EP0114762B1 - Matress for therapeutic purposes, especially for preventing pressure sores as a result of a patient being confined to bed for a long period - Google Patents

Matress for therapeutic purposes, especially for preventing pressure sores as a result of a patient being confined to bed for a long period Download PDF

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Publication number
EP0114762B1
EP0114762B1 EP84400060A EP84400060A EP0114762B1 EP 0114762 B1 EP0114762 B1 EP 0114762B1 EP 84400060 A EP84400060 A EP 84400060A EP 84400060 A EP84400060 A EP 84400060A EP 0114762 B1 EP0114762 B1 EP 0114762B1
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EP
European Patent Office
Prior art keywords
mattress
layers
sole
contact
mattress according
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
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EP84400060A
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German (de)
French (fr)
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EP0114762A3 (en
EP0114762A2 (en
Inventor
Jean-Louis Bernard Viard
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Support Systems International Inc
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Support Systems International Inc
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Priority to AT84400060T priority Critical patent/ATE44229T1/en
Publication of EP0114762A2 publication Critical patent/EP0114762A2/en
Publication of EP0114762A3 publication Critical patent/EP0114762A3/en
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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
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A47C27/146—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities on the outside surface of the mattress or cushion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/057—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
    • A61G7/05715—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with modular blocks, or inserts, with layers of different material

