19 results about "Metatarsal joint" patented technology

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 utility model relates to insole technical field, propose a kind of slow pressure insole for solving arch collapse problem of reinforcing arch support force, including surface layer, support layer, bottom layer, the support layer is set between the surface layer and bottom layer by calcaneus of foot extension towards metatarsal bone site, the support layer is thermoplastic material, the support layer is located in the lower concave of central portion of calcaneus, and the lower concave wrapping portion of two side arc shapes is upwards, and support layer is located in the tarsometatarsal joint department between calcaneus and metatarsal bone and is upwards arched and is presented as upper arch portion.

This utility model relates to a foot cushioning device for placement between a user's foot and the ground. The device includes: a cushioning body located between the user's foot and the ground; the cushioning body having a forefoot portion; the forefoot portion having a first support area and a second support area; wherein the first support area corresponds to a first metatarsophalangeal joint of the user's foot; the thickness of the first support area is less than the thickness of the second support area; and the thickness of the second support area gradually decreases from the outer edge of the sole to the inner edge of the sole.

A kind of double-degree-of-freedom underactuated robot thumb based on linear slide rod mechanism relates to intelligent robot technical field.Base joint frame, proximal phalanx frame and distal phalanx frame are connected by metacarpophalangeal joint and interphalangeal joint to form base structure, two drivers are connected transmission screw lever at bottom, transmission link is Y-shaped structural member, two branch arms of which are hinged to the bottom end of distal phalanx frame, the main arm is provided with slide hole and slide rod to form sliding pair, the bottom end is supported by spring, the bottom end of slide rod is hinged to metacarpophalangeal joint, screw nut and screw lever are arranged on the both sides of the bottom end of transmission link to form ball screw pair, position sensor collects distal phalanx frame position signal, and magnet steel and hall sensor measure proximal phalanx frame position signal.Two degrees of freedom motion is realized by using parallel structure, stable and flexible adaptive enveloping grasping of object is realized, the overall structure is simple and efficient, and has the advantages of high integration, high power density, fast response speed and accurate measurement.

The present application relates to a kind of metatarsophalangeal joint replacement prosthesis for hallux valgus patient, it is related to medical instrument technical field, it includes toe bone prosthesis, metatarsal bone prosthesis and the toe bone platform pad between them;The handle body surface of metatarsal bone prosthesis and toe bone prosthesis is provided with serrated structure;Metatarsal bone prosthesis is close to toe bone end and is equipped with limiting groove, and toe bone platform pad is close to metatarsal end and is equipped with limiting lug, limiting lug is embedded in limiting groove to form hinged connection structure, so that joint activity is constrained to single sagittal plane.The present application fills the clinical blank of severe hallux valgus metatarsophalangeal joint replacement prosthesis, through stable hinged structure, lengthened serrated intramedullary canal handle and multi-angle adaptation design, while realizing deformity correction and long-term stability, joint activity is retained.

The utility model discloses a slow running shoes insole and running shoes based on 3D printing in the technical field of sports shoes insole, including foam base body, the foam base body is fused and is connected composite structure, the composite structure includes the forefoot area of supporting metatarsophalangeal joint area, the arch support area of supporting arch area and the heel pressure area of supporting heel area, the utility model discloses a foam base body and composite structure form composite running shoes insole, and then provide high cushioning and soft foot feeling, and the forefoot area retains the area below metatarsophalangeal joint, to intervene cushioning and guide correct power mode, provide support and energy feedback in the stage of climbing and stretching, and the arch support area provides support to the arch of flat foot, to provide arch support and resist the shear force of internal rotation, and the heel pressure area of rear end is to ensure that the heel can effectively disperse pressure when landing in the process of running, reduce impact, effectively avoid the heel pain problem of flat foot caused by long time running.

The present application belongs to the technical field of bionic robot, and particularly relates to a bionic foot sole and lower leg structure. The technical scheme is as follows: a bionic foot sole and lower leg structure, comprising a lower leg bone and a foot sole, the lower end of the lower leg bone is rotationally connected with an integrated joint, the output end of the integrated joint is fixedly connected with the foot sole, a linear driver is installed on the lower leg bone, the output shaft of the linear driver is rotationally connected with a driving link, a heel support seat is fixedly arranged on the shell of the integrated joint, and the end of the driving link away from the output shaft of the linear driver is rotationally connected with the heel support seat. The bionic foot sole and lower leg structure is provided in a compact, low-inertia and driving decoupling manner, and simultaneously realizes the actions of metatarsophalangeal flexion, dorsiflexion, inversion and eversion.

A kit for conducting a tarsometatarsal joint arthrodesis to orient a first metatarsal relative to a medical cuneiform includes a metatarsal cut guide having a positioning paddle and a cut guide slot, four wires, a cuneiform cut guide having a second locking mechanism, a third locking mechanism, a cuneiform cut guide slot and an alignment guide and a compression-distraction tool having a first sliding member, a second sliding member, a fourth locking mechanism associated with the first sliding member and a fifth locking mechanism associated with the second sliding member. The positioning paddle positioned substantially parallel to the cut guide slot. The metatarsal cut guide including a first locking mechanism.

