Abstract: A muscle-powered pump to assist the natural heart is disclosed. The device comprises an oblate, spheroidal-shaped pumping chamber surrounded by innervated muscular tissue. The device may be coupled to the ventricle and descending aorta with valves and be stimulated in synchrony with the natural depolarization of the heart or the device may be inserted into the descending aorta and used as a counter pulsation device. In this application, the innervated muscle is stimulated after a brief delay from the natural cardiac depolarization.

Abstract: A three-dimension or stereo television viewing system is disclosed which multiplexes alternate left-right image presentations from two television cameras which are separated horizontally and aimed so that their optical axes intersect. One field of the standard interlace frame is selected from the left-hand camera and multiplexed but the alternate field from the right-hand camera with the multiplexed video frame being displayed on the standard television monitor. An electrically controlled viewer is provided for each user which employs electro-optic shutter lenses which are caused to switched in synchronisims with the alternating television fields. Direct connection between the viewers and the rest of the system is eliminated by the provision of a photoemitting and photodetection system in which coded pulses from the photoemitters are utilized by the photo detectors to operate the lenses of the stereo viewers in synchronism with the TV fields.