40 results about "First metatarsal bone" patented technology

Methods and devices are disclosed for manipulating alignment of the foot to treat patients with flat feet, posterior tibial tendon dysfunction and metatarsophalangeal joint dysfunction. An inflatable implant is positioned in or about the sinus tarsi and/or first metatarsal-phalangeal joint of the foot. The implant is insertable by minimally invasive means and inflatable through a catheter or needle. Inflation of the implant alters the range of motion in the subtalar or first metatarsal-phalangeal joint and changes the alignment of the foot.

The invention provides a fastener implant for osteosynthesis of fragments of the first metatarsal bone in its proximal portion situated towards the tarsal bone, the implant comprising at least a fastener element for fastening via a fastener face on or against the outside surface of the first metatarsal bone in order to hold the bone fragments together, wherein said fastener face includes at least one anatomical surface portion of shape that is substantially complementary to the shape of the plantar surface of the proximal portion of the first metatarsal bone.

The invention relates to the technical field of medical machinery, in particular to a first tread wedge joint plate. The first tread wedge joint plate comprises a plurality of fixing holes which are used for fixing the first tread wedge joint plate on a first metatarsal bone and an internal side wedge bone; a sliding hole which enables pressing between bones to be convenient during fusion of the first tread wedge joint is formed in the first tread wedge joint plate. According to the first tread wedge joint plate, tender moving of the first tread wedge joint surface is allowed when the bridge first tread wedge joint plate is fixed, namely, the first tread wedge joint surface gristle is kept and the joint is limited from moving; when the first tread wedge joint fuses the first tread wedge joint plate to be fixed, bone grafting after joint surface gristle is removed, pressing of the first tread wedge joint surface is achieved through a sliding hole at a far end of the first tread wedge joint plate, and accordingly the fusion rate is improved; the first tread wedge joint plate is in an anatomy type design, anatomical reduction is convenient, pre-bending of the first tread wedge joint plate during operation is not required, and the intensity of the first tread wedge joint plate is avoided from being influenced by bending during the operation.

The invention discloses the foot of a humanoid robot and a control method of the foot of the humanoid robot. The foot of the humanoid robot is characterized in that an upper disc body is arranged to serve as an ankle bone, the rear end face of the ankle bone is a plane, the front end face of the ankle bone is in a V shape when the front end face of the ankle bone is overlooked, an outer front end face body and an inner front end face body are symmetrically arranged on the V-shaped front end face, the ankle bone is supported in a three-force-point mode through three rod pieces on the rear end face and the front end face of the ankle bone, the three rod pieces refer to a heel bone, an inner metatarsal bone and an outer metatarsal bone, a rear planta pedis stress triangle is formed with the lower end of the ankle bone as a rear vertex and a point head facing backwards, and the upper end face of the ankle bone is connected with the lower limbs of the robot through ankle joints. According to the foot of the humanoid robot and the control method of the foot of the humanoid robot, linear driving devices are arranged on the lower limbs of the robot, all components are driven through flexible ropes according to set actions, and thus rotation of the foot joints of the robot is driven and controlled.

A shoe insole, which supports three points on a sole to stabilize a center of gravity, is provided by considering a skeletal structure of a foot and a sequential movement from foot joints to a body. The three points, which are a first metatarsal sesamoid bone, tuberosity of fifth metatarsal bone, and a calcaneal tuberosity, are supported from a sole side, and the three point balance can stabilize a center of gravity, and thereby a stimulus that adjusts body movements derived from a sole to help a body to be back to a right position can be given.

