EP1683448B1 - Kindermatraze - Google Patents

Kindermatraze Download PDF

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Publication number
EP1683448B1
EP1683448B1 EP06250127A EP06250127A EP1683448B1 EP 1683448 B1 EP1683448 B1 EP 1683448B1 EP 06250127 A EP06250127 A EP 06250127A EP 06250127 A EP06250127 A EP 06250127A EP 1683448 B1 EP1683448 B1 EP 1683448B1
Authority
EP
European Patent Office
Prior art keywords
foam
layers
layer
mattress
infant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP06250127A
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English (en)
French (fr)
Other versions
EP1683448A1 (de
Inventor
Paul C. Daly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datex Ohmeda Inc
Original Assignee
Datex Ohmeda Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datex Ohmeda Inc filed Critical Datex Ohmeda Inc
Publication of EP1683448A1 publication Critical patent/EP1683448A1/de
Application granted granted Critical
Publication of EP1683448B1 publication Critical patent/EP1683448B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/148—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays of different resilience

Definitions

  • the present invention relates to a mattress, and, more particularly, to a comfortable mattress for underlying an infant.
  • an infant mattress that underlies the infant for support and comfort of that infant.
  • an infant mattress there are, of course, a number of requirements for an infant mattress, that is, it must not only be comfortable and support the infant, but it also needs to be relatively easy to manufacture in order to be commercially viable and also preferably should be anti-microbial.
  • the mattress should have a support surface that is developmentally friendly and have as few as possible pressure points.
  • many of the existing infant mattresses develop pressure points in certain areas of the body of the infant in contact with the mattress because the mattress does not conform to the body uniformly in distributing the weight of the patient. The pressure points result in discomfort and may produce skin ulcers.
  • many users of such mattresses use secondary developmentally friendly materials to reduce the pressure points with such mattresses.
  • the normal mattress also should have a cover that is cleanable and comprised of an anti-microbial, non-toxic material for the safety of the infant and be cleanable with all of the normal hospital disinfectants and should be liquid resistant and not be permeable to liquid or absorb liquid.
  • GB-22400000 describes a mattress formed of a central open cell plastics foamed layer, having a foam density of 33-40 kg/m 3 and outer open cell plastics foamed layers having a density of 27-32kg/m 3 .
  • the foamed material may be a modified polyurethane.
  • the foam layers are adhered together at their interfaces by neoprene adhesive.
  • the foam layers may be enclosed in a cover.
  • the present invention provides an infant mattress that is comprised of a material that is inherently designed to disperse pressure points and evenly distribute the pressure load over a large area of the mattress thereby being a good, developmentally friendly mattress.
  • a foam material there are a plurality of layers of a foam material, that is, there is an inner foam layer comprised of an open or closed cell foam, e.g. urethane foam, and with two outer foam layers comprised of a visco-elastic foam material, which also may be a urethane foam.
  • the outer foam layers sandwich the inner foam layer therebetween.
  • the outer foam layers are mechanically captured and retained to the inner foam layer.
  • the adhesive can be in the form of a stripe of adhesive applied only around the outer periphery of the mating surfaces of the inner foam layer and the outer foam layers, thereby leaving a large center area of the mating surfaces having no adhesive at all.
  • the outer foam layers are of a visco-elastic material whereby the foam recovers very slowly from an indentation that is made by a body pressed into the visco-elastic material.
  • the outer foam layer will more evenly distribute the weight of the infant over the mattress and avoid pressure points.
  • the density of the outer foam layers can be in the range of about 1.0 to about 5.0 pounds per cubic foot (16 to 80 kg per cubic metre) with a preferred density of about 3.0 pounds per cubic foot (48 kg per cubic metre) .
  • the inner foam layer is an open or closed cell foam that has a faster memory such that the material returns rapidly to its original configuration when a body causing an indentation has been removed.
  • the combination of the two outer foam layers having a slow to recover material with the inner foam layer having a more rapid recovery rate brings about the particularly desirable properties of the present mattress.
  • the density of the inner foam layer can be in the range of about 1.0 to about 3.0 pounds per cubic foot (16 to 48 kg per cubic metre) and preferably may have a density of about 1.7 pounds per cubic foot (27 kg per cubic metre).
  • the outer foam layers have a higher density than the inner foam layer
