Micromanipulator for manipulating a laser beam

Abstract

A micromanipulator (1) for manipulating a laser beam (L in , L scan ) of a laser surgery device, comprising a scanner (10) for generating at least one scan figure (60) and at least one control element for controlling the scanner (10), wherein the control element comprises a rotating element (51), wherein a rotation (D d) of the rotating element (51) causes a rotation (D s) of the scan figure (60), which depends on the size and / or speed of the rotation (D d) of the rotating element (51), wherein the rotating element (51) can rotate freely without limiting the angle of rotation and the scan figure (60) follows this free rotation without restrictions, and a laser surgery device with said micromanipulator (1).

Description

[0001] The present invention relates to a micromanipulator for manipulating a laser beam of a laser surgery device, comprising a scanner for generating at least one scan image and at least one control element for controlling the scanner.

[0002] In the medical application of laser devices, laser surgery devices, for example based on CO2 lasers or solid-state and diode lasers, have become established.

[0003] For microsurgical applications, the operations are observed using operating microscopes in order to be able to perform even very small operations adequately.

[0004] When using laser light for surgical procedures, it can be focused into the observation beam path of the operating microscope via a micromanipulator. For this purpose, the micromanipulator is mounted as a separate device beneath the operating microscope. A large, wavelength-dependent mirror within the micromanipulator is thus positioned directly below the objective lens of the operating microscope. The mirror is transparent to the surgical field illumination and for observation, and highly reflective to the laser light. It is positioned at approximately 45° in front of the objective lens, thus reflecting the laser beam directly into the surgical field.

[0005] In combination with the micromanipulator, a scanner located at the micromanipulator's optical input is used to move the laser beam in the x and y directions. The scanner includes, in particular, an electronically controlled mirror unit across which the laser beam is moved. This rapid beam movement creates a beam deflection pattern, referred to here as a scan pattern, on the surgical field.

[0006] If a line is selected as the scan pattern, this line has an orientation within the surgical field. A line is used when the operation, i.e., the application of laser light, is intended to create an incision. Due to the scanner's electronic control, the incision is made very uniformly along the line's length. This advantage over a hand-guided line is used in laser surgery for precise cutting.

[0007] If the orientation of the line does not match the desired cutting line, the scanned figure must be rotated.

[0008] Existing micromanipulators with scanners already possess the capability to rotate scanned figures. In known systems, a scanned figure is rotated clockwise or counterclockwise at a fixed speed when a control element for counterclockwise rotation or a control element for clockwise rotation is activated. A combination element with both activation options is also known.

[0009] With this well-known technique, the rotation speed of the scanned figure cannot be changed; only the direction of rotation. A disadvantage is that the control element must be operated until the scanned figure reaches the desired orientation. This presents the difficulty that the rotation may be too slow, increasing the operation time. Alternatively, the rotation may be too fast, exceeding the intended orientation. This necessitates reversing the rotation. This can trigger an iterative process until the desired orientation of the scanned figure is achieved.

[0010] Rotating a scan figure can be achieved using function keys on the laser device. This requires the user to switch from the patient to the laser or to instruct a second person to rotate the figure verbally. Controlling the scan from the application unit, particularly the operating microscope, via the positioning handle (joystick) on the micromanipulator, which is used to position the scan figure, is more practical. Current implementations consist of buttons for left and right rotation, either pushbuttons or rotary switches. However, these exert mechanical forces on the joystick, which can easily cause the scan figure to be dispositioned. Furthermore, button presses are limited to increments, and continuous button presses, as described above, are tied to specific progress rates.

[0011] WO 2017 / 139 853 A1 describes a control device for a slit-lamp arrangement with a laser for generating a treatment spot pattern. The control device comprises a joystick with a lower and an upper part. A rotatable ring is arranged between the upper and lower parts, which is designed to rotate the treatment spot pattern. The rotatable ring can be turned by a few degrees and has two stages, which allow for slow and fast rotation of the treatment spot pattern.

[0012] The object of the present invention is therefore to provide an improved micromanipulator for manipulating a laser beam of a laser surgery device.

[0013] This problem is solved by a micromanipulator according to claim 1. Preferred embodiments of the present invention are the subject of the dependent claims.

