Abstract: Disclosed is a method for determining the three-dimensional positions of points in a target region on a patient in a reference coordinate system of a surgical visualization system. The method includes generating at least one light marking in the target region. Using at least one imaging unit to capture at least one image representation containing the at least one light marking. Determining a three-dimensional position of the at least one light marking in the reference coordinate system proceeding from image coordinates of the light marking in the captured image representation, with the known pose of the at least one light source and/or the light path and the known pose of the at least one imaging unit being taken into account. Repeating measures multiple times, with a position of the at least one light marking within the target region being changed each time, and providing the determined three-dimensional positions.

Abstract: An optical observation system includes a contactless pointer unit having a real component including a position labeling device and a virtual component including a virtual tip which is at least intermittently spaced apart from the real component. The system includes a unit for capturing at least one portion of an object and a unit for capturing a position and an alignment of the real component and a unit configured to display the captured portion of the object. The system includes a control unit for ascertaining a position of the virtual tip based on the captured position and alignment of the real component and for arranging for the image output unit to display, with a mark, the position of the virtual tip in the displayed captured portion of the object. An operating method, a pointer device suitable as a real component and a computer program product are provided.

Abstract: A method and a medical optical tracking system, wherein the medical optical tracking system is synchronized with at least one other medical optical tracking system, extraneous light signals of the at least one other optical tracking system are detected by way of a sensor or a camera used for tracking of the optical tracking system, temporal properties of the detected extraneous light signals are determined based on acquired sensor data or acquired camera images, and temporal properties of light signals generated by way of a light source of the optical tracking system and/or a measuring window of the sensor or the camera are defined, on the basis of the determined temporal properties of the extraneous light signals, such that the light signals from the light source and/or the measuring window lie in light signal pauses of the at least one other optical tracking system.

Abstract: A microscopy system and a method for operating a microscopy system are provided. The microscopy system includes a tracking camera configured to detect a pose of an object, a tracking illumination device, and a controller configured to control the tracking illumination device and/or the tracking camera. Illumination information is determinable by evaluating an image representation from the tracking camera and/or pose information of the object is determinable relative to at least one illumination device and/or a working distance is determinable, with the illumination by the tracking illumination device and/or an image capture by the at least one tracking camera being able to be set based on the illumination information and/or based on the pose information of the object and/or based on the working distance.

Abstract: Disclosed is a method for determining the three-dimensional positions of points in a target region on a patient in a reference coordinate system of a surgical visualization system. The method includes generating at least one light marking in the target region. Using at least one imaging unit to capture at least one image representation containing the at least one light marking. Determining a three-dimensional position of the at least one light marking in the reference coordinate system proceeding from image coordinates of the light marking in the captured image representation, with the known pose of the at least one light source and/or the light path and the known pose of the at least one imaging unit being taken into account. Repeating measures multiple times, with a position of the at least one light marking within the target region being changed each time, and providing the determined three-dimensional positions.

Abstract: A system and a method for optically detecting a pose of at least one instrument in an operating theater are provided. The method includes determining pose information of the at least one instrument with an optical pose detection device of a surgical microscope or with a microscope-external optical pose detection device, determining whether the pose information is biunique or whether a biunique determination of the pose of the instrument is possible, and evaluating additional information for determining additional pose information, at least for a case where no biunique determination of the pose is possible.

Abstract: A method for operating a surgical microscope and microscope are disclosed, wherein at least one main image of a capture region, which is imaged through a beam path of an imaging optical unit of the surgical microscope, is captured by means of at least one main camera arranged in or at the beam path, wherein at least one additional image is captured by means of at least one additional camera arranged outside the beam path, wherein a capture region of the at least one additional camera at least partially overlaps with the imaged capture region of the at least one main camera, wherein the captured at least one main image and additional image are compared by an image processing device, and wherein, at least one correction parameter for the at least one main image is determined and provided.

