Abstract: A cartridge for a panel of an ophthalmic surgical system for treating an eye is configured for insertion in a cartridge accommodation region of the panel and has at least one fluid pump for conveying a treatment fluid, the fluid pump has a pump chamber and a drive chamber separated from the pump chamber with a partition element that is at least regionally deflectable, wherein a drive fluid is feedable to the drive chamber and the treatment fluid is feedable to the pump chamber. The partition element has at least one plate element made of an at least electrically conductive or at least ferromagnetic material, said plate element also being deflected in the case of a deflection of at least one region of the partition element. Further, a panel and an ophthalmic surgical system are provided.

Abstract: An ophthalmosurgical control module device includes a first convolution function device configured to output a quantity, convolved with a first convolution function, of a time derivative of the first measurement signal, a first comparison device configured to compare the output quantity of the time derivative of the first measurement signal and the first threshold value with each other and output a first comparison result, a second convolution function device, a second threshold value device, a second comparison device configured to output a second comparison result, a first evaluation device configured to receive and evaluate the first comparison result and the second comparison result and output a first evaluation signal, and an activation device configured to receive the first evaluation signal and, in accordance with the first evaluation signal, to make available a control signal for controlling a parameter of an ophthalmosurgical appliance.

Abstract: An ophthalmosurgical appliance includes an irrigation fluid line through which irrigation fluid can flow from an irrigation fluid container to an ophthalmosurgical handpiece for phacoemulsification, a first fluid pump configured to convey the irrigation fluid to the handpiece, a first volumetric flow determination device configured to determine a first volumetric flow, an aspiration fluid line, a second fluid pump configured to convey aspiration fluid to the collecting container, a second volumetric flow determination device configured to determine a second volumetric flow, a difference element configured to form a difference from the first volumetric flow and the second volumetric flow to form a differential volumetric flow signal, and a control device configured to determine, from the differential volumetric flow signal and the irrigation fluid setpoint pressure signal, a signal for an irrigation fluid control pressure to supply this signal at an output of the control device to the first fluid pump.

Abstract: Provided is a controller for an electrical drive unit—which drives a treatment needle—of an ophthalmosurgical handpiece, comprising a generator unit, which provides a control variable with control oscillation, wherein the control oscillation has a first oscillation component at a first control frequency, wherein the first oscillation component is settable depending on a first ratio of a mechanical deflection amplitude of the treatment needle to the electrical control variable at the first control frequency. It is proposed that the generator unit is configured to provide the control oscillation of the control variable with at least one further oscillation component at a further control frequency, different than any other control frequency, in such a way that the further oscillation component is settable depending on a further ratio of the mechanical deflection amplitude of the treatment needle to the electrical control variable at the respective further control frequency.

Abstract: The invention is directed to a method of operating an ophthalmosurgical system which includes a console for accommodating an irrigation fluid vessel containing irrigation fluid and a cassette, insertable into the console, for directing the irrigation fluid to a surgical instrument for an eye to be treated. An irrigation fluid flow path leads from the irrigation fluid vessel to the cassette and to the surgical instrument. A first fluid pump includes a first pump chamber having a first volume and a first drive chamber separated therefrom by a first elastic partition and having a second volume. A second fluid pump is arranged in parallel to the first fluid pump and includes a second pump chamber having a third volume and a second drive chamber separated therefrom by a second elastic partition and having a fourth volume.

Abstract: The invention is directed to an ophthalmosurgical system which includes a console for accommodating an irrigation fluid vessel containing irrigation fluid and a cassette, insertable into the console, for directing the irrigation fluid to a surgical instrument for an eye to be treated. An irrigation fluid flow path leads from the irrigation fluid vessel to the cassette and to the surgical instrument. A first fluid pump includes a first pump chamber having a first volume and a first drive chamber separated therefrom by a first elastic partition and having a second volume. A second fluid pump is arranged in parallel to the first fluid pump and includes a second pump chamber having a third volume and a second drive chamber separated therefrom by a second elastic partition and having a fourth volume. The first volume or the third volume has a magnitude within the range from 1 to 25 cm3.