[0014] The present invention comprises a micromanipulator for manipulating a laser beam of a laser surgery device, comprising a scanner for generating at least one scan image and at least one control element for controlling the scanner. According to the invention, the control element comprises a rotary element, wherein a rotation of the rotary element causes a rotation of the scan image, which depends on the size and / or speed of the rotation of the rotary element.

[0015] The scan figure therefore rotates in accordance with the rotation of the rotating element. This allows for targeted rotation of the scan figure into a desired position, avoiding at least some, and preferably all, of the aforementioned disadvantages. The rotating element is freely rotatable without any limitation on the angle of rotation; that is, the angle of rotation is unlimited, and the rotating element can be rotated any number of times. The scan figure follows this free rotation of the rotating element without restrictions; that is, any number of rotations of the scan figure are possible.

[0016] The magnitude of the rotation of the rotating element refers, for example, to the amount of the difference in the angle of rotation generated by the rotation between a starting position and a current position of the rotating element, or to the absolute angle of rotation currently assumed by the rotating element. The speed of the rotation of the rotating element refers, in particular, to the current rate of change of the angle of rotation of the rotating element during the rotation.

[0017] The scanner preferably includes an electronically controlled mirror unit across which the laser beam is moved. The rapid beam movement creates a beam deflection pattern, referred to here as the scan pattern, on the surgical field.

[0018] According to one possible embodiment of the present invention, the micromanipulator comprises a joystick pivotably arranged on a base, by means of which the position of the scan figure can be adjusted.

[0019] According to one possible design, the micromanipulator includes a mirror through which the laser beam can be coupled into the operating field.

[0020] The mirror is preferably a wavelength-dependent mirror, which, when the micromanipulator is mounted on an operating microscope, is preferably positioned below the objective lens of the operating microscope. The mirror is transparent to the surgical field illumination and for observation, and reflective to the laser light. It is preferably arranged so that it reflects the laser beam directly into the surgical field.

[0021] According to a first possible embodiment of the present invention, the orientation of the mirror can be changed by the joystick in order to adjust the position of the scan figure.

[0022] In particular, the mirror can preferably be tilted using the joystick so that the reflected laser beam is moved in the x and y directions.

[0023] The joystick can either be mechanically connected to the mirror and move it mechanically, or it can control microactuators to move the mirror.

[0024] According to a second possible embodiment of the present invention, the position of the scanned figure is adjusted by controlling the zero point of the scanner, which is provided separately from the mirror, using the joystick. In this case, the mirror can be rigidly mounted on the micromanipulator.

[0025] The scanner is preferably positioned between the optical input of the micromanipulator and the mirror. Moving the mirror therefore allows the position of the scanned figure to be changed.

[0026] If the mirror can be moved via microactuators, these can also be used to generate the scan image, so that the mirror simultaneously works as the mirror of the scanner and no separate scanner is needed.

[0027] According to one possible embodiment of the present invention, the joystick is arranged on a unit containing the optical components of the micromanipulator.

[0028] If an electronic joystick is used, it can also be implemented as a separate unit, which is only connected to the unit containing the optical components of the micromanipulator via a signal. This signal connection can be wired or wireless.

[0029] In In one possible embodiment, the joystick is located on a separate console that can be freely positioned by the user. In a first embodiment, the control signals from the joystick are transmitted to the micromanipulator's control system, in particular to the control system of the microactuators and / or the scanner, via a signal cable; in a further embodiment, wirelessly via radio signals.

[0030] According to one possible embodiment of the present invention, the rotary element is arranged on the joystick. This allows both the position and orientation of the scan figure to be controlled via the joystick. According to one possible embodiment of the present invention, the rotary element is rotatable about a principal axis of the joystick.

[0031] According to one possible embodiment of the present invention, the rotating element is arranged in the region of the tip of the joystick and is preferably formed by a rotatable tip of the joystick.

[0032] According to one possible embodiment of the present invention, the control element comprises a sensor by which an absolute rotational angular position and / or a magnitude and / or speed of a relative change in the rotational angular position of the rotating element is detected.

[0033] According to one possible embodiment of the present invention, the sensor transmits the detected quantity as an analog or digital value to a scanner controller.

