EP2308442B1 - Hospital and care bed with anti-tip element - Google Patents

Description

The invention relates to a hospital bed according to the preamble of claim 1.

Hospitals and care beds often have to be moved within the hospital or care area, with movements having and without a person on the bed.

This raises the problem for the nursing staff, that due to the high weight of the bed, connected with narrow aisles and doors, a maneuvering is often complicated and difficult to initiate without difficulty. Known for such transport tasks are so-called stretcher, which are very light and narrow couches, which are intended exclusively for transport tasks and not used as a substitute for a hospital and / or nursing bed. In many cases, as v. A. There are often no stretchers in the nursing area and stretchers also have the disadvantage that a person must be reburied with them for transport.

DE 3 805 431 A1 shows a bed for nursing with Abstützarmen to prevent tilting of the lounger.

Object of the present invention is to improve the sliding properties of a hospital and / or care bed and thereby especially changing the sliding direction and so for better maneuverability in a confined space, such as narrow aisles or door openings to optimize.

This object is achieved by the hospital and / or nursing bed according to claim 1.

According to the invention, a hospital and / or nursing bed is provided with a base frame and four main wheels located on the base frame and an upper frame with a head and foot part, wherein on a front side of the underframe, a support element is provided, which at a tilting of the bed triggering weight load on the head or foot in contact with a substantially flat surface can be brought and so the tilting movement of the bed to a tilt angle of max. 3 °, preferably max. 1.5 ° is limited. The named Front side corresponds to the head and / or foot side of the bed. Since the bed thus has a support element on at least one end face, which already comes into contact with the floor during small tilting movements, it becomes possible to reduce the center distance of the wheels and this results in better maneuverability when pushing the bed with changes of direction. And the reduction of the tilting safety normally associated with reducing the center distance is eliminated by the support element, since it comes into contact with the ground immediately upon the onset of tilting. This surface is the floor or floor surface on which the bed with its main wheels stands. A tilt angle of max. 3 ° has the advantage that the support element is located above the ground during normal pushing and practically never touches when there is uneven ground. The smaller angle of max. 1.5 ° has the advantage that when tilting for a correspondingly small tilt angle, the support element touches down, which is felt by the person in bed pleasant.

Preferably, the support element comprises at least one support wheel. Also, the support member may comprise two support wheels and it may be provided on each end side of the bed depending on a corresponding support member. If the ground is not perfectly flat and e.g. when a door threshold, a ground contact of the support element occurs, so a support wheel ensures that the forward movement of the bed is braked as little as possible. Alternatively, the support element can also be designed as a skid.

In a further preferred embodiment, the support element is adjustable in its horizontal distance from the base frame. This adjustability is particularly advantageous when a person wants to leave the bed at the foot, since in this case the support element moves in the vicinity of the base, so can be retracted. In this case, namely, the anti-tip function is not needed and for the person, the free area for leaving the bed is increased accordingly.

Further, a holding means may be provided, through which the support element can be latched in a position remote from the base frame and thus extended. When pushing the bed is permanently to ensure that the support element is extended and remains and in particular the case is to be avoided that pointing with the support elements in the direction of travel is driven against an obstacle, which can retract the support element against the undercarriage via corresponding forces and Subsequently, due to the reduced tilting safety, the bed tilts around this resistance point as a pivot point.

The upper frame has a lower leg rest, which is at least partially pivotable below the upper frame and also a control is provided by the at the pivoting of the lower leg rest, the support member can be brought from an extended to a retracted position. Preferably, the term "during pivoting" is to be understood as being simultaneous, that is, in particular, pivoting is a long-lasting movement, and during a part of this movement, the support element is retracted. But the term "during pivoting" should also include, in particular, that a direct, preferably immediate, temporal or functional sequence is meant in the sense that first retracted by the control of the support element and then the lower leg rest is pivoted.

On the one hand, it can be designed as an electrical or electronic control, which activates an actuator for extending and retracting the support element, such as in particular a linear drive, electric drive, a hydraulic or pneumatic control and further causes the electrical or electronic control via a further actuator or drive and the pivoting of the lower leg rest. Such electrical or electronic control can easily synchronize the corresponding movements via a corresponding programming.

