EP0614636A1 - Anatomically designed mattress - Google Patents

Abstract

A mattress (10) consisting of a one-piece foam-plastic body has at its longitudinal-side faces (20, 22) mutually opposite regions (e-f-q, h-g-r) of higher compressive strength which serve as sitting regions and stabilise a sleeping position in the mattress centre. In addition, the mattress (10) comprises in its interior a region (26) of reduced compressive strength and thus provides a shoulder depression for sleeping in the lateral position. A profiled lying zone (28, 30) on the lying area (12) of the mattress (10) ensures good ventilation of the sleeping person. By a gradual increase in the mattress thickness from the hip-back support region (e-f-g-h) up to the transverse-side face (18) close to the feet, the circulation of the sleeping person is promoted. <IMAGE>

Description

The invention relates to an anatomically designed reclining mattress on the basis of a one-piece coherent foam body of generally flat cuboid shape with two main surfaces to be positioned essentially horizontally in the position of use, namely a bottom surface and an upper surface, furthermore with two essentially vertical in the position of use Transverse side surfaces, namely a transverse side surface close to the head and a transverse side surface close to the foot, and furthermore with two longitudinal side surfaces which are again essentially vertical in the position of use, the top surface - viewed in plan view - a hip-back support area, a shoulder support area, a head support area and one on both sides of a vertical longitudinal center plane Has leg-footrest area.

It is known to produce such mattresses for household beds and hospital beds from foam. It is also known to provide profiles and recesses in the foam body to control the contact behavior. For example, it is known to provide the top surface with a truncated pyramid profile field in order to ventilate the top surface occupied by a sleeper or a patient in a hospital. Furthermore, it is known to provide a cavity in the shoulder area within the foam body, in order in this way to obtain a reduced overall stiffness of the foam body in the area of the shoulder support surface, which proves to be advantageous, for example, when the sleeper or patient is lying on the top surface in a lateral position lies.

If one speaks above of a one-piece coherent foam body, this is not to say that the foam body must be homogeneous over its entire length, and is also not to say that the Foam body is made of the same material over its entire length and width. Furthermore, this is not to say that the foam body is obtained by a single foaming process. It should only be expressed by this statement that the foam body is connected over the entire surface - top surface and bottom surface - in such a way that it can and must be handled as a whole and that there are no gaps between successive adjacent subregions, as is the case, for example is the case with traditional three-part mattresses.

The invention has for its object to offer stabilized seating in the area of the longitudinal side surfaces of the mattress.

To achieve this object, it is proposed according to the invention that the pressure rigidity of the foam body in the hip-back support area increases from the vertical longitudinal center plane in the direction of the longitudinal side surfaces.

In the lying mattress according to the invention, where the foam body is stiffened sideways of the vertical longitudinal median plane near the vertical longitudinal side surfaces, there is the possibility of a stabilized sitting. This stabilized sitting in the respectively accessible longitudinal side area of the mattress proves to be advantageous, for example, when the mattress user wants to perform dressing operations while sitting on one longitudinal side surface of the mattress. Furthermore, the increased pressure rigidity near a long side surface makes it easier for the mattress user to get on and off the mattress. This is because the user can first sit in a relatively stable sitting position when getting into his bed near the respective long side surface lower and then make the transition to the lying position from this sitting position. The arrangement of stiffeners on both longitudinal side surfaces also ensures that the user inevitably finds a lying position between the two stiffeners, ie in the region of the vertical longitudinal center plane. Furthermore, the stiffeners provided in the region of the two longitudinal side surfaces stabilize the bed while sleeping in the region of the vertical longitudinal center plane, so that the risk of falling out of the bed is minimized if the body is displaced too much to one longitudinal side surface.

The arrangement of stiffeners in the area of the two longitudinal side surfaces also has the advantage that, regardless of the spatial assignment of the mattress or the bed frame equipped with the mattress, a seating area is available on the exposed longitudinal side surface.

Another advantage of stabilizing the mattress, i.e. The increased rigidity near the vertical longitudinal side surfaces and in the area of the hip-back support can also be seen in the fact that a seat for a visitor or reader is provided in the vicinity of the person lying down.

The mattress can be designed in such a way that a seat area adjoins a central hip-back support area located on both sides of the vertical longitudinal center plane to the two long side faces, the compressive rigidity of the foam body within the hip-back support central area being essentially constant and also in the seat areas in the is substantially constant, however, larger than in the central hip-back support area. Such an embodiment has the advantage that it is relatively easy to use conventional methods can be produced, for example, by providing edge recesses in a pre-formed foam body in the seating areas and then filling these edge recesses with appropriately shaped foam bodies of higher pressure rigidity, the connection being able to be effected by welding, gluing or the like. However, it should not be ruled out that the transition from the central hip-back support area to the vertical longitudinal side faces takes place continuously, for example by locally controlling the foaming conditions differently when the foam body is being foamed.

