Hemorrhage management system

US10265433B2 · kind B2 · utility

Assignees

• Lawrence Livermore National Security, LLC · US
• THE TEXAS A&M UNIVERSITY SYSTEM · US

Inventors

• Duncan J. Maitland · College Station, US
• Todd L. Landsman · San Jose, US
• Tyler Joseph Touchet · Cypress, US
• Elizabeth L. Cosgriff-Hernandez · College Station, US
• Thomas S. Wilson · San Leandro, US

Key dates

• Filing date: Mar 18, 2015
• Grant date: Apr 23, 2019
• Expiry date: May 14, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L2400/16
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An embodiment includes a wound dressing comprising: a shape memory polymer (SMP) foam, including open cells, having first and second states; and a hydrogel (HG) included within the cells; wherein (a) in a first position a composite, including the SMP foam and the HG, is configured to be located proximate a hemorrhagic tissue with the SMP foam in the first state; (b) in a second position the composite is configured to be expanded to the second state against the hemorrhagic tissue when the SMP foam is plasticized at 37° C. depressing a glass transition temperature (Tg) of the SMP foam to below 25° C. Other embodiments are described herein.