AU2017201314A1 - A Bed - Google Patents

Abstract

The invention relates to bed, such as a care bed, comprising an actuation system for moving different parts of the bed deck to different positions, and also comprising a control system for controlling the actuation system. The control system comprises a user input configured to cause the 5 actuation system to raise one or more parts of the bed deck to an angle of about 300 with respect to the bed frame or with respect to horizontal. 320 330 340 - - - - - -- - -- - - - - - - - -6 10 Figure 1

Description

A BED

TECHNICAL FIELD

The present Invention relates to a bed, such as a hospital bed or nursing care bed, comprising a position control system configured to position the back rest and/or leg rest of the bed at an angle of about 30° to the bed frame.

BACKGROUND OF THE INVENTION

It is important for patient's in hospital beds and nursing care beds to be as comfortable as possible. The comfort experienced by a patient may depend on the position of his or her body on the bed. It is also important, particularly for patients that spend long periods of time in bed, to minimise pressure points on the patient’s body that may cause bed sores. For this reason, the decks of these beds are commonly configured as separate parts that are able to move at angles relative to each other. One such configuration is for a bed deck to comprise a back rest, a seat rest, an upper leg rest; and a lower leg rest. Frequently, the beds are configured to allow the back rest to be raised at an angle relative to the bed frame. This is particularly useful if the patient has breathing problems or is eating or drinking.

It is known, that pressure points may be minimised by placing the patient In a position between and including a straight/neutra! position (in which the bed deck is relatively flat) and a 30°/30° position. In a 30°/30° position, the back rest is at an angle of about 30° to the seat rest or bed frame, and the upper leg rest Is aiso at about 30° to the seat rest or bed frame. Pressure between the patient and bed is known to increase at various points on the patient’s body if the back rest and/or upper leg rest are positioned at an angle greater than 30* to the horizontal. Therefore, it Is preferable to avoid these positions. Consequently, a caregiver may alter the position of the bed deck to raise the back rest to an angle that the caregiver deems to be less than or equal to about 30° to horizontal. Some beds allow for a controller to raise the back rest at an angle and to pause movement of the back rest temporarily when the back rest reaches an angle of about 30° with the horizontal. This heips the caregiver to select the 30° position for the back rest by stopping movement of the back rest at the pause. The caregiver may then raise the upper leg rest to an angle that the caregiver deems to be less than or equal to about 30° with the horizontal. However, this process is slow and is dependent on the caregiver’s judgment of whether the upper leg rest is at the correct angle or not. There is a risk that the caregiver’s judgment may be incorrect.

It is therefore an object of the present Invention to provide a bed that overcomes at least some of the disadvantages of the prior art or that at least provides the public with a useful choice.

SUMMARY OF THE INVENTION

In a first aspect, the invention provides a bed comprising: a frame supporting a bed deck comprising a back rest, a lower leg rest, and an upper leg rest located between the back rest and lower leg rest; an actuation system configured to move the back rest or upper ieg rest or both between a neutral position substantially parallel with the frame and an angled position relative to the frame; and a control system comprising a first user input and a controller, wherein the user input is configured to send a signal to the controller when activated, and upon receiving the signal from the user input, the controller activates the actuation system to move the back rest, or upper leg rest, or to simultaneously move both the back rest and upper leg rest, to an angle of between about 0° and 30° with respect to the bed frame.

In a second aspect, the Invention provides a bed comprising: a frame supporting a bed deck comprising a back rest, a lower leg rest, and an upper leg rest located between the back rest and lower leg rest; an actuation system configured to move the back rest or upper leg rest or both between a neutral position substantially parallel with the frame and an angled position relative to the frame; and a control system comprising a first user input and a controller, wherein the user Input is configured to send a signal to the controller when activated, and upon receiving the signal from the user input, the controller activates the actuation system to move the back rest, or upper leg rest, or to simultaneously move both the back rest and upper leg rest, to an angle of about 30° with respect to the bed frame and to stop movement of the back rest when the back rest, or upper leg rest, or both (as the case may be) reaches about 30°.

