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:
Apr. 11, 2023
Filed:
Mar. 28, 2018
Luna Innovations Incorporated, Roanoke, VA (US);
Lauren Anne Costella, Roanoke, VA (US);
Michael J. Danilich, Roanoke, VA (US);
Christopher K. Tison, Roanoke, VA (US);
Patrick Cottler, Roanoke, VA (US);
LUNA LABS USA, LLC, Charlottesville, VA (US);
Abstract
Biologically acceptable surgical barrier materials are comprised of a polyelectrolytic complex of chitosan and sodium alginate. The chitosan is deacetylated in an amount between about 40 to about 60% and has a molecular weight (Mw) between 50,000 and 375,000 g/mol. The barrier materials may be formed by mixing a two-component material system whereby one component comprises the chitosan and a second component comprises the sodium alginate and directing such a mixture (e.g., via air-assisted spray nozzle) toward a surgical site in need of the material. A polyelectrolytic complex of the chitosan and sodium alginate will thereby form in situ. Suitable ionic cross-linkers may be provided in the individual components, e.g., calcium chloride with the chitosan component and sodium tripolyphosphate with the sodium alginate component.