• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Article (1) to be applied to the skin, mucous membranes or wound, to absorb a liquid, especially an exudate, comprising: - distal absorbent layer (20), - one or more visual indicators (50) changing appearance in when in contact with the liquid, this or these visual indicators (50) being in contact with the distal absorbent layer (20), - an interface (30) intended to contact the skin or the mucous membranes, - between the interface (30) and the distal absorbent layer (20), at least one proximal absorbent layer (10) adjacent the interface (30), between the proximal absorbent layer (10) and the distal absorbent layer (20), at least one barrier layer with water (40) provided with at least one passage (41) allowing the liquid having passed through the proximal absorbent layer (10) to gain the distal absorbent layer (20).
    公开号:FR3015228A1
    申请号:FR1363022
    申请日:2013-12-19
    公开日:2015-06-26
    发明作者:Frederic Revol-Cavalier；Mouna Messaoud；Julien Steinbrunn
    申请人:Commissariat a lEnergie Atomique CEA；Laboratoires Urgo SAS；Commissariat a lEnergie Atomique et aux Energies Alternatives CEA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the articles to be applied to the skin or the mucous membranes and more particularly but not exclusively, the dressings. There is a need to know the degree of filling of an absorbent article, particularly a dressing applied to a low exudative wound, in order to be able to decide whether or not to replace it with a view to making the best use of it. Indeed, changing dressings too frequently can lead to poor wound healing process by disrupting the kinetics of healing, but also to an increased risk of bacterial contamination. However, it is often advisable to change dressings frequently to avoid prolonged contact with a medium that is too moist for the person, regardless of the patient considered. However, the level of exudation of a wound is highly dependent on the patient and is difficult to quantify beforehand. In the case where the liquid to be absorbed is the urine of a young infant and the article a diaper, there is also an interest in keeping the article in place until saturation, so as to reduce the quantity of articles used as well as the work necessary for the change of 1 '. by caregivers or parents. The aim of the invention is to further improve the absorbents to be applied to the skin or the mucous membranes in order to be able to use them as close as possible to the optimum. International application WO 2010/147533 discloses a dressing, which is not intended to indicate its degree of filling. International application WO 2012/080865 relates to an infant diaper which comprises a ventilation layer for reducing any wet contact at the interface with the skin of the infant and delivering the liquids to an adjacent absorbent layer; the structure comprises a distribution layer which allows to homogenize the liquid on its entire surface. The application describes an external pattern printed in two dimensions, possibly comprising a colored indicator, and for visualizing the presence of secreted urine. The colored indicator does not allow to know precisely the degree of filling of the article by the liquid emitted, being essentially binary and perme. t to visualize whether or not there is urine.
    [0002] International application WO 2013/114273 describes a. absorbent pad with a skin contacting surface comprising two draining layers separated by a hydrophobic barrier film having at least one aperture, an absorbent layer and an electrical liquid sensing means, comprising an array of electrodes. The structure described in this document allows to visualize through an electronic display the filling rate of a dressing for example. The hydrophobic barrier film preferably comprises a single perforation, located in the same axis as the underlying wound. The detection device described in this document is too expensive and complex to be integrated into single-use and wide-spread articles such as dressings, diapers or personal care products. The present invention aims to provide an absorbent article, the filling is preferably made relatively homogeneous, and having at least one means for visualizing the evolution of this filling. The object of the invention is, according to one of its aspects, an article to be applied to the skin, the mucous membranes or a wound, in order to absorb a liquid, in particular an exudate, comprising: a distal absorbent layer, a or a plurality of visual indicators changing appearance when in contact with the liquid, where the visual indicators are in contact with the distal absorbent layer, an interface for contacting skin or mucous membranes, between the interface and the distal absorbent layer, at least one proximal absorbent layer, adjacent to the interface, between the proximal absorbent layer and the distal absorbent layer, at least one water barrier layer provided with at least one passage allowing the fluid having passed through the proximal absorbent layer to gain the distal absorbent layer. Preferably, the barrier layer is constituted by a film of an impermeable material, in particular a thermoplastic material, in particular polyurethane, for example a film such as that sold by the company PLASTO under the designation P1166. Preferably, the water barrier layer is permeable to water vapor. Thus, the barrier layer preferably has a permeability to water vapor greater than or equal to 500 Wm2 / 24h, measured according to the standard NF EN 13726-2. In general, the permeability to a gas, or even water vapor, allows better aeration of the wound. The aforementioned passage is preferably eccentric. This provides a better distribution of the liquid within the article, forcing the liquid to be distributed within the proximal absorbent layer before passing into the distal absorbent layer. In particular, this tends to prevent the absorbed liquid from being distributed around a single axis, as in the case where there is a central passage located in front of the source of the liquid, and this allows a finer indication of the level of filling the article pax or visual indicators in contact with the distal absorbent layer.