Iri a third aspect, the invention provides a bed comprising: a frame supporting a bed deck comprising a back rest, a lower leg rest, and an upper leg rest located between the back rest and lower leg rest; an actuation system configured to move the back rest or upper leg rest or both between a neutral position substantially parallel with the frame and an angled position relative to the frame; and a control system comprising a first user input and a controller, wherein the user input is configured to send a signal to the controller when activated, and upon receiving the signal from the user input, the controller activates the actuation system to move the back rest, or upper leg rest, or to simultaneously move both the back rest and upper leg rest, to an angle of between about 0° and 30° with respect to horizontal. in a fourth aspect, the invention provides a bed comprising: a frame supporting a bed deck comprising a back rest, a lower leg rest, and an upper ieg rest located between the back rest and lower leg rest; an actuation system configured to move the back rest or upper leg rest or both between a neutral position substantially parallel with the frame and an angled position relative to the frame; and a control system comprising a first user input and a controller, wherein the user input is configured to send a signal to the controller when activated, and upon receiving the signal from the user input, the controller activates the actuation system to move the back rest, or upper leg rest, or to simultaneously move both the back rest and upper leg rest, to an angle of about 30° with respect to horizontal and to stop movement of the back rest when the back rest, or upper leg rest, or both (as the case may be) reaches about 30°.

Preferably, the bed of the invention comprises a second user Input and the controller is configured to activate the actuation system to simultaneously move the back rest and upper leg rest to the neutral position upon receiving a signal from the second user input.

Optionally, the bed deck comprises a seat rest located between the back rest and the upper leg rest.

In one form, the actuation system comprises a first actuator to move the back rest.

Preferably the actuation system comprises a second actuator to move the upper leg rest. Optionally, the first and second actuators are linear actuators comprising a first end connected to the bed frame and a second end connected to the back rest and upper leg rest respectively.

In one form, the user input comprises a button, switch, or lever.

Preferably, the control system causes the actuation system to stop moving the back rest, upper leg rest, or both once contact between the user and user input is broken so that the user input is no longer activated.

Optionally the user input comprises a touch sensitive switch and wherein the controller activates the actuation system to move the back rest, upper leg rest, or both upon receiving a signal when the switch is touched until such time as contact is removed from the switch or until the back rest, upper leg rest, or both adopt(s) a position of about 30° with respect to the bed frame, whichever occurs first. in one form, the user input comprises a touch sensitive switch and wherein the controller activates the actuation system to move the back rest, upper leg rest, or both upon receiving a signal when the switch is touched until such time as contact is removed from the switch or until the back rest, upper leg rest, or both adopt(s) a position of about 30° with respect to horizontal, whichever occurs first.

Any reference to prior art documents In this specification is not to be considered an admission that such prior art is widely known or forms part of the common general knowledge in the field.

As used in this specification, the words “comprises”, “comprising”, and similar words, are not to be interpreted in an exclusive or exhaustive sense. In other words, they are intended to mean “including, but not limited to”.

As used In this specification, the term “side rail" refers to any safety side, cot side, rail, panel, or other system placed beside a bed to help prevent a person falling out of the bed.

BRIEF DESCRIPTION OF THE FIGURES

Preferred embodiments of the invention will now be described by way of exampie oniy and in relation to the following drawings in which:

Figure 1 is a schematic side view of one form of bed according to the present invention; and

Figure 2 is a schematic side view of another form of bed according to the present invention.

DETAILED DESCRIPTION

Figures 1 and 2 show similar but slightly different forms of beds according to the present invention. Each bed may be particularly suited for use as a care bed, such as a hospital bed or a nursing care bed.

As shown in Fig ures 1 and 2, the bed 100 comprises a frame 200, which is connected to a base, such as a leg base (not shown). The frame is typically positioned to be substantially horizontal with the floor. However, the bed may be configured to allow the frame to be angied upwardly at one end with respect to the floor to form the Trendelenburg or reverse Trendelenburg positions.

The frame 200 supports a deck 300 on which a mattress (not shown) is placed. The deck 300 may comprise two or more parts configured to be angled relative to the frame 200. In one form, the deck 300 comprises a back rest 310, an upper leg rest 330, and a lower leg rest 340. The upper leg rest 330 is located between the back rest 310 and lower leg rest 340. Optionally, the deck 300 also comprises a seat rest 320 located between the back rest 310 and upper leg rest 330. A patient would typically be positioned on a mattress located on the deck 300 so that the patient’s back is supported by the back rest 310, the posterior is supported by the seat rest 320, the thighs are supported by the upper leg rest 330, and the lower legs are supported by the lower leg rest 340.

In a neutral position, the deck parts 310 -- 340 lie in substantially the same plane and may be substantially parallel with the frame 200. For exampie, if the frame 200 is substantially horizontal, the deck parts 310 - 340 will lie substantially flat and will also be substantially horizontal. Conversely, If one end of the frame is raised in the Trendelenburg or reverse Trendelenburg position, a corresponding end of the deck may also be raised while keeping the deck substantially in the flat, neutral position.