Also, the control can be realized as the interaction of the contact of corresponding contact surfaces. In this case, a contact surface and on the support element, a further contact surface is provided on the lower leg rest, and via a contact of the contact surfaces and corresponding force transmission is a Abschwenkbewegung the lower leg rest coupled to the support element and thus the retraction of the support element is effected. In each case, a sliding surface or a contact point can be provided on the coupling region. The direct contact defines the corresponding movements and their sequence in a simple way. Also, the sequence of movements is reversible in the sense that a pivoting of the lower leg rest in its horizontal position causes an extension of the support element.

Furthermore, the control can be realized by a coupling element. Here are at the lower leg restraint a first crosspoint and provided on the support member, a second crosspoint and a coupling element is coupled to these crosspoints, so that the pivotal movement of the lower leg rest is transferred via the coupling element on the support element and so the retraction or extension of the support member is effected , This coupling element may be a simple coupling rod which is mounted as a tensile or compressive element at two bearing points - ie the above crosspoints - each on the lower leg rest and the support element and so transmits the movement of the lower leg rest to the support element. The coupling element may also be a Zugseil- and / or Bowden cable control or a toothed gear. Also, the coupling element may be a hydraulic control, in the sense that, for example, the drive of the lower leg rest includes a hydraulic pump, which over Hydraulic fluid transmits the drive energy and thus causes the coupling. The aforementioned crosspoints can also be provided directly on the drive.

Further, it is provided in the control that the retraction movement of the support member is activated only when the positional locking of the holding means is released in the extended position of the support member.

Another embodiment describes a hospital and / or nursing bed with a base frame and an upper frame, which serves as a support for a backrest, a thigh rest and a lower leg rest, wherein the lower leg rest has a guide member and a displaceable against the guide part telescopic part, wherein the lower leg rest in a deviated position approximately perpendicular to a flat bottom surface, which is defined by the ground contact surface of the main wheels, can be set up. Here, in the pivoted-down position of the lower leg rest, lowering the upper frame against the lower frame causes displacement of the telescopic part against the guide part. The term in "approximately vertical" describes a basically vertical orientation, which corresponds to a pivoting of the lower leg rest by 90 ° from the horizontal normal orientation. In this case, angle deviations of 90 ° +/- 20 °, preferably 90 ° +/- 10 ° are included. In particular, it is important that the angle is sufficiently large to realize a tilt-free displacement. The double function of bed lowering described with the pushing together of the lower leg rest means that a separate drive can be saved. Due to the pivoting of the footrest, the total length of the bed is reduced, which serves according to the defined task for improving the maneuverability of the bed. Also, the bed in the situation thus created - similar to a wheelchair - move.

In particular, the bed comprises a mattress, which is fixed to the guide part and / or the thigh rest and is compressed when moving from the guide to the telescopic part in an inserted position and relative to the telescopic part causes restoring forces, which are directed against this insertion. This ensures in a simple way that the lower leg rest always tends to extend.

In a first variant, when lowering the upper frame, the telescopic part can come into contact with the floor surface and the insertion can be caused by supporting the telescopic part against the floor surface. In a second variant, when lowering the upper frame, a part of the telescopic part can come into contact with the underframe and the retraction can be caused by supporting the telescopic part against the underframe. The subject of the undercarriage is hereby defined broadly and also includes attachments to the same. The first Variant describes the simplest case of lowering. If a certain small distance from the floor surface is always to be maintained to protect against possible soiling of the mattress through the floor, this can be achieved by the second variant.

Preferably, the foot part is removable from the bed and the upper frame has movable holding arms for holding the foot part, further comprising handles which can be brought into an elevated position and suitable, in the pivoted-down position of the lower leg rest of a seated on the thigh rest person getting up to ease the bed. The foot part is seen as the vertically oriented boundary plate at the foot of the bed and the removal of the area of the pivoted lower leg rest is released on the one person standing up can leave the bed. "Removable" denotes on the one hand a manual removal, on the other hand can be brought by a pivoting and / or sliding movement of the foot part in a separate position and thereby be converted in particular in the horizontal plate of a table.

