Abstract: A stopcock for a channel that guides a flux medium in a medical endoscope, the stopcock having a housing accommodating a plug rotatable about an axis in a conical seat penetrated by the channel, wherein the housing has a bearing collar adjacent to the conical seat in the direction of the axis, in which bearing collar a handle body is mounted to be rotatable about the axis, the handle body supporting a handle outside the housing and rotationally coupled to the plug displaceable in direction of the axis and resiliently supported relative thereto, wherein the handle body has a radially elastic detent device engaging a circumferential inner groove of the bearing collar to be locking in direction of the axis, wherein the plug is arranged and configured bring the detent device out of engagement with the bearing collar upon displacement in direction of the axis into an unlocked position.

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: A stopcock for a channel that guides a flux medium in a medical endoscope, the stopcock having a housing accommodating a plug rotatable about an axis in a conical seat penetrated by the channel, wherein the housing has a bearing collar adjacent to the conical seat in the direction of the axis, in which bearing collar a handle body is mounted to be rotatable about the axis, the handle body supporting a handle outside the housing and rotationally coupled to the plug displaceable in direction of the axis and resiliently supported relative thereto, wherein the handle body has a radially elastic detent device engaging a circumferential inner groove of the bearing collar to be locking in direction of the axis, wherein the plug is arranged and configured bring the detent device out of engagement with the bearing collar upon displacement in direction of the axis into an unlocked position.

Abstract: A surgical vaporization electrode (1) including an electrode head (2) which in turn is fitted with a functional surface (6) and which is connected at a minimum of one connection site (10) to a feed conductor (3) enclosed by an insulating sheath (4), is characterized in that the surface zone (7) of the electrode head (2) surrounding the connection site (10) is fitted with a ceramic covering (8).

Abstract: A urological resectoscope (1) includes a tubular, metallic external stem (2) fitted with holes (3) in its distal end zone, a tubular insulating element (7, 27, 37, 47) being affixed distally to the external stem, further comprising a tubular internal stem (8) configured within the external stem and resting against it in sealing manner and an electrode support (13) longitudinally displaceable inside the internal stem and supporting a cutting loop (15) in the region of the insulating element (7, 27, 37, 47), the inside space of the internal stem (8) and the gap (12) between the stems (2, 8) being proximally connected to liquid hookups (10, 11), the insulating element (7, 27, 37, 47) being configured in longitudinally mutually overlapping manner within an affixation zone (6) and the insulating element (7, 27, 37, 47) exhibiting a wall thickness distally from the affixation zone (6) larger than the wall thickness of the external stem (2), wherein the inside diameter of the insulating element (27, 47) is the same

Abstract: A urological resectoscope (1) includes a tubular, metallic external stem (2) fitted with holes (3) in its distal end zone, a tubular insulating element (7, 27, 37, 47) being affixed distally to the external stem, further comprising a tubular internal stem (8) configured within the external stem and resting against it in sealing manner and an electrode support (13) longitudinally displaceable inside the internal stem and supporting a cutting loop (15) in the region of the insulating element (7, 27, 37, 47), the inside space of the internal stem (8) and the gap (12) between the stems (2, 8) being proximally connected to liquid hookups (10, 11), the insulating element (7, 27, 37, 47) being configured in longitudinally mutually overlapping manner within an affixation zone (6) and the insulating element (7, 27, 37, 47) exhibiting a wall thickness distally from the affixation zone (6) larger than the wall thickness of the external stem (2), wherein the inside diameter of the insulating element (27, 47) is the same

Abstract: A resectoscope comprising a shaft that has an external tube and an internal tube. A lens system which has an angular field of view and can be rotated relative to the external tube along with the internal tube is disposed inside the internal tube. The distal end region of the internal tube is designed to slide in a sealed manner along the external tube. The external tube has holes in the distal end region proximal to the end region of the internal tube. The interior of the internal tube is connected as a supply duct while the intermediate space between the tubes is connected as a discharge duct. The disclosed resectoscope is characterized in that the holes are distributed along the circumference, while the internal tube is fitted with a covering device which covers the holes in a circumferential zone.