In particular, the possibility is considered that the seating areas are made with a foam different from the foam of the hip-backrest central area, which has greater compressive rigidity than the foam of the hip-backrest central area.

In order to prevent, at the same time, with optimal centering and stabilizing effects, pressure zones from being formed between the body of the person lying down and the more rigid seating areas, it is provided that the seating areas have the greatest approximation in a transverse plane parallel to the two transverse side surfaces and with increasing distance from this transverse plane to have a transverse side face near the head and a distance from the transverse side face near the foot that increases and increases as steadily as possible. In particular, a boundary curve has proven to be favorable, in which the boundaries between the central hip-back support area and the two seating areas run approximately along partial arcs which are convex towards the vertical longitudinal median plane, the centers of these partial arcs lying outside the respectively associated longitudinal side surface. If we are talking about circular arcs, the term circular arc should be understood in the sense of an edge- and corner-free border course, whereby the circular arcs also can be replaced by other similar geometric shapes, for example elliptical arches.

The location of the seating areas is important: these seating areas are preferably placed in such a way that with a mattress size of 100 cm x 200 cm, the seating areas, and their ends near the feet, are at a distance of approx. 75 cm to 85 cm from the transverse side surface near the feet, preferably approx 80 cm and their ends near the head to the transverse side surface near the head have a distance of approximately 65 cm to approximately 75 cm, preferably approximately 70 cm. This results in a length of the seating area of increased pressure rigidity of approximately 50 cm. This measure is sufficient to realize the possibilities mentioned above.

If dimensions are given here with reference to a basic mattress size of 100 cm x 200 cm, other basic dimensions of the mattress should not be excluded. The location of the seating area and the other geometrical sizes specified below then result simply from corresponding similarity designs.

The seating areas should have the smallest transverse distance from each other at the middle point of their respective longitudinal extent, which in the case of a basic mattress size of 200 cm × 100 cm is approximately approximately 55 cm to approximately 65 cm, preferably approximately 60 cm. It has been found that such a medium distance measure does not limit the comfort for the person lying down, but nevertheless fulfills the advantages of stabilized sitting and protection against falling out, as stated above.

Again, assuming a basic mattress size of 200 cm x 100 cm, the transverse plane of the seating areas, as close as possible to the transverse side surface near the foot, should be at a distance of approximately 100 cm to approximately 110 cm, preferably approximately 105 cm.

In terms of production technology, it is particularly favorable if the foam of the seating areas is different from the foam of the hip-back support area over the entire cuboid height, which is, for example, 12 cm, and is homogeneous and uniform in terms of material. In such a construction case, a simple cutting process with a cutting knife running perpendicular to the top surface can first cut out the seating area and then insert, for example, weld or glue in a suitable packing made of foam of higher stiffness.

If one takes into account the possibility of varying the pressure rigidity through controlled locally different foaming and curing conditions, then such a method can also be carried out most simply when the seating areas are materially uniform and essentially homogeneous over the entire height of the foam body.

The design according to the invention with seating areas close to the longitudinal side surfaces can advantageously be combined with a design in which the foam body has a lower compressive rigidity in at least a partial area of the shoulder support area than in a central hip-back support area and in a head support area. Such a design is known per se and has so far been carried out in such a way that the mentioned partial area of the shoulder rest area was designed with a cavity which was filled with air. As a result, the material supply in this area was reduced and, seen integrally, the compressive rigidity in this area was reduced. By reducing the pressure stiffness in the shoulder support area, the comfort increases in particular in the event that - according to a frequent sleeping behavior - the person lying on the side lies on the mattress and then with the respective one shoulder located below can penetrate into the stiffness-reduced shoulder support area. This possibility of the cavity in the shoulder support area is also considered in the case of the present invention in combination with the seating areas according to the invention. In addition, another previously unknown advantageous possibility is being considered, namely the possibility that in the shoulder rest area or at least in a part of the shoulder rest area the cavity formed by a recess is filled with a foam of less elastic stiffness or at least partly filled. In such a case, there is a resulting pressure stiffness in the shoulder support area or in its partial area, which results from the pressure stiffness of the mattress base and the foam insert and from the relative wall thicknesses of the same.

The preferred embodiment provides for the presence of the foam of lower elastic stiffness in the shoulder rest area, as mentioned above. The advantage of this alternative, for which independent protection is sought, compared to an embodiment in which a cavity is provided in the shoulder support area, is that even in the shoulder support area, despite the reduced compressive rigidity there, thanks to the foam insert of greater softness, an uncontrolled sinking in is avoided and instead occurs soft cushioned sinking is possible.

If we are talking here about a partial area of the shoulder support area, the following possibility is again considered in particular: The partial area of reduced compression rigidity does not extend over the entire width of the foam body between the opposing longitudinal side faces but only over a partial area between these longitudinal side faces, preferably over a partial area which is symmetrical with respect to the vertical longitudinal center plane. Then, in this partial area, a possibility of facilitated sinking of the shoulder has been created, but only in this partial area and not in the adjacent areas adjacent to this partial area, which are near the long side surfaces. This creates an additional centering effect.