Definitions

  • the present invention relates to a mattress usable for therapeutic purposes, of the type described in the preamble to the main claim.
  • Such a mattress is already described in document FR-A-2 324 260.
  • This mattress is adaptable to the weight of the patient so as to avoid the formation of bedsores whatever the weight of the patient bedridden on the mattress.
  • a cavity has been cut in the body of the mattress for receiving an insert of rectangular shape and having on one side a plurality of individual bearing cells forming studs. To take into account the different weights of the patients, the insert fittings are changed.
  • This known mattress has the major drawback that different insertion pads must be used for patients of different weight.
  • these linings occupy only a certain part of the surface on which the patient rests, which reduces the effectiveness of this mattress.
  • this already imperfect efficiency risks being further reduced if the personnel having to prepare the bed fail to associate with a given patient the appropriate type of insert.
  • the known mattress has a complex, costly structure which is likely to be relatively ineffective.
  • the object of the present invention is to provide a mattress which does not have the above-mentioned drawbacks.
  • the mattress according to the invention solves the problem of adapting to the weight of the patient without it being necessary to modify the structure of the mattress, for example by installing a lining of the mattress. 'specific insertion.
  • the same mattress can be used for all the patients having a weight which can range from 20 to 100 kg, the adaptation being ensured by the claimed structure of the contact pads.
  • prior art EP-A-0 046 008 relates to a mattress which also includes an insertion pad provided with contact pads, without however relating to the problem of adaptation to the weight of a patient.
  • the insert is formed by an inflatable cushion by the introduction of pressurized air, the upper surface of which is shaped to present, in the inflated state, frustoconical elements which constitute said contact pads.
  • the upper surface is covered with a covering element whose shape is complementary to that of the cushion surface. Pressurized air can be introduced into the space defined between the upper surface and the covering, which can escape through orifices made in the latter.
  • the mattress according to EU-A-0 046 008 thus has a very particular structure which does not give any instruction to the skilled person, which would allow the mattress according to the invention to be produced, even in combination with the document FR-A-2 324,260.
  • FIG. 1 Another mattress is known from document FR-A-2 087 528 which does not relate to the problem of the invention and does not include contact pads. It is a mattress structure formed by juxtaposing a number of cushions. Each cushion is made in the form of a parallelepiped and is formed from bottom to top first by a support of great height made of a cellular material with closed cells and provided relatively resistant to compression, then by a layer of weaker thickness than that of the support and provided in a similar but less resistant material, and finally by a sheet made of a cellular material with open cells and whose flexibility is very great.
  • the purpose of this mattress structure is to prevent the formation of bedsores in the bone mass of the body and to avoid tedious cleaning and costly disinfection of the mattress.
  • FIG. 1 is a perspective view of a first embodiment of an anti-decubitus mattress according to the present invention.
  • Figure 2 is a perspective view of a second embodiment of a mattress according to the invention.
  • FIG. 1 represents an anti-decubitus mattress which comprises, in a manner known per se, a contact zone 1 and a base zone forming a sole 2.
  • the contact zone 1 comprises channels 4 for separating the mass of the material in studs 6 from independent contacts of each other.
  • this mattress consists of at least two layers 8, 10, 12 or superimposed plates of flexible cellular material with different compressive strength relative to one another, arranged so that the resistance the compression is increasing from the surface 14 of the contact zone 1 to the sole 2 of the mattress.
  • the studs 6 comprise at least in the major part of their mass at least one (8, 10) of said two layers (8, 10; 12) so as to have a bearing capacity of the mattress adapted to the weight of the patient.
  • the contact pads comprise in most of their mass at least two layers 8, 10 of flexible cellular material of different compressive strength while the sole 2 is produced in a single layer 12.
  • These three layers 8, 10, 12 are for example made of a flexible cellular material of the polyether type, but each of the layers can be made of a flexible cellular material of different nature.
  • the first layer 8 which in fact constitutes in practice the contact layer is made of a foam material of polyether type having a density of 21 kg / m 3 which gives a compressive strength of 3 to 5 g / cm 2 at 25% crushing according to the aforementioned ISO standard, and a thickness of 3 cm.
  • the second layer 10 is made of a foam material of polyether type having a density of 23 kg / m 3 which gives a compressive strength of 11 to 18 g / cm 2 to 25% of crushing (thickness 6 cm) and the third layer which forms most of the sole 2 is made of a polyether type foam material having a density equal to 27 kg / m 3 which corresponds to a compressive strength of 22 to 28 g / cm 2 to 25 % crushing according to the aforementioned ISO standard, and has a thickness of 9 cm.
  • channels 4 end substantially at the contact surface between the second layer 10 and the sole 2 but they can also extend slightly in the sole 2 without any particular drawback.
  • the mattress is produced by the superposition of five layers of different compressive strength which are successively the following from the contact surface 16 to the sole 18.
  • a first layer 20 made of a flexible cellular material formed by a polyurethane foam having a density of 30 kg / m3 corresponding to a resistance to compression of 10 to 14 g / cm 2 to 25% of crushing. Its thickness is 2 cm.
  • a second layer 22 also made of polyurethane foam having a density of 32 kg / m 3 corresponding to a compressive strength of 14 to 18 g / cm 2 to 25% crushing, and 2 cm thick.
  • a fourth layer 26 also made of polyurethane foam having a density of 37 kg / cm 3 corresponding to a compressive strength of 22 to 28 grams per cm 2 to 25% of crushing, and a thickness equal to 6 cm.
  • the sole 18 is formed by a fifth layer 28 of polyurethane foam having a density of 55 kg / m 3 corresponding to a compressive strength of 55 to 66 g / cm 2 to 25% of crushing, and 6 cm thick.
  • the first, second and third layers will work between around 10 and 60%.
  • this new anti-decubitus mattress structure has the unexpected technical advantage that a patient with a high weight will compress the first and second layers as much as possible, but the lift will be resumed by the third, fourth and fifth layers. which prevents any tailgating phenomenon.
  • a patient of low weight such as for example a child, makes the first and / or second neck work fully che.
  • a mattress is therefore obtained with a lift adapted to the weight of the patient while benefiting from the particular advantages provided by the presence of lift pads independent of each other, in order to obtain the anti-decubitus effect originally sought.
  • colors can be used for the various layers of the mattress, these colors being able to be different for each layer.
  • the invention also includes all the means constituting technical equivalents of the means described and their various combinations.
  • Example 1 it is possible to mix different categories of foam to form the various layers of the mattress.
  • Example 2 it is possible to use a lower quality foam for the sole 2 without prejudicing the characteristics of the mattress.
  • the aforementioned multilayer mattress can be poured all at once in a suitable mold from a machine capable of producing the vertical stacking of the aforementioned layers and which can for example comprise a suitable independent multi-stage die, each of which is supplied with a material of specific density or resistance mentioned above, different from that of other materials.
  • the mattress can include any number of layers (n layers).

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Finger-Pressure Massage (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Medicinal Preparation (AREA)

Abstract

1. Mattress usable for therapeutical purposes, more particularly for preventing the formation of bedsores during a long lying in bed of a patient on the said mattress, based on flexible cellular materials, comprising a base region forming a mattress sole (2) and an upper contact region (1) provided with contact elements (6) independant from each other and separated by slots (4), characterized in that the region provided with contact elements is fastened on the upper surface of the sole (2) and each contact element comprises at least two superimposed layers (8, 10) of flexible cellular materials, the resistance to compression of these two layers and of the sole increasing from the contact surface (14) of the mattress to the said sole.

Description

La présente invention concerne un matelas utilisable à des fins thérapeutiques, du type décrit dans le préambule de la revendication principale.The present invention relates to a mattress usable for therapeutic purposes, of the type described in the preamble to the main claim.

