WO2014191684A1

WO2014191684A1 - Bed with a hinged bed base in order for the patient to exit at the foot of the bed

Info

Publication number: WO2014191684A1
Application number: PCT/FR2014/051260
Authority: WO
Inventors: Dominique Fouquet; Jérémy Demion
Original assignee: Edena Sas
Priority date: 2013-05-28
Filing date: 2014-05-28
Publication date: 2014-12-04
Also published as: FR3006175B1; EP2808002B1; EP2808002A1; FR3006175A1

Abstract

The invention concerns a bed (10) comprising a hinged bed base (12) comprising different articulated parts (14) forming a sleeping surface (16) intended to receive a mattress, the bed comprising a first lower frame (18) with floor supports (20), said lower frame making it possible to raise, lower or tilt the hinged bed base (12) relative to the ground, the bed further comprising a second upper frame (22) interposed between the lower frame (18) and the hinged bed base (12), this upper frame supporting the hinged bed base (12), and the bed extending along a longitudinal central axis (L10) between the foot (24) of the bed and the head (26) of the bed, the bed (10) being characterised in that the upper frame (22) is mounted in translation along the longitudinal central axis (L10) on the lower frame (18).

Description

BED WITH ARTICULATED SOMMIER FOR OUTPUT OF PATIENT IN

FOOT OF THE BED

The present invention relates to a bed, for example a hospital bed, comprising an articulated bed base for an exit bed patient bed.

In the medical or hospital environment, the beds must be equipped with articulated bed bases to bring bedridden patients from a supine position to different seating positions for meals, to provide some care, or simply for their own comfort.

According to a development more and more requested, the articulated bed bases must also help to help the bedridden patient to get up and leave the bed. For this purpose, the hospital bed described in EP-2,308,442 is known. According to EP-2.308.442, the medical bed comprises a rolling frame and supporting an articulated bed base extending between the footboard and the headboard. From the headboard to the footboard, the articulated bed frame comprises various articulated parts and forming a sleeping surface on which is deposited a mattress.

Some of these parts are hinged together and movable relative to the chassis.

In more detail, from the headboard to the footboard, the articulated bed base includes a backrest, a seat, a thigh and a footrest.

The backrest is movable in rotation relative to the seat so as to take different angles of inclination corresponding to different lying or sitting positions of the patient, the seat is fixed, and the thigh is rotatable relative to to the seat so as to take different angles of inclination to raise the legs of the bedridden patient. Finally, the footrest is movable in rotation relative to the thigh to avoid the patient to find himself in an uncomfortable position with the legs straight when tilting the thigh and / or the backrest relative to the chassis .

Naturally, the rotations of the different parts of the mattress between them are carried out about transverse axes parallel to each other and perpendicular to the longitudinal axis of the bed.

In order to help the patient to get up again, this document EP-2.308.442 provides for folding the footrest to the ground, that is to say under the plane in which the seat is and in a position substantially vertical.

Thus, at first, by tilting the backrest to its maximum angle of inclination relative to the frame and folding the footrest to the ground, as illustrated in Figure 4 of this document EP-2.308 .442, the bedridden patient is seated as in an armchair.

Subsequently, as illustrated in FIG. 7 of this document EP-2.308.442, it is intended to drive the pan forming the backrest to the footboard using a deformable quadrilateral system, this in order to further straighten the patient's back and prepare him to leave the bed.

And finally, in a last time, EP-2.308.442 provides for tilting the articulated bed base by raising the headboard, as illustrated in Figure 8 of this document.

Thus, the patient is almost accompanied to a standing position allowing him to leave the bed.

In addition, in this document EP-2.308.442, the outer half-facing of the footboard pivot on both sides of the frame so as to provide armrests or support handles to help the patient to maintain during the bed-exit operation and help him to get up again. Although allowing the patient bedridden to stand comfortably and safely, the design of the bed described in EP-2.308.442 has some disadvantages.

First, the design of the bed base articulated bed foot is likely to cause instability of the bed in some situations.

