DE102016006168A1 - Patient bed assembly and incubator - Google Patents

Abstract

The invention relates to a patient bed assembly and a neonatal thermal therapy device, wherein the patient bed assembly comprises a bed frame and a drawer. The bed frame includes a drawer slide configured to permit movement of the drawer from a central retracted position in the bed frame along a first extension direction and a second extension direction opposite the first extension direction to an extended position of the drawer. A drawer centering device urges the drawer into the central, inserted position. The invention further relates to a patient bed assembly and a heat therapy device, in which a drawer can be removed from a guide and a drawer tilt protection device is provided which transmits a force acting on the drawer torque directly to a bed frame and a downward tilting of the drawer relative to the bed frame to a Axis perpendicular to the extension directions prevented.

Description

The invention relates to a thermal therapy device, in particular an incubator, for newborns with a patient bed module.

In the care of premature babies, there are two therapeutic approaches. For closed care, children are placed in thermal therapy equipment in the form of closed incubators. These can provide an environment tailored to the needs of the child, with moist, warm and possibly oxygen-enriched air. The patient room in an incubator chamber of the incubator consists of a lying surface on a platform, which is surrounded by side walls. A hood closes the patient area upwards. To reach the child, so-called handports can be opened in the side walls or, if necessary, a complete side wall can be opened.

The second therapeutic approach is to place the preterm infants in thermal therapy equipment in the form of open nursing beds, which allow a warming of the child by radiant heater. These heated beds provide easier access to the child for the nursing staff compared to closed incubators. Typically, the side walls protecting the child from falling out are about 150 mm high so that the caregiver can easily grasp the side walls in the device. The side walls of an incubator are typically higher because of the need for some air volume within the incubator and for better access to the child with the side walls open.

Hybrid devices are heat therapy devices that combine the device types of closed incubator and thermal bed. To get from the closed to the open care, a hood is removed from the side walls and the child is heated by radiant heaters. Thus, the access to the child with closed side walls and open hood is quite unfavorable, because the nursing staff must cumbersome grab over the side walls in the patient area or fold down the side walls. The child should never be left unattended when the side walls are folded down. One approach is to reduce the height of the sidewalls and provide extra volume through a high hood. However, this leads to a reduced freedom of work in the closed care (hood closed) with the side wall open.

Hereinafter, the term thermal therapy device is understood to mean incubators for closed care, nursing beds for open nursing as well as hybrid devices. All heat therapy devices have in common that they have a patient bed on which the newborn child can lie. In many cases, it is also provided that there is a so-called x-ray drawer under the bed. An X-ray drawer is understood to be a receptacle which is arranged underneath the lying surface and into which an X-ray cassette can be inserted, so that the newborn child can be examined X-ray diagnostically while it is lying on the patient bed arranged above the X-ray drawer.

For example disclosed DE 100 62 127 A1 a heat therapy device, in which the lying surface including an underlying X-ray drawer can be pushed out of the device. Also DE 199 16 890 A1 discloses an X-ray drawer disposed below the bed in an incubator.

The lying surface, including the bed frame, in which the lying surface is arranged, and the underlying X-ray drawer, are also considered as a patient bed assembly. To the patient bed assembly can also include, if any, other components that serve to hold and mount the bed frame.

The X-ray drawers known from the prior art often have certain disadvantages which are to be overcome in the course of the present invention. Thus, it is desirable, for example, that the X-ray drawer can be pulled out in different directions in order to ensure the best possible accessibility to the drawer. At the same time, for example, the drawer should also be reliably aligned in a defined position when taking a picture. When pulled out, it is desirable for the drawer to have a certain tendency to tilt.

The object of the invention is therefore to provide an improved patient bed assembly for a neonatal thermal therapy device. The patient bed module should, for example, have an improved X-ray drawer. In addition, it is an object of the invention to provide an improved thermal therapy device with such an improved patient bed module. In any case, the patient bed assembly should be as inexpensive and easy to produce.

The invention provides a patient assembly for a neonatal thermal therapy device having the features of claim 1 or claim 3, and a thermal therapy device having such a patient assembly according to claim 12.

• • wobei der Bettrahmen eine Führung für die Schublade aufweist,
• • wobei die Schublade mit Hilfe der Führung von einer Mittelposition sowohl in eine erste Auszugsposition als auch in eine zweite Auszugsposition bewegbar ist,
• • wobei das Bewegen der Schublade von der Mittelposition in die erste Auszugsposition entlang einer ersten Auszugsrichtung verläuft und wobei das Bewegen der Schublade von der Mittelposition in die zweite Auszugsposition entlang einer zweiten Auszugsrichtung verläuft,
• • wobei die zweite Auszugsrichtung gegenläufig zur ersten Auszugsrichtung ist, so dass die erste Auszugsposition und die zweite Auszugsposition auf einander gegenüberliegenden Seiten des Wärmetherapiegerätes angeordnet sind
• • und wobei die Schubladenzentrierungsvorrichtung die Schublade bei einer Annäherung der Schublade an die Mittelposition entlang der ersten oder zweiten Auszugsrichtung derart mit einer Kraft beaufschlagt, dass die Schublade in die Mittelposition geführt und gehalten wird.

In a first embodiment of a patient bed assembly for a neonatal thermal therapy device, the invention provides that the patient bed assembly comprises a bed frame, a drawer and a drawer centering device,

• The bed frame has a guide for the drawer,
• The drawer being movable by means of the guide from a middle position into both a first pull-out position and a second pull-out position,
• Wherein the moving of the drawer from the center position to the first extension position along a first extension direction and wherein the movement of the drawer from the center position to the second extension position along a second extension direction,
• Wherein the second extension direction is opposite to the first extension direction, so that the first pull-out position and the second pull-out position are arranged on opposite sides of the heat therapy device
• And wherein the drawer centering device acts on the drawer when the drawer approaches the central position along the first or second extension direction with a force such that the drawer is guided and held in the central position.

