Abstract: A trocar system with a trocar which has a trocar mandrel, a trocar sleeve and a valve block, characterized by a tubular working sleeve having an axially continuous inner channel, in which the trocar can be inserted in such a way that the trocar sleeve is sealed with the outer perimeter thereof in the inner channel, so that the distal tip of the trocar mandrel projects distally out of the working sleeve and that the valve block is located proximally outside the inner channel, and having at least one working channel which is formed on the working sleeve and extends from a proximal inlet opening to a distal outlet opening.

Abstract: A method for surgically removing a tumor from a woman's breast is provided. The method can include inserting an optical trocar having a working channel and a transparent tip through a skin incision, guiding the transparent tip of the trocar through breast tissue with visualization such that the transparent tip of the trocar is placed adjacent to the tumor, insufflating gas via the working channel of the trocar to create a cavity in an operative field next to the tumor, dissecting the tumor free with a surgical instrument inserted through the working channel and removing the tumor through the trocar.

Abstract: An instrument system for minimally invasive surgery in the tissue of a patient, with an instrument shaft, having a distal end that can be inserted in the body of the patient and a proximal end that remains outside the body, with an inner channel extending axially and continuously in the instrument shaft, with at least one working channel extending axially and continuously in the instrument shaft, and with an obturator which can accommodate an optical system coaxially and can be inserted into the inner channel in such a manner that its transparent distal tip projects out from the beveled distal front end of the instrument shaft. The system can include a valve block at the proximal end of the instrument shaft, closing the inner channel and enabling sealed passage of the obturator or an optical system.

Abstract: A trocar system with a trocar which has a trocar mandrel, a trocar sleeve and a valve block, characterized by a tubular working sleeve having an axially continuous inner channel, in which the trocar can be inserted in such a way that the trocar sleeve is sealed with the outer perimeter thereof in the inner channel, so that the distal tip of the trocar mandrel projects distally out of the working sleeve and that the valve block is located proximally outside the inner channel, and having at least one working channel which is formed on the working sleeve and extends from a proximal inlet opening to a distal outlet opening.

Abstract: A trocar system, having a trocar, a trocar sleeve, an optical channel extending coaxially in the trocar for receiving an optical unit, and a hollow transparent distal tip of the trocar, which can be observed from the interior by means of the optical unit, wherein a working channel extends continuously from the proximal end to the distal end in the trocar and opens into an outlet opening in the region of the distal end, and wherein the inner wall of the working channel is formed at least in an axially continuous sub-region of the circumference thereof by the trocar sleeve.

Abstract: An instrument system for minimally invasive surgery in single port technology, having a trocar and at least one instrument channel which runs at the trocar from proximal to distal and a proximal end remaining extra-corporally when the trocar is inserted into the body of a patient, and a distal end located intra-corporally, wherein a semi-flexible instrument can be inserted through the instrument channel in such a manner that the operating handle thereof remains extra-corporal and the distal working element thereof emerges distally from the instrument channel. The instrument channel is flexibly pliant, stable in the longitudinal direction thereof and arranged outside on the trocar. The distal end of the instrument channel is fixed to the trocar.

Abstract: A trocar system, comprising a trocar having an optical channel extending coaxially in the trocar for receiving an optical unit, and a hollow transparent distal tip of the trocar, which can be observed from the interior. The distal working end of an instrument having two working parts movable relative to one another is formed on the distal tip, wherein a first working part is an integral component of the tip and the second working part is mounted movably on the tip, wherein an actuating channel is constructed in the wall of the trocar surrounding the optical channel, which channel extends axially parallel from the proximal end of the trocar into the distal tip thereof, and wherein an actuating element is received in the actuating channel such as to be axially displaceable.

Abstract: A method for surgically removing a tumor from a woman's breast is provided. The method can include inserting an optical trocar having a working channel and a transparent tip through a skin incision, guiding the transparent tip of the trocar through breast tissue with visualization such that the transparent tip of the trocar is placed adjacent to the tumor, insufflating gas via the working channel of the trocar to create a cavity in an operative field next to the tumor, dissecting the tumor free with a surgical instrument inserted through the working channel and removing the tumor through the trocar.

Abstract: An instrument system for minimally invasive surgery in single port technology, having a trocar and at least one instrument channel which runs at the trocar from proximal to distal and a proximal end remaining extra-corporally when the trocar is inserted into the body of a patient, and a distal end located intra-corporally, wherein a semi-flexible instrument can be inserted through the instrument channel in such a manner that the operating handle thereof remains extra-corporal and the distal working element thereof emerges distally from the instrument channel. The instrument channel is flexibly pliant, stable in the longitudinal direction thereof and arranged outside on the trocar. The distal end of the instrument channel is fixed to the trocar.

