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JP-2026514494-A - Elastic wound dressings/skin closure materials and assemblies

JP2026514494AJP 2026514494 AJP2026514494 AJP 2026514494AJP-2026514494-A

Abstract

The elastic, flexible, and adaptable material 12 comprises a base material 16a, a top layer 16 having upper piles 16b and lower piles 16c extending from opposing surfaces of the base material, and an adhesive layer 18 operatively connected to the top layer, the adhesive layer comprising a silicone gel 18a. Devices such as wound dressings or wound closures, protective barriers, wound dressing covers, compression wraps, attachable anchor points, barriers, or insulators can be formed from the material. Such devices are capable of generating electrostatic charges that can promote wound healing. [Selection Diagram] Figure 1A

Inventors

  • ガルビエルツ， トーマス
  • ガルビエルツ， マイケル

Assignees

  • ウルトラ ウンド ケア エルエルシー

Dates

Publication Date
20260511
Application Date
20240424
Priority Date
20230425

Claims (20)

  1. An elastic, flexible, and adaptable material 12, The structure comprises a top layer 16, the top layer comprising a base material 16a, an upper pile 16b extending from the upper surface of the base material, and a lower pile 16c extending from the lower surface of the base material, the base material having flexibility and elasticity. A material comprising an adhesive layer 18 containing a silicone gel 18a, wherein the silicone gel is functionally bonded to the lower pile 16c by binders 18b, 19a, and the binders are selected to be binders that bond to the silicone gel.
  2. The material according to claim 1, further comprising a reinforcing layer 19 between the top layer 16 and the silicone gel layer 18a, wherein the reinforcing layer is preferably formed from a polyurethane film or polyethylene film, the reinforcing layer 19 is fixed to the top layer 16 by a second binder 19a, the binder 18b of the adhesive layer 18 bonds the silicone gel layer 18a to the lower surface of the reinforcing layer 19, and the top layer and the silicone gel layer are collinear when stretched.
  3. The reinforcing layer has the same extent as the top layer, according to claim 2.
  4. The material according to any one of claims 1 to 3, wherein the material includes a plurality of perforations extending through at least the silicone gel and the reinforcing layer (if present).
  5. The perforations have a diameter of approximately 0.5 mm to 3 mm, preferably approximately 1 mm to 2.8 mm, and preferably approximately 2 mm; the perforations are preferably spaced about 3 to 8 mm apart, and preferably about 5 mm apart, and the perforations can provide ventilation to a device formed from the material and/or provide capillary action that allows fluid to pass through at least the silicone gel and the reinforcing layer (if present), according to claim 4.
  6. The material according to claim 4 or 5, wherein the perforations are arranged in rows, and the rows are spaced approximately 3 to 8 mm apart, preferably approximately 5 mm apart.
  7. The material according to claim 6, wherein the perforations in the row are arranged in a column, or the perforations in one row are offset relative to the perforations in an adjacent row.
  8. The elastic flexible material according to any one of claims 1 to 7, wherein the upper pile 16b includes loops or fibers extending from the upper surface of the base material 16a, and the lower pile 16c includes loops or fibers extending from the lower surface of the base material.
  9. The elastic and flexible material according to any one of claims 1 to 8, wherein the base material is composed of natural fibers, or artificial/synthetic fibers such as nylon, spandex, Lycra, carbon fibers, stretched polytetrafluoroethylene (i.e., Gore-Tex®), polyurethane, polyethylene, and combinations thereof.
  10. The elastic flexible material according to claim 9, wherein the base material comprises nylon, preferably comprising 50/17 SD nylon and 20/1 SD nylon, and preferably the base material has a composition of about 69% 50/17 SD nylon and about 21% 20/1 SD nylon, but is not limited thereto.
  11. The elastic and flexible material according to any one of claims 1 to 10, wherein the upper pile and lower piles 16b and 16c have the same composition as the base material 16a.
  12. The elastic and flexible material according to any one of claims 1 to 11, wherein the adhesive layer 18 may contain an antibacterial agent and/or an antimicrobial agent, and the agent can be applied to the incision or wound and its surrounding area by application of a device formed from the material.
  13. The material according to any one of claims 1 to 12, wherein the adhesive layer 18 includes a series of dots, lines, or patterns defining areas having an adhesive coating having equal or different coat weights and tackiness.
  14. The material according to any one of claims 1 to 13, wherein the material 12 is adapted to generate a triboelectric charge on the top layer 16 during use of a device formed from the material, which can then be accumulated and transferred to the wound site.
  15. The material according to claim 14, wherein the silicone gel 18a is neutral or nearly neutral in terms of static charge, and the static charge must pass around the silicone gel of the adhesive layer in order to reach and affect the wound.
  16. The material according to claim 14 or 15, wherein the device formed from the material 12 acts as a triboelectric nano-generator when applied to the skin.
  17. The elastic flexible material according to any one of claims 1 to 16, wherein the flexible material 12 is part of an assembly 10, and the assembly includes a removable liner 14 that is removably bonded to the adhesive layer 18 of the material 12.
  18. The elastic and flexible material according to any one of claims 1 to 17, wherein the material has elastic memory after stretching, and when removed from a surface, the material substantially returns to its original shape, and the material can be applied to a protective sheet such as a removal liner.
  19. The material comprises two or more layers on the adhesive layer, as described in any one of claims 1 to 18.
  20. The material according to any one of claims 1 to 19, wherein the material is transparent to ultrasonic energy and is adapted for use in conjunction with ultrasonic technology.