[0034] According to one possible embodiment of the present invention, the rotary element can be rotated continuously or in steps into a plurality of angular positions.

[0035] According to one possible embodiment of the present invention, the rotating element is rotatable in two opposite directions, wherein the rotation of the rotating element causes a corresponding rotation of the scanned figure. The scanned figure can therefore be rotated in opposite directions depending on the direction of rotation of the rotating element.

[0036] According to one possible embodiment of the present invention, the rotation of the rotating element causes a rotation of the scan figure, the extent of which depends on the magnitude of the rotation of the rotating element. In particular, the magnitude of the angle of rotation difference generated by the rotation between an initial position and a current position of the scan figure depends on the magnitude of the angle of rotation difference generated by the rotation between an initial position and a current position of the rotating element.

[0037] According to one possible embodiment of the present invention, the rotation of the rotating element causes a rotation of the scan figure produced by the scanner that is proportional to the size of the rotation, i.e., the size of the rotation of the scan figure is a monotonically increasing function of the size of the rotation of the rotating element, in particular a strictly monotonically increasing function.

[0038] According to one possible embodiment of the present invention, it is provided that, at least in one operating mode, the size of the rotation of the scan figure has a fixed ratio to the size of the rotation of the rotating element.

[0039] According to one possible embodiment of the present invention, the fixed ratio is adjustable.

[0040] According to one possible embodiment of the present invention, it is provided that, at least in one operating mode, the size of the rotation of the scan figure has a ratio to the size of the rotation of the rotating element, which depends on the rotational speed of the rotating element.

[0041] Preferably, the size of the rotation of the scan figure increases in relation to the size of the rotation of the rotating element as the rotational speed of the rotating element increases.

[0042] According to one possible embodiment of the present invention, it is possible to switch between the two operating modes described above.

[0043] According to one possible embodiment of the present invention, the control element comprises a push or pull input element, wherein at least one parameter of the micromanipulator can be changed by actuating the push or pull input element. This parameter is an additional parameter that can be adjusted for the alignment of the scan figure.

[0044] In In a preferred embodiment, the rotary element is designed as such a push or pull input element or has such a push or pull input element.

[0045] For example, the rotary element can be movable in the axial direction, with a sensor detecting the movement, whereby at least one parameter of the micromanipulator is changed based on the sensor signals. In particular, the rotary element can be movably arranged on the joystick in the axial direction.

[0046] Alternatively, a push or pull input element can be provided at the tip of the joystick, which is surrounded by the rotary element.

[0047] In particular, the push or pull input element can be a push or pull button or push or pull switch.

[0048] According to a first possible embodiment of the present invention, it is possible to switch directly between different parameter settings of a parameter by actuating the push or pull input element. In particular, the parameter settings are changed by the number of actuations or the duration of the actuation.

[0049] According to a second possible embodiment of the present invention, an operating mode can be switched by actuating the push or pull input element, in which the rotary element has a different control function and the parameters of the micromanipulator can be changed by rotating the rotary element. Furthermore, several operating modes can be provided, in each of which the rotary element is used to change different parameters, with switching between the operating modes being done by actuating the push or pull input element.

[0050] The two variants can also be implemented in combination. For example, an initial activation with a short duration can immediately switch between parameter settings of a parameter, and a second activation with a longer duration can switch between operating modes with a modified function of the rotary element.

[0051] For each of the possible parameters described below, the control of the parameter can be implemented using one of the two variants described above.

[0052] According to one possible embodiment of the present invention, it is provided that a parameter that can be changed by actuating the push or pull input element is the type and / or size of the scan figure.

[0053] For example, by pushing or dragging the push or pull input element, you can switch between different patterns, such as a linear pattern and at least one or more other patterns like a circle, square, rectangle, triangle, or hexagon. Alternatively or additionally, by pushing or dragging the push or pull input element, you can change the size of the selected pattern, for example, switching between different sizes.

[0054] According to one possible embodiment of the present invention, a parameter that can be changed by actuating the push or pull input element is a geometric parameter of the shape of a selected scan figure, in particular the curvature of a linear scan figure. For example, it is therefore possible to switch between different curvatures by pushing or pulling the push or pull input element, or to continuously change the curvature by pushing or pulling the push or pull input element.

