Mechanical vacuum dressing for mechanically managing, protecting and suctioning small incisional wounds

US11491265B2 · kind B2 · utility

Assignee

• Cornell University · IT

Inventors

• Sang Moon Lee · Seoul, KR
• Anthony Assal · Elmont, US
• Matthew Baird · Tarrytown, US
• John Frederick Cornhill · New York, US
• Russell Corwin · Ossining, US
• Andrew W. Harvey · South Lyon, US
• Jeffrey Milsom · New York, US
• Anh Nguyen · Woburn, US
• Jia Xing · 安丰镇, CN
• James H. Goldie · Lexington, US
• Vladimir Gilman · Pepperell, US
• Minh Duong · Pepperell, US
• Jennifer Louise Vondran · Hopewell, US
• Blair Hough · Pepperell, US
• Gerard Libby · Wakefield, US
• Timothy Norman Johnson · Freeport, US
• Darwin Keith-Lucas · Arlington, US

Key dates

• Filing date: Feb 22, 2018
• Grant date: Nov 8, 2022
• Expiry date: Feb 22, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/075
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A mechanical vacuum dressing comprising: a first valve layer comprising a first one-way valve; a second valve layer comprising a second one-way valve; the first valve layer being joined to the second valve layer so as to define a chamber therebetween; the first one-way valve being configured to admit fluid into the chamber through the first one-way valve but prevent fluid from exiting the chamber through the first one-way valve; the second one-way valve being configured to exhaust fluid from the chamber through the second one-way valve but prevent fluid from entering the chamber through the second one-way valve; and the second valve layer comprising an elastomeric material such that (i) when the second valve layer is moved away from the first valve layer, the volume of the chamber is increased, and (ii) when the second valve layer is thereafter released, the second valve layer moves back towards the first valve layer and the volume of the chamber is decreased.