Abstract: The invention relates to a device for reducing pressure variations in a fluid flowing in an aspiration branch of a surgical system, which pressure variations are generated by a pump that delivers in a non-continuous manner in the active operating state, with a diffuser arrangement which is arranged, in the aspiration branch, upstream of the pump in the direction of flow of the fluid. The invention also relates to a surgical system, in particular an ophthalmic microsurgical system for lens surgery.

Abstract: An ophthalmic surgical cassette acts with a peristaltic pump having a wheel defining a periphery and includes a cassette body having a first recess which, in cross section, has a circle segment shape defining a circular arc. The first recess permits the wheel of the peristaltic pump to engage therein. An aspiration line transports aspirated fluid via the pump. A second recess along the circular arc of the circle segment shape has a wall forming a fluid channel. The fluid channel has a first end connected to the aspiration line and a second end connected to a collection container supply line. An elastic cover covers the channel and is held to ensure a constant spacing of the cover to the second recess to permit fluid from the aspiration line to be transported through the channel to the container supply line via the wheel acting on the cover.

Abstract: A method for carrying out eye surgery comprises a comparison of images recorded before surgery with images recorded during surgery in order to generate a marker which represents a target orientation of an intraocular lens or a difference between a current orientation and the target orientation of the intraocular lens. An eye surgery system respectively comprises an imaging system which is used during a surgery and has a camera, and a diagnostic system which is used before surgery and which also has a camera. The imaging system used during surgery comprises an image processing device in order to perform a computation based on the recorded images, and in order to determine a respective orientation value, from which a representation of a marker representing the target orientation of the intraocular lens is obtained.

Abstract: A control device for an ophthalmic surgical system includes a flow determination device for determining an actual value of fluid flow in an aspiration line. The aspiration line is coupled to a handpiece for phacoemulsification of an eye lens and an occlusion determination device determines whether there is an occlusion because of a particle of the eye lens at a suction opening of the aspiration line. An evaluation unit establishes a hardness of the particle in dependence on the determined actual value of the fluid flow in the aspiration line should the occlusion determination device have determined that an occlusion is present, and, dependent on the hardness, determines a first value of ultrasound energy, which can be supplied to the handpiece by an energy source. A control unit actuates the energy source, during the occlusion, so that it outputs the determined first value of the ultrasound energy.

Abstract: The invention relates to an optical measuring system comprising a wave front sensor for characterizing a shape of a wave front of measuring light and an imaging lens, wherein the imaging lens comprises a first optical assembly and a second optical assembly for imaging an object region in an entrance region of the wave front sensor. A distance between the object region and the first optical assembly is larger than a focal length of the first optical assembly. Furthermore, the optical measuring system can comprise an optical microscopy system and optionally an OCT system for carrying out different optical examination methods at the same time.

Abstract: The invention relates to a surgical system for controlling a fluid. The system includes an irrigation line, which is connected at one end to a first fluid container for holding irrigation fluid, and which is connected at another end to a surgical handpiece. The system also includes an aspiration inlet line, which is provided from the surgical handpiece to an inlet of a suction pump, such that fluid can be sucked through the handpiece by the suction pump. The system further includes a second fluid container for holding the irrigation fluid, and an aspiration ventilation line, which connects the second fluid container to the aspiration inlet line. In addition, the system includes a venting valve, which is provided in the aspiration ventilation line and which can be switched as a function of a fluid pressure in the aspiration inlet line. The second fluid container can be filled via a filling line.

Abstract: The invention relates to a flow limiter for a fluid flowing in an aspiration branch of a surgical system, which fluid is a surgical fluid and has emulsified particles in a surgical intervention, with a limiter element that comprises at least one flow channel arrangement with at least one main channel and at least one subsidiary channel that opens into the main channel at an angle of greater than or equal to 90°. The invention also relates to a surgical system, in particular an ophthalmic microsurgical system for lens surgery.