    [0003] The passage is thus preferably single, which makes it possible to better predict and control the distribution of the liquid. Preferably, the passage or passages each have a larger transverse dimension of between 100 μm and 1 cm, more preferably between 100 and 5 min. This or these passages may be of circular section.
    [0004] The thickness of the barrier layer may be between 20 inn and 1001.1m. The barrier layer may be unique; alternatively, the article comprises a plurality of impermeable layers, for example laminated together.
    [0005] Absorbent The absorbent distal and proximal layers each preferably have a water absorption capacity greater than or equal to 500 g / m 2, more preferably 800 g / m 2. They may comprise or consist of any material capable of storing liquids, such as materials used in the field of hygiene and dressings.
    [0006] The proximal or distal absorbent layer preferably comprises a hydrophilic porous foam, preferably a polyurethane foam, at least one. the image for example of that marketed by the URGO laboratories under the name Cellosorb 41 or the one known under the name MCOF.03 and marketed by the company Advanced Medical Solution (AMS). The proximal absorbent layer is a storage layer of the absorbed liquid.
    [0007] The material of the proximal absorbent layer and its thickness are preferably selected so that the water absorption capacity of the proximal absorbent layer is greater than the absorption capacity of the distal absorbent layer. The thickness of the proximal absorbent layer is, for example, between 1 and 5 μm. The water absorption capacity of the proximal absorbent layer is preferably 2-fold greater than that of the distal absorbent layer, more preferably at least 5-fold greater. This avoids creating a pumping effect and preserving the essential C; in the proximal absorbent layer. In this way, the proximal absorbent layer is filled before the distal absorbent layer is completely filled. The distal absorbent layer is intended to detect the filling level of 1 '. The key is not to store the majority of the absorbed liquid. In particular, it is desirable not to saturate the distal absorbent layer too quickly and not to react all the visual indicators until the proximal absorbent layer is completely filled. The proximal and distal absorbent layers may also comprise materials based on superabsorbent polymer (SAP), such as, for example, absorbent nonwovens incorporating SAP particles commonly used in the hygiene field, absorbent textiles such as, for example nonwovens based on viscose, rayon or cellulose, such as for example a wadding, or hydrogels. The use of nonwovens obtained by the dry method of manufacture, known as the aerodynamic route or "airlaid", which contain SAP particles and on the other hand, is preferred. Between 20 and 60% by weight of SAP relative to the total weight of nonwoven. The proximal absorbent layer may thus be formed by a non-woven superabsorbent material, for example such as that marketed by EAM Corporation under the reference Novathin s1. This gives a high absorption capacity. Alternatively, a material consisting of two cellulosic webs between which superabsorbent polymer particles are incorporated alone or in combination with binders is used as the SAP material. According to another variant, a material based on SAP fibers alone or in combination with non-absorbent fibers is used. Preferably, this material is in the form of a nonwoven. Visual Indicators Preferably, the article includes a plurality of discrete visual indicators. This makes it possible to identify the presence of liquid at different points of the distal absorbent layer, and thus to refine the quantification of the liquid absorbed by the article. We thus have an article allowing a progressive visualization of its fill rate, which gives information representative of the saturation level of the article at any time. These indicators are distributed in the distal absorbent layer, or on the outer surface thereof, such that they are visible when the article is applied against the skin. In addition to the interest shown for a dressing, an article according to the invention makes it possible to define the volume of urine secretion dispensed by the young infant, by visualizing the level of saturation of the absorbent article. This can facilitate the analysis of the level of dehydration of the infant. The visual indicators are preferably arranged with a constant spacing in at least one direction, for example in the form of a grid, in particular with a spacing between 5 mm and 2 c between the centers of two indicators. The visual indicators consist, for example, of pellets deposited on the distal absorbent layer, but may also be deposited by printing, by coating, or in the form of a layer having disparities in the concentration of a compound producing a color in contact with the surface. 