EP3244860B1 - Operating-table column - Google Patents

Description

The invention relates to an operating table column with a column part and a head part for connecting a patient support surface of a surgical table with the head part. The operating table column comprises a power supply unit arranged on the column part for supplying the operating table with energy. The head part comprises a first head part element rotatably mounted about a first rotation axis and a second head part element rotatably mounted about a second rotation axis.

The prior art discloses an operating table column having a pillar part, a power supply unit arranged on the pillar part, and a head part for connecting a patient support surface of a surgical table to the head part. In the known operating table column, the head part thereof for inclination and canting thereof about inclination and inclination axes within the head part is rotatable.

The US 2,217,783 describes an operating table with a table column inside which hydraulic lines run.

The US Pat. No. 3,206,188 relates to a hydraulically driven operating table.

The document DE 10 2011 000 628 A1 discloses an operating table column. FIGS. 4 and 5 each show a side view of this operating table column from the state of the technique. In the FIGS. 4 and 5 The surgical table column shown in the prior art comprises a pedestal, a pillar base connected to the column part 10, a head part 14, which is intended for connection to a patient support surface of the operating table, and a plurality of the head part 14 supporting actuators 16, 18, 20, the in each case a first element, ie the cylinder 36, 64, and a second element, ie the piston rod 40, 56, 68, which acts in a linear manner and acts on the head part 14. Furthermore, the known surgical table column according to FIGS. 4 and 5 Clamps 38, a joint head 42, universal joints 66, 70 and axles 54, 62.

According to the prior art is in operating tables with high adjustment, ie with a slope> 20 ° and a bevel> 15 °, with respect to FIGS. 4 and 5 the power supply between the patient support surface on the head part 14 and the power supply unit in the vicinity of the cylinder 36 by means of a lying outside the panel hose realized. In this case, the hose is realized with the energy-carrying lines in particular via a flexible hose which is laid in a U-shape between the components 14 and 36. The connection fittings S of the hose are in FIGS. 4 and 5 marked with arrows. The hose is in particular outside of the attached to the column part 10, in FIGS. 4 and 5 uncovered panel laid outdoors. Thus, the hose is exposed to the contamination of a surgical operation and must be cleanable. Furthermore, the requirements for the hose material and the connection fittings S for liquid-tight fastening of the hose with the fixed elements because of the cleanability are very high and costly. In addition, the necessary cleaning for the surgical operations staff is complex.

In the FIGS. 4 and 5 In particular, the prior art surgical table column shown has the following disadvantages. Because of the large adjustment and the above geometric arrangement of the hose outside the pivot points or axes 54 and 70 of the respective joint a relatively long hose is necessary to compensate for the relative movements, ie the tilt and / or tilting movement of the head part 14. Because of the cleanability is a relatively thick hose with unfavorable bending radii necessary. Because of the large number of complex components, this known solution is costly. Furthermore, the sealing of the outlet openings can be realized only with great effort.

FIG. 6 shows a schematic diagram to illustrate the above-mentioned disadvantages. In FIG. 6 the known operating table column with the lifting guide 1 and the lifting cylinder 2 is shown schematically. The lifting guide 1 surrounding the lifting cylinder 2 comprises at least two tubes inserted into one another as sliding push tubes. The lifting cylinder 2 makes maximum use of the height of the lifting guide 1 in order to achieve the necessary adjustment distance. In the known operating table column, the power supply from a power supply unit 3, which is attached to the top pillar element of the lifting guide 1, provided. The patient support surface 4 is connected to the power supply unit 3 with a movable hose-like energy guide 5. Typically, the power guide 5 is formed from a flexible hose filled with electrical or hydraulic lines.

As in FIG. 6 shown, the power guide 5 is arranged in a U-shape between the lifting guide 1 and the patient support surface 4, since a different space is not favorable for the final product. In particular, in the known operating table column, the inclination axis 6 and the tilting axis 7 are arranged above the lifting guide 1 in order to provide the installation space for the energy guide 5 or the hose with a hose diameter of 30 to 45 mm. A disadvantage of this known The solution is that a height I ₁ between the patient support surface 4 and the lifting guide 1 of at least 165 mm is necessary to accommodate the U-shaped jacket tube. The distance I _{2 of} the inclination axis 6 and the tilting axis 7 of the lifting guide 1 is typically 100 mm. Furthermore, in FIG. 6 the inclination and / or tilting movement of the patient support surface 4 by the arrows 8 shown schematically.

