Console and cassette for an ophthalmic surgical system as well as an ophthalmic surgical system

Abstract

The invention relates to a console for an ophthalmic surgical system, comprising a cassette holder (2) into which a cassette, used to control the flow of an irrigation fluid to a surgical instrument for an eye to be treated, can be inserted, and a clamping device (6) associated with the cassette holder (2) for releasably securing a cassette to the console. The clamping device (6) is adjustable between an open position, in which a cassette can be inserted into and removed from the cassette holder (2), a positioning position, in which a cassette is at least partially gripped and positioned in the cassette holder (2) by pivoting the clamping device (6), and a clamping position, in which a cassette is secured to the cassette holder (2) by a linear adjustment of the clamping device (6).The clamping device (6) comprises at least two clamping hooks (7) which can be pivoted from the open position to the positioning position against the force of a return spring (8). Each clamping hook (7) has a lever arm (10) which is arranged such that when the cassette is inserted into the cassette receptacle (2), the clamping hook (7) pivots against the force of the return spring (8). The clamping hook (7) is connected to a pull rod (22) via a locking pin, the locking pin forming the pivot axis (9) of the clamping hook (7). A wedge surface is connected to the clamping hook (7) which preloads the return spring (8) when the clamping device (6) pivots from the open position to the positioning position.

Description

[0001] The invention relates to a console according to the preamble of claim 1. Furthermore, the invention relates to a cassette for an ophthalmic surgical system and an ophthalmic surgical system.

[0002] There are several surgical techniques for treating clouding of the lens of the eye, known medically as cataracts. The most common technique is phacoemulsification, in which a thin hollow needle is inserted into the lens and stimulated to produce ultrasonic vibrations. The vibrating hollow needle emulsifies the lens in its immediate vicinity in such a way that the resulting lens particles can be suctioned out through a line using a pump. A rinsing fluid is supplied, with the lens particles and fluid being suctioned out through an aspiration line. Once the lens has been completely emulsified and removed, a new artificial lens can be inserted into the empty capsular bag, allowing the patient treated in this way to regain good vision.

[0003] The ophthalmic surgical system commonly used for this purpose generally comprises a console to which an irrigation fluid container containing irrigation fluid can be coupled. This can be achieved, for example, using a stand with a hook on which the irrigation fluid container can be hung. The ophthalmic surgical system also has a cassette that is inserted into the console. The cassette serves to direct the irrigation fluid to a surgical instrument for the eye to be treated. The surgical instrument is used to crush a lens of the eye, for example by phacoemulsification, whereby the resulting lens particles and the irrigation fluid can be suctioned off with the cassette. The irrigation fluid is pumped from the irrigation fluid container first to the cassette, from there to the surgical instrument, and finally back into the cassette.

[0004] The precise and defined positioning and attachment of the cassette to the console is particularly critical. It must be ensured that the cassette is firmly and stably connected to the console during operation to guarantee smooth function and appropriate accuracy. Since the cassette is a sterile, disposable product that is usually made from injection-molded components, it must also be ensured that the cassette is subjected to as little mechanical stress as possible when inserted into the console. Only then can the cassette be manufactured using as little material as possible and thus cost-effectively. It must also be ensured that the cassette can be connected to the unsterile console under sterile conditions by a sterile person without there being a risk that the sterile person could become unsterile.In addition, the cassette must be able to be changed as easily as possible in order not to adversely affect the surgical procedure and to keep the turnaround times between two operations as short as possible.

[0005] DE 603 ​​03 057 T2 discloses a console in which the cassette is clamped by two pivoting arms that are pivoted by a motor. However, in DE 603 ​​03 057 T2, it has proven disadvantageous that adjusting the pivoting arms requires a very complex design. Furthermore, the prior art solution has proven problematic in that the pivoting movement for clamping the cassette increases the risk of damage to the cassette, and the cassette must be constructed accordingly robustly, which adversely impacts manufacturing costs.

[0006] US 2014 / 0 178 215 A1 describes a clamping system for a surgical cassette.

[0007] US 2008 / 0 114 311 A1 discloses an eye treatment system with a console having a cassette holder for receiving a cassette.

[0008] EP 3 021 803 B1 relates to a surgical console for phacoemulsification with a cassette holder suitable for holding a surgical cassette.

[0009] The present invention is based on the object of providing an improved console. Furthermore, it is the object of the invention to provide an improved cassette and an improved ophthalmic surgical system.

[0010] The object relating to the console is achieved according to the invention with a console according to claim 1.