'water. The visual indicators can be separated from each other by air or hydrophobic material which can help to keep the indicators in place, if necessary, especially when it comes to pellets. Each pellet may be in contact with a porous and water-permeable confinement matrix. The visual indicators are, for example, colored indicators capable of changing color depending on the degree of hydration of the absorbent layer portion distal to their contact. They may also be pellets of two colorless compounds, at least one of which is soluble in the absorbed liquid, which react with each other to form a colored product when at least one passes in solution in the presence of liquid. Alternatively, the compound (s) used to make each visual indicator are initially colored, and it is the product formed after coming into contact with the liquid that is colorless or changes color. It can also be this. several acid-base compounds of substantially neutral pKa whose acid form does not have the same color as the basic form. This or these compounds may be coupled to a weak acid and / or a weak base which goes into solution in the presence of liquid. It may also be one or more slightly oxidizing and / or reducing compounds. The color of the visual indicators is preferably generated by absorption in the visible spectrum, so as to allow evaluation of the fill rate of the article without the need for additional equipment, such as an ultraviolet lamp. The color produced by a visual indicator can correspond to different shades depending on the amount of liquid absorbed by the article, which allows a progressive monitoring of the fill rate of the article. For example, the color may change from white to light red, then from light red to vermilion, from vermilion to blood red, and from blood red to burgundy, depending on the degree of water saturation. An example of a visual indicator, taking different hues according to the quantity of liquid absorbed, is known under the reference HB Fuller full care 9390. The number of visual indicators ranges, for example, from 1 to 100. The article may comprise graduations, for example printed, which are associated with at least some visual indicators and which provide information on the corresponding fill rate. Other Wipes The interface with the skin or the mucous membranes may be defined by a contact layer, for example comprising a textile weave. The contact layer is preferably microadherent. For example, it is a textile web coated with a gel, as described in documents WO201240378 or WO201240377.
    [0008] By microadherent contact layer is meant that it can be fixed temporarily on the wound, this layer can be removed without the structure of the wound or peri-lesional skin is altered, so that said layer is repositionable and facilitates day-to-day care. The article may comprise, between the contact layer and the proximal absorbent layer, at least a first distribution layer. Indeed, it is desirable that the liquid be distributed as well as possible, in order to store more liquid in the absorbent layer proxi e while avoiding a liquid reflux to the skin, the wound or the mucous membranes in contact with the article. In addition, it is desirable that the liquid be homogeneously distributed so that the amount of liquid absorbed can be reliably ascertained by the amount of liquid passing through the distal absorbent layer. The article may also comprise, between the proximal absorbent layer and the impermeable layer, a second distribution layer. This further improves the distribution of the liquid in the proximal absorbent layer. The absorption capacity of the distribution layers is relatively low compared to. that of the proximal absorbent layer, preferably between 5 and 10 times lower. In the case where the key has a second distribution layer in contact with the barrier layer and the proximal absorbent layer, it is ensured that the liquid can not pass directly from the second distribution layer to the layer. absorbent distal, but flows from the second distribution layer to the proximal absorbent layer, and then from the proximal absorbent layer to the distal absorbent layer. For this purpose, the second repetition layer may be made locally hydrophobic, in particular by coating with an occlusive material, for example thermoplastic, for example PVC optionally dissolved in a suitable solvent, such as acetonitrile, at an area located at the periphery of the passage (s). In a variant, the second distribution layer has an aperture opposite each of the passages. The section of each of these openings is preferably greater than that of the corresponding passage. The distribution layer or layers may consist of materials allowing the spreading of liquids by transverse or longitudinal diffusion and / or both. Such layers are for example hydrophilic textile or nonwoven materials based on polyester fibers or polyolefins. By way of example, mention may be made of the products marketed respectively by the companies ORSA and FREUDENBERG under the names Jettex 114 1205c and Evolon. The article may also comprise an outer protective layer, preferably leaving all the observable visual indicators. and thus non-opaque, superimposed on the distal absorbent layer. This outer protective layer is preferably impermeable to water, and has a water vapor permeability greater than or equal to 500 g / m2 / 24h. Such outer layers of protection are commonly used in the production of dressings and are for example made of polyurethane films such as films marketed by Exopack Advanced Coating under the designation INSPIRE. This protective layer is preferably translucent. The protective layer can be assembled to the rest of the article by means of an adhesive, preferably discontinuous, so as not to affect the permeability of the layer to water vapor.
