42 results about "Ankle motion" patented technology

A prosthetic ankle and foot combination has an ankle joint mechanism constructed to allow damped rotational movement of a foot component relative to a shin component. The mechanism provides a continuous hydraulically damped range of ankle motion during walking with dynamically variable damping resistances, and with independent variation of damping resistances in the plantarflexion and dorsiflexion directions. An electronic control system coupled to the ankle joint mechanism includes at least one sensor for generating signals indicative of a kinetic or kinematic parameter of locomotion and / or walking environment, the mechanism and the control system being arranged such that the damping resistances effective over the range of motion of the ankle are adapted automatically in response to such signals. Single and dual piston hydraulic damping arrangements are disclosed, including arrangements allowing independent heel-height adjustment.

An exercise apparatus is disclosed. The exercise apparatus comprises: a three-dimensional coordinate system having an x-axis, a y-axis, and a z-axis; lower limb segments; a moving arm; a multi-axis force sensor; at least one footplate attached to said multi-axis force sensor for supporting a human foot or shoe; a compact real-time ankle motion measurement device, said motion measurement device attached between the leg and foot and capable of measuring the ankle joint motion in at least one degree of freedom; and a central processor, said central processor capable of calculating lower-limb joint moments in real time. The central processor calculates lower-limb joint moments with a modified inverse dynamic method, which does not involve computation of location of center of pressure.

The invention discloses a robot crus structure capable of imitating human body ankle motions by utilizing pull rods. The robot crus structure capable of imitating human body ankle motions by utilizing the pull rods comprises a supporting frame, a foot plate, a framework, an inner shaft rod and the two rear pull rods, wherein the supporting frame is arranged under knees of a robot and is adjacent to the positions of two driving modules, two first pivot joint portions are arranged at the top of the supporting frame, the foot plate is arranged at the bottom of the supporting frame, the framework is positioned between the two first pivot joint portions, outer shaft rods are respectively arranged at two corresponding sides of the framework, each outer shaft rod is in pivot joint with each first pivot joint portion and penetrates through each first pivot joint portion to be connected with each driving module, the inner shaft rod penetrates through the other two corresponding sides, a connection rod is arranged at one end of the inner shaft rod, two ends of each rear pull rod are respectively connected with the connection rod and the foot plate, when the outer shaft rods and the inner shaft rod are respectively driven to move, the framework and the connection rod respectively swing back and forth, and side to side, and the pull rods are similar to crus muscles of a human body and control the foot plate to make various ankle motions.

Apparatus for bi-directional ankle exercise movements has a main-frame with a seat and upwardly extending columns at either side to support a “U” shaped sub-frame, mounted so that it pivots about a horizontal axis passing very nearly through the ankles of a seated user and interconnecting linkages simultaneously enforcing ankle inversion, with plantarflexion and then ankle aversion, with dorsiflexion, about perpendicularly intersecting axes, while resisting such movements, so as to provide bidirectional ankle exercises according to a progressive resistance program, thus strengthening the ankle muscle groups for enhanced balance and dynamic stability.

The invention belongs to the technical field of inertial signal perception recognition and Parkinson's intelligent medical treatment, and specifically relates to a wearable device for quantifying and identifying Parkinson's patients' movement disorders, aiming to solve the problem of lack of reliable and non-invasive wearable devices to accurately realize Parkinson's patients. The problem of quantification and identification of dyskinesias. The invention includes: collecting wrist motion signals and ankle motion signals through the wrist inertial measurement unit and ankle inertial measurement unit worn on different sides of the body of the measured object and the healthy person, and extracting the characteristics of the signals; sending the extracted characteristics to the output processing terminal , through the preset quantification and identification method of Parkinson's patient's movement disorder, the disease degree of the measured object is obtained and output. The invention is simple in structure, easy to operate, suitable in size and convenient to wear, low in power consumption, and combined with motion signals of the wrist and ankle, the judgment result is accurate and reliable.

The invention discloses a tandem experiment facility with five degrees of freedom for simulating ankle gaits. The tandem experiment facility comprises a general framework, a tibial shaft, a cadaver ankle tibia insertion rod, a frontward and backward movement mechanism and control system, a sagittal-plane-within rotation mechanism and control system, a coronal-plane-within rotation mechanism and control system, a level-within rotation mechanism and control system, a vertical movement mechanism and control system, a tibia loading mechanism and control system, and a muscle loading mechanism and control system. The tandem experiment facility can simulate kinematics actions in the stance phase of the ankle giants within 3 seconds to 5 seconds, can simulate dynamics in the stance phase of the ankle giants, and can collect ankle kinematics and dynamics data to obtain complete, comprehensive and effective data of original experiments on kinematics and dynamics in the stance phase of the ankle gaits, thereby providing a dynamics experiment and theoretical research platform for discussions of clinical ankle motion system disease mechanism, scientific verification of operative plans, researches of ankle motion injury and protection, development of bionic ankle systems, and the like.

The invention discloses a multi-degree-of-freedom ankle joint intelligent rehabilitation device, comprising: a base, including a left L-shaped connecting seat and a right L-shaped connecting seat; a wearable calf component fixedly arranged on the mounting seat body; a wearable foot plate The components are distributed on the lower front of the calf wearable component; the left follower component is fixed on the left end surface of the foot wearable component; the right follower component is fixed on the right end surface of the foot wearable component; the left follower component and the right follower The top of the moving component is correspondingly connected to the left L-shaped connecting seat and the right L-shaped connecting seat; the plantar dorsiflexion driving component is connected with the left driving component, and is used to drive the left moving component and the right following component for plantar flexion / The rotational motion in the dorsiflexion direction drives the foot plate wearable components to do plantar flexion / dorsiflexion. The invention can realize the automation of ankle joint plantarflexion / back extension movement, can better simulate ankle joint movement, and improves the effectiveness, flexibility and comprehensiveness of ankle joint rehabilitation training.