Abstract: An ophthalmosurgical measuring device (100) has an irrigation line (4) through which irrigation fluid (3) can be transported and an aspiration line (7) through which aspiration fluid can be transported to a suction pump (8). The ophthalmosurgical measuring device also includes a sensor (10) with which a differential pressure between irrigation line (4) and aspiration line (7) can be detected.

Abstract: An optical system, comprising a microscope housing having a coupling opening for a detachable coupling of an objective lens of the optical system such that the objective lens is arranged in a microscope beam path of the optical system for imaging an object region of the objective lens. The optical system further comprises an assembly. The assembly comprises an assembly housing having a coupling element for the detachable coupling of the coupling element and the coupling opening of the microscope housing; a wavefront analysis system, which provides a wavefront beam path; and a beam splitter, which is arranged in the wavefront beam path. The objective lens, the beam splitter and the wavefront analysis system are arranged such that during the coupling of the coupling opening and the coupling element, the objective lens is arranged in the microscope beam path and the object region is arranged in the wavefront beam path.

Abstract: The invention relates to an optical measuring system comprising a wave front sensor for characterizing a shape of a wave front of measuring light and an imaging lens, wherein the imaging lens comprises a first optical assembly and a second optical assembly for imaging an object region in an entrance region of the wave front sensor. A distance between the object region and the first optical assembly is larger than a focal length of the first optical assembly. Furthermore, the optical measuring system can comprise an optical microscopy system and optionally an OCT system for carrying out different optical examination methods at the same time.

Abstract: A polishing head for polishing machines, in particular for polishing optical surfaces, has a polishing plate that is connected to a rotationally drivable drive shaft. The polishing plate is articulated to, and rotates with, the drive shaft. A ball hexagonal socket joint provides the articulated connection. Rotating by means of the articulated connection, the polishing plate can follow the surface of the workpiece to be processed, so that the polishing covering on the polishing plate always rests on a maximally large area on the surface of the workpiece.

Abstract: The invention relates to a device for reducing pressure variations in a fluid flowing in an aspiration branch of a surgical system, which pressure variations are generated by a pump that delivers in a non-continuous manner in the active operating state, with a diffuser arrangement which is arranged, in the aspiration branch, upstream of the pump in the direction of flow of the fluid. The invention also relates to a surgical system, in particular an ophthalmic microsurgical system for lens surgery.

Abstract: A method for carrying out eye surgery comprises a comparison of images recorded before surgery with images recorded during surgery in order to generate a marker which represents a target orientation of an intraocular lens or a difference between a current orientation and the target orientation of the intraocular lens. An eye surgery system respectively comprises an imaging system which is used during a surgery and has a camera, and a diagnostic system which is used before surgery and which also has a camera. The imaging system used during surgery comprises an image processing device in order to perform a computation based on the recorded images, and in order to determine a respective orientation value, from which a representation of a marker representing the target orientation of the intraocular lens is obtained.

Abstract: A surgical system controls a fluid and includes an irrigation line and a first fluid vessel for holding the irrigation fluid. The irrigation line connects the first fluid vessel to a handpiece. An aspiration input line connects a suction pump to the surgical handpiece and permits the suction pump to draw fluid through the surgical handpiece. A pressure sensor detects the pressure of the fluid in the aspiration input line. An aspiration output line connects the suction pump to a collection vessel to permit fluid from the suction pump to be conducted into the collection vessel. A second fluid vessel accommodates irrigation fluid therein and an aspiration ventilation line connects the second fluid vessel to the aspiration input line. A venting valve in the aspiration ventilation line is switchable in dependence upon the fluid pressure in the aspiration input line.