[0011] The different movements of the clamping device - the pivoting movement for positioning the cassette on the one hand and the linear adjustment of the clamping device for actually clamping the cassette on the other - create a clear separation between the two positions, "positioning position" and "clamping position". This also ensures that the force acting on the cassette can be precisely controlled when the cassette is actually clamped to the cassette holder, and the parallel adjustment of the clamping device ensures that the contact area between the clamping device and the cassette always remains constant. Splitting up the movements also reduces the risk of the user accidentally trapping a finger or other body part in the clamping device when moving the clamping device from the positioning position to the clamping position.

[0012] It has proven particularly useful in this case if the console comprises at least one actuator for the linear adjustment of the clamping device. By activating the actuator, the clamping device in particular is adjusted linearly from the positioning position into the clamping position against the cassette holder, whereby a cassette located in the cassette holder is clamped therein. It has proven particularly advantageous if the actuator is pneumatically adjustable and is preferably designed as a cylinder with a piston that can be acted upon by a pressure medium, such as compressed air or hydraulic fluid. In this case, it is also provided in particular that only one actuator is provided for the clamping device. Within the scope of the invention, however, the actuator can also be designed multiple times and / or as an electric motor.In a particularly preferred embodiment, the actuator is moved from the positioning position to the clamping position against the force of a return element. If the actuator is deactivated, i.e., depressurized or de-energized, the clamping device is automatically moved from the locking position back to the positioning position by the return element. In other words, the clamping device is moved away from the cassette holder by the return element, which can be achieved, for example, by one or more preloaded springs.

[0013] In this context, it has also proven useful to have at least one sensor located in the cassette holder that detects a cassette inserted into the cassette holder to trigger the adjustment of the clamping device from the positioning position to the clamping position. Thus, when a cassette is inserted into the cassette holder, the sensor, which is preferably designed as a distance sensor, for example, an inductive proximity sensor, detects the cassette and only then activates the adjustment of the actuator to linearly adjust the clamping device from the positioning position to the clamping position.

[0014] It has also proven advantageous if the clamping device comprises at least two clamping hooks, each of which can be pivoted from the open position into the positioning position against the force of a return spring. The clamping hooks, which are particularly preferably aligned essentially vertically, make it particularly easy to clamp the cassette in the cassette holder and achieve improved rigidity of the cassette, particularly when the cassette is inserted upright into the cassette holder. Due to the route of the fluidic channels within the cassette, the rigidity of the cassette is higher in the transverse direction, which runs horizontally when inserted, than in the longitudinal direction, which runs vertically when inserted.Furthermore, the vertical clamping of the cassette allows a shorter cassette length to be achieved compared to clamping the cassette at its top and bottom, which also increases the rigidity of the cassette. In addition, the return springs ensure that the clamping hooks and thus the clamping device can be moved from the positioning position back into the open position when the cassette is to be removed from the cassette holder. However, the invention also provides for the cassette to be clamped at its transverse sides rather than at its long sides, as in the present case. Furthermore, the invention also provides for the long sides of the cassette to run horizontally and the short sides to run vertically.

[0015] It has also proven advantageous if a lever arm is formed on each clamping hook, which is arranged in such a way that when the cassette is inserted into the cassette holder, the clamping hook pivots against the force of the return spring. When the cassette is inserted, the lever arms of the clamping hooks are acted upon by the cassette, whereby the clamping device pivots about the pivot axis and is automatically transferred from the open position into the positioning position. In the positioning position, the clamping hooks at least partially grip the cassette, which simply prevents the inserted cassette from tipping out of the cassette holder.

[0016] It has also proven advantageous if the clamping hook is connected to a pull rod via a locking pin, and if the locking pin forms the pivot axis of the clamping hook. This allows the clamping device to be easily pivoted between the open position and the positioning position. Furthermore, for the linear adjustment of the clamping device from the positioning position to the clamping position, only the pull rod needs to be pulled.

[0017] To achieve the preload of the clamping device, it has proven particularly advantageous to have a wedge surface connected to the clamping hook, which preloads the return spring when the clamping device is pivoted from the open position to the positioning position. This then particularly facilitates the ejection of the cassette from the cassette holder. In this case, it is particularly advantageous to use an adjusting sleeve, which is acted upon by the wedge surface and adjusted against the force of the return spring.