  • the outer foam layers give more easily than the inner foam layer, the reason being that the outer foam layers are made of the visco-elastic material while the inner foam layer is made of the open or closed cell foam that is actually stiffer, and gives less easily, than the outer foam layer but is a less dense foam material. Accordingly, while the various foam layers can be described by means of their densities, those densities are not indicative of the give or firmness of the foam layers themselves where the different foam layers are or are not visco-elastic.
  • the shape of the mattress is rectangular, with the shorter of the opposite sides being rounded and with the adhesive stripe that is between about 0.25 and 2.5 inches (0.6 to 6.3 cm) in width, preferable about one inch (2.5 cm), surrounding the outer periphery of the mattress.
  • the mattress may have other shapes and the adhesive stripe may only extend substantially around the outer perimeter of the mattress.
  • the important feature of the particular affixation of the outer foam layers to the inner foam layer is that with the use of the perimeter adhesive stripe, the abutting inner areas of the various foam layers are free from any adhesive and, therefore, movement is allowed between the various layers of the foam material inwardly of the adhesive stripe.
  • micro-convolutes that are formed on the interior surfaces of the outer foam layers so as to extend inwardly to contact both surfaces of the inner foam layer. As such, the micro-convolutes actually contact the surfaces of the inner foam layer in sandwiching the inner foam layer between the outer foam layers.
  • an outer cover the surrounds and encloses the three foam layers and that outer cover is comprised of a material that is anti-microbial, cleanable and non-toxic so as to not harm an infant positioned thereon as well as liquid resistant.
  • the means of securing the outer cover to the layers of foam material can be by a stitching, RF or HF welding, zippering, Velcro fastening system or any other suitable means.
  • the outer cover may be removable for cleaning and can have one side openable so as to facilitate the insertion and removal of the foam layers therefrom.
  • the outer cover preferable surrounds the three foam layers or composite foam structure with sufficient clearance around the outer perimeter of the foam layers in order to allow the foam layers to expand when the infant is placed thereon and the expanding perimeter is not restrained by the dimensions of the outer cover.
  • the layers of foam can freely expand under the deformation imposed by the infant so as to avoid a hammock effect where that expanding perimeter of the foam layers is hampered or restrained by the outer cover.
  • FIG. 1 there is shown a side, exploded view of the various components that make up the present mattress.
  • an inner foam layer 10 and a pair of outer foam layers 12 that basically sandwich the inner foam layer 10 therebetween when the mattress is assembled.
  • the materials of the inner and outer foam layers 10, 12 are specially selected to achieve the overall benefit of the mattress of this invention.
  • the inner foam layer 10 is an open or closed cell, elastomeric foam, such as urethane, that is relatively stiffer or less resilient than the outer foam layers 12 and can be comprised of a foam such as North Carolina Foam Ultra Cell UC-17, having a density of about 1.7 pounds per cubic foot (27 kg per cubic metre), a resilience (% rebound) of 59-66 and a total thickness of about 0.75 inches (1.9cm).
  • the range of thicknesses for the inner foam layer 10 can be from about 0.25 inches (0.6 cm) to about 1.0 inch (2.5cm) for suitability as an infant mattress, however, it can be understood that different thicknesses would be expected based upon different uses of the present mattress.
  • Other parameters of the inner foam layer 10 include a specific gravity of 0.015 - 0.08 and insolubility in water. In essence, the inner foam layer 10, being less resilient that the outer foam layers 12, acts as a box spring where there is give and firmness at the same time.
  • foams having different densities can be used with the present invention and generally include densities that may be within the range of about 1.0 to about 3.0 pounds per cubic foot (16 to 48 kg per cubic metre).
  • the outer layers 12 are each comprised of the same material and thickness and therefore provides the advantage that the caregiver can position the mattress of the present invention with either side facing upwardly and be assured that the conditions and flexibility of the mattress are the same for the infant in either orientation.
  • One foam material that has been found applicable for the outer foam layers 12 is North Carolina Foam Convoluted AVE3010, having a density of 3.0 +/- 0.20 pounds per cubic foot (48 ⁇ 0.3 kg per cubic metre) and a resilience (% rebound) of 8-16.
  • the thickness of the outer foam layers 12 for an infant mattress can be about 0.5 inches (1.3cm) with a range of 0.25 to 0.75 inches (0.6 to 1.9cm) applicable, however, as stated, the actual dimensions would depend on the particular application for the mattress.
  • the material herein described as usable for the outer foam layer 12 is a visco-elastic foam, and may be urethane, having a specific gravity of 0.015 - 0.08 and be insoluble in water.
  • micro-convolutes 14 formed on the interior surfaces 16 of each of the outer foam layers 12.
