Abstract: A blood treatment system with pressure sensors may be configured to control blood flow to and from the patient and use readings of the pressure sensors to determine a change in a pressure drop across a flow restriction in the blood circuit to estimate a condition of the machine or the patient, or outputting data responsive to the estimation. Further embodiments employ measurement of pressure drop to detect abnormal viscosity or viscosity variations in order to detect possible infection.

Abstract: A photographic film cartridge for a camera with a compact configuration and that may use standard 35 mm film is disclosed. A light-sensitive medium, such as photographic film, is positioned therein. The light-sensitive medium may be separate individually stacked photographic film frames, a fan folded photographic film strip or individual film frames residing on a film carrier web. When individual frames are used, they may be assembled into a continuous strip configuration for development using standard photographic equipment. The cartridge includes a housing with a light exposure window and an exposure region in front of said light exposure window and a storage region not in front of said light exposure region. Opaque material is provided to block passage of light through said light exposure window in a closed position while permitting passage of light through said light exposure window in an open position. The opaque material is movable between an open position and a closed position.

Abstract: A card camera with a compact configuration and that may use standard 35 mm film is disclosed. The camera includes a front panel and a rear panel positioned substantially parallel and co-extensive to the front panel. A band of resilient material extends approximately from the outer edge of the front panel to the outer edge of the rear panel. The rear panel is controllably movable relative to the front panel. An outer housing sheet member includes a number of strut members extending therefrom. The outer housing sheet member is affixed to the exterior side of the front panel. The strut members engageable with the rear panel to fix the rear panel a distance away from the front panel to obtain the proper focal length. A light-sensitive medium, such as photographic film, is positioned therein. A shutter controls the light imparted to the light-sensitive medium. The light-sensitive medium is exposed to a scene through the lens.