Un tel matelas est déjà décrit dans le document FR-A-2 324 260. Ce matelas est adaptable au poids du patient de façon à éviter la formation d'escarres quel que soit le poids du patient alité sur le matelas. Pour résoudre ce problème, on a découpé dans le corps du matelas une cavité destinée à recevoir une garniture d'insertion de forme rectangulaire et présentant sur un côté une pluralité de cellules portantes individuelles formant plots. Pour tenir compte des poids différents des patients, on change les garnitures d'insertion.Such a mattress is already described in document FR-A-2 324 260. This mattress is adaptable to the weight of the patient so as to avoid the formation of bedsores whatever the weight of the patient bedridden on the mattress. To solve this problem, a cavity has been cut in the body of the mattress for receiving an insert of rectangular shape and having on one side a plurality of individual bearing cells forming studs. To take into account the different weights of the patients, the insert fittings are changed.

Ce matelas connu a pour inconvénient majeur que différentes garnitures d'insertion doivent être utilisées pour des patients de poids différent. De plus, ces garnitures n'occupent qu'une certaine partie de la surface sur laquelle repose le malade, ce qui diminue l'efficacité de ce matelas. De plus, cette efficacité déjà imparfaite risque d'être encore plus réduite si le personnel devant préparer le lit ne réussit pas à associer à un malade donné le type approprié de garniture d'insertion. En résumé, le matelas connu présente une structure complexe, coûteuse et qui risque d'être relativement peu efficace.This known mattress has the major drawback that different insertion pads must be used for patients of different weight. In addition, these linings occupy only a certain part of the surface on which the patient rests, which reduces the effectiveness of this mattress. In addition, this already imperfect efficiency risks being further reduced if the personnel having to prepare the bed fail to associate with a given patient the appropriate type of insert. In summary, the known mattress has a complex, costly structure which is likely to be relatively ineffective.

La présente invention a pour but de proposer un matelas qui ne présente pas les inconvénients susmentionnés.The object of the present invention is to provide a mattress which does not have the above-mentioned drawbacks.

Ce but est atteint grâce aux caractéristiques qui sont énoncées dans la partie caractérisante de la revendication principale.This object is achieved thanks to the characteristics which are set out in the characterizing part of the main claim.

C'est grâce à ces caractéristiques particulières, que le matelas selon l'invention résout le problème d'adaptation âu poids du patient sans qu'il soit nécessaire de modifier la structure du matelas par exemple par la mise en place d'une garniture d'insertion spécifique. Selon l'invention, un même matelas peut être utilisé pour tous les patients ayant un poids pouvant aller de 20 à 100 kg, l'adaptation étant assurée par la structure revendiquée des plots de contact.It is thanks to these particular characteristics that the mattress according to the invention solves the problem of adapting to the weight of the patient without it being necessary to modify the structure of the mattress, for example by installing a lining of the mattress. 'specific insertion. According to the invention, the same mattress can be used for all the patients having a weight which can range from 20 to 100 kg, the adaptation being ensured by the claimed structure of the contact pads.

Il ressort de ce qui précède que le matelas selon l'invention ne découle pas de façon évidente du document FR-A-2 324 260, pris séparément ou en combinaison avec d'autres antériorités. Par exemple l'antériorité EP-A-0 046 008 a pour objet un matelas qui comporte également une garniture d'insertion pourvu de plots de contact, sans pour autant concerner le problème d'adaptation au poids d'un malade. La garniture d'insertion est formée par un coussin gonflable par l'introduction de l'air sous pression, dont la surface supérieure est conformée pour présenter à l'état gonflé des éléments tronconiques qui constituent lesdits plots de contact. La surface supérieure est recouverte d'un élément de revêtement dont la forme est complémentaire à celle de la surface du coussin. Dans l'espace défini entre la surface supérieure et le revêtement peut être introduit de l'air sous pression qui peut échapper à travers des orifices pratiqués dans ce dernier. Le matelas selon EU-A-0 046 008 présente ainsi une structure très particulière qui ne donne aucun enseignement à l'homme du métier, qui permettrait de réaliser le matelas selon l'invention, même en combinaison avec le document FR-A-2 324 260.It appears from the foregoing that the mattress according to the invention does not clearly follow from document FR-A-2 324 260, taken separately or in combination with other prior art. For example, prior art EP-A-0 046 008 relates to a mattress which also includes an insertion pad provided with contact pads, without however relating to the problem of adaptation to the weight of a patient. The insert is formed by an inflatable cushion by the introduction of pressurized air, the upper surface of which is shaped to present, in the inflated state, frustoconical elements which constitute said contact pads. The upper surface is covered with a covering element whose shape is complementary to that of the cushion surface. Pressurized air can be introduced into the space defined between the upper surface and the covering, which can escape through orifices made in the latter. The mattress according to EU-A-0 046 008 thus has a very particular structure which does not give any instruction to the skilled person, which would allow the mattress according to the invention to be produced, even in combination with the document FR-A-2 324,260.