In this context, the patient bed module is the part of the thermal therapy device that comprises the lying surface. The mattress is typically a mattress. The mattress is stored in a bed frame. The bed frame can have a corresponding receptacle for the mattress. It is also conceivable that the mattress simply rests on the bed frame without a special receptacle is formed. The bed frame is equipped with appropriate storage and / or mounting means that allow the bed frame to be installed in a thermal therapy device. For example, the bed frame may have projections or recesses that can be positively engaged with corresponding protrusions or recesses of the heat therapy device so that the bed frame is stored in the heat therapy device.

The drawer of the patient bed assembly is preferably an X-ray drawer as described above. An X-ray cassette can therefore be inserted into the drawer. The drawer is preferably arranged in the patient bed assembly such that it is arranged in the closed state under the lying surface of the patient bed assembly. The closed state of the drawer is also referred to as the center position or in other words: the center position represents the closed state of the drawer. In the middle position, the drawer is arranged centrally below the lying surface. This offers the advantage that a child lying on the lying surface can be x-rayed directly in the heat therapy device. It is therefore not necessary to remove the child from the heat therapy device for the appropriate X-ray diagnostic examination. Rather, the procedure is simple as follows: The drawer is first pulled out of the middle position, so that the drawer is in an open state. This opened state is also referred to as the first or second pull-out position, as described in more detail below. Next, place an X-ray cassette in the open drawer. The drawer is closed again, d. H. she is moved back to the middle position. The X-ray cassette is therefore located below the lying on the lying surface child. If X-ray radiation is emitted from above in the direction of the lying surface, the X-ray image of the child is detected with the aid of the X-ray cassette without the child having to be taken off the lying surface or even out of the thermal therapy device.

It can be seen in this context that it is particularly advantageous if the bed frame has a guide for the drawer and if a drawer centering device is provided.

With the aid of the guide, the drawer can be moved back and forth between the middle position, the first and the second pull-out position. Both in the first and in the second pull-out position, the drawer is open. The first pull-out position lies on one side of the patient bed module and the second pull-out position lies on the opposite side of the patient bed module. It can therefore be seen that the middle position is located between the first and the second pull-out position. In other words, standing in front of the patient bed assembly, the drawer can be pulled out from the center position, both to the right and to the left from the patient bed assembly. The movement of the drawer from the middle position to the first pull-out position takes place in a first extension direction. The movement of the drawer from the middle position to the second pull-out position takes place in a second extension direction. The first extension direction and the second extension direction are opposite to each other. For example, it is conceivable that the guide is simply formed by one or more rails on which the drawer in the first extension direction and in the second extension direction can slide back and forth.

The drawer centering device serves to align the drawer in the middle position as accurately as possible. With her help can For example, to ensure that the drawer always comes in the correct position for the recording when it is closed. This is especially helpful to prevent the drawer from either being pushed past the middle position or coming to a halt just before the middle position. It is therefore advantageous if it is provided that the drawer centering device acts on the drawer with a force. This force acts both against the first extension direction and against the second extension direction and always pushes or pulls the drawer in the middle position when the drawer is in the vicinity of the center position. In order to extend the drawer in the first extension direction towards the first extension position, a force must therefore be expended that is greater than the force exerted by the drawer centering device. The same applies to the extension of the drawer in the second extension direction towards the second extension position.

The drawer can be removed from the guide. This is particularly advantageous for cleaning purposes.

In other words, a patient bed assembly for a neonatal thermal therapy device according to the invention comprises a bed frame and a drawer. The bed frame has a guide for the drawer. The guide is configured to permit movement of the drawer from a central retracted position in the bed frame along a first extension direction of the guide to an extended position of the drawer and movement of the drawer from the central retracted position in the bed frame along one of the first extension directions allow opposite second extension direction of the guide in an extended position of the drawer. A drawer centering device is provided which urges the drawer into the central retracted position.

This allows flexible care of the newborn, since, for example, an X-ray cassette or an X-ray detector can be accommodated in the drawer and thus directly in the patient bed assembly, and an incubator with the patient bed assembly can be flexibly inserted through the two-sided extension directions.

Preferably, a drawer tilt protection device may be provided which prevents downward tilting of the drawer relative to the bed frame about an axis perpendicular to the extension directions. In this way, even with a load on the drawer in the pulled-out position, tilting of the drawer relative to the bed frame is prevented.

• • wobei der Bettrahmen eine Führung für die Schublade aufweist,
• • wobei die Schublade mit Hilfe der Führung von einer Mittelposition sowohl in eine erste Auszugsposition als auch in eine zweite Auszugsposition bewegbar ist,
• • wobei das Bewegen der Schublade von der Mittelposition in die erste Auszugsposition entlang einer ersten Auszugsrichtung verläuft und wobei das Bewegen der Schublade von der Mittelposition in die zweite Auszugsposition entlang einer zweiten Auszugsrichtung verläuft,
• • wobei die zweite Auszugsrichtung gegenläufig zur ersten Auszugsrichtung ist, so dass die erste Auszugsposition und die zweite Auszugsposition auf einander gegenüberliegenden Seiten des Wärmetherapiegerätes angeordnet sind,
• • wobei die Schubladenkippschutzvorrichtung ein auf die Schublade wirkendes Drehmoment direkt auf den Bettrahmen überträgt, und
• • wobei die Schubladenkippschutzvorrichtung ein nach unten Kippen der Schublade relativ zum Bettrahmen um eine Achse senkrecht zu den Auszugsrichtungen verhindert.