The bed further comprises a control system comprising a first user input 400 and a controller 500. The first user input 400 may be any suitable input, such as a button, switch or lever that provides a signal 450 to the controller 500 when the input 400 Is activated. In one form, the first user input 400 may be an electronic button or switch, such as a touch sensitive region, that Is activated to provide a signal 450, such as an electric signal, to the controller 500 when touched or depressed. Other forms of electronic user input and methods of activating the user input may otherwise be used without departing from the invention, such as touch free switches using near sensing technology, for example, which may be activated by simply holding a user’s finger 'within close proximity of the switch. In another form, the first user input 400 may comprise a mechanical button, switch, lever, or the like that creates an electrical connection when activated (such as when depressed or rotated for example) to provide a signal 450 to the controller 500. The signal 450 may be an electric signal that passes along a wired connection between the first user input 400 and the controller 500 or the signal may comprise a wireless signal that is transmitted from the user input 400 and Is received by a receiver connected to or forming part of the controller 500.

Typically, the controller 500 comprises a programmable processor. In preferred forms, the controller 500 comprises a programmable microprocessor.

The bed 100 also comprises an actuation system 600 comprising one or more actuators connected to the deck 300 to move one or more parts of the deck 300 between the neutral position and a raised position, in one form, the bed may be configured so that the actuation system causes one or more parts of the deck to be raised to an angled position relative to the frame 200. In another form, the bed may be configured so that the actuation system causes one or more parts of the deck to be raised to an angled position relative to horizontal, in one form, the controller may be configured to allow a user to select, via a user Input, whether one or more deck parts are raised to an angle relative to the bed frame or to horizontal.

Various examples of the bed of the Invention are described below. For the sake of simplicity, these examples refer to one or more deck parts being raised to an angle of about/approxlmately 30° with respect to the frame. However, it should be appreciated that the coritroiier 500 may otherwise be programmed to raise one or more deck parts to an angle of about/approximateiy 30° to horizontal without departing from the scope of the invention.

By using the term ‘about’ or ‘approximately’ in this specification to discuss an angle, such as a 30° for example, we mean that one or more deck parts can be moved to an angle that is at 30°, or close to 30° (for example, between 25° and 35°), from the bed frame or from the horizontal, as the case may be.

Similarly, the term ‘30° position’ is used in this specification to refer to a position at which one or more deck parts are at 30°, or close to 30° (for example, between 25° and 35°), from the bed frame or from the horizontal, as the case may be.

Furthermore, the term ‘30e/30° position’ is used in this specification to describe a position where the back rest and upper ieg rest both form an angle of about 30° with respect to the bed frame or with respect to horizontal, as the case may be. For example, the back rest and upper ieg rest may each form an angle of 28* to horizontal or the back rest may form an angle of 30° to horizontal and the leg rest may form an angle of 31° to horizontal.

In one form, the actuation system 600 may be configured to move the back rest 310 relative to the frame 200, as shown in Figure 1, or relative to horizontal. In another form, the actuation system 600 may be configured to move the upper leg rest 330 relative to the frame 200 or to horizontal. In yet another form, as shown in Figure 2, the actuation system 600 may be configured to move both the back rest 310 and upper leg rest 330 relative to the frame 200 or to horizontal. In this form, the back rest 310 and upper leg rest 330 may be caused to move simultaneously or separately. For example, the actuation system 600 may comprise a first actuator 610 to move the back rest 310 or to move the upper leg rest 330. In another form, the actuation system 600 may comprise a single actuator configured to move both the back rest 310 and upper leg rest 330. in yet another form, the actuation system may comprise a first actuator 610 to move the back rest 310 and a second actuator 620 to move the upper leg rest 330.

Any suitable actuator may be used to move one or more deck parts relative to the bed frame 200 or to horizontal, in some forms, at ieast one actuator is a linear actuator. For example, in one form, the actuation system 600 comprises first and second actuators 610, 620 and both actuators 610, 620 are linear actuators. The first actuator 610 may comprise a first end connected to the bed frame 200 and a second end connected to the back rest 310. The second actuator 620 may also comprise a first end connected to the bed frame 200 and a second end connected to the upper leg rest 330.