A corresponding, unclaimed, method for operating a hospital and / or nursing bed with a top and bottom frame, which has a lower leg rest with a telescopic part and a guide part, has a first step of moving the lower leg rest in an approximately vertical orientation and a second step of lowering a top frame against a base. The second step causes insertion of the telescopic part against the guide part.

Fig. 1

mit ebener Liegefläche,

Fig. 2

mit aufgerichteter Rückenlehne in der ersten aufgerichteten Position,

Fig. 3

mit einer hochgeschwenkten Oberschenkellehne,

Fig. 4

mit teilabgeschwenkter Unterschenkellehne,

Fig. 5

mit abgeschwenkter Unterschenkellehne und eingefahrenem Stützelement,

Fig. 6

in der komplett abgesenkten Position,

Fig. 7

mit Rückenlehne in der zweiten aufgerichteten Position,

Fig. 8

mit Anstellung des Obergestells,

Fig. 9

ein Detail der Rückenlehne und deren Antrieb und

Fig. 10

ein Detail des Stützelements.

Subsequently, a preferred embodiment will be explained with reference to figures. The figures show a hospital bed according to:

Fig. 1

with a flat lying surface,

Fig. 2

with upright backrest in the first upright position,

Fig. 3

with a raised thigh rest,

Fig. 4

with partly lowered lower leg rest,

Fig. 5

with pivoted lower leg rest and retracted support element,

Fig. 6

in the fully lowered position,

Fig. 7

with backrest in the second erected position,

Fig. 8

with employment of the upper frame,

Fig. 9

a detail of the backrest and its drive and

Fig. 10

a detail of the support element.

In Fig. 1 is a hospital and / or nursing bed shown with a base 10 and an upper frame 40, which via two linear actuators 19a, 19b, such. B. electric thrust spindle or hydraulic drives can be raised and lowered and also brought into inclinations. The underframe 10 comprises four main wheels 12, with which the bed can be pushed and wherein the main wheels 12 due to a wheel brake (not shown) can be secured against roll over actuation of the brake lever 14. In a release position of the brake lever 14, the associated wheel, or the associated wheels, released and so the bed can be rolled and in a braking position, a braking force is exerted on the wheel.

Fig. 10 shows a retaining hook 15, which is in the release position in engagement with the support member 20 and thus prevents retraction of the support member. If the bed is to be rolled, so the support member 20 can not retract unintentionally. Retraction is defined as reducing the distance of the sliding or rolling surface of the support member against the main wheels 12. In the braking position, the retaining hook 15 is retracted so that the support member can be retracted.

On the upper frame is normally a mattress (not shown), which lies on the backrest 80, the seat part 72, the thigh rest 70 and the lower leg rest 44. The seat portion 72 is fixedly connected to the upper frame 40 and the seat portion 72 or adjacent thereto are bearing points 71, 86d, over which the thigh rest 70 and the backrest 80 are stored.

Fig. 3 shows that bearing points 47, the lower leg rest 44 is pivotable against the thigh rest 70 and is driven by the drive 48. Drive 48 is mounted in the thigh bar 70. The thigh rest 70 is driven by a drive, not shown, which is mounted in the upper frame.

The backrest 80 is, according to Fig. 8 or 9 , mounted on a backrest 88b, 88c against a backrest support 82. The backrest support 82 in turn is mounted on the upper frame 40 via a linkage 86c, 86b. These mentioned linkages are each designed as a four-link coupling gear. In a four-link coupling gear four coupling elements in pairs in bearing points, which have the one degree of freedom of rotation, against each other. Of the coupling elements usually one element is driven, and this can bring all four coupling elements in the desired location and angular position. But it can also be realized a manual drive. The backrest support is designed as a stable frame.