[0055] According to one possible embodiment of the present invention, a parameter that can be changed by actuating the push or pull input element is the laser power and / or the scan figure speed.

[0056] According to one possible embodiment of the present invention, the operating mode of the rotary element is a parameter that can be changed by actuating the push or pull input element. In particular, switching between the aforementioned modes can be effected by this actuation.

[0057] According to one possible embodiment of the present invention, a parameter that can be changed by actuating the push or pull input element is the ratio between the size of the rotation of the scan figure and the size of the rotation of the rotary element. In particular, the setting of this ratio described above can therefore be effected by actuating the push or pull input element.

[0058] For example, by pushing or pulling the push or pull input element, one can switch between different values ​​of the parameters mentioned above, or by pushing or pulling the push or pull input element, a continuous change of the value can be made.

[0059] According to one possible design, the micromanipulator includes a connector for a detachable connection to an operating microscope.

[0060] According to one possible embodiment, the detachable attachment of the micromanipulator under the operating microscope is achieved using a dovetail connection. The connector is therefore a dovetail connector.

[0061] According to a preferred embodiment, the detachable attachment of the micromanipulator to the operating microscope is achieved via a bayonet fitting. The connector is therefore a bayonet connector. Specifically, it is a bayonet locking ring that can be inserted into a bayonet fitting on the operating microscope and secured there by turning. Unlike the previously common connection using a dovetail connector, this allows the micromanipulator to be quickly positioned in a reproducible final position.

[0062] The bayonet fitting preferably has a detent that secures it in the end position. This detent can be achieved by springs and / or ball detents, optionally assisted by gravity. The detent, springs, and / or ball detents are preferably located on the bayonet fitting's connector, which is mounted on the operating microscope.

[0063] Alternatively or additionally, the bayonet fitting preferably has a locking mechanism in which the connection can be fixed in the final position. In particular, a clamping screw may be provided for this purpose. The locking mechanism is preferably provided on the connector of the bayonet fitting located on the micromanipulator.

[0064] The two connectors of the bayonet fitting are preferably slid into or out of each other in a direction parallel to the axis of the microscope's observation beam path and connected or disconnected by rotating them. The bayonet fitting is preferably lockable or unlocked by a rotational movement around an axis of rotation parallel to the axis of the microscope's observation beam path. The direction of attachment (perpendicular from below) is thus decoupled from the locking direction (rotation).

[0065] The present invention further comprises a laser surgery device with a micromanipulator as described above.

[0066] According to one possible embodiment of the present invention, the laser surgery device comprises a laser for generating the laser beam and / or an operating microscope to which the micromanipulator can be detachably attached.

[0067] All of the above-mentioned functions controlled by the control element(s) are provided by one or more controllers of the laser surgery device and / or the scanner, which are designed to control, in particular, the scan image.

[0068] The control system(s) comprise, in particular, a microprocessor and non-volatile memory on which software is stored. When executed on the microprocessor, this software performs or implements the corresponding functions. An input of the control system is connected to the operating element(s), and an output of the control system is connected to the laser and / or an actuator of the scanner, in particular an actuator of a mirror unit of the scanner, the movement of which generates the scanned image.

[0069] The present invention will now be described in more detail with reference to figures and drawings.

[0070] This shows: Fig. 1 shows an embodiment of a micromanipulator according to the invention in a perspective view, Fig. 2 shows the in Fig. 1 The exemplary embodiment shown in Fig. 3 illustrates the creation of a scanned figure. Fig. 1 and 2The illustrated embodiment shows the rotation of a scan figure, which is controlled by the rotation of the rotary element, Fig. 4. Fig. 1 bis 3 The illustrated embodiment, wherein a geometric parameter of the scan figure is changed by actuating a push or pull input element, and Fig. 5 an embodiment of a laser surgical device according to the invention with a micromanipulator according to the invention in a schematic representation.

[0071] Fig. 1 bis 4 show an embodiment of a micromanipulator according to the invention, Fig. 5 its use in a laser surgical device, especially for microsurgical applications.

[0072] For microsurgical applications, as in Fig. 5 The operation is observed using an operating microscope 80, enabling even very small operations to be performed adequately. When laser light is used for the surgical procedure, it is reflected into the observation beam path of the operating microscope 80 via the micromanipulator 1.

