Abstract: An endoscope for laparoscopic surgery, including a shaft with a central axis, a proximal end, a distal end and a first optical beam path with a prism at the distal end of the shaft and having light entrance and exit surfaces, a lens with an optical axis, the lens behind the prism considered from the distal end of the shaft, and beam deflecting optics behind the lens considered from the distal end of the shaft. The light entrance surface is oriented perpendicular to the central axis, and the light exit surface forms a first angle of inclination with a first spatial axis oriented orthogonal to the central axis. To increase the numerical aperture of the lens, the optical axis is arranged perpendicular to the light exit surface of the prism. As a result, the lens has a cross-sectional area that is larger than the light entrance surface of the prism.

Abstract: An instrument for a robotic surgery system that includes a housing and an outer shaft joined to an effector at a distal end, and to the housing at a proximal end. The connection is rotatory so that the outer shaft can rotate about its longitudinal axis. The rotatory connection takes place by way of a first coupling element that is fixed to the outer shaft. The instrument also includes a first inner shaft arranged within the outer shaft and movably supported relative to it. The relative motion may be either a rotation or translation. The first inner shaft is joined with the effector at a distal end and fixed to a second coupling element at a proximal end. The first coupling element encloses the first inner shaft in a first transition region at the proximal end of the outer shaft, and a first sealing element encloses the first inner shaft.