The invention relates to an insole with customized balance keeping gaskets, and the insole is needed by normal walks. The insole with the customized balance keeping gaskets comprises an insole body, an inner side metatarsal bones gasket, an inner side vertical arch gasket and an inner side foot root gasket, wherein the inner side metatarsal bones gasket is located in the front end part of the lower portion of the insole body and sticks to parts of a first metatarsal bone to a third metatarsal bone correspondingly and is formed by a quadrangle of oblique lines formed by the inner side face, the thickness of the inner side face is thick and gradually becomes thin towards outer side face, the inner side vertical arch gasket is located in the middle part of the lower portion of the insole body and sticks to the inner side vertical arch part correspondingly and consists of a streamline semi-circle, the thickness of a shoe inner side lower portion line corresponding part corresponding to parts of from a root bone of a foot to an astragalus, a tarsal navicular bone, a cuneiform bone, the first metatarsal bone to the third metatarsal bone through a load distance protrusion is thick and gradually becomes thin towards the outer side face, the inner side foot toot gasket sticks to the foot root inner side of the lower portion of the insole body and is in equal a quarter of the oval, the inner side face is a curve part of the oval, the thickness is thick and gradually becomes thin towards the outer side face.

The invention provides a smart insole for improving abnormal plantar pressure distribution caused by hallux valgus and a using method thereof. The smart insole comprises an insole body, and thin filmpressure sensors are arranged at a first metatarsal bone position, a second metatarsal bone position, a third metatarsal bone position, a forth metatarsal bone position and a fifth metatarsal bone position of the insole body respectively. The thin film pressure sensors are connected with a sensor data collection system through sensor connecting wires, and the sensor data collection system is connected with a wireless intelligent terminal through a wireless transmission device; the smart insole also comprises silica gel adhesive layers arranged above the thin film pressure sensors arranged at the first metatarsal bone position, the second metatarsal bone position, the third metatarsal bone position, the forth metatarsal bone position and the fifth metatarsal bone position of the insole body. The invention further provides a using method of the smart insole for improving abnormal plantar pressure distribution caused by the hallux valgus. According to the smart insole, by the combinationof the thin film pressure sensors, the silica gel adhesive layers and the wireless intelligent terminal, monitoring and improving of plantar pressure distribution are timely conducted; the smart insole has the advantages of being simple in structure, low in cost, good in comfort, convenient to adjust, high in correction accuracy and applicable to being popularizing and using in a wide range.

The invention discloses a humanoid robot two-freedom-degree parallel-connection shock absorption mechanical foot, and belongs to the field of humanoid robots. The mechanical foot comprises an upper metatarsal bone, an ankle shaft arranged on the upper metatarsal bone, a lower metatarsal bone, four shock absorption guide columns, a toe joint shaft, a big toe, a second toe, a third toe, a fourth toe, a small toe, a tensile spring A, a tensile spring B, and a toe spring for connecting the toe joint shaft with the lower metatarsal bone. A shank rod is arranged on the ankle shaft. The tensile spring A and the tensile spring B are symmetrically arranged on the two sides of the shank rod. The four shock absorption guide columns are of the same structure and each comprises a universal joint arranged on the upper metatarsal bone, a connecting rod, a sleeve arranged on the lower metatarsal bone, a tensile spring arranged in the sleeve, and a slide block. The initial state of the shank rod is vertical, and accordingly the tensile spring A and the tensile spring B are in a zero-force state. The humanoid robot foot is simple in structure and has two movement freedom degrees, a shock absorption function and a parallel-connection mode.

The invention provides a 3D-printed hallux valgus orthopedic insole. The insole comprises a 3D-printed insole body and a 3D-printed correction structure for correcting hallux valgus; the correction structure comprises a finger-separated finger sleeve, a first force application part and a second force application part; the finger-separated finger sleeve is arranged on the insole body and corresponds to a thumb area; the finger-separated finger sleeve comprises a finger sleeve main body and a finger sleeve force application wall; the finger sleeve main body is used for fixing the thumb of a patient; and the finger sleeve force application wall is used for separating a first phalanx from a second phalanx and forming a reaction force on the first phalanx and the second phalanx. The insole is simple in structure and convenient to use; the comfort degree and the fit degree are improved through personalized customization; and the silica gel material is used, so that the softness is good, andthe foot skin is protected from being extruded and abraded. Meanwhile, the insole has good correction effect on the first phalanx, a first metatarsal bone and metatarsal bone joints, and can apply accurate correction force. In addition, the insole can be placed in normal shoes, does not influence walking, is suitable for a patient to walk and stand, and is comfortable and beautiful.