The recess, which serves as an air space or as a receiving space for a softer foam, can basically be worked in from the bottom surface or from the top surface of the mattress. However, this has the disadvantage that one has to form a "blind hole" when producing this recess. This blind hole is difficult to make, especially if you use cutting technology. It is therefore preferred to make use of the possibility of creating an all-round closed hole in the shoulder area from the longitudinal side surface to the longitudinal side surface and introducing the foam of reduced pressure rigidity into this hole. If you want to limit the reduced pressure stiffness in the shoulder support area to a central area between the two long side surfaces, you can easily do so by measuring the length of the foam insert made of foam of lower pressure stiffness so that it only covers one Part of the cross dimension of the mattress extends. Then spaces remain open near the long side surfaces, which can easily be filled with the foam material that forms the rest of the mattress. In particular, slices can be cut from the material previously cut out to form the hole and the terminal parts of the through hole can be filled with these slices again. It is also easily conceivable that one is content with this technique to insert such disk bodies into the ends of the through hole and to weld or glue them there and to dispense with the insertion of the foam material of lower compressive rigidity in the central region of this hole.

According to a preferred method of production, the foam insert of lower compressive rigidity, the so-called soft insert, is inserted beforehand into the foam mold for the mattress body, so that it is completely or partially foamed during the subsequent foaming of the foamable material inserted into the mold.

With a mattress size of 200 cm x 100 cm, the distance of the shoulder support area, namely the distance of its end near the foot, from the transverse side surface near the foot should preferably be approximately 125 cm and the distance of the end of the shoulder support area near the head approx. 30 cm to approx. 40 cm, preferably approx. 35 cm from the transverse side surface close to the head These dimensions should be calculated from the boundaries of the shoulder receiving area, in which the reduced pressure rigidity begins or ends. The dimensions are again given a basic size of 200 cm x 100 cm of the mattress body and change for other basic dimensions of the mattress body according to corresponding similarity relationships.

If the shoulder area with lower compressive rigidity does not extend over the entire transverse extent of the foam body from the long side face to the long side face, the distance of this partial area from the long side faces should each be about 15 cm up to approx. 25 cm, preferably approx. 20 cm, again under the condition of a basic mattress size of 200 cm x 100 cm.

For manufacturing reasons, it is advantageous if the pressure rigidity of the foam body is essentially constant over the entire surface extent of the top surface or bottom surface, with the exception of any seat areas and any shoulder support area, i.e. is formed by a foam material with the same material composition and homogeneous structure. In such a case, it is then necessary to subsequently process the foam body, which is produced, for example, in a foaming mold, only where the seat areas and the shoulder support area are to be created.

For the same reason, it is advantageous in terms of production technology if the foam body is uniform in terms of material and structurally homogeneous over its entire height over the entire top surface or bottom surface, again with the exception of only any seating areas and a possible shoulder support area of lower compressive strength.

It is of great value for the durability and the ability to clean the foam body if it is made in one piece with an integral skin. Such an integral skin can easily be obtained during the production of the foam body by foaming foamable material and then curing within this mold by appropriate temperature control during the process. It should also be noted here that, with a corresponding boundary design between the foam body and any seating areas, the recesses for seating area bodies to be subsequently inserted can be obtained in a simple manner during the manufacture of the foam body can win by giving the longitudinal side walls of the shape corresponding indentations in the area of the seating areas to be won.

In order to ensure ventilation of the body of the person lying down, it is advisable to provide the top surface of the foam body with a profiling at least in the central hip-back support area, but also in at least part of the foot-leg support area and / or in at least part of the shoulder support area . Such profiling is known per se. It can also be formed in a known manner from a field of truncated pyramids.

According to a preferred embodiment of the invention, such a profiling is provided in an area of the top surface which is at a distance of approx. 10 cm from the transverse side surface near the foot and a distance of approx. 35 cm from the transverse side surface near the head and which is on the other hand from the has a distance of approx. 15 cm to approx. 25 cm, preferably approx. 20 cm, between the two longitudinal side surfaces, again under the condition of a basic mattress size of 200 cm × 100 cm.

The height of the foam body can be between approximately 8 cm and approximately 20 cm, preferably approximately 12 cm, depending on the compressive rigidity.

It is known to improve the blood circulation in hospitals or in the household under the foot of the person lying, for example in the ankle area, to place a pillow in order to raise the foot. Wedges are used instead of pillows. The consideration on which the use of pillows and wedges is based is that one should regularly refrain from using such pillows or wedges when lying down with normal blood circulation, so that such cushions or wedges are only provided as additional equipment if necessary.

