replacement in a later surgery process.

The invention discloses an adult (final) height prediction method. The method comprises the following steps: 1) respectively evaluating the bone maturity levels of the radius and the first metacarpal bone of a subject, and calculating the average value of the bone maturity levels; the method comprises the steps of (1) selecting a bone maturity grade average value, (2) evaluating the adolescent developmental stage of a subject, (3) finding the percentage (% FHA) of the height corresponding to the developmental stage to the lifelong height from a pre-established table according to the bone maturity grade average value and the adolescent developmental stage, and (4) predicting the adult (final) height = current height / (% FHA / 100) The method is simple and convenient to operate, short in time consumption, high in prediction accuracy and convenient for clinical popularization and application.

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 humeroradial joint or other joint of the elbow, wrist, or hand, 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 relates to a wrist joint and metacarpophalangeal joint combined prosthesis with a flexion and extension activity function, which belongs to the technical field of medical prostheses and is characterized in that a wrist joint prosthesis is connected with a radius, a metacarpophalangeal bone prosthesis is respectively connected with the wrist joint prosthesis and a plurality of hinge type finger joint prostheses, and each hinge type finger joint prosthesis is connected with a proximal phalanx; the wrist joint prosthesis has a rotating function, meanwhile, the wrist joint prosthesis is rotationally connected with the metacarpal bone prosthesis to achieve the flexion and extension function of the wrist-metacarpal joint, the hinge type finger joint prosthesis comprises two flexion and extension parts, and the two flexion and extension parts are rotationally connected to achieve the flexion and extension motion function of the finger joint. A plurality of suture holes are formed in the metacarpal bone prosthesis and used for being connected with tendons, so that the activity of rotation movement and flexion and extension movement of the combined prosthesis is guaranteed through the tendons.

A prosthesis (1) of an amputated limb for a pet is disclosed, wherein: it comprises a main body (2) extending longitudinally, which is hollow, which is made in a single piece and which is shaped to receive a stump (3) of an amputated limb (4); the main body (2), in turn, comprises: a first part (5) extending along a first axis (A1) and forming a tubular structure; a second part (6) extending along a second axis (A2) and having a first opening (7); it comprises an end (8) which is connected to the first part (5) and which comprises an external surface (9) arranged to contact the ground during the use of the prosthesis (1) of the limb. Furthermore: the prosthesis (1) of the limb comprises anchoring means (10) which are carried by the second part (6) and which are arranged to anchor the stump (3) of the amputated limb (4) and the main body (2) to each other; the first part (5) and the second part (6) are angularly arranged with respect to each other so that the second part (6) laterally embraces part of the radius and ulna bones of the anterior amputated limb (4) or part of the tibia and fibula bones of the posterior amputated limb (4), and the first part (5) receives the stump (3) of the amputated limb (4) during the use of the prosthesis (1) of the limb.

The utility model relates to a rotatable distal radius fracture fixing device, the rotatable distal radius fracture fixing device includes an arm fixing device, two adjusting devices and a palm fixing device, the arm fixing device is connected in the rear end of adjusting device, the palm fixing device is connected in the front end of adjusting device, the rotatable connection is arranged between the arm fixing device and the palm fixing device through the adjusting device, the arm fixing device is suitable for the fixation of a arm of patient, and the palm fixing device is suitable for the fixation of a palm of patient.

The application discloses a distal radius bone plate optimization method based on optimal fracture gap strain, and specifically comprises the following steps: constructing a finite element model of a distal radius fracture internal fixation system and performing analysis; taking the minimum weighted bone end displacement as a target function and taking volume as a constraint to construct a topology optimization model based on the weighted sum and variable density method, and updating iteration until a convergence criterion is met to obtain an optimal topology configuration; and evaluating whether the optimal topology configuration meets the optimal fracture gap strain; the application uses weighted optimization, which is more suitable for the stress condition of a wrist joint in actual life; the bone plate obtained through the weighted optimization meets the optimal fracture gap strain under the condition of meeting the rigidity when used, the best healing is pursued, and the life quality of patients is improved.