DE102010034619A1 - Treating and examining device for patient, has patient table that is supported by roller bearing assembly about vertical axis in rotating manner - Google Patents

Abstract

Treating and examining device (1) has a patient table (2) that is supported by a roller bearing assembly (5) about a vertical axis (24) in rotating manner. A disk brake, with a brake rotor disk and a caliper, is provided for locking the patient table in a desired rotational angle position. The brake rotor disk is integrated in the roller bearing assembly.

Description

Field of the invention

The invention relates to a treatment and examination device for a patient, with a patient table, which is rotatably mounted about a vertical axis by means of a rolling bearing assembly, and with a disc brake with a brake disc and a caliper for locking the patient table in a desired rotational angular position.

Background of the invention

Treatment or examination facilities with a patient table are used for examinations, surgeries or radiotherapy. For this purpose, it is generally necessary to pivot the patient table at least about a vertical axis and / or to rotate about an axis extending essentially parallel to the longitudinal axis of the patient table, in addition to a translational movement in the direction of the longitudinal axis of the patient table. This panning, turning and moving is necessary to bring the patient in any position.

During medical examination or treatment, the position of the patient table must not change. If this were the case, for example, during radiotherapy, the high-energy radiation would also irradiate and destroy healthy tissue. If the patient is operated on the patient table, there is a risk that the surgeon could seriously injure the patient if the patient table is moved inadvertently. Therefore, in the treatment or examination facilities a braking or locking device for the patient table is present, which according to the DE 10 2008 030 833 A1 may consist of a pin which can be pushed in the desired rotational angular position in a hole of a perforated ring. In addition, a solution is mentioned, which consists of a toothed ring on a rotating device and a corresponding toothed latch on a support member. Alternatively, continuously adjustable locking options can be provided, for example in the form of an eddy current brake, a disc brake or a jaw brake, without specifying how this locking or braking devices is structurally integrated into the device for supporting a patient.

Object of the invention

Against this background, the invention has the object to provide a treatment and examination device for a patient of the type mentioned above, which is simple and inexpensive, acts in each rotational angle position and avoids additional loads on the bearing assembly of the patient table.

Summary of the invention

Based on this task, the solution of the problem with a treatment and examination device of the type mentioned above is that the disc brake is integrated directly into the rolling bearing assembly. In this case, the rolling bearing assembly has at least one fixed bearing ring and an associated, rotatable with the patient table bearing ring, wherein the brake disc is connected to one of the bearing rings and the caliper is locked to the respective other bearing ring or on a stationary component in the brake disc.

Since the brake disc and the caliper cooperate directly with the rolling bearing assembly, which is a relatively large diameter rotary joint, additional loads on the bearing are avoided. Therefore, the braking effect is transmitted without play on the rotary joint and it can be a simple structural design with high clamping and braking forces on a proven design element.

The brake disc may be secured to an axial outer surface of a bearing ring rotatable with the patient table. The brake disk can, when the rolling bearing assembly is formed as a rotary joint having a cross roller bearing, the cross roller bearing having an inner or outer bearing ring, which is radially divided, between the ring parts of the split bearing ring force or positively secured. Other types of rolling bearings, such as deep groove ball bearings, tapered roller bearings or four-point ball bearings, are also suitable.

According to another embodiment, it is provided that the brake disc is integrally connected to the at least one rotatable bearing ring. As a result, no installation effort for connecting the brake disc with the rotatable bearing ring is advantageous necessary.

The disc brake is preferably designed so that it is held passive in a desired rotational angle position with a holding torque of about 1,000 Nm and actively for rotation in another desired angular position by electrical, electromechanical, pneumatic, hydraulic or mechanical actuation is solvable.

Short description of the drawing

The invention will be explained below with reference to several embodiments shown in the drawings. In the drawing shows

1 a schematic side view of a treatment or examination device with a patient table,

2 4 is a perspective cross-sectional view of a rotary joint for a treatment or examination device according to a first embodiment,

3 a perspective cross-sectional view of a rotary joint for a treatment or examination device according to a second embodiment, and

4 a perspective cross-sectional view of a rotary joint for a treatment or examination device according to a third embodiment.

