Patent ID: 8758436
Filing Date: 2014-06-24
Classification: A61B,A61F,A61H,A61M

Abstract:
1. A prosthesis adapted to be inserted into an ear canal for supporting a joint between a mandible and a corresponding temporal bone, the ear canal having an entrance and an isthmus located at a position remote from the entrance, the prosthesis comprising: a cylindrical deformable body including a sound transmission channel extending the length of the deformable body and an outer wall defining an outer circumference of the deformable body, the sound transmission channel being exposed to view from the entrance of the ear canal when the deformable body is positioned within the ear canal, the deformable body comprising a body temperature sensitive foam made from a material that is adapted to reversibly expand and contract upon application and removal of body heat in the ear canal, a retraction element having a first end coupled to the prosthesis and an opposite free end, the first end being spaced apart from the sound transmission channel and the free end residing outside of the ear canal when the prosthesis is inserted into the ear canal, the retraction element configured to be grasped by a wearer to remove the prosthesis, and at least one expansible endoskeleton frame having a ring structure entirely embedded within the deformable body, the expansible endoskeleton frame being disposed radially outward from and coaxially around the sound transmission channel and radially inward from the outer wall, the deformable body having a length adapted to extend between the entrance and the isthmus of the ear canal, the body temperature sensitive foam being adapted to expand and take on enhanced rigidity in the ear canal upon application of body heat such that the deformable body conforms in pressing relation against the walls of the ear canal thereby holding open the ear canal and supporting the joint, the expansible endoskeleton frame defining an outer diameter when the expansible endoskeleton frame is expanded, and the outer diameter of the expansible endoskeleton frame being greater than an outer diameter of the retraction element.