    [0009] The article is preferably a dressing, in particular packaged in the sterile state. The invention may be better understood on reading the following detailed description, non-limiting examples of implementation thereof, and on examining the appended drawing, in which: FIG. 1 is a sectional view, schematic and partial, of an article made according to the invention, - Figure 2 is a view similar to Figure 1 of an alternative embodiment, - Figure 3 is a sectional view according to the FIG. 4 shows the evolution of the amount of colorimetric marker having changed color as a function of the saturation level of the reservoir of an article according to the invention; FIGS. 5A and 5B are FIGS. 6 and 6 are similar to FIGS. 1 and 2, and FIG. 7 is a section similar to that shown in FIG. of FIG. 4 in the case of another article according to the invention, FIGS. 8 to 10 are anal views FIG. 1 is a section according to XI-XI of FIG. 10. In the figures, the real proportions of the various constituent elements have not always been respected. , for the sake of clarity of the drawing. Some elements have not been represented in contact, when in reality they are. In addition, certain constituents, for example ésifs, may not have been represented. The absorbent article 1 according to the invention, shown in Figure 1, is to be applied by a proximal face 2 on the healthy or damaged skin, and / or on the mucous membranes. This is preferably a dressing, but the following description also applies to another article, such as a diaper or an article of personal hygiene. The article 1 comprises one or more absorbent layers capable of accumulating the liquid received by the proximal face 2, for example the exudate of a wound. The article 1 thus comprises, as illustrated, a first absorbent layer 20, called the proximal absorbent layer or reservoir, which extends parallel to the proximal face 2, in both dimensions, namely the length of the article and its width when the article has an elongated shape. The proximal absorbent layer 10 extends over a thickness e which is preferably constant and greater than or equal to 1 mm. The contact with the skin or the mucous membranes can be defined by an interface layer 30 whose proximal face 2 extends under the proximal absorbent layer 10. The article 1 also comprises a second absorbent layer 20, called the distal absorbent layer. which preferably extends to the same extent as the proximal absorbent layer 10. An impermeable, water-impermeable intermediate layer 40 extends between the proximal and distal absorbent layers 20. This intermediate layer 40 is provided with at least one passage 41 allowing the liquid contained in the proximal layer 10 to gain the distal layer 20. This passage is made for example in the form of a hole through the material of the intermediate layer 40. The intermediate layer 40 may comprise several passages 41, arranged for example as shown in Figure 3, each half-length of one side, and closer to this side than the center of the article. The passage or passages 41 may all have the same largest transverse dimension t. In particular, the passage or passages 41 may have circular sections of diameter t between 100 Ft, m and 5 mm. The passages 41 can respect in their arrangement an axial symmetry, but other arrangements are possible. Article 1 comprises a plurality of visual indicators 50, visible when the eye is in place on the body, in order to allow the observer to evaluate the degree of filling of the key 1 and the need These indicators 50 are preferably, as illustrated, distributed discretely on the surface of the distal absorbent layer 20, for example in a matrix arrangement as illustrated in FIG. depending on the arrangement of the passage or passages 41 passing through the impermeable layer 40, so that the number of visual indicators 50 having changed appearance due to the presence of liquid is as accurately as possible representative of the degree The repetition of the indicators 50 can also be done according to a grid with a distance W between the indicators constant in at least one direction, the distance W being for example understood. between 5 mm and 2 cm, in particular of the order of 1 cm. The key 1 is advantageously covered with an outer protective layer 60, protecting the distal absorbent layer 20 from the external medium. The protective layer 60 is for example made of a thermoplastic material, in particular polyurethane, and preferably has a water vapor permeability greater than 500 g / m 2 / 24h, so as not to prevent the evaporation of the liquid. stored and breathing of the skin. The protective layer 60 is joined to the rest of the article by any suitable means, preferably by means of a discontinuous adhesive, not shown.
