Abstract: Implantable access device for removal and/or return of fluids to a patient, comprising a casing attached to an internal conduit to be connected with a lumen of the patient; a connector attached at the casing and connected to an external conduit, and arranged for attachment of an extracorporeal lumen to the device; and an actuator unit within the casing to selectively allow or block the fluid communication between the internal conduit and the external conduit; the device further comprising a fixation unit integrated in or attached at the casing arranged for fixation of the device to a bone of the patient; wherein the fixation unit extends axially along the longitudinal axis of the device. The disclosed access device can be used for high volume removal and/or return of blood or other fluids from the patient.

Abstract: Implantable access device for removal and/or return of fluids to a patient, comprising a casing attached to an internal conduit to be connected with a lumen of the patient; a connector attached at the casing and connected to an external conduit, and arranged for attachment of an extracorporeal lumen to the device; and an actuator unit within the casing to selectively allow or block the fluid communication between the internal conduit and the external conduit; the device further comprising a fixation unit integrated in or attached at the casing arranged for fixation of the device to a bone of the patient; wherein the fixation unit extends axially along the longitudinal axis of the device. The disclosed access device can be used for high volume removal and/or return of blood or other fluids from the patient.

Abstract: A mirror mount for a resonator mirror of a gas laser which is cost-beneficial and simple to manufacture is composed of a tube of easily-workable material, for example steel, and a mirror receptacle that has a coefficient of thermal expansion matched to that of the mirror being supported in the receptacle. The mirror receptacle has a holding region that embraces the resonator mirror and has a spacer region that defines the minimum distance of the mirror from the end of the tube, whereby the mirror receptacle is deformable in a radial direction so that stresses caused by temperature fluctuations will not produce any damage to the mirror.

Abstract: In a gas laser having a capillary and a cathode that envelopes the capillary, a fastening of the cathode suitable for batch soldering is achieved in that the cathode is secured to an end piece having a mount for an optical element, and an end of the cathode facing away from the end piece is elastically supported against a housing wall with such a slight spring power that a weight of the unit formed of the cathode, end piece, and mount is adequate for overcoming the friction between the spring and the housing wall. Thus, the end piece with the attached cathode can slide into its final position during soldering solely on the basis of the force of gravity. The invention is particularly suited for helium-neon lasers that are manufactured in glass solder technology.

Abstract: In a gas laser having a capillary and a cathode that envelopes the capillary, a fastening of the cathode suitable for batch soldering is achieved in that the cathode is secured to an end piece having a mount for an optical element, and an end of the cathode facing away from the end piece is elastically supported against a housing wall with such a slight spring power that a weight of the unit formed of the cathode, end piece, and mount is adequate for overcoming the friction between the spring and the housing wall. Thus, the end piece with the attached cathode can slide into its final position during soldering solely on the basis of the force of gravity. The invention is particularly suited for helium-neon lasers that are manufactured in glass solder technology.

Abstract: A gas laser is provided having a cathode which is essentially tubularly designed and surrounds an end of a laser capillary which faces toward it. The cathode has a tube termination which serves the purpose of protecting tube parts situated there behind from the plasma of the laser. It surrounds a beam passage opening which insures that the laser beam can pass through in unattenuated fashion. This beam passage opening can be made smaller and the shielding can thus be improved since an extension of the mount for the optical elements of the laser projects into the interior of the laser, and the cathode is fixed to the extension at least in a radial direction. The invention is particularly suited for helium-neon lasers.