Patent ID: 8915828

Claim:
An ergonomic rotational muscle stretching device for stretching, strengthening and increasing flexibility of one or more muscles groups of a healthy individual and a patient recovering from muscle injury or surgery as well as facilitating muscle recovery in the patient, without placing negative stress and/or strain on associated joints of the one or more muscle groups, comprising: a center rod having a first end, a second end, and an interior opening therein, said interior opening having threads therein; a first handle and a second handle, each of said first and second handles having a first end and a second end, each of said first and second ends having an opening therein, said openings having threads therein; and a first linear bearing and a second linear bearing, each of said first and second linear bearings having a socket end and a ball end, said socket end having a first side and a second side, said ball end having a first side and a second side, said first side of the socket end having an opening therein which accepts the second side of the ball end inserted therein, said second side of the socket end comprised of a socket end bolt, said first side of the ball end comprised of a ball end bolt, wherein the first socket end bolt threadably inserts into the interior opening of the first end of the center rod and the second socket end bolt threadably inserts into the interior opening of second end of the center rod, wherein the first ball end bolt threadably inserts into the interior opening of the first end of the first handle and the second ball end bolt threadably inserts into the interior opening of the first end of the second handle, wherein the first and second linear bearings have a flexible covering which protects the linear bearings, said flexible covering made from materials selected from rubber and plastics, wherein the first and second linear bearings allow the first and second handles to rotate 10 degrees to 75 degrees on an x and y axis, and rotate 360 degrees on a z axis, wherein the first and second linear bearings allow a user to achieve a symmetrical and full range of motion of joints corresponding to muscles being exercised.