Each actuator may comprise an electric motor that is eiectricaily connected to the controller 500. in another form, both the first and second actuator may be connected to a single electric motor that is In turn electrically connected to the controller 500.

The control system may be configured so that when the controller 500 receives a signal 450 from the first user input 400, the controller 500 activates the actuation system 600 to move the back rest 310, or upper leg rest 330, or both to an angle of about 30° with respect to the bed frame 200 or to horizontal. For example, the control system may be configured so that when the user input is activated by a user to provide a signal to the controller, the controller causes the actuation system to simultaneously move both the back rest 310 and upper leg rest 330 toward the 30°/30° position with respect to the bed frame 200 or to horizontal.

The control system may be configured to activate the actuation system 600 by sending an electric drive signal 550 from the controller 500 to the electric motor(s) of the actuation system via the electrical connection(s) between the motor{s) and controller 500. When the electric motor(s) receive(s) the drive signal 550 from the controller 500, the motor(s) may cause the respective actuator 610, 620 to move the respective deck part(s) 310, 330 until the respective part(s) 310, 330 form an angle of about 30° with the bed frame 200 or ίο horizontal. For example, if the first actuator 610 is a linear actuator which receives a drive signal 550 from the controller 500 to raise the back rest 310 from the neutral position or any other position between about 0° and 30° with the bed frame, the motor for the first actuator 610 rotates In a first direction to cause a drive arm, such as a piston rod, of the first actuator to extend and push against the back rest 310 until the back rest reaches an angle of about 30° with the bed frame 200. In another example, the bed 100 comprises first and second linear actuators 610, 620 respectively connected to the back rest 310 and upper leg rest 330. Where both actuators 610, 620 receive a drive signal 550 from the controller 500 to raise the deck parts 310, 330 from the neutral position or any other position between about 0° and 30° with the bed frame, the motor for each actuator 610, 620 rotates in a first direction to cause a drive arm/piston rod of each of the first and second actuators 610, 620 to extend and simultaneously push against the back rest 310 and upper leg rest 330 respectively until both deck parts 310, 330 reach an angle of about 30° with the bed frame 200. in one form, the linear actuator(s) may comprise a body, an electric motor connected to a spindle comprising an external thread with a known thread pitch, an actuating drive arm, such as a piston rod, comprising a nut with an internal thread matching the thread pitch of the spindle, and a Hall sensor (or any other suitable sensor) to sense rotation of the spindle. The spindle is located inside the nut of the piston rod. Upon receiving a signal from the controller, the electric motor rotates the spindle within the nut, which causes the actuating arm to move linearly relative to the spindle. For each spindle rotation, the piston rod moves the distance of the thread pitch. The sensor monitors the rotation of the spindle and sends feedback to the controller, which is programmed to stop the electric motor after a predetermined number of spindle rotations. The predetermined number of spindle rotations is selected based on the distance that the piston rod must extend to cause the back rest or upper leg rest (as the case may be) to form an angle of about 30* with the bed frame 200.

In another form, the bed may comprise a position sensor that senses the position of the respective deck part(s) 310, 330 relative to the bed frame or to the horizontal and provides feedback to the controller when the sensor senses that the respective deck part(s) 310,330 are at an angle of about 30° with respect to the bed frame 200 or with respect to horizontal, as the case may be.

Iri one form, the bed may be configured so that activation of the first input causes the back rest 310, upper leg rest 330, or both deck parts 310, 330 to move to an angle of about 30° with respect to the frame or horizontal, regardless of the starting position of the respective deck part(s). For example, the controller may be configured to cause the back rest 310 or upper leg rest 330 to move to a position at an angle of about 30° with respect to the frame whether the back rest or upper leg rest is in the neutral position or at any angle below about 30° or above about 30° with respect to the frame. The controller 500 may be configured to move the deck parts 310, 330 separately or simultaneously. For example, the back rest 310 may be at about 90° to the frame and the upper leg rest 330 may be in the neutral position. Upon activation of the first user input 400, the controller may cause the actuation system 600 to simultaneously lower the back rest to about 30° and to raise the upper leg rest 330 to about 30° to form the 30°/30° position with respect to the bed frame 200. In this form, separate actuators may be required to operate the back rest 310 and upper leg rest 330. The same linear actuators as described above may be used. However, to lower a deck part, the controller will reverse the direction of the actuator motor from the direction used to raise the deck part. For example, If the motor rotates in a first direction to raise a deck part, the controller will cause the motor to rotate In a second (reverse) direction to lower the deck part.

