EP1210049A1

EP1210049A1 - Hospital bed

Info

Publication number: EP1210049A1
Application number: EP00956440A
Authority: EP
Inventors: Martin Walz
Original assignee: Bergbau-Berufsgenossenschaft
Current assignee: Bergbau-Berufsgenossenschaft
Priority date: 1999-09-07
Filing date: 2000-08-12
Publication date: 2002-06-05
Also published as: DE19942546A1; WO2001017476A1; DE19942546B4; AU6838300A

Abstract

The invention relates to a hospital bed (1), comprising a prone-position surface (2) and a supine-position surface (3), whereby said surfaces (2, 3) can be pivoted about a rotational axis which runs parallel to the longitudinal axes of the prone-position surface (2) and supine-position surface (3). The invention aims to provide a hospital bed, on which the position of the patient can be easily changed, without any risk to said patient's health and without having to reconnect the supply lines to the patient. To this end, the prone-position surface (2) and the supine-position surface (3) can be connected at their head (4) and/or foot ends (9) to at least one part of a ring (8) which stands perpendicular to the prone-position surface (2) and the supine-position surface (3) and the centre of the ring (8) lies on the rotational axis.

Description

Kr ankenbe 1

The invention relates to a patient bed with a prone position surface and a back position surface, the prone position surface and the back position surface being rotatable about an axis of rotation running parallel to the longitudinal axes of the prone position surface and the back position surface.

Such sick beds are used for accident injuries or intensive care unit patients. Lung failure known as "adult respiratory distress syndrome" (ARDS) is often noted in these patients. A wide variety of triggers creates a pathophysiologically unclear reaction cascade that ultimately results in a progressive loss of function in the lungs. For the treatment of these patients, in addition to the known mechanical ventilation of such patients while avoiding high ventilation pressures, a treatment method has recently been successful in which the patient is brought to a prone position at regular intervals from a back position. This method of treatment has resulted in the lethality of lung failure being reduced from over 50% of the affected patients to below 20%.

Medical studies have shown that the treatment method is particularly successful if the patients are placed in a prone position and a back position at 12-hour intervals immediately after admission to the intensive care unit. The decisive mechanism of action is an optimization of the ventilation-perfusion ratio of the lungs that can only be achieved in the prone position.

With the regular repositioning of the patient there is the problem that, for example, unstable injuries to the spine and pelvis make a large number of people necessary for the repositioning of such a patient, since the patient must be propped up during the repositioning so that the existing injuries are not exacerbated , In addition, this manual relocation takes a lot of time. of nursing staff. To solve this problem, a Stryker Circ-O-Lectric bed is known from practice, which entails rearranging the patient with less manpower and a lower risk of deteriorating the patient's health.

The "Circ 0 lectπc Bed", model 470, manufactured by Stryker, Michigan, USA, enables the patient to rotate about its transverse axis. The patient bed consists of a back position on which the patient lies in a back position, a prone position on which the patient lies in a prone position, and a frame which essentially consists of two rings arranged coaxially with the central transverse axis of the back position, on the circumference of which the Head and foot ends of the prone and back positions can be attached.

When the patient is lying on his back, the head and foot ends of the back lying area are connected to the rings arranged parallel to one another. To reposition the patient, the patient is padded on the top. The prone area is placed on the upholstery. The The prone area is also connected to the rings at its head and foot ends in such a way that the patient is clamped between the back position and the prone area. The vertically standing rings are then rotated by 180 °, so that the back position surface now forms the upper surface, while the patient lies on the prone position surface which now forms the lower surface. The backrest surface can be folded up to allow access to the patient.

This sick bed, in which the patient is rotated about a transverse axis, has the disadvantage, among other things, that it is not possible to reposition the patient about the longitudinal axis for variable lateral positioning. In order to avoid pressure points caused by the continuous positioning of the patient in a back position or prone position, it has proven advantageous to position the patient laterally raised by 20 ° to 30 ° during a position on the back. In this way, the patient experiences a change in position that serves to avoid pressure points.

In order to enable the patient to be repositioned around the longitudinal axis, a bed is known from practice which has a prone position surface and a back position surface which can be rotated about a rotation axis running parallel to the long axes of the prone position surface and the back position surface. The back position surface and the prone position surface are firmly connected at their head and foot ends in the middle with a rod running perpendicular to the surfaces. The rod is in turn m rotatably mounted in the middle between the back position surface and the prone position surface, so that the back position surface and the prone position surface about the through the two bearing points of the respective axis of rotation arranged at the head and foot ends can be rotated. On the one hand, this bed allows the patient to be repositioned from a back position on my stomach and vice versa, but it also enables the patient to be pivoted to a side position during a back or stomach position by a swivel angle.

