Abstract: A folding walker is formed in an X-shaped rear body having a pair of tubular frames. The frames are pivotally mounted on a pivot joint. Wheels are attached to the lower end of the body. A front leg is hingedly connected to the pivot joint so that the front leg is collapsible toward the legs and forms a tripod with the rear legs. Handle structures are adjustable to a desired height and angle. A brace is for locking the walker into unfolded position and unlocking the walker into folded position. A brake system shows that applying either of brake levers attached on the handle or both enables the brake shoes onto the wheels simultaneously.

Abstract: Disclosed herein is an orthopedic knee joint brace, which permits smooth knee exercise, increases the durability of a spring, and ensures structural rigidity in a shock absorbing operation. To this end, the orthopedic knee joint brace includes an upper cuff assembly (100) having an anatomical shape of a thigh to support the thigh, and a lower cuff assembly (200) provided under the upper cuff assembly and spaced apart from the upper cuff assembly. The orthopedic knee joint brace includes a pair of damping pivot assemblies (300) coupling facing ends of both sides of the upper and lower cuff assemblies to each other. Each of the damping pivot assemblies has a multiple pivot link structure and a guide damping structure to correspond to the movement of the knee joint.

Abstract: An orthopedic brace of a knee joint is disclosed. The orthopedic brace including a hinge assembly connecting a lower support member and an upper support member to have a certain relative angle, wherein the hinge assembly includes a first link hinged to an upper portion of the lower support member and a lower portion of the upper support member, a second link hinged to the lower support member at a position spaced from the first link and having a linear slit and a curved slit spaced from the linear slit, a first hinge connecting the lower support member to the second link, a second hinge connecting the lower support member to the first link, a third hinge connecting the upper support member to the first link and slidably coupled to the linear slit, and a rotation connector coupled to the upper support member and slidably coupled to the curved slit.

Abstract: Disclosed herein is an orthopedic knee joint brace, which permits smooth knee exercise, increases the durability of a spring, and ensures structural rigidity in a shock absorbing operation. To this end, the orthopedic knee joint brace includes an upper cuff assembly (100) having an anatomical shape of a thigh to support the thigh, and a lower cuff assembly (200) provided under the upper cuff assembly and spaced apart from the upper cuff assembly. The orthopedic knee joint brace includes a pair of damping pivot assemblies (300) coupling facing ends of both sides of the upper and lower cuff assemblies to each other. Each of the damping pivot assemblies has a multiple pivot link structure and a guide damping structure to correspond to the movement of the knee joint.

Abstract: The present invention relates to a multi-wavelength laser diode, in which an oscillating structure includes a semiconductor substrate, and a lower cladding layer, an active layer and a ridge formed in their order on the semiconductor substrate. A first metal layer is formed on a first face of the oscillating structure including one end of the ridge, and made of a metal having a high reflectivity in a first wavelength range of at least a predetermined wavelength. A second metal layer is formed on the first metal layer, the second metal layer being made of a metal having a high reflectivity in a second wavelength range under the predetermined wavelength. The multi-wavelength laser diode can improve-the reflective layer structure to achieve a high reflectivity in the entire visible light range.