Abstract: A surgical system (1) for controlling a fluid includes an irrigation line (3), which is connected at one end to a first fluid vessel (2) for holding irrigation fluid (21) and is connected at another end to a surgical handpiece (4). The irrigation fluid (21) can be delivered at a first pressure (p1) to the handpiece (4). The surgical system further includes an aspiration inlet line (7), a second fluid vessel (15) for holding irrigation fluid (22), an aspiration venting line (14), which connects the second fluid vessel (15) to the aspiration inlet line (7), a venting valve (17), which is provided in the aspiration venting line (14) and which can switch in dependence on the fluid pressure in the aspiration inlet line (7) and/or irrigation line (3). The second fluid vessel (15) is connected to a pneumatic pressure system (23) with which the fluid (22) in the second fluid vessel (15) can be subjected to a second pressure (p2) that is higher than the first pressure (p1) in the first fluid vessel (2).

Abstract: A system includes an optical system having two beam splitters (a dichroic beam splitter and a polarizing beam splitter), which are designed to provide three separate beam paths for observing an object. The dichroic beam splitter is designed to separate two beam paths depending on the wavelength of the light of the respective beam path. The polarizing beam splitter is designed such that two beam paths are separated depending on a direction of polarization of the light of the respective beam path. The measuring light is linearly polarized after having passed the polarizing beam splitter and may be influenced with respect to the state of polarization by a retarding plate. The returning measuring light incident on the polarizing beam splitter is linearly polarized and also polarized in such a direction that the returning measuring light is transported through the polarizing beam splitter towards the analyzing detector with a high efficiency.

Abstract: The invention relates to a flow limiter (8) for a fluid flowing in an aspiration branch of a surgical system. which fluid is a surgical fluid and has emulsified particles in a surgical intervention, with a limiter element (81) that comprises at least one flow channel arrangement (9a) with at least one main channel (811) and at least one subsidiary channel (812) that opens into the main channel at an angle of greater than or equal to 90°. The invention also relates to a surgical system, in particular an ophthalmic microsurgical system for lens surgery.

Abstract: The invention relates to a surgical system (1) for controlling a fluid, said system having: an irrigation line (3), which is connected at one end to a first fluid container (2) for holding irrigation fluid (21), and which is connected at another end to a surgical handpiece (40), an aspiration inlet line (7), which is provided from the surgical handpiece (40) to an inlet (9) of a suction pump (8), such that fluid can be sucked through the handpiece (40) by the suction pump (8), a second fluid container (15) for holding the irrigation fluid (22), an aspiration ventilation line (14), which connects the second fluid container (15) to the aspiration inlet line (7), a venting valve (17), which is provided in the aspiration ventilation line (14) and can be switched as a function of a fluid pressure in the aspiration inlet line (7), wherein the second fluid container (15) can be filled via a filling line (18), wherein the filling line (18) is connected at one end (30) to the irrigation line (3), and wherein the fi

Abstract: An ophthalmic surgery system (1) for viewing and measuring optical characteristics of an eye (8), comprises optics (2), an electromechanic displacement mechanism (5), and a controller (3). The optics (2) comprises a first beam path (11) for viewing the eye (8), a second beam path (12) for probing the eye (8) with a probing beam, and a third beam path (13) for detecting a part of a probing beam reflected from the eye (8). The controller (3) is adapted to determine a position of a center of an iris of the eye (8) relative to an optical axis of the first beam path (11a), and to control an actuator of the electromechanic displacement mechanism (5) in order to reposition the second beam path (12) based on the determined position of the center of the iris relative to the optical axis (11a) of the first beam path (11).

Abstract: A system includes an optical system having two beam splitters (a dichroic beam splitter and a polarizing beam splitter), which are designed to provide three separate beam paths for observing an object. The dichroic beam splitter is designed to separate two beam paths depending on the wavelength of the light of the respective beam path. The polarizing beam splitter is designed such that two beam paths are separated depending on a direction of polarization of the light of the respective beam path. The measuring light is linearly polarized after having passed the polarizing beam splitter and may be influenced with respect to the state of polarization by a retarding plate. The returning measuring light incident on the polarizing beam splitter is linearly polarized and also polarized in such a direction that the returning measuring light is transported through the polarizing beam splitter towards the analyzing detector with a high efficiency.