Indeed, to be able to fold the footrest to the ground, it is necessary to deport the supports of the frame located at the foot of the bed towards the center of the frame. As a result, a relatively large portion of the sleeping surface located at the foot of the bed is cantilevered relative to the frame.

This part cantilever can be dangerous because, if for some reason, a sufficiently large mass bears on this cantilevered part, the bed can become unstable.

This situation may occur, for example, if the patient, or another person, sits or relies solely on this cantilevered part.

Also, to remedy the dangerous nature of this cantilevered part, this document EP-2.308.442 provides supports mounted at the end of retractable extensions, as illustrated in Figures 3 to 5 of this document.

These retractable supports are deployed when the footrest is not folded down to the ground, and they are pushed back to their retracted position by the descent of the foot-foot.

However, if the retraction of the support extensions is carried out automatically under the effect of the descent footrest, the deployment of these extensions requires the presence of return means powerful enough to compensate for the friction of these retractable supports on the ground.

Finally, as it is conceived in this document EP-2.308.442, the folding footrest leads to a complexification of the design of the medical bed, and therefore an increase in its cost. At the same time, the outer half-sills of the footboard require specific actuators to pivot to the appropriate support positions.

These additional actuators also require additional control means.

Thus, these pivoting outer half-faces also complicate the design of the bed, and they also increase the cost of the hospital bed.

The present invention aims to overcome the disadvantages of the prior art.

For this purpose, the subject of the invention is a bed, for example a medical bed, comprising an articulated bed base comprising different articulated parts forming a sleeping surface intended to receive a mattress, the bed comprising a first lower frame with supports on the ground, this lower frame for raising, lowering or tilting the articulated bed base with respect to the floor, the bed further comprising a second upper frame interposed between the lower frame and the articulated bed, this upper frame supporting the articulated bed, and the bed extending along a central longitudinal axis between a footboard and a headboard.

According to the invention, the bed is characterized in that the upper frame is mounted in translation along the longitudinal central axis on the lower frame.

Thanks to this mounting in translation of the upper frame on the lower frame, the bed frame can be brought to the footboard to facilitate the accompaniment of a bedridden person to a sitting position or almost standing at the foot of bed.

Advantageously, this mounting in translation of the upper frame also makes it possible to avoid modifying the position of the supports on the ground of the lower chassis. This avoids making the bed unstable in certain situations where a person would come to sit or lean towards the footboard.

In addition, this mounting in translation of the upper carriage is of simple design and therefore inexpensive to achieve. Other features and advantages will emerge from the following description of the invention, a description given by way of example only, with reference to the appended drawings in which:

FIG. 1 represents a front view in perspective of a bed according to the invention,

- Figures 2 to 7 show side views of the various stages of moving a bed according to the invention for bringing a bedridden person from a supine position to a position almost raised.

As illustrated in Figure 1, the present invention relates to a bed 10 comprising an articulated bed base 12 comprising different articulated parts 14 forming a sleeping surface 16 for receiving a mattress (not shown).

In the present invention, the different parts 14 of the bed base 12 are hinged together, and at least one of these parts 14 is connected to the elements forming the frame of the bed 10.

The bed 10 according to the invention comprises a first lower frame 18 with supports 20.

In known manner, these ground supports 20 can take different forms: single wheels, bogies on wheels, with or without braking means, or simple planar support.

The lower frame 18 can raise, lower or incline the articulated bed base 12 relative to the ground S.

In addition, the bed 10 according to the invention comprises a second upper frame 22 interposed between the lower frame 18 and the articulated bed base 12.

According to the invention, this upper frame 22 supports the articulated bed base 12.

More specifically, the upper frame 22 supports the articulated bed base 12 so as to set it in motion, some parts 14 of the bed base 12 able to rest or rely on parts of the lower frame 18 according to the position they take when they are set in motion.

The bed 10 extends along a longitudinal central axis L10 between a footboard 24 and a headboard 26.

