CN107809991B

CN107809991B - Medical bed and/or nursing bed and side guard for same

Info

Publication number: CN107809991B
Application number: CN201580081106.1A
Authority: CN
Inventors: M·班思曼; J·麦林科夫
Original assignee: Stiegelmeyer GmbH and Co KG
Current assignee: Stiegelmeyer GmbH and Co KG
Priority date: 2015-06-23
Filing date: 2015-06-23
Publication date: 2020-03-03
Anticipated expiration: 2035-06-23
Also published as: EP3313348A1; PL3313348T3; EP3313348B1; DE112015006652A5; WO2016206668A1; CN107809991A

Abstract

The invention relates to a medical and/or nursing bed (1) with a side underrun protection, wherein the side underrun protection comprises an outer leg (30) and a central leg (70), each of the outer leg and the central leg comprising a lower pivot point (32, 72) for pivotably supporting the leg on the frame of the bed (1), on a fixation element attached to the bed, or on a guide (20) attached to the bed, further wherein the side underrun protection comprises at least two longitudinal bars (40, 50, 60), each of which has a first end pivotably supported on the outer leg (30) and a second end provided with a bar guide (45, 150, 160) to determine the position and orientation of the second end of the longitudinal bar (40, 50, 60) relative to the central leg (70), by having the two legs (30, 70) pivot around the lower pivot point (32, 72), 72) And the side underrun protection can be moved from the reclined position to the upright position.

Description

Medical bed and/or nursing bed and side guard for same

Technical Field

The present invention relates to a medical and/or nursing bed with a side underrun protection, and a side underrun protection for attachment to the nursing bed.

Background

Side rails on beds are well known. The function of these side barriers is to prevent a person lying in the bed, for example, rolling out of the bed while sleeping, falling on the floor and possibly being injured. Depending on the particular situation of use, it may be required that the side underrun protection covers the entire long side of the bed or only part of the long side. Side guards may be provided along both long sides of the bed, but side guards extending along only one side edge will be considered below. On the other long side, a side guard rail of similar design, a guard rail of a different design, or no guard rail at all may be provided.

The side rail should meet various requirements. First, the side rails should be able to be moved from a reclined position, in which the long sides of the bed are free, to an upright position as easily as possible. Furthermore, the side underrun protection should not be annoying to be noticeable when in the reclined position, and ideally it should be completely invisible. Also, the side underrun protection should be manufactured as easily and cost-effectively as possible while ensuring that it is sufficiently strong. The side underrun protection should also be arranged to be moved to an upright position in which only a part of the long side of the bed is covered. It is also desirable that the user or caregiver be able to vary the coverage of the long side of the bed as desired. Documents US 3055020A, DE 8331386U 1 and FR 2976791 a1 show side guardrails, each of which has a parallelogram linkage arrangement. Documents FR 2815527 a1, US 3220024 a and US 6789280B 1 comprise pull-out side rail extensions.

Disclosure of Invention

It is an object of the present invention to provide a medical and/or nursing bed and a side underrun for such a bed which in a more satisfactory manner meet the above-mentioned requirements.

This object is achieved by a bed and a side underrun protection according to the independent claims. Advantageous embodiments can be derived from the dependent claims.

The hospital and/or care bed may comprise side barriers, wherein the side barriers comprise an outer leg and a central leg, each of the outer leg and the central leg comprising a lower pivot point for pivotably supporting the legs, the pivot points being located on an upper frame of the bed, fastened to a stationary element of the bed, or fastened to a guide of the bed. The side underrun protection further comprises at least two longitudinal bars, each longitudinal bar having a first end pivotally supported on the outer post and a second end provided with a bar guide to determine the position and orientation of the second end of the longitudinal bar relative to the central post, such that the side underrun protection can be moved from the reclined position to the upright position by pivoting the two posts about their lower pivot points. The rod guide is preferably a pivot bearing for the upper longitudinal rod and a slide for the other rods, which is a sliding (bearing) guide of the longitudinal rod to the extension rod, as will be explained further below. Due to this construction, i.e. due to the four-member mechanical linkage, the side rail can be laid down or lifted very easily, since only a corresponding pivoting movement is required. The lifting of the side rails corresponds to the lying down thereof. The expression that the bars are supported at their "ends" does not necessarily mean that the bars cannot go beyond their supporting position, but is intended to describe the orientation of each bar. For example, as with the upper pole described further below, a gripping area of the hand may be provided on the exterior of the support.