    [0010] When using the article 1, the liquid that fills the proximal absorbent layer 10 gains through the passages 41 the distal absorbent layer 20. The visual indicators 50 change in appearance as the liquid extends into F. distal absorbent layer 20.
    [0011] In order to homogenize the distribution of the liquid, the article 1 may comprise replication layers 71 and 72 respectively located below and above the proximal absorbent layer 10, as illustrated in FIG. distribution 71 and 72 is not to store liquids but to promote their spreading.
    [0012] The distribution layers 71 and 72 are preferably less absorbent on the one hand than the proximal absorbent layer 10 and on the other hand the distal absorbent layer 20. Thus, 71 and 72 preferably have a water absorption capacity of less than 500 g / m 2.
    [0013] Preferably, the thickness of each of these layers 71 and 72 is between 50 and 500 μm, preferably between 250 μm and 500 μm. More preferably, each distribution layer 71 or 72 comprises or consists of a layer of a hydrophilic material. The replicating layers 71 and 72 may be used for absorbent fiber materials of plant origin, such as viscose, cellulose or its derivatives. These materials may be in the form of knits, wovens or nonwovens, obtained by the dry method or wet process, such as paper. In order to evaluate the performance of a 1i of 1 according to the invention, the saturation level of the proximal absorbent layer 10 was measured as a function of the number of indicators 50 having been activated, for an article having the structure represented in FIG. FIG. 2. The results are shown in FIG. 4. In this example, the interface 30 consists of a Bérotex-type nonwoven, the absorbent layers 10 and 20 consist of polyurethane foam and have respective thicknesses of 4 and 2 mm, the impervious layer 40 consists of a polyurethane film, and the key has two distribution layers 71 and 72 in a hydrophilic non-woven Berkshire type DR870 S. The indicators 50 used are colored indicators The external protective layer 60 is a polyurethane film, optionally coated with an adhesive mass such as an acrylic adhesive, or a silicone. set at 100 ° C / min on a sinter of 3 cm in diameter, so as to simulate a medium-sized wound. The dressing is square in shape, 81 cm2 in extent. An overpressure of 15 mbar relative to the atmospheric pressure is applied to the dressing. The proximal absorbent layer was weighed regularly so as to correlate the number of indicators that were activated with the saturation level of that layer. Photographs of the indicators are made regularly to evaluate the number of indicators that have been activated. It can be seen in Figure 4 that the progression of the number of indicators having changed appearance is an indicator of the saturation rate. Attention is now given to the exemplary embodiments shown in FIGS. 5A, 5B and 6. In order to ensure that the emitted liquid is transferred into the distal absorbent layer 20 only by the proximal absorbent layer 10, and not by the second layer 72, the distribution layer 72 may be coated with a barrier material 42 from the second distribution layer 72 at the passage 41, as shown in FIG. 5A. These are, for example, PVC dissolved in acetonitrile, a PDMS silicone Sylgar 184 from Dow Corning, or a polymerizable resin of Hoechst AZ4620, Hoechst 562, Shipley 1400-17, Shipley 1400-27 or Shipley type. 1400-1437. The barrier material 42 blocks the transfer of the liquid into the distal absorbent layer 20.
    [0014] This allows delaying the onset of the first color indicators and refine the fill measurement for higher saturation levels of the proximal absorbent layer. In the variant illustrated in FIG. 5B, the second distribution layer 72 comprises an opening 73 facing the passage 41 and its periphery, so as to prevent the direct propagation of the liquid from the distribution layer 72 towards the the absorbent layer distal 20 through the passage 41. 1.1 * We see in Figure 6 the passage 41 may be unique and located near a corner 74 of the article, being closer to this corner than the center of the article. FIG. 7 traces a similar evolution to FIG. 4, in the case where the passage 41 is eccentric, as in FIG. 6. It is noted that for the low filling rates, in particular less than 30%, the number of indicators having appearance is less important and when the passage is eccentric. Eccentring the liquid passage delays the activation of the first indicators. The barrier material 42 extends for example in the width and length direction of the article over a distance of at least twice the largest dimension t of the passageway 41. Comparative tests The configurations illustrated in FIGS. 11 represent structures aimed at highlighting certain advantages brought by particularities of realization.
