Abstract: The invention relates to a medical instrument with a shaft (2) having on its proximal end a handle (3) consisting of two gripping members (3a, 3b) and on its distal end a tool (4) consisting of two jaw members (4a, 4b) that can rotate with respect to one another around a common rotation point (5), whereby the jaw members (4a, 4b) are rotated for opening and closing the tool (4) by means of a push pin (6) which is connected on the proximal end with a gripping member (3b) of the handle (3) which is configured to be rotatable and which on the distal end is connected with each of the jaw members (4a, 4b) by means of one toggle joint (7a, 7b).

Abstract: The present invention relates to a medical instrument, especially for use in surgery, comprising two parts which can be joined to each other; a coupling sleeve which is joined to one of the two parts of said instrument, and a coupling shank which is formed on the other part of the instrument and can be fixed inside the coupling sleeve, where said coupling sleeve and the coupling shank can be joined to each other in a non-positive fit by at least one coupling element arranged inside a guide cage and where the said coupling element is principally slidable in an axial direction only and the coupling is provided with only one spring element.

Abstract: The invention comprises a flexible tightening device, especially for medical purposes, with one of several jointed element pivotable against one another existing arm, in which the arm can be locked into the desired position of the locking element by means of a tightening element. In order to create a simply constructed tightening device, which is also easy to clean, which can be adjusted on many sides and is lockable, the invention is suggested, in which each jointed element demonstrates a ball joint at one end and at the opposite end a socket joint to receive the ball joint and that each jointed element is constructed in the length direction in two parts, whereby the individual length pieces are adjustable against one another for locking purposes.

Abstract: A medical forceps is provided with two independently moveable jaw parts at the distal end. The forceps comprise a shaft with two rods extending axially therein, the rods being arranged adjacent to one another and being axially displaceable independently of one another. The first rod is joined to the first jaw part and the second rod to the second jaw part. The forceps further comprise a handle at the proximal end with two actuator elements, wherein the first actuator element is joined to the first rod and the second actuator element to the second rod. The first rod and the second rod each comprise a coupling element at their proximal ends.

Abstract: A bipolar medical instrument comprises a tubular shaft and two jaw parts. The jaw parts are arranged movably, one relative to the other, at the distal end of the tubular shaft and coupled one with the other via a joint. Each of the jaw parts forms a work electrode of different polarity. Each jaw part has associated to it a separate current line, one of such current lines being constituted by an axially movable force transmission element that is arranged in the tubular shaft and that is frictionally coupled to at least one of the jaw parts. At least one of the jaw parts comprises, at least in the region of the joint, a single-piece main body made from an electrically insulating material on which an electrically conductive jaw part insert is fastened, which forms a respective work electrode and which is connected, in an electrically conductive fashion, to the respective associated current line.

Abstract: The invention relates to a medical instrument with a hollow instrument canal (4) that is configured inside a housing (1a) and can be closed by means of at least one valve body (6) and rotated into open position by means of an instrument inserted into the instrument canal. The at least one valve body (6) is configured as a flap consisting of an essentially non-bendable material mounted on the housing (1a) so that it can be rotated by means of an elastic, bendable connecting element (7) configured as a wire spring in such a way that the valve body is pre-tensioned in the closed direction. A medical instrument with a valve body (6) of simple construction, which insulates reliably, is distinguished according to the invention in that the connecting element (7) on the one hand is secured on the housing (1a) and on the other hand carries the valve body (6), so that the connecting element (7) can be secured in a ring groove (1b) configured in the housing (1a).

Abstract: The invention relates to a sealing device for a rectoscope for attaching on a sealing receiver (2) of the rectoscope, and includes a sealing (1) and an additional sealing element (8), where the sealing (1) has a clip (1a) for securing to the sealing receiver (2) of the rectoscope, an end surface (1b) with an aperture (3) for introducing a medical instrument, and a sealing sleeve connecting the clip (1a) and the end surface (1b) to one another and where the end surface (1b) is mounted so as to be tiltable with respect to the rectoscope.