It has now been recognized that a certain increase in the top surface area from the hip-back support area to the transverse side surface near the foot cannot hurt and that it is possible to dimension this increase in such a way that it is as digestible for healthy circulatory patients as for circulatory patients . Based on this knowledge, in deviation from previous practice, it is proposed that the top surface in the foot-leg support region, starting from the hip-rump support region, rise towards the transverse side surface near the foot, preferably at an angle, the tangent of which is approximately 1:80. This increase can extend over the entire width of the mattress, but can also be limited to a central region of the footrest region close to the longitudinal center plane.

The foam body can consist of synthetic foam, for example of polyurethane foam or of latex foam, or of a combination of the two. The Shore hardness of the foam can be varied within wide limits in accordance with the respective height of the foam body in order to produce a certain pressure stiffness, in order to adapt it to the particular stiffness requirement of the patient.

The foam body can be substantially completely enclosed by a substantially closed shell, the shell being shaped so that it adapts as easily as possible to the outer shape of the foam body and can therefore be covered as easily as possible without forming folds in the covered state. A zipper is recommended to close the cover at the point of insertion for the foam body or a Velcro fastener, which should extend over the entire length of at least one transverse side surface if possible.

The cover should be made of woven, knitted or tile-like textile material in order to make it as comfortable as possible. The lying properties of the mattress can be improved further in that the cover is designed as a two-layer quilted cover at least in the area of the top surface, both layers preferably again consisting of textile material of the type mentioned above. However, it is also conceivable to produce at least one of the layers from a moisture-impermeable material in order to take account of incontinence on the patient. In the case of a two-layer quilting construction, the topstitch cells can be filled with a natural fiber filling or with a washable synthetic fiber filling. Good washability of the filling and the covering material is particularly desirable with a view to avoiding allergies to house dust. The synthetic fiber fillings are particularly suitable for washing. On the other hand, natural fiber fillings provide effective moisture absorption and good air circulation.

It should also be added that the profiling on the upper surface of the mattress is particularly desirable with regard to so-called pressure ulcer symptoms, particularly in the case of older patients and those who are long-term.

The mattress according to the invention is excellently suitable for combination with so-called neck support pillows, which either have a trough in the central region of their transverse extension or tend to form troughs under the load of the head or neck of the person lying down due to the correspondingly reduced rigidity in this region.

By combining such a neck support, which can be fixed in position, with the seating areas provided according to one aspect of the invention, an alignment of the body of the person lying down can be achieved on both sides of the vertical longitudinal central plane, which has proven medically advantageous and also prevents the risk of falling out of the side of the bed .

Due to the combined presence of increased pressure rigidity on the side of the hip-back support area and / or the lower pressure rigidity in the shoulder support area and / or a neck support pillow, a position of the body of the person lying down is determined in which the body axis assumes a preferred position, in particular a straight position. In this position, the neck support pillow inevitably adjusts itself to a desired position transverse to the longitudinal axis of the body and can also be fixed if necessary.

• a) Der Schulterauflagezentralbereich verringerter Drucksteifigkeit grenzt in Längsrichtung an einen Hüft-Rückenauflagezentralbereich von im wesentlichen konstanter größerer Drucksteifigkeit an;
• b) an den Hüft-Rückenauflagezentralbereich grenzt, beschränkt auf die Länge des Hüft-Rückenauflagebereichs zu den Längsseitenflächen hin, je ein Sitzbereich von gegenüber der Drucksteifigkeit des Hüft-Rückenauflagezentralbereichs vergrößerter Drucksteifigkeit an, wobei die Quererstreckung der Sitzbereiche in einem mittleren Bereich ihrer Längserstreckung am größten ist, dort bezogen auf ein Matratzengrundmaß von 200 cm x 100 cm ca. 14 cm bis ca. 28 cm, vorzugsweise ca. 17,5 cm - ca. 22,5 cm beträgt und zu den beiden Enden der Längserstreckung der Sitzbereiche hin bogenförmig abnimmt.

According to a further aspect, the invention relates to an anatomically designed reclining mattress based on a one-piece coherent foam body of generally flat cuboid shape with two main surfaces to be positioned substantially horizontally in the position of use, namely an upper surface and a lower surface, furthermore with two in the Use position essentially vertical transverse side surfaces, namely a transverse side surface close to the head and a transverse side surface close to the foot and furthermore with two longitudinal side surfaces which are again essentially vertical in the position of use, the upper surface - viewed in plan view - a foot-leg support area and a hip-back support area on both sides of a vertical longitudinal center plane , has a shoulder support area and a head support area, the pressure rigidity of the foam body being different in different areas, and in fact relatively low in one shoulder support central area and relatively large in marginal areas near the long side. The following features are provided in combination in such a mattress:

• a) The central shoulder rest area of reduced compressive rigidity borders in the longitudinal direction on a central hip and back rest area of substantially constant greater compressive rigidity;
• b) adjacent to the central hip-backrest area, limited to the length of the hip-backrest area towards the longitudinal side surfaces, one seating area each with increased compressive rigidity compared to the compressive rigidity of the central hip-backrest area, the transverse extent of the seat areas being greatest in a central area of their longitudinal extent there, based on a basic mattress size of 200 cm x 100 cm, is approximately 14 cm to approximately 28 cm, preferably approximately 17.5 cm - approximately 22.5 cm, and decreases in an arc towards the two ends of the longitudinal extent of the seating areas .

