An ankle prosthesis can have a base and an upper hinge component that is pivotably attached to the base about an axis. First and second biasing elements can bias the upper hinge component in first and second rotational directions, respectively. At least one selectively extendable and retractable locking element can extend from one of the base and the upper hinge component and engage the other of the base and the upper hinge component to limit the pivotable movement of the upper hinge component.

This disclosure provides systems, apparatuses, and devices for a prosthetic digit usable with persons with amputations at or proximal to the metacarpophalangeal joint. The device restores prehension in a person with missing fingers or thumb by providing opposition to forces in the extension direction via a spring-loaded pawl and locking rack ratchet mechanism, thereby allowing an individual to manipulate or stabilize objects. The digit may be spring-loaded in the extension direction by a torsion spring or other biasing member. The pawl may be automatically disengaged from the rack when the digit reaches full flexion, and the full flexion disengage stop may be adjustable. The pawl may be automatically engaged with the rack when the digit reaches full extension, and the extension stop may be adjustable. The pawl may contain a lateral feature that creates interference with the anchoring linkage under load and limits deflection of the structure.

An outer frame for a prosthetic limb is provided. The outer frame is formed from one or more parts and has a plurality of air flow openings.

A hydraulic ankle assembly to be used by a user, wherein the ankle assembly includes a base configured to be attached to a spring assembly, a hydraulic cylinder rotatably attached to the base and configured to dampen rotation of the hydraulic ankle assembly, and a prosthetic adapter portion rotatably attached to the base and the hydraulic cylinder and configured to be attached to a prosthetic worn by the user. The base, the hydraulic cylinder, and the prosthetic adapter portion define a force triangle that defines an axis of rotation of the hydraulic ankle assembly. The axis of rotation is positioned in line with the center of mass of the user when the user is standing. The force triangle reduces forces on the hydraulic cylinder.

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 plantar-flexion and dorsi-flexion 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, 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.

A prosthetic limb includes: a socket as a thigh part; a thigh joint part provided on a side of the socket; a lower leg part coupled to the thigh joint part and provided to be rotatable around a knee shaft; a thigh part inclination angle acquisition unit that acquires an inclination angle Ψ formed by the socket relative to a vertical line passing through the knee shaft; and a rotational resistance control unit that weakens a rotational resistance of the knee shaft in accordance with a transition from a positive inclination angle formed when the socket is inclined rearward relative to the vertical line to a negative inclination angle formed when the socket is inclined forward relative to the vertical line.

The invention relates to a closure device (V) comprising at least one first and second closure part (1, 2). In particular, a first connection element (12) of the first closure part (1) has at least one guide portion (121), and a second connection element (22) of the second closure part (2) has at least one closure portion (221), wherein—the guide portion (121) has a guide surface (1210) which is inclined relative to the connection axis (A), with which the closure portion (221) comes into contact when the second closure part (2) is placed on the first closure part (1), and which forces the second connection element (22) to rotate about the connection axis (A) relative to the first connection element (12) along a first rotational direction (D1) when the two closure parts (1, 2) further approach each other under the effect of at least two magnet elements (M1, M2; M3, M4) of the closure device (V), —the closure device (V) has an adjusting device (M3, M4; 24) by means of which a force is applied to the second connection element (22), which has now assumed an intermediate position, in a second rotational direction (D2) opposite the first rotational direction (D1) such that the second connection element (22) is automatically rotated out of the intermediate position into a closed position relative to the first connection element (12) along the second rotational direction (D2), and —in the closed position (a), the closure portion (221) at least partly engages behind the guide portion (121) in order to hold the connection elements (12, 22), and thus the closure parts (1, 2), against each other, and (b) the second connection element (22) can be rotated in the first rotational direction (D1) in order to release the two closure parts (1, 2) from each other in order to open the closure device (V).

A knee joint includes: a thigh connection portion that is provided on a thigh portion side; a lower leg portion that is connected to the thigh connection portion and rotatably provided around a knee shaft; a knee angle restrictor structured to restrict a relative rotation of the thigh connection portion and the lower leg portion such that a knee angle θ formed by the thigh connection portion with respect to the lower leg portion does not exceed a predetermined lock angle θ.sub.L; and an accommodation space that accommodates a rotational resistor applying resistance to the rotation around the knee shaft in a case where the knee angle θ is equal to or less than the lock angle θ.sub.L.

The invention relates to an orthopaedic joint comprising an upper part and a lower part pivotably mounted thereon and a resistance device which is located between the upper part and the lower part and provides resistance against a pivoting movement about a pivot axis, and has a resistance adjusting device coupled to a control device which is coupled to at least one sensor such that the resistance can be adjusted by means of the control device on the basis of sensor data transmitted from the at least one sensor to the control device, a function is stored in the control device in which the joint is locked against pivoting in at least one direction in accordance with the sensor data, the function can be activated for locking and deactivated for unlocking on the basis of the sensor data.

Provided is a wearable assisted-walking device including one lower attachment body to the foot defining a lower anchoring point at the heel of the foot of a leg of the user; an upper attachment body to an upper part of the leg proximal from the knee defining an upper ventral anchoring point and an upper dorsal anchoring point arranged on the opposite side of the coronal plane of the user; and an intermediate attachment body defining a first intermediate anchoring point, a second intermediate anchoring point and a third intermediate anchoring point, each anchoring point movable respect and connected by cables to the leg; the intermediate attachment body being adapted to store the energy by a relative motion between the anchoring points and then use it for assist walking.