Detailed description of the drawing

1 thus shows a treatment or examination device 1 with a patient table 2 that on rails 3 is mounted longitudinally displaceable. The rails 3 are on a bearing plate 4 attached, which with a lifting device 23 connected is. By means of the lifting device 23 is the bearing plate 4 and with it the patient table 2 according to the arrow 24 vertically adjustable. The lifting device 23 is at its lower end with a rolling bearing assembly 5 connected and via this according to the arrow 25 around the arrow 24 marked vertical axis rotatably mounted.

For this purpose, the rolling bearing assembly has 5 via a roller bearing with an outer ring 31 and an inner ring 32 , between which rolling elements 33 are arranged. Here is the inner ring 32 non-rotatable with the lifting device 23 and the outer ring 31 rotatably with a bottom plate 30 connected. Instead of the bottom plate 30 can the outer ring 31 be firmly connected to a chassis of a driving device, not shown here, which allows the examination device 1 to move completely horizontally. It can also be provided that the inner ring 32 rotatably with the bottom plate 30 and the outer ring 31 non-rotatable with the lifting device 23 connected is.

To the patient table 2 To lock in a defined angular position, a brake is present, which according to the embodiment of 1 a brake disc 34 which is integral with the inner ring 32 is trained. For this purpose, the hollow cylindrical inner ring 32 a radially inwardly facing ring land 34 on, which takes over the function of the brake disc. This brake disc 34 is in an opening of a caliper 35 received in such a way that when an act on the caliper 35 held brake pads 36 with a braking force this the brake disc 34 hold tight.

According to 2 is the rolling bearing arrangement 5 as a cross roller bearing 6 with a one-piece outer bearing ring 7 and one of ring parts 8th . 9 formed existing split inner bearing ring. In between, crosswise arranged, cylindrical rollers roll 10 on associated raceways of the outer race 7 and the inner ring parts 8th . 9 from.

The outer bearing ring 7 has holes 21 for connection to the bottom plate 30 and is accordingly fixed, while the inner ring parts 8th and 9 with holes 22 for attachment to the lifting device 23 are provided and accordingly with this about the vertical axis 24 can turn.

Between the ring parts 8th . 9 is a brake disc 11 used when screwing the ring parts 8th . 9 with the lifting device 23 between the ring parts 8th . 9 is trapped. A caliper 12 overlaps with brake pads 13 the brake disc 11 and is suitably with the bottom plate 30 so connected to the brake disc 11 hold in any rotational position and after releasing the brake pads 13 turn to any angle of rotation position. The hard braking and releasing takes place in a known, not shown manner, but preferably so that the disc brake 11 . 12 . 13 in a desired rotational angular position with a holding torque of about 1,000 Nm passively, for example, by spring pressure, is braked, and for rotating in another desired angular position active by electrical, electro-mechanical, pneumatic, hydraulic or mechanical actuation is solvable.

If in the region of the inner bearing ring a larger, not taken by a brake disc and a brake caliper clearance is required, it is according to the embodiment of the 3 possible, the cross roller bearing 14 with a one-piece inner bearing ring 17 and one of ring parts 15 . 16 existing, divided outer bearing ring form. In this case, the protrudes between the ring parts 15 . 16 clamped brake disc 18 radially outward and is there by a caliper 19 with brake pads 13 in an analogous manner, as with respect 2 represented and described, overlapped. In this embodiment, the ring parts 15 and 16 of the split outer bearing ring with the lifting device 23 connected while the fixed, inner bearing ring 17 with the fixed base plate 30 connected is.

According to the in 4 illustrated embodiment, the brake disc 11 with an axial outer surface of an inner bearing ring 8th . 9 or an outer bearing ring 7 be bolted. In four are only the brake pads 13 without the caliper 12 according to 2 shown. This embodiment requires no adaptation of the ring parts 8th . 9 or in an analogous manner of the ring parts 15 . 16 according to 3 to the thickness of the brake disc 11 respectively. 17 to take into account what is advantageous in terms of the tolerances to be considered for the bearing preload.