In particular, the extension post of the side underrun protection can be arranged directly adjacent to the central post, which extension post can pivot together with the central post when the side underrun protection is moved from the reclined position to the upright position, and the extension post can also be moved relative to the central post once the side underrun protection is in the upright position. The direction of this movement is preferably the axial direction of the longitudinal rod, which in particular corresponds to the longitudinal direction of the side underrun protection. It has been found that users prefer this two-part construction because the basic setting of the upright position can be carried out quickly and the guard rail can then be extended easily to obtain the desired coverage of the long sides of the bed by the side guard rails.

Preferably, the extension bar is pivotably connected with the extension post and can be moved relative to the center post by means of a guide, in particular a slide, so that a side barrier function can be produced between the center post and the extension post when the extension post is at a distance from the center post. Thus, the side underrun protection can be extended only by moving the extension post.

In particular, the extension rods are assigned to at least one longitudinal rod, and the at least one extension rod assumes the function of guiding the longitudinal rod assigned thereto relative to the central column. Thus, no rotational bearings are required at the central column end of these longitudinal rods, since the extension rods can also provide the necessary bearing function.

Furthermore, an extension bar may in particular be assigned to one longitudinal bar, and in particular an extension bar may be assigned to each longitudinal bar. One or more of the longitudinal bars at least partially encase the associated extension bar and/or one or more of the extension bars at least partially encase the associated longitudinal bar. Thus, the stability of the resulting pole assembly can be increased and the side underrun protection does not appear cumbersome when handling the upright position, as the inner pole is not visible.

In particular, the side underrun protection comprises at least one accessory, in particular an extension rod, which is supported relative to the central post and which is arranged to locate the second end of one of the longitudinal rods relative to the central post via the slideway. Since the extension pole is supported by the center pillar, reliable guiding and a strong structure can be achieved.

And, when the side underrun protection is in the reclined position, the longitudinal bars and the posts are substantially parallel to the plane of the bed frame. This relates to the basic profile of the individual components and not to accessories such as projections. The expression "substantially" includes a deviation of +/-3 deg., in particular a deviation of +/-1.5 deg.. Thus, a space-saving construction can be obtained. When the side underrun in this way, its upper edge can thus be situated so far below the upper edge of the mattress that a person coming from the bed will not come into contact with the side underrun.

Furthermore, in particular, a gripping area is provided on the longitudinal and/or extension railing, which gripping area is in the highest position when the side railing is lying down, at least a part of which area can be enclosed by the user's hand. Alternatively, this feature can be especially elucidated in that, in the lying down position of the side underrun protection, at least 10cm is provided at the bottom of the uppermost longitudinal bar (and/or extension bar)²Has a vertical dimension of at least 1.5cm, so that four fingers (or fingertips) can be inserted into this space to lift the longitudinal rod, i.e. to move the longitudinal rod in a vertical direction. Thus, the side rail when lying down is not a single solid piece, but rather the user can easily grasp the grip portion and pivot the rail to an upright position.

Furthermore, when the side underrun protection is pivoted from the reclined position into the upright position, the extension post can be pivoted about a first axis of rotation and the central post can be pivoted about a second axis of rotation, the two axes of rotation being largely coaxially arranged. This is achieved by providing a rotational or pivot bearing for each of the two axes of rotation. If the axes are not the same, the side underrun protection can get stuck or jammed.

Also, the extension bar may be telescopic, thereby increasing the distance the side guard rail may be extended.

Preferably, locking means can be provided to enable the side underrun protection to be held in its locked state in its upright and/or reclined position, wherein in particular no connecting means are provided between the side underrun protection and the head end or foot end of the bed. Thus, the side rails can be used independently of the particular head end or foot end. There is no need for any side rails at the head end to be in a laid down position to give it an aesthetically unattractive appearance. Also, the side underrun protection is very stable, since in the upright position the locking function takes place inside the side underrun protection, i.e. between the moving parts themselves, or between the stanchions and the bed frame or the guides of the side underrun protection.

