WO2006089886A1

WO2006089886A1 - Apparatus and method for setting a relative displacement position of two components of a medical device

Info

Publication number: WO2006089886A1
Application number: PCT/EP2006/060139
Authority: WO
Inventors: Harald Graf; Peter Rauh; Thomas Will
Original assignee: Siemens Aktiengesellschaft
Priority date: 2005-02-23
Filing date: 2006-02-21
Publication date: 2006-08-31
Also published as: CN101123914B; CN101123914A; EP1850753A1; DE102005007938A1

Abstract

In order to make it possible to precisely set a relative displacement position of two components (2; 4) of a medical device, in particular of an X-ray device (1), to at least one predefined nominal displacement position with little expenditure and without mechanical compensating means which engage between the components (2; 4), the invention provides that the actual relative displacement position of the two components (2; 4) is detected, without contact at either component, with the aid of a detecting means (29-33 and 49 and 55), and the actual displacement position relative to the at least one predefined nominal displacement position is displayed with the aid of a display means (8); it is additionally provided that the two components (2; 4) are displaced relative to one another until an overlap of the actual displacement position and the at least one nominal displacement position is displayed.

Description

description

Device or method for setting a relative displacement position of two components of a medical device

The invention relates to a device or a method for adjusting a displacement position between a first component of a medical device on the one hand and a second component of the medical device which can be displaced relative to the first component on the other hand.

Many medical institutions have mutually displaceable components, which in their mutually relative displacement position in adaptation to their intended

Use are adjustable; Thus, in the case of an X-ray device, its X-ray emitter or its X-ray detector is displaceable relative to a support provided for its support, so that e.g. a focus-film distance or a position of the X-ray source or the X-ray detector with respect to a patient to be examined is adjustable.

It is in the displacement of two components relative to one another is often necessary to set certain target relative displacement positions accurately, for example, in the case of X-ray device animals a certain focus-film distance exactly jus ^¬. It is well known that the displacement positions of two components of a medical device with mechanical means, eg with catch traps on the one component, reach into the bolts or balls on the other component when reaching the respective desired displacement positions form fit, or with a device brake, the Relative displacement of the two components automatically stops when reaching the respective desired displacement position to adjust the setpoint shift positions. These mechanical balancers have the disadvantages of being both wear-resistant and Afflict as well as disturbing noises when moving and cause latches or brakes.

The present invention is based on the object, while dispensing with mechanical intermeshing between the components matching an exact setting of a relative displacement position of two components of a medical device to predefined desired displacement positions in a low-effort manner.

The solution of this problem is achieved by a device according to claim 1 or by a method according to claim 22; advantageous embodiments are each Gegens ^¬ tant of the associated dependent claims.

Due to the inventive mutually contactless Erfas ^¬ sen and displaying the detected actual displacement position of the second component relative to the first component with respect to at least one predefined desired displacement position, it is possible the actual displacement position in a simple manner with the at least one desired displacement position by moving even without mechanical, noisy and wear-prone Ab ^¬ equalize.

For particularly simple and accurate detection of a match of the actual displacement position with a respective desired displacement position is according to an embodiment of the invention as detection means on one of the two components ^{¬ at} least a first sensor for detecting at least a first mark on the other of the two components provided, this at least a first mark from the view of the at least one first sensor is disposed in a at least ei ^¬ ne target shift position characterizing position. If the at least one first label by the relative displacement of the two parts the area of the Erfassungsbe ^¬ reaches at least a first sensor, then by entering at the moment of this detection attaining the at least one first mark a match of the actual displacement position and the determined at least one desired displacement position.

In order to detect beyond the detection of the coincidence of the actual displacement position with a respective desired displacement position also already the approximation of the actual displacement position to a respective desired displacement positions are on the other component further, by the at least one first sensor and / or ^{Markierun ¬} conditions provided by further provided on the one component as detection means, ^{Markersun ¬} gene provided, these further markings from the perspective of at least one sensor provided for each detection in each different approximation steps of the actual displacement position to the at least one desired Verschiebestel ^¬ ment characteristic positions are arranged.