Starting from the known prior art, it is an object of the invention to provide an operating table column, which allows a simple and space-saving power supply of a surgical table.

This object is achieved by an operating table column with the features of claim 1. Advantageous developments are specified in the dependent claims.

By an operating table column with the features of claim 1, a simple and space-saving supply of an operating table with energy is possible because in particular a power supply unit is arranged on the column part and the head part about a first axis of rotation rotatably mounted first head part element and about a second axis of rotation rotatably mounted second header member comprises. The pillar member includes an actuator for effecting a lifting movement of the patient support surface. Furthermore, the actuator comprises a cover element, which is designed such that at least one hose section connected to the energy supply unit can be carried out at least partially through the first head part element in a region near the first axis of rotation. Thus, the use of a relatively long, cleanable hose for the power supply can be avoided. This allows the simple and space-saving supply of the operating table with energy.

Preferably, the cover element of the actuator extends along the first axis of rotation between two opposite sides of the column part.

It is advantageous if the radial extent of the region lying close to the first axis of rotation is less than half, preferably less than one quarter, of the radial distance of a frame portion of the first header element from the first axis of rotation. Thus, a relatively small area can be provided near the first axis of rotation, in which the hose section for the power supply is feasible.

Preferably, the cover element of the actuator comprises at least one recess for guiding the hose section in the region lying close to the first axis of rotation. Thus, the hose portion can be passed relatively close to the first axis of rotation in the head part.

Preferably, the cover member of the actuator comprises two recesses for guiding respective hose sections connected to the power supply unit in the area close to the first rotation axis, the two recesses facing the two opposite sides of the column part. Preferably, each recess comprises a rectangular profile. Thus, a plurality of hose sections can be provided for the power supply, which are each feasible in the region lying near the first axis of rotation.

It is advantageous if the radial extent of the region lying close to the first axis of rotation lies between 15 mm and 35 mm, preferably between 15 mm and 20 mm. Thus, suitable dimensions of the relatively small area for guiding the tube portion near the first axis of rotation can be provided.

According to the invention, the first head part element is designed in such a way that the hose section is carried out completely in the region near the first axis of rotation and in a further region near the second axis of rotation through the first head part. Thus, the hose portion can be guided not only in the area near the first rotation axis but also in a wider area near the second rotation axis within the head portion.

Preferably, the radial extent of the further region lying near the second axis of rotation is smaller than half the radial distance of a further frame section of the first header element from the second axis of rotation. Thus, a relatively small further area can be provided near the second axis of rotation, in which the hose section for the power supply can be guided.

Preferably, the first head part element comprises at least one recess with a round profile for guiding the hose section in the further region lying close to the second axis of rotation. Thus, the hose portion can be guided relatively close to the second axis of rotation within the head part.

Preferably, the first head part element and the second head part element are designed such that upon a Kantungsbewegung of the second head part element about the second axis of rotation a squeezing of the tube portion in the wider region near the second axis of rotation is prevented. Thus, the hose portion can be guided safely in a Kantungsbewegung the second head part element within the head part.

Preferably, the tilting movement of the second head part element relative to the first head part element takes place in an angle range of 0 ° to 25 °.

Preferably, the first header member and the second header member form a universal joint. In this case, the first axis of rotation and the second axis of rotation lie in two superimposed, parallel planes. Furthermore, the distance between the two parallel planes arranged one above the other is maximally 60 mm. Thus, a universal joint can be provided for a very safe operation of the head part.

Further, it is advantageous if the pillar part and the power supply unit arranged on the pillar part are covered by a cladding, and if the hose section running along the pillar part is completely laid inside the cladding. This causes this hose section to be completely protected by the cover. Thus, no additional protective hose is needed to cover the hose section. Furthermore, the completely laid inside the lining hose section does not need to be laboriously cleaned.

Preferably, the second head part element forms a housing for covering the tube section completely made by the first head part element. In this case, this hose section is completely enclosed by the housing formed by the second head part element. Thus, a housing for the cover of the hose portion can be provided within the head part.

The column part preferably comprises a lifting guide and a telescopic arrangement integrated in the lifting guide of at least two column sub-elements which are movable relative to one another. The lifting guide comprises a window arranged above the two relatively movable column parts for passing the tube section running along the column part from outside the column part into the interior of the column part. Thus, a shearing of the hose section be avoided by the movable column sub-elements of the telescopic assembly. This allows a robust construction of the operating table column.