In the case of the known bed it has been shown that the supply lines, such as the catheters and the infusion lines of the patient, are wound around the rotatably mounted rod when the patient is repositioned. As a rule, this leads to the lines having to be repositioned from the back after the patient has been repositioned from a back. In many cases, however, the lines leading to the patient are vital for the patient, so that replacing and relocating these lines is often associated with a high health risk for the patient. In addition, the relocation is labor intensive.

The invention is therefore based on the object of creating a bed of the type mentioned above and described in more detail at the outset, in which the repositioning of the patient can be carried out easily without health risk for the patient, without having to carry out a re-laying of the lines supplying the patient.

This object is achieved with a sickbed of the type mentioned in the introduction in that the prone position and the back position surface at its head end and / or foot end with at least part of a ring standing perpendicular to the prone position position and back position are connectable and the center of the ring lies on the axis of rotation.

The bed according to the invention now makes it possible to lead the lines supplying the patient away from the bed through the ring. During a repositioning of the patient, the back and prone areas rotate with or on the rings around the axis of rotation, whereby the replacement of the rotatably mounted rod known from the known bed with the ring prevents tangling of the lines supplying the patient with the rod.

The omission of the rotatably mounted rod on the head or foot end also leads to better access to the patient. With a correspondingly large cross section of the ring, the patient's head is easily accessible from the head end if the ring is arranged at the head end.

From a manufacturing point of view, it is advantageous to reduce the number of different components if an identically constructed ring is provided both at the head and at the foot end of the hospital bed. In addition, this arrangement has the advantage that the patient can be well cared for from both the head and foot ends.

A particularly comfortable rearrangement for the patient is achieved in a configuration of the patient bed according to the invention in that the axis of rotation runs between the prone and back positions. This is particularly the case when the axis of rotation coincides with the longitudinal axis of the patient running centrally through the body. A robust design of a hospital bed is ensured by the fact that the prone and back positions are firmly connected to the ring. In such a case, the prone position surface and the back position surface are rotated about the axis of rotation by rotating the ring around its center.

For the purpose of rotating the ring around its center, it is particularly expedient to rotatably support the ring in the supports of a frame of the hospital bed.

In order to prevent the back position surface and the prone position surface from rotating independently about the axis of rotation, it is expedient to provide a braking device on the ring. Such a braking device can have detachable brake shoes holding the ring between them in a braking position. These are firmly attached to the bed frame and prevent the ring from rotating. Only after the brake device is released can the ring and the associated back support surface and prone surface be rotated.

In a further embodiment of the invention, it is also conceivable, as an alternative to the fixed connection between the prone position surface and the back position surface and the ring, that the prone position surface and back position surface are guided on a rail provided on the ring. In this case, the ring is stationary connected to the bed frame and the prone and back lying surfaces are moved relative to the ring.

In order to reduce the weight of the patient's bed and thus the masses that have to be moved when the patient is repositioned, it is expedient to position the patient in the prone position To produce the back layer from an outer frame, which is covered with a mesh, a cloth or a plastic film to form a lying surface. In trials with the bed according to the invention, it has been shown that covering the frame with a slightly flexible plastic film effectively prevents pressure points from occurring in the patient.

In order to ensure good accessibility to the patient after a repositioning of the patient, it is expedient that the upper surface in each case can be detached from the patient bed. In the event that the patient lies in a supine position, the prone area which is not necessary for this positioning can be detached from its holders and separated from the patient's bed. The patient is thus easily accessible for treatment from above. The same applies to a patient who has been placed in a prone position after a transfer. In the case of a prone position, it is expedient if the back position area which is not necessary for this position can be detached from the bed.

The risk of slipping of the patient clamped during the rearrangement between the back position surface and the prone position surface is additionally prevented by the fact that lateral grids are arranged on the prone position surface and / or the back position surface. These grids protrude perpendicularly from the respective surface and close the space between the back surface and the prone surface. The laterally arranged grids also serve to support the patient in a side position in which the patient is only pivoted about a certain angle about its longitudinal axis. The invention is described below on the basis of a drawing which represents only one exemplary embodiment. Show it

Fig. 1 is a side view of the hospital bed according to the invention;

Fig. 2 shows the head of the hospital bed according to the invention and

3 shows a plan view along the line III-III in FIG. 1.