Enfin, un autre matelas est connu par le document FR-A-2 087 528 qui n'est pas relatif au problème de l'invention et ne comporte pas de plots de contact. Il s'agit d'une structure de matelas formée par juxtaposition d'un certain nombre de coussins. Chaque coussin est réalisé sous la forme d'un parallélépipède et est constitué de bas en haut d'abord par un support de hauteur importante réalisé en une matière cellulaire à alvéoles fermées et prévue relativement résistante à la compression, puis par une couche de plus faible épaisseur que celle du support et prévue en une matière semblable mais moins résistante, et enfin par une nappe faite en une matière cellulaire à alvéoles ouvertes et dont la souplesse est très grande. Cette structure de matelas a pour objectif d'empêcher la formation d'escarres au niveau de massifs osseux du corps et éviter un nettoyage fastidieux et une désinfection coûteuse du matelas. Ce problème est résolu en composant le matelas d'éléments fractionnaires, c'est-à-dire de coussins juxtaposés qui ayant un prix de revient très bas peuvent être jetés purement et simplement après utilisation. On constate que la constitution de chaque coussin en trois couches n'est nullement mise en rapport avec une possibilité quelconque d'adapter ce matelas à des poids différents des patients. Cette antériorité FR-A-2 087 528 ne suggère nullement que la multitude des garnitures d'insertion selon le document FR-A-2 224 260 peut être évitée en conférant aux plots de contacts une structure en plusieurs couches superposées.Finally, another mattress is known from document FR-A-2 087 528 which does not relate to the problem of the invention and does not include contact pads. It is a mattress structure formed by juxtaposing a number of cushions. Each cushion is made in the form of a parallelepiped and is formed from bottom to top first by a support of great height made of a cellular material with closed cells and provided relatively resistant to compression, then by a layer of weaker thickness than that of the support and provided in a similar but less resistant material, and finally by a sheet made of a cellular material with open cells and whose flexibility is very great. The purpose of this mattress structure is to prevent the formation of bedsores in the bone mass of the body and to avoid tedious cleaning and costly disinfection of the mattress. This problem is solved by composing the mattress of fractional elements, that is to say of juxtaposed cushions which having a very low cost price can be thrown away purely and simply after use. It can be seen that the constitution of each cushion in three layers is in no way related to any possibility of adapting this mattress to different weights of the patients. This prior art FR-A-2 087 528 in no way suggests that the multitude of insertion fittings according to document FR-A-2 224 260 can be avoided by giving the contact pads a structure in several superposed layers.

L'invention sera mieux comprise et d'autres buts, caractéristiques, détails et avantages à celle-ci apparaîtront plus clairement au cours de la description explicative qui va suivre faite en référence aux figures qui donnent deux exemples de réalisation de l'invention, et qui ne sauraient en aucune façon limiter la portée de l'invention.The invention will be better understood and other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the figures which give two examples of embodiment of the invention, and which in no way limit the scope of the invention.

La figure 1 est une vue en perspective d'un premier exemple de réalisation d'un matelas anti-escarres selon la présente invention, etFIG. 1 is a perspective view of a first embodiment of an anti-decubitus mattress according to the present invention, and

la figure 2 est une vue en perspective d'un deuxième exemple de réalisation d'un matelas selon l'invention.Figure 2 is a perspective view of a second embodiment of a mattress according to the invention.

Exemple 1Example 1

La figure 1 représente un matelas anti-escarres qui comprend de manière connue en soi une zone de contact 1 et une zone de base formant semelle 2. La zone de contact 1 comporte des canaux 4 de séparation de la masse du matériau en plots 6 de contact indépendants les uns des autres.FIG. 1 represents an anti-decubitus mattress which comprises, in a manner known per se, a contact zone 1 and a base zone forming a sole 2. The contact zone 1 comprises channels 4 for separating the mass of the material in studs 6 from independent contacts of each other.

