A rotational structure is configured such that a hollow portion, in which a base member is opposed to a rotational member, is formed around a shaft member. An encoder provided in the hollow portion includes a detection target member rotated together with one of the rotational member and the base member and having a physical quantity changing in a circumferential direction, and a detector capable of detecting the physical quantity of the detection target element and rotated together with the other of the rotational member and the base member.

An actuator-damper unit for use in orthotic or prosthetic devices. The actuator-damper unit includes a housing which may be fastened on the orthotic or prosthetic device and in which a cylinder is formed. A first piston is displaceably mounted in the cylinder and is coupled to a piston rod. The piston rod is disposed, via a first end, on the first piston and may be coupled, via a second end, to the orthotic or prosthetic device. The first piston separates two fluid chambers in the cylinder from each other and forms a piston-cylinder unit, wherein at least one further piston is coupled to the first piston in order to form at least one further, variable-volume fluid chamber.

Exosuits that use core grip members are described herein. Core grip members apply forces in a radially inward manner from the exterior of the body to the interior of the body to provide support to the user and to serve as a platform for mounting power layer segments.

A joint device with an upper part and a lower part which are mounted on each other so as to be pivotable about a pivot axis, a hydraulic unit secured on the upper part and the lower part, and a housing in which a cylinder is arranged. A working piston is arranged in the cylinder and is coupled to at least one spring mechanism which transmits tensile forces and compressive forces and which engages on at least one abutment arranged displaceably inside the cylinder.

An assist device includes a first body-worn unit that is worn on at least shoulders or a chest of a user; a second body-worn unit that is worn on each of right and left legs or a waist of the user; a belt body provided to extend along a back side of the user, from the first body-worn unit to the second body-worn unit; an actuator provided in the first body-worn unit or the second body-worn unit and allows a part of the belt body to be reeled and unreeled; a battery configured to supply electricity to the actuator; and a controller configured to control the actuator. When a remaining charge level of the battery has decreased to a predetermined set value, the controller executes a vibrating motion process of causing the actuator to perform a vibrating motion of intermittently repeating reeling of a minute amount of the belt body.

An embodiment includes an exoskeleton robotic system including: a first linkage; a bearing coupled to the first linkage; a joint including a motor configured to move the first linkage along the bearing; an axial load sensor configured to sense an axial force transmitted to the axial load sensor via the joint, the axial force including one of tension or compression but not torque; a bracket including first and second bracket locations and first and second arms; and a housing that includes at least part of the joint and which couples the bracket to the bearing. The bracket couples to the housing at the first bracket location and couples to the axial load sensor at the second bracket location. The first arm couples the second arm to the first bracket location, and the second arm couples the first arm to the second bracket location.

A device is provided for manipulating an arm of a user, thereby providing extension or flexion assistance to the arm about an elbow. The device has an arm engagement system, having an upper arm member with an upper arm frame having a pivot end and a distal end, a posterior elbow pad, a forearm member with a forearm frame having a pivot end and a distal end and a distal wrist pad, and a pivoting connection operatively coupled with the pivot end of the upper arm frame and the pivot end of the forearm frame. A force application system having a force applicator is connected between the distal end and the pivot end of the forearm frame. A force application mechanism is connected at or near the distal end of the upper arm frame.

There is provided a dynamic and proactive system for supporting sitting while detecting and changing sitting postures of a user and method of operation thereof. The system including a frame, a plurality of supports, each configured to support a different body part, and a plurality of joints each configured to move independently of or together with any other of the joints, each of the supports is connected to the frame via a corresponding joint, at least one of the joints is a two dimensional joint which enables a change in angle between the frame and a corresponding support. Each one of the plurality of supports is configured to move with respect to the frame or to another support, thereby enabling any changes in sitting postures of the user. The system comprises sensors, which based on their readings, the system detects user postures and suggests or creates posture changes.

The inventive concept relates to an upper-limb rehabilitation robot that includes a finger exercise device that is mounted on the back of a patient's hand and that exercises a finger of the patient for rehabilitation, a wrist exercise device that is provided on a wrist of the patient and that exercises the wrist of the patient, and an upper-limb exercise device that is spaced apart from the wrist exercise device and that exercises an upper limb of the patient.

Provided is a wearable apparatus for assisting muscular strength including a first rotary member, a first side of which is located at an upper portion of a shoulder of a wearer and a second side of which is located at a back thereof, a second rotary member, a first side of which is coupled to the second side of the first rotary member and a second side of which moves upward and downward, a first connecting part, a first side of which is coupled to the second side of the second rotary member, and a second side of which is located at an outer side surface of the wearer, a third rotary member, a first side of which is coupled to the second side of the first connecting part, and a fourth rotary member, a first side of which is coupled to the second side of the third rotary member.