This longitudinal central axis L10 is parallel to the coating plane PC formed by the coating surface 16 when the different parts 14 of the bed base 12 are not inclined relative to each other, as illustrated in FIGS. 2 and 3, and this longitudinal central axis IOL is contained in a vertical median plane PMV separating the bed 10 into two longitudinal halves.

According to an important characteristic of the invention, the upper frame 22 is mounted in translation along the longitudinal central axis L10 on the lower frame 18.

With this mounting in translation, the upper frame 22, and therefore the articulated bed base 12 that it supports, can be brought to the footboard 24 to accompany a bedridden person to a sitting position at the foot of the bed, and even to a standing position at the foot of the bed to help the person get out of bed.

In more detail, and as illustrated by FIGS. 1 and 2, the lower frame 18 comprises an upper platform 28, a lower platform 30

the ground supports 20, and means 32 for raising, lowering or tilting the upper platform 28 relative to the lower platform 30, and therefore relative to the ground S.

In order to mount it in translation, the upper frame 22 takes the form of a carriage 34 slidably mounted in translation along the longitudinal central axis L10 on the upper platform 28.

In a preferred embodiment of the lower frame 18, and as illustrated by FIGS. 1 to 3, the lower platform 30 consists of two lateral side members 361,362, and the means 32 for raising, lowering or the inclination of the upper platform 28 comprise, respectively on the side of the headboard 26 and the side of the footboard 24, the uprights 381,382 and the uprights 383,384 and an actuator 401,402, these amounts 381,382 and 383,384 and these actuators 401,402 being articulated between the lower platform 30 and the upper platform 28.

Preferably, these amounts 381,382 and 383,384 and these actuators 401,402 are articulated between the lower platform 30 and the upper platform 28 about transverse axes perpendicular to the longitudinal central axis L10.

In a preferred embodiment of translational mounting of the upper frame 22, two lateral rails 421, 422 are mounted along the longitudinal edges 281, 282 of the upper platform 28, and the sliding carriage 34 comprises lateral walls 341, 342 supporting rollers (not visible on the figures) guided in translation in these lateral rails 421, 422.

With a view to the automated translation of the carriage 34, an actuator 44 is articulated between the upper platform 28 and the sliding carriage 34.

Preferably, this actuator 44 is articulated to the upper platform 28 and the sliding carriage 34 about transverse axes perpendicular to the longitudinal central axis L10.

Advantageously, this actuator 44 is placed under the upper platform 28 and under the sliding carriage 34.

As can be seen in FIG. 1, the articulated bed base 12 comprises a seat 46, a backrest 48 hinged to this seat on the side of the headboard 26, a thigh rest 50 hinged to this seat on the side of the footboard. 24, and a footrest 52 hinged to the thigh and extending the thighs to the footboard 24.

According to the invention, only the seat 46 is fixed on the sliding carriage 34.

Indeed, this seat 46 is the only part 14 of the bed base 12 which does not need to be inclined relative to the upper frame 22. In a preferred embodiment of the movement of the various parts 14 of the bed base 12, only the backrest 48 and the thigh 50 are rotated by actuators.

As can be seen in FIGS. 4 to 7, an actuator 54 for rotating the backrest 48 with respect to the seat 46 is articulated between the sliding carriage 34 and this backrest, and an actuator 56 for rotation of the leg rest 50 relative to the seat 46 is articulated between the sliding carriage 34 and the thigh rest 50.

Preferably, the different parts 14 of the bed base 12 are hinged together about transverse axes perpendicular to the longitudinal central axis L10, and the actuators 54,56 which connect some of these parts 14 to each other are also articulated to these parts 14 around transverse axes perpendicular to the longitudinal central axis L10.

Advantageously, the actuator 54 for rotating the backrest 48 relative to the seat 46 is placed under the sliding carriage 34 and under this backrest, and the actuator 56 for rotating the leg rest 50 relative to the seat 46 is placed under the sliding carriage 34 and under the leg rest 50. In order to improve the support of the bedridden person to a sitting position or almost standing at the foot of the bed, the footrest 52 comprises at least one retractable footrest 58.