The lower edge of the support member 20 is opposite to the plane which is described by the lower edges of the main wheels 12 and corresponds to a flat floor by a small amount offset from 7 mm upwards. That is, in the normal case, the support element has no contact with the floor. Since the travel of the support member is about 210 mm, it comes arithmetically at a weight load at the foot end of the bed to a tilt around the foot-end main wheels and a corresponding ground contact at a tilt angle of about 2 °. Due to the bed-internal elasticities it comes straight or possibly just not at a lifting of the head end-side main wheels at this tilt angle.

When pushing a bed, there is often the problem that the large weight of the bed (possibly with the patient) makes it difficult to change direction. Since the torque of the resistance of the change of direction results from the product of the resistance forces at the wheels with the lever to the axis of rotation of the direction change, it is advantageous to reduce this lever length by shorter center distances of the main wheels. The concomitant reduction in tipping stability is compensated by the support elements. Thus, in a normal sliding of the bed, the support elements have a certain ground clearance, they do not hinder the roll and direction change properties of the bed. Due to the support element, it becomes possible to adjust the center distance A ( Figure 3 ) of the main wheels to reduce. While in known designs a center distance of 1100 - 1300 mm are common, so the center distance can be reduced due to the support wheels to 920 mm.

A further advantage results from the folding function of the lower leg rest: in order to realize as simple as possible lying down and getting up from the bed, the largest possible free area at the foot can be created. Since usually a relatively large center distance of the main wheels is selected to ensure the stability of the bed, a good tilting security can be realized when pushing the bed by an extended support element and created after retraction of the support member, a large free area at the foot.

In the present case, the support element comprises two wheels whose running direction runs in the longitudinal direction of the bed, that is to say a main sliding direction. Unlike the main wheels 12, there is no freedom in aligning the running direction about a vertical axis with the support member. Alternatively, the support member may also have only a wheel or a skid. In the case of several wheels or sliding elements of the support element, these can be connected to one unit so as to be non-rotating via two guide sleeves with two gas pressure springs 16.

An example of a typical sequence of the different drive means of the bed to illustrate its different functions.

In a first step , the bed, in particular the upper frame 40 is moved via the frame drives 19a, 19b in a middle and horizontal height. This altitude is important only for the subsequent fifth step and does not have to be performed first.

In a second step , the backrest 80 is erected, as in the transition from Fig. 1 to Fig.2 is shown. In this case, the second drive 88a is not used or driven, so that the backrest support 82 remains stationary relative to the backrest 80.

The linear drive of the erector 86a is extended and acts on the backrest support 82 and ensures its erection movement. The erecting means 86 causes a rotational pivoting movement of the backrest about the first pivot axis P1. This is approximately in the area of the lumbar vertebra of a person who is on the bed. As a result, ergonomically the natural erection of the person can be modeled, as well as the upper body of a person when erecting would perform a pivoting movement about this axis.

For example, if the backrest were supported against it by a single pivot point at the level of the upper frame, a point K adjacent to the patient's back (separated by a mattress) would be displaced very far towards the foot end when erected. As a result, the person would be pushed forward and pressed in the lower stomach area. This is prevented by the described pivoting. In this case, the position of the first pivot axis P1 does not have to remain constant over the course of the erection process in the first erected position, but may change its position, depending on the design of the linkage 86b, 86c. Advantageously, he always remains above a mattress, which is located on the bed, preferably at least 10 cm above the mattress. This erection process is completed when the erector has reached an end position. The backrest is then in the first upright position and has an angle of about 70 ° +/- 5 °. The movement about the first pivot axis P1 appears to a person in bed as if the backrest were turning about a point which is at the height of the upper frame and at the same time this point would be displaced towards the head end of the bed.

During or before the erection process of the second step, a step 2a may be performed, in which the thigh rest 70 can be brought into an elevated position by a corresponding drive, not shown (automatically or manually). In Fig. 3 the thigh rest was raised accordingly. The angle of elevation can be 10 - 15 °. This will prevent the person from being forced into the first upright position, the foot of the bed, during the second step by raising the backrest 80. The body of the person is thus after the implementation of step 2a in a kind of depression between the raised thigh rest 70 and the seat back 80. Once the seat back is raised to the first erected position, the thigh rest 70 may be lowered back to a horizontal position.