[0018] In this context, it has also proven advantageous if the cassette holder has a retaining clip that is preferably oriented perpendicular to the clamping device. The retaining clip provides additional security for the cassette. The retaining clip is preferably arranged at the top of the cassette holder relative to the base of the console. This means that the cassette is ultimately secured against accidental tipping out by the retaining clip attached at the top. It is particularly preferred if the retaining clip is spring-loaded. The spring bearing and appropriately shaped insertion bevels on the retaining clip and / or on the cassette ensure that when the cassette is inserted manually, the retaining clip can first deflect or swing out upwards against the spring force and then snap over the inserted cassette, thereby additionally securing it in the cassette holder.The retaining clip also makes it easier to release the cassette from the cassette holder. When the clamping device is in the positioning position, meaning the clamping device is pivoted in but not linearly adjusted against the console, the user simply needs to lift the retaining clip against the spring, which causes the clamping hooks – assisted by the return springs – to pivot out again, ejecting the cassette, which can then be removed from the cassette holder by the user.

[0019] It has also proven advantageous if the retaining clip is arranged in such a way that adjusting the retaining clip actuates a switch that switches the actuator. In particular, in the clamping position, i.e. when the cassette is clamped, adjusting the retaining clip can actuate the switch that switches the actuator so that the clamping device is moved from the clamping position to the positioning positions. Alternatively, the user can also actuate the actuator via a user interface (GUI) formed on the console. As described above, the retaining clip is also adjusted when the cassette is inserted, which actuates the switch and thus switches the actuator to move the clamping device from the positioning position to the clamping position. In a particularly preferred embodiment, this is only possible when the presence of a cassette in the cassette holder is detected by the sensors.

[0020] To facilitate the attachment of the cassette to the cassette holder, it has proven advantageous to provide guide rails on the cassette holder. The guide rails, which are preferably parallel to the clamping device, are preferably short and, according to the invention, extend over less than 20%, preferably over less than 15%, and particularly preferably over less than 10% of the length of the cassette. This allows the cassette to be inserted diagonally from above into the cassette holder.

[0021] In order to enable a defined alignment of the cassette, it has also proven advantageous if at least two alignment pins are arranged on the cassette holder for aligning the cassette. These alignment pins, which engage in the cassette, can ensure a defined seat of the cassette, especially when inserting the cassette. The two alignment pins and the flat surface of the cassette holder, against which the cassette is pressed in the clamped position, ensure a defined spatial positioning of the cassette, i.e. fixation of the cassette in all three translational and rotational spatial directions. In this context, it has also proven advantageous if at least one of the alignment pins is arranged offset to the longitudinal axis of the cassette holder. The longitudinal axis is aligned vertically.

[0022] The object relating to the cassette is achieved according to the invention by a cassette for accommodation in a console of an ophthalmic surgical system, in which a slot-shaped recess and a receptacle are formed in the cassette, which serve to receive alignment pins of a cassette receptacle of a console of the ophthalmic surgical system. The slot-shaped recess makes it possible to first place the cassette at an angle onto one of the alignment pins and then manually tilt it towards the cassette receptacle, with the other alignment pin then dipping into the receptacle of the cassette, thereby aligning the cassette with the cassette receptacle. The slot-shaped recess in particular has proven particularly positive, since - for example, when using another receptacle instead of the slot-shaped recess - the system would otherwise be statically overdetermined.

[0023] To simplify cassette production, it has also proven advantageous if the slot-shaped recess and / or the first receptacle are formed at least partially on all housing parts of the cassette. This makes it possible to align the individual parts of the cassette, which are joined together by laser welding, relative to one another before the actual joining process. For this purpose, the dimensions of the recess formed in the individual housing parts of the cassette and the receptacle are designed and coordinated in such a way that any manufacturing deviations that may occur can be minimized and the positioning of the components relative to one another can be optimized. The same alignment pins that are also formed on the cassette receptacle can be used to align the housing parts of the cassette.Typically, the individual housing parts of the cassette are successively connected to each other until the cassette has its final shape.

[0024] The object relating to the ophthalmic surgical system is achieved according to the invention by an ophthalmic surgical system having a console according to one of claims 1 to 9 and having a cassette according to one of claims 10 to 11.

[0025] In the following, the invention is explained in more detail using several exemplary embodiments shown in the drawings; in which: Fig. 1 a perspective view of a console, Fig. 2 a perspective detailed view of a cassette holder of the console with a clamping device in an open position, Fig. 3 a perspective detailed view of the cassette holder with a cassette attached, Fig. 4 a perspective detailed view of a cassette held in the cassette holder of the console with the clamping device in a positioning position, Fig. 5 a detailed view of the clamping device, Fig. 6 a partially sectioned view of the cassette holder, and Fig. 7 an exploded view of the cassette.

