21 results about "Wrist bone" patented technology

The present invention relates to a sensomotoric hand therapy device comprising a flexible shell having a first leg portion configured to accommodate fingers of a hand of a patient, a second leg portion configured to accommodate a thumb of the patient and a U-shaped portion configured to accommodate a metacarpus of the patient. The device further comprises a first reinforced member connected to a distal end region of the first leg portion of the shell, a second reinforced member connected to a distal end region of the second leg portion of the shell and a third reinforced member connected to and reinforcing the U-shaped portion of the shell. Further, the device comprises a movement mechanism defining a course and resistance of movement of the first reinforced member and the second reinforced member relative to the third reinforced member; and to a respective hand therapy system and hand training method.

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.

The present invention provides a wrist joint prosthesis, comprising: a carpal prosthesis and a radial prosthesis; the carpal prosthesis having a first curved surface, the radial prosthesis having a second curved surface adapted to the shape of the first curved surface, the carpal prosthesis and the radial prosthesis being abutted against each other along a first direction via the first curved surface and the second curved surface; the carpal prosthesis being configured to be rotatable relative to the radial prosthesis about a second direction and a third direction perpendicular to the first direction, and one end of the carpal prosthesis for connection to the carpal bone being rotatable relative to one end of the radial prosthesis for connection to the radius about the first direction. With such a configuration, by configuring one end for connection to the carpal bone to be rotatable relative to one end of the radial prosthesis for connection to the radius about the first direction, the wrist joint prosthesis can realize the circumflex motion function of the radiocarpal joint, thereby improving the patient's wrist joint mobility and increasing patient satisfaction.

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.

The present application relates to the technical field of deep learning, solves the technical problem that the existing deep learning method often ignores the refinement of data preprocessing and the universality of training strategy when processing medical images, resulting in limited model generalization ability, and especially relates to a wrist joint bone quality classification method based on deep learning. First, a standardization preprocessing procedure is performed on the medical image, and then a two-stage hierarchical data enhancement mechanism is introduced to greatly improve the model performance. Then, the VGG16_bn model based on ImageNet pre-training is selected and fine-tuned as the core feature extractor, and the Focal Loss loss function is introduced in the model training process, so that it can accurately capture the key features of osteoporosis in the medical image. Finally, in the validation of the osteoporosis image classification task, the classification of the wrist joint shows an accuracy of up to 98%, which highlights its excellent performance and broad application prospect in clinical diagnosis.

The utility model provides a wrist bone injury nursing exercise device, which relates to the technical field of sports equipment, and comprises two mounting blocks, the opposite surfaces of the two mounting blocks are fixedly connected with a plurality of springs, the outer surface of one mounting block is fixedly connected with two supporting shells, and the outer surface of the other mounting block is fixedly connected with a plurality of connecting rods. The surfaces of the inner walls of the two supporting shells are rotationally connected with supporting rods through bearings. During use, the pull rings are held by two hands respectively, then force is applied to the two sides, one mounting block drives the two pieces of protective fabric to move, the protective fabric drives the supporting rod to rotate, the torsional spring compresses the stroke to absorb kinetic energy, the area of the protective fabric is stretched along with the stroke of the springs, the springs are shielded, and the springs are prevented from being broken; meanwhile, the protective fabric prevents the situation that the spring is attached to the surface of the body when stretched, the stroke of the spring is shortened when the spring is released, and the spring is clamped to the surface of the body, and the use experience is improved.

