Abstract: The invention relates to an implantable infusion pump comprising a housing, a base plate, a propellant chamber, a bellows having an internal volume for receiving a medicament to be administered to a patient, a constriction segment leading to a catheter placed in the body of the patient and communicating with the bellows internal volume, a resonant circuit formed by a coil, and a capacitor detecting the distance between a bottom surface of the bellows and the base plate. The coil is mounted on or in a bottom surface of the base plate and pointing towards the bellows bottom surface such that an inductance of the coil and a resonant frequency of the resonant circuit is a function of the distance between the bellows bottom surface the base plate.

Abstract: The invention relates to an implantable infusion pump comprising a housing, a base plate, a propellant chamber, a bellows having an internal volume for receiving a medicament to be administered to a patient, a constriction segment leading to a catheter placed in the body of the patient and communicating with the bellows internal volume, a resonant circuit formed by a coil, and a capacitor detecting the distance between a bottom surface of the bellows and the base plate. The coil is mounted on or in a bottom surface of the base plate and pointing towards the bellows bottom surface such that an inductance of the coil and a resonant frequency of the resonant circuit is a function of the distance between the bellows bottom surface the base plate.

Abstract: A heart valve prosthesis with a valve ring and at least one substantially elongated wing valve pivotally mounted about an axis located in the plane of the valve ring, in which the bearings of the wing valve or valves are in each case formed by a swivel pin, defining the swivel axis and fixed to the valve ring, a groove constructed in the wing valve and extending therethrough transversely to the axis and whose width corresponds to the diameter and whose depth corresponds to the length of the swivel pin, a first guide pin fixed to the valve ring, a first, convex slide cam constructed on the wing valve and which cooperates with the first guide pin, a second guide pin fixed to the valve ring and a second, convex slide cam constructed on the wing valve and which cooperates with the second guide pin, the spacing from one another of the two slide cams measured over the imaginary connecting line between the centers of the guide pins, in each position of the wing valve, corresponds to the internal, mutual spacing of t

Abstract: An improved implantable infusion pump comprises a propellant chamber, a medicament chamber, and a throttle section. Enclosed within the throttle section is a medicament delivery system comprising a chip having a fluid path etched in an upper surface, inlet and outlet depressions formed in the chip lower and upper surfaces respectively, and a channel formed through the chip connecting the inlet with the fluid path. A planar cover, preferably transparent, covers the chip upper surface. A pair of wafers surround the chip within the throttle section and pair of silicon coatings are positioned between the chip and the pair of wafers. Various bores, apertures, and recesses are formed in the wafers, the cover, and the coatings, for permitting the medicament fluid to pass through the throttle section. An alternate embodiment employs a plurality of fluid paths and a plurality of outlets permitting different throttle resistance.

Abstract: The invention concerns the elimination of the image steadiness error in the projection of films, which consist of individual images.For this purpose, the image steadiness error is detected by a sensor and is compensated for by a device for step size compensation.An apparatus for the measurement of the image position in the projection films which consist of individual images has a sensor for the measurement of the image steadiness error by making use of the perforation.In a device for the correction of an image steadiness error of films which consist of individual images, an optical compensator is arranged before the films as an optical storage medium and/or before the optical photography medium.