[0073] In the exemplary embodiment, the micromanipulator 1 is designed as a standalone device which is mounted under the operating microscope 80. For this purpose, it has a connector 40.

[0074] In the exemplary embodiment, the connector 40 on the micromanipulator 1 is designed as a bayonet locking ring, which can be connected to a corresponding counterpart on the operating microscope by sliding them together in a direction parallel to the axis of the microscope's observation beam path and then rotating them. The bayonet lock engages in the final position. A clamping screw 41 is also provided, which can be used to fix the bayonet lock in the final position. However, a dovetail joint would also be conceivable.

[0075] A laser beam L is fed into the micromanipulator 1 via its optical input 11. This beam is generated by a laser 90, which can be, for example, a CO2 laser, a solid-state laser, or a diode laser. The laser beam is guided from the laser 90 to the optical input 11 of the micromanipulator 1 via a tube 95. To make the laser beam used for the operation visible, a collinear pilot laser is also provided.

[0076] In the exemplary embodiment, the micromanipulator 1 comprises a focusing optic via which the laser beam L can be focused.

[0077] The micromanipulator 1 also includes an electronically controlled mirror unit 10. This moves the laser beam along a path. Due to the rapid beam movement L scan, a beam deflection structure, here referred to as scan figure 60, is created on the operating field 70.

[0078] In the exemplary embodiment, the micromanipulator 1 further comprises a wavelength-dependent mirror 30, which, in the mounted position of the micromanipulator, is located directly below the objective lens of the surgical microscope 80. The mirror 30 is transparent to the surgical field illumination and for observation, and highly reflective to the laser light. It is positioned at approximately 45° in front of the objective lens and thus reflects the focused laser beam L scan directly into the surgical field 70.

[0079] The micromanipulator 1 includes a joystick 50, which allows the position of the laser beam in the operating field and, in particular, the position of the scan figure to be adjusted.

[0080] In the exemplary embodiment, the joystick 50 is a mechanical element which can slightly tilt the mirror 30 in 2 axes in order to change the position of the laser beam in the operating area.

[0081] Alternatively, the joystick could be an electronic joystick, such as those used in computer games, which generates electrical control signals to adjust the position of the laser beam within the operating area. This can be arranged, as shown in the figures, on the assembly containing the optical components, as is known from mechanical joysticks, or on a separate, freely positionable console. An electronic joystick also offers several control options: In a first variant, the electrical control signals could be transmitted to the control unit of the scanner 10, which is preferably located separately from the mirror, and the scanner's zero position could be controlled in such a way that the center of the scanned image is moved. This would eliminate the need for the previously used separate mechanism for moving the mirror 30, allowing it to be fixed in place.

[0082] Alternatively, micro-actuators could be provided, which are controlled by the electronic joystick and tilt and incline the mirror 30.

[0083] In this case, the scanner 10 can be integrated into the mirror, with the microactuators handling both the scanning function of the laser light and the positioning of the scanned figure. Appropriately fast microactuators are required for this.

[0084] In the exemplary embodiment, however, the scanner 50 is provided in addition to the movable mirror 50 and is arranged at the optical input of the micromanipulator 1.

[0085] By tilting the mirror 30 using the joystick 50, the center point of the scan figure 60 in the operating field 70 can be moved.

[0086] In particular, the scan figure 60 can be a line in at least one operating mode. This line has an orientation within the operating field 70. A line is used when the operation, i.e., the application of the laser light, is intended to create a cut. Due to the electronic control of the scanner 10, the cut is made very uniformly along the length of the line. This advantage over a hand-guided line is used in laser surgery for precise cutting.

[0087] If the orientation of the line does not match the desired cutting line, the scan figure must be rotated 60 degrees. Alignment of the scan figure may also be necessary for other scan figures.

[0088] This is where the invention comes in, by acting as in Fig. 3 shown by a rotary element 51, which in the embodiment is arranged on the joystick 50 of the micromanipulator, enables a rotation D s of the scan figure proportional to the rotation angle D d of the rotary element 51.

[0089] In the exemplary embodiment, the rotary element 51 is freely rotatable and attached to the end of the joystick 50.