Subsequently, in a third movement step, the lower leg rest 44 as in Fig. 4 shown partially swung by an angle of about 60 ° until a contact between the lower leg rest 44 and the support member 20 is made. Since a mattress located on the bed at the foot of the lower leg rest 44, more precisely on the telescopic part 46 (as will be explained later) is fixed, the mattress follows the Abschwenkbewegung the lower leg rest 44th

At the latest at this time, the fourth step must be performed, in which by turning the brake lever 14 in the locking position of the main wheels of the retaining hooks 15 (see Fig. 10 ) is moved out of the region of the support member 20 and so the support member can retract against the base 10. The blocking position of the brake lever 14 is therefore a prerequisite for initiation of the pivoting of the lower leg rest. This fourth step can also be arbitrarily preferred. Also, the foot part 50 of the bed must be removed. This is fastened with two retaining arms 52 on the upper frame 40 and its preferably manual removal (see the difference of Fig. 1 to Fig. 5 ) can be seen as part of the fourth step.

According to Fig. 5 the fifth movement step is explained. Here, the lower leg rest 44 is further pivoted in the same direction in an approximately vertical position and there is permanent contact with the support member 20, which moves by the contact forces in the direction of the undercarriage 10. The drive 48 of the lower leg rest 44 thus has a dual function, ie the angular adjustment of the lower leg rest 44 and the retraction of the support member 20. The retraction movement is performed against the biasing force of a gas spring 16, which presses the support member in its extended position. Preferably, two gas springs are used, which are aligned in parallel and so cause a torsional rigidity of the support member 20 against the base frame. It has been explained above that the upper frame 40 must be lowered or raised to a horizontal and mid-height position prior to the execution of this step. A defined position of the upper frame, such as the horizontal central position is necessary so that the contact of the contact surface of the thigh rest 44 with a contact surface of the support member 20 defines exactly and thus its retraction can be initiated. After completion of the fifth movement step, the lower leg rest is oriented substantially perpendicularly (ie an angle of 90 ° +/- 15 °, preferably 90 ° +/- 5 ° to the horizontal) and preferably exists certain vertical distance from the lower edge of the pivoted lower leg rest to the surface of a flat floor.

Since the movement of the lower leg rest is a pivoting movement which causes a linear movement of the support element, a certain slip can be used at the point of contact and a torque of the support element downwards (toward the floor) due to the sliding / friction forces. To avoid this sliding, the thigh rest can be swung up by a compensating angle when swinging the lower leg rest.

Now, in a sixth movement step, the upper frame can be lowered via the frame drives 19a, 19b. The frame drives 19a, 19b can be designed as linear drives or as a scissors gear as shown. In a scissors gear, a drive linkage can be mounted via a pivot bearing in the base frame and in the upper frame in a horizontal longitudinal slot via a slider and by a pivoting drive of the drive linkage and corresponding sliding of the slider, the height of the upper frame is varied.

During the lowering movement, a ground contact from the lower leg rest 44 to the floor occurs. Since the lower leg rest is multi-part and has a telescopic part 46 and a guide part 45, then the latter parts can be moved against each other, so that the height of the pivoted lower leg rest (ie in the vertical direction) is reduced. The term "move" is to be understood broadly and refers in particular to a movement of bringing each other closer to each other. At the lower leg rest and / or the thigh rest, the mattress is e.g. fastened with a tension belt. The mattress is executed in its foot part, so the area which rests on the lower leg rest, especially in their longitudinal direction particularly elastically compressible, so that they can follow the collapsing movement of the lower leg rest.