By the aforementioned detection of at least one Markie ^¬ tion, which stand with their respective position in relation to the at least one predefined setpoint shift position, using the at least one sensor is achieved that already ^¬ already in the detection of the actual displacement position Reference is made to the at least one desired displacement position and that consequently an indication of the actual displacement position with respect to the at least one desired displacement position is possible with little effort. In order at least to detect the position of a marker as exact as possible, the Erfassungsbe ^¬ is rich to select the at least one sensor in the direction of the relative displacement of the two components in an expedient manner possible liehst small. The detection is easily achieved by a relative arrangement of the at least one sensor and the at least one marking, so that the at least one sensor can be brought into a directly opposite position to a respective marking by relative displacement of the two components. To be able to particularly easily detect the marks separated from each other, for example, to distinguish between marks the different displacement distances actual displacement ^¬ position draw the ISIN to the at least one desired position of displacement, it is provided according to a further embodiment of the invention is that on the one hand the tags are arranged in strips which lie in the direction of the relative displacement of the two members next to each other, and that the sensors walls ^¬ one of these strips are provided in each hand, for detecting the markings in at least; For this purpose, it is expedient to arrange the sensors above or below those at least one strip whose markings they should detect.

The at least one marking, by which at least one correspondingly provided sensor is optically detected, is simply and reliably detected.

The at least one marking in the form of at least one reflector according to the light barrier principle can be detected particularly accurately; For this purpose, as the at least one sensor on the one component, at least one light sensor for detecting a light ^¬ signal is provided which can be emitted from a light emitter on the one component and from the at least one reflector on the other component in the direction of the at least one sensor ,

As an alternative to the optical detection, it is provided a simple and reliable manner, the at least one, in this invention the initial magnetic marker design, at least provided for this purpose, to be detected by the magnetic sensor according to a ^¬ table.

For particularly accurate detection of the actual displacement position is provided as a detection means on the one component, a distance ^¬ measuring device for measuring a, related to a reference mark on the other component distance, which is at at least one of the at least one desired shift position corresponding desired distance is comparable.

In order to be able to adjust the actual displacement position with a respectively provided desired displacement position in a particularly exact manner, the display means is provided for displaying a respective coincidence of the actual displacement position with the at least one desired displacement position.

To particularly rapidly an approximation of the actual displacement Stel ^¬ development and to reach the respectively provided desired displacement position, the display means for displaying a respective displacement distance and / or a respective Veschieberich- is processing of the actual displacement position in relation to the at least one predetermined slide position is provided. This makes it possible to move the two components targeted in terms of a match their relative actual displacement position with an intended target displacement position.

For a good recognizability of the displayed actual displacement ^¬ position is as a display means at least one optical Anzeige ^¬ geelement, in particular in the form of at least one LED, before ^¬ seen. Alternatively, other display means such as an LC display with optical display elements in the form of segments of the LC display are conceivable.

In order to specify the actual displacement position particularly accurately, the respectively present agreement of the actual displacement ^¬ position with the at least one desired displacement position or their respective displacement distance and / or their respective displacement direction by a correspondingly different display intensity of the individual optical display elements and / or can be displayed by a correspondingly different selection of the activated optical display elements.

For a particularly clear display is the optical display ^¬ elements in each different displacement distance and / or displacement direction provided in a specific geometric arrangement.

According to an advantageous embodiment is provided as a display means an acoustic signal generator, in particular for outputting a dependent in its pitch of the respective displacement distance acoustic signal.

The invention and further advantageous embodiments of the invention according to features of the subclaims are explained in more detail below with reference to schematically illustrated embodiments in the drawing, without thereby limiting the invention to this Ausführungsbei ^¬ games takes place; show it:

1 shows a front view of an X-ray device with a stand for a relative height-adjustable mounting of an X-ray source and with a Pa ^¬ tiententisch, the holder has a display according to the invention;

2 shows a side view of the X-ray device according to FIG. 1;

3 in detail enlargement of the holder of the

X-radiator facing the front surface of the stand according to FIG 2, said front surface having arranged in strips markings in the form of reflectors;

4 shows in enlarged detail the rear side surface of the holder of the X-ray source facing the stand according to FIG. 2, this rear side surface having light transmitters and light sensors via one of the strips in each case; 5 shows display means according to the invention FIG 1, wherein said Anzeigemit ^¬ tel is in accordance enlarged detail from an array of LEDs;

6 shows an enlarged detail of the X-ray device according to FIG 2, wherein the holder of the X-ray ^¬ radiator has a laser beam transmitter and a laser beam receiver for measuring a distance to a laser beam reflector on the tripod;

7 shows an enlarged detail of the X-ray device according to FIG 2, wherein the holder of the X-ray ^¬ radiator has a Seilzugpotentiometer for measuring a distance by means of a drawn to an attachment point on the tripod rope.