Selon l'invention, ce matelas est constitué d'au moins deux couches 8, 10, 12 ou plaques superposées de matériau cellulaire souple de résistance à la compression différente l'une par rapport à l'autre, disposées de telle sorte que la résistance à la compression soit croissante depuis la surface 14 de la zone de contact 1 jusqu'à la semelle 2 du matelas. D'autre part, les plots 6 comportent au moins dans la majeure partie de leur masse au moins l'une (8, 10) desdites deux couches (8, 10 ; 12) de manière à avoir une portance du matelas adaptée au poids du patient.According to the invention, this mattress consists of at least two layers 8, 10, 12 or superimposed plates of flexible cellular material with different compressive strength relative to one another, arranged so that the resistance the compression is increasing from the surface 14 of the contact zone 1 to the sole 2 of the mattress. On the other hand, the studs 6 comprise at least in the major part of their mass at least one (8, 10) of said two layers (8, 10; 12) so as to have a bearing capacity of the mattress adapted to the weight of the patient.

Dans l'exemple représenté, les plots de contact comportent dans la majeure partie de leur masse au moins deux couches 8, 10 de matériau cellulaire souple de résistance à la compression différente tandis que la semelle 2 est réalisée en une seule couche 12.In the example shown, the contact pads comprise in most of their mass at least two layers 8, 10 of flexible cellular material of different compressive strength while the sole 2 is produced in a single layer 12.

Ces trois couches 8, 10, 12 sont par exemple réalisées en un matériau cellulaire souple du type polyéther mais chacune des couches peut être réalisée en un matériau cellulaire souple de nature différente.These three layers 8, 10, 12 are for example made of a flexible cellular material of the polyether type, but each of the layers can be made of a flexible cellular material of different nature.

Dans l'exemple représenté, la première couche 8 qui constitue en fait en pratique la couche de contact est réalisée en un matériau mousse de type polyéther ayant une densité de 21 kg/m3 ce qui donne une résistance à la compression de 3 à 5 g/cm2 à 25 % d'écrasement selon la norme ISO précitée, et une épaisseur de 3 cm.In the example shown, the first layer 8 which in fact constitutes in practice the contact layer is made of a foam material of polyether type having a density of 21 kg / m 3 which gives a compressive strength of 3 to 5 g / cm 2 at 25% crushing according to the aforementioned ISO standard, and a thickness of 3 cm.

La deuxième couche 10 est réalisée en un matériau mousse de type polyéther ayant une densité de 23 kg/m3 ce qui donne une résistance à la compression de 11 à 18 g/cm2 à 25 % d'écrasement (épaisseur 6 cm) et la troisième couche qui forme l'essentiel de la semelle 2 est réalisée en un matériau mousse de type polyéther ayant une densité égale à 27 kg/m3 ce qui correspond à une résistance à la compression de 22 à 28 g/cm2 à 25 % d'écrasement selon la norme ISO précitée, et a une épaisseur de 9 cm.The second layer 10 is made of a foam material of polyether type having a density of 23 kg / m 3 which gives a compressive strength of 11 to 18 g / cm 2 to 25% of crushing (thickness 6 cm) and the third layer which forms most of the sole 2 is made of a polyether type foam material having a density equal to 27 kg / m 3 which corresponds to a compressive strength of 22 to 28 g / cm 2 to 25 % crushing according to the aforementioned ISO standard, and has a thickness of 9 cm.

On peut observer en outre en référence à la figure 1 que les canaux 4 se terminent sensiblement à la surface de contact entre la deuxième couche 10 et la semelle 2 mais ils peuvent également se prolonger légèrement dans la semelle 2 sans inconvénient particulier.It can also be observed with reference to FIG. 1 that the channels 4 end substantially at the contact surface between the second layer 10 and the sole 2 but they can also extend slightly in the sole 2 without any particular drawback.

Un tel matelas est fabriqué de la manière suivante :

  • Les couches 8, 10 et 12 peuvent être liées entre elles de préférence par collage et ensuite le matelas multicouche ainsi formé est soumis à une découpe appropriée pour réaliser les canaux 4 de manière à définir les plots indépendants 6. La forme des plots indépendants 6 peut être quelconque pourvu que les plots 6 conservent leur indépendance. Dans l'exemple représenté ces plots ont de préférence une forme pyramidale tronquée qui procure un aspect esthétique particulièrement agréable à l'oeil.
Such a mattress is manufactured in the following manner:
  • The layers 8, 10 and 12 can preferably be bonded to each other by bonding and then the multilayer mattress thus formed is subjected to an appropriate cut to make the channels 4 so as to define the independent pads 6. The shape of the independent pads 6 can be arbitrary provided that the studs 6 retain their independence. In the example shown, these studs preferably have a truncated pyramidal shape which gives an aesthetic appearance which is particularly pleasing to the eye.

