Dressing
Inventors
Buan, John • Middaugh, Richard L. • Wojciechowski, Timothy • Lash, Thomas E.
Assignees
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Publication Number
US-12042569-B2
Publication Date
2024-07-23
Expiration Date
Abstract
A dressing includes a drape, a pressure-sensitive acrylic-based adhesive on a skin-facing surface of the drape, an island of absorbent material, a silicone gel backing film, and a silicone gel on the silicone gel backing film. The drape is a thin film capable of maintaining a negative pressure underneath the drape upon application of a vacuum. The island of absorbent material has a smaller area than the drape and is applied onto the skin-facing surface of the drape. The silicone gel backing film has a frame shape and a smaller footprint than the drape and a larger footprint than the island of absorbent material.
Core Innovation
The invention provides a negative pressure wound dressing in which a thin-film drape capable of maintaining a negative pressure underneath the drape upon application of a vacuum is used together with a pressure-sensitive acrylic-based adhesive on a skin-facing surface of the drape. An island of absorbent material smaller than the drape is applied onto the skin-facing surface to leave a first margin of adhesive-coated drape around the island of absorbent material.
A silicone gel backing film having a frame shape and a smaller footprint than the drape, but a larger footprint than the island of absorbent material, is affixed to the drape to leave a second margin of adhesive-coated drape around the silicone gel backing film. A silicone gel is provided on the silicone gel backing film at least substantially matching the frame shape of the silicone gel backing film surrounding the island of absorbent material, while leaving the second margin of adhesive-coated drape around the silicone gel.
The drape is a transparent film, and the silicone gel backing film is visible through the transparent film. The transparent drape and visible frame-shaped silicone gel arrangement are configured to support dressing placement while maintaining negative pressure underneath the drape.
Additional embodiments describe a vacuum source fluidly connected to a hole extending through the drape, and a casting sheet on which the drape was cast and which is kiss cut to define a casting sheet opening through which the island of absorbent material and the silicone gel are visible during placement of the dressing. The casting sheet can be removable after the drape is brought into contact with the skin.
Claims Coverage
The partial content includes three independent claims. Across them, the inventive features center on a transparent thin-film drape for maintaining negative pressure, a pressure-sensitive acrylic-based adhesive arrangement with margins, a frame-shaped silicone gel backing film with a silicone gel sealing gasket pattern around an absorbent island, and placement/connection features including kiss-cut casting sheet openings and vacuum communication behavior.
Transparent vacuumable thin-film drape maintaining negative pressure
A drape that is a thin film capable of maintaining a negative pressure underneath the drape upon application of a vacuum; wherein the drape is a transparent film and the silicone gel backing film is visible through the transparent film.
Pressure-sensitive acrylic-based adhesive with adhesive margins
A pressure-sensitive acrylic-based adhesive on a skin-facing surface of the drape; an island of absorbent material smaller than the drape applied onto the skin-facing surface so as to leave a first margin of adhesive-coated drape around the island, and a silicone gel backing film affixed to the drape so as to leave a second margin of adhesive-coated drape around the silicone gel backing film.
Frame-shaped silicone gel backing film and matching silicone gel sealing gasket
A silicone gel backing film having frame shape and a smaller footprint than the drape and a larger footprint than the island of absorbent material, affixed to the drape to leave the second margin, and a silicone gel on the silicone gel backing film at least substantially matching the frame shape of the silicone gel backing film surrounding the island of absorbent material while leaving the second margin around the silicone gel.
Fluid communication between vacuum source and drape via a hole
Where the dressing is used in combination with a vacuum source that is fluidly connected to a hole extending through the drape.
Kiss-cut casting sheet opening for placement visibility
A casting sheet on which the drape was cast, kiss cut to define a casting sheet opening through which the island of absorbent material is visible during placement of the dressing, wherein the silicone gel is visible through the casting sheet opening during placement.
Removable casting sheet after skin contact
A refinement wherein the casting sheet is removable after the drape has been brought into contact with the skin.
Across the independent claims, the coverage focuses on a negative-pressure wound dressing using a transparent vacuumable thin-film drape with a pressure-sensitive acrylic-based adhesive, an absorbent island smaller than the drape leaving adhesive margins, and a frame-shaped silicone gel backing film with silicone gel matching that frame shape around the absorbent island. The claim set further emphasizes placement/visibility via kiss-cut casting sheet openings and includes a vacuum connection through a hole in the drape.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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