In a second embodiment of a patient bed assembly for a neonatal thermal therapy device, the invention provides that the patient bed assembly comprises a bed frame, a drawer and a drawer tilt protection device,

• The bed frame has a guide for the drawer,
• The drawer being movable by means of the guide from a middle position into both a first pull-out position and a second pull-out position,
• Wherein the moving of the drawer from the center position to the first extension position along a first extension direction and wherein the movement of the drawer from the center position to the second extension position along a second extension direction,
• Wherein the second extension direction is opposite to the first extension direction, so that the first extension position and the second extension position are arranged on opposite sides of the heat therapy device,
• • where the drawer tilt protection device transmits a torque acting on the drawer directly to the bed frame, and
• • wherein the drawer tilt protection device prevents downward tilting of the drawer relative to the bed frame about an axis perpendicular to the extension directions.

In other words, the invention further relates to a patient bed assembly for a neonatal thermal therapy device, the patient bed assembly comprising a bed frame and a drawer, the bed frame having a drawer slide configured to move the drawer from a central retracted position in the bed frame along at least one extension direction of the guide to allow in an extended position of the drawer, and wherein the drawer can be removed from the guide. A drawer tilt protection device is provided which transmits a torque acting on the drawer directly to the bed frame and prevents downward tilting of the drawer relative to the bed frame about an axis perpendicular to the extension directions.

Preferably, a drawer centering device is also provided in this embodiment, which acts on the drawer in the central inserted position. The central inserted position is the middle position. In this way, the drawer can be reliably positioned in a defined position whereby further components of an incubator are not affected by a mispositioning of the drawer and when used for X-ray images reliable positioning of the X-ray cassette or the X-ray detector is possible and mis-recordings can be avoided.

Both for the first embodiment described above and for the patient bed assembly described above, it is conceivable that the drawer centering device has at least one drawer centering element.

Such a drawer centering element may for example be a mechanical element or else a magnetic element. A mechanical element may, for example, comprise one or more springs which act on the drawer directly or indirectly with a force. In this respect, a drawer centering element is characterized by the fact that it exerts a force on the drawer. It is also conceivable that the drawer centering device has a plurality of drawer centering elements.

For example, the drawer centering device has a first mechanical drawer centering element in the guide and a second mechanical drawer centering element in the drawer, which engage in a form-fitting manner in the central, inserted position of the drawer. This allows a simple execution of the drawer centering device in a mechanical manner.

It is also possible that the drawer centering device has a first magnetic drawer centering element in the guide and a second magnetic drawer centering element in the drawer, the magnetic forces between the first and second magnetic drawer centering elements loading the drawer into the central retracted position. This allows a contactless loading in the central inserted position.

In particular, the magnetic drawer centering elements can be inserted into recesses of plastic components of the bed frame and the drawer and the recesses can be closed with a lid and welded by ultrasonic welding, thereby enabling easy cleaning of the assembly. Alternatively, the magnetic drawer centering elements may be cast in or glued.

For example, the drawer and the bed frame may each have Endpositionselemente which define a fully extended position in the respective extension directions and block in the fully extended position further pulling out the drawer and / or act on the drawer in the fully extended position. This prevents unwanted falling out of the drawer or gives the user a haptic feedback when pulling out the drawer.

The Endpositionselemente may be formed as a mechanical stop elements and bear positively in the fully extended position against each other.

Preferably, a drawer removal device is provided which allows a release of the positive connection of the stop elements and a removal of the drawer from the bed frame. In this way, a targeted removal of the drawer is made possible, which, for example, the cleaning of the patient assembly can be facilitated.

Preferably, wherein the drawer has a first positioning mark, which is formed so that it coincides in the central inserted position of the drawer with a second positioning mark on the bed frame and / or on a component of the patient bed assembly belonging heat therapy device, in particular a side wall or side window. This allows a simple and reliable positioning of an X-ray cassette or an X-ray detector in the drawer relative to the position of the newborn on a lying surface of the patient bed assembly.

The invention further relates to a neonatal thermal therapy device having an incubator chamber and a patient bed assembly as described above.

Further features and advantages of the invention will become apparent from the following description and from the drawings to the reference. In the drawings show:

1 a partial sectional view of an incubator according to the invention;

2 a schematic view of the incubator 1 with adjusted bed frame position;

3 a perspective view of a bed frame and two horizontal rails of an incubator according to the invention;

4 a schematic view of a bed frame and two horizontal rails of an incubator according to the invention in a central position and withdrawn positions;

5 a method for taking out a bed frame in a tilt protection device according to a first embodiment;

6 a method for taking out a bed frame in a tilt protection device according to a second embodiment;

7 a method for taking out a bed frame in a tilt protection device according to a third embodiment;

8th a detail view of a tilt protection device according to a fourth embodiment;

9 a detail view of a tilt protection device according to a fifth embodiment;

10 a detail view of a tilt protection device according to a sixth embodiment;

11 a detail view of a tilt protection device according to a seventh embodiment;

12 a detail view of a centering device according to a first embodiment;

13 a detail view of a centering device according to a second embodiment;

14 a detail view of a centering device according to a third embodiment;

15 a detail view of a centering device according to a fourth embodiment;

16 a detail view of a drawer centering device according to a first embodiment;

17 a detail view of a drawer centering device according to a second embodiment;

18 a detail view of a drawer centering device according to a third embodiment;

19 a detail view of a drawer centering device according to a fourth embodiment;

20 a detail view of a drawer centering device according to a fifth embodiment;

21 a perspective view of a patient bed assembly according to the invention;

22 a detailed view of the patient bed assembly 22 with anti-tilt device and end stop; and

23 a schematic view of a patient bed assembly according to the invention with positioning markings.

The 1 and 2 show a heat therapy device 10 in the form of a hybrid device. The following is the heat therapy device 10 also as an incubator 10 designated. The heat therapy device 10 however, it can also be a closed incubator or an open bed of heat.