Abstract: The invention is directed to an ophthalmosurgical system which includes a console for accommodating an irrigation fluid vessel containing irrigation fluid and a cassette, insertable into the console, for directing the irrigation fluid to a surgical instrument for an eye to be treated. An irrigation fluid flow path leads from the irrigation fluid vessel to the cassette and to the surgical instrument. A first fluid pump includes a first pump chamber having a first volume and a first drive chamber separated therefrom by a first elastic partition and having a second volume. A second fluid pump is arranged in parallel to the first fluid pump and includes a second pump chamber having a third volume and a second drive chamber separated therefrom by a second elastic partition and having a fourth volume. The first volume or the third volume has a magnitude within the range from 1 to 25 cm3.

Abstract: The invention is directed to a method of operating an ophthalmosurgical system which includes a console for accommodating an irrigation fluid vessel containing irrigation fluid and a cassette, insertable into the console, for directing the irrigation fluid to a surgical instrument for an eye to be treated. An irrigation fluid flow path leads from the irrigation fluid vessel to the cassette and to the surgical instrument. A first fluid pump includes a first pump chamber having a first volume and a first drive chamber separated therefrom by a first elastic partition and having a second volume. A second fluid pump is arranged in parallel to the first fluid pump and includes a second pump chamber having a third volume and a second drive chamber separated therefrom by a second elastic partition and having a fourth volume.

Abstract: The invention relates to a handpiece for the phacoemulsification of an eye lens, having a needle with an aspiration line arranged therein for transporting an aspiration fluid and at least one drive element for generating a longitudinal wave, wherein the drive element is arranged in such a way that the longitudinal wave can be coupled directly into the aspiration fluid.

Abstract: The invention is directed to an ophthalmosurgical system which includes a console for accommodating an irrigation fluid vessel containing irrigation fluid and a cassette, insertable into the console, for directing the irrigation fluid to a surgical instrument for an eye to be treated. An irrigation fluid flow path leads from the irrigation fluid vessel to the cassette and to the surgical instrument. A first fluid pump includes a first pump chamber having a first volume and a first drive chamber separated therefrom by a first elastic partition and having a second volume. A second fluid pump is arranged in parallel to the first fluid pump and includes a second pump chamber having a third volume and a second drive chamber separated therefrom by a second elastic partition and having a fourth volume. The first volume or the third volume has a magnitude within the range from 1 to 25 cm3.

Abstract: An ophthalmic surgical pulse control apparatus has a pulse generator, which, during a switch-on duration of the pulse generator, generates pulses having a pulse duration during which a needle of a phacoemulsification handpiece substantially vibrates at resonance and which, during a switch-on duration of the pulse generator, produces pulse pauses having a pulse pause duration during which the needle vibrates only minimally or not at all. A pulse with a follow-on pulse pause forms a pulse packet having a pulse packet duration. The pulse generator generates pulse packets which immediately follow one another and the sequence of the values of pulse duration and pulse pause duration of sequential pulse packets during the entire switch-on duration of the pulse generator is an aperiodic sequence.

Abstract: An ophthalmic surgical pulse control apparatus has a pulse generator, which, during a switch-on duration of the pulse generator, generates pulses having a pulse duration during which a needle of a phacoemulsification handpiece substantially vibrates at resonance and which, during a switch-on duration of the pulse generator, produces pulse pauses having a pulse pause duration during which the needle vibrates only minimally or not at all. A pulse with a follow-on pulse pause forms a pulse packet having a pulse packet duration. The pulse generator generates pulse packets which immediately follow one another and the sequence of the values of pulse duration and pulse pause duration of sequential pulse packets during the entire switch-on duration of the pulse generator is an aperiodic sequence.

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 a handpiece for the phacoemulsification of an eye lens, having a needle with an aspiration line arranged therein for transporting an aspiration fluid and at least one drive element for generating a longitudinal wave, wherein the drive element is arranged in such a way that the longitudinal wave can be coupled directly into the aspiration fluid.

Abstract: An ophthalmic surgical apparatus for phacoemulsification includes an aspiration line to transport an aspiration fluid and particles of an eye generated by phacoemulsification. A suction vacuum pump draws in the aspiration fluid and the particles of the eye via the aspiration line and a flow limiter adjustably limits the flow to a flow lying in a range of 5 milliliter to 100 milliliter per minute. The aspiration line defines an inner cross section and has an outer wall. The flow limiter is arranged upstream of the suction vacuum pump and has at least two press-on elements. The elements are each configured to contact engage the outer wall so as to cause the inner cross section to be reduced. The press-on elements are disposed mutually spaced so as to define a predetermined distance therebetween and are arranged to be rotatably movable in a rotational direction about a common rotational axis.

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.