Abstract: An optical observation system includes a contactless pointer unit having a real component including a position labeling device and a virtual component including a virtual tip which is at least intermittently spaced apart from the real component. The system includes a unit for capturing at least one portion of an object and a unit for capturing a position and an alignment of the real component and a unit configured to display the captured portion of the object. The system includes a control unit for ascertaining a position of the virtual tip based on the captured position and alignment of the real component and for arranging for the image output unit to display, with a mark, the position of the virtual tip in the displayed captured portion of the object. An operating method, a pointer device suitable as a real component and a computer program product are provided.

Abstract: A stand, for example, for mounting a medical instrument, has a first part and second part which is connected to the first part in a rotationally movable manner via a rotary joint and can be moved relative to the first part about an axis of rotation. The stand includes a drive module supported on the first part. The module has a drive member coupled to the second part. A control device having a controller is connected to the drive module and intended for setting a drive torque provided by the drive member. The control device includes a torque sensor for detecting a torque acting on the second part and a control-signal assembly connected to the controller. The control-signal assembly from the torque detected and a setpoint value generates a signal, which is fed to the controller and is intended for setting the drive torque provided by the drive member.

Abstract: Carrying arrangement for carrying apparatuses, in particular medical apparatuses, having a base carrier on which at least three roller elements are arranged in order to move the carrying arrangement with respect to a floor surface. The roller elements are each rotatable about first axes of rotation (D). At least one of these roller elements is pivotable about a pivot axis (S) with respect to the base carrier. The axes of rotation (D) and the pivot axis (S) extend in different directions. At least one supporting element is arranged at least indirectly on the base carrier. The supporting element does not contact the floor in a first position of the carrying arrangement with respect to the floor surface and the supporting element contacts the floor in a second position of the carrying arrangement with respect to the floor, the second position being pivoted with respect to the first position.

Abstract: The invention relates to a medical apparatus having a medical optical appliance and a holding device with at least two holding arms which are connected movably to one another with at least one degree of freedom of movement via a joint and with an actuator which is connected to the two holding arms in such a way that a force can be exerted via the actuator between the two holding arms in the direction of the degree of freedom of movement. A control unit comprises a first regulator for outputting a first control signal to the actuator via an adjusting element. The medical optical appliance is mounted on the holding device.

Abstract: Carrying arrangement for carrying apparatuses, in particular medical apparatuses, having a base carrier on which at least three roller elements are arranged in order to move the carrying arrangement with respect to a floor surface. The roller elements are each rotatable about first axes of rotation (D). At least one of these roller elements is pivotable about a pivot axis (S) with respect to the base carrier. The axes of rotation (D) and the pivot axis (S) extend in different directions. At least one supporting element is arranged at least indirectly on the base carrier. The supporting element does not contact the floor in a first position of the carrying arrangement with respect to the floor surface and the supporting element contacts the floor in a second position of the carrying arrangement with respect to the floor, the second position being pivoted with respect to the first position.

Abstract: A stand, for example, for mounting a medical instrument, has a first part and second part which is connected to the first part in a rotationally movable manner via a rotary joint and can be moved relative to the first part about an axis of rotation. The stand includes a drive module supported on the first part. The module having a drive member coupled to the second part. A control device having a controller is connected to the drive module and intended for setting a drive torque provided by the drive member. The control device includes a torque sensor for detecting a torque acting on the second part and a control-signal assembly connected to the controller. The control-signal assembly from the torque detected and a setpoint value generates a signal, which is fed to the controller and is intended for setting the drive moment provided by the drive member.

Abstract: The invention relates to a medical apparatus having a medical optical appliance and a holding device with at least two holding arms which are connected movably to one another with at least one degree of freedom of movement via a joint and with an actuator which is connected to the two holding arms in such a way that a force can be exerted via the actuator between the two holding arms in the direction of the degree of freedom of movement. A control unit comprises a first regulator for outputting a first control signal to the actuator via an adjusting element. The medical optical appliance is mounted on the holding device.