Abstract: A trocar system, having a trocar, a trocar sleeve, an optical channel extending coaxially in the trocar for receiving an optical unit, and a hollow transparent distal tip of the trocar, which can be observed from the interior by means of the optical unit, wherein a working channel extends continuously from the proximal end to the distal end in the trocar and opens into an outlet opening in the region of the distal end, and wherein the inner wall of the working channel is formed at least in an axially continuous sub-region of the circumference thereof by the trocar sleeve.

Abstract: A trocar system, comprising a trocar, having an optical channel extending coaxially in the trocar for receiving an optical unit, and a hollow transparent distal tip of the trocar, which can be observed from the interior. The distal working end of an instrument having two working parts movable relative to one another is formed on the distal tip, wherein a first working part is an integral component of the tip and the second working part is mounted movably on the tip, wherein an actuating channel is constructed in the wall of the trocar surrounding the optical channel, which channel extends axially parallel from the proximal end of the trocar into the distal tip thereof, and wherein an actuating element is received in the actuating channel such as to be axially displaceable.

Abstract: A trocar system, having a trocar, an optical channel extending coaxially in the trocar for receiving an optical unit, and a hollow transparent distal tip of the trocar, which can be observed from the interior by means of the optical unit, wherein at least one working channel is constructed in the wall of the trocar surrounding the optical channel, which channel extends continuously and axially parallel from the proximal end of the trocar into the distal tip and opens into an outlet opening in the region of the tip.

Abstract: A medical instrument comprises a guide tube (10) that can be inserted into a bodily passage of a patient. An elastically flexible cannula may be displaced within an inner axial guide channel of the guide tube (10), the distal tip (52) of the cannula being able to emerge from a lateral opening at the periphery of the guide tube (10) at an angle to the axis of the guide tube (10). The guide tube (10) at its proximal end is accommodated in a handle piece (22) so as to be rotatable about the longitudinal axis of the guide tube.

Abstract: A medical instrument comprises a guide tube (10) that can be inserted into a bodily passage of a patient. An elastically flexible cannula may be displaced within an inner axial guide channel of the guide tube (10), the distal tip (52) of the cannula being able to emerge from a lateral opening at the periphery of the guide tube (10) at an angle to the axis of the guide tube (10). The guide tube (10) at its proximal end is accommodated in a handle piece (22) so as to be rotatable about the longitudinal axis of the guide tube.

Abstract: The invention relates to an instrument for the medical examination of tight body ducts, particularly for the mammary ducts of the breast, comprising a cannula having a cannula shaft (6) and a distal cannula end (1). The distal cannula end (1) is transparent and has a point (la) that is distally arched, and a tube section (lb) connected thereto. A recess (4) is configured in the tube section (lb). An adenoid curette (2) may be axially displaced on the tube section (lb) in order to separate tissue accommodated in the recess (4). An endoscopic optical element (3) may be inserted into the cannula shaft (6), thus enabling the observation of the distal point (la) and the tube section (lb) having the recess (4) from the interior as a wide angle optical element.

Abstract: An instrument is described for the penetration of body tissue with a hollow shaft, the point of which is formed as a conical, beveled, or tapered window. An optic with a lighting unit is brought to the point through the hollow shaft. The optic ends at an axial distance behind the summit of the point. An advancing element having a cutting edge extends along the point. The instrument can be inserted while viewing the structure to be penetrated. In so doing, the structure adjacent the point can be observed over substantially the entire surface area thereof. Preferably, a second optic is run to the summit of the point, which in addition enables improved observation of the area lying directly in front of the point.

Abstract: A medical needle for endoscopic surgery has an external cannula tube in which a protective element is mounted so that it can be shifted axially against a spring. The distal, front protective surface of the protective element in a forward position projects beyond the sharp tip of the cannula tube and in a rear position is behind this tip. The protective surface of the protective element is transparent and can be observed through an optical system installed in the protective element.

Abstract: A flexible collapsible bag is introduced into the abdominal cavity to remove larger portions of tissue from the abdominal cavity through a threaded casing introduced into the abdominal wall. The bag has a side opening through which the tissue can be moved into the bag. The bag has an end opening which remains extracorporeal to the threaded casing in the abdominal wall. After partially pulling out the bag, the side opening is located outside of the threaded casing, and the tissue, which is tightly enclosed by the portion of the bag remaining in the abdominal cavity, is cut into pieces, as by cutting filaments having portions at the bottom of the bag and extending extracorporeally through the threaded casing and the end opening of the bag.

Abstract: A flexible bag is introduced into the abdominal cavity to remove larger portions of tissue from the abdominal cavity through a threaded casing introduced into the abdominal wall. The bag features a side opening through which the tissue can be moved into the bag. The end opening of the bag remains extracorporeal to the threaded casing. After pulling out the bag the side opening is located outside of the threaded casing and the tissue is tightly enclosed by the portion of the bag remaining in the abdominal cavity and is accessible for cutting up the tissue form outside, through the threaded casing.