Abstract: An endoscope is proposed with a shaft (2) that is designed as a flexible or rigid elongated hollow body with a main body (3) which houses the shaft (2) on its proximal end (5) with an image guide (7) and a working channel (10) which extend through the shaft (2) from the distal to the proximal end, continuing into the main body (3) wherein the working channel (10) receives an instrument with a distal end (11) of the working channel (10) which is located in the area of the distal end (6) of the shaft (2) with a proximal end (12) of the working channel (10) which is located in or on the main body (3) wherein the cross-section of the working channel (10) is circular at its proximal end (12) and non-circular at its distal end (11) and wherein the working channel (10) has a transitional area (18) in which the circular cross-section transitions into the non-circular cross-section.

Abstract: A 3D video endoscope has a shaft which has the form of a flexible or rigid elongated hollow body, a first image sensor, a second image sensor, a first optical channel which comprises a first objective lens and a first optical image guiding system which forwards the image captured by the first objective lens to the first image sensor, a second optical channel which comprises a second objective lens and a second optical image guiding system which forwards the image captured by the second objective lens to the second image sensor. The first optical channel and second optical channel are substantially arranged in the shaft. The first optical channel has a first diaphragm which reduces the aperture of the first optical channel compared to the aperture of the second optical channel. Apart from the first diaphragm, the first optical channel and the second optical channel are structured identically.

Abstract: A 3D video endoscope has a shaft which has the form of a flexible or rigid elongated hollow body, a first image sensor, a second image sensor, a first optical channel which comprises a first objective lens and a first optical image guiding system which forwards the image captured by the first objective lens to the first image sensor, a second optical channel which comprises a second objective lens and a second optical image guiding system which forwards the image captured by the second objective lens to the second image sensor. The first optical channel and second optical channel are substantially arranged in the shaft. The first optical channel has a first diaphragm which reduces the aperture of the first optical channel compared to the aperture of the second optical channel. Apart from the first diaphragm, the first optical channel and the second optical channel are structured identically.

Abstract: A connector for a combination cable comprising at least one light guide and several electric lines has body, which can be introduced in the plugging direction into a socket and by means of which the connector can be held in the socket, a light guide holder having a light guide reception channel open at both sides and at least two contact elements in each case connectable to one of the electric lines.