Such a mattress has considerable advantages in use. A hollow cross forcing is avoided in the mattress according to the invention. At the same time, the seat areas stabilize the person lying down in the longitudinal central area, without - thanks to the arched design - the comfort of lying down being affected when approaching eccentric positions.

On the other hand, this arch-shaped design of the contour of the seating areas, which increases the comfort of the bed, allows the seating areas to be made relatively wide in their longitudinal centers without negative effects on the seating comfort, as expressed by the dimensions in feature b). This increases the seating comfort in the seating areas - again without influencing the lying comfort. This increase in seating comfort is further enhanced by the fact that in the entire hip-back support area there is a pressure stiffness that is lower than the pressure stiffness in the seat area, but still a pressure stiffness that is greater than in the central shoulder rest area. The seated person is thus still relatively stabilized even when the seat is eccentric with respect to the respective seating area.

Figur 1

eine perspektivische Darstellung einer erfindungsgemäßen Liegematratze;

Figur 2

eine Schnittdarstellung der Liegematratze zusammen mit einem Überzug entlang der Linie II-II in Pfeilrichtung II von Figur 1 gesehen;

Figur 3

eine Schnittdarstellung der Liegematratze zusammen mit einem Nackenstützkissen entlang der Linie III-III in Pfeilrichtung III von Figur 1 gesehen;

The accompanying figures explain the invention using an exemplary embodiment; it represents:

Figure 1

a perspective view of a mattress according to the invention;

Figure 2

a sectional view of the lying mattress seen together with a cover along the line II-II in the direction of arrow II of Figure 1;

Figure 3

a sectional view of the lying mattress seen together with a neck support pillow along the line III-III in the direction of arrow III of Figure 1;

In the figures, the mattress is generally designated 10. This mattress 10 has an upper surface 12, a lower surface 14, a transverse side surface 16 near the head, a transverse side surface 18 near the foot and two longitudinal side surfaces 20, 22. The top surface 12 is delimited by the points abcd. The following surface areas can be distinguished within the top surface 12:
a foot-leg support area aehd,
a hip-back support area efgh,
a shoulder rest area fijg,
a headrest area ibcj,
a central foot-leg rest area
a central hip-back support area lmno,
a central shoulder rest area,
a central headrest area svut,
a central area kstp,
a seating area efq,
a seating area hrg.

In all areas, with the exception of the areas e-f-q, h-r-g and m-s-t-n, the mattress over its entire height H is made of uniform foam, for example by introducing a foamable and then curable foam mixture into a foam mold.

A foam of greater hardness is provided in the areas efq and hgr over the entire height H, or in other words, the foam in the areas efq and hgr has a greater elastic compressive rigidity than the foam in the adjacent areas. The greater elastic pressure rigidity in the areas efq and hgr is achieved in that notches are already formed in the areas efq and hgr by foaming during the manufacture of the mattress body, or that after production of a fully cuboid mattress body in the Longitudinal side surfaces 20 and 22 cutouts are cut along the lines efq and hgr, which extend over the entire height H. Then, in the cutouts efq and hgr formed in this way, corresponding foam bodies made of the foam of higher elastic pressure rigidity are welded or glued.

The mattress body is symmetrical with respect to the longitudinal plane of symmetry 24.

A through hole is formed in the central shoulder support area m-s-t-n, which passes from the long side faces 20 to the long side faces 22. This hole can already be formed when the mattress body 10 is formed, but it can also be subsequently cut into the mattress body 10 continuously from the longitudinal side surfaces 20 to the longitudinal side surfaces 22. Within the central shoulder support area m-s-t-n, a foam filler body 26 is inserted into the hole thus formed, which has a lower elastic pressure rigidity than the other areas of the mattress body 10. The foam filler body 26 can pass from the long side faces 20 to the long side faces 22. However, it is preferably provided that the foam filler body 26 extends only over the width of the central shoulder support area m-s-t-n, and that the remaining lengths of the through hole are filled with further foam filler bodies which correspond in their elastic compressive rigidity to the elastic compressive rigidity of the rest of the mattress body 10.

It is also conceivable that a preformed body corresponding to the areas efq and hgr is inserted into a cuboidal foam shape, and optionally a foam filler 26 and then the rest Mattress body foams around these previously manufactured and inserted bodies.