In a seventh step - see the transition from Fig. 6 to Fig. 7 the backrest 80 can be pushed out in the direction of the foot end of the bed, which is defined as the transition from the first erected position to the second erected position and wherein a person in bed is pushed to the foot or at least supports a corresponding own movement of the person becomes. In this case, the contact point K of the backrest performs a horizontal movement of about 100 mm in the foot direction and this point K is simultaneously moved by about 140 mm upwards. The mattress (not shown) is secured at its head end with the backrest and by this attachment is in accordance with the vertical movement of the mattress in the region of the back of the person with lifted. This attachment can as Be carried bag, which extends to the mattress base over the width of the mattress, and the foot end has an opening into which the upper end of the backrest can be inserted.

By lifting, a sliding movement of the person along the mattress is supported forward. The mattress in the buttocks area of the person has a falling to the foot of the bed slant. A Vorschiebebewegung without simultaneous elevation of the mattress in the back part would indeed perceived by the person as rather unpleasant.

The movement of this seventh step does not have to be done in this order, but can be arbitrary, e.g. following the second step of erecting the backrest in the first erected position or thereafter.

In an eighth step, which is preferably carried out manually, the holding arms 52 are brought by opening a bolt 53 pivoting about a pivot point on the upper frame in an approximately 80 ° almost upright position. On the support arms 52 are handles 54, where the person can hold on standing up and getting up.

Also, several of the aforementioned steps can be performed simultaneously. Thus, in particular, the pivoting of the lower leg rest 44 can be carried out simultaneously with the movement of the backrest into the second erected position (seventh step). A combination of these steps is advantageous because one or more drives can be saved. Thus, for example, the linear drive 48, which is responsible for driving the lower leg rest, be connected via a Bowden cable, a cable, a linkage, a hydraulic coupling or a coupling gear with the guide means 88b, 88c or the backrest 80 so that on this Drive the pivoting of the lower leg rest combined with the second erection can be performed combined.

Now the bed is according to Fig. 7 in a position in which it has been converted into a kind of armchair, although mentally the mattress not shown must be supplemented. The seat is in the lowest possible position, so as to allow the patient to get up. As part of occupational therapy, the person can practice getting up, with or without the assistance of the nursing staff.

In an optional ninth step , the bed can be tilted about the horizontal transverse axis by at least partially extending the bedside frame drive 19a, thus lifting the head end. If now additionally the footing-sided Rack drive 19b is extended so increases the seat and the person is practically automatically placed in a standing position.

On the longitudinal sides of the bed, a side rail 90 is arranged, which is in the figures in the folded position. It comprises two spars, which can be pivoted vertically erect and struts 92, which are parallel displaceable along guides of the erected uprights upwards, can engage in an upper position, thus creating a falling out of the person preventing side rails.

It was explained that some steps can only be performed before or after other steps. A control of the individual drives ensures that no impermissible sequence of movements can be performed. In this case, a plurality of sensors or limit switches is used, which in each case deliver a signal to the controller after reaching an end position, as a result of which the corresponding drive is stopped. Also, a sensor or state sensor is provided on the brake lever 14, which detects whether the bed is in the braking or release position, since - as explained above - the support member 20 is released only in the braking position of the main wheels in its retraction movement. The drive 48 of the lower leg rest for pivoting into a vertical position is thus activated only in the aforementioned braking position.

The same applies to the reverse movement. The steps can be reversed accordingly.

In order to avoid rubbing or scratching of the telescopic part 46 over the floor, the controller allows only a pivoting of the lower leg support when the upper frame has been sufficiently raised and thus a distance to the floor has been reached. While the telescopic part 46 has been inserted relative to the guide part 45 due to the floor contact, gravity firstly, secondly the spring forces received in the compressed mattress and / or thirdly a compression spring (not shown) accommodated in the telescopic part 46 or guide part 45 to move the parts mentioned apart.

Features of different embodiments can be freely combined with each other. Also, movements are reversible, in the sense that not necessarily a drive of the lower leg rest causes a retraction and extension of the support member, but that alternatively a drive of the support element causes a pivoting in and out of the lower leg rest. The same applies accordingly to the drive of the backrest, which in a combined way the Drive the lower leg rest and can optionally be provided in the area of the backrest or the lower leg rest.