Fig. 1

eine perspektivische Ansicht einer Operationstischsäule gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;

Fig. 2

eine perspektivische Ansicht des Säulenteils der in Figur 1 gezeigten Operationstischsäule;

Fig. 3

eine perspektivische Ansicht eines Operationstisches mit der in Figur 1 gezeigten Operationstischsäule;

Fig. 4, 5

Seitenansichten einer Operationstischsäule gemäß dem Stand der Technik; und

Fig. 6

eine Prinzipskizze einer bekannten Operationstischsäule.

Further features and advantages of the invention will become apparent from the following description, which illustrates the invention with reference to embodiments in conjunction with the accompanying figures. Show it:

Fig. 1

a perspective view of an operating table column according to an embodiment of the present invention;

Fig. 2

a perspective view of the column part of in FIG. 1 shown operating table column;

Fig. 3

a perspective view of a surgical table with the in FIG. 1 shown operating table column;

Fig. 4, 5

Side views of a surgical table column according to the prior art; and

Fig. 6

a schematic diagram of a known operating table column.

FIG. 1 shows a perspective view of an operating table column 100 according to an embodiment of the present invention. As in FIG. 1 The operating table column 100 comprises a pillar part 102, a power supply unit 106 arranged on the pillar part 102 and a head part 104. The head part 104 comprises a first head part element 110a rotatably mounted about a first rotation axis 108a and a second head part element 110b rotatably mounted about a second rotation axis 108b , The first header part 110a is at the column part 102 around the first Rotary shaft 108a rotatably mounted. Furthermore, the second head part 110b is rotatably mounted on the first head part 110a about the second axis of rotation 108b.

At the in FIG. 1 In the embodiment shown, the first header part 110a and the second header part 110b form a universal joint for gimbal mounting of the second header part 110b on the column part 102. As in FIG FIG. 1 As shown, the first axis of rotation 108a and the second axis of rotation 108b lie in two parallel planes arranged one above the other. These planes are parallel to the upper surface of the header 104 in its home position. The distance between the two parallel planes arranged one above the other is a maximum of 60 mm. Due to this relatively small difference in height, a very secure cardanic mounting of the second head part 110b on the column part 102 can be achieved.

According to FIG. 1 For example, the first header member 110a includes a rectangular frame having a first frame portion 122a and a second frame portion 122b. In this case, the first frame portion 122a is parallel to the first axis of rotation 108a, while the second frame portion 122b is parallel to the second axis of rotation 108b. Furthermore, in FIG. 1 that the first rotational axis 108a and the second rotational axis 108b are perpendicular to each other when projected onto a common plane. The first rotation axis 108a corresponds to a tilt axis in a tilting movement of the first header part 110a. Furthermore, the second rotation axis 108b corresponds to a tilting axis during a tilting movement of the second head part 110b. As in FIG. 1 Also shown, the second header member 110b includes a rectangular frame. This frame of the second header part 110b surrounds the first header part 110a with the frame parts 122a, 122b.

As in FIG. 1 As shown, the second header member 110b includes a through hole 134a in a frame portion opposite to the first frame portion 122a of the first header member 110a. Further, the first header part 110a includes another through hole 134b in the first frame part 122a. The through hole in the frame portion of the first header part 110a that faces the first frame part 122a is in FIG. 1 not visible. According to FIG. 1 the second axis of rotation 108b extends centrally through the through holes 134a, 134b. The through holes 134a, 134b serve to receive a rotary member which is rotatably supported in the through holes 134a, 134b and fixedly connected to the second header member 110b. Thus, the canting movement of the second header member 110b relative to the first header member 110a is enabled.

At the in FIG. 1 In the embodiment shown, the column part 102 comprises a lifting guide 128 and two column part elements 130a, 130b movable relative to one another. These two pillar part elements 130a, 130b are movable parallel to a longitudinal axis of the pillar part 102, that is, in the height direction. Furthermore, the two relatively movable column sub-elements 130a, 130b form a telescopic arrangement, which is integrated in the lifting guide 128. The telescopic arrangement serves to adjust the height of the operating table column 100.