In one form, an actuator may be configured to push against a deck part to raise the deck part and pull against the deck part to lower the deck part. However in another form, an actuator may be configured to pul! a deck part to a raised position and to push a deck part to a lowered position.

Although, linear actuators are described and Illustrated in this specification, it should be appreciated that other forms of actuators may be used to raise (and preferably also to lower) the back rest and/or upper leg rest of the deck without departing from the invention.

In one form, the controller 500 may be configured to activate the actuation system 600 only upon constant activation of a user input 400 that results in a continuous signal 450 or series of signals 450 being sent to the controller over a predetermined time period, such as two seconds for example. In this form, it is preferable that the controller 500 comprises a clock to determine whether the predetermined time period has been satisfied.

In one form, the controller 500 is configured to cause the actuation system 600 to stop moving the back rest 310, upper leg rest 330, or both 310, 330 (as the case may be) once the respective deck part(s) are between about 0° and 30° to the frame and contact between the user and first user input 400 Is broken so that the first user input 400 is no longer activated and/or once the respective deck part reaches an angle of about 30° with respect to the bed frame 200. For example, the first user input 400 may comprise a touch sensitive switch and the controller 500 may be configured to activate the actuation system 600 to move the back rest 310, upper leg rest 330, or both 310, 330 upon receiving a signal 450 when the switch 400 is touched and until such time as the respective deck part(s) 310, 330 form an angle of between about 0° and 30° with the frame and contact from the user is removed from the switch 400 or until the back rest 310, upper leg rest 330, or both 310, 330 adopt(s) a 30° position with respect to the bed frame 200, whichever occurs first.

The bed 100 of the present invention may therefore be configured to allow the back rest 310 or upper leg rest 330 to be automatically and accurately moved to an angled position at about 30° to the bed frame 200 or to horizontal upon direction by a user via a user input, in some forms, the bed 100 may be configured to allow the back rest 310 or upper leg rest 330 to be automatically moved to an angled position between about 0° and 30° (Inclusive) to the bed frame 200 or to horizontal upon direction by a user via a user input. In some forms, the bed 100 may be configured to allow both the back rest 310 and the upper leg rest 330 to be automatically and simultaneously moved to an angled position at about 30° from the bed frame 200 upon direction by a user via a user Input in order to at least substantially form a 30°/30° position. In yet other forms, the bed 100 may be configured to allow both the back rest 310 and the upper leg rest 330 to be automatically and simultaneously moved to an angled position between about 0° and 30° (inclusive) to the bed frame 200 upon direction by a user via a user input.

The bed of the present invention therefore allows for a simple and accurate method of angling the back rest, leg rest, or both the back rest and leg rest to an angle of about 30° or less with the bed frame to minimise pressure points on the patient. In some forms, the bed of the invention aiso allows for the 30°/30° position to be at least substantially accurately achieved. Where the bed allows both the back rest 310 and lower leg rest 330 to be simultaneously moved to reach the 30°/30° position, pressure points are minimised throughout the bed deck positioning process. in one form, the bed of the invention may be configured so that the raised back rest 310, upper leg rest 330, or both 310, 330 can be lowered from a raised 30° position or the 30°/30° position to the neutral position by activating a second user input. In this configuration, the controller 500 may be configured to cause the actuation system 600 to move the respective deck part(s) 310, 330 until the neutral position o? the respective deck part(s) 310, 330 is reached. For example, if the bed is in the 30°/30° position and the controller 500 receives a signal 450 from the second user Input, the controller 500 may cause the actuation system 600 to move the back rest 310 and upper leg rest 330 to the neutral position. In one form, the controller 500 may be configured to cause the actuation system 600 to lower the respective deck part(s) 310, 330 to any angle between about 0° and 30° for as long as the second user input is activated by a user.

In another form, the bed may comprise a third user input through which a user can cause the back rest 310 to be raised to any position between about 0° and 70°, or to cause the upper leg rest 330 to be raised to any position between about 0° and 40°, or to cause both the back rest 310 and upper leg rest 330 to be simultaneously raised to any position between about 0° and 70° for the back rest 310, and between about 0° and 40° for the upper leg rest 330.

Although the invention has been described by way of example, it should be appreciated that variations and modifications may be made without departing from the scope of the Invention as defined in the claims. Furthermore, where known equivalents exist to specific features, such equivalents are incorporated as if specifically referred to in this specification. For example, although the actuators have been described as pushing against the deck parts to raise the deck parts in the examples described above, it should be appreciated that in other forms, the actuators may pul! the respective deck part(s) to a raised position and push the respective deck part(s) to a lowered position.

