Abstract: The disclosure relates to a system and a method for monitoring the state of optical elements of a device for laser material processing. According to the present disclosure a detailed monitoring of the state of optical elements of a device for laser material processing takes place by monitoring properties of laser radiation in the direction of an optical fiber or laser radiation entering a laser processing head connected to the laser source and these measurements, which can be performed during the processing process. The device according to the present disclosure has optical sensors for measuring the intensity and respective current laser power.

Abstract: A hydraulic drive for a hydraulic consumer alternately pressurized in opposite directions during operation is disclosed.

Abstract: An electromagnetic actuator for a medical instrument including: a stator; and a movable element, at least partly composed of a paramagnetic and/or a ferromagnetic material, and which can be reversibly moved from a first to a second position by the application of a switchable magnetic field, wherein the stator and the movable element have annular distal and proximal pole shoes corresponding to each other, wherein the distal pole shoes and/or the proximal pole shoes of the stator and the movable element are aligned with each other in an overlapping manner in the first and/or the second position, and the distal pole shoes and/or the proximal pole shoes of the stator and the movable element have a structure in the circumferential direction on the surfaces of pole shoes facing each other, with the structures corresponding to each other.

Abstract: A combined ultrasonic and surgical system, a control device for controlling such a combined ultrasonic and surgical system and a method for operating a combined ultrasonic and surgical system. The system includes an ultrasonic generator having a generation unit for providing an excitation signal by which an ultrasonic converter can generate an ultrasonic vibration, a generator for providing an energy at two output contacts, and a control unit adapted to control the ultrasonic generator and/or the generator, such that the excitation signal and the energy are provided in a coordinated fashion, such that the energy is provided in dependency of the excitation signal, wherein an energy is modulated with the frequency of the excitation signal or with a harmonic of that frequency.

Abstract: A method for rinsing endoscope channels of an endoscope with a rinsing agent from a rinsing agent supply. The method including: connecting a first endoscope channel to the rinsing agent supply via a first rinsing agent distributor, which has a testing device for checking an endoscope channel for a blockage; connecting at least one other endoscope channel to the rinsing agent supply via a second rinsing agent distributor; and checking the first endoscope channel for a blockage using a testing device and simultaneously rinsing the at least one other endoscope channel with rinsing agent from the rinsing agent supply. A device is also provided for rinsing endoscope channels of an endoscope with rinsing agent from a rinsing supply.

Abstract: A stereo endoscope having an elongated shaft and a sensor unit comprising two flat image sensors that are symmetrically arranged about a central rotational axis of the shaft. With such stereo endoscope, a lateral direction of view of the stereo endoscope which deviates from a central 0° direction of view can be variably adjusted and/or changed independent of an orientation of the image sensors relative to each other.

Abstract: A shut-off valve for the liquid channel of a surgical instrument with a plug which is rotatably mounted and includes a cone part located in the front that includes a cone surface and a handle part located in the rear that includes a handle, wherein the liquid channel passes through the cone part, the cone surface and the housing, wherein the cone part and the handle part are mounted displaceably in the direction of the cone axis and non-rotatably against each other and supported by a spring, wherein the handle part is supported to the rear on the housing and the cone part is supported to the front with a flat contact of the cone surface on the housing, characterized in that a radially outwards or inwards projecting rear pin engages in a rear circumferential groove arranged on the housing or the handle part.

Abstract: An electromagnetic actuator for a medical instrument. The electromagnetic actuator including: a stator; a movable element, which at least partially comprises one or more of a paramagnetic and ferromagnetic material and which is movable from a first position to a second position by the application of an electromagnetic field, and a tube movably supporting the movable element in such a way that the movable element is longitudinally movable, wherein the tube comprises a ferromagnetic material.

Abstract: An electromagnetic actuator for a medical instrument including: a stator; and a movable element, at least partly composed of a paramagnetic and/or a ferromagnetic material, and which can be reversibly moved from a first to a second position by the application of a switchable magnetic field, wherein the stator and the movable element have annular distal and proximal pole shoes corresponding to each other, wherein the distal pole shoes and/or the proximal pole shoes of the stator and the movable element are aligned with each other in an overlapping manner in the first and/or the second position, and the distal pole shoes and/or the proximal pole shoes of the stator and the movable element have a structure in the circumferential direction on the surfaces of pole shoes facing each other, with the structures corresponding to each other.