  • the micro-convolutes 14 can be conical in shape and taper inwardly in the direction of the inner foam layer 10 and act as tiny springs that allow the infant's weight to be dispersed more evenly over the surface on which the infant is positioned.
  • the exterior surfaces 18 of the outer foam layers 12 are smooth to the infant.
  • the use of micro-convolutes can be eliminated such that the interior surfaces 16 of the outer foam layers may be flat, relatively planar surfaces.
  • FIG. 2 taken along with Fig. 1 , there is shown a top view illustrating an outer foam layer 12 enclosing an inner foam layer 10.
  • an adhesive stripe 20 that is placed on the interior surface 16 of the outer foam layer 12, or alternatively, on the exterior surface 17 of the inner foam layer 10 and the adhesive stripe 20 surrounds the peripheral edge or perimeter of the outer foam layer 12.
  • the adhesive stripe 20 surrounds the entire perimeter of the outer foam layer 12, however, it is understood that the adhesive stripe 20 may only be placed substantially around the perimeter of the outer foam layer 12.
  • the adhesive stripe 18 is preferably from about 0.25 inches (0.6cm) to about 2.5 inches (6.4 cm) in width and, more preferably, about 1 inch (2.5cm) in width and can be sprayed on to the appropriate surface or applied by other means.
  • the interior surface 16 of the outer foam layer 12 and the corresponding interior facing surface of the inner foam layer 10 are free from any adhesive and, therefore, there is movement that is allowed between the inner and outer foam layers 10, 12 inwardly of the adhesive stripe 20.
  • the interior portions 21 of the foam layers have no adhesive, thereby allowing the foam layers to react to the weight load of the infant being exerted thereon without being bound by any other mechanical means except for surface contact friction.
  • an adhesive stripe is to mechanically retain the outer foam layers 12 to the inner foam layer 10 however other means may be used to mechanically retain the foam layers together such as stitching, Velcro fastening system or other mechanical means. In a further embodiment, there may be no mechanical retaining means between the outer layers and the inner layer.
  • Fig. 3 there is shown a side view of the completed assembly of the composite foam structure comprising the three foam layers made up of the inner foam layer 10 and the two outer foam layers 12 sandwiching the inner foam layer 10 therebetween.
  • Fig. 4 there is shown a perspective view of the present infant mattress illustrating the outer cover 22 that encloses the three foam layers shown in Fig 3 .
  • the outer cover 22 is intended to enclose the composite foam structure made up of the three foam layers of Fig. 3 in forming the eventual mattress.
  • One suitable material for the outer cover 22 is Dartex P091 Polyamide fabric (polyurethane transfer coating on a weft knitted fabric) and is chosen for its properties of being washable, dry cleanable, and is capable of being HF welded. Other comparable material can, of course, be used for the outer cover 22.
  • the material for the outer cover 22 should also be non-toxic and anti-microbial so as to be safe for the contact with an infant and therefore be skin friendly or irritation free and can be coated with an anti-fungal and antibacterial coating.
  • the outer cover 22 be a loose fit surrounding those foam layers, that is, the outer cover 22 should be fabricated and dimensioned so that the outer cover 22 is not tight around the inner and outer foam layers 10, 12 enclosed therein.
  • the dimensions of the outer cover 22 are such that there is a sufficient space surrounding the outer perimeter of the foam layers 10, 12 such that the outer cover 22 is not taut on the surface and act like a hammock when the infant is placed on the mattress.
  • the looseness of the outer cover 22 allows the foam layers 10, 12 to perform the function of weight distribution and elimination of pressure points without the outer cover 22 causing any considerable effect on the intended performance.
  • the outer cover 22 should be sufficiently loosely fitted over the foam layers 10, 12 such that when the infant is placed on the mattress, the normal expansion of the perimeter dimensions of the foam layers 10, 12 due to the depression created by the weight of the infant will not be constrained by the outer cover 22 such normal perimeter expansion of the foam layers 10, 12 can readily take place.
  • the outer cover 22 can be closed about the foam layers 10,12 by means such as stitches that surround the mattress as shown in Fig. 4 or there may be an opening 24 in the outer cover 22 to enable the foam layers 10, 12 to be readily inserted into and removed from the outer over 22.
  • the opening 24 may be secured by means such as a zipper, a Velcro closure system or other similar means.
  • the present mattress is comprised of an inner foam layer 10 comprised of a open or closed cell foam material and a pair of outer foam layers 12 comprised of a visco-elastic foam material having less stiffness than the inner foam layer 10 and the composite foam layers 10, 12 are encased in a outer cover 22 of a particular material to achieve the advantages of the present invention.

