Abstract: An optical instrument, in particular an endoscope, has a shaft and an inter-changeable head. The interchangeable head is detachably connected to the distal end of the shaft at a coupling point. The instrument also has a first transmission system for distal transmission of illuminating power, and a second transmission system for proximal transmission of image information, the first transmission system and the second transmission system passing through the coupling point. The interchangeable head and/or the coupling point are/is designed in such a way that upon loosening of the interchangeable head image information of perceptively modified quality is transmitted by the second transmission system.

Abstract: An optical instrument, in particular an endoscope, has a shaft and an interchangeable head. The interchangeable head is detachably connected to the distal end of the shaft at a coupling point. The instrument also has a first transmission system for distal transmission of illuminating power, and a second transmission system for proximal transmission of image information, the first transmission system and the second transmission system passing through the coupling point.

Abstract: An endoscope for inspection of an observation cavity, in particular of an observation cavity in which a hot medium and/or infrared radiation is present, has a shaft in which an optical system is arranged. The shaft has an inner shaft and an outer shaft surrounding the latter at a distance, the optical system being arranged in the inner shaft. The shaft is configured in the region of its distal end in such a way that it is substantially opaque to electromagnetic radiation in the infrared spectral range.

Abstract: An exchangeable tool assembly is provided for an endoscopic treatment device, comprising a flexible shaft connected at its distal end to a tool unit and at its proximal end to a coupling element for coupling the tool assembly to a motor of the treatment device. The flexible shaft transmits a rotary movement of the motor to the tool unit. The flexible shaft is connected to said tool unit such that said flexible shaft and said tool unit form a jointly exchangeable unit. Further, a locking mechanism for releasably holding said tool assembly at said treatment device comprises a locking element arranged at said tool unit and a locking member arranged at said treatment device which is engageable in said locking member to releasably hold said unit formed by said tool unit and said flexible shaft at the treatment device, which can be withdrawn as a whole after this engagement of said locking member from said locking element.

Abstract: A lighting system for illumination of an observation space, especially an observation space in which a pressurized and/or hot medium is contained, comprises an optical-fiber cable, one end of which can be connected to a light source, and a lighting head, which is connected to the other end of the optical-fiber cable and whose distal end can be introduced into the observation space through an opening in a wall enclosing the observation space. The lighting head comprises a light guide rod made from a pressure and/or temperature-resistant material.

Abstract: An endoscope for inspection of an observation cavity, in particular of an observation cavity in which a hot medium and/or infrared radiation is present, has a shaft in which an optical system is arranged. The shaft has an inner shaft and an outer shaft surrounding the latter at a distance, the optical system being arranged in the inner shaft. The shaft is configured in the region of its distal end in such a way that it is substantially opaque to electromagnetic radiation in the infrared spectral range.

Abstract: An endoscope is provided having a shaft and a handle extending to the side of the shaft at the proximal end. A mechanism is provided for pivoting the view direction in an observation area and has at least one operating element being engaged with the mechanism for actuating the mechanism. The at least one operating element is positioned on the handle, such that the mechanism is actuatable with at least one finger or thumb of the same hand holding the handle.

Abstract: An exchangeable tool assembly is provided for an endoscopic treatment device, comprising a flexible shaft connected at its distal end to a tool unit and at its proximal end to a coupling element for coupling the tool assembly to a motor of the treatment device. The flexible shaft transmits a rotary movement of the motor to the tool unit. The flexible shaft is connected to said tool unit such that said flexible shaft and said tool unit form a jointly exchangeable unit. Further, a locking mechanism for releasably holding said tool assembly at said treatment device comprises a locking element arranged at said tool unit and a locking member arranged at said treatment device which is engageable in said locking member to releasably hold said unit formed by said tool unit and said flexible shaft at the treatment device, which can be withdrawn as a whole after this engagement of said locking member from said locking element.

Abstract: An endoscope is provided having a shaft and a handle extending to the side of the shaft at the proximal end. A mechanism is provided for pivoting the view direction in an observation area and has at least one operating element being engaged with the mechanism for actuating the mechanism. The at least one operating element is positioned on the handle, such that the mechanism is actuatable with at least one finger or thumb of the same hand holding the handle.

Abstract: A pressure container for applying pressure to a flexible bag received in it and filled with a medical fluid, in order to deliver the fluid from the flexible bag, has a housing that has an opening for introduction of the bag. Also provided are a cover for covering the opening, an aperture for leading a fluid discharge line of the bag out of the pressure container, and a closure for sealed joining of the cover and housing. In the interest of simpler design and easier handling, it is proposed that the housing be configured as an upright hollow-cylindrical body, closed at the bottom and open at the top, the cross section of which has a flattened oval shape and corresponds roughly to the cross-sectional contour of a bag; and that the two opposing large-area upright sidewalls each have, in mirror-image fashion, the shape of a segment of a cylindrical shell whose lateral ends are joined by joining segments.