Abstract: A medical instrument for irrigation and/or suction has an instrument body in which at least one flow channel is present for the passage of a fluid, at least one shut-off member for alternately shutting off the at least one flow channel, and an actuating member for actuating the shut-off member. The at least one shut-off member is a ball which, in a closure position, lies sealingly on a sealing edge of the flow channel so that it closes off the internal cross section of the flow channel, the ball being movable, between the closure position for closing the flow channel and a release position for freeing the flow channel, substantially in a direction transverse to the longitudinal direction of the flow channel, and the actuating member for moving the ball between the closure position and the release position being movable in a direction transverse to the flow channel.

Abstract: A medical instrument has a shaft and a tool which is mounted on a distal end of the shaft in such a way as to be removable therefrom. The shaft has an inner shaft and a tubular shaft which surrounds the inner shaft and which is longitudinally displaceable relative thereto. The tool is locked on the shaft when the tubular shaft is in a locking position pushed forward relative to the inner shaft, and it can be removed from the shaft when the tubular shaft is in a release position pulled back relative to the inner shaft. For easier handling of the instrument when changing the tool, it is proposed that the instrument has an actuating element which is movable substantially transversely with respect to the longitudinal direction of the tubular shaft and which is connected operatively to the tubular shaft in such a way that the tubular shaft is moved from the locking position to the release position by moving the actuating element from a first position to a second position, and vice versa.

Abstract: The invention related to an instrument for cutting biological and notably human tissue, especially during endoscopic surgery, with an outer tube and a hollow, cylindrical cutting tube which is positioned within the outer tube and can be rotated about its longitudinal axis and at whose distal end at least one blade is positioned. The instrument also comprises a manipulator which is mounted at the proximal end of the tubes. The outer tube can be displaced in the axial direction of the cutting tube, which is immovably fixed to the manipulator, against the force of a pressure spring between an initial position in which the outer tube projects beyond the cutting tube on the distal side and a working position in which the blade protrudes from the distal end of the outer tube. The aim of the invention is to improve an instrument of this type in such a way that it is simple and safe to use while giving an operator the greatest possible freedom of movement.

Abstract: The invention comprises a flexible tightening device (1), especially for medical purposes, with one of several jointed element (2) pivotable against one another existing arm (3), in which the arm (3) can be locked into the desired position of the locking element (2) by means of a tightening element. In order to create a simply constructed tightening device (1), which is also easy to clean, which can be adjusted on many sides and is lockable, the invention is suggested, in which each jointed element (2) demonstrates a ball joint (6) at one end and at the opposite end a socket joint (7) to receive the ball joint (6) and that each jointed element (2) is constructed in the length direction in two parts, whereby the individual length pieces (2a, 2b) are adjustable against one another for locking purposes.

Abstract: A shaft is provided for a flexible endoscope. The shaft has a tubular mantle whose outer surface contacts a body tissue of a patient during use of said endoscope. The outer surface of said shaft is microscopically roughened, for example by sand blasting.

Abstract: A handle is provided for a medical instrument having a tubular shaft. The handle comprises at least one movable grip element as well as a coupling portion through which the tubular shaft is connected or can be connected to the handle. The movable grip element is or can be connected to a force transmission element axially movable in the direction of a longitudinal axis of the tubular shaft. Motion of the at least one movable is translated into an axial motion of the force transmission element. The coupling portion is pivotal and lockable relative to a handle axis about a pivot axis running transversely to the longitudinal axis of the tubular shaft. A control element formed as a dual-arm lever is provided whose one lever arm is connected to the movable grip element and whose other lever arm is connected to the force transmission element, such that motion of the movable grip element causes rotation of the control element, which is translated into an axial movement of the force transmission element.