Abstract: A urological resectoscope (1) including a tubular, metallic external stem (2) fitted with holes (3) in its distal end zone, a tubular insulating element (7, 27, 37, 47) being affixed distally to the external stem, further including a tubular internal stem (8) configured within the external stem and resting against it in a sealing manner and an electrode support (13) longitudinally displaceable inside the internal stem and supporting a cutting loop (15) in the region of the insulating element (7, 27, 37, 47). The insulating element (7, 27, 37, 47) is configured in a longitudinally mutually overlapping manner within an affixation zone (6) and the insulating element (7, 27, 37, 47) exhibiting a wall thickness distally from the affixation zone (6) larger than the wall thickness of the external stem (2), wherein the inside diameter of the insulating element (27, 47) is the same as the inside diameter of the external stem (2).

Abstract: A surgical vaporization electrode (1) including an electrode head (2) which in turn is fitted with a functional surface (6) and which is connected at a minimum of one connection site (10) to a feed conductor (3) enclosed by an insulating sheath (4), is characterized in that the surface zone (7) of the electrode head (2) surrounding the connection site (10) is fitted with a ceramic covering (8).

Abstract: A urological resectoscope having a tubular shaft (3) is disclosed, having a fixed optical guide tube (2), within which there is an optical system (1) that projects distally beyond the optical guide tube. An elongate, rod-shaped carrier (4) is provided, which carries a cutting instrument (6) at its distal end. The carrier (4) is longitudinally moveably mounted in the tubular shaft (3) outside the optical guide tube (2). The carrier is held distally from the optical guide tube (2) with a sliding tube (8) on the optical system (1) at a radial spacing from the axis of the optical system (1). The carrier is also secured in the peripheral rotary direction to the optical guide tube (2) with a rotary lock (9, 10). The rotary lock has a bar (9) parallel to the carrier (4) and connected to it and a distally open elongate slot (10) in the optical guide tube (2).

Abstract: A urological resectoscope stem (1) including an insulating muff (11) constituting the end zone of the stem (1), further including an outer tube (2, 9), an inner tube (3) and a cross-sectionally annular distally closed return flow duct (4) which is subtended at least over the larger part of its length between the outer tube (2, 9) and the inner tube (3), where the stem (1) is fitted with outwardly open, distally extending grooves (10), wherein the annular return flow duct (4) communicates directly by apertures (19) with the grooves (10).

Abstract: A urological resectoscope (1) comprising a tubular, metallic external tube (2) fitted with holes (3) in its distal end zone, a tubular insulating element (7, 27, 37, 47) being affixed distally to said external stem, further comprising a tubular internal stem (8) configured within said external stem and resting against it in sealing manner and an electrode support (13) longitudinally displaceable inside said internal stem and supporting a cutting loop (15) in the region of the insulating element (7, 27, 37, 47), the inside space of the internal stem (8) and the gap (12) between the stems (2, 8) being proximally connected to liquid hookups (10, 11), the internal stem (8) and the electrode support (13) being connected to the outer stem (2) in a manner allowing the internal stem (8) and the electrode support (13) to be proximally pulled out of the external stem (2) and the external stem (2), the insulating element (7, 27, 37, 47) being configured in longitudinally mutually overlapping manner within an affixation

Abstract: A urological resectoscope is disclosed, having a tubular shaft (1), through which an optical system (2) and a longitudinally moveable instrument carrier (5) pass. The optical system (2) is supported with respect to the tubular shaft (1) at a spacing from the proximal end of the tubular shaft (1) with a support device (9, 12). The carrier (5) is positioned with a radial positioning device (10, 15) and a circumferential angular positioning device (11, 12). The support device (12, 18, 18?) is so arranged adjacent to the optical system (2) in the region in which the carrier (5) extends, that it supports the optical system (2) with respect to the tubular shaft (1) with a two point support system and imparts lateral guidance to the carrier (5) in the circumferential angular direction.

Abstract: A urological resectoscope having a tubular shaft (3) is disclosed, having a fixed optical guide tube (2), within which there is an optical system (1) that projects distally beyond the optical guide tube. An elongate, rod-shaped carrier (4) is provided, which carries a cutting instrument (6) at its distal end. The carrier (4) is longitudinally moveably mounted in the tubular shaft (3) outside the optical guide tube (2). The carrier is held distally from the optical guide tube (2) with a sliding tube (8) on the optical system (1) at a radial spacing from the axis of the optical system (1). The carrier is also secured in the peripheral rotary direction to the optical guide tube (2) with a rotary lock (9, 10). The rotary lock has a bar (9) parallel to the carrier (4) and connected to it and a distally open elongate slot (10) in the optical guide tube (2).