On observera que un tel matelas à trois couches pourrait être obtenu directement par un moulage approprié réalisant directement la succession de couches précitée avec les canaux 4.It will be observed that such a three-layer mattress could be obtained directly by an appropriate molding directly producing the above-mentioned succession of layers with the channels 4.

Actuellement, on préfère réunir par collage plusieurs couches ou plaques de matériau cellulaire souple qui sont ensuite soumises à un découpage approprié qui permet non seulement de réaliser les canaux 4 mais également d'adapter les dimensions du matelas à la demande.Currently, it is preferable to join by bonding several layers or plates of flexible cellular material which are then subjected to an appropriate cutting which not only makes it possible to produce the channels 4 but also to adapt the dimensions of the mattress to the request.

Exemple 2Example 2

Dans cet exemple, en référence à la figure 2, le matelas est réalisé par la superposition de cinq couches de résistance à la compression différente qui sont successivement les suivantes depuis la surface de contact 16 à la semelle 18.In this example, with reference to FIG. 2, the mattress is produced by the superposition of five layers of different compressive strength which are successively the following from the contact surface 16 to the sole 18.

Une première couche 20 réalisée en un matériau cellulaire souple formé par une mousse de polyuréthane ayant une densité de 30 kg/m3 correspondant à une résistance à la compression de 10 à 14 g/cm2 à 25 % d'écrasement. Son épaisseur est de 2 cm.A first layer 20 made of a flexible cellular material formed by a polyurethane foam having a density of 30 kg / m3 corresponding to a resistance to compression of 10 to 14 g / cm 2 to 25% of crushing. Its thickness is 2 cm.

Une deuxième couche 22 également en mousse de polyuréthane ayant une densité de 32 kg/m3 correspondant à une résistance à la compression de 14 à 18 g/cm2 à 25 % d'écrasement, et de 2 cm d'épaisseur.A second layer 22 also made of polyurethane foam having a density of 32 kg / m 3 corresponding to a compressive strength of 14 to 18 g / cm 2 to 25% crushing, and 2 cm thick.

Une troisième couche 24 en mousse de polyuréthane ayant une densité de 35 kg/m3 correspondant à une résistance à la compression de 16 à 21 grammes par cm2 à 25 % d'écrasement, et son épaisseur est de 2 cm.A third layer 24 of polyurethane foam having a density of 35 kg / m 3 corresponding to a compressive strength of 16 to 21 grams per cm 2 to 25% of crushing, and its thickness is 2 cm.

Une quatrième couche 26 également en mousse de polyuréthane ayant une densité de 37 kg/cm3 correspondant à une résistance à la compression de 22 à 28 grammes par cm2 à 25 % d'écrasement, et une épaisseur égale à 6 cm.A fourth layer 26 also made of polyurethane foam having a density of 37 kg / cm 3 corresponding to a compressive strength of 22 to 28 grams per cm 2 to 25% of crushing, and a thickness equal to 6 cm.

Ces quatre couches forment la majeure partie du plot 32 défini par les canaux 30 de séparation analogues aux canaux 4 de la figure 1.These four layers form the major part of the pad 32 defined by the separation channels 30 analogous to the channels 4 of FIG. 1.

Enfin, la semelle 18 est formée par une cinquième couche 28 en mousse de polyuréthane ayant une densité de 55 kg/m3 correspondant à une résistance à la compression de 55 à 66 g/cm2 à 25 % d'écrasement, et 6 cm d'épaisseur.Finally, the sole 18 is formed by a fifth layer 28 of polyurethane foam having a density of 55 kg / m 3 corresponding to a compressive strength of 55 to 66 g / cm 2 to 25% of crushing, and 6 cm thick.

Ainsi, dans le cas d'un patient ayant un poids compris entre 20 et 25 kilogrammes, seules les première et deuxième voire troisième couches vont travailler en écrasement entre 10 et 60 % environ.Thus, in the case of a patient with a weight between 20 and 25 kilograms, only the first and second or even third layers will work in crushing between 10 and 60% approximately.

Pour un poids moyen, d'environ 50 kilogrammes, les première, deuxième, troisième couches vont travailler entre 10 et 60 % environ.For an average weight of around 50 kilograms, the first, second and third layers will work between around 10 and 60%.

Enfin, pour un poids important d'environ 100 kilogrammes, les cinq couches font travailler dans une même valeur de 10 à 60 % d'écrasement.Finally, for a significant weight of around 100 kilograms, the five layers work in the same value of 10 to 60% of crushing.