It can be seen from FIG. 1 that seating areas are created in the areas e-f-q and h-g-r. These seating areas center the body of the person lying down, at least in the hip-back support area, on the central area l-m-n-o. In addition, when climbing onto the bed, the bed user can first sit with his buttocks on one of the seating areas e-f-q and h-g-r, and then take the lying position in the central area k-s-t-p by rotating it. Due to the greater elastic pressure rigidity in the areas e-f-q and h-g-r, a centering effect is also created insofar as the person lying in the central area creates a lying area laterally limited by the seating areas e-f-q and h-g-r, so that he cannot slide off the mattress and fall down. The formation of this lying valley is further supported by the fact that in the area m-s-t-n, due to the foam filler body 26 present there, with reduced elastic pressure rigidity, valley formation can also take place. This valley formation contributes to the centering effect. On the other hand, an improved adaptation to the body shape occurs when the patient is lying on the side, since the shoulder located below can be lowered into the area m-s-t-n.

In the central area kstp, the top surface 12 is designed with an array of truncated pyramid-shaped projections 28, the top surface of which is flush with the remaining top surface 12. Accordingly, furrows 30 are formed between the truncated-pyramid-shaped projections 28, which also provide ventilation under the body of the Enable lying people and protect the lying people, especially a long-term patient, from pressure ulcers.

A visitor or a reader can take a seat in the seating areas e-f-q and h-g-r and find a stable seating position there, thanks to the higher elastic pressure rigidity of the foam in these areas.

As can be seen from FIG. 2, the height of the mattress body 10 increases in the foot-leg support area a-e-h-d at an angle α from H to H ', the following applies to the angle α: tanα = approx. 1:80.

FIG. 2 further shows a multiplicity of holes 32 in the bottom surface 14. These holes originate from rods which are arranged in the foam mold on the bottom thereof in order to enable rapid and uniform supply of heat during the foaming and curing of the foam. Moreover, these pins can also be used to position these preformed foam bodies when inserting preformed foam bodies for the formation of the seating areas e-f-q and h-g-r. Furthermore, if necessary, they can also be used to position the foam filler body 26 if it is introduced in the preformed form into the foam form before the rest of the mattress body is formed.

Figure 2 also shows that the mattress is enclosed by a cover 34, which is designed in the area of the top surface 12 as a two-layer quilt cover with cushioning filler material in the individual quilting cells 36 and has a Velcro fastener or zipper 38 in the area of the transverse side surface 16 near the head . This hook-and-loop fastener or zip fastener 38 preferably extends over at least two, preferably over three of the four longitudinal and transverse side surfaces 20, 22, 16, 18, in order to facilitate the insertion of the mattress body 10 into the cover and to adapt the cover to the mattress body as accurately as possible 10 to be able to make.

The layers forming the cover 34 quilted on the top surface 12 can be textile webs. However, they can also be impermeable to water in order to protect the mattress and the filling material of the step cells 36 against the penetration of liquid.

FIG. 3 shows a neck support pillow 40, which is laid in the area s-v-u-t of FIG. 1 and is optionally centered by means of Velcro fasteners or the like. This neck support pillow 40 is designed by shape or by lower elastic pressure rigidity in the area of the longitudinal plane of symmetry 24 so that it forms an indentation 42 under the pressure of the neck or the head of the person lying down, which serves for convenience on the one hand but also for achieving a centering effect .

This centering effect also results in a right angle of the sleeper to the position of the neck support pillow. A defined indentation and the compression hardness of the neck support pillow only relieve the strain on the postural apparatus (ligaments and muscles) in the neck / shoulder area in this right-angled position.

In the figures, given the basic dimensions of the mattress body 10 of 200 cm x 100 cm x 12 cm, the dimensions x₁ to x₇ are drawn. These dimensions are shown in the table below. Figure according to drawing general measure preferred measure x₁ approx. 195 cm - approx. 205 cm approx. 200 cm x₂ approx. 95 cm - approx. 105 cm approx. 100 cm x₃ approx. 75 cm - approx. 85 cm approx. 80 cm x₄ approx. 45 cm - approx. 55 cm approx. 50 cm x₅ approx. 30 cm - approx. 40 cm approx. 35 cm x₆ approx. 5 cm - approx. 15 cm approx. 10 cm x₇ approx. 15 cm - approx. 25 cm approx. 20 cm

In other dimensions of the basic dimensions x₁, x₂ and H, the other dimensions change according to similarity relationships.

Claims (32)