[0090] The rotary element 51 is located on the joystick axis and is axially fixed. It can rotate without force and operates a rotary encoder, which converts the relative rotation D d of the rotary element 51 about the joystick axis into direction-dependent, preferably digital, pulses.

[0091] The rotary element 51 electronically transmits its rotational position to the control of the scanner 10. The control rotates the scan figure 60 according to the rotation of the rotary element 51.

[0092] In particular, in the exemplary embodiment, the impulses of the rotary encoder are transmitted via an integrated cable, which runs motionless through the rotation of the rotary element 51 within the joystick 50 and the micromanipulator for signal transmission to the scanner 10 and / or to the laser 90.

[0093] The direct rotation angle connection between the rotating element 51 and the scan figure rotation angle enables targeted rotation of the scan figure 60. The rotations of the rotating element are unlimited and possible in both directions.

[0094] The rotation Ds of the scan figure 60 is therefore determined in terms of rotational speed and direction by the rotation Dd of the rotary element by the user. A rotational position Ds can also be approached via the rotary element by rotating the rotary element by a freely definable angle Dd and simultaneously rotating the scan figure by this angle or a proportional angle Ds. A reduction or gear ratio can be provided between the rotary encoder angle and the figure's rotational angle. The magnitude of this reduction or gear ratio can also be dynamically dependent on the rotational speed.

[0095] The invention therefore enables force-free rotation control of the scanned figures without limiting the overall rotation angle. Intuitive rotation is achieved by following the figure as the rotating element is turned.

[0096] In the exemplary embodiment, as in Fig. 3 The illustration further shows the possibility of pushing the rotary element 51 in the direction of the joystick axis so that it functions as a pressure input element 52. Alternatively, a separate pressure input element 52 could be provided at the tip of the joystick, surrounded by the rotary element 51.

[0097] Pressing button P activates an integrated push button, which also transmits its signal to the laser device. This allows parameters on the laser device and / or scanner to be switched between, or parameter setting cycles to be performed stepwise or continuously.

[0098] In particular, in an operating mode or configuration such as in Fig. 3 As shown, the line, when selected as the scan shape, can be modified by pressing the print input element 52. For example, the line can be made less and / or more curved, e.g., to adapt this cutting shape to the fabric to be cut.

[0099] In In a further operating mode or configuration, it is provided that the ratio of rotary element rotation angle Dd to figure rotation angle Ds can be changed by pressing the pressure input element 52. This makes the rotary encoder more sensitive or increases the rotation speed of the scan figure. For example, the ratio can be set so that a 100° rotation angle of the rotary element results in, for example, only a 50° rotation angle of the scan figure, or alternatively, a 200° rotation angle.

[0100] In In another operating mode or configuration, it is provided that the shape of the scanned figure can be changed by pressing the print input element 52. Possible shapes are circle, line, square, rectangle, triangle or hexagon.

[0101] InIn a further operating mode or configuration, it is provided that the intensity of the laser light can be changed by pressing the pressure input element 52. This can be achieved by changing the laser power or by adjusting the speed of the scanning process.

[0102] In another operating mode or embodiment, the brightness of a pilot laser can be adjusted by pressing the pressure input element 52. For example, the brightness can be adjusted in steps by pressing it several times.

[0103] According to one possible embodiment, the function of the rotary element can be changed by pressing the pressure input element 52. In particular, it is provided that pressing the pressure input element 52 can switch to an operating mode in which the brightness of the pilot laser can be adjusted by rotating the rotary element. Preferably, the pilot laser flashes in this operating mode to indicate that it is adjustable. The function of the rotary element can be switched, in particular, by pressing and holding the pressure input element 52.

[0104] Furthermore, it is conceivable that corresponding operating modes are also provided for the above-described additional functions, which are controlled by pressing the pressure input element 52, which can be accessed by pressing the pressure input element 52 and in which the rotary element serves to control the additional functions.

[0105] Furthermore, it is possible to provide a pull input element, and in particular a pull button, alongside or instead of the push input element 52 and especially the push button in the rotary element. The aforementioned functions can also be controlled via this pull button.