In the FIG. 1 shown power supply unit 106 is connected to a first hose portion 118a and a second hose portion 118b. The first tube portion 118a extends substantially through the head portion 104 while the second tube portion 118b extends along the column portion 102. The power supply unit 106 includes, for example, a hydraulic power unit. Furthermore, the hose sections 118a, 118b include, for example, a plurality of electrical and / or hydraulic lines. As in FIG. 1 2, the second tube section 118b is shown by a above the two relatively movable column sub-elements 130a, 130b arranged window 132 through feasible. The window 132 is provided in the lift guide 128 of the pillar part 102.

In the FIG. 1 shown operating table column 100 is formed such that the first tube portion 118a in a first region 120a near the first axis of rotation 108a and in a second region 120b near the second axis of rotation 108b through the head portion 104 can be performed. The second region 120b near the second rotation axis 108b is in FIG. 1 clearly visible. According to FIG. 1 For example, this second region 120b is formed by a recess 126 in the first frame portion 122a of the first header part 110a. Furthermore, the recess 126, for example, comprises a round profile, the height of which decreases monotonically with increasing radial distance from the second axis of rotation 108b. By providing this profile for guiding the first tube section 118a, a squeezing of this tube section 118a during a tilting movement of the second head section element 110b about the second axis of rotation 108b can be prevented. In this case, the tilting movement of the second head part 110b should be performed relative to the first head part 110a in an angular range of 0 ° to 25 °. In particular, an angle of 0 ° corresponds to the in FIG. 1 shown basic position of the head part 104, in which the first head part element 110a and the second head part 110b are each aligned perpendicular to the longitudinal axis of the column part 110.

FIG. 2 shows a perspective view of the column part 102 of FIG FIG. 1 shown operating table column 100th In FIG. 2 For example, the first area 120a near the first axis of rotation 108a is clearly visible. As in FIG. 2 The column part 102 comprises an actuator 112 with a cover element 114 FIG. 2 The lid member 114 shown extends along the first axis of rotation 108a between opposite sides 116a, 116b of the pillar portion 102. The first axis of rotation 108a extends centrally through a received in the upper region of the column portion 102 pivot pin 136. The pivot pin 136 extends through two through holes in the two opposite sides 116a, 116b of the column part 102 and by the cover member 114 of the actuator 112. Further, the pivot pin 136 on the Column part 102 rotatably mounted and fixedly connected to the first head part 110a. Thus, a tilting movement of the first header part 110a relative to the column part 102 can be achieved. The in FIG. 2 shown actuator 112 serves to adjust the height or carrying out a lifting movement of the operating table column 100th

According to FIG. 2 For example, the lid member 114 of the actuator 112 includes two recesses 124a, 124b having a rectangular profile. The two recesses 124a, 124b face the two opposite sides 116a, 116b of the column part 102. Further, the two recesses 124a, 124b serve to guide respective tube sections connected to the power supply unit 106 in the first area 120a located near the first rotation axis 108a. In particular, in FIG. 2 the hose sections 118a, 118b connected to the power supply unit 106 are shown. The first tube portion 118a is guided by the first recess 124a and extends in the first area 120a near the first axis of rotation 108a. Another hose section connected to the power supply unit 106, which can be guided by the second recess 124b, is shown in FIG FIG. 2 not shown. Referring to FIGS. 1 and 2 For example, the first tube portion 118a may be completely passed through the first header member 110a by means of the recess 124a of the lid member 114 and the recess 126 of the first header member 110a both in the first region 120a near the first rotational axis 108a and in the second region 120b near the second rotational axis 108b be performed through. Furthermore, the first hose section 118a can also be continued through the second head part element 110b and thus through the entire head part 104.

At the in FIG. 2 shown rectangular profile of the recesses 124a, 124b corresponds to the radial extent of the first portion 120a, for example, a radial distance of a lateral edge of the lid member 114 from the first axis of rotation 108a. The recesses 124a, 124b of the cover element 114 and the recess 126 of the first head part element 110a can be dimensioned such that the first area 120a and the second area 120b have relatively small areas with a small radial extent about the first axis of rotation 108a and the second axis of rotation 108b, respectively represent. In particular, the radial extent of the first region 120a is relatively small compared to the radial distance of the first frame portion 122a of the first header member 110a from the first axis of rotation 108a. Further, the radial extent of the second region 120b is relatively small compared to the radial distance of the second frame portion 122b of the first header member 110a from the second axis of rotation 108b.