Figure 1 and Figure 2 show in front view and side view of an X-ray device 1 with a support in the form of a tripod 2 for a höhenverschiebbare relative to 3 in the holder 4 of a highly simplified X-ray source 5 and with an X-ray detector 6 ent ^¬ holding Patient table 7; the holder 4 has a - in Figure 5 enlarged shown - display means 8 as outer ^¬ Lich visible part of a device for adjusting a position of displacement of the holder 4 relative to the tripod on the second The externally invisible parts of the device for adjusting the displacement position of the holder relative to the stand are shown in Figures 3 and 4, which are described below.

By moving the holder 4 for the X-ray source 5 is advantageously the focus-film distance 39 between ^¬ rule a focus of the X-ray source 5 on the one hand and an imaging surface of the X-ray detector 6 on the other hand exactly adjustable. If, instead of the X-ray source 5, a C-arm holder for an X-ray emitter and an X-ray detector are mounted on the holder 4, which is displaceable relative to the stand 2, ordered, then by moving the holder 4, the position of the X-ray source and the X-ray detector relative to a patient positioned for examination in the C-arm exactly adjustable.

To improve the clarity of Erfindungswesent ^¬ union is not shown a guide means which guides the holder during the displacement on the stand 2. Appropriately, such as a guide means such as a rail system is provided. To keep the holder 4 with the X-ray source 5 after moving stable in its displacement position, a per se known counterweight is expediently provided in the stand 2. In addition, it is possible to lock the displacement position by means of additional means, such as a brake.

Specifically, the tripod illustrated in Figures 1 and 2 is a floor stand; Of course, the invention is also applicable to other types of tripods, e.g. for a ceiling stand, usable.

Figure 3 and Figure 4 show on the one hand in Ausschnittsvergröß ^¬ tion of the holder 4 of the X-ray source 5 facing front surface of the stand 2 according to Figures 1 and 2 or on the other hand in detail enlargement of the tripod 2 facing back surface of the holder 4 of the X-ray source 5, wherein on the one hand markings in the form of reflectors 9-18 on the front surface of the stand 2 in each case by indicated in Gestri ^¬ smile line contour strips 19-23 and on the other hand each a light emitter 24-28 and each a light ^¬ sensor 29-33 on the back the holder 4 are arranged in each case one of the strips 19-23 on the opposite front surface of the stand 2. In this arrangement, the light sensors 29-33 on the reflectors 9-18 in the strips 19-23 by moving the holder 4 relative to the stand 2 in the direction 3 away across. The reflectors 9-18 in one of the juxtaposed strips 19-23 on the front surface on the one hand and the light ^¬ transmitters 24-28 and the light sensor 29-33 on this strip 19-23 on the opposite rear surface on the other hand act, as in the following Each of the light emitters 24-28 emits a light signal at such an angle in the direction of the respectively opposite strips 19-23, that the respective light signal when hitting one of the reflectors 9-18 in Direction of the light sensor 29-33 is reflected on the respective strips 19-23 and thus of the ^¬ sem light sensor 29-33 can be detected. In this exemplary embodiment, the respective projection region 34-38 of the respective light signal on the front surface of the stand 2 corresponds to the respective detection region of the light sensor 29-33. Achieved a projection 34-38 one of the light signals by moving the holder 4 one of the reflectors 9-18, then the respective light signal is reflected to one of the Lichtempfän ^¬ ger 29-33 and detected by this.

In this embodiment, five Darge in Figure 3 are presented ^¬ strip 19-23 is provided, wherein the markings of a strip 18 9- 19-23 respectively different displacement Stel ^¬ lungs with respect to the target shift positions labeling NEN. The positions of the markers 9, 10 in the central strip 21 relative to the opposite light sensor 31 corresponds in each case to a desired displacement position of the holder 4 relative to the stand 2. The positions of the markers 9-18 in the remaining strips 19, 20, 22, 23 mark different approach steps of the actual displacement ^¬ position to the desired displacement position, wherein the markers 13, 14, 17, 18 in the two outer strips 19, 23 a larger remaining displacement distance between the actual displacement position and of the respective desired displacement position as the markings 11, 12, 15, 16 in the two further inner strips 20, 22 and wherein the markings 11-14 and 15-18 in the the left strips 19, 20 and in the two right strips 22, 23 represent a downward or upward facing displacement direction of the holder 4 from the actual displacement position to the desired displacement position.