[0026] Fig. 1 shows a perspective view of an ophthalmic surgical system 100. On the front side of the console 1, a cassette holder 2 is formed, into which a cassette 3 for controlling the flow of an irrigation fluid to a surgical instrument (not shown in the drawing) for an eye to be treated can be inserted. The irrigation fluid container of the irrigation fluid - usually a bottle - can be suspended from a stand 4 that is attached to the console 1. In order to be able to adjust the position of the console 1 during the operation, the console 1 is provided with wheels 5, with which the console 1 can be moved. As will be explained in particular below with reference to the Fig. As will be explained in more detail in Figures 2 to 4, the console 1 has a clamping device 6 associated with the cassette holder 2. With the aid of this clamping device 6, the cassette 3 can be releasably secured to the console 1. Furthermore, the console 1 is also associated with a user interface 300, which is also referred to as a graphical user interface (GUI).

[0027] The exact procedure for inserting the cassette 3 into the cassette holder 2 and removing it from the cassette holder 2 is described below with reference to the Fig. 2 to 4 are explained in detail. Fig. 2 shows the cassette holder 2 before inserting the cassette 3 into the cassette holder 2, with the clamping device 6 in the open position. Fig. 3 shows the concrete process of inserting the cassette 3 into the cassette holder 2 and Fig. 4 finally shows the clamping device 6 in the positioning position in which the clamping device 6 is pivoted over the cassette 3.

[0028] In the in the Fig. 2, the user can insert the cassette 3 into the cassette holder 2 and remove a cassette 3 from the cassette holder 2. In the embodiment shown, the clamping device 6 comprises two clamping hooks 7, each of which can be pivoted against the force of a return spring 8 about a pivot axis 9 from the position shown in the Fig. 2 shown open position into a position shown in the Fig. 4. In the open position, the clamping hooks 7 of the clamping device 6 are adjusted outwards, so that the clamping hooks 7 do not hinder the insertion of the cassette 3 into the cassette holder 2. In the positioning position, the cassette 3 is then at least partially encompassed by a pivoting of the clamping device 6 - or the clamping hooks 7 - and positioned in the cassette holder 2. As the Fig. 2, the clamping hooks 7 are aligned substantially vertically and the cassette 3 is gripped on its vertically extending longitudinal sides. As will be explained in detail below with reference to the Fig. 5 and Fig. As explained in Figure 6, each clamping hook 7 is assigned a lever arm 10. This lever arm 10 is acted upon by the cassette 3 when the cassette 3 is inserted into the cassette holder 2 and causes the corresponding clamping hook 7 to pivot against the force of the return spring 8 from the open position into the positioning position.

[0029] The console 1 also includes an actuator 11, with which it is possible to adjust the clamping hooks 7 linearly from the positioning position in the direction of the cassette holder 2 into a clamping position, in which the cassette 3 is secured to the cassette holder 2 by a clamping effect. The actuator 11 is designed as a cylinder 12, the piston of which can be acted upon by a pressure medium in order to pull the clamping hooks 7 from the positioning position in the clamping position and thus in the direction of the cassette holder 2, whereby the cassette 3 is ultimately clamped to the cassette holder 2.

[0030] Fig. 2 further shows that two alignment pins 13.1, 13.2 are arranged on the cassette holder 2, of which a first alignment pin 13.1 lies on a longitudinal axis 14 of the cassette holder 2, while a second alignment pin 13.2 is spaced from the longitudinal axis 14. The alignment pins 13.1, 13.2 serve to precisely position the cassette 3 on the cassette holder 2. In addition, in the embodiment shown, two sensors 15 are arranged in the cassette holder 2, which detect when the cassette 3 is inserted into the cassette holder 2. The sensors 15, which are preferably designed as inductive proximity sensors, are only triggered when the cassette 3 is in the immediate vicinity of the sensors 15, i.e. when the clamping device 6 is already in the positioning position.When the cassette 3 is detected in the positioning position by the sensors 15, the actuator 11 can be activated, whereby the clamping device 6 is linearly adjusted from the positioning position to the clamping position.