The in the 2 . 3 and 4 shown, as a cross roller bearing 6 . 14 trained rolling bearing assemblies, are particularly for the storage of about its longitudinal axis rotatable patient tables 2 suitable, as in 1 shown as they can be produced with large diameters and through the holes 21 . 22 directly with the bottom plate 30 and the lifting device 23 screw down. However, the invention is not limited to this application, but the illustrated rolling bearing arrangements in the form of cross roller bearings 6 Also very good as a journalless rotary joints for about a vertical vertical axis swivel patient tables 2 in connection with the re 2 . 3 and 4 Insert described disc brakes.

The integration of a disc brake according to the invention 11 . 12 . 13 ; 13 . 18 . 19 ; 34 . 35 . 36 in a standard cross roller bearing 6 respectively. 14 simplifies the construction, avoids additional loads on the slewing ring, works in any position of rotation, allows to apply high clamping or braking forces, and the individual elements are made of proven construction elements.

LIST OF REFERENCE NUMBERS

1

Treatment or examination device

2

patient table

3

rail

4

bearing plate

5

roller bearing assembly

6

Crossed roller bearings

7

Outer bearing ring

8th

ring part

9

ring part

10

roll

11

brake disc

12

caliper

13

Brake pads

14

Crossed roller bearings

15

ring part

16

ring part

17

Inner bearing ring

18

brake disc

19

caliper

21

drilling

22

drilling

23

lifting device

24

Arrow, stroke direction, vertical axis

25

Arrow, direction of rotation

30

baseplate

31

outer ring

32

inner ring

33

rolling elements

34

brake disc

35

caliper

36

brake lining

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008030833 A1 [0003]

Claims (6)

Treatment and examination device ( 1 ) for a patient, with a patient table ( 2 ), which by means of a rolling bearing assembly about a vertical axis ( 24 ) is rotatably mounted, and with a disc brake with a brake disc ( 11 ; 18 ; 34 ) and a caliper ( 12 ; 19 ; 35 ) for locking the patient table ( 2 ) in a desired rotational angular position, characterized in that the disc brake ( 11 . 12 ; 18 . 19 ; 34 . 35 ) in the rolling bearing assembly ( 5 . 6 . 14 ) is integrated. Device according to claim 1, characterized in that the rolling bearing arrangement ( 5 . 6 . 14 ) at least one fixed bearing ring ( 7 ; 17 ; 31 ) and an associated patient table ( 2 ) rotatable bearing ring ( 8th . 9 ; 15 . 16 ; 32 ), that the brake disc ( 11 ; 18 ; 34 ) on one of the bearing rings ( 8th . 9 ; 15 . 16 ; 32 ), and that the caliper ( 12 ; 19 ; 35 ) on the respective other bearing ring ( 7 ; 17 ; 31 ) or on a stationary component ( 30 ) in the region of the brake disc ( 11 ; 18 ; 34 ) is attached. Device according to claim 2, characterized in that the brake disc ( 11 ) on an axial outer surface of a patient table ( 20 ) rotatable bearing ring ( 8th . 9 ) is attached. Device according to claim 2, characterized in that the rolling bearing arrangement ( 5 ) as a crossed roller bearing ( 6 ; 14 ) having rotary joint is formed, that the inner or the outer bearing ring ( 8th . 9 ; 15 . 16 ) of the cross roller bearing ( 6 ; 14 ) is radially divided, and that the brake disc ( 11 ; 18 ) between the ring parts ( 8th . 9 ; 15 . 16 ) of the split bearing ring is fixed non-positively or positively. Device according to one of claims 1 to 4, characterized in that the brake disc ( 34 ) with the at least one rotatable bearing ring ( 32 ) is integrally connected. Device according to one of claims 1 to 5, characterized in that the disc brake ( 11 . 12 ; 18 . 19 ; 34 ) is passively braked in a desired rotational position with a holding torque of 1,000 Nm, and that the disc brake for rotation in another desired rotational position actively by electrical, electro-mechanical, pneumatic, hydraulic or mechanical actuation is solvable.

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