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  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Claims (8)

  1. Schaumstoffverbund-Anordnung, umfassend eine innere Schaumstofflage (10) aus einem offenporigen oder geschlossenporigen Schaumstoffmaterial mit einer bestimmten Elastizität, ein Paar von äußeren Schaumstofflagen (12), die an den beiden Seiten der inneren Lage angeordnet sind und die innere Schaumstofflage sandwichartig zwischen sich einschließen, wobei die äußeren Schaumstofflagen (12) aus einem visko-elastischen Schaumstoffmaterial bestehen,
    dadurch gekennzeichnet,
    dass die äußeren Schaumstofflagen (12) mittels eines Streifens (20) eines Klebstoffmaterials an der inneren Lage befestigt sind, welcher zumindest im Wesentlichen entlang des äußeren Umfangs der äußeren Schaumstofflagen oder der inneren Schaumstofflage vorgesehen ist, so dass die Teile (21) der Lagen, die innerhalb des Streifens liegen, frei von Klebstoff sind und eine Bewegung zwischen den inneren und äußeren Schaumstofflagen innerhalb des Streifens (20) ermöglicht ist.
  2. Schaumstoff-Anordnung nach Anspruch 1
    in Form einer Kindermatratze zum Unterstützen eines Kindes.
  3. Schaumstoff-Anordnung nach Anspruch 2,
    wobei die Kindermatratze eine Umhüllung (22) umfasst und die drei inneren und äußeren Lagen (10, 12) lose in der Umhüllung aufgenommen sind.
  4. Schaumstoff-Anordnung nach einem der Ansprüche 1 bis 3,
    bei welcher die innere Schaumstofflage (10) weniger elastisch als die äußeren Schaumstofflagen (12) ist.
  5. Schaumstoff-Anordnung nach einem der Ansprüche 1 bis 4,
    bei der die Dichte der äußeren, visko-elastischen Schaumstofflagen (12) zwischen 1,0 und 5,0 Pfund pro Kubikfuß (16 bis 80 Kilogramm pro Kubikmeter) liegt.
  6. Schaumstoff-Anordnung nach einem der Ansprüche 1 bis 5,
    bei der die Dichte der inneren Schaumstofflage (10) zwischen 1,0 und 3,0 Pfund pro Kubikfuß (16 bis 48 Kilogramm pro Kubikmeter) liegt.
  7. Verfahren zur Herstellung einer Kindermatratze,
    umfassend die Verfahrensschritte:
    Bereitstellen einer inneren Schaumstofflage (10), die aus einem offenporigen oder geschlossenporigen Schaumstoffmaterial besteht; Bereitstellen eines Paars von Schaumstofflagen (12), die aus einem visko-elastischen Schaumstoffmaterial bestehen; und
    mechanisches Festlegen der äußeren Schaumstofflagen an der inneren Schaumstofflage, um die innere Schaumstofflage sandwichartig zwischen den beiden äußeren Schaumstofflagen anzuordnen, und zwar durch Aufbringen eines Streifens Klebstoff im Wesentlichen entlang des äußeren Umfangs der äußeren Schaumstofflagen oder der inneren Schaumstofflage, so dass diejenigen Teile (21) der Lagen, die innerhalb des Streifens liegen, frei von Klebstoff sind und eine Bewegung zwischen der inneren und den äußeren Schaumstofflagen innerhalb des Streifens (20) ermöglicht ist.
  8. Verfahren nach Anspruch 7,
    welches weiterhin die folgenden Verfahrensschritte umfasst:
    Bereitstellen einer Umhüllung (22) und
    Einschließen der inneren Schaumstofflage (10) und der daran festgelegten äußeren Schaumstofflagen (12) in der Umhüllung.
EP06250127A 2005-01-25 2006-01-11 Kindermatraze Expired - Lifetime EP1683448B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/042,271 US20060162088A1 (en) 2005-01-25 2005-01-25 Infant mattress

Publications (2)

Publication Number Publication Date
EP1683448A1 EP1683448A1 (de) 2006-07-26
EP1683448B1 true EP1683448B1 (de) 2008-02-27

Family

ID=36177891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06250127A Expired - Lifetime EP1683448B1 (de) 2005-01-25 2006-01-11 Kindermatraze

Country Status (5)

Country Link
US (1) US20060162088A1 (de)
EP (1) EP1683448B1 (de)
JP (1) JP2006204926A (de)
CA (1) CA2529991A1 (de)
DE (1) DE602006000564T2 (de)

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DE202012002092U1 (de) 2012-03-02 2012-06-21 Europe Brands S.à.r.l. Mehrlagige Matratze, insbesondere für Säuglinge und/oder Kleinkinder

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012002092U1 (de) 2012-03-02 2012-06-21 Europe Brands S.à.r.l. Mehrlagige Matratze, insbesondere für Säuglinge und/oder Kleinkinder

Also Published As

Publication number Publication date
DE602006000564D1 (de) 2008-04-10
DE602006000564T2 (de) 2009-02-26
US20060162088A1 (en) 2006-07-27
EP1683448A1 (de) 2006-07-26
JP2006204926A (ja) 2006-08-10
CA2529991A1 (en) 2006-07-25

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