Disclosed is a portable upper limb rehabilitation mechanical arm with a grading adjustment training function. The mechanical arm comprises a big arm component, a supporting component, a grading adjustment component, a small arm component, a wrist component and a hand component, wherein the big arm component comprises a big arm shell, a big arm back plate, a first big arm support and a second big arm support; the supporting component comprises a supporting base, an inner supporting rod, an outer supporting rod, a sealing piece, a reversing component and a connecting bolt group; the grading adjustment component comprises an elbow motor shell, an elbow joint motor and an adjusting component; the small arm component comprises a first small arm support, a second small arm support, a small arm back plate and a small arm shell.

A human-computer interface system having an exoskeleton including a plurality of structural members coupled to one another by at least one articulation configured to apply a force to a body segment of a user, the exoskeleton comprising a body-borne portion and a point-of-use portion; the body-borne portion configured to be operatively coupled to the point-of-use portion; and at least one locomotor module including at least one actuator configured to actuate the at least one articulation, the at least one actuator being in operative communication with the exoskeleton.

A walking assist device includes: a pair of right and left handles that are movable back and forth with respect to a frame in accordance with arm swing performed during walk of a user; rails on which the handles are provided and which limit movement of the handles in a movable range in accordance with arm swing performed during the walk of the user; a handle information acquisition unit that acquires information related to movement of the handles; and a control unit that controls a drive unit in accordance with the information from the handle information acquisition unit.

The present disclosure provides a brace system including an upper portion and a lower portion. The brace system may also include a first pulley rotatably coupling the upper portion to a first intermediate link positioned between the upper portion and the lower portion. The brace system may also include a second pulley rotatably coupling the first intermediate link to a second intermediate link positioned between the upper portion and the lower portion. The brace system may also include a third pulley rotatably coupling the second intermediate link to the lower portion. Further, the brace system may include at least one tension-bearing element substantially encircling each of the first pulley, the second pulley, and the third pulley.

A novel shoulder brace that can provide active dynamic support to an injured shoulder while providing the capability to also raise the attached arm and support the arm in an elevated position. The brace can be used both in conjunction with a rehabilitation intervention program to maintain or restore range of motion and strength and to assist in functional tasks at work and at home. The brace works by supporting a locking or ratchet mechanism connected to an arm cuff from a chest piece that, when desired, the user can move the arm connected to an injured shoulder and supported by the arm cuff from a normal side resting position to an elevated position 90 degrees from the resting position while transferring the load created by the arm and whatever the hand is holding back to the chest piece and to the torso of the user. A release mechanism can be used to release the locking or ratchet mechanism to let the user lower their arm back to a resting position.

A wearable upper limb rehabilitation training robot with precise force control includes a wearable belt, a multi-degree-of-freedom robot arm, and a control box. The robot is worn on the waist of a person by using a belt, and driven by active actuators, to implement active and passive rehabilitation training in such degrees of freedom as adduction/abduction/anteflexion/extension of left and right shoulder joints and anteflexion/extension of left and right elbow joints. In addition, a force/torque sensor is mounted on a tip of the robot arm, to obtain a force between the tip of the robot arm and the human hand during rehabilitation training as a feedback signal, to adjust an operating state of the robot, thereby realizing the precise force control during the rehabilitation training.

Exoskeleton kinematic chain arranged to pivotally connect a first element to a second element, said first element comprising two pivot points A.sub.1 and B.sub.1 located at a distance A.sub.1B.sub.1, said second element comprising two pivot points A.sub.2 and B.sub.2 located at a distance A.sub.2B.sub.2. The exoskeleton kinematic chain comprises a first external link pivotally connected to the first element at the pivot point A.sub.1 and a first end link pivotally connected to the first external link at a pivot point D.sub.1, said pivot point D.sub.1 being located at a distance A.sub.1D.sub.1 by the pivot point A.sub.1. The exoskeleton kinematic chain comprises then a second external link pivotally connected to the second element at the pivot point A.sub.2, and a second end link pivotally connected to the second external link at a pivot point D.sub.2, said pivot point D.sub.2 being located at a distance A.sub.2D.sub.2 by the pivot point A.sub.2. The exoskeleton kinematic chain also comprises a first intermediate link pivotally connected to the first element at the pivot point B.sub.1 and integrally connected to the second end link at a junction point C.sub.2, a second intermediate link pivotally connected to the second element at the pivot point B.sub.2 and integrally connected to the first end link at a junction point C.sub.1. The first and the second end link are pivotally connected to each other at a pivot point M. Defining ==θ, for any value of θ, the projections of the pivot points A.sub.1, B.sub.1, A.sub.2, B.sub.2 in a plane π, lay in a circumference K having center O and radius r=A.sub.1D.sub.1=A.sub.2D.sub.2=D.sub.1B.sub.2=MB.sub.2=D.sub.2B.sub.1=MB.sub.1, in such a way that decreasing the value of θ the first and the second element rotate with respect to each other about an axis z orthogonal to the plane π and passing through the center O in the direction for which the point A.sub.1 is overlapped to the point B.sub.2.

A hemiplegic forearm function recovery training device includes a forearm mounting part (2) on which a forearm (S) is to be mounted. The forearm mounting part (2) includes a mounting body (20), an inner frame portion (2B), an outer frame portion (2A), and a control part. The mounting body (20) has a forearm fixing portion (22) on which the forearm (S) is mounted and a gripping mechanism (23) capable of being gripped by a hand of the forearm (S). The inner frame portion (2B) is fitted to the mounting body (20) and is rotatable around the forearm (S). The outer frame portion (2A) guides the inner frame portion (2B) in a rotation direction thereof. The control part performs a series of controls that repeatedly causes normal rotation, stop, reverse rotation, and stop of the inner frame portion (2B) while acquiring rotation angle information of the inner frame portion (2B). In the normal rotation the control part controls angular velocity or acceleration of the inner frame portion (2B) to stimulate a training target muscle of the forearm (S) and in the reverse rotation the control part provides resistance to the inner frame portion (2B) to sustain stimulation to the training target muscle to maintain muscle tone.

An apparatus (10) for the rehabilitation, assistance and/or augmentation of arm strength in a user (U) comprises a support arrangement (12) for supporting the apparatus (10) on the user (U), a linkage arrangement (14) coupled to the support arrangement (12) and for coupling to an arm (A) of the user (U), and an actuation arrangement (16) for operating the linkage arrangement (14) and thereby manipulating the user's arm (A) in response to a user input signal.

A wearable apparatus for assisting muscular strength includes a back support, and a connection chain having a first end portion coupled to the back support to be rotatable upward or downward. The connection chain extends from the back of the wearer to a side thereof and includes a plurality of rotary elements arranged abreast laterally, each rotary element being rotatably coupled to an adjacent rotary element laterally. The wearable apparatus further includes an upper arm module that extends in a direction in which an upper arm of the wearer extends, one end portion of the upper arm module coupled to a second end portion of the connection chain to be rotatable upward or downward with respect to the one end portion. The upper arm module generates a rotational force for rotating the upper arm of the wearer upward or downward.