Thus, when this footrest 58 comes into contact with the ground S due to a setting in motion of the bed base 12, such as that shown in Figure 7, it does not block this setting in motion.

Finally, in order to obtain a kinematic of the bed base 12 to comfortably accompany the bedridden person to a sitting position or almost standing at the foot of the bed, the upper platform 28 comprises a retractable end portion 60 at the foot of bed 24, this end portion 60 being deployed in FIG. 2 and retracted in FIG. Specifically, this retractable end portion 60 reduces the length L28 of the upper platform 28 to allow the footrest 58 and the footrest 52 to descend more quickly to the ground S when the bed base 12 is translated to the foot of bed 24, as can be seen in Figures 4 to 7.

Compared with the prior art, the design of the bed 10 according to the invention, and more particularly the setting in motion of its articulated bed base 12, is simple, reliable and compact.

In parallel, the present invention also covers a method of using the bed 10 which has just been described.

This method of use relates to an accompanying cycle of a bedridden person to a sitting position, and a cycle of accompanying a bedridden person to a position almost standing.

With a view to accompanying a bedridden person to a sitting position, the method of use comprising, preferably chronologically, the following steps:

lowering the upper platform 28 towards the ground S, preferably 50 cm from the ground S, and horizontally from this upper platform, as illustrated in FIG. 2,

lifting the backrest 48, preferably at 50 °, relative to the upper platform 28 and raising the thigh 50, preferably 27 °, relative to the upper platform 28, as shown in Figure 4 ,

translation, preferably over a travel of 350 millimeters, of the sliding carriage 34 towards the footboard 24, as illustrated in FIG. 5, and

lifting the backrest 48 to its extreme lifting position, preferably located at 70 ° with respect to the upper platform 28, and lowering the thigh recess 50, preferably at 9 ° relative to the upper platform 28, and translating the sliding carriage to its exact position towards the footboard 24, preferably over a further 80 millimeters stroke, as shown in FIG.

As illustrated in FIG. 1, the bed 10 comprises control means 62 of the various actuators 44, 401, 402, 54 and 56.

Also, these control means 62 comprising various buttons for triggering different movements or different sequences of movements of the articulated bed 12 and the upper frame 22 and lower 18, the method of use provides that the support on a single button, called button "Meal", triggers the accompaniment cycle.

Due to safety standards, any relaxation of the support on this button "meal" during the accompanying cycle of the bedridden person to a sitting position stops all movement of the bed 10 and its articulated bed base 12. In view of the accompaniment of a bedridden person to an almost standing position, and as illustrated in Figure 7, the method of use provides for adding a final step of inclining the upper platform 28 by raising the headboard 26 and lowering the footboard 24.

The upper platform 28 comprising a retractable end portion 60 at the foot of bed 24, the method of use provides for retracting the end portion 60, for example manually, before the second lifting step of the backrest 48 and the thigh lift 50.

Claims

A bed (10) comprising an articulated bed (12) comprising various hinged portions (14) forming a sleeping surface (16) for receiving a mattress, the bed comprising a first lower frame (18) with supports on the ground ( 20), this lower frame for raising, lowering or tilting the articulated bed (12) relative to the floor (S), the bed further comprising a second upper frame (22) interposed between the lower frame ( 18) and the hinged bed (12), the upper frame supporting the hinged bed (12), and the bed extending along a longitudinal central axis (L10) between a footboard (24) and a bed head (12). bed (26), the bed (10) being characterized in that the upper frame (22) is mounted in translation along the longitudinal central axis (L10) on the lower frame (18).

2. Bed (10) according to the preceding claim, the lower frame (18) comprising an upper platform (28), a lower platform (30) for the floor supports (20), and means (32) for raising, lowering or tilting the upper platform (28) relative to the lower platform (30), wherein the upper frame (22) takes the form of a carriage (34) slidably mounted in translation along the longitudinal central axis (LOL) on the upper platform (28).