Corresponding side guards are also provided.

Drawings

Preferred embodiments of the present invention will be explained below with reference to the accompanying drawings:

figure 1 shows a perspective view of the bed with the side rails in the reclined position,

fig. 2 shows a part of the bed according to fig. 1, wherein the side underrun protection is in its upright position,

figure 3 shows the bed with the side underrun protection in its extended position,

fig. 4 shows a detail of the side underrun protection according to fig. 1 in the lying position, in which the panel 22 has been removed,

figure 5 shows a perspective view of the side underrun protection in a transitional phase from the reclined position to the upright position,

figure 6 shows a detail of the locking of the central pillar with the upper longitudinal bar,

figure 7 shows a detail of the side underrun protection in a slightly extended position of the side underrun protection,

FIG. 8 shows an alternative embodiment of a side rail with an extension rod that extends in a telescopic manner, an

Fig. 9 shows a bottom view of the support portion of the center pillar.

Detailed Description

Fig. 1 shows a hospital and/or care bed comprising four feet 12 attached to a lower frame 10 (fig. 3). The lower frame is a carrier for the upper frame. The upper frame can be raised and lowered, and its angular position can be adjusted by using a driver (not shown). The upper frame serves as a carrier for the head end 5 and the foot end 6 as well as the lower leg support 7, the thigh support 8 and the back support 9. Mattresses (not shown) are placed on these supports, the position of which can be adjusted by means of actuators (not shown). On the long side on the left (front in fig. 1) a part of the side underrun protection can be seen, namely the outer post cover 33 of the outer post 30 and the upper longitudinal bar cover 43 of the upper longitudinal bar 40. The side rail itself is not visible because it is in its reclined position and is covered by the panel 22. In the recumbent position, the upper edge of the side underrun protection is several centimeters higher, for example up to 5cm higher, than the carriage 7, the carriage 8 and the carriage 9 in the lowered position. When a mattress is placed on these supports, the upper edges of the cover 43 and the cover 33 will be substantially lower than the upper edge of the mattress, e.g. at least 2cm lower. Thus, for example, a person can sit comfortably on the side of the bed when leaving the bed, and the person's thighs will not make unpleasant contact with the cover when the mattress is compressed by the weight of the person during the person's lying down.

Figure 2 shows the side underrun protection in its upright position. In this position the long sides of the bed are partly covered by the side underrun protection, so that the person is protected to a large extent from the risk of falling from the bed. Protection of the head end is more important because there is a greater risk of injury when the patient falls first or the upper body falls first than when he or she falls in other ways. The strut 70 is referred to as a "center strut". However, it is preferably not located exactly in the centre of the long side of the bed, but rather closer to the head end in a ratio of 60: 40. Because, when a person lies in the bed, the buttocks are generally in the middle of the bed (as viewed longitudinally) and because the buttocks will serve as a pivot point when a person enters the bed, a central pillar 70 projecting upwards in the exact centre will make the process of entering the bed more difficult.

The guide 20 is present in front of the front side member of the upper bed frame (not shown). Alternatively, the function of the guide may be fulfilled by the side members of the bed frame. The guide 20 serves to support the central column 70 and the outer columns 30 adjacent the corners of the head end of the bed 1. For this purpose, the pivot points 72 and 32 are provided in the form of rotational bearings about which the strut can pivot. The other end of each of the strut 30 and the strut 70 includes a bearing point 44 and a bearing point 45 by means of which the upper longitudinal rod 40 is rotatably supported relative to the strut. In this way, a four-member mechanical linkage is obtained, and a parallelogram linkage is obtained because the lengths of the opposing elements are the same, i.e. the distances between the bearing points are equal. This is pivotable between the extreme positions according to fig. 1 and 2, the upper longitudinal bar 40 always remaining parallel to the upper bed frame.