On peut constater ainsi que cette nouvelle structure de matelas anti-escarres présente l'avantage technique inattendu qu'un patient ayant un poids élevé va comprimer au maximum les première et deuxième couches mais la sustentation va être reprise par les troisième, quatrième et cinquième couches ce qui empêche tout phénomène de talonnement.We can see that this new anti-decubitus mattress structure has the unexpected technical advantage that a patient with a high weight will compress the first and second layers as much as possible, but the lift will be resumed by the third, fourth and fifth layers. which prevents any tailgating phenomenon.

D'autre part, un patient d'un faible poids, comme par exemple un enfant, fait travailler intégralement la première et/ou la deuxième couche.On the other hand, a patient of low weight, such as for example a child, makes the first and / or second neck work fully che.

On obtient donc un matelas d'une portance adaptée au poids du patient tout en bénéficiant des avantages particuliers procurés par la présence de plots de portance indépendants les uns des autres, en vue d'obtenir l'effet anti-escarres primitivement recherché.A mattress is therefore obtained with a lift adapted to the weight of the patient while benefiting from the particular advantages provided by the presence of lift pads independent of each other, in order to obtain the anti-decubitus effect originally sought.

Pour améliorer sa présentation, on peut utiliser des couleurs pour les diverses couches du matelas, ces couleurs pouvant être différentes pour chaque couche.To improve its presentation, colors can be used for the various layers of the mattress, these colors being able to be different for each layer.

L'invention comprend d'autre part tous les moyens constituant des équivalents techniques des moyens décrits ainsi que leurs diverses combinaisons. Ainsi, comme cela a été dit en particulier à l'exemple 1, on peut mélanger différentes catégories de mousse pour constituer les diverses couches du matelas. En particulier, on peut utiliser une mousse de moins bonne qualité pour la semelle 2 sans préjudicier aux caractéristiques du matelas.The invention also includes all the means constituting technical equivalents of the means described and their various combinations. Thus, as was said in particular in Example 1, it is possible to mix different categories of foam to form the various layers of the mattress. In particular, it is possible to use a lower quality foam for the sole 2 without prejudicing the characteristics of the mattress.

De même, le matelas multicouche précité peut être coulé en une seule fois dans un moule approprié à partir d'une machine capable de réaliser l'empilement vertical de couches précité et qui peut comprendre par exemple une filière appropriée multi-étages indépendants dont chacun est alimenté en un matériau de densité ou résistance précitée propre, différente de celle des autres matériaux. Enfin le matelas peut comporter un nombre quelconque de couches (n couches).Likewise, the aforementioned multilayer mattress can be poured all at once in a suitable mold from a machine capable of producing the vertical stacking of the aforementioned layers and which can for example comprise a suitable independent multi-stage die, each of which is supplied with a material of specific density or resistance mentioned above, different from that of other materials. Finally, the mattress can include any number of layers (n layers).

Claims (8)

1. Mattress usable for therapeutical purposes, more particularly for preventing the formation of bedsores during a long lying in bed of a patient on the said mattress, based on flexible cellular materials, comprising a base region forming a mattress sole (2) and an upper contact region (1) provided with contact elements (6) independant from each other and separated by slots (4), characterized in that the region provided with contact elements is fastened on the upper surface of the sole (2) and each contact element comprises at least two superimposed layers (8, 10) of flexible cellular materials, the resistance to compression of these two layers and of the sole increasing from the contact surface (14) of the mattress to the said sole.
2. Anti-bedsore mattress according to claim 1, characterized in that the sole of the mattress is constituted by a single layer (12) and the contact region comprises all the other layers (8, 10).
3. Anti-bedsore mattress according to any one of the preceding claims, characterized in that the resistance to compression of each layer (8, 10, 12; 20, 22, 24, 26, 28) is comprised between 3 g/cm2 and 200 g/cm2 according to the ISO reference DIS 3386 standard establishing the weight necessary to crush the flexible cellular material to 25 % of its initial thickness.
4. Anti-bedsore mattress according to any one of the preceding claims, characterized in that the layers are adhesively bound together and the separating slots (4 ; 30) are obtained subsequently by cutting the intact surface of the layer with the lowest resistance to compression.
5. Anti-bedsore mattress according to any one of the preceding claims, characterized in that the cellular flexible material is selected from the group comprising a polyurethane foam material, a polyethylene foam material, a polyvinyl chloride foam material, a foam material of the polyether type, or a latex.
6. Anti-bedsore mattress according to any one of the preceding claims, characterized in that it comprises five superposed layers (20, 22, 24, 26, 28) of flexible cellular material, four (20, 22, 24, 26) of which for said contact elements (32).
7. Anti-bedsore mattress according to any one of the preceding claims, characterized in that the flexible cellular material composition is the same in each of the layers and is chosen preferably among a polyurethane foam or a polyether-type foam.
8. Anti-bedsore mattress according to any one of the preceding claims, characterized in that said contact elements are truncated pyramidal in shape.
EP84400060A 1983-01-19 1984-01-12 Matress for therapeutic purposes, especially for preventing pressure sores as a result of a patient being confined to bed for a long period Expired EP0114762B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400060T ATE44229T1 (en) 1983-01-19 1984-01-12 MATTRESS USED FOR THERAPEUTIC PURPOSES, IN PARTICULAR TO PREVENT PRESSURE CUBITUS RESULTING FROM A PATIENT'S LONG REST IN BED.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8300790 1983-01-19
FR838300790A FR2539297B1 (en) 1983-01-19 1983-01-19 MATTRESS USEFUL FOR THERAPEUTIC PURPOSES, PARTICULARLY TO AVOID THE FORMATION OF SQUARES DURING LONG-TERM BEDING OF A PATIENT