Claims (13)

1. What we claim is;

   1. A bed comprising: a frame supporting a bed deck comprising a back rest, a lower leg rest, and an upper leg rest located between the back rest and lower leg rest; an actuation system configured to move the back rest or upper leg rest or both between a neutral position substantially parallel with the frame and an angled position relative to the frame; and a control system comprising a first user input and a controller, wherein the user input is configured to send a signal to the controller when activated, and upon receiving the signal from the user input, the controller activates the actuation system to move the back rest, or upper leg rest, or to simultaneously move both the back rest and upper leg rest, to an angle of between about 0° and 30° with respect to the bed frame,
2. 2. A bed comprising: a frame supporting a bed deck comprising a back rest, a lower leg rest, and an upper leg rest located between the back rest and lower leg rest; an actuation system configured to move the back rest or upper leg rest or both between a neutral position substantially parallel with the frame and an angled position relative to the frame; and a control system comprising a first user input and a controller, wherein the user input is configured to send a signal to the controller when activated, and upon receiving the signal from the user input, the controller activates the actuation system to move the back rest, or upper leg rest, or to simultaneously move both the back rest and upper leg rest, to an angle o? about 30° with respect to the bed frame and to stop movement of the back rest when the back rest, or upper leg rest, or both {as the case may be) reaches about 30°.
3. 3. A bed comprising: a frame supporting a bed deck comprising a back rest, a lower leg rest, and an upper leg rest located between the back rest and lower leg rest; an actuation system configured to move the back rest or upper leg rest or both between a neutral position substantially parallel with the frame and an angled position relative to the frame; and a control system comprising a first user input and a controller, wherein the user input Is configured to send a signal to the controller when activated, and upon receiving the signal from the user input, the controller activates the actuation system to move the back rest, or upper leg rest, or to simultaneously move both the back rest and upper leg rest, to an angle of between about 0° and 30° with respect to horizontal.
4. 4. A bed comprising: a frame supporting a bed deck comprising a back rest, a lower leg rest, and an upper leg rest located between the back rest and lower leg rest; an actuation system configured to move the back rest or upper leg rest or both between a neutral position substantially parallel with the frame and an angled position relative to the frame; and a control system comprising a first user input and a controller, wherein the user input Is configured to send a signal to the controller 'when activated, and upon receiving the signal from the user input, the controller activates the actuation system to move the back rest, or upper leg rest, or to simultaneously move both the back rest and upper leg rest, to an angle of about 30° with respect to horizontal and to stop movement of the back rest when the back rest, or upper leg rest, or both (as the case may be) reaches about 30°,
5. 5. The bed according to any one of the preceding claims, wherein the bed comprises a second user Input and the controller is configured to activate the actuation system to simultaneously move the back rest and upper leg rest to the neutral position upon receiving a signal from the second user input.
6. 6. The bed according to any one of the preceding claims, 'wherein the bed deck comprises a seat rest located between the back rest and the upper leg rest.
7. 7. The bed according to any one of the preceding claims, wherein the actuation system comprises a first actuator to move the back rest.
8. 8. The bed according to claim 7, wherein the actuation system comprises a second actuator to move the upper leg rest.
9. 9. The bed according to claim 8, wherein the first and second actuators are linear actuators comprising a first end connected to the bed frame and a second end connected to the back rest and upper leg rest respectively.
10. 10. The bed according to any one of the preceding claims, wherein the user input comprises a button, switch, or lever.
11. 11. The bed according to any one of the preceding claims, wherein the control system causes the actuation system to stop moving the back rest, upper leg rest, or both once contact between the user and user input is broken so that the user Input is no longer activated.
12. 12, The bed according to claim 11, wherein the user input comprises a touch sensitive switch and wherein the controller activates the actuation system to move the back rest, upper leg rest, or both upon receiving a signa! when the switch is touched until such time as contact is removed from the switch or until the back rest, upper leg rest, or both adopt(s) a 30° position with respect to the bed frame, whichever occurs first,
13. 13, The bed according to claim 11, wherein the user input comprises a touch sensitive switch and wherein the controller activates the actuation system to move the back rest, upper leg rest, or both upon receiving a signal when the switch is touched until such time as contact is removed from the switch or until the back rest, upper leg rest, or both adopt(s) a 30° position with respect to horizontal, whichever occurs first.