[0031] When inserting the cassette 3 into the cassette holder 2, as shown in the Fig. 3 - the cassette 3 is first placed diagonally onto the first alignment pin 13.1, which is located on the longitudinal axis 14 of the cassette holder 2 and which is in the Fig. 3 is only indicated by a dashed line. The placement of the cassette 3 onto the first alignment pin 13.1 is facilitated by guide rails 16 formed on the cassette holder 2, the length of which, in the illustrated embodiment, is less than 10% of the length of the cassette 3. If the user now pushes the cassette 3 further into the cassette holder 2, the cassette 3 comes to rest against a retaining clip 17, which is oriented perpendicular to the clamping device 6 and is spring-loaded. By means of an insertion bevel 18 which is formed on the holding clamp 17, the holding clamp 17 is deflected against the force of a spring 19 and engages over the cassette 3 inserted into the cassette holder 2. At the same time, when inserted, the cassette 3 acts on the lever arms 10 of the clamping hooks 7, whereby these are transferred from the open position into the positioning position, i.e. pivot inwards and at least partially encompass the cassette 3.The clamping device 6 is now in the positioning position shown in the . Fig. 4 is shown.

[0032] The two alignment pins 13.1, 13.2 then engage in the cassette 3, as will be explained below with reference to Fig. 7. When the holding clamp 17 is adjusted, a switch 20 is also actuated, which switches the actuator 11. Since the cassette 3 is now very close to the sensors 15, the presence of the cassette 3 is detected, so that the actuator 11 is switched on and the clamping device 6 is moved linearly in the direction of the cassette holder 2 into the clamping position. In the exemplary embodiment shown, both the sensors 15 and the switch 20 actuated by the holding clamp 17 are ultimately necessary to activate the actuator 11 and move the clamping device 6 from the positioning position into the clamping position. If the cassette 3 is now to be removed from the cassette holder 2 again, only the holding clamp 17 must be opened manually, which initially actuates the switch 20 switching the actuator 11 and deactivates the actuator 11.Since the actuator 11 and thus the clamping device 6 are pre-tensioned in the clamping position by the force of a return element not shown in the drawing, when the actuator 11 is switched off, the clamping device 6 is moved away from the cassette holder 2 into the positioning position. Since the clamping hooks 7 are pre-tensioned by the return springs 8, the clamping device 6 is now automatically moved from the positioning position into the open position, i.e. the clamping hooks 7 pivot outwards, thus releasing the cassette 3, and the cassette 3 is ejected from the cassette holder 2 by the lever arms 10 of the clamping hooks 7 and can be removed from the console 1 by the user. The ejection of the cassette 3 from the cassette holder 2 can also be initiated by actuating the user interface 300.In the illustrated embodiment, the actuator 11 is designed such that, even in a de-energized and / or pressureless state, the elastic return element moves the clamping device 6 from the clamping position to the positioning position when the retaining clip 17 is manually opened. This ensures that the cassette 3 can always be removed from the console 1, even when the console 1 is deactivated.

[0033] The mechanical functioning of the adjustment of the clamping device 6 between the open position, the positioning position and the clamping position is described below with reference to the Fig. 5 and Fig. 6 is explained in more detail. From the Fig. 5 shown detailed view of one of the clamping hooks 7 of the clamping device 6 and in particular from the partially sectioned view of the clamping device 6, which in the Fig. 6, it is clear that the clamping hook 7 is pivotably but axially fixedly connected to a pull rod 22 via a locking pin 21, the locking pin 21 simultaneously forming the pivot axis 9 of the clamping hook 7. When the cassette 3 is inserted into the cassette holder 2, the cassette 3 acts on the lever arms 10 formed on the clamping hook 7, whereby the clamping hooks 7 are pivoted about the pivot axes 9. In the process, a wedge surface 23 connected to the clamping hook 7 is also pivoted, whereby an adjusting sleeve 24 is adjusted against the force of the return spring 8 and preloads it. If the actuator 11 is now switched on, the pull rods 22 and the clamping hooks 7, which are each connected to the pull rods 22 via the locking pin 21, are moved linearly into the clamping position, whereby the cassette 3 located in the cassette holder 2 is clamped in this position.