3. Bed (10) according to the preceding claim, wherein two side rails (421,422) are mounted along the longitudinal edges (281,282) of the upper platform (28), and wherein the sliding carriage (34) comprises side walls. (341,342) supporting rollers guided in translation in these lateral rails (421,422).

4. Bed (10) according to the preceding claim, wherein an actuator (44) is articulated between the upper platform (28) and the sliding carriage

(34).

5. Bed (10) according to one of the three preceding claims, wherein, the articulated bed base (12) comprising a seat (46), a backrest (48) articulated to this seat on the side of the headboard. (26), a leg rest (50) hinged to this seat on the side of the footboard (24), and a footrest (52) articulated to the thigh rest and extending the thighs to the footboard ( 24), only the seat (46) is fixed on the sliding carriage (34).

6. Bed (10) according to the preceding claim, wherein an actuator (54) for rotating the backrest (48) relative to the seat (46) is articulated between the sliding carriage (34) and relieves it. -buste, and wherein an actuator (56) for rotating the leg rest (50) relative to the seat (46) is articulated between the sliding carriage (34) and the thigh (50).

7. Bed (10) according to one of the two preceding claims, wherein the footrest (52) comprises at least one footrest (58) retractable.

8. Bed (10) according to one of the preceding claims, wherein the upper platform (28) comprises a retractable end portion (60) at the bottom of bed (24).

A method of using a bed (10) comprising an articulated bed (12) comprising different hinged portions (14) forming a sleeping surface (16) for receiving a mattress, the bed comprising a first lower frame (18). ) with supports on the ground (20), this lower frame for raising, lowering or inclining the articulated bed (12) with respect to the ground (S), the bed further comprising a second upper frame (22). ) interposed between the lower frame (18) and the articulated bed (12), this upper frame supporting the articulated bed (12), the bed extending along a central longitudinal axis (L10) between a footboard ( 24) and a headboard (26), the upper frame (22) being translationally mounted along the longitudinal central axis (L10) on the lower frame (18), the lower frame (18) comprising an upper platform (28), a lower platform (30) concealing the supports on the ground (20), and means (32) for raising, lowering or tilting the upper platform (28) relative to the lower platform (30), the upper frame (22) taking the form of a carriage (34) slidably mounted in translation along the longitudinal central axis (L10) on the upper platform (28), and the articulated bed (12) comprising a seat (46), an articulated backrest (48) at this seat on the side of the headboard (26), a thigh support (50) hinged to this seat on the side of the footboard (24), and a footrest (52) articulated to the thigh and extending this leg rest to the footboard (24), and only the seat (46) being fixed on the sliding carriage (34), the method of use being characterized in that it provides a support cycle of a person bedridden to a sitting position comprising the following steps:

- lowering the upper platform (28) to the ground (S) and horizontally of this upper platform,

lifting the backrest (48) relative to the upper platform (28) and lifting the thigh section (50) relative to the upper platform (28),

translating the sliding carriage (34) towards the footboard (24), and

- lifting the backrest (48) to its extreme lifting position, and lowering the thigh support (50), and translating the sliding carriage (34) to its extreme position towards the footboard (24) .

10. A method of using a bed (10) according to the preceding claim, wherein, the bed (10) comprising control means (62) of its various actuators, the method of use provides that the support on a single button, called the "meal" button, triggers the accompaniment cycle.

11. A method of using a bed (10) according to the preceding claim, wherein any relaxation of the support on this button "meal" during the accompanying cycle of the bedridden to a sitting position stops any movement of the bed (10) and its hinged bed base (12).

The method of using a bed (10) according to claim 9, wherein the method of use provides for a cycle of accompanying a bedridden person to an almost standing position adding a final step of tilting the platform upper (28) by elevating the headboard (26) and lowering the footboard (24).

13. A method of using a bed (10) according to one of claims 9 to 12, wherein, the upper platform (28) comprising a retractable end portion (60) at the foot of bed (24), the method of use provides for retracting the end portion (60) prior to the second lift step of the backrest (48) and the thigh support (50).