Patents by Inventor Nancy Schaffhausen

Nancy Schaffhausen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Protective gel based on chitosan and oxidized polysaccharide
    Patent number: 9433636
    Abstract: Bodily tissue and structures may be protected using a fluid layer containing a mixture of chitosan and oxidized polysaccharide. The mixture forms a protective gel layer via in situ crosslinking. Compared to crosslinking using a low molecular weight aldehyde such as glutaraldehyde or genipin, oxidized polysaccharides appear to provide faster gelation while avoiding the use of potentially less bioacceptable low molecular weight aldehydes.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: September 6, 2016
    Assignee: Medtronic, Inc.
    Inventors: Edze Jan Tijsma, Maria Nieves Gonzalez, Erica M. TenBroek, Nancy Schaffhausen
  • Method for treating the ear, nose, sinus or throat
    Patent number: 9333220
    Abstract: Bodily tissue and structures may be protected using a fluid layer containing a mixture of chitosan and oxidized polysaccharide. The mixture forms a protective gel layer via in situ crosslinking. Compared to crosslinking using a low molecular weight aldehyde such as glutaraldehyde or genipin, oxidized polysaccharides appear to provide faster gelation while avoiding the use of potentially less bioacceptable low molecular weight aldehydes.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: May 10, 2016
    Assignee: Medtronic, Inc.
    Inventors: Edze Jan Tijsma, Maria Nieves Gonzalez, Erica M. TenBroek, Nancy Schaffhausen
  • METHOD FOR TREATING THE EAR, NOSE OR THROAT
    Publication number: 20140073601
    Abstract: Bodily tissue and structures may be protected using a fluid layer containing a mixture of chitosan and oxidized polysaccharide. The mixture forms a protective gel layer via in situ crosslinking. Compared to crosslinking using a low molecular weight aldehyde such as glutaraldehyde or genipin, oxidized polysaccharides appear to provide faster gelation while avoiding the use of potentially less bioacceptable low molecular weight aldehydes.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 13, 2014
    Applicant: Medtronic, Inc.
    Inventors: Edze Jan Tijsma, Maria Nieves Gonzalez, Erica M. TenBroek, Nancy Schaffhausen
  • THIOLATED CHITOSAN GEL
    Publication number: 