A dexterous hand, including a hand module, the hand module includes one or more finger units and a palm unit, wherein each finger unit includes a plurality of phalanges and one or more interphalangeal joints, wherein the palm unit includes a carpometacarpal base, one or more metacarpals, one or more carpometacarpal joints, and one or more metacarpophalangeal joint, wherein each finger unit is hinged to a respective metacarpal by a respective metacarpophalangeal joint, wherein each metacarpal is respectively connected to the carpometacarpal base, wherein each interphalangeal joint has degrees of freedom of flexion extension, wherein each metacarpophalangeal joint has degrees of freedom of flexion extension, degrees of freedom of abduction adduction and degrees of freedom of circumduction, wherein each interphalangeal joint's degrees of freedom of flexion extension, each metacarpophalangeal joint's degrees of freedom of flexion extension, each metacarpophalangeal joint's degrees of freedom of abduction adduction are driven by different actuators.

The application discloses a modular rope-driven anthropomorphic dexterous hand with joint motion decoupling structure, which comprises a palm and five fingers, each finger being an independent modular structure and comprising a distal phalanx, a middle phalanx, a proximal phalanx and a metacarpal bone, and DIP, PIP and MCP joints connecting the phalanges. A key guide point of a driving rope path of the DIP joint is arranged at a center position of a rolling surface of the MCP joint, so that the length of the driving rope path of the DIP joint is not affected when the MCP joint moves, and complete decoupling of the MCP joint movement and the DIP joint driving is realized. A single finger has four degrees of freedom, i.e. three flexing and one side swinging, and the five fingers have a total of 20 degrees of freedom. The application realizes complete decoupling of joint movement, adopts a modular design, has a compact structure, is convenient to maintain and expand functions, and realizes natural flexing movement and passive recovery of anthropomorphism through coupling of a rope path and a recovery rope path, so that the control precision and movement stability are improved.

This invention provides an intelligent shoe upper based on liquid metal, including an upper body and a conductive pattern disposed in the interlayer of the upper body. The conductive pattern is formed by continuous flexible and stretchable wires. The conductive pattern has a connecting part and a strain detection part. The strain detection part is arranged in the detection area of ​​the upper body. The strain detection part is formed by continuous flexible and stretchable wires in a meandering manner. The connecting part connects the strain detection part to the circuit board. The detection area is located within the longitudinal interval between the metatarsophalangeal joint and the navicular bone.

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.

This utility model relates to a visual simulation training platform for suturing extensor tendons. Its overall shape is a human hand model, including fingers, palm, and wrist. It also includes: a simulated skin layer mounted on the outer surface of the hand model; slots on the back of the hand side of the fingers; a bone layer mounted in the slots of the fingers to simulate the five digits of the human hand; a circular damping shaft at the finger joints of the bone layer, through which the finger joints rotate; and a tendon mounted in the slots of the fingers on the surface of the bone layer. The tendon includes a fingertip segment and a root segment, with the fingertip segment connected to the fingertip and the root segment connected to a push-pull force sensor; a certain gap is left between the fingertip and root segments. The metacarpophalangeal joints flex and extend via the circular damping shafts, thereby simulating the process of regulating the tension of flexor and extensor muscles. Push-pull force sensors are used to monitor the tension received by the simulated tendons being sutured in real time.

This invention discloses a real-time piano playing posture correction system based on hand shape recognition, specifically in the field of music-assisted teaching technology. It addresses the problems of joint positioning loss and inaccurate dynamic force assessment under occlusion during playing. First, a primary contour is generated by fusing visual flow entities and reflection edges to construct a key mapping mesh. Then, inverse kinematics deduction is performed using skeletal proportion constraints to reconstruct the three-dimensional skeleton sequence under occlusion. Next, focusing on the key sinking time window, the vertical displacement gradient of the metacarpophalangeal joints and the rate of change of interphalangeal joint angles are compared to quantify joint motion values ​​and construct a force deformation feature vector. The extracted feature vectors are input into a standardized database for comparison, and posture error labels are parsed out. Finally, graphic and synchronous speech correction signals are generated at rests or long notes in the electronic score, constructing a closed-loop correction system that does not interrupt the playing rhythm, providing scientific support for piano posture-assisted teaching.

A mounting bracket for a prosthetic foot configured to attach to a residual limb, comprising an upper member, a lower member and compression torsion joint. The upper member comprises an upper flange, a mating post, and mounting portion configured to attach to the residual limb. The lower member comprises a mating portion, a lower flange, and a mounting portion configured to attach to the prosthetic foot. The compression torsion joint couples the upper member to the lower member and is configured to limit the vertical movement and torsional movement of the upper member with respect to the lower member.