FIG. 5 shows, in an enlarged detail, the display means 8 from FIG. 3, this display means 8 consisting of an arrangement of LEDs 40-48 arranged in rows.

For a particularly clear display of the actual displacement position in relation to the desired position of displacement on the one hand, the middle LEDs 43-45 to display the consistency and on the other hand more LEDs 40-42 and 46-48 to display each ^¬ weiligen displacement direction, in particular also of the respective Displacement distance, above or below the middle LEDs provided. The LEDs 40-42 and 46-48 indicate that the holder 4 must be moved to a further approach to the nearest desired displacement position with a shift direction to the top or down. The more lines with activated, ie luminous, LEDs 40-42 or 46-48 above or below the middle LEDs 43-45 are present, the lower is the displacement distance to the nearest desired displacement division.

It is provided for particularly fast adjustment of the actual displacement ^¬ position with a respective desired displacement position to move the holder 4 relative to the stand 2 in accordance with the respectively indicated displacement direction and / or the respectively indicated displacement distance.

Particularly little effort, the LEDs corresponds to one line ^¬ di rectly of each one of the light sensors controlled 29-33, where ^¬ at the LEDs 40-48 respectively of a row in a succession from bottom to top in each case one of the sensors 29-33 in a waste sequence are assigned from left to right.

An interaction of the components of the device for setting a displacement position shown in FIGS. ment is explained on the basis of a continuous approximation of an actual displacement position to a desired displacement position by moving the holder 4. Starting from an actual displacement position in which the optical transmitter shown in Figure 4 24-28 depict its light signals to the upper shown in Figure 3 projecting portions 34-38, this example three further steps in the approach he ^¬ be out resorted to which the respective Projection regions of the light signals are each characterized by circles with dash-dotted line contour in Figure 3.

The upper projection areas 34-38 correspond to a first approximation step in which none of the light signals hits a reflector 9-18 and thus they are not detected by the light sensors 29-33. Accordingly, all ^¬ shown in Figure 5 LEDs 40-45 off, thereby indicating, no target displacement position that in close proximity to the actual shift position.

In a second approximation step, the holder 4 shown in FIGS. 1 and 2 and with it the projection ^{surface of} the light signals are moved further downwards, as represented by the circles drawn with dash-dotted line contour directly under the original projection regions 34-38; the projection area in the left-hand strip 19 now falls on the left-hand reflector 14, so that the light signal is reflected by the left-hand light transmitter 24 and detected by the corresponding light sensor 29. Only the lower LED 40 is in accordance with the ^¬ activated, thereby indicating that the holder 4 are displaced with a to ge below ^¬ directed displacement direction, in order to reach the nearest target displacement position.

In a third approach step, the projection areas in the two left strips 19 and 20 lie on the reflectors 14 and 12, respectively, so that the two left light sensors 29 and 30 detect reflected light signals. Accordingly In addition to the lower LED 40, the two LEDs 49 and 47 arranged above this LED 40 are also activated, which indicates that the holder 4 must continue to be moved downwards and that the displacement distance between the actual displacement position and the setpoint position between Displacement position relative to the actual displacement position has decreased in the first approximation step.

In a fourth step, a match of the actual displacement position is achieved with the lower target displacement position; in this coincidence, only the light signal emitted by the central light transmitter 26 strikes the reflector 10 with its projection region located in the center strip 21, is reflected by it to the central light sensor 31 and detected by it. Accordingly, only the LEDs 43-45 in the middle row are activated, thereby indicating the coincidence of the actual shift position with one of the target shift positions. If these set shift positions are the desired set shift positions, the shift is ended.

In an analogous manner, an approach from below to the lower target displacement position is indicated by the lower LEDs 46-48.

