A massage unit includes a treatment member; an arm that supports the treatment member; a drive shaft that supports the arm and causes the treatment member to approach and be separated with respect to a treatment target site; a movable portion that causes the treatment member to be operable in a direction of being separated from the treatment target site when the treatment member comes into contact with the treatment target site by a force equal to or greater than predetermined strength; and biasing means for biasing the treatment member in an approaching direction.

An abdominal exercise device with a stable rolling platform, a pair of handles, and four roller assemblies. In addition to conventional roller exercises, the user may place toes or feet on the stable platform and push or pull the device. The device has attachment features on the handle and platform that permit one or more adjustable elastic cords to be temporarily attached to the exercise device while the device is pushed or pulled relative to the user's body. Variable resistance cords are provided which have a plurality of stop elements to permit the user to adjust the effective resistance of the elastic cords by temporarily securing selected stop elements to the device. In one example, the stop elements have internal tapered plugs and external tapered covers over the tapered plugs; so that the stop elements may nest in tapered receptacles on the device.

A plurality of ball transfer units is used together to form a reduced friction surface. The reduced friction surface lies on a base, and is particularly useful for carrying out a physical activity on, or applying force to, a body part on the surface so as to stretch the muscles and stretch and/or decompress the spine.

A sitting type spinal traction and disc massage apparatus includes a seat member, a seat pad disposed atop the seat member, a fixing member straddling the seat member and the seat pad and connected to the seat member to fix hips of a user to the seat member, and a moving backrest board disposed atop a rear end of the seat member. The moving backrest board is movable relative to the seat member. A restricting member straddles and is connected to the moving backrest board to fix the user's upper body to the moving backrest board. A lifting unit is disposed below the moving backrest board to move the moving backrest board upwardly from the seat member to stretch the user's spine. A vibrating unit is disposed within and vibrates the seat pad.

An amusement ride such as a roller coaster, more in particular to booster drives mounted on a track of such a ride, are disclosed. The booster drives each include at least one booster drive motor for driving booster wheels, and for engaging a drive fin of a passenger vehicle to propel that vehicle along the track. The booster drive further includes a base mounted to the track structure, a frame that supports the at least one booster drive motor and the two booster wheels, and a mobile carrier that connects the frame to the base via a left and a right carrier arm. These carrier arms are non-flexible arms pivotably connected to the base and the frame or they are flexible arms, such that in use they enable movement of the frame relative to the base. A biasing device resiliently forces the frame towards a predetermined position.

A wearable apparatus for assisting muscular strength includes: a main body mechanism extending in a vertical direction of a wearer's torso, and being fixed to a side of a wearer's torso under a wearer's shoulder; a fastening mechanism extending along an extension direction of a wearer's upper arm, and being disposed at and being in contact with a lower surface of the wearer's upper arm; a connecting mechanism having a first end coupled to the fastening mechanism and a second end movably coupled to the main body mechanism so as to be movable with respect to the main body mechanism; and a support mechanism movably coupled between the first end and the second end of the connecting mechanism to apply a support force to the connecting mechanism, and coupled to the main body mechanism and movable with respect thereto.

A stretching and exercising device is beneficial for torso flexibility, having a configurable structure in which the curvature of the platform is adjustable. The platform can be varied in curvature from a substantially flat configuration to a generally semi-circular configuration. The platform is supported by a gear train connected to the platform, wherein the platform has a plurality of discrete parts. An adjustment member having a manually adjustable variable length connects opposite ends of the gear train, so that the curvature of the platform is determined by the adjusted length of the adjustment member.

A sterile hand connection device is used to attach a patient's arm to a cable adaptor of a surgical arm positioning apparatus. The cable adaptor is connected to two cable ends of a cable of the surgical arm positioning apparatus. The hand connection includes a clip, a buckle, and a wrap that is mounted to the clip. The buckle is attached to the cable adaptor and the clip snaps onto the buckle. The hand wrap is mounted to the clip and wraps around a patient's hand, wrist, and forearm.

An orthosis for increasing range of motion of a body joint. The orthosis includes a rotational linkage mechanism having a driving link and a driven link configured for rotation about a joint axis. The driven link is selectively attachable to a body part to rotate the body part about the joint axis. A dynamic force mechanism is operatively connected between the driving link and driven link to impart a dynamic force upon the driven link when the driving link rotates relative to the driven link and the driven link resists rotation with the driving link due to a resistance force imparted on the driven link by the body part reaching a maximum range of motion. The dynamic force is transferred through the driven link to the body part.

A wrist and forearm exercise and rehabilitation device is disclosed. The device includes a base, a post extending vertically from the base, and a shaft rotatably inserted into the shaft. The shaft has a proximal end and a distal end. A biasing member has a first end attached to the shaft, such that rotation of the shaft exerts a force on the biasing member. A method of using the device is also disclosed.