Description

[Cross-reference of related applications] This application claims priority to U.S. Application No. 63/498141, filed on 25 April 2023, the contents of which are incorporated herein by reference. This application relates to wound care, and more particularly to materials that can be applied directly to wounds and the area surrounding them for use as wound dressings or wound closures, materials that can be applied on wound dressings for use as wound dressing covers, or materials that complement existing technologies. In U.S. Publication No. 2023/0046036, incorporated herein by reference, a wound care dressing cover comprising a top fabric ply, a silicone gel layer beneath the top layer, and a removal liner beneath the silicone gel layer is disclosed. The silicone gel is bonded to the top fabric ply by a binder such as an acrylate adhesive, and the removal liner is removably bonded to the silicone gel by the silicone gel's natural adhesive properties. In a preferred embodiment, fibers extend from beneath the top layer into the binder to further enhance the attachment of the silicone layer to the top layer. This is a schematic perspective cross-sectional view of a preferred embodiment of a flexible material assembly.This is a schematic cross-sectional view of an enlarged section of a flexible material assembly taken at circle B in Figure 1A, where a reinforcing layer has been added.This is an enlarged schematic cross-sectional view of a flexible material assembly taken at circle 1C in Figure 1B. It is similar to Figure 1B, but the removal liner has been removed from the material.This is a micrograph of a cross-section of the material assembly shown in Figure 1A.These are schematic diagrams of material assemblies with and without reinforcing layers (Figure 1F and Figure 1E), showing various layers/components of the material assemblies.These are schematic diagrams of material assemblies with and without reinforcing layers (Figure 1F and Figure 1E), showing various layers/components of the material assemblies.This is a schematic plan view of a device formed from a material assembly having a central portion surrounded by an adhesive-free edge, and multiple holes or pores in the adhesive layer and reinforcing layer.Figure 2A is a schematic cross-sectional view of the device.This is a schematic cross-sectional view of a strip of flexible material formed on a wrap, showing that the material adheres to itself.This is an enlarged view of Figure 2A, taken along circle 2B in Figure 2A.This is a micrograph taken at circle 2B in Figure 2A, showing the material adhering to itself.This is a plan view of a flexible tensile member for use with flexible materials.This is a side view of the tensile member. The corresponding reference numerals are used throughout multiple figures in the drawing. The following detailed description illustrates the claimed invention, without limitation, by example. This description clearly enables those skilled in the art to manufacture and use the claimed invention, describing several embodiments, adaptations, variations, substitutions, and uses of the claimed invention, including those considered to be the best current mode of implementation. Furthermore, it should be understood that the application of the claimed invention is not limited to the configuration details and arrangement of components shown in the following description or in the drawings. Other embodiments of the claimed invention are possible and can be implemented or performed in various ways. Also, it should be understood that the expressions and terms used herein are for illustrative purposes only and should not be considered limiting. For example, flexible material assemblies 10 that can be used as wound dressings, wound dressing covers, or compression wraps are illustrated in Figures 1A–1C, 1E, and 1F. As described below, the material assembly 10 comprises a flexible material 12 having an adhesive underside and a removable liner 14 removably bonded to the underside of the material 12. The material 12 is preferably elastic and stretchable in all directions. Similar to the material shown and described in U.S. Publication No. 2023/0046036, the material 12 may be used to close a wound, or applied directly to or above the wound or its periphery, on or around the wound, or over a wound dressing. However, as described below, the materials disclosed herein have additional functionality. In particular, the materials may be used alone or as a complement to conventional closure methods. The flexible material assembly 10 (Figures 1A and 1B) is a multilayer assembly comprising a flexible material 12 and a removable liner 14 detachably fixed to the underside of the flexible material 12. As described below, the flexible material 12 may be used to close a wound, or applied over and/or adjacent to a wound (i.e., over the periphery of the wound) or over a wound dressing (and thus may be used as a wound covering), or may be used to wrap, for example,