Abstract: A phototherapy device for treating neonatal hyperbilirubinemia comprises a plurality of LEDs coupled to a support structure configured to absorb and dissipate heat generated by the LEDs without requiring a fan. The LEDs provide a uniform dose of radiation on a treatment surface of the subject over a distance range of 20 cm to 45 cm. The support structure can comprise a heat-conductive metal plate. The LEDs have an emission range of 400 nm to 520 and a light output intensity of at least 30 ?W/cm2/nm and at most 65 ?W/cm2/nm at the treatment surface. The device can be adjustably coupled to a mounting structure. Power supplied to the LEDs is adjustable based on the total number of hours of use of he LEDs, the intensity of the LED radiation, the distance between the LEDs and the treatment surface, and/or the tilt or orientation of the phototherapy device.

Abstract: An above knee prosthesis comprises an upper block, a lower block, a middle linkage pivotably coupling the middle posterior regions of the upper and lower blocks together, and at least one side linkage pivotably coupling the sides of the upper and lower blocks together. The center of rotation of the prosthesis is located above the prosthesis when it is in full extension and moves downward as the prosthesis rotates into full flexion. When the prosthesis is in use and in full extension, a majority of the weight of the patient borne by the prosthesis is directly transferred from the upper block to the lower block. A bumper disposed between the upper and lower blocks will typically be provided to absorb shock and dampen noise when the prosthesis is in extension. A leaf spring may be provided to bias the prosthesis to be in extension.

Abstract: The present disclosure relates to a concentrator, particularly a terrestrial solar concentrator to harness the sun's energy, and a tracking system. The concentrator includes a parabolic or other curved reflective surface and an absorber positioned at the focus of the curved reflective surface. Parabolic ribs give shape to the reflective surface. The tracking system includes a rotating, swiveling, or pivoting joint. One or more cables attach to the tracking system. Selectively applying tension to the cables causes the tracking system to rotate, swivel, or pivot at the joint to track an object.