175 results about "Metatarsal joint" patented technology

A shoe sole includes a cushion layer, an upper-side plate, and a lower-side plate. The cushion layer includes: a first region configured to support a metatarsophalangeal (MP) joint of a foot of a wearer; and a second region included in a portion located on a rear side with respect to the first region and located on a front side with respect to the rearfoot portion. The second region includes: a third region located in a central portion in a left-right direction; a fourth region located in a medial foot-side end portion in the left-right direction; and a fifth region located in a lateral foot-side end portion in the left-right direction. The fourth region and the fifth region are lower in compression rigidity than the first region, and the third region is lower in compression rigidity than the fourth region and the fifth region.

The invention provides a method for quickly positioning the instant center of a finger joint and a rehabilitation glove following the instant center, the method for quickly positioning the instant center of the finger joint comprises the following steps: A, keeping a finger in a half-bending state, and making a straight line collinear with the outer contour of each knuckle of the finger; b, folding lines of all joints are made through straight lines and finger knuckles, and geometric center lines of the fingers are made through the folding lines; c, making a positioning circle tangent to the fold lines of the joints and the geometric center line of the finger in an acute angle space formed by the fold lines of the joints and the geometric center line of the finger; d, the positioning circle radius R1 at the metacarpophalangeal joint of the finger is larger than or equal to 1 mm and smaller than or equal to 2.5 mm, and the positioning circle radius R2 of the near-end interphalangeal joint and the far-end interphalangeal joint of the finger is larger than or equal to 0.5 mm and smaller than or equal to 2 mm; e, in engineering application, the equivalent instantaneous center of the metacarpophalangeal joint varies within the range of a positioning circle with the radius being R1, and the equivalent instantaneous centers of the near-end interphalangeal joint and the far-end interphalangeal joint varies within the range of a positioning circle with the radius being R2.

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.

A minimally invasive method of correcting a bunion includes performing an osteotomy to divide the metatarsal into first and second portions, creating a pocket in the first portion implanting a nail in the pocket, securing a suture to the joint capsule, tensioning the suture to align the great toe with the metatarsal, attaching the suture to the nail, and fastening the nail to the second portion. The nail includes an anchor portion for anchoring in the first portion, a head for attachment to a second portion, a passage for attachment of the suture, a first aperture for a fastener to attach the head with the first portion, and a second aperture for a fastener to attach the head with the second portion.

The utility model discloses an expansion type subtalar joint brake which is characterized by comprising an outer nail body and an inner nail body which are matched with each other, the inner nail body is of a circular truncated cone structure, the outer nail body comprises a columnar nail head and a plurality of expansion pieces fixedly connected with the nail head, the expansion pieces are distributed along the circumference to form a cavity, and the cavity is used for containing the inner nail body. And the outer nail body is made of a polymer based on lactic acid. According to the expansion type subtalar joint brake, the inner nail body and the outer nail body are matched, the nail head of the outer nail body is implanted into a tarsal bone tube, fixation can be firmer, and tissue cannot be cut by the outer nail body.

A bone displacement system includes an anchoring portion, a tool engaging portion, a compression distraction mechanism, a lateral body and a distal body. The anchoring portion has an aperture for receiving a wire to connect the anchoring portion to a proximal bone. The anchoring portion is connectable to a downwardly depending member for holding a tissue portion. The tool engaging portion is connected to the anchoring portion and is configured to connect a tool thereto. The compression-distraction mechanism is connected to the anchoring portion. The lateral body is connected to the compression-distraction mechanism and engageable with a lateral bone. The distal body is connected to the compression-distraction mechanism. The distal body has an aperture for receiving a wire to connect the distal body to a distal bone. The compression-distraction mechanism is configured to move the anchoring portion relative to the distal body.

A variety of surgical procedures may be performed on the bones of the foot, such as on one or more lesser metatarsals of the foot positioned laterally of the first metatarsal. For example, a surgical procedure may involve cutting an end of one or both of a second metatarsal and an intermediate cuneiform and / or cutting an end of one or both of a third metatarsal and a lateral cuneiform. The tarsometatarsal joints defined be one or both sets of bones may be cut to treat an arthritic joint, metatarsus adductus, and / or other clinical condition. In any case, various surgical instruments can be utilized during a procedure to help increase the accuracy and repeatability of the procedure patient-to-patient, improving overall patient outcomes. For example, one or more cut guides, compressor-distractor devices, and / or other instruments designed to accommodate the specific anatomical conditions of the procedure being performed may be utilized during procedure.