In addition, when the side rail is in its upright position, it can be moved to the extended position shown in FIG. 3. In the state according to fig. 1 and 2, the extension strut 170 is directly adjacent to the central strut 70, in the extended position the extension strut 170 having been moved away from the central strut by a movement towards the foot end. To guide this movement, a slide 179 is used on which the extension strut is rotatably supported by means of a bearing 172. Thus, the slide 179 is movable along the guide 20 in the longitudinal direction of the bed. In order that the slider does not contact the pivot point 72, it includes a corresponding slot. With the structure described in further detail below, the pivot points 172 (see FIG. 9) of the extension strut and the center strut are collinear when the extension strut rests directly on the center strut 70. This condition exists in the recumbent position, the upright position and all intermediate stages.

At the upper end of the extension strut 170, the extension bar 140 is pivotably supported by means of a swivel bearing 145. When the side underrun protection is in the upright position, the extension rod is fully contained within the cavity of the upper longitudinal rod 40 and is free to slide back and forth in the axial direction. To allow the side rails to be moved to the upright position, the swivel bearings 145 are co-linear with the bearings 45 of the center post 70 previously described for the upper longitudinal rod 40. Fig. 6 is a schematic view of the transition area from the central post 70 to the upper longitudinal bar 40 seen from the inside of the bed, where the extension of the side underrun protection has been pulled out slightly. Supported on the inside of the upper longitudinal bar 40 is a U-shaped portion 79 which is permanently connected to the central pillar 70. The side walls of the "U" shape of the U-shaped portion 79 are rotatably supported on the longitudinal bar 40 by pivot points 45. The extension bar 140 is supported within the side walls of the U-shaped portion 79. As such, the rod is rotatably supported on carrier portion 180 via bearing point 145 (shown in phantom), wherein carrier portion 180 is permanently connected to extension strut 170. Since the upper longitudinal bar 40 is clear at the bottom from the bearing point 45 to the end of the bed directed towards the foot end, the assembly of extension elements can move relative to the longitudinal bar 40. Because bearing point 145 of carrier portion 180 is offset from extension strut 170 in a direction toward the head end, carrier portion 180 can be moved from the position shown in fig. 6 into longitudinal rod 40 such that bearing point 45 and bearing point 145 become collinear. In this state of upright position relative to the side underrun protection, it is possible to move the previously described parallelogram linkage of the side underrun protection.

Under the upper longitudinal bars 40 and the upper extension bars 140, additional bars are arranged, namely

longitudinal bars

50 and 60 and extension bars 150 and 160. In fig. 2, only the

extension rods

150 and 160 can be seen, as the

longitudinal rods

50 and 60 are inside these

extension rods

150 and 160, where they can freely move axially back and forth. Thus, the

longitudinal bars

50 and 60 are only visible in the extended position according to fig. 3. These longitudinal rods are rotatably supported on the outer strut 30 at pivot point 54 and pivot point 64. When the side rail is in the extended position, it cannot be pivoted to the reclined position because the extension bar 150 and the extension bar 160 are located in the slide ways of the center post 70, which would hinder the pivoting movement. To enable the side rail to be pivoted to the reclined position, pivot points 155 and 165 are provided at the connection between the extension bar 150 and the extension bar 160 and the extension post 170. These pivot points are arranged on the

projections

158 and 168 of the extension column, the

projections

158 and 168 being directed towards the head end of the bed at the vertical level of the

longitudinal bars

50 and 60 and having a length such that they can pass through the centre column 70 when the extension column 170 rests on the centre column. Bearing points 155 and 165 are located within the parallelogram of the mechanical linkage previously described. Thus, during pivoting of the side underrun protection, not only the parallelogram described above can be moved, but the assembly of extension bar 150 with longitudinal bar 50 and the assembly of extension bar 160 with longitudinal bar 60 can also be pivoted in pairs, during which they are supported by bearing point 54 and bearing point 155 in one case and bearing point 64 and bearing point 165 in the other case. During this process, each of the

longitudinal bars

40, 50 and 60 is moved from the upright position to the reclined position with parallel offset.