Claims

1. Micromanipulator (1) for manipulating a laser beam (Lin, Lscan) of a laser surgery device, with a scanner (10) for generating at least one scan figure (60) and at least one control element for controlling the scanner (10), wherein the control element comprises a rotary element (51), wherein a rotation (Dd) of the rotary element (51) causes a rotation (Ds) of the scan figure (60) which depends on the magnitude and / or speed of the rotation (Dd) of the rotary element (51), characterized in that the rotary element (51) is freely rotatable without limitation of the rotation angle and the scan figure (60) follows this free rotation without restrictions.

2. Micromanipulator (1) according to claim 1, with a joystick (50) arranged pivotably on a base, via which the position of the scan figure (60) can be set, wherein the rotary element (51) is arranged on the joystick (50).

3. Micromanipulator (1) according to claim 2, wherein the rotary element (51) is rotatable about a main axis of the joystick (50) and / or wherein the rotary element (51) is arranged in the region of the tip of the joystick (50), which is preferably formed by a rotatable tip of the joystick (50).

4. Micromanipulator (1) according to one of the preceding claims, wherein the control element comprises a sensor by means of which an absolute angular position and / or a magnitude and / or speed of a relative change in the angular position of the rotary element (51) is detected, wherein the sensor preferably transmits the detected magnitude as an analog or digital value to a control system of the scanner (10).

5. Micromanipulator (1) according to one of the preceding claims, wherein the rotary element (51) is rotatable continuously or in steps into a plurality of angular positions.

6. Micromanipulator (1) according to one of the preceding claims, wherein the rotary element (51) is rotatable in two opposite directions of rotation, wherein the rotation (Dd) at the rotary element (51) causes a rotation (Ds) of the scan figure (60) in the same sense.

7. Micromanipulator (1) according to one of the preceding claims, wherein the rotation (Dd) of the rotary element (51) causes a rotation (Ds) of the scan figure (60) which depends on the magnitude of the rotation (Dd) of the rotary element (51), wherein the rotation (Dd) preferably causes a rotation (Ds), proportional to the magnitude of the rotation, of the scan figure (60) generated by the scanner (10).

8. Micromanipulator (1) according to one of the preceding claims, wherein, at least in one operating mode, the magnitude of the rotation (Ds) of the scan figure (60) has a fixed ratio to the magnitude of the rotation (Dd) of the rotary element (51).

9. Micromanipulator (1) according to claim 8, wherein the fixed ratio is adjustable.

10. Micromanipulator (1) according to one of the preceding claims, wherein, at least in one operating mode, the magnitude of the rotation (Ds) of the scan figure (60) has a ratio to the magnitude of the rotation (Dd) of the rotary element (51) which depends on the rotational speed of the rotation (Dd) of the rotary element (51), wherein preferably the magnitude of the rotation (Ds) of the scan figure (60), relative to the magnitude of the rotation (Dd) of the rotary element (51), increases as the rotational speed of the rotation (Dd) of the rotary element (51) increases.

11. Micromanipulator (1) according to one of the preceding claims, wherein the control element comprises a push or pull input element (52), in particular as a push or pull button or push or pull switch, wherein the rotary element (51) is preferably configured as such a push or pull input element (52) or has such a push or pull input element (52), wherein by actuating the push or pull input element (52) at least one parameter of the micromanipulator (1) can be changed.

12. Micromanipulator (1) according to claim 11, wherein a parameter changeable by actuating the push or pull input element is the type and / or size of the scan figure (60) and / or a geometry parameter of the shape of a selected scan figure (60), in particular the curvature of a line-shaped scan figure (60).

13. Micromanipulator (1) according to claim 11 or 12, wherein a parameter changeable by actuating the push or pull input element is the laser power and / or the scan figure speed.

14. Micromanipulator (1) according to one of claims 11 to 13, wherein a parameter changeable by actuating the push or pull input element is the operating mode of the rotary element (51) and / or the ratio between the magnitude of the rotation (Ds) of the scan figure (60) and the magnitude of the rotation (Dd) of the rotary element (51).

15. Laser surgery device with a micromanipulator (1) according to one of the preceding claims, wherein the laser surgery device preferably comprises a laser for generating the laser beam (Lin, Lscan) and / or a surgical microscope (80) on which the micromanipulator (1) can be detachably fastened.

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