Abstract: A device and a method for reading configuration data of an integrated control unit. The method includes: reading data words from memory locations in a predefined direction, starting from a first memory location; determining that a last-read data word from a third memory location is an original data word that is lowest in the hierarchy and, in response to the realization that a second data word is immediately adjacent to the lowest original data word in the hierarchy in the opposite direction to a predefined direction, using the second data word as configuration data.

Abstract: An ophthalmic surgical control apparatus is configured to be connectable to a piezo handpiece for emulsifying an eye lens. The control apparatus includes a frequency generator having a first and a second frequency module. The first frequency module generates a first oscillation signal having a first frequency lower than the ultrasonic resonant frequency of the piezo handpiece. The second frequency module generates a second oscillation signal having a second frequency greater than the ultrasonic resonant frequency of the piezo handpiece. A frequency generator control module controls the first and the second frequency modules.

Abstract: A control arrangement for an ophthalmic surgical system for phacoemulsifying a lens wherein the system includes an aspiration line for drawing off fluid and shattered lens particles of the eye lens and a phaco handpiece having a needle. The aspiration line runs within the needle and is configured to impart ultrasonic energy to the phaco handpiece for shattering the eye lens via a longitudinal vibration of the needle. The control arrangement includes a transmitter configured to irradiate electromagnetic radiation via the aspiration line and a receiver configured to receive at least a part of the radiation; and, a control unit configured to control an absolute value of a parameter of the ophthalmic surgical system in dependence upon the amount of the received electromagnetic radiation.

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 arrangement for an ophthalmic surgical system for phacoemulsifying a lens wherein the system includes an aspiration line for drawing off fluid and shattered lens particles of the eye lens and a phaco handpiece having a needle. The aspiration line runs within the needle and is configured to impart ultrasonic energy to the phaco handpiece for shattering the eye lens via a longitudinal vibration of the needle. The control arrangement includes a transmitter configured to irradiate electromagnetic radiation via the aspiration line and a receiver configured to receive at least a part of the radiation; and, a control unit configured to control an absolute value of a parameter of the ophthalmic surgical system in dependence upon the amount of the received electromagnetic radiation.

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: The disclosure relates to an ophthalmosurgical system that includes a first irrigation fluid source. The system also includes a first irrigation fluid line connected to the first irrigation fluid source at a first end and open at a second end. The system further includes an aspiration fluid line, by which a fluid can be removed from an ocular lens. In addition, the system includes a suction pump, to which the aspiration fluid line is connected, and a second irrigation fluid source, to which a second irrigation fluid line is connected. The second irrigation fluid line is connected to the first irrigation fluid line at a coupling site. The system also includes a first valve, which is disposed between the first end of the first irrigation fluid line and the coupling site, and a second valve, which is disposed between the second irrigation fluid source and the coupling site.

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 control apparatus is configured to be connectable to a piezo handpiece for emulsifying an eye lens. The control apparatus includes a frequency generator having a first and a second frequency module. The first frequency module generates a first oscillation signal having a first frequency lower than the ultrasonic resonant frequency of the piezo handpiece. The second frequency module generates a second oscillation signal having a second frequency greater than the ultrasonic resonant frequency of the piezo handpiece. A frequency generator control module controls the first and the second frequency modules.

Abstract: A transmission element having at least one input and at least one output is described, the transmission element delivering a functional relationship (t=F(R)) between the input quantity (R) applied to the input and the output quantity (t) that may be picked up at the output and the functional relationship (t=F(R)) being stored in a characteristics map, wherein the characteristics map comprises at least one segment having a lower limit (N(bi)) and an upper limit (N(b(i+1)), a function value (t_(i)=F(N(b_i))) being assigned to the lower limit (N(bi)) and a function value (t(i+1)=F(N(b(i+1))) being assigned to the upper limit (N(bi+1)), and the output quantity (t) being interpolated between the lower limit and the upper limit.

Abstract: The invention relates to a method for the individual tracking of metallic hollow bodies, in particular hot-fabricated steel tubes, wherein following a final step of hot-work the individual tube is provided with a distinctive identification on the tube circumference, which is read in the feed region to the subsequent manufacturing or test stations automatically as a video image during transport and independently from the direction of transport. According to the invention, the labeling of the tube circumference is carried out in at least two segment-like sections, the tube circumference being divided, wherein the labeling is carried out in segments with a rotation of less than 360 DEG of the numbering unit and the segments comprise an axial offset relative to the longitudinal axis of the tube, which is greater than the width of the data matrix code.

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: The invention relates to a phacoemulsification device, comprising: —a hand piece having a cutting tip for emulsifying a lens, wherein the tool holder is provided with piezoelectric elements for deflecting the cutting tip, —a regulator, the input of which is electrically connected to the tool holder, for receiving an actual value that is proportional to the voltage induced on the piezoelectric elements of the tool holder that is constantly oscillating on the natural frequency thereof, said regulator being suitable for comparing the actual value with a predetermined target value, thus determining an actuating variable, —a power amplifier, the input of which is connected to the regulator in order to receive the actuating variable, and the output of which is connected to the tool holder, wherein the tool holder may be actuated simultaneously with the receipt of the actual value and a power output to the tool holder being able to occur, such that a direct feedback coupling may be attained, thus enabling the tool h

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: The invention relates to a method for the individual tracking of metallic hollow bodies, in particular hot-fabricated steel tubes, wherein following a final step of hot-work the individual tube is provided with a distinctive identification on the tube circumference, which is read in the feed region to the subsequent manufacturing or test stations automatically as a video image during transport and independently from the direction of transport. According to the invention, the labeling of the tube circumference is carried out in at least two segment-like sections, the tube circumference being divided, wherein the labeling is carried out in segments with a rotation of less than 360 DEG of the numbering unit and the segments comprise an axial offset relative to the longitudinal axis of the tube, which is greater than the width of the data matrix code.

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 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: The disclosure relates to an ophthalmosurgical system that includes a first irrigation fluid source. The system also includes a first irrigation fluid line connected to the first irrigation fluid source at a first end and open at the other end. The system further includes an aspiration fluid line, by which fluid can be removed from the ocular lens. In addition, the system includes a suction pump, to which the aspiration fluid line is connected, and a second irrigation fluid source, to which a second irrigation fluid line is connected. The second irrigation fluid line is connected to the first irrigation fluid line at a coupling site. The system also includes a first valve, which is disposed between the first end of the first irrigation fluid line and the coupling site, and a second valve, which is disposed between the second irrigation fluid source and the coupling site.