The invention discloses a lindera glauca extract, a preparation method thereof and application of the lindera glauca extract in preparation of drugs for preventing and / or treating rheumatoid arthritis. The research finds that the lindera glauca extract can obviously reverse arthritic rat plantar part swelling and toe bending, relieve ankle joint injury, relieve synovial hyperplasia and inflammatory cell infiltration, inhibit joint fusion, relieve joint gap stenosis, relieve articular surface fusion tendency, increase bone mineral density and bone trabecula number, reduce bone trabecula separation degree and improve joint fusion. The lindera glauca extract can be used for relieving rheumatoid arthritis by protecting the inherent structure of joint tissues and improving inflammation, so that a novel natural medicine choice is provided for preventing and / or treating rheumatoid arthritis.

To provide an insole and footwear that can be used safely for a long period of time by both the elderly and young people, and that can prevent hallux valgus and flat feet and inhibit the progression of the symptoms. [Solution] The problem was solved by an insole comprising a medial arch support slope, an lateral arch support slope that supports the lateral arch, a central arch elevator that elastically presses and supports from the plantar side the flexor digitorum brevis, plantar aponeurosis, and the flexor digitorum brevis that cover the plantar sides of the third and fourth metatarsals, from near the posterior side of the MTP joint to near the Chopart joint, a phalangeal elevator that is formed by a mountain-like section that forms a gentle downward slope and protrudes downward from the back surface or upward from the surface, a flat surface provided between the central arch elevator and the phalangeal elevator, and a heel cup.

A bone correction system is configured to attach to the medial cuneiform and the first metatarsal of a patient's foot in a deformed configuration. An articulation joint is configured to rotate and angulate the first metatarsal with respect to the medial cuneiform. A translation assembly is configured to cause the first metatarsal to travel toward and / or against the medial cuneiform. Thus, the bone correction system is configured to iterate the patient's foot from the deformed configuration to a corrected configuration. A bone plate can permanently fix the medial cuneiform and the first metatarsal in the corrected configuration.

The invention belongs to the field of robots, and particularly relates to a three-degree-of-freedom rigid-flexible coupling dexterous finger and a dexterous hand, and the dexterous finger comprises a finger knuckle module, a double-end spherical hinge connecting rod, a palm inner finger driving module, a driving transmission mechanism and an arm inner finger driving module. By fusing a rigid space connecting rod mechanism and a flexible driving transmission mechanism, the contradiction that a traditional rigid structure lacks flexibility and a flexible structure is insufficient in rigidity is ingeniously solved. Two degrees of freedom of flexion and extension and adduction and abduction of fingers at metacarpophalangeal joints are realized by utilizing a spatial connecting rod mechanism formed by a knuckle supporting frame, a proximal phalanx, a deflection transverse shaft and a double-end spherical hinge connecting rod; meanwhile, the power of the finger driving module in the arm is efficiently transmitted to the interphalangeal joints through the driving transmission mechanism, the middle joint and the distal phalanx are driven to achieve coupling or self-adaptive buckling, and therefore the third degree of freedom is obtained, and the problem that the contradiction exists between insufficient flexibility of a traditional rigid structure and insufficient rigidity of a flexible structure is solved.

The invention discloses a pair of children's shoes and a preparation method thereof, and relates to the field of children's shoes, each of the children's shoes comprises an upper, a sole, a toe cap protection structure and a detachable orthotic insole, the upper is formed by sewing a breathable antibacterial composite fabric; scientific foot protection is achieved through multi-dimensional structure optimization, the 1 / 3 bending structure of the shoe sole accurately corresponds to the first-fifth metatarsophalangeal joint position of the foot, the 15-degree upwarp design and the 3-5 mm sunken structure accord with the foot movement track of a child during walking, running and jumping, the space in the shoe is increased, joint stress damage is reduced, the correction shoe pad is provided with supporting pads aiming at the transverse arch of the forefoot and the longitudinal arch of the inner side and the longitudinal arch of the outer side respectively, and therefore the correction effect is achieved. By the aid of pressure sinking convex-concave grooves in metatarsophalangeal joints and toe joints, plantar pressure can be dispersed, a normal physiological curve of an arch can be maintained, foot development deformity such as flatfoot, strephenopodia or valgus can be effectively prevented, and meanwhile, the surrounding heel cup with the height of 12 mm and the inner side heel cup cooperatively fix the heel to guarantee that the foot keeps a correct force line during movement.

A wearable device may include an exoskeleton configured to attach to a hand of a user, wherein the exoskeleton comprises one or more finger linkages for respective fingers of the hand. A finger attachment may be configured to slide onto each finger and attached to the respective one or more finger linkages. The one or more finger linkages comprises a metacarpophalangeal (MCP) joint linkage and proximal interphalangeal (PIP) joint linkage, wherein the one or more finger linkages couples the metacarpophalangeal (MCP) joint linkage and proximal interphalangeal (PIP) joint linkage together so that movement is restricted to one degree of freedom (DOF).