The incubator 10 includes an incubator chamber 12 , a patient bed assembly 14 inside the incubator chamber 12 and a storage device 16 for the patient bed assembly 14 ,

The incubator chamber 12 has side walls 18 with intervention openings 20 which can be opened to enter the incubator chamber 12 to grab. A hood 22 closes the incubator chamber 12 upwards. The hood 22 can be opened for open nursing. A heat lamp 24 is intended to warm the newborn in open care. However, a thermal therapy device according to the invention can also be designed in other ways, for example as a closed incubator without a hood to be opened.

The storage device 16 includes a height adjustment device 26 in the embodiment shown in the form of two telescopic lifting devices, and a first horizontal rail 28 in the area of a first end face of the incubator chamber 12 as well as a second horizontal rail 30 in the area of a second end face of the incubator chamber 12 , The height adjustment device 26 is formed to the height of the first and second horizontal rails 28 . 30 relative to the incubator chamber 12 and to the housing of the incubator 10 set individually. It may also be provided a different construction of the height adjustment device.

The patient bed assembly 14 includes a bed frame 32 , which is a first guide 34 and a second guide 36 for the horizontal rails, the horizontal rails 28 . 30 in the guides 34 . 36 are included.

The patient bed assembly 14 also includes a drawer 38 lying beneath a lying surface of the patient bed assembly 14 is arranged. The drawer serves, in particular, for receiving an X-ray cassette or an X-ray detector and thus makes it possible to record X-ray images of the newborn within the incubator chamber 12 ,

The patient bed assembly 14 further comprises a lying surface element (in 1 not shown), which through the bed frame 32 is supported, and a mattress (in 1 not shown) forming a bed for the newborn. The lying surface element and the mattress are preferably designed so that they absorb and scatter only small amounts of X-radiation in order to enable X-ray exposures with the lowest possible radiation dose. It is also possible that the lying surface element is formed integrally with the bed frame or integrally with the mattress.

2 shows the incubator 10 out 1 with differently adjusted height adjustment device 26 , Because the heights of horizontal rails 28 . 30 through the height adjustment device 26 can be adjusted individually, it is possible the patient bed assembly 14 on the one hand horizontally at different heights and on the other hand, as in 2 shown to position in different inclinations, with the horizontal rails 28 . 30 each be set in different heights. In this way, a flexible and versatile storage of the newborn and a comfortable implementation of care activities possible. In 2 became the drawer 38 for the sake of clarity not shown.

3 shows a perspective view of the two horizontal rails 28 . 30 and the patient bed assembly 14 with bed frame 32 and drawer 38 , The horizontal rails 28 . 30 are formed in the illustrated embodiment as a T-shaped carrier, each comprising a horizontal rail member and a central vertical support member. However, the horizontal rails may also be formed in other ways. For example, vertical support members may also be provided respectively at the ends of the horizontal rail members, the geometry of the guides 34 and 36 must be adjusted accordingly.

The bed frame 32 can be made up of one part or several parts.

The two guides 34 . 36 form a kind of hard-lot storage for the two horizontal rails 28 . 30 to the tilting of the bed frame 32 , as in 2 shown to enable. The first guide 34 for the first horizontal rail 28 forms a permanent camp, with the leadership 34 the rail 28 at least partially closely encloses and on the one hand a rotation about the axis of the rail 28 and on the other hand sliding on the rail in the direction of the axis of the rail 28 allows. At the outer ends of the guide 34 are each side walls of the bed frame 32 provided, in each of which a hole is formed, through which the horizontal rail element of the first rail 28 can pass through it.

The second guide 36 for the second horizontal rail 30 forms a floating bearing, the second guide 36 the inclusion of the second rail 28 in a variable distance range relative to the first guide 34 allows. In this way, the different distance of the horizontal rails 28 . 30 in the horizontal position of the bed frame 32 ( 1 ) and in oblique position of the bed frame 32 ( 2 ) are compensated. Analogous to the first guide 34 allows the second guide 36 on the one hand a rotation about the axis of the rail 30 and on the other hand sliding on the rail in the direction of the axis of the rail 30 allows. At the outer ends of the guide 36 are each side walls of the bed frame 32 provided, in each of which a slot is formed, through which the horizontal rail element of the second rail 30 can pass through it.

The guides 34 . 36 are thus designed so that they move the bed frame 32 from a central position in the incubator chamber 12 along a first extension direction of the horizontal rails 28 . 30 in an extended position of the bed frame 32 and a movement of the bed frame 32 from the central position in the incubator chamber 12 along a second extension direction of the horizontal rails opposite the first extension direction 28 . 30 in an extended position of the bed frame 32 enable.

By the construction of the first and second horizontal rails 28 . 30 as a T-shaped carrier can be the bed frame 32 thus can be easily pulled out to the position of the support element. The support element thus forms a stop and thus defines a maximum pulled-out position of the bed frame 32 in both directions.

The holes in the side walls of the bed frame 32 form in the 4 shown embodiment, a tilt protection device 40 which is a tilting of the bed frame 32 about an axis perpendicular to the horizontal rails 28 . 30 prevented both in the central position and in an extended position. In this way, a tilting of the bed frame 32 especially when loaded on the bed frame in the extended position prevented.

The anti-tilt device 40 forms with the two holes in the side walls of the bed frame 32 the two guides 34 . 36 a first undercut section 42 and a second undercut section 44 on, which are spaced apart in the extension direction and wherein in the central position both undercut sections 42 . 44 at least partially surround the associated horizontal rail in the vertical direction. These are in the in 4 the embodiment shown in the holes in the side walls to form the undercut sections 42 . 44 each reinforced tunnel-shaped. This allows the formation of an undercut in the central position of the bed frame 32 even with short horizontal rails 28 . 30 that are shorter than the length of the guides 34 . 36 of the bed frame 32 , In this way, a tilting of the bed frame 32 prevented in both the withdrawn positions and in the central position in a simple mechanical manner.