1 shows the patient bed 1 with a prone position surface 2 and a back position surface 3. The prone position surface 2 and the back position surface 3 are connected to a ring 8 at the head end 4 of the patient bed 1 by scissors hinges 6 and 7 shown in FIG. 2.

At the foot end 9 of the patient bed 1, the abdominal support surface 2 and the back support surface 3 are each connected in the center with a threaded rod 10. The threaded rod 10 is connected in the middle to a bolt 11 which is rotatably mounted in a bearing 12 and is thus connected to the frame 13 of the patient bed 1. At its end facing away from the threaded rod 10, the bolt 11 is braked by the brake 14.

The ring 8 is supported on the frame 13 by means of supports 15, 16. In addition, the ring 8 is held by a caliper brake 19 having two brake shoes 17, 18 and shown in FIG. 1. The caliper brake 19 is also attached to the frame 13. The frame 13 is supported by two connecting pieces 20, 21, which are connected to the chassis 24 of the hospital bed 1 via hydraulic elements 22, 23. The chassis 24 has rollers 25, by means of which the patient bed 1 can be moved.

In the following, the head and foot end connection of the prone position surface 2 and back position surface 3 to the frame 13 is discussed in more detail. First, the head-end connection of the prone position surface 2 and the back position surface 3 with the ring 8 is described. Since these are identical, only the connection of the back position surface 3 to the ring 8 is explained in order to avoid repetitions.

The back position surface 3 has two elements 26 with through holes that are firmly connected to it. The threaded rods 27 are inserted into these through-holes. Since the through-holes can be closed at one end in each case, the threaded rods 27 can be supported against lateral displacement in the through-holes. On the threaded rod 27 there are elements 29, which have an internal thread and are firmly connected to the scissor elements 30, 31 of the scissor hinge 7. On the side facing away from the elements 29, the scissors elements 30, 31 are guided in elongated holes 32, 33, which are incorporated in a connecting rod 34. The connecting rod 34 is welded to the ring 8.

The distance between the prone position surface 2 and the back position surface 3 can be changed by rotating the threaded rods 27. Due to the rotation, the elements 29 connected to the scissors elements 30, 31 are moved towards one another or moved away from one another, as a result of which the Scissors elements 30,31 contracted or spread. By pulling together or spreading the scissors elements 30, 31, the distance between the prone surface 2 or the back surface 3 and the connecting rods 34 is changed, so that the distance between the prone surface 2 and the back surface 3 is also changed.

At the foot end, the abdominal support surface 2 and the back support surface 3 are connected centrally to the threaded rod 10. For this purpose, gripping elements 35 are provided at the foot end, which partially encompass the threaded rod 10. Above and below the gripping elements 35, holding elements 36 are provided on the threaded rod 10, which have an internal thread and can thus be moved along the threaded rod 10 and can adjust the gripping position of the gripping element 35 on the threaded rod 10. By moving the holding elements 36 by rotation closer to the center of the threaded rod 10, the gripping elements 35 are also moved to the center of the threaded rod 10, so that the distance between the prone surface 2 and the back surface 3 is reduced. The distance is increased by moving the holding elements 36 away from the center of the threaded rod 10.

The ring 8 is divided into two half rings 37 and 38. These half rings 37, 38 are firmly connected to one another via a locking mechanism 39. Will the

Locking mechanism 39 released, the half ring 37 can be separated from the half ring 38. If at the same time the foot-end gripping element 35 is detached from the threaded rod 10, the upper bearing surface of the patient bed 1 can be separated from the lower bearing surface. In the position of the patient bed 1 shown in FIGS. 1 and 2 Accordingly, the back support surface 3 with the half ring 37 could be lifted off the frame 13 and the half ring 38.

3 shows a top view of the prone position surface 2. The prone position surface 2 consists of a frame 40 and an elastic film 41 stretched over the frame 40. On the head end side, the prone position surface 2 has a narrower surface 42 which is inserted into the ring 8. An opening 43 is also provided on the head side in the film 41, into which the face of the patient lying on the stomach, not shown, is placed.

The transfer of the patient, not shown, from a prone position to a supine position is described below. The patient lies in the prone position on the prone position surface 2. The back position surface 3 and the half ring 36 are lifted off the patient bed 1. The patient's supply lines, not shown, such as Infusion lines are routed away from the patient through the ring 8.