A device for exercising / strengthening feet includes a left pad for supporting and exercising a left foot and a right pad for supporting and exercising a right foot, each pad comprising a rear portion to support the hindfoot thereon and a front portion to support the midfoot and the forefoot thereon, the front portion comprising a hallux portion to support the hallux. A notch is positioned adjacent to the hallux portion and underneath the first metatarsophalangeal (MTP) joint of the foot. The hallux portion and the notch are configured such that at least a portion of the first MTP joint is unsupported by the front portion to reduce a pressure experienced by the first MTP joint when the hindfoot is supported on the heel portion and to provide increased plantarflexion of the first metatarsal bone of the foot when the hindfoot is raised and unsupported by the rear portion.

The utility model discloses a mechanical finger with a T-shaped shaft joint structure, which comprises a T-shaped shaft component, the T-shaped shaft component comprises a joint part and a shaft part, and a metacarpal bone unit and a finger unit are respectively hinged to two ends of the shaft part and the joint part; one end of the first rotary kinematic pair is connected to the finger unit, and the other end is movably connected to the distal end of the metacarpal bone unit; one end of the second rotary kinematic pair is connected to the finger unit, and the other end is movably connected to the near end of the metacarpal bone unit; when the rotating directions of the first rotating motion pair and the second rotating motion pair are opposite, the finger unit performs side-sway motion along the joint part relative to the metacarpal bone unit; and when the rotating directions of the first rotating motion pair and the second rotating motion pair are the same, the finger unit performs bending motion along the shaft part relative to the metacarpal bone unit. A parallel and stable double-supporting frame is formed, the torsion resistance and lateral load resistance of the joint in the side-sway and bending state are enhanced, and high-rigidity and high-precision double-degree-of-freedom movement in a compact space is achieved.

A method of preparing a metatarsophalangeal joint for fusion may involve surgically accessing the metatarsophalangeal joint and separating the metatarsal from the opposed proximal phalanx at the joint. The technique may involve preparing an end of the metatarsal and preparing an end of the opposed proximal phalanx for fusion. With or without the aid of a bone positioner, the metatarsal may be moved in one or more planes, such as the frontal and transverse planes. The proximal phalanx may also be moved in one or more planes, for example relative to the moved metatarsal. Subsequently, a bone fixation device can be applied across or through the metatarsophalangeal joint separating the metatarsal from the opposed proximal phalanx.

The invention discloses a tendon-rope-driven dexterous hand finger for metacarpophalangeal joint movement decoupling. A flexion and extension rotating joint and a side-sway rotating joint of the tendon-rope-driven dexterous hand finger are both of a bidirectional rotating structure controlled by a rope driver; the side-sway rotating joint is of a rolling meshing structure formed by two toothed plate components, rope guide wheels are arranged on the two toothed plate components, the two rope guide wheels are used for guiding and outputting a flexion and extension driving rope of the flexion and extension rotating joint and a side-sway driving rope of the side-sway rotating joint, and the winding directions of the flexion and extension driving rope on the two rope guide wheels are opposite. The two free ends of the side-sway driving rope are guided by the rope guide wheels to be arranged in a staggered mode. After the scheme is adopted, a transmission link capable of realizing side-sway motion and flexion-extension motion is decoupled, so that the effective length change of the flexion-extension driving rope caused by the side-sway motion is completely compensated geometrically, and the effective length of the flexion-extension link is kept constant at any side-sway angle; and the action stability and the repeated positioning performance of the fingers of the dexterous hand under the multi-posture and multi-load conditions are improved.

A glove system (100) includes a glove body (110) and a plurality of first strain sensors (120) and a plurality of second strain sensors (130) disposed on the glove body (110), where each first strain sensor (120) of the plurality of first strain sensors (120) is located at an interphalangeal joint of a user when the user wears the glove body (110), and each second strain sensor (130) of the plurality of second strain sensors (130) is located at an interphalangeal joint of the user when the user wears the glove body (110). Each of the plurality of second strain sensors (130) is located at one metacarpophalangeal joint and is configured to measure a deformation of the interphalangeal joint in a single degree of freedom, and each of the plurality of second strain sensors (130) is located at one metacarpophalangeal joint and is configured to measure a deformation of the metacarpophalangeal joint in two degrees of freedom, the single degree of freedom and the two degrees of freedom each including a degree of freedom corresponding to bending of the finger.