Abstract: A method for rinsing endoscope channels of an endoscope with a rinsing agent from a rinsing agent supply. The method including: connecting a first endoscope channel to the rinsing agent supply via a first rinsing agent distributor, which has a testing device for checking an endoscope channel for a blockage; connecting at least one other endoscope channel to the rinsing agent supply via a second rinsing agent distributor; and checking the first endoscope channel for a blockage using a testing device and simultaneously rinsing the at least one other endoscope channel with rinsing agent from the rinsing agent supply. A device is also provided for rinsing endoscope channels of an endoscope with rinsing agent from a rinsing supply.

Abstract: The invention provides a process for depositing metallic layers from acidic or alkaline zinc or zinc alloy baths containing organic additives selected from brighteners, surfactants and complexing agents, a soluble zinc salt and optionally further metal salts selected from Fe, Ni, Co, Sn salts, wherein the bath can be purified continuously so that the process can be operated without interruption, as well as apparatus for carrying out this process.

Abstract: A stereo endoscope having an elongated shaft and a sensor unit comprising two flat image sensors that are symmetrically arranged about a central rotational axis of the shaft. With such stereo endoscope, a lateral direction of view of the stereo endoscope which deviates from a central 0° direction of view can be variably adjusted and/or changed independent of an orientation of the image sensors relative to each other.

Abstract: The invention relates to a method for producing a coating layer protecting against corrosion wherein a surface which is to be treated is brought into contact with an aqueous treatment solution containing chromium(III) ions and at least one phosphate compound, wherein the ratio of the molar concentration of the chromium(III) ions to the molar concentration of the at least one phosphate compound (calculated as orthophosphate) lies between 1:1.5 and 1:3. The method improves the corrosion protection of metallic, in particular, zinc-containing, surfaces provided with conversion layers. The decorative and functional properties of the surface are maintained or improved. Furthermore, the known problems resulting from the use of chromium(VI)-containing compounds or from post-treatments with polymer dispersions are avoided.

Abstract: For producing corrosion resistant yellow passivate layers on zinc and zinc alloy surfaces, an aqueous reaction solution is utilized that contains trivalent chromium ions, at least one acid as well as at least one heteroaromatic compound selected from the group comprising nicotinic acid, the salts and derivatives thereof.

Abstract: The invention relates to a process for producing a coating layer which protects against corrosion, in which a surface to be treated is brought into contact with an aqueous treatment solution containing at least one source of chromium(III) ions and also at least one organic compound which oxidizes zinc in weakly acidic or acidic solution. Here, the decorative and functional properties of the surface are retained or improved. In addition, the known problems associated with the use of chromium(VI)-containing compounds are avoided.

Abstract: A dielectricity measurement device and method for determining dielectric properties of portioned material of a capsule end package with the aid of an electrical field is described, where the device receives an electrically conductive package wall of the capsule end package as a component of the measurement arrangement and where the device maybe arranged into a series measurement device having several such dielectricity measurement devices.

Abstract: The invention relates to a method for producing a coating layer protecting against corrosion wherein a surface which is to be treated is brought into contact with an aqueous treatment solution containing chromium(III) ions and at least one phosphate compound, wherein the ratio of the molar concentration of the chromium(III) ions to the molar concentration of the at least one phosphate compound (calculated as orthophosphate) lies between 1:1.5 and 1:3. The method improves the corrosion protection of metallic, in particular, zinc-containing, surfaces provided with conversion layers. The decorative and functional properties of the surface are maintained or improved. Furthermore, the known problems resulting from the use of chromium(VI)-containing compounds or from post-treatments with polymer dispersions are avoided.

Abstract: A dielectricity measurement device and method for determining dielectric properties of portioned material of a capsule end package with the aid of an electrical field is described, where the device receives an electrically conductive package wall of the capsule end package as a component of the measurement arrangement and where the device maybe arranged into a series measurement device having several such dielectricity measurement devices.

Abstract: The invention relates to a method for reducing the carbon dioxide concentration in air of a closed or partially closed unit of space. The inventive method may comprise the steps of removing an air flow from the unit of space, guiding the air flow in a membrane system that may contain at least one membrane module having a CO2/O2 selectivity of greater than 2, removing the carbon dioxide permeated through the membrane, and returning the air flow that has been depleted of carbon dioxide in the membrane system to the unit of space. The inventive method may be optionally combined with an oxygen enrichment method. The invention also relates to corresponding devices for carrying out the inventive method.

Abstract: The invention provides a process for depositing metallic layers from acidic or alkaline zinc or zinc alloy baths containing organic additives selected from brighteners, surfactants and complexing agents, a soluble zinc salt and optionally further metal salts selected from Fe, Ni, Co, Sn salts, wherein the bath can be purified continuously so that the process can be operated without interruption, as well as apparatus for carrying out this process.