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 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 and an assembly, which comprises an assembly housing having a coupling element for the detachable coupling of the coupling element and the coupling opening of the microscope housing, the objective lens, a wavefront analysis system, which provides a wavefront beam path, and a beam splitter, which is arranged in the wavefront beam path, wherein the objective lens, the beam splitter and the wavefront analysis system are arranged such and the coupling element and the coupling opening are designed 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, wherein the objective lens, the beam splitter and the wavefront analysis system are supported at the assembly housing and are adjustable in their position relative to each other.
Abstract:
Imaging systems are provided allowing examination of different object regions spaced apart in a depth direction by visual microscopy and by optical coherence tomography. An axial field of view and a lateral resolution is varied depending on which object region is examined by the imaging system. The proposed imaging systems are in particular applicable for thorough examination of the human eye.
Abstract:
The invention relates to a balloon catheter (300) for an X-ray applicator and an X-ray applicator (303) for use with the corresponding balloon catheter (300). Said balloon catheter (300) can be filled with a medium (305) and comprises a balloon (304) that expands with respect to the volume and a catheter shaft (301) for inserting the X-ray applicator (303). Said balloon (304) or the catheter shaft (301) comprises a rigid inner end piece (332) in the extension of the catheter shaft (301).
Abstract:
The invention relates to a communication apparatus for a surgical system, with a user interface and at least one driver unit for the control of surgical instruments that are connectable to the driver unit, with a central control unit arranged separately from the user interface, with a first communication device which is designed for data exchange between the user interface and the control unit, and with a second communication device which is separate from the first communication device and which is designed for data exchange between the control unit and the driver unit. The invention also relates to an ophthalmic microsurgical system for lens surgery.
Abstract:
Disclosed is a microscope system (1) for sequentially examining different fluorescent dyes that are accumulated in a fabric located on an object plane (22). An illumination system (70) of the microscope system (1) is provided with at least two different operating states to illuminate the object plane (22) with illuminating radiation. In at least one of the two operating states, the illuminating radiation has a spectrum which encompasses an excitation band (A1) of a first fluorescent dye while being partly free from an excitation band (A2) of another fluorescent dye. An examination system (2) of the inventive microscope system (1) is also provided with two different operating states to supply a first examining beam path (33) for optically representing the object plane (22). In one of the at least two operating states, at least some sections of examining radiation that is guided within the first examining beam path (33) have a spectrum which encompasses the fluorescence band (F1) of the first fluorescent dye while at least some sections of examining radiation that is guided within the first examining beam path (33) are partly free from the fluorescence band (F1) of the first fluorescent dye in at least one other operating state. The disclosed microscope system further comprises a controller (3) which is configured so as to alternatively switch both the illumination system (70) and the examination system (2) into the first operating state or switch both the illumination system (70) and the examination system (2) into the second operating state.
Abstract:
An ophthalmic surgical pressure measuring device, comprising: a first compressible tube, through which an aspiration fluid or irrigation fluid can be transported at a first pressure, to be placed against a first abutment; a second compressible tube, through which aspiration fluid or irrigation fluid can be transported at a second pressure, to be placed against a second abutment; - a connecting element arranged between the first tube and the second tube such that the first pressure and the second pressure can act on the connecting element, a sensor, which can register the position of the connecting element or the force exerted upon the sensor by the connecting element as a reaction to the first pressure and second pressure acting on the connecting element, the first abutment being able to be positioned at a predefined and constant distance from the second abutment such that a clamping force acts on the first tube together with the connecting element and the second tube.
Abstract:
A system and a method for examining an object containing a fluid liquid are provided, wherein the object is illuminated with measuring light and images are temporarily shortly subsequently recorded. The images are evaluated per pixel to determine perfusion data from a high frequency portion above 1 kHz and to determine further information about properties of the object from a low frequency portion below 100 Hz, such as a degree of oxygenation of haemoglobin, a concentration of haemoglobin or a concentration of ICG. This information determined by evaluation is displayed in a form of an image in superposition with a white light image of the object.
Abstract:
The invention relates to a stereoscopic optical system (1), comprising a first optical partial system (2L) with a number of optical elements (31L, 32L, 33L, 34L, 35L, 36L, 37L, 38L, 39L) for provision of a left-handed beam path (4L) of the stereoscopic optical system (1) and a second optical partial system (2R) with a number of optical elements (31R, 32R, 33R, 34R, 35R, 36R, 37R, 38R, 39R) for the provision of a right-handed beam path (4R) of the stereoscopic optical system (1). At least one first optical partial element (38L) of the first optical partial system (2L) comprises a first optical surface (O1) and at least one second optical partial element (38R) of the second optical partial system (2R) comprises a second optical surface (O2). According to the invention, the first and the second optical surfaces (O1, O2) are part surfaces of a common mathematical surface which is rotationally symmetrical about a common main axis (7) of the stereoscopic optical system (1). The invention further relates to a method for production of such a stereoscopic optical system.
Abstract:
The invention relates inter alia to a variable diaphragm (40) for an illumination device (35) and/or for an observation device within an optical observation appliance (10) for imaging an object (11) and/or a first image produced by an object, especially for a stereoscopic observation device. Said variable diaphragm (40) is provided for at least one beam path (30) of the observation device (35) and/or for a beam path (20) of the observation device. The invention is characterized in that the variable diaphragm (40) can at least be partially controlled in order to produce a defined illumination geometry. The variable diaphragm (40) is also adapted to utilize all polarization directions of the light of a light source. The invention also relates to an illumination device, an optical observation device and an optical observation appliance.