The possibility of the bed frame 32 to pull out of the central position allows a flexible and comfortable care of the newborn. Due to the bilateral extension directions of the incubator 10 be used flexibly.

4 shows in section (a) the bed frame 32 in its central position, with the drawer 38 partly from the bed frame 32 pulled out. A load of the drawer indicated by a vertical arrow 38 creates a torque on the patient bed assembly 14 with the bed frame 32 , Through the anti-tilt device 40 with the undercut sections 42 . 44 , which in the central position of the bed frame respectively the horizontal rails 28 . 30 grasp the torque on the horizontal rails 28 . 30 transferred and prevents tilting of the bed frame.

Section (b) of 4 shows the pulled out in the right direction of withdrawal bed frame 32 , wherein the first undercut section 42 the horizontal rails 28 . 30 encompasses and at a load the anti-tip device 40 prevents tilting.

Section (c) of 4 shows the pulled out in the left direction of extension bed frame 32 , where the second. Undercut section 44 the horizontal rails 28 . 30 encompasses and at a load the anti-tip device 40 prevents tilting.

The incubator 10 is designed to take out the bed frame 32 from the incubator chamber 12 in a vertical direction. In this way, the incubator, for example, easily disassembled and cleaned.

The removal of the bed frame 32 will be in the in 5 shown process steps shown. The first step is the bed frame 32 in its central position. The second step is the bed frame 32 pushed to the left until the horizontal rail 28 . 30 the area of the first undercut section 42 has left. The third step is the bed frame 32 raised to the left and pushed to the right in the fourth step until the horizontal rail 28 . 30 the area of the second undercut section 44 has left. The fifth step is the bed frame 32 raised to the right and can be removed from the incubator 12 be taken out. The mounting of the bed frame is done analogously in reverse order. Because the construction of the bed frame 32 and the rails 28 . 30 is symmetrical, the direction can also be reversed.

In the embodiment shown, these are the rails 28 . 30 and the bed frame 32 designed so that the bed frame can also be mounted rotated by 180 °, so that the the guide 36 on the rails 28 lies and the lead 34 on the rails 30 lies. In this way, the assembly is simplified, thus not on the orientation of the bed frame 32 must be respected.

6 shows a second embodiment of a tilt protection device 40 , where undercut sections 42 . 44 only through the holes of the guides 34 . 36 are formed in the side walls of the bed frame. To encompass the horizontal rails 28 . 30 through the first and second undercut sections 42 . 44 in the central position of the bed frame 32 to ensure are the horizontal rails 28 . 30 longer than the guides 34 . 36 of the bed frame 32 designed so that the rails 28 . 30 in the central position of the bed frame 32 through the side walls of the bed frame 32 protrude through (see step 1 in 6 ). The procedure for removal and installation of the bed frame 32 takes place analogously to the embodiment of 5 ,

7 shows a third embodiment of a tilt protection device 40 , wherein the two undercut sections 42 . 44 only at the second guide 36 are formed. The undercut sections 42 . 44 are designed so that the second rail 30 only in the inside area of the leadership 36 is grabbed while the rail 30 in the outside area of the leadership 36 not through the undercut sections 42 . 44 is encompassed.

In a first step in the removal procedure is the bed frame 32 placed in a horizontal position. The second step is the bed frame 32 on the side of the first guide 34 raised until the first rail 28 out of the lead 34 has arrived. In the third step, the bed frame becomes the side of the first guide 34 moved, leaving the second horizontal rail 30 in the second lead 36 in the outside area of the leadership 36 passes, creating the second rail 30 from the undercut sections 42 . 44 is released. Subsequently, in the fourth step, the bed frame 42 also on the side of the second leadership 36 be lifted and out of the incubator chamber 12 withdrawn become. The mounting of the bed frame 32 takes place analogously in reverse order.

8th shows a fourth embodiment of a tilt protection device 40 , In this embodiment, the two undercut portions 42 . 44 at the first guide 34 provided while at the second guide 36 no undercut sections are provided. The undercut sections 42 . 44 embrace the horizontal rail 28 only partially, allowing a removal and insertion of the horizontal rail 28 in one to the plane of the bed frame 32 vertical direction is not possible but only in the direction shown by the oblique arrow. Removal and installation of the bed frame 32 can therefore only in an oblique position of the bed frame 32 in the incubator chamber 12 done, for example, by lifting the bed frame 32 on the side of the second lead 36 and rotation of the bed frame 32 around the horizontal rail 28 ,

9 shows a fifth embodiment of a tilt protection device 40 , The horizontal rails 28 and or 30 each have an expansion device at their ends 46 which can be moved from a first, retracted position, see section (b), to a second, protruding position, see section (a), the length of the horizontal rails 28 . 30 in the extension direction in the second position of the expansion device 46 is greater than the length of the horizontal rails 28 . 30 in the extension direction in the first position of the expansion device 46 , In this way, the horizontal rails 28 . 30 for removing or mounting the bed frame 32 be shortened. Here are the expansion devices 46 in its second position through the holes of the side walls of the bed frame 32 so that the side walls each have the two undercut sections 42 and 44 form and thus a tilting of the bed frame 32 prevent.

In the first, retracted position of the expansion devices 46 form the side walls of the bed frame 32 no undercut sections in the central position 42 , and 44 and a removal or mounting of the bed frame in the vertical direction is possible.