In FIG. 2 the second tube section 118b passed through the window 132 is clearly visible. As in FIG. 2 As shown, this tube section 118b is led from outside the column part 102 into the interior of the column part 102. The two relatively movable column subelements 130a, 130b of the telescopic arrangement integrated in the lifting guide 128 are movable only downwards relative to the window 132 arranged above it. Thus, shearing of the second tube portion 118b passed through the window 132 can be prevented.

FIG. 3 1 shows a perspective view of an operating table 200 with the operating table column 100 shown in FIG. 1. From the operating table column 100, only the second head part 110b is partially visible. The column part 102 and the power supply unit 106 of the operating table column 100 arranged on the column part 102 are covered by a shroud 204. The of the disguise 204 covered components of the operating table column are arranged on a foot 206 of the operating table 200. Referring to FIG. 1 and 3 The head part 104 of the operating table column 100 serves to connect a patient support surface 202 of the operating table 200 to the head part 104. The second rotation axis 108b running inside the head part 104 is in FIG. 3 shown. In a Kantungsbewegung the second head part 110b about the second axis of rotation 108b, the patient support surface 202 is moved accordingly. The lifting movement of the patient support surface 202 is effected by the actuator 112 of the operating table column 100.

According to FIG. 1 and 3 For example, the tube sections 118a, 118b, which extend from the power supply unit 106 in the direction of the patient support surface 202, are completely covered by a housing formed by the second head section element 110b and the covering 204. Thus, robust operation of the operating table 200 is possible without the use of additional protective hoses. Furthermore, the completely covered tube sections 118a, 118b do not have to be laboriously cleaned.

The present invention provides a clever arrangement of the tube portion 118a near the first axis of rotation 108a, also referred to as the inclination axis, and near the second axis of rotation 108b, also referred to as the angle axis. This allows a very short routing of the tube section 118a. The arrangement of the universal joint with a height difference of the canting and tilting axis 108b, 108a of a maximum of 60mm leads to the in FIG. 1 shown arrangement to a very safe function.

The advantages of the operating table column 100 according to the invention are summarized below. At least one recess 126 is provided in the first head part element 110a, so that during an adjustment movement of the second head part element 110 b does not take place about the tilting axis 108 b squeezing of the tube portion 118 a by the specially shaped frame portion 122 a of the first head portion member 110 a at an angle about the horizontal of the Kantungsachse 108 b from 0 ° to 25 ° in this arrangement. The clever arrangement of the at least one tube section 118a makes it possible to lay each tube section within the panels. In contrast, this is not possible with known operating tables. According to the prior art, the lines typically have to be enveloped by a bellows or a protective tube in order to achieve the high adjustment performance. According to the present invention, the covering function is taken over in particular by the housing formed by the second head part element 110b, which also receives the load of the patient support surface 202. The window 132 is height-arranged such that the trim 204 completely covers the window 132. The tube sections 118a, 118b may be laid by the power supply unit 106 under the panel 204 through the window 132 within the outer lift guide 128 through the two-sided recesses 124a, 124b near the first axis of rotation 108a. The tube sections are protected by the high arrangement of the window 132 according to the invention from shearing off by the movable column subelements 130a, 130b of the telescopic arrangement integrated in the lifting guide 128. According to the present invention, the at least one recess 124a is mounted in the cover element 114 of the actuator 112 provided for the lifting drive. By this advantageous arrangement no height is wasted. In contrast, in known operating tables a space of at least 40mm in height between the patient support surface and the housing of the head part for the flexible laying of the hose is given away.

For the user, the advantage according to the invention results that the hose is not laid outdoors and does not need to be specially cleaned. The inventive Solution is more cost effective, as electric cables or pressure hoses can be used without special expensive precautions like protective hoses.

