Universal splint

DETAILED DESCRIPTION I claim: 1.
An improved universal splint comprising: a back board that includes a transverse elongate opening therein; means for releasably securing said back board to a human torso; an upper hinge unit consisting of first and second plates that are connected together along edges thereof by a single hinge; a back board pivot arranged in said transverse elongate opening and connected to said first plate of said upper hinge unit; an upper extremity board that is connected by a pivot to said second plate of said upper hinge unit, which upper extremity board includes a center longitudinal opening formed therein; a lower hinge unit that, like said upper hinge unit, includes first and second plates, and includes with said first plat thereof a pivot that is arranged in said center longitudinal opening in said upper extremity board; a lower extremity board that is connected by a pivot to the second plate of said lower hinge unit; means for releasably locking said first and second plates of said upper and lower hinge units relative to one another; lock means arranged with each said pivot for releasably maintaining the pivotally connected members relative to one another; and means for releasably securing said splint to a person's extremity.
2.
An improved universal splint as recited in claim 1, wherein the back board is wieder across the area wherein said transverse elongate opening is formed.
3.
An improved universal splint as recited in claim 1, wherein the first and second plates of the upper and lower hinge units and the upper and lower extremity boards are formed to accommodate a person's extremity thereon.
4.
An improved universal splint as recited in claim 1, wherein the means for locking in place said first and second plates of each upper and lower hinge unit each consist of, hinge halves each having fingers that interdigitate and align holes formed therethrough; a sleeve that has been internally threaded from an open end thereof that is fitted into said aligned openings formed through said fingers of each hinge; and a threaded bolt fitted also into said aligned openings that is turned into said sleeve to compress said hinge fingers together