Abstract: For limiting the maximum radiation intensity of a radiation source, in particular a laser, a transparent breakdown cell (4, 10, 17) with defined breakdown threshold value is placed within the ray path of the radiation source (2, 8, 15).

Abstract: An adapter is disclosed which is suitable for connecting a light guide end piece to a coupling device of a light source of high intensity, particularly of a medical laser apparatus. The adaptor has a first section 2 which can be fixed in the coupling device 11 as well as a second section 3 which can be axially slid with respect to the first section 2. The second section 3 carries an input lens system 4 and, when the light guide end piece 20 is pushed in, is axially displaced from the first I to a second II position and locked there. Safety devices of the laser apparatus which prevent a start of the operation without any inserted light guide are switched only in the second position II.

Abstract: A device for allowing the adjustment of the length of a fiber optic waveguide is disclosed. The device couples casings of different inner and outer diameters together, while allowing for the movement of the fiber optic waveguide within the casings. The device is useful for adapting the fiber optic guide to different instruments, such as endoscopes.

Abstract: A radiation coagulator with a radiation source which has a large infrared content and with a sleeve-shaped cap which is placed on the holding tube at the radiation exit end of the light conductor, and with which the area of the tissue to be coagulated is brought into contact.

Abstract: The disclosure relates to an application part for rigid or flexible endoscopes having a viewing channel and a working channel extending parallel to the viewing channel, with the working channel being equipped with a guide as well as a defined stop for a fiber optic waveguide, which can be inserted and coupled with a laser light source, and the working channel having optics for concentrating the laser light emerging from the fiber optic waveguide onto a punctiform area. The part of the working channel surrounding the punctiform area is formed as shock wave reflector. Further, a flushing channel is provided, the outlet opening of which is at least partially directed onto the face of the optics from which the light emerges.

Abstract: A detachable connection between a light-guide fiber and a laser suited particularly for medical purposes comprises two coupling elements. In the light exit opening of the first coupling element an optical coupling system is arranged which is connected to the former and can be adjusted parallel and/or perpendicularly to the optical axis. The first coupling element comprises a device for generating an axial force on the second coupling element. Between the first and second coupling elements, contact surfaces with high thermal conductvity are provided, by means of which heat is transferred in the coupled condition from the second coupling element to the first coupling element.

Abstract: A light guide, particularly for medical instruments with a light guide fiber, which is surrounded, if needed, by a protective jacket, a sleeve which surrounds the light guide fiber at a distance therefrom and consists of one or several tubes and a feeding unit on one side of the light guide for the feeding of light radiation into the light guide fiber. The light guide fiber and a tube of the sleeve are mounted in the feeding unit, while the other end of the light guide fiber is mounted in the tube of the sleeve. A length compensating element that can change its length axially but is largely not expandable radially, is set in the sleeve to prevent stresses acting longitudinally on the sleeve and light guide fiber due to bending, especially during the coiling of the light guide fiber.

Abstract: For operating a laser at different wavelengths, at least one of the two mirrors of the oscillator is subdivided into two or more regions with different spectral reflectivity, where each region reflects only one of the emission wavelengths of the laser medium and is largely permeable for the remaining emission wavelengths. Each such region can be inserted separately into the ray path of the laser.

Abstract: A connector for coupling a medical laser tool to a laser has a housing with coupling fitting at one end which is plugged into a laser receptacle and with a light conductor cable connection at the other end. The light conductor cable in turn is connected to the laser tool. The coupling fitting includes, in addition to the optical coupling element, heavy and light duty electrical contact members for an electrical power and data transmission and a gas conduit coupling for a gas transmission through the connector.

Abstract: The present infusion pump has a housing with an insert in the housing which s closed by a cover. The insert has a bore defining the pump volume. The insert also defines passageways and at least one chamber in the pump. One of two membranes is held between the insert and the pump housing and forms an inlet valve. The other membrane is arranged between the insert and the cover and forms the pump membrane proper as well as an outlet valve. Normally, in the rest condition of the pump, a magnetic drive member urges a pressure element against the pump membrane and against the inlet valve membrane contrary to the force of a spring. In operation, the spring opens the inlet valve thereby also actuating the pump membrane for its suction stroke. The magnetic drive member returns the pump membrane and the inlet valve back into the rest position thereby actuating the pump membrane for its pressure stroke while closing the inlet valve.