Figure 4 shows how the elements of the side underrun protection are pressed together in the reclined position. All the bars and all the struts are parallel to each other with respect to their original orientation. This orientation is achieved by a projection provided on the pillar. Thus, the previously described lengths of the projection 158 and the exit 168 are not equal. Specifically, the projection 158 is longer than the adjacent projection 168 of the underlying bar 160 by an amount equal to the height of the extension bar 160. Protrusions 78 and 178 are provided on center post 70 and extension post 170, respectively. Because the projections are not connected to the ends of the struts when viewed in the vertical direction (see fig. 2), but are a few centimeters below the ends to create an open space in the space between the projections 78 (or the projections 178) and the longitudinal bars 40 (or the longitudinal bars 140). The user's hand or at least fingers (or fingertips) can be inserted into this free space to grasp the free end of the upper longitudinal bar 40 or the upper extension bar 140 from below. First, when the side rail is in the upright position, the user can stabilize himself by this grip when getting up. Secondly, when the side underrun protection is in the reclined position as shown in fig. 1, the user or caregiver can bring the side underrun protection into the upright position by using the grip region 49 and the grip region 149.

Figures 4 and 2 show the damping element 39 which is compressed during the displacement of the side underrun protection into the reclined position and is therefore able to absorb the impact forces which occur when the side underrun protection is lowered into the reclined position. Also, a compression spring element may be provided in the damping element to make it easier for the user to lift the side underrun protection from the reclined position.

Figure 5 illustrates the mobility of the various components during movement of the side underrun protection from the reclined position to the upright position defined as the position in which the post 30 and post 70 have been pivoted upwardly to the vertical position and the side underrun protection extension has not yet been pulled out. In order to keep the side underrun protection in this position, a locking device is provided, which is embodied as a lever 47 according to fig. 6. One end of the lever is configured as a fulcrum and is received within and rotatably supported on the upper longitudinal rod. An actuator extends downwardly to the open gripping area at the opposite end of the lever 47 and a latch is detachably engaged in a corresponding opening, the latch preventing the side guard from pivoting to the reclined position when the parts are engaged. A stop (not shown) of the guide member 20 adjacent the pivot point 32 cooperates with the post to ensure that the side rail can only pivot from 0 deg. to 90 deg. in the upright position and no longer pivot. In addition to providing an actuator as the pivot lever 47, the locking function described above can also be achieved by a sliding bolt (not shown) which can slide axially back and forth within the upper longitudinal bar and prevent the side underrun fence from pivoting by engaging it within a corresponding recess in the U-shaped portion 79.

Locking means may also be provided to hold the side underrun protection in the maximum possible extended position to prevent reverse movement to the upright position. This function may be accomplished by a button located on one of the extension bar 150 or the extension bar 160 at a distance from the free end of the bar, the button resting on the center post when in an unpressed state, but slidable through an opening in the center post that serves as a slide for the extension bar when in a pressed state.

Fig. 7 shows a perspective view of a partial region according to fig. 6, showing details of the bearing 165 and the bearing 155. Preferably, the bearings are injection molded plastic components that are inserted into the respective portions (preferably aluminum) of the

extension rods

150 and 160 and into the

projections

158 and 168 and permanently secured thereto. The openings in the center post 70 for the extension rods are padded with a low friction plastic to ensure good sliding characteristics and to prevent scratches on the extension rods.

The above described structure provides several advantages. First, the operation of the side guard rail becomes easier. In many specific applications only one side rail covering only a part, preferably the upper half, of the bed is required, since in many cases this is sufficient to provide the person with complete protection from falling from the bed. Furthermore, the lifting movement described previously can be achieved with only one hand. When the side underrun protection is in the reclined position, the user (or caregiver) must only be able to lift the handle 49 by a pivoting motion, and the previously described locking function will keep the side underrun protection in the upright position. With conventional known side underrun protection, several operations are usually required. For example, a first operation is required to move the center post upright or downward, and then a second operation is required to lock the position of the side rails.