Abstract: A medical instrument for dissecting tissue in the human or animal body comprises a shaft. At least one movable tool is arranged at a distal end of the shaft. At least one movable grip element is arranged at a proximal end of the shaft. A force transmission element extends along the shaft, which force transmission element is movable relative to the latter and transmits thrust and/or tension forces and whose proximal end is non-positively joined to the at least one movable grip element and whose distal end is non-positively joined to the at least one movable tool. The shaft is further provided with a bend at at least one point between the distal end and the proximal end. The force transmission element is configured, at least in the region of the bend, as a flexible tubular element conforming to the bend, which is guided in contact with the shaft.

Abstract: A medical instrument for dissecting tissue in the human or animal body comprises a shaft. At least one movable tool is arranged at a distal end of the shaft. At least one movable grip element is arranged at a proximal end of the shaft. A force transmission element extends along the shaft, which force transmission element is movable relative to the latter and transmits thrust and/or tension forces and whose proximal end is non-positively joined to the at least one movable grip element and whose distal end is non-positively joined to the at least one movable tool. The shaft is further provided with a bend at at least one point between the distal end and the proximal end. The force transmission element is configured, at least in the region of the bend, as a flexible tubular element conforming to the bend, which is guided in contact with the shaft.

Abstract: The present invention relates to a medical instrument, especially for use in surgery, comprising two parts (2, 3) which can be joined to each other; a coupling sleeve (7) which is joined to one of the two parts (3) of said instrument, and a coupling shank (6) which is formed on the other part (2) of the instrument and can be fixed inside the coupling sleeve (7), where said coupling sleeve (7) and the coupling shank (6) can be joined to each other in a non-positive fit by at least one coupling element (13) arranged inside a guide cage (12) and where the said coupling element (13) is principally slidable in an axial direction only and the coupling is provided with only one spring element (14).

Abstract: A bipolar medical instrument comprises a tubular shaft and two jaw parts. The jaw parts are arranged movably, one relative to the other, at the distal end of the tubular shaft and coupled one with the other via a joint. Each of the jaw parts forms a work electrode of different polarity. Each jaw part has associated to it a separate current line, one of such current lines being constituted by an axially movable force transmission element that is arranged in the tubular shaft and that is frictionally coupled to at least one of the jaw parts. At least one of the jaw parts comprises, at least in the region of the joint, a single-piece main body made from an electrically insulating material on which an electrically conductive jaw part insert is fastened, which forms a respective work electrode and which is connected, in an electrically conductive fashion, to the respective associated current line.

Abstract: A protective cap for a medical high-frequency instrument is configured such that it covers the high-frequency instrument in insulating fashion at least in the vicinity of an electrical connector for a high-frequency cable.

Abstract: A medical instrument, comprising an elongated shaft having a distal end and a proximal end; a movable tool disposed at said distal end of said shaft; a handle disposed at said proximal end of said shaft; a force transmitting element extending along said shaft and movable in a first and an opposite second movement direction, said force transmitting element being operatively interconnected between said tool and said handle for converting a movement of said handle into a movement of said tool. Steplessly acting locking means coact with said force transmitting element for steplessly locking the movement of said force transmitting element in said first movement direction, whereas said locking means allow free movement of said force transmitting element in said opposite second movement direction.

Abstract: A handle is provided for a medical instrument comprising at least one movable grip element and a coupling portion through which a shaft is or can be connected with the handle. The movable grip element is or can be joined with a force transmission element axially movable in the direction of the longitudinal axis of the shaft to translate motion of the at least one movable grip element into linear motion of the force transmission element. The coupling portion is pivotal relative to a handle axis about at least one pivot axis running transversely to the longitudinal axis of the shaft. In addition, the movable grip element is or can be joined with the force transmission element through a lever arrangement comprising at least two double-arm levers. The first lever is pivotal about an axis fixed to the handle and the second lever is pivotal about an axis fixed to the coupling portion. The two levers are frictionally joined with one another and are pivotal with respect to one another about the first pivot axis.