Anatomically designed reclining mattress (10) on the basis of a one-piece coherent foam body of generally flat cuboid shape with two main surfaces to be positioned essentially horizontally in the position of use, namely an upper surface (12) and a lower surface (14), also with two in in the position of use essentially vertical transverse side surfaces namely a transverse side surface (16) close to the head and a transverse side surface (18) close to the foot and furthermore with two longitudinal side surfaces (20, 22) which are again substantially vertical in the position of use, the top surface (12) - viewed in plan view - has a foot and leg support area (aehd), a hip and back support area (efgh), a shoulder support area (fijg) and a head support area (ibcj) on both sides of a vertical longitudinal center plane (24),
characterized in that
the pressure rigidity of the foam body in the hip-back support area (efgh) increases from the vertical longitudinal center plane (24) towards the longitudinal side surfaces (20, 22). Reclining mattress according to claim 1,
characterized in that
a seat area (efq, hrg) adjoins a central hip-back support area (lmno) on both sides of the median longitudinal plane (24) towards the two long side faces (20, 22), the compressive rigidity of the foam body within the central hip-back support area (lmno) essentially is constant and also essentially constant in the seating areas (efq, hrg), but is larger than in the central hip-back support area (lmno). Reclining mattress according to claim 2,
characterized in that
the seating areas (efq, hrg) are made with a foam different from the foam of the central hip-back support area (lmno), which has greater compressive rigidity than the foam of the central hip-back support area (lmno). Reclining mattress according to claim 3,
characterized in that
the foam of the seating areas (efq, hrg) over the entire cuboid height is different from the foam of the central hip-backrest area (lmno). Reclining mattress according to one of claims 2 to 4,
characterized in that
the seating areas (efq, hrg) in a transverse plane (rq) parallel to the two transverse side surfaces (16, 18) have the greatest approximation and with increasing distance from this transverse plane (rq) to the transverse side surface (16) close to the head and to the transverse side surface (18) close to the foot have increasing distance from each other. Reclining mattress according to claim 5,
characterized in that
the boundaries between the central hip backrest area (lmno) and the two seating areas (efq, hrg) run approximately along arcs of a circle which are convex towards the vertical longitudinal median plane (24), the centers of these arcs of circle outside the respectively associated longitudinal side surface (20, 22 ) lie. Reclining mattress according to one of claims 2 to 6,
characterized in that
with a mattress size of 100 cm x 200 cm, the seating areas (efq, hrg) to the transverse side surface (18) near the foot a distance of approx. 75 cm to approx. 85 cm, preferably approx. 80 cm and to the transverse side surface (16) close to the head Have a distance of approx. 65 cm to approx. 75 cm, preferably 70 cm, geometrically similar solutions should be included in other mattress dimensions. Mattress according to claim 7,
characterized in that
the seating areas (efq, hrg) in the transverse plane (rq) of the greatest approximation are at a distance of approximately 55 cm to approximately 65 cm, preferably approximately 60 cm, with geometrically similar solutions being included in other mattress dimensions. Mattress according to claim 8,
characterized in that
the transverse plane (rq) of the closest approximation of the seating areas (efq, hrg) from the transverse side surface (18) close to the foot has a distance of approximately 100 cm to approximately 110 cm, preferably approximately 105 cm, with geometrically similar solutions should be included with other mattress dimensions. Lying mattress (10) on the basis of a one-piece connected foam body of generally flat cuboid shape with two main surfaces to be positioned essentially horizontally in the use position, namely an upper surface (12) and a lower surface (14), furthermore with two in the use position essentially vertical transverse side surfaces namely a transverse side surface (16) close to the head and a transverse side surface (18) close to the foot, and furthermore with two longitudinal side surfaces (20, 22) which are again essentially vertical in the position of use, the top surface (12) - viewed in plan view - on both sides of one vertical longitudinal center plane (24) has a foot-leg support area (aehd), a hip-back support area (efgh), a shoulder support area (fijg) and a head support area (ibcj), in particular according to one of claims 1 to 9,
characterized in that
the foam body has at least a partial area of the shoulder support area (fijg) less compressive rigidity than in the hip-back support area (efgh) and in the head support area (ibcj). Mattress according to claim 10,
characterized in that
the partial area (mstn) of the shoulder support area (fijg) is set approximately to the width of the central hip-back support area (lmno). Reclining mattress according to claim 10 and 11,
characterized in that
the lower pressure rigidity of the shoulder support area (fijg) is obtained through a recess in the foam body. Reclining mattress according to claim 12,
characterized in that
the recess is designed as an air-filled cavity. Reclining mattress according to claim 12,
characterized in that
the recess is at least partially filled with a foam of reduced pressure rigidity. Reclining mattress according to claim 14,
characterized in that
the recess between the two longitudinal side surfaces (20, 22) passes through and is filled in a central partial region (26) with foam of lower compressive rigidity, but in the longitudinal side surfaces (20, 22) adjacent end regions with a foam of higher compressive rigidity, in particular with a foam whose compressive rigidity Compressive rigidity of the foam in the central hip backrest area (lmno) and the headrest area (ibcj) corresponds. Mattresses according to one of claims 10 to 16,
characterized in that