[0034] Fig. 7 shows an exploded view of a cassette 3 and the cassette holder 2. The Fig. 7 it can be clearly seen that a slot-shaped recess 25 and at least one receptacle 26 for receiving the first alignment pin 13.1 and the second alignment pin 13.2 of the cassette receptacle 2 of the console 1 of the ophthalmic surgical system 100 are formed in the cassette 3, whereby the cassette 3 is aligned with the cassette receptacle 2, as shown in the Fig. 7 is indicated by the dashed lines. The slot-shaped recess 25 and the receptacle 26 are formed at least partially on all three housing parts 200.1, 200.2, 200.3 of the cassette 3 and facilitate the manufacturing process of the cassette 3, since the slot-shaped recesses 25 and the receptacles 26, which are formed in the individual housing parts 200.1, 200.2 and 200.3, engage with each other during assembly and enable alignment of the components with each other. Fig.7 also shows that the cassette is provided with a handle 27 into which the user can insert, for example, his index finger in order to insert the cassette 3 into the cassette holder 2 and to remove it again therefrom. List of reference symbols 1 console 2 cassette recording 3 cassettes 4 stands 5 wheel 6 clamping device 7 clamp hooks 8 Return spring 9 Swivel axis lever arm 10 11 Actuator 12 cylinders 13.1 first alignment pin 13.2 second alignment pin 14 Cassette holder longitudinal axis 15 Sensor 16 Guide rail 17 Retaining clip 18 insertion bevel 19 spring 20 switches 21 locking pin 22 Drawbar 23 Wedge surface 24 adjusting sleeve 25 slotted recess 26 recording 27 Handle 100 ophthalmic surgical system 200.1 Housing part 200.2 Housing part 200.3 Housing part 300 user interface

Claims

[1] Console (1) for an ophthalmic surgical system (100), comprising a cassette holder (2) into which a cassette (3) serving to control the flow of an irrigation fluid to a surgical instrument for an eye to be treated can be inserted, and comprising a clamping device (6) associated with the cassette holder (2) for releasably securing a cassette (3) to the console (1), wherein the clamping device (6) is adjustable between an open position in which a cassette (3) can be inserted into the cassette holder (2) and removed from the cassette holder (2), a positioning position in which a cassette (3) is at least partially encompassed and positioned in the cassette holder (2) by pivoting the clamping device (6), and a clamping position in which a cassette (3) is secured to the cassette holder (2) by linear adjustment of the clamping device (6).wherein the clamping device (6) comprises at least two clamping hooks (7), each of which can be pivoted from the open position into the positioning position against the force of a return spring (8), a lever arm (10) is formed on each of the clamping hooks (7), which lever arm is arranged such that when the cassette (3) is inserted into the cassette holder (2), pivoting of the clamping hook (7) against the force of the return spring (8) is realized, the clamping hook (7) is connected to a pull rod (22) via a locking pin (21), the locking pin (21) forming the pivot axis (9) of the clamping hook (7), and a wedge surface (23) is connected to the clamping hook (7), which wedge surface pretensions the return spring (8) when the clamping device (6) is pivoted from the open position into the positioning position. [2] Console (1) according to claim 1, characterized bythat the console (1) comprises at least one actuator (11) for linearly adjusting the clamping device (6). [3] Console (1) according to claim 1 or 2, characterized by in that, in order to trigger the adjustment of the clamping device (6) from the positioning position into the clamping position, at least one sensor (15) detecting a cassette (3) inserted into the cassette holder (2) is arranged in the cassette holder (2). [4] Console (1) according to claim 1, 2 or 3, characterized by that the clamping hooks (7) are aligned substantially vertically. [5] Console (1) according to one of the preceding claims, characterized by that the cassette holder (2) has a retaining clip (17) which is preferably oriented perpendicular to the clamping device (6). [6] Console (1) according to claim 5, characterized by that the retaining clip (17) is arranged in such a way that an adjustment of the retaining clip (17) actuates a switch (20) which switches the actuator (11). [7] Console (1) according to one of the preceding claims, characterized by that guide rails (16) are formed on the cassette holder (2). [8] Console (1) according to one of the preceding claims, characterized by that at least two alignment pins (13.1, 13.2) are arranged on the cassette holder (2) for aligning the cassette (3). [9] Console (1) according to claim 8, characterized by that at least one of the alignment pins (13.2) is arranged offset to the longitudinal axis (14) of the cassette holder (2). [10] Cassette (3) for receiving in a console (1) according to one of claims 1 to 9 of an ophthalmic surgical system (100), characterized by that a slot-shaped recess (25) and at least one receptacle (26) are formed in the cassette (3) and serve to receive alignment pins (13.1, 13.2) of a cassette receptacle (2) of a console (1) of the ophthalmic surgical system (100). [11] Cassette (3) according to claim 10, characterized by that the slot-shaped recess (25) and / or the at least one receptacle (26) are formed at least partially on all housing parts (200) of the cassette (3). [12] Ophthalmic surgical system (100) with a console (1) according to one of claims 1 to 9 and with a cassette (3) according to one of claims 10 to 11.

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