Hemorrhage management system

Maitland, Duncan J.; Landsman, Todd Lawrence; Touchet, Tyler Joseph; Cosgriff-Hernandez, Elizabeth L.; Wilson, Thomas S.

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
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A42 - headwear
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Title: Hemorrhage management system

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.

Inventors:: Maitland, Duncan J.; Landsman, Todd Lawrence; Touchet, Tyler Joseph; Cosgriff-Hernandez, Elizabeth L.; Wilson, Thomas S.

Issue Date:: 2021-06-01

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1824006

Patent Number(s):: 11020507

Application Number:: 16/353,793

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA); THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM (College Station, TX)

Patent Classifications (CPCs):: A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61F - FILTERS IMPLANTABLE INTO BLOOD VESSELS

A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61L - METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL

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A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61F - FILTERS IMPLANTABLE INTO BLOOD VESSELS
A61F13/00017 - {synthetic, e.g. polymer based}

A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61L - METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL
A61L15/18 - containing inorganic materials
A61L15/26 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
A61L15/425 - {Porous materials, e.g. foams or sponges}
A61L15/46 - Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
A61L2300/106 - Halogens or compounds thereof, e.g. iodine, chlorite
A61L2300/404 - Biocides, antimicrobial agents, antiseptic agents
A61L24/0015 - {Medicaments
A61L24/0036 - {Porous materials, e.g. foams or sponges}
A61L24/0094 - {containing macromolecular fillers}
A61L2400/16 - Materials with shape-memory or superelastic properties

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
C08L75/04 - Polyurethanes

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DOE Contract Number:: AC52-07NA27344

Resource Type:: Patent

Resource Relation:: Patent File Date: 03/14/2019

Country of Publication:: United States

Language:: English

Citation Formats


                    Maitland, Duncan J., Landsman, Todd Lawrence, Touchet, Tyler Joseph, Cosgriff-Hernandez, Elizabeth L., and Wilson, Thomas S. Hemorrhage management system.  United States: N. p., 2021. 
        Web.

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                    Maitland, Duncan J., Landsman, Todd Lawrence, Touchet, Tyler Joseph, Cosgriff-Hernandez, Elizabeth L., & Wilson, Thomas S. Hemorrhage management system.  United States.

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                    Maitland, Duncan J., Landsman, Todd Lawrence, Touchet, Tyler Joseph, Cosgriff-Hernandez, Elizabeth L., and Wilson, Thomas S. Tue .  
        "Hemorrhage management system".  United States.  https://www.osti.gov/servlets/purl/1824006.

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@article{osti_1824006,

  title        = {Hemorrhage management system},

  author       = {Maitland, Duncan J. and Landsman, Todd Lawrence and Touchet, Tyler Joseph and Cosgriff-Hernandez, Elizabeth L. and Wilson, Thomas S.},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2021},

  month        = {6}

}

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Works referenced in this record:

Introducer for Use in Inserting a Medical Device into a Body Vessel and Method for Same
patent-application, March 2010

McQueen, Amy; Valaie, Arman H.
US Patent Application 12/203211; 20100057009
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20100057009

Self-Expanding Wound Dressing
patent-application, May 2014

Steinbaugh, John; Bullard, Mary; Barofsky, Andrew
US Patent Application 14/163962; 20140142523
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140142523

Absorbable tissue dressing assemblies, systems, and methods formed from hydrophilic polymer sponge structures such as chitosan
patent, September 2012

McCarthy, Simon; McGrath, Barbara; Winata, Ervelyn
US Patent Document 8,269,058
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8269058