It may also be that for each desired displacement position a strip with exactly one marking is provided for the coincidence of the actual displacement position with the respective desired displacement positions. This makes it possible, upon detection of such a mark, to numerically set the corresponding desired displacement position, e.g. with a numeric LC display.

Figure 6 shows in enlarged detail the upper half of the X-ray device 1 according to FIG 2, wherein on the holder 4 of the X-ray source 5, a distance measuring device in the form of a La ^¬ serstrahlempfängers 49 for particularly precise measurement of a Distance 54 is provided to the reference mark in the form of a laser beam reflector 51 on the stand 2, wherein the Mes ^¬ sung by means of one of a laser beam emitter 50 on the holder 4 emanating and reflected by the laser beam reflector 51 in the direction of the laser beam receiver 49, laser beam takes place, the consists of a emitted first part 52 and a reflected second part 53. The laser beam transmitter 50 and the laser beam receiver 49 are displaceable with the holder 4 and largely externally not visible here in the stand 2; the Laserstrahlre ^¬ Flektor 51 is completely arranged within the stand 2 above the laser beam sender 50 and the laser beam receiver 49 at ^¬.

Alternatively to the measurement by means of a laser beam 52, 53, it is possible to measure the distance between the distance measuring device and the reference mark in a likewise exact manner on the basis of an ultrasonic signal. For this purpose, instead of the laser beam ^¬ transmitter 50, an ultrasonic transmitter, in place of the laser beam reflector 51, an ultrasonic reflector, and in place of the laser beam receiver 49, an ultrasonic receiver provided.

FIG. 7 shows an enlarged detail of the upper half of the X-ray device 1 according to FIG. 2, wherein on the holder 4 of the X-ray source 5 a distance measuring device in the form of a

Seilzunpotentiometers 55 for accurate and very simple measurement of a distance 54 to a arranged on the stand 2 fiducial mark is provided in the form of a fastener 56 for under tension of the Seilzugpotentiometer 55 pulled-pulled rope 57 whose Ausziehlänge to the Be ^¬ festigungsmittel 56 of measuring distance 54 corresponds. The cable potentiometer 55 is displaceable with the holder 4 and largely not visible externally in the stand 2; The cable 57 leads from the cable pull potentiometer 55 upwards to the fastening means 56 arranged in the stand 2, to which the cable 57 is fastened with its cable end. In the embodiments of the invention illustrated in FIGS. 6 and 7, the reference of the actual displacement position to the desired displacement position is compared by a comparison of the respectively measured distance 54 with the desired distances corresponding to the desired displacement positions. It is expedient to control the display means 8 as a function of the smallest difference between the respectively measured distance 54 and one of the nominal distances. The display of the actual shift position with respect to the target displacement position is made based on this difference analogous to the above with reference to FIG 5 described embodiment, the Annähe ^¬ connection steps on the target shift positions and the conformity of the actual displacement position with the Desired shift orders can each be predefined on the basis of defined value ranges of the aforementioned difference. If the difference lies in one of these value ranges, the achievement of the corresponding approximation step or the match with the display means 8 is indicated.

It goes without saying that the arrangement of the distance ^¬ measuring device on the holder 4 and the reference mark on the stand 2 can be easily reversed. In addition, it is possible to arrange the display means 8 on the stand 2.

The invention can in principle zusammenfas ^¬ as follows sen: To a precise setting of a relative displacement position of two components of a medical device, particularly an X-ray device, to at least a predefined target displacement position in resource-poor manner without mechanical, grei ^¬ between the components Fende balancing means to allow, it is inventively provided to detect the relative actual displacement position of the two components mutually non-contact with a detection means and display the actual displacement position with respect to the at least one predefined desired displacement position with egg ^¬ nem display means; It is also envisaged that two components to move relative to each other until a Ü- match the actual displacement position is displayed with the at least one desired displacement position.

Claims

claims

1. Device for setting a displacement position between a first component (2) of a medical device, in particular an X-ray device (1), on the one hand, and a second component (4) of the medical device, which is displaceable relative to the first component (2),

- With a detection means (29-33 or 49 or 55) for the mutual contact-free detection of a Ist-Verschiebestel ^¬ ment of the second component (4) relative to the first component (2),

- With a display means (8) for displaying the actual displacement ^¬ position with respect to at least one predefined set-shift position of the second component (4) relative to the first component (2).