Disclosed are orthopedic implant kits. One disclosed kit comprises an implant having a joint head portion, the joint head portion having a generally convex distal surface and generally concave proximal surface, the implant comprising a post portion protruding proximally from the proximal surface, the post portion having a dorsal surface and a ventral surface (which is a plantar surface in the case of a metatarsal bone) and including a first threaded aperture extending therebetween, and a bone screw. The bone screw has a threaded shaft complementary to the threaded surface of the post portion and preferably is configured to provide bicortical fixation of the implant.

The invention discloses a collapsing-prevention flat foot orthopedic insole structure. The insole structure comprises a bottom layer, a fitting layer, a support layer, a convex cushion block, an archarea support block, and a second elastic response layer; the convex cushion block is arranged at the position corresponding to the second and third metatarsal bone areas and is filled with polymer foam particles; the arch area support block is arranged at the position corresponding to the medial arch area, is fitted with the arch contour and filled with the polymer foam particles; the second elastic response layer is arranged at the position corresponding to the first, fourth and fifth metatarsal bone areas, and is filled with solid bulging macromolecule granules; the hardness of the bottom layer is greater than the hardness of the support layer and the hardness of the fitting layer, and stable support and wearing comfort can be provided. According to the collapsing-prevention flat foot orthopedic insole structure, partial collapse deformation of the insole can be avoided, and lasting and comfortable orthopedic effects are provided.

The application discloses a pair of socks capable of correcting halluces valgus. Each sock comprises a sock body, wherein the sock body comprises a toe part and a metatarsal bone part which are connected with each other; the toe part comprises a halluces sleeve; the halluces sleeve is used for independently coating a halluces to separate the halluces from a second toe; the metatarsal bone part comprises an elastic tightening area which is arranged around the circumference of the sock; the elastic tightening area is used for applying inward pressure to a first metatarsal bone and a fifth metatarsal bone so as to drive the halluces to open towards the outer side. The socks disclosed by the application can independently coat the halluces to separate the halluces from the second toes through the halluces sleeves; and meanwhile, the halluces is prompted to open towards the outer side by combining the elastic tightening area and applying the inward pressure to the first metatarsal bone, and the toe muscle is exercised through walking, thereby gradually achieving the correction target. The socks can be directly worn in shoes and can be used around the clock, and daily working, living and learning are not affected. The socks are economical and practical and is relatively good in durability and washing resistance.

The invention discloses an improved guide plate for osteotomy. The guide plate comprises a flat plate, two symmetric sides of the flat plate are belt toward the same direction to form a connecting section for connecting with a first metatarsal bone, a notch is formed in the flat plate and comprises a long edge and a short edge, the long edge of the notch is parallel to the length direction of the connecting section, a 45-degree angle is formed between the long edge and the short edge of the notch, a plurality of rectangular holes communicated with the notch are formed in the long edge of the notch of the flat plate, two long edges of each rectangular hole are parallel to the short edge of the notch, the rectangular holes are parallelly formed in an equally spaced manner, and a connecting hole is formed in the connecting section. According to the guide plate, bone cutting distances can be adjusted according to surgery requirements, an expected Z-shaped groove is sawn on a diaphysis of the first metatarsal bone along a z shape by the aid of the z shape formed by the rectangular holes and the notch, so that deviation of the sawn z-shaped groove is avoided, better surgery effect can be achieved by the guide plate, and osteotomy accuracy can be improved.

The invention discloses an ankle positioning device, and particularly relates to an adjustable three-dimensional positioning device and a using method thereof. The adjustable three-dimensional positioning device comprises a platform, a sliding rail, an ankle root bone positioning piece, a first metatarsal bone positioning slider and a tibia positioning system. An ankle is transversely, longitudinally and vertically positioned by using the root bone positioning piece, a first tibia outside positioning piece, a tibia positioning piece and the like, the positioning method is objective and scientific, the positioning gesture is easy to maintain, and the positioning information is easy to set and read. The deficiencies are made up for that in an existing orthotic insole custom-tailored production process, the neutral position of the ankle during standing is difficult to maintain, the ankle morphology data is difficult to measure, and a measurement error is large.