10 shows a sixth embodiment of a tilt protection device 40 , To a tilting of the bed frame 32 at a load of the pulled out drawer 38 , see section (a) of 4 to prevent is a locking device in this embodiment 48 provided, which in an at least partially withdrawn position of the drawer 38 the horizontal rail 28 . 30 locked to a tilting of the bed frame 32 to prevent, and in an inserted position of the drawer, the horizontal rail 28 . 30 unlocked to take out the bed frame 32 from the incubator chamber 12 in a vertical direction.

In the in 10 the embodiment shown is the locking device 48 designed as two Z-shaped knee joint levers, each with a first end in a recess of the respective horizontal rail 28 . 30 can engage and with a second end against a trained as a cam surface of the drawer 38 are charged.

When the drawer is fully inserted 38 each of the second ends of the lever through the control cam of the drawer 38 positioned so that the levers rotate so that the respective first ends of the levers are the horizontal rails 28 . 30 release and the locking device 48 unlocked (section (b)).

Will the drawer 38 in one way or another out of the bed frame 32 pulled out, so are the second ends of the lever either free or through the control cam of the drawer 38 moved so that the levers rotate about a respective central axis of rotation and the first ends of the lever in the horizontal rails 28 . 30 engage and the locking device 48 is locked (sections (a) and (c)).

11 shows a seventh embodiment of a tilt protection device 40 with an alternative locking device 48 , The locking device 48 each comprises a locking element which forms an undercut at a first end, which is the horizontal rail 28 . 30 can engage around and with a second end on a trained as a cam surface of the drawer 38 is applied. The arrangement of the locking elements is analogous to the previous embodiment, for example.

There may also be four locking elements at each of the two ends of the guides 34 . 36 be arranged analogously to the four undercut portions of the preceding embodiments.

In section (a) is the locking device 48 when completely or partially pulled out drawer 38 shown, wherein the locking element in the direction of the arrow against the drawer 38 is acted upon and thus the first end of the locking element, the horizontal rail 28 . 30 embraces. The drawer 38 is analogous to the embodiment of 10 formed with a control cam, wherein in the position shown in section (a), the locking element is either exposed or at the recess of the control cam of the drawer 38 is applied.

In section (b) is the drawer 38 pushed in and moved the control cam of the drawer the locking element in the arrow direction, so that the first end of the locking element, the horizontal rail 28 . 30 releases.

The features of the various embodiments of the anti-tip device 40 In particular, they can also be combined with each other.

In the 12 to 15 are various embodiments of a centering device 50 provided, which the bed frame 32 placed in a central position to ensure reliable positioning of the bed frame 32 in the incubator chamber 12 to ensure. This will ensure that the pull-out bed frame 32 optimal in the incubator chamber 12 is positioned and, for example, the air supply openings of a heating device of the incubator not through the pull-out bed frame 32 be completely or partially covered.

In the embodiments of the 12 to 13 has the centering device 50 in each case a first mechanical centering element 52 in the lead 34 . 36 and a second mechanical centering element 54 in the horizontal rail 28 . 30 on, which interlock positively in the central position of the bed frame. Thus, in a simple mechanical way positioning of the bed frame 32 inside the incubator chamber 12 allows.

In 12 are the two mechanical centering elements 52 each by a chamfer in the end of the horizontal rails 28 . 30 and the guides 34 . 36 educated. In this way, the bed frame is acted upon by its own weight in the central position. In addition, facilitated by the bevel formed by the chamfer of the horizontal rails 28 . 30 the installation and removal of the bed frame 32 ,

13 shows an alternative embodiment of the centering device 50 in which the first mechanical centering elements 52 the guides 34 . 36 are formed by bead-shaped bulges and the second mechanical centering 54 in the horizontal rails 28 . 30 are formed by grooves, each perpendicular to the axis of the horizontal rails 28 . 30 run. Is the bed frame 32 in the area of the central position, the bed frame is acted upon by its own weight in the central position. Alternatively, the grooves in the guides 34 . 36 and the bulges in the rails 28 . 30 be educated.

14 shows a further embodiment of the centering device 50 in which the first mechanical centering elements 52 the guides 34 . 36 through perpendicular to the axis of the horizontal rails 28 . 30 extending grooves are formed and the second mechanical centering 54 in the horizontal rails 29 . 30 are formed by a spring-mounted ball. The ball can against the spring force in a recess in the horizontal rail 28 . 30 be pressed. Is the bed frame 32 in the central position, so the ball through the spring into the groove of the guide 34 . 36 pressed and applied to the bed frame 32 thus in its central position. By the formation of the second mechanical centering 54 As an elastic element, it is possible to move the bed frame without vertical movement along the horizontal rails 28 . 30 to move.

15 shows a further embodiment of the centering device 50 , wherein the centering device 50 a first magnetic centering element 56 in the lead 34 . 36 and a second magnetic centering element 58 in the rail 28 . 30 having. The magnetic forces between the first and second magnetic centering elements 56 . 58 apply the bed frame 32 in the central position. This allows a non-contact admission in the central position. In the embodiment shown, the magnetic centering elements 56 . 58 in the bed frame 32 and the rail 28 . 30 integrated, preferably molded in plastic, which in particular easy cleaning of the centering device 50 is possible. As magnetic centering elements 56 and 58 For example, two strong permanent magnets or a strong permanent magnet and a ferromagnetic or paramagnetic element may be provided.

The different features of the in the 12 to 14 shown embodiments of the centering device 50 can also be combined with each other in any way. Instead of the vertical arrangement of the centering elements shown in the figures, in particular for the first horizontal rail 28 and the first guide 34 a lateral arrangement of the centering be provided.

The following is the patient bed assembly 14 with the bed frame 32 and the drawer 38 based on 16 to 26 described. The bed frame 32 has a guide 60 for the drawer 38 on. The leadership 60 is designed to move the drawer 38 from a central inserted position in the bed frame 32 along a first extension direction of the guide 60 in an extended position of the drawer 38 to allow, and a movement of the drawer 38 from the central inserted position in the bed frame 32 along a second extension direction of the guide opposite the first extension direction 60 in an extended position of the drawer 38 to enable.