Abstract: A urological resectoscope having an axially extending shaft tube, the proximal end thereof being fixed to a main body. A sliding body is proximally positioned in relation to the main body, and can slide in a parallel manner in relation to the axis thereof. The sliding body includes a receiver, a fixing device and a contacting device. An electrode that can be subjected to a high frequency, including a rigid electrode carrier having one external, insulated conductive wire, can be positioned in the resectoscope such that it can axially slide beyond the distal end of the shaft tube. In the assembly position, the electrode carrier extends through the shaft tube and the main body into the receiver, and can be fixed by the fixing device and contacted by the contacting device. The fixing device is proximally arranged in relation to the contacting device on the sliding body.

Abstract: The invention relates to an electrode that can be subjected to a high frequency, the electrode including an electrode carrier having at least one external, insulated conductive wire. The electrode is used in a urological resectoscope having an axially extending shaft tube, the proximal end thereof being fixed to a main body. A sliding body is proximally positioned in relation to the main body, and can slide in a parallel manner in relation to the axis thereof. The sliding body includes a receiver into which the proximal end region of the electrode carrier can be introduced. The carrier penetrates the main body and is positioned such that it can slide axially in the shaft tube assembly position in order to fix a fixing section of the electrode carrier via a fixing device pertaining to the sliding body, and in order to contact a first contacting section of the electrode carrier via a first contacting device pertaining to the main body.

Abstract: The invention relates to a medical endoscope (1) that comprises a proximal end piece (3) and an optical system (4) that can be inserted up to a proximal eyepiece (5). A spring-loaded locking device is configured in the end piece and engages in a groove (8) of a pin (7) in a locking manner. Said pin is provided with a tip (9), distally projects from the eyepiece and can be inserted in the groove. A slide (12a) is disposed in a shaft (11) that extends in the end piece (3) and can be actuated from the shaft end. Said slide is coupled to one or more blades (15a) in such a manner that it lifts them off the pin when the device is actuated, the blades being slideable cross-wise to the pin in the end piece and being pressed against the pin under the action of a spring.

Abstract: A urological resectoscope having an axially extending shaft tube, the proximal end thereof being fixed to a main body. A sliding body is proximally positioned in relation to the main body, and can slide in a parallel manner in relation to the axis thereof. The sliding body includes a receiver, a fixing device and a contacting device. An electrode which can be subjected to a high frequency, including an electrode carrier having one external, insulated conductive wire, can be positioned in the resectoscope such that it can axially slide beyond the distal end of the shaft tube. In the assembly position, the electrode carrier extends through the shaft tube and the main body into the receiver, and can be fixed thereto by the fixing device and contacted therein by the contacting device.

Abstract: The invention relates to an electrode which can be subjected to a high frequency, comprising an electrode carrier having at least one external, insulated conductive wire. Said electrode is used in a urological resectoscope having an axially extending shaft tube, the proximal end thereof being fixed to a main body. A sliding body is proximally positioned in relation to the main body, and can slide in a parallel manner in relation to the axis thereof. Said sliding body comprises a receiver into which the proximal end region of the electrode carrier can be introduced—said carrier penetrating the main body and being positioned in such a way that it can slide axially in the shaft tube assembly position—in order to fix a fixing section of the electrode carrier by means of a fixing device pertaining to the sliding body, and in order to contact a first contacting section of the electrode carrier by means of a first contacting device pertaining to the main body.

Abstract: A continuously rinsing double-sheath endoscope, which includes an inner sheath and an outer sheath. The inner sheath includes a feed duct and receives an optics. The outer sheath surrounds the inner sheath and cooperates with the inner sheath to subtend a return flow duct. The outer sheath is fitted at its distal end zone with at least one aperture to establish fluid communication between the return duct and the ambience of the outer sheath. Cross-sectional geometric centers of gravity of the inner and outer sheaths are mutually shifted along most of the length of the return-flow duct subtended between them.