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Composite material for fluid flow management

A technology of composite materials and absorbent materials, applied in the field of composite materials for fluid flow management, which can solve problems such as fluid flow obstruction, dressing leakage, and wound exudate transmission hindrance, to improve fluid delivery and eliminate cross-section effects

Active Publication Date: 2019-11-19
MOLNLYCKE HEALTH CARE AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, said interface between these two layers presents a barrier to fluid flow and thus the transport of wound exudate away from the wound (and the fibrous layer in direct contact with it) to the foam storage layer
[0005] In a clinical setting, this could mean that not enough fluid is being transferred to the foam layer, which causes the entire dressing to leak when the gel-forming fibrous layer reaches its maximum absorption

Method used

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  • Composite material for fluid flow management
  • Composite material for fluid flow management
  • Composite material for fluid flow management

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] materials used

[0117] (size 10×10cm; product code: REF 603301; LOT: 16064983; used before: 2019-05); by Commercially available from Health Care (absorbent fiber material);

[0118] Max (size 10×10cm; REF 603201-00; LOT 15108622; used before: 2018-09); by Commercially available from Health Care; (absorbent foam);

[0119] Display Mount TM Adhesive (Jet Adhesive; 140A02PL6; EXP2017 / 05; MSDS No. 27-7170-7 / 16.06.2014); commercially available from 3M.

[0120] Preparation of the embodiment

[0121] In two application steps, apply the spray adhesive from a distance of 20cm to Max products on the foam side. in will Allow the adhesive spray coat to rest for 30 seconds before applying the product to the adhesive coat by hand.

[0122] One way to estimate the amount of binder is by comparing the A thin plastic film (pre-weighed) was sprayed in the same manner as the Max product and the coated film was subsequently weighed. The adhesive coat weight was calc...

Embodiment 2

[0126] Example 2 - Absorbency / Liquid Distribution Test

[0127] Absorbency was tested using an inclined plane with an inclination angle of 60° according to the test method described in detail below. The purpose of the test method described is to determine the absorbency and liquid distribution of a material exposed to compression and gravity when the test liquid is added at a constant flow rate, eg one intent of the test is to simulate a wound treatment situation.

[0128] General description of the test method:

[0129] use as image 3 The shown inclined plane test device, wherein the test device includes a fixed inclined test plate 11 (typically made of resin glass) inclined at 60 degrees. Before starting the test, the following preparations were prepared: 1) a syringe pump was filled with the test liquid (solution A according to EN 13726-1), including the tube up to the outlet hole 16; 2) a test piece of 100×100 mm was cut; 3) using The thickness gauge measures the t...

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Abstract

The present invention relates to a composite material(and its manufacture)which composite comprises(i)a first layer comprising an absorbent fiber material that is in contact with the area of use on its first side, (ii) a second layer comprising an absorbent material, said second layer being arranged on the second side of said first layer, wherein a plurality of channels extends through the entirefirst layer, from said first side to said second side thereof, and further extends into at least a portion of said second layer. This composite is of particular use in wound treatment.

Description

Background technique [0001] Fluid management, including directing fluid flow, is of particular importance in a variety of applications, such as in personal hygiene products, cleaning systems, air and moisture control, and skin and wound care and therapy. [0002] Especially in wound care, hydrophilic materials are conventionally used in wound dressings to absorb and retain wound fluids, further especially hydrophilic foams, such as hydrophilic open cell polyurethane foams. Hydrophilic fibers, such as hydrophilic cellulose fibers, are also known in principle to be useful in wound treatment and also in fluid management / liquid handling. In the following, although the focus in terms of application is wound care and therapy, the composite material according to the invention can be used in all other conceivable fields of application, including the specific fields of application described above. [0003] In order to optimize liquid handling capabilities, wound pads in wound dressing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/00A61F13/36A61L15/22A61L15/42A61L15/60
CPCA61F13/36A61L15/425A61L15/60A61L15/26A61L15/42A61F13/01008A61F13/01029C08L75/04C08L29/04C08L1/26A61F13/0213A61F13/01042A61F13/01017B32B2266/122B32B5/022B32B5/245B32B7/12B32B23/048B32B2255/02B32B2262/0223B32B2262/0246B32B2262/04B32B2262/062B32B2266/0278B32B2305/022B32B2305/20B32B2307/728B32B2535/00B32B2556/00B32B5/18A61F13/01012
Inventor 埃里克·卡尔森
Owner MOLNLYCKE HEALTH CARE AB
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