A drawer centering device 62 is provided which the drawer 38 acted upon in the central inserted position.

The drawer centering device 62 in the in 16 embodiment shown has two first magnetic drawer centering 64 in the lead 60 and two second magnetic drawer centering elements 66 in the drawer 38 on, wherein the magnetic forces between the first and second magnetic drawer centering elements 64 . 66 the drawer 38 act on the central inserted position. As magnetic drawer centering elements 64 and 66 For example, two strong permanent magnets or a strong permanent magnet and a ferromagnetic or paramagnetic element may be provided.

The magnetic drawer centering elements 66 and 64 are in the embodiment shown in recesses of plastic components of the bed frame 32 and the drawer 38 used and closed the recesses with a lid and welded by ultrasonic welding. Alternatively, the magnetic drawer centering elements 66 and 64 be poured or glued.

Basically, at least a first magnetic drawer centering element 64 and a second magnetic drawer centering element 66 sufficient, for example, in the middle of the drawer 38 can be arranged.

17 shows an alternative embodiment, in each of four first and four second magnetic drawer centering 64 . 66 are provided, each in the region of the outer ends of the guide 60 or the drawer 38 are arranged. In the central retracted position are the four pairs of magnetic drawer centering elements 64 . 66 opposite each other and attract each other and act on the drawer 38 in its central inserted position.

In the embodiment shown, the drawer centering elements 64 . 66 each also arranged so that they end position elements 68 form, which define a fully extended position in the respective extension directions and act on the drawer in the fully extended position, whereby the user is given a haptic feedback when pulling out that the drawer is in the fully extended position and further pulling the drawer 38 out of the bed frame 32 is taken out. In the embodiment shown are in the two fully withdrawn positions of the drawer 38 respectively the magnetic drawer centering elements 64 . 66 the opposite ends of drawer 38 and leadership 60 opposite and attract each other.

It is also possible to use the drawer centering elements 64 . 66 the two in 16 and 17 shown embodiments to combine with each other.

The 18 to 21 each show an embodiment of the drawer centering device 62 with a first mechanical drawer centering element 70 in the lead 60 and a second mechanical drawer centering element 72 in the drawer 38 which is in the central retracted position of the drawer 38 interlock positively.

In the in 18 the embodiment shown is the second mechanical drawer centering element 72 formed as a metal spring, which forms an elastic bulge, opposite to the guide 60 is elastically biased. The first mechanical drawer centering element 70 is as a correspondingly shaped groove in the guide 60 designed so that in the central retracted position of the drawer 38 the metal spring engages in the groove and thus acts on the drawer in its central inserted position.

Alternatively, the second mechanical drawer centering element 72 be integrally formed with the body of the drawer as an elastic plastic element, which analogous to the metal spring of 18 into a groove in the guide 60 engages and thus applied to the drawer in its central inserted position.

19 shows an alternative embodiment in which the second mechanical drawer centering element 72 an embedded in the wall of the drawer elastic member which forms a projection. The leadership 60 is formed so that the embedded elastic member in the extension direction is substantially free to move. The corresponding first drawer centering element 70 the leadership 60 indicates an approximation area in which the leadership 60 the wall of the drawer 38 approaches, so that the embedded elastic member with a corresponding movement of the drawer 38 is elastically deformed, and a groove in the middle of the approach area, wherein in the central retracted position of the drawer 38 the embedded elastic member lies in the groove. Thus, the user receives a haptic feedback before reaching the central inserted position, that the central inserted position will be reached soon.

20 shows a further embodiment in which the first mechanical drawer centering element 70 the leadership 60 is an elastically mounted, biased against the drawer ball and in the second mechanical drawer centering 72 a vertical groove in the wall of the drawer 38 is. The mode of operation is essentially analogous to the centering device 50 out 14 , As an alternative to a vertically extending groove, a hole or another depression may also be provided in the side wall of the drawer.

In the 21 to 23 is a drawer tilt protection device 74 the patient bed assembly 14 shown which one is tilting down the drawer 38 relative to the bed frame 32 prevented by an axis perpendicular to the extension directions.

To allow X-rays with the lowest possible radiation dose is over the interior of the drawer 38 for the X-ray cassette or for the X-ray detector a hole in the bed frame 32 intended. Thus, only the mattress with the lying surface and a possible support element for the mattress between the patient and the X-ray cassette or the X-ray detector is arranged. The support member may in particular of a different material than the rest of the bed frame 32 be made, this other material is preferably better permeable to X-rays, z. B. Carbon.

To tilt the drawer 38 , In particular, in a load in an extended state, and thus to prevent pressure against the mattress or the support member of the mattress are on the guide 60 in the upper area the drawer tilt protection device 74 in the form of sectional projections provided over the side walls of the drawer 38 are arranged, and thus one on the drawer 38 absorb applied torque, which increases the torque on the bed frame 32 is transmitted.

From the bed frame 32 the torque is transmitted through the anti-tilt device 40 the previous figures on the horizontal rails 28 . 30 and the housing of the incubator 10 transfer.

22 shows a further embodiment in which the drawer 38 and the bed frame 32 each end position elements 68 have, which define a fully extended position in the respective extension directions and in the fully extended position further pulling out of the drawer 38 To block.

The end position elements 68 are each as mechanical stop elements 76 trained and lie in the in 22 shown fully withdrawn position positively against each other. The stop elements 76 are each formed sawtooth. This allows a simple movement of the stop elements 76 over each other when the drawer 38 is moved in the direction of the oblique edge of the sawtooth. In the other direction, however, the abutting vertical surfaces block the movement.