For repositioning, the patient is padded on his back with cushion elements, such as pillows or blankets. Then the back support surface 3 and the half ring 37 are lifted onto the bed. At the foot end, the gripping element 35 comprises the threaded rod 10. The half ring 37 engages in the locking mechanism 39. By means of the scissors hinges 6, 7 and the holding elements 36, the distance between the back position surface 3 and the abdominal position surface 2 can be adjusted so that the patient is held well between the cushion elements. The abdominal support surface 2 and the back support surface 3 are then used for additional securing Safety straps 44 connected to each other. In addition, a preferably multi-stage foldable grille 45 is opened, which prevents the patient from shifting sideways.

After the patient is secured in this way, the brake 14 and the caliper brake 19 are released by the foot pedal 46. The ring 8 can now be turned around its center on the supports 15, 16, while the threaded rod 10 can be turned in the bearing 12 by means of the bolt 11. With the rotation of the ring 8 and the threaded rod 10, the abdominal support surface 2 and back support surface 3 connected to them are also rotated.

After a rotation of 180 °, the patient lies in a supine position on the supine surface 3 now positioned at the bottom. Since the supply lines are guided through the ring 8, there is no longer any risk that the supply lines become tangled or on frame elements of the bed when the patient is repositioned snag.

After the patent has been placed in a supine position, the ring 8 and the threaded rod 10 with the brake 14 and the caliper brake 19 are determined. Subsequently, the prone position surface 2, which is now positioned at the top, can be removed by removing the securing straps 44 and releasing the locking mechanism 39 and the upper holding elements 36, so that the prone position surface 2 can be lifted off.

A transfer from a supine position to a prone position is done in a similar way. During a back position, the patient can be pivoted by any angle, for example up to 30 °, by releasing the brake 14 and the caliper brake 19 and slightly rotating the back position surface 3. The grid 45 prevents the patient from sliding down from the slightly inclined back position surface 3. Of course, it is also conceivable that the prone position surface 2 is additionally or alternatively also equipped with side grilles, so that the patient can also be brought into a laterally inclined position in the prone position.

The hydraulic elements 22, 23 are designed in such a way that the patient can be lifted beyond the usual stroke in patient beds, so that the nursing staff can easily get under the prone surface 2 and the correct fit of the supply lines or ventilation lines in the opening 43 can check the patient's lying face. Otherwise, all of the inclined positions known from conventional hospital beds can be set relative to the transverse axis of the patient with the hydraulic elements 22, 23.

So-called Braun rails can be provided on the frame 13, to which, for example, devices and drops supplying the patient can be attached. The elements attached to the Braun rails do not rotate when the patient is repositioned. Therefore, they do not have to be removed before the rotation and reassembled after the rotation, but remain fixed to the frame. The lines leading from the devices and drops to the patient can be laid through the ring 8 to the patient, so that this line is not wrapped around frame elements by the rearrangement.

Claims

claims

1. Sick bed (1) with a prone position surface (2) and a back position surface (3), the prone position surface (2) and the back position surface (3) being parallel to the longitudinal axes of the prone position surface (2) and the back position surface

(3) extending axis of rotation are rotatable, characterized in that the prone position surface (2) and the back position surface (3) at their head end (4) and / or foot end (9) with at least part of a perpendicular to the prone position surface (2) and back position surface (3) standing ring (8) can be connected and the center of the ring (8) lies on the axis of rotation.

2. Sick bed (1) according to claim 1, characterized in that the axis of rotation runs between the prone position surface (2) and the back position surface (3).

3. Sick bed (1) according to one of claims 1 or 2, characterized in that the prone position surface (2) and the back position surface (3) are firmly connected to the ring (8).

4. Sick bed (1) according to one of claims 1 to 3, characterized in that the ring (8) in supports (15, 16) of a frame (13) of the sick bed

(1) is rotatably mounted.

5. Sick bed (1) according to one of claims 1 to 4, characterized in that a braking device (19) is provided on the ring (8).

6. Sick bed (1) according to claim 5, characterized in that the braking device (19) has releasable, the ring (8) in a braking position between the brake shoes (17, 18).

7. Sick bed (1) according to one of claims 1 or 2, characterized in that the abdominal support surface (2) and the back support surface (3) are guided on a rail provided on the ring (8).

8. Sick bed (l) according to any one of claims 1 to 7, characterized in that the abdominal support surface (2) and the back support surface (3) consist of an outer frame (40) which is used to form a lying surface with a mesh, a cloth or a plastic film (41) is covered.

9. bed (1) according to one of claims 1 to 8, characterized in that the respective upper bearing surface is detachable from the bed.

10. Sick bed (1) according to one of claims 1 to 9, characterized in that lateral grids (45) are arranged on the prone surface (2) and / or the back surface (3).