The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2019
Filed:
May. 22, 2018
Applicant:
Dristi Llc, Cincinnati, OH (US);
Inventor:
Ranjit Chatterjee, Cincinnati, OH (US);
Assignee:
Dristi, LLC, Cincinnati, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F 13/00 (2006.01);
U.S. Cl.
CPC ...
A61F 13/00042 (2013.01); A61F 13/00012 (2013.01); A61F 13/00017 (2013.01); A61F 13/00029 (2013.01); A61F 13/00068 (2013.01); A61F 2013/00323 (2013.01); A61F 2013/00336 (2013.01);
Abstract
Disclosed are hybrid wound dressings that include at least one front layer of a hydrophilic absorbent material and at least one layer behind the front layer that is made of an open-celled polymeric foam made from high internal phase emulsions (HIPEs). The hydrophilic absorbent material may be a natural polymeric material; a synthetic, non-foam polymer; or a material like glass microfiber. Each layer has a rate of fluid absorption and a capillary suction pressure (CSP) for a working fluid like blood plasma. The CSP increases from the front layer toward the layers behind the front layer, such that fluid is drawn away from a wound.