The application provides an underactuated bionic dexterous hand, a system and a control method thereof. The underactuated bionic dexterous hand comprises a palm, five fingers, a control plate and a steering engine installed on the back of the palm through a threaded hole. The thumb comprises a joint, a tendon rope for driving the bending of the finger, a metacarpal bone, a proximal phalanx and a distal phalanx connected through a cylindrical pin in sequence. The index finger, the middle finger, the ring finger and the little finger have the same structure and each comprises a joint, a tendon rope for driving the bending of the finger, a distal phalanx, a middle phalanx and a proximal phalanx connected through a cylindrical pin in sequence. A finger root stroke limiter is arranged at the metacarpophalangeal joint of the thumb and the palm, and the metacarpophalangeal joint of the index finger, the middle finger, the ring finger and the little finger and the palm, the middle phalanx and the distal phalanx are each provided with a finger root stroke limiter. The application has high human simulation degree, is light and flexible, and solves the technical problems of the overlarge size, the overly complex structure, the rigid motion and the low human simulation degree of the dexterous hand.

According to the technical scheme, the ankle joint prosthesis comprises a tibia component, a gasket and a talus component. The tibia component is located on the outermost side and composed of a base, a supporting plate and a central screw. A hollow ball socket with sawteeth is arranged at the lower part of the base; the supporting plate is a solid hemisphere, sawteeth meshed with the sawteeth on the base are arranged on the surface of the supporting plate, angle adjustment can be achieved, and the supporting plate and the base are fixed through a central screw. The gasket is a cylinder, the upper portion of the gasket is connected with the supporting plate through a protrusion, the protrusion is provided with a recess matched with the central screw, grooves and micropores are formed in the surface of the protrusion, and the bottom of the protrusion is an arc-shaped recess used for being connected with the talus component. The gasket is further fixed to the supporting plate through the connecting rod, and stable joint connection and angle adjustment can be achieved through the overall structure.

The application discloses a device for evaluating ankle joint stability and an evaluation method thereof, and relates to the technical field of medical examination apparatuses. The device for evaluating ankle joint stability and the evaluation method thereof comprise: a mounting frame which is welded from a steel structure and is fixed on the edge of a sickbed, a table or a chair through a fixing structure; a driving structure which is installed on the mounting frame and is used for driving a swing arm to swing back and forth around a hinge point; and two sets of measuring structures which are installed at the first metatarsophalangeal joint of the dorsum of the foot and the heel position corresponding to the bottom of the swing arm, respectively, and are used for swinging the lower leg of a patient in a reciprocating manner through an electric driving mode, detecting the swing of the first metatarsophalangeal joint of the dorsum of the foot of the patient, and analyzing actual data, so that whether the ankle joint stability of the patient is abnormal can be accurately identified. The mechanical driving mode is more regular than the self-swinging of the patient, is helpful to more objectively and standardly find abnormalities, has a relatively low requirement on the experience of doctors, and is lower in cost.

A device for protecting a plantar pad of a foot, including: a pad including a viscoelastic material, configured to be held on the skin of the plantar region, and to cover all the metatarsal heads and metatarsophalangeal joints of the foot, and an elastic strap attached to lateral edges of the pad, and including a transverse and a longitudinal portion forming a brace configured to pass between a big toe and an adjacent toe, the longitudinal portion having a distal edge fixed to a distal edge of the pad, the transverse portion having a distal edge delimiting, with the pad and a lateral edge of the longitudinal portion, an aperture for the passage of the second to fifth toes, the distal edge of the transverse portion and the lateral edge having, in a unstretched flat state, rectilinear portions forming between them an angle between 75 and 100°.

A method for treating an articular fracture of a tibia using a tibia plate with an extension arm, including: making an incision to expose the tibia; reducing the articular fracture of the tibia; contouring the tibia plate to fit the tibia; preliminarily fixing the tibia plate to the tibia; placing a screw partially into the tibia through a lateral elongated hole in the tibia plate; applying compression between a plate screw hole in the extension arm and an anterior surface of the tibia; and placing additional plate screws in the tibia through additional screw holes in the tibia plate.

A bone correction system is configured to attach to the medial cuneiform and the first metatarsal of a patient's foot in a deformed configuration. An articulation joint (156) is configured to rotate and angulate the first metatarsal with respect to the medial cuneiform. A translation assembly (158) is configured to cause the first metatarsal to travel toward and / or against the medial cuneiform, parallel to the axis (155) of a shaft (152). Thus, the bone correction system is configured to iterate the patient's foot from the deformed configuration to a corrected configuration. A bone plate can permanently fix the medial cuneiform and the first metatarsal in the corrected configuration.