The design concept described above may also provide an attractive appearance to the side underrun protection in the two most common states, i.e. lying down and standing upright. Thus, in the reclined position shown in fig. 1, primarily the outer post housings 33 and the longitudinal bar housing 43 are visible. These covers may provide shock absorption or have an attractive surface, such as wood grain. The longitudinal bar cover 43 remains visible in the upright position. Also, a suitable visible surface 173 (see fig. 7) may be provided on extension post 170, i.e., a surface that can cooperate with the extension post in the upright position to cover a corresponding outer surface of center post 70.

Cost-effectiveness can also be achieved in terms of manufacturing costs. It is known that conventional side underrun protection is usually built in such a way that it covers part of the longitudinal side and the entire long side of the bed, so that two separate side underrun protection are used, each side underrun protection having two legs. Thus, a total of four struts are present. In the embodiments described herein, only three struts are required, i.e., outer strut, center strut, extension strut. Also, the extension of the side rail can be pulled out to different extents so that the user can adjust the extension function to meet his best liking.

As mentioned above, the center post 70 is preferably not centered exactly, but is offset toward the head end of the bed by an amount, for example, 30 centimeters. Because, for structural reasons, the length of the extension bar cannot be greater than the distance between the outer post 30 and the central post 70 in the upright position, even if the side rails are in the extended position they cannot cover the entire length of the bed; in contrast, the position according to fig. 3 represents the maximum possible coverage in the case of the use of the single extension rod described previously. At the foot end of the bed, an area not protected by the side rails is shown. This area may thus be advantageous as it is small enough to prevent a person from falling from the bed through this area, however, at the same time it allows the person to leave the bed even when the side underrun is extended. However, there are also fields of application where the side underrun protection is required to completely cover the long side. In this case, the extension pole may include a telescoping member, as shown in fig. 8. Thus, FIG. 8 shows an alternative embodiment of an extension pole. These extension rods are now configured as two telescoping members, one of which can slide into and out of the other. Thus, the maximum length of extension of the side underrun is increased and the long side of the bed can be fully covered. The notches acting on the mutual engagement between one telescopic element and the other ensure that the maximum pull-out length can be reached but not exceeded. When the side rail is again pushed back from the extended position to the upright position, the extension bar 150 'or the extension bar 160' may collide with the opening of the center post. To prevent this, there is a slot in the bottom surface of the extension bar into which the open inner guide projection of the center post extends to position the extension bar in the lateral and vertical directions.

Fig. 9 shows the direction of the bearing axis of the lower bearings of the center post 70 and the extension post 170. The angled portion 79 is also arranged on the guide 20, in particular welded thereto. Which is used to receive a fastening bolt (not shown in fig. 9) that supports the center post. The bearing point is located at a distance from the guide 20 and the slide 179. Furthermore, an additional angle portion 171 is provided on the sliding piece 179, which angle portion is pivotably supported relative to the sliding piece 179. The pins required for this purpose are not shown. The angled portion 171 is permanently connected to the post 170, in particular, welded thereto. As a result of this configuration, the objective of the bearing axis 72 and the bearing axis 172 being collinear is achieved so that the center strut 70 and the extension strut 170 can be moved together.

Claims

1. A hospital and/or care bed (1) with side guards, wherein the side guards comprise an outer strut (30) and a central strut (70), each of which comprises a lower pivot point (32, 72) for pivotably supporting a strut on the frame of the bed (1), or on a fixed element attached to the bed, or on a guide (20) attached to the bed, wherein the side guards further comprise at least one longitudinal bar, each of which has a first end pivotably supported on the outer strut (30) and a second end provided with a bar guide (150, 160) to determine the position and orientation of the second end of the longitudinal bar (40, 50, 60) relative to the central strut (70), the pole guide comprising at least one extension pole (150, 160) to enable the side rail to be moved from a reclined position to an upright position by pivoting both of the posts (30, 70) about the lower pivot points (32, 72),

it is characterized in that the preparation method is characterized in that,

at least one of the extension bars (150, 160) is telescopically supported on the longitudinal bar (50, 60) and the side rail comprises an extension post (170), wherein the extension post (170) is connected with the extension bar (150, 160) by a pivot point (155, 165).

2. Medical and/or nursing bed according to claim 1, characterized in that the side underrun comprises at least two longitudinal bars (40, 50, 60).