The utility model relates to a wrist fracture fixing device which comprises a front arc-shaped fixing frame and a rear arc-shaped fixing frame, a plurality of arc-shaped connecting holes are formed in the front arc-shaped fixing frame and the rear arc-shaped fixing frame in the arc-shaped direction, and two pulling and connecting rods are connected in the corresponding arc-shaped connecting holes in the front-back direction of the front arc-shaped fixing frame and the rear arc-shaped fixing frame in a penetrating mode to be in the state of pulling and fixing the front arc-shaped fixing frame and the rear arc-shaped fixing frame. The front shaft section of the front connecting seat forwards penetrates through an arc-shaped connecting hole of a front arc-shaped fixing frame and is spirally connected with a front locking nut in a screwed mode to be fixedly connected, a rear connector of the front connecting seat is hinged through a connector at the front end of a pull rod and a pin shaft perpendicular to the front-back direction, and the rear end of the pull rod penetrates through a rear arc-shaped fixing frame to be fixedly connected; a first kirschner wire for fixing the radius in a crimped and penetrating manner is arranged on the rear arc-shaped fixing frame through a rear nut assembly; the front arc-shaped fixing frame is connected with a supporting rod upwards supporting the carpal bone or the metacarpal bone in a penetrating mode through a supporting nut assembly. The device has the advantages that the metacarpal bone can be well supported, micro momentum is increased through fixing of the front and rear arc-shaped fixing frames, and the high-stability and high-quality healing and rehabilitation requirements are met.

The invention discloses a wrist bone injury rehabilitation training device, and relates to the technical field of rehabilitation training equipment. Comprising a hand fixing cylinder and an arm fixing cylinder. The hand fixing cylinder and the arm fixing cylinder are connected through a plurality of connecting rods; a driving mechanism for driving the connecting rod to do telescopic motion is arranged on the arm part fixing cylinder; and the connecting rod is used for driving the hand fixing cylinder to swing. The device adopts a wearable design, is small in size and light in weight, can be worn by a patient, realizes rehabilitation training anytime and anywhere, overcomes the defect of fixed-point fixation of an existing device, improves the flexibility and convenience of rehabilitation training, and further improves the rehabilitation compliance of the patient.

A finger joint reduction simulation training device includes forearm, carpal, metacarpal, proximal phalanx, and middle phalanx portions, and at least one biasing element. The carpal portion is attached to a distal end of the forearm portion. The metacarpal portion is connected to the carpal attachment. The proximal phalanx portion has a proximal end that is connected to the metacarpal portion and a distal end opposite to the proximal end. The distal end includes a dislocation guide surface with a depression formed therein. The middle phalanx portion is positioned adjacent the proximal phalanx portion and includes a proximal end with a terminal surface configured to shift relative to the dislocation guide surface and includes a projection configured to extend into the depression of the dislocation guide surface. The biasing element is configured to bias the terminal surface of the middle phalanx portion against the dislocation guide surface.

A protective glove for a human hand has a metacarpus portion comprising a palm side attached to an opposing dorsal side which together cover the metacarpals of the human hand, and four finger portions attached to the metacarpus portion, each finger portion having a bottom side and a top side which together surround one of the fingers of the human hand. A plurality of rigid pads are attached to the top side of at least one of the finger portions, wherein the rigid pads have end surfaces that abut each other, and are positioned so that the end surfaces are positioned over one of the phalangeal joints while being worn. When the finger portions are straightened, the rigid pads restrict any backward flexion. At least one rigid metacarpus pad is attached to the dorsal side, having a side edge positioned over the metacarpophalangeal joint and formed at an angle to the end surface of the adjacent rigid pads. The angle is between approximately 10-50 degrees, so that limited backward flexion is allowed.

A bone removal device configured to increase efficiency of total ankle surgery by enabling removal of resected portion of tibia from a patient is disclosed. In particular, the bone removal device may enable a resected portion of a bone, such as, but not limited to, a tibia, to be pulled from the bone. The bone removal device may be configured to be used in total ankle surgery on a tibia, in carpectomies on hand or wrists, and other surgeries in which assistance removing a resected portion of bone would be beneficial. The bone removal device may include one or more filaments to remove the resected tibia from the tibia. The bone removal device may include a bone removal device body supporting one or more arms which, in an open position, enable the bone removal device to pull the resected portion of bone from the bone.

