Abstract: Novel tools and techniques for an appendage cooling and concussion assessment are provided. A system includes a cooling device comprising a cold side and a hot side, a cooling interface configured to be coupled to a patient appendage and to cool the patient appendage, a heatsink coupled to the hot side of the cooling device, one or more temperature sensors, and a controller in communication with the cooling device. The controller may be configured to cool, via the cooling interface, the patient appendage based on a temperature of at least one of the patient appendage or the cooling interface.

Abstract: A painting tool, with an internal paint reservoir that feeds paint to a roller in a relatively continuous fashion, is manipulated through an adjustable handle. The roller housing includes a pair of brackets defining a convex surface. The handle telescopically passes through the convex surface and is encircled by a ring which threads about the handle. The ring is cammed to move towards and away from the spherical surface on the roller housing, when the ring is rotated. Since the ring includes a concave surface, the translation of the ring with respect to the convex surface on the roller enables locking engagement to be attained between the handle and the roller housing. In this way the handle may be selectively fixed with respect to the roller in one of a plurality of relative angular orientations to facilitate painting.