3. A hospital and/or care bed according to claim 1, characterized in that the extension strut (170) of the side underrun protection can be arranged directly adjacent to the central strut (70), can pivot together with the central strut (70) during the movement of the side underrun protection from the reclined position to the upright position, and can move relative to the central strut (70) when the side underrun protection is in its upright position.

4. A hospital and/or care bed according to claim 3, characterized in that the extension bar (140, 150, 160) is pivotably connected to the extension strut (170), and that the extension bar (140, 150, 160) can be moved relative to the central strut (70) by means of a guide to enable the function of a side barrier between the central strut (70) and the extension strut (170) in the state in which the extension strut (170) is at a distance from the central strut (70).

5. A hospital and/or care bed according to claim 4, characterized in that the guide is a slide.

6. Medical and/or nursing bed according to claim 4, characterized in that the extension bars (150, 160) are assigned to at least one of the longitudinal bars (50, 60) and that at least one of the extension bars (150, 160) assumes the function of guiding the assigned longitudinal bar in relation to the central column (70).

7. Medical and/or nursing bed according to claim 4 or 6, characterized in that the extension bars (140, 150, 160) are assigned to at least one of the longitudinal bars (40, 50, 60) and one or more of the longitudinal bars at least partially encase the relevant extension bar and/or one or more of the extension bars at least partially encase the relevant longitudinal bar.

8. A hospital and/or care bed according to claim 7, characterized in that the extension bar is assigned to each of the longitudinal bars.

9. A hospital and/or care bed according to claim 1, characterized in that the side underrun comprises at least one attachment, the extension rod being supported relative to the central column (70) and being arranged to position the second end of one of the longitudinal rods (50, 60) relative to the central column by means of a slide.

10. The hospital and/or care bed according to claim 9, characterized in that the side barriers comprise extension bars (150, 160).

11. Hospital and/or care bed according to claim 1, characterized in that in the lying down state of the side underrun protection all the longitudinal bars (40, 50, 60) and all the struts (30, 70, 170) are substantially parallel to the plane of the bed frame.

12. Medical and/or nursing bed according to claim 1, characterized in that in the lying position of the railing, the upper longitudinal bar (40) and/or the upper extension bar (140) are provided with gripping areas (49, 149) which can be at least partially enclosed by the user's hand.

13. Medical and/or nursing bed according to claim 1, characterized in that when the side underrun protection is pivoted from the lying position to the upright position, the central column (70) is pivoted by a first bearing about a first axis of rotation (72) and the extension column (170) is pivoted by a second bearing about a second axis of rotation (172), and the two axes of rotation (72, 172) are arranged coaxially.

14. Medical and/or nursing bed according to claim 4, characterized in that the extension bar (140 ', 150 ', 160 ', 140 ", 150", 160 ") is telescopic.

15. A hospital and/or care bed according to claim 1, characterized in that locking means are provided to keep the side underrun protection in a locked position when it is in its upright and/or extended position.

16. Medical and/or nursing bed according to claim 15, characterized in that no connecting means are provided between the side underrun and the head or foot ends (5, 6).

17. A side underrun protection for attachment to a hospital and/or care bed, wherein the side underrun protection comprises an outer strut (30) and a central strut (70), each of the outer strut and the central strut comprising a lower pivot point (32, 72) for pivotable support on a guide (20) attachable to a bed, wherein the side underrun protection further comprises at least one longitudinal bar, each of which is pivotably supported at a first end on the outer strut (30) and is provided at a second end with a bar guide (150, 160) for determining the position and orientation of the second end relative to the central strut (70),

whereby the side underrun protection can be brought from the recumbent position into the upright position by means of the two struts (30, 70) pivoting about the lower pivot point, wherein the rod guide (150, 160) comprises at least one extension rod (150, 160), and, characterized in that,

the side underrun protection comprises the features of the characterizing part of any of claims 1-16, at least one of the extension rods (150, 160) being supported in a telescopic manner on the longitudinal rod (50, 60).

18. Side underrun for attachment to a hospital and/or care bed according to claim 17, characterized in that it comprises at least two longitudinal bars (40, 50, 60).