The application provides a blood pressure detection triggering method and device and a wearable device, and relates to the technical field of terminals. The method can be based on the actual distribution of the ulnar styloid process, radial styloid process and carpal bone at the user's wrist in a normal position when the wearable device is worn, and the actual distribution of the ulnar styloid process, radial styloid process and carpal bone at the user's wrist in an abnormal position, determine whether the wearable device is worn in the normal position according to the signal value detected by the detection device (such as a sensor), and start the blood pressure detection / calibration function of the wearable device when the wearable device is worn in the normal position. Therefore, the blood pressure detection / calibration is started when the wearable device is worn in the normal position, so that the blood pressure detection is triggered accurately, and the accuracy of blood pressure measurement is improved.

The present application relates to the technical field of three-dimensional medical images, and provides a wrist joint ligament image processing and analysis method, device, equipment and storage medium, comprising: acquiring original magnetic resonance imaging (MRI) images of at least two different views of a wrist joint to be imaged; performing isotropic super-resolution reconstruction on the original MRI images of the at least two different views to obtain a target MRI image; performing segmentation on the target MRI image to obtain a target segmentation image labeled with a wrist bone image region and a triangular fibrocartilage complex (TFCC) image region; performing edge extraction on the target segmentation image to obtain a TFCC stop point range on the wrist bone, and acquiring a target quantitative index corresponding to the stop point range. The present application obtains a three-dimensional high-resolution image with coherent structure, real texture and high reliability through isotropic super-resolution reconstruction. In addition, image processing, edge extraction and other methods are comprehensively used to efficiently and accurately extract the stop point range.

The invention relates to the technical field of deep learning, solves the technical problem that when an existing deep learning method is used for processing a medical image, refinement of data preprocessing and universality of a training strategy are often ignored, so that the generalization ability of a model is limited, and particularly relates to a wrist joint bone classification method based on deep learning. Firstly, a standardized preprocessing process is performed on a medical image, and secondly, a two-stage hierarchical data enhancement mechanism is introduced to greatly improve the model performance. Then, a VGG16bn model based on ImageNet pre-training is selected and finely adjusted to serve as a core feature extractor, and a Focal Loss loss function is introduced in the model training process, so that key features of osteoporosis in a medical image can be accurately captured; finally, in the verification of an osteoporosis image classification task, the accuracy rate in the classification of wrist joints is as high as 98%, and excellent performance and wide application prospects in clinical diagnosis are manifested.

The invention discloses a method and system for evaluating the bone age of a human body through a three-dimensional ultrasonic image and a medium, and belongs to the technical field of medical image processing and three-dimensional reconstruction. Comprising the following steps: acquiring a three-dimensional ultrasonic image of a human wrist bone; segmenting a bone tissue region of the three-dimensional ultrasonic image to generate a binary mask; converting a pixel region corresponding to the wrist bone tissue in the binary mask into a discrete three-dimensional point cloud; acquiring global features based on the three-dimensional ultrasonic image; the three-dimensional point cloud generates an initial bone surface through Gaussian distribution; iteratively generating a globally continuous UDF field through a UDF predictor; determining each point on the bone surface based on the UDF field, and outputting a smooth bone surface grid model; evaluating block-by-block epiphysis on the bone surface grid model in a grading manner, and calculating the bone age; according to the method, the bone age of the human body can be accurately predicted by using the ultrasonic image.

The wrist joint prosthesis comprises a carpal bone holder and a radius prosthesis, one of the carpal bone holder and the radius prosthesis is provided with a wrist joint convex, and the other is provided with a wrist joint concave, the wrist joint convex and the wrist joint concave are matched to make the carpal bone holder and the radius prosthesis movably abut together; wherein, the side of the carpal bone holder, which is opposite to the radius prosthesis, has an abutting surface, the abutting surface is used to abut against a carpal bone side bone cutting surface, the abutting surface comprises a platform surface and a first slope surface and a second slope surface connected to opposite edges of the platform surface, the included angle A between the first slope surface and the platform surface ranges from 15° to 35°, and the included angle B between the second slope surface and the platform surface ranges from 25° to 45°. The wrist joint prosthesis, the overall shape of the abutting surface of the carpal bone holder is similar to the shape of the bone surface at the place where the carpal bone is used to install the carpal bone holder, so that when the carpal bone is cut to form a bone cutting surface which is adapted to the abutting surface, the bone cutting amount of the carpal bone can be reduced as much as possible.

1. Name of the product in this design: Wrist Bone Fixation Belt. 2. Purpose of this design: An auxiliary rehabilitation device for fixing wrist bones. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. The top and bottom contents are shown in 3D View 1 and 3D View 2; the top and bottom views are omitted. 6. Other situations requiring explanation: The hand in the view is a supporting element and is not part of the content for which protection is sought.

The application discloses a stress release nursing bracelet suitable for teenagers and an intervention system, relates to the technical field of wearable smart devices, and comprises an elastic watchband, the end face of which is provided with an arc-shaped light-transmitting panel, the outer end of which is provided with a flexible LED breathing light belt, the side end of which is provided with a micro loudspeaker, and the lower end of which is provided with a magnetic attraction interface and a pressure sensor; the inner end of the panel is provided with a biological sensor module, a main control chip, a micro-vibration motor and a battery module. The inner side of the panel is curved and attached to the wrist, and the curvature is contracted to adapt to different thicknesses; the light belt is arranged in a ring shape, and the light is uniformly diffused; the loudspeaker groove faces outward and upward, and is avoided from being shielded; the magnetic attraction interface is flush with the watchband, and does not disturb the closing; the pressure sensor is arranged at the wrist bone position, and the sensing surface is slightly concave. The biological sensor module is close to the radial artery, the sensing head is directional to the blood vessel; the main control chip is centrally and downward, and the connecting line is shortened; the micro-vibration motor is arranged on the ulna side, and the vibration sensing is uniformly transmitted to the wrist. The bracelet can monitor pressure and intervene in multiple ways, and is suitable for teenagers.

A bone removal device configured to increase efficiency of total ankle surgery by enabling removal of resected portion of tibia from a patient is disclosed. In particular, the bone removal device may enable a resected portion of a bone, such as, but not limited to, a tibia, to be pulled from the bone. The bone removal device may be configured to be used in total ankle surgery on a tibia, in carpectomies on hand or wrists, and other surgeries in which assistance removing a resected portion of bone would be beneficial. The bone removal device may include one or more filaments to remove the resected tibia from the tibia. The bone removal device may include a bone removal device body supporting one or more arms which, in an open position, enable the bone removal device to pull the resected portion of bone from the bone.

The application provides a dexterous hand thumb, a dexterous hand and a robot, the dexterous hand thumb is provided with a first driving assembly in a shell of a carpal bone assembly, an output shaft of the first driving assembly is in transmission connection with a first end of a connecting frame assembly, so that the connecting frame assembly rotates around a second axis, the second axis is a central axis of the output shaft of the first driving assembly, a second end of the connecting frame assembly is in transmission connection with a first end of a metacarpal bone assembly; a central axis of the shell of the carpal bone assembly is a first axis, and the first axis is perpendicular to the second axis, an xy plane is a palm plane, and a yz plane is a wrist cross section, so that the minimum included angle between the first axis and the xy plane is greater than or equal to 25 degrees and less than 45 degrees, and the minimum included angle between the first axis and the yz plane is greater than or equal to 5 degrees and less than 23 degrees; in the case that the number of driving motors is limited, the dexterous hand thumb is more suitable for the moving mode of a human hand thumb, so that the bionic performance of the dexterous hand thumb is improved.

A device and method are described herein relating to a wrist implant guide assembly having a radial guide and a carpal guide. The radial guide may include a radial guide body having a patient-specific surface for matingly contacting a radial bone of a patient, and a radial guide wire aperture configured to direct a guide wire into a radial bone of the patient. The carpal guide may include a carpal guide body having a patient-specific surface for matingly contacting a capitate bone and a hamate bone of the patient, and a carpal guide wire aperture configured to direct a guide wire into a capitate bone of the patient.