In the embodiment shown is a drawer take-out device 78 provided, the release of the positive connection of the stop elements 76 and a removal of the drawer 38 out of the bed frame 32 allows. This allows easy assembly and disassembly of the drawer 38 in the bed frame 32 ,

In the embodiment shown, the drawer take-out device 78 through a recess 80 in the side wall of the drawer 38 as well as a rounding off 82 the drawer bottom together with the arrangement of the stop elements 76 educated. This allows a selective lifting of the drawer 38 in the fully extended position by a rotation of the drawer. The upper side wall of the bed frame 32 is doing in the indentation 80 added to the drawer. In this case, the stop element 76 the drawer raised so far that out of engagement with the stop element 76 of the bed frame 32 device and the drawer thus out of the bed frame 32 can be removed.

An insertion of the drawer 38 back to the bed frame 32 on the one hand can be done in reverse order, on the other hand, this is due to the sawtooth shape of the stop elements 76 without problem in another tilt position possible.

Alternatively, an end position element 68 be formed as an elastic element, for example, at the axial end of the side wall of the drawer and on the upper side wall of the bed frame 32 come to the plant. Advantageously, the end position element forms 68 on the one hand a mechanical stop element 76 and on the other hand, a drawer take-out device 78 by the end position element 68 is designed so flexible that it allows removal of the drawer at an increased effort and thus provides the user with a haptic feedback to the fully extended position. Another advantage of the elastic element 68 is a noise minimization when the end stop engages.

In order to allow optimal positioning of an X-ray cassette or an X-ray detector relative to lying on the mattress newborn and to avoid misuse, the drawer points 38 , as in 23 shown, a first positioning mark 84 on and the bed frame 32 a second positioning mark 86 , being in the central retracted position of the drawer 38 the first positioning mark 84 with the second positioning mark 86 matches. Alternatively or additionally, it is possible that the second position markings 86 on a sidewall 18 of the incubator are attached.

LIST OF REFERENCE NUMBERS

10

incubator

12

incubator

14

Patient bed assembly

16

storage device

18

Side wall

20

engagement opening

22

Hood

24

heating lamp

26

Height adjustment device

28

first horizontal rail

30

second horizontal rail

32

bed frame

34

first guide

36

second leadership

38

drawer

40

anti-tip

42

first undercut section

44

second undercut section

46

expansion device

48

locking device

50

centering

52

first mechanical centering element

54

second mechanical centering element

56

first magnetic centering element

58

second magnetic centering element

60

guide

62

Schubladenzentrierungsvorrichtung

64

first magnetic drawer centering element

66

second magnetic drawer centering element

68

Endpositionselemente

70

first mechanical drawer centering element

72

second mechanical drawer centering element

74

Schubladenkippschutzvorrichtung

76

stop elements

78

Drawer removal device

80

indentation

82

rounding off

84

first positioning mark

86

second positioning mark

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10062127 A1 [0006]
• DE 19916890 A1 [0006]

Claims (12)

Patient bed assembly for a neonatal thermal therapy device, wherein the patient bed assembly comprises a bed frame and a drawer, the bed frame having a guide for the drawer and the guide is adapted to allowing movement of the drawer from a central retracted position in the bed frame along a first extension direction of the guide to an extended position of the drawer, and to allow a movement of the drawer from the central retracted position in the bed frame along a second extension direction of the guide opposite the first extension direction into an extended position of the drawer, and wherein a drawer centering device is provided, which acts on the drawer in the central inserted position. The patient bed assembly of claim 1, wherein the drawer is removable from the guide and a drawer tilt protection device is provided which transmits a torque acting on the drawer directly to the bed frame and prevents downward tilting of the drawer relative to the bed frame about an axis perpendicular to the extension directions , Patient bed assembly for a neonatal thermal therapy device, wherein the patient bed assembly comprising a bed frame and a drawer, the bed frame having a drawer slide configured to permit movement of the drawer from a central retracted position in the bed frame along at least one withdrawal direction of the guide to an extended position of the drawer; and wherein the drawer can be removed from the guide and a drawer tilt protection device is provided which transmits a force acting on the drawer torque directly to the bed frame and prevents downward tilting of the drawer relative to the bed frame about an axis perpendicular to the extension directions. A patient bed assembly according to claim 3, wherein a drawer centering device is provided which urges the drawer into the central retracted position. The patient bed assembly according to claim 1, 2 or 4, wherein the drawer centering device comprises a first mechanical drawer centering member in the guide and a second mechanical drawer centering member in the drawer which positively intermesh in the central retracted position of the drawer. The patient bed assembly of claim 5, wherein the drawer centering device comprises a first magnetic drawer centering member in the guide and a second magnetic drawer centering member in the drawer, wherein the magnetic forces between the first and second magnetic drawer centering members urge the drawer into the central retracted position. A patient bed assembly according to any one of the preceding claims, wherein the drawer and the bed frame each have end position elements which define a fully extended position in the respective extension directions and block further withdrawal of the drawer in the fully extended position and / or bias the drawer to the fully extended position , The patient bed assembly according to claim 7, wherein the end position elements are formed as magnetic stop members, wherein the magnetic forces between the magnetic stop members act on the drawer in the fully extended position. Patient bed assembly according to claim 7, wherein the Endpositionselemente are designed as mechanical stop elements and bear positively in the fully extended position to each other. A patient bed assembly according to claim 9, wherein a drawer take-off device is provided which allows a release of the positive connection of the stop elements and a removal of the drawer from the bed frame. A patient bed assembly according to any one of the preceding claims, wherein the drawer has a first positioning mark adapted to coincide, in the central retracted position of the drawer, with a second positioning mark on the bed frame and / or on a component of a thermal therapy device associated with the patient bed assembly. A neonatal thermal therapy device having a patient bed assembly according to any one of the preceding claims.

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