Claims (13)

1. Hospital and/or care bed, comprising a lower frame (10) and four main wheels (12) located on the lower frame and an upper frame (40) comprising a head part (60) and a foot part (50), a support element (20) being provided at a front end of the lower frame (10), which support element can be brought into contact with a substantially planar ground surface in the case of weight loading on the head part (60) or foot part (50) triggering tilting of the bed, and the tilting movement of the bed thus being limited to a tilt angle of at most 3°, preferably at most 1.5°, the upper frame (40) comprising a lower-leg rest (44), which can be pivoted under the upper frame (40) at least in part, and a control means by which the support element (20) can be brought from an extended position into a retracted position in the event of this pivoting, characterised in that, in the case of the control means, it is provided that the retraction movement of the support element (20) can be activated only when a position locking means (15) of the support element is released.
2. Hospital and/or care bed according to claim 1, characterised in that the support element (20) comprises at least one support wheel.
3. Hospital and/or care bed according to either of the preceding claims, characterised in that the support element (20) can be adjusted in terms of the horizontal distance thereof from the lower frame.
4. Hospital and/or care bed according to claim 3, characterised in that holding means are provided, by which the support element (20) can be locked in a position which is remote from the lower frame (10) and is thus an extended position.
5. Hospital and/or care bed according to any of the preceding claims, characterised in that an actuator for retracting and extending the support element (20) is provided and the control means is designed as an electric or electronic control means, by which the pivoting of the lower-leg rest (44) and the actuator can be activated.
6. Hospital and/or care bed according to any of the preceding claims, characterised in that a contact surface on the lower-leg rest (44) and a further contact surface on the support element (20) are provided, and in that, via touching of the contact surfaces, a downward pivoting movement of the lower-leg rest (44) can be coupled to the support element (20), so as thus to bring about the retraction of the support element.
7. Hospital and/or care bed according to any of the preceding claims, characterised in that a first coupling point on the lower-leg rest (44) and a second coupling point on the support element (20) are provided, a coupling element is coupled to these coupling points such that the pivoting movement of the lower-leg rest (44) is thus transferred to the support element (20) via the coupling element, and thus the retraction or extension of the support element is brought about.
8. Hospital and/or care bed according to any of the preceding claims, the upper frame (40) serving as a carrier for a back rest (80), an upper-leg rest (70) and a lower-leg rest (44), the lower-leg rest comprising a guide part (45) and a telescopic part (46) which can be displaced towards the guide part (45), and it being possible to arrange the lower-leg rest (44) in a pivoted-down position approximately perpendicular to a planar floor surface which is defined by the floor contact surface of the main wheels, characterised in that, when the lower-leg rest (44) is in the pivoted-down position, a lowering of the upper frame (40) towards the lower frame (10) brings about a displacement of the telescopic part (46) towards the guide part (45).
9. Hospital and/or care bed according to claim 8, characterised in that the bed comprises a mattress which is fixed to the guide part (45) and/or the upper-leg rest (70) and is compressed in the event of the displacement of guide part to telescopic part into a inserted position and, in relation to the telescopic part (46), brings about restoring forces which are directed against this insertion.
10. Hospital and/or care bed according to either claim 8 or claim 9, characterised in that, when the upper frame (40) is lowered, the telescopic part (46) comes into contact with the floor surface and the insertion is caused by the telescopic part (46) being supported against the floor surface.
11. Hospital and/or care bed according to any of claims 8-10, characterised in that, when the upper frame (40) is lowered, part of the telescopic part (46) comes into contact with the lower frame (10) and the retraction is caused by the telescopic part (46) being supported against the lower frame (10).
12. Hospital and/or care bed according to any of the preceding claims, characterised in that the foot part can be distanced from the bed and movable holding arms (52) for holding the foot part (50) are provided on the upper frame (40) and further comprise handles (54) which can be brought into an elevated position and are suited to making it easier for a person sitting on the upper-leg rest (70) to get up from the bed when the lower-leg rest (44) is in the pivoted-down position.
13. Hospital and/or care bed according to any of the preceding claims, characterised in that the support element (20) can be retracted and extended via a linear movement.

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