LIST OF REFERENCE NUMBERS

1 - 8, 10 - 70

Components of a surgical table column according to the prior art

100

Operating table column

102

column part

104

headboard

106

Power supply unit

108a, 108b

axis of rotation

110a, 110b

Headboard element

112

actuator

114

cover element

116a, 116b

Side of the pillar part

118a, 118b

hose section

120a, 120b

Area near the axis of rotation

122a, 122b

frame section

124a, 124b, 126

recess

128

lift guide

130a, 130b

Columns subelement

132

window

134a, 134b

Through Hole

136

pintle

200

operating table

202

Patient support surface

204

paneling

206

pedestal

Claims (14)

1. An operating table column (100) having a column part (102), and a head part (104) for connecting a patient support surface (202) of an operating table (200) to the head part,
   having a power supply unit (106), situated on the column part (102), for supplying the operating table (200) with power,
   wherein the head part (104) includes a first head part element (110a) that is supported so as to be rotatable about a first rotational axis (108a), and a second head part element (110b) that is supported so as to be rotatable about a second rotational axis (108b),
   wherein the column part (102) includes an actuator (112) for bringing about a lifting motion of the patient support surface (202),
   wherein the actuator (112) includes a cover element (114), characterized in that the first head part element (110a) is designed in such a way that at least one hose section (118a) connected to the power supply unit (106) is guided completely through the first head part element (110a) in an area (120a) close to the first rotational axis (108a) and in a further area (120b) close to the second rotational axis (108b).
2. The operating table column (100) according to Claim 1, characterized in that the radial extension of the area (120a) situated close to the first rotational axis (108a) is less than one-half, preferably less than one-fourth, the radial distance of a frame section (122a) of the first head part element (110a) from the first rotational axis (108a).
3. The operating table column (100) according to Claim 1 or 2, characterized in that the cover element (114) of the actuator (112) has at least one recess (124a) for guiding the hose section (118a) in the area (120a) situated close to the first rotational axis (108a).
4. The operating table column (100) according to one of Claims 1 to 3, characterized in that the cover element (114) of the actuator (112) has two recesses (124a, 124b) for guiding respective hose sections, connected to the power supply unit (106), in the area (120a) situated close to the first rotational axis (108a), wherein the two recesses (124a, 124b) face the two oppositely situated sides (116a, 116b) of the column part (102).
5. The operating table column (100) according to Claim 3 or 4, characterized in that each recess (124a, 124b) includes a rectangular profile.
6. The operating table column (100) according to one of Claims 1 to 5, characterized in that the radial extension of the area (120a) situated close to the first rotational axis (108a) is between 15 mm and 35 mm, preferably between 15 mm and 20 mm.
7. The operating table column (100) according to one of the preceding claims, characterized in that the radial extension of the further area (120b) situated close to the second rotational axis (108b) is less than one-half the radial distance of a further frame section (122b) of the first head part element (110a) from the second rotational axis (108b).
8. The operating table column (100) according to one of Claims 1 to 7, characterized in that the first head part element (110a) has at least one recess (126) having a circular profile for guiding the hose section (118a) in a further area (120b) situated close to the second rotational axis (108b).
9. The operating table column (100) according to one of Claims 1 to 8, characterized in that the first head part element (110a) and the second head part element (110b) are designed in such a way that squeezing of the hose section (118a) in a further area (120b) situated close to the second rotational axis (108b) is prevented during a tilting motion of the second head part element (110b) about the second rotational axis (108b).
10. The operating table column (100) according to Claim 9, characterized in that the tilting motion of the second head part element (110b) relative to the first head part element (110a) takes place in an angular range of 0° to 25°.
11. The operating table column (100) according to one of Claims 1 to 10, characterized in that the first head part element (110a) and the second head part element (110b) form a cardan joint, wherein the first rotational axis (108a) and the second rotational axis (108b) are situated in two superposed parallel planes, and wherein the distance between the two superposed parallel planes is 60 mm maximum.
12. The operating table column (100) according to one of Claims 1 to 11, characterized in that the column part (102) and the power supply unit (106) situated on the column part (102) are covered by cladding (204), and the hose section (118b) extending along the column part (102) is laid completely inside the cladding (204).
13. The operating table column (100) according to one of Claims 1 to 12, characterized in that the second head part element (110b) forms a housing for covering the hose section (118a) that is guided completely through the first head part element (110a), and this hose section (118a) is completely enclosed by the housing that is formed by the second head part element (110b).
14. The operating table column (100) according to one of Claims 1 to 13, characterized in that the column part (102) includes a lifting guide (128), and a telescoping assembly of at least two column part elements (130a, 130b) that are movable relative to one another, which is integrated into the lifting guide (128), and the lifting guide (128) includes a window (132), situated above the two column part elements (130a, 130b) that are movable relative to one another, for guiding the hose section (118b) that extends along the column part (102), from outside the column part (102) into the interior of the column part (102).

Images