Publications (3)

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EP0114762A2 EP0114762A2 (en) 1984-08-01
EP0114762A3 EP0114762A3 (en) 1984-08-22
EP0114762B1 true EP0114762B1 (en) 1989-06-28

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EP84400060A Expired EP0114762B1 (en) 1983-01-19 1984-01-12 Matress for therapeutic purposes, especially for preventing pressure sores as a result of a patient being confined to bed for a long period

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EP (1) EP0114762B1 (en)
AT (1) ATE44229T1 (en)
DE (1) DE3478786D1 (en)
ES (1) ES276961Y (en)
FR (1) FR2539297B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4124044C2 (en) * 1991-07-19 1998-06-04 Klaus Prof Dr Heckmann mattress
FR2682292B1 (en) * 1991-10-11 1999-09-17 Georges Roux ANTI-PRESSURE MATTRESS.
AU7606694A (en) * 1993-09-13 1995-04-03 Woodbridge Foam Corporation Pressure relief foam mattress
US5539942A (en) * 1993-12-17 1996-07-30 Melou; Yves Continuous airflow patient support with automatic pressure adjustment
FR2715886B1 (en) * 1994-02-04 1996-04-26 Askle Method and device for manufacturing elements of cushions or mattresses in flexible cellular material.
FR2752847B1 (en) * 1995-10-24 1998-12-04 Jean Pierre Archeny SYNTHETIC GEL FOAM WITH CLOSED CELLS, SELF-ADHESIVE, ELASTOMERIC, VISCOELASTIC, VARIABLE DENSITY, FOR MEDICAL AND INDUSTRIAL USE
FR2740139B1 (en) * 1995-10-24 1998-04-17 Ronvel Jean Louis ELASTOMERIC SELF RETRACTABLE GEL FOAM
GB2309896B (en) * 1996-02-09 1999-12-22 Recticel Ltd Pressure reducing mattress
EP2095745A1 (en) * 2008-02-26 2009-09-02 Technogel Italia S.R.L. Modular supporting element to make mattresses and the like
US9930971B2 (en) 2013-11-05 2018-04-03 András Péter Dóczi Mattress insert
EP3355845B1 (en) * 2015-09-30 2022-03-02 Roger Thomas Mascull An overlay

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046008A1 (en) * 1980-08-13 1982-02-17 PAUL, Patrick Robin David Mattress

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2087528A5 (en) * 1970-05-22 1971-12-31 Cherpin Jean Polyurethane foam block bed - for bedridden patients
DE2235818A1 (en) * 1972-07-21 1974-01-31 Steffen Monika MULTI-LAYER UPHOLSTERED BODY
FR2220238A1 (en) * 1973-03-09 1974-10-04 Pastore Gaetan Anti-bedsore mattress for medical use - has assembly of flexible cellular sections of varying elasticity
BE833663A (en) * 1975-09-22 1976-01-16 MATTRESS WITH VARIABLE PRESSURE INSERTED PADDING

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046008A1 (en) * 1980-08-13 1982-02-17 PAUL, Patrick Robin David Mattress

Also Published As

Publication number Publication date
EP0114762A3 (en) 1984-08-22
EP0114762A2 (en) 1984-08-01
FR2539297B1 (en) 1985-07-26
ES276961U (en) 1984-06-16
DE3478786D1 (en) 1989-08-03
ATE44229T1 (en) 1989-07-15
ES276961Y (en) 1985-08-01
FR2539297A1 (en) 1984-07-20

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