2. Apparatus according to claim 1, wherein as detection means on the one component (4 or 2) at least one first sensor (31) for detecting at least one first, on the other component (2 or 4) arranged marking (9; 10) is provided, whose position for the at least one first sensor (31) identifies the at least one desired displacement position.

3. Apparatus according to claim 2, wherein on the other component (2 or 4) further, by the at least one first sensor (31) and / or by further on the one component (4 or 2) provided as detection means sensors (29; 30, 32, 33) detectable, the at least one first mark (9; 10) upstream or downstream markings (11-18) are provided, whose positions for the at least one provided for each detection sensor (29-33) each different Mark approach steps of the actual displacement position to the at least one desired displacement position.

4. Apparatus according to claim 2 or 3, wherein on the one hand, the at least one first mark (9; 10) and / or the further markings (11-18) in strips (19-23), in the direction of the relative displaceability of the two components ( 2; 4) are next to each other, arranged and on the other hand, in particular via at least ten one of the strips (19-23) is arrange ^¬, sensors (29-33) each for detecting the marks (9-18) in at least one of these Strip (19-23) are provided.

5. The device according to at least one of claims 2-4, wherein the at least one sensor (29-33) for the optical detection of the at least one mark (9-18) is provided.

6. Device according to at least one of claims 2-5, wherein as the at least one sensor on the one component (4 or 2) at least one light sensor (29-33) for detecting a, from a light emitter (24-28) on the one Component (4 or 2) can be emitted and from the at least one mark in the form of at least one reflector (9-18) on the other component (2 or 4) reflectable, light signal is provided.

7. The device according to at least one of claims 2-5, wherein the at least one sensor for the magnetic detection of at least one mark is provided.

8. The device as claimed in claim 1, wherein a distance measuring device (49, 55) for measuring a distance, referred to a reference mark (51, 56) on the other component (2, 4), as detection means on the one component (4 or 2) (54) is provided, which is comparable to at least one of the at least one desired Ver ^¬ shift position corresponding desired distance.

9. Apparatus according to claim 8, wherein as distance measuring device on the one component (4 or 2) an ultrasonic receiver for

Measurement of the distance (54) to the reference mark in the form of an ultrasonic reflector on the other component (2 or 4) is provided by a, of an ultrasonic transmitter on the one component (4 or 2) and can be emitted by the ultrasonic reflector in the direction of the ultrasonic receiver reflected, ultrasonic signal.

10. Apparatus according to claim 8, wherein as a distance measuring device on the one component (4 or 2) a laser beam receiver (49) for measuring the distance (54) to the reference mark in the form of a laser beam reflector (51) on the other component (2 or 4 ) is provided on the basis of one of a laser beam emitter (50) on the one component (4 or 2) and the laser beam reflector (51) in the direction of the laser beam receiver (49) reflectable, laser beam (52, 53).

11. The device according to claim 9, wherein as a distance measuring device on the one component (4 or 2) a Seilzugpotentiometer (55) for measuring the distance (54) based on a Ausziehlänge one of the Seilzugpotentiometer (55) pulled out under tension rope (57) is provided which is mounted in particular with its cable end, at the reference mark in the form of a fastening ^¬ means (56) on the other component (2 or 4).

12. The device according to at least one of claims 1-11, wherein the display means (8) is provided for displaying a respective present correspondence of the actual displacement position with the at least one desired displacement position.

13. Device according to at least one of claims 1-12, wherein the display means (8) for displaying a respective displacement distance between the actual displacement position and the

Target displacement position and / or a displacement direction is provided by the actual displacement position to the desired displacement position.

14. Device according to at least one of claims 1-13, where ^¬ at least as a display means (8) an optical Anzeigeele- ment, in particular in the form of at least one LED (40-48) is provided.

15. The device according to claim 14, wherein the respectively present correspondence of the actual displacement position with the at least one desired displacement position or its respective displacement distance and / or their respective displacement direction by a correspondingly different display intensity of the individual optical display elements (40-48 ) and / or by a correspondingly different selection of akti ^¬ fourth optical display elements (40-48) can be displayed.

16. The apparatus of claim 15, wherein the optical display elements (40-48) are provided in a different displacement distance and / or displacement direction in a specific geometric arrangement.