    [0015] The structure shown in FIG. 8 corresponds to an article not in accordance with the invention comprising only a single absorbent layer 10 disposed between and in contact with two lower distribution layers 71 and 72. The lower distribution layer 71 is in contact with a source emitting liquid E, and the upper distribution layer 72 carries a plurality of visual indicators 50. This configuration which is characterized in particular by the absence of the impermeable layer induces an early activation of the indicators 50. The structure illustrated in FIG. 9 differs from that of FIG. 8 in the presence of a distal absorbent layer 20, added between the upper distribution layer 72 and the visual indicators 50. This configuration makes it possible to better monitor the filling of the However, the liquid begins to be distributed between the two absorbent layers 10 and 20 as soon as the liquid This distribution accelerates the filling of the distal absorbent layer 20, which has the effect of activating the visual indicators 50 too quickly, in a way that is not representative of the filling rate of the proximal absorbent layer. 10.
    [0016] This highlights the advantage of the barrier layer 40 of a structure according to FIG. 10, which corresponds to a structure according to the barrier structure 40 of a hydrophobic material having a passage 41 at its center is added to the structure of FIG. 9, between the upper distribution layer 72 and the distal absorbent layer 20. This structure makes it possible to better follow the filling of the proximal absorbent layer 10. However, the position central passage 41 allows the liquid to pass into the distal absorbent layer before the proximal absorbent layer is completely wetted: this configuration tends to induce an axial distribution of the absorbed liquid and early activation of the indicators 50. It has been shown in FIG. 11 the distribution of the visual indicators 50 in this configuration. The test 10 corresponding to Figure 10 shows the advantage of an eccentric positioning or passages 41 when the fluid source is central. The invention is not limited to the examples that have been described. In p. In particular, the various layers may comprise other materials than those mentioned, chosen from those usually used in the manufacture of dressings, diapers, personal hygiene articles, and absorbent articles in general. arrangement and organization of the different passages 41 can be adapted according to the geometry of the article and the expected positioning of the liquid source in order to optimize its performance as well as the choice of visual indicators and their distribution can be modified without departing from the scope of the invention.
    [0017] The term "comprises" is synonymous with "contains at least one" unless the contrary is stated.
    权利要求:
    Claims (22)
    [0001]
    REVENDICATIONS1. Article (1) to be applied to the skin, mucous membranes or wound, to absorb a liquid, especially an exudate, comprising: - distal absorbent layer (20), - one or more visual indicators (50) changing appearance in in case of contact with the liquid, this or these visual indicators (50) is in contact with the distal absorbent layer (20), - an interface (30) intended to contact the skin or the mucous membranes, - between the interface (30) ) and the distal absorbent layer (20), at least one proximal absorbent layer (10) adjacent to the interface (30), - between the proximal absorbent layer (10) and the distal absorbent layer (20), at least one layer water barrier (40) having at least one passage (41) allowing the liquid that has passed through the proximal absorbent layer (10) to reach the distal absorbent layer (20).
    [0002]
    2. Article according to claim 1, said at least one passage (41) being eccentric.
    [0003]
    3. Article according to one of claims 1 or 2, the passage (41) being unique.
    [0004]
    4. Article according to any one of claims 1 to 3, the or passages (41) each has a greater transverse (t) ion between 100 and 1 cm, better between 100 gm and 5 mm.
    [0005]
    5. Article according to any one of the preceding claims, comprising a plurality of discrete visual indicators (50).
    [0006]
    6. Article according to the preceding claim, the visual indicators (50) being arranged with a constant spacing in at least one direction, in particular with a spacing (W) between 5 mm and 2 cm.
    [0007]
    7. Article according to any one of the preceding claims, wherein the visual indicator or indicators (50) consist of pellets deposited on the distal absorbent layer.
    [0008]
    8. Article according to any one of the preceding claims, the visual indicators (50) being separated from each other by a hydrophobic material.
