US 12,213,862 B2
Interface dressing
Stéphane Auguste, Ruffey les Echirey (FR); Michel Lamoise, Bessey les Citeaux (FR); Anne-Sophie Danerol, Dijon (FR); and Erwann Doulin, Pluneret (FR)
Assigned to URGO RECHERCHE INNOVATION ET DEVELOPPEMENT, Chenove (FR)
Appl. No. 16/629,129
Filed by Urgo Recherche Innovation et Developpement, Chenove (FR)
PCT Filed Jul. 11, 2018, PCT No. PCT/FR2018/051745
§ 371(c)(1), (2) Date Jan. 7, 2020,
PCT Pub. No. WO2019/012226, PCT Pub. Date Jan. 17, 2019.
Claims priority of application No. 1756599 (FR), filed on Jul. 12, 2017.
Prior Publication US 2020/0138630 A1, May 7, 2020
Int. Cl. A61F 13/00 (2024.01); A61F 13/01 (2024.01)
CPC A61F 13/01017 (2024.01) [A61F 13/01038 (2024.01)] 23 Claims
OG exemplary drawing
 
1. An interface dressing consisting of an elastomeric matrix, the elastomeric matrix being provided with a plurality of through-holes, each through-hole having a contour about a central axis,
wherein at least one part of the plurality of through-holes is arranged so as to form at least one pattern wherein each through-hole is adjacent to at least one other through-hole, the adjacent through-holes having rectangular contours, images of which, when moved translationally in a plane perpendicular to the central axes in order to merge images of said central axes by means of said translational movement, do not become superimposed,
wherein, in absence of external strain, the interface dressing has:
a thickness of between 0.4 mm and 2 mm,
a yarn width between two adjacent through-holes of between 0.3 mm and 4 mm,
a grammage of between 200 g/m2 and 1200 g/m2,
wherein, in absence of external strain, each through-hole has a length of between 2 mm and 4 mm and a width of between 1 mm and 2 mm,
wherein lateral edges of the interface dressing remain straight under an applied tensile force test,
wherein the applied tensile force test is conducted by means of a tensile testing machine on a sample of the interface dressing having a width of 10 cm and applying a tensile force in a direction of stretching parallel to a length of the sample at a speed of 100 mm/min with a distance between jaws of 5 cm up to an elongation of 70% of elongation at break, holding the sample at the elongation, and observing the lateral edges,
wherein the elastomeric matrix consists of an elastomeric composition, the adjacent through-holes of the pattern being separated from one another by a yarn of elastomeric composition,
wherein the elastomeric composition comprises a blend of two copolymers, and
wherein the blend comprises at least one copolymer which has a viscosity of between 0.01 and 1 Pas measured in a solution at 5% mass/mass in toluene and at least one copolymer having a viscosity of between 0.01 and 0.5 Pas measured in a solution at 15% (mass/mass) in toluene.