17. The apparatus of claim 16, wherein on the one hand at least a first optical display element (43-45) for indicating the match and on the other hand further optical Anzeigeele ^¬ elements (40-42; 46-48) for displaying the respective shift ^¬ direction, in particular also of the respective displacement distance, in the direction (3) of the relative displaceability of the two components (2; 4) on both sides to the at least one first display element (43-45) are provided.

18. The device according to at least one of claims 15-17, wherein the display elements (40-48) are directly controllable by the associated sensors ^¬ (29-33).

19. The device according to at least one of claims 1-18, where ^¬ is provided as a display means an acoustic signal generator, in particular for outputting a dependent in its pitch of the respective displacement distance acoustic signal.

20. The device according to at least one of claims 1-19, where ^¬ as the first component, a carrier, in particular in the form of a stand (2), and the second, relative to the carrier slidably arranged, a component holder (4) for an X-ray source (5) and / or for an X-ray detector (6) of an X-ray device (1) is provided.

21. Medical device, in particular X-ray device (1), with a device according to at least one of claims 1-20 for setting a displacement position between a first component (2) and a relative to the first component displaceable second component (4) of the medical Facility .

22. A method for setting a displacement position between a first component (2) of a medical device, in particular an X-ray device (1), on the one hand and a relative to the first component (2) displaceable second component (4) of the medical device on the other hand, comprising following steps:

- Automatic, mutually non-contact detecting an actual displacement position of the second component (4) relative to the first component (2);

- Automatic display of the actual displacement position with respect to at least one predefined desired displacement position of the second component (4) relative to the first component (2);

- Moving the second component (4) relative to the first component (2) until a match of the actual Verschiebestel ^¬ ment is displayed with the at least one desired displacement position.

23. The method of claim 22, wherein the Ist-Verschiebestel ^¬ ment is detected in that at least one first sensor (31) on the one component (4 or 2) with its detection range rich by the relative displacement of the two components (2; 4) reaches at least one first marking (9; 10) arranged on the other component (2 or 4) whose position for the at least one first sensor (31) characterizing the at least one desired displacement position.

24. Method according to claim 23, wherein the actual displacement position is detected by the fact that the at least one first ^sensor (31) and / or further sensors (29, 30, 30) disposed on a component (4, 2), respectively ; 32; 33) with their respective detection region by the relative displacement of the two components (2) further 4 comprising at least a first tion marking (9; 10) upstream and downstream of marks (11-19) he rich ^¬, whose positions on the other component (2 or 4) for the at least one provided for the respective detection sensor (29-33) different approach steps of the actual Ver ^¬ sliding position to the target displacement position mark.

25. The method of claim 23 or 24, wherein the at least one marking optically, a light signal is detected by the at least one Markie ^¬ tion (9-18) in the direction of at least one light sensor (29- 33), in particular by reflection at least.

26. The method of claim 22, wherein the actual displacement ^{Stel ¬} ment is detected by a distance measuring device (49; 55) on the one component (4 or 2) a distance (54) to a reference mark (51; the other component (2 or 4) and measuring this distance (54) with at least one of the at least ^¬ a target displacement position corresponding desired distance is compared.

27. The method according to at least one of claims 22-26, wherein the respective actual position of displacement in the form of a respective displacement distance to the at least one target displacement ^¬ position and / or a respective direction of displacement of the actual displacement position reasonable to the target displacement position is shown.

28. The method according to at least one of claims 22-27, wherein the actual displacement position is displayed optically, in particular by at least one optical display element (40-48).

29. The method of claim 28, wherein the respective present agreement of the actual displacement position with the at least one desired displacement position or its respective displacement distance and / or their respective displacement direction by a correspondingly different display intensity of the individual optical display elements (40 -48) and / or by a correspondingly different selection of the activated, opti ^¬ cally display elements (40-48) is displayed.

30. The method of claim 29, wherein the second component (4) is moved relative to the first component (2) in the sense of approximating their actual displacement position to its intended desired displacement position corresponding to the respectively indicated displacement direction and / or the respectively indicated displacement distance ,

31. The method according to at least one of claims 22-30, wherein the actual displacement position is acoustically, in particular by a dependent in its pitch of the respective displacement distance acoustic signal displayed.

32. The method according to at least one of claims 22-31 using a device according to at least one of claims 1-20.