    [0009]
    9. A key according to any one of the preceding claims, the distal absorbent layer (20) comprising a hydrophilic porous foam, preferably a polyurethane foam.
    [0010]
    10.. A method according to any one of the preceding claims, wherein the barrier layer (40) is made of a film of impermeable material, especially a film of a thermoplastic material, in particular polyurethane.
    [0011]
    An article according to any one of the preceding claims, the absorbent proximal layer (10) comprises a foam of a porous hydrophilic material, especially polyurethane.
    [0012]
    12.. The invention of any one of the preceding claims, wherein the water absorption capacity of the proximal absorbent layer (10) is greater than. that of the distal absorbent layer (20), in particular at least 2 times greater, better at least 5 times greater.
    [0013]
    13. Article according to any one of the preceding claims, the interface (30) being defined by a contact layer, preferably consisting of a nonwoven.
    [0014]
    14. Article according to the preceding claim, compo t between the contact layer and the proximal absorbent layer (10) at least a first distribution layer (71).
    [0015]
    15. Article according to the preceding claim, comprising between the proximal absorbent layer (10) and the barrier layer (40) a second distribution layer (72).
    [0016]
    16. 'Key according to the preceding claim, the second distribution layer (72) being made locally hydrophobic, in particular by PVC coating, at a zone (74) located vis-à-vis the periphery of or passages (41).
    [0017]
    17. Article according to claim 15, the second distribution layer (72) having an opening (73) vis-à-vis the passage (s) (41).
    [0018]
    18. Article according to any one of claims 14 to 17, the distribution layer or layers (71,72) comprising a hydrophilic textile or nonwoven, especially based on polyester fibers or polyolefin fibers.
    [0019]
    19. Article according to any one of the preceding claims, the barrier layer (40) having a water vapor permeability greater than or equal to 500 g / m2 / 24h.
    [0020]
    20. ide according to any one of the preceding claims, comprising a protective layer (60), superimposed on the distal absorbent layer (20), impermeable to water and having a water vapor permeability ofpreferior to 500 g / m2 / 24h, in particular comprising polyurethane, this protective layer preferably being translucent.
    [0021]
    21. Article according to the preceding claim, the protective layer (60) being assembled to 1''by means of an adhesive, preferably discontinuous.
    [0022]
    22. The composition according to any one of the preceding claims, being a dressing, is packaged in the sterile state.
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    同族专利:
    公开号 | 公开日
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    CN106456415A|2017-02-22|
    CA2934029A1|2015-06-25|
    EP3082700A1|2016-10-26|
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    CN105963074B|2011-07-14|2020-01-17|史密夫及内修公开有限公司|Wound dressing and method of treatment|
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    法律状态:
    2015-12-29| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-30| PLFP| Fee payment|Year of fee payment: 4 |
    2017-12-29| PLFP| Fee payment|Year of fee payment: 5 |
    2019-12-31| PLFP| Fee payment|Year of fee payment: 7 |
    2020-12-28| PLFP| Fee payment|Year of fee payment: 8 |
    2021-12-31| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1363022A|FR3015228B1|2013-12-19|2013-12-19|ARTICLE TO BE APPLIED ON THE SKIN, MUCOSES OR A WOUND|
    FR1363022|2013-12-19|FR1363022A| FR3015228B1|2013-12-19|2013-12-19|ARTICLE TO BE APPLIED ON THE SKIN, MUCOSES OR A WOUND|
    EP14830622.8A| EP3082700B1|2013-12-19|2014-12-11|Article to be applied against the skin, mucous membranes or a wound|
    US15/106,462| US20160331593A1|2013-12-19|2014-12-11|Article to be applied against the skin, mucous membranes or a wound|
    CA2934029A| CA2934029A1|2013-12-19|2014-12-11|Article to be applied against the skin, mucous membranes or a wound|
    PCT/IB2014/066789| WO2015092629A1|2013-12-19|2014-12-11|Article to be applied against the skin, mucous membranes or a wound|
    JP2016560054A| JP2017502801A|2013-12-19|2014-12-11|Articles applied to the skin, mucous membrane or wound|
    CN201480069972.4A| CN106456415A|2013-12-19|2014-12-11|Article to be applied against the skin, mucous membranes or a wound|
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