with a mattress size of 100 cm x 200 cm the distance of the shoulder support area (fijg) from the transverse side surface near the foot (18) approx. 125 cm to approx. 135 cm preferably approx. 130 cm and the distance of the shoulder support area (fijg) from the cross side surface close to the head ( 16) approx. 30 cm to about 40 cm is preferably about 35 cm, with geometrically similar solutions should be included in other mattress dimensions. Mattress according to claim 16,
characterized in that
the distance of the partial area (26) of the shoulder support area (fijg), which is designed with lower compressive rigidity, from the longitudinal side surfaces (20, 22) is in each case approximately 15 cm to approximately 25 cm, preferably approximately 20 cm, with geometrically similar solutions being included in other mattress dimensions should. Reclining mattress according to one of claims 1 to 17,
characterized in that
the pressure rigidity of the foam body is essentially constant over the entire area of the main areas, with the exception of any seat areas (efq, hrg) and any shoulder support area (fijg). Reclining mattress according to one of claims 1 to 18,
characterized in that
the foam body is essentially homogeneous over its entire height over the entire area of the main areas (12, 14), possibly with the exception of seating areas (efq, hrg) and a shoulder support area (fijg). Reclining mattress according to one of claims 1 to 19,
characterized in that
the foam body is provided with an integral skin. Reclining mattress according to one of claims 1 to 20,
characterized in that
the top surface (12) of the foam body at least in the central hip-back support area (Imno), but preferably also in at least a part (klop) of the foot-leg support area (aehd) and / or in at least a part (mstn) of the shoulder support area (fijg) a profile (28,30) is provided. Mattress according to claim 21,
characterized in that
the profiling (28, 30) is designed as a field of adjacent truncated pyramids (28). Reclining mattress according to one of claims 1 to 22,
characterized in that
the height (H) of the foam body is approximately 10-16 cm, preferably approximately 12-14 cm. Lying mattress (10) on the basis of a one-piece connected foam body of generally flat cuboid shape with two main surfaces to be positioned essentially horizontally in the use position, namely an upper surface (12) and a lower surface (14), furthermore with two in the use position essentially vertical transverse side surfaces namely a transverse side surface (16) close to the head and a transverse side surface (18) close to the foot, and furthermore with two longitudinal side surfaces (20, 22) which are again essentially vertical in the position of use, the top surface (12) - viewed in plan view - on both sides of one vertical longitudinal median plane (24) a foot-leg support area (aehd), a hip-back support area (efgh), a shoulder support area (fijg) and one Headrest area (ibcj), in particular according to one of claims 1 to 23,
characterized in that
the top surface (12) in the foot-leg support area (aehd) rises from the hip-back support area (efgh) towards the transverse side surface (18) near the foot. Mattress according to claim 24,
characterized in that
the tangent of the rise angle (α) is approximately 1:80. Reclining mattress according to one of claims 1 to 25,
characterized in that
the foam body is made of synthetic foam or latex foam or a combination of synthetic foam and latex foam. Reclining mattress according to one of claims 1 to 26,
characterized in that
the foam body is essentially completely enclosed by a sheath (34). Reclining mattress according to claim 27,
characterized in that
the sleeve (34) is provided with a zipper (38) or Velcro (38). Mattress 10 according to claim 27 or 28,
characterized in that
the cover (34) is a two-layer quilted cover which contains a natural fiber filling or a washable synthetic fiber filling in its stitching cells (36). Reclining mattress according to one of claims 27 to 29,
characterized in that
the sheath (34) is moisture-impermeable, at least in the hip region Lying mattress 10 according to one of claims 1 to 30 in combination with a pillow (40) in the headrest area (ibcj), this pillow (28) being essentially symmetrical on both sides of the vertical longitudinal center plane (24) and a depression () in a central area of its transverse extent. 42) and / or has a region (42) of pressure rigidity which is reduced compared to regions adjoining on the side. Anatomically designed reclining mattress (10) on the basis of a one-piece coherent foam body of generally flat cuboid shape with two main surfaces to be positioned essentially horizontally in the position of use, namely an upper surface (12) and a lower surface (14), also with two in the use position essentially vertical transverse side surfaces, namely a transverse side surface close to the head (16) and a transverse side surface close to the foot (18) and furthermore with two longitudinal side surfaces (20, 22) which are again essentially vertical in the use position, the top surface (12) - in plan view viewed - has a foot and leg support area (aehd), a hip and back support area (efgh), a shoulder support area (fijg) and a head support area (ibcj) on both sides of a vertical longitudinal center plane (24), wherein the compressive rigidity of the foam body is different in different areas, namely relatively low in a central shoulder rest area (mstn) and relatively high in edge areas near the side surface, in particular according to one of claims 1 to 31, characterized by the combination of the features a) the central shoulder rest area (mstn) of reduced compressive rigidity adjoins in the longitudinal direction a central hip and back rest area (lmno) of substantially constant greater compressive rigidity; b) adjacent to the central hip-backrest area (lmno), limited to the length (ef, hg) of the hip-backrest area (efgh) to the longitudinal side surfaces (20, 22), one seating area (efq, hgr) each opposite the pressure rigidity of the central hip-backrest area (lmno) with increased pressure rigidity, the transverse extent of the seat areas (efq, hgr) being greatest in a central area of their longitudinal extent (ef, hg), there based on a basic mattress size of 200 cm x 100 cm approx. 14 cm to approx. 28 cm, preferably approx. 17.5 cm - approx. 22.5 cm and decreases in an arc towards the two ends of the longitudinal extent of the seating areas (efq, hgr).

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