Osteotomy cutting systems and surgical methods are provided herein. One surgical method includes coupling, to a cuneiform of a subject, a surgical apparatus for use in facilitating correction of a bunion and coupling the surgical apparatus to another bone of the subject. Another surgical method includes coupling a surgical apparatus to a cuneiform and metatarsal of a subject, coupling a cutting block for alignment at a joint between the cuneiform and the metatarsal, and performing a surgical procedure utilizing the surgical apparatus and the cutting block to correct a bunion. A further surgical method includes providing a surgical apparatus for use in facilitating correction of a bunion in a subject in which the surgical apparatus is configured to couple to a cuneiform and a metatarsal of the subject and performing a surgical procedure utilizing the surgical apparatus while the surgical apparatus is coupled to the cuneiform and the metatarsal.

Apparatus and methods are disclosed for correcting deformities in a patient's foot. In one example, a metatarsus adductus is addressed using a pin placement guide that is angulated to be placed in alignment with a cuneiform and a metatarsal, such that the TMT joint can be subsequently cut, and the metatarsal moved into proper alignment. Th pin placement guide can be a variable angle guide, or a kit of fixed-angle pin placement guides can be provided.

The utility model discloses a pair of orthopedic insoles and aims to overcome the defects that the conventional orthopedic insoles are difficult to add and delete and are difficult to adapt to foot characteristics of patients. The insole comprises an insole body and flexible additional materials, additional material holes are formed in the insole body, the flexible additional materials are filled in the additional material holes, the additional material holes are formed in one or more positions, corresponding to metatarsophalangeal joints, arches and heels, of the insole, and the additional material holes and the flexible additional materials are correspondingly arranged according to the foot shape of an orthopedic object. The flexible additive is made of silica gel, and the hardness range of the silica gel is 0-40 degrees. The mode that the additional material holes are matched with the silica gel to serve as flexible additional materials is adopted, so that medical staff can easily customize the orthopedic insole according to the foot shape of a patient.

A variety of surgical procedures may be performed on the bones of the foot, such as on one or more lesser metatarsals of the foot positioned laterally of the first metatarsal. For example, a surgical procedure may involve cutting an end of one or both of a second metatarsal and an intermediate cuneiform and / or cutting an end of one or both of a third metatarsal and a lateral cuneiform. The tarsometatarsal joints defined be one or both sets of bones may be cut to treat an arthritic joint, metatarsus adductus, and / or other clinical condition. In any case, various surgical instruments can be utilized during a procedure to help increase the accuracy and repeatability of the procedure patient-to-patient, improving overall patient outcomes. For example, one or more cut guides, compressor-distractor devices, and / or other instruments designed to accommodate the specific anatomical conditions of the procedure being performed may be utilized during procedure.

The application belongs to the technical field of robots, and discloses a motion decoupling double-path rope-driven bionic thumb device, which comprises a distal phalanx, a proximal phalanx, a metacarpal bone, a thumb base, IP joints, MCP joints and CMC joints for connecting the phalanges; the distal phalanx, the proximal phalanx, the metacarpal bone and the thumb base are connected through tendon rope transmission. The rope path for driving the IP joint does not pass through the MCP joint, and the part of the rope path across the MCP joint is wrapped by a Bowden tube assembly, so that the length of the rope path remains constant when the MCP joint moves, and the motion decoupling of the MCP joint and the IP joint is realized; the rope path for driving the MCP joint is also wrapped by a Bowden tube assembly outside, so that the length of the rope path remains constant when the CMC joint moves, and the motion decoupling of the MCP joint and the CMC joint is realized. The application has the advantages of compact structure, joint motion decoupling, precise force control, strong bearing capacity and the like.

The application provides a kind of inner bag shoe sole combined shoes, wherein the shoes include inner shoes (1) and outer shoes (2), the outer shoes (2) can be set in the outer shoes (1), the outer shoes (2) include foot palm fixing part (21), instep fixing part (22), heel fixing part (23) and shoe sole (24), foot palm fixing part (21) is fixedly arranged at the toe and metatarsophalangeal joint part of shoe sole (24), and is bent and extends to the front side of toe and both sides of metatarsophalangeal joint from the instep; heel fixing part (23) is fixedly arranged at the heel part of shoe sole (24), and extends upward and to the toe direction respectively from the heel; instep fixing part (22) is fixedly arranged on shoe sole (24) at lumbar fossa position and connected with heel fixing part (23). The shoes of the application are simple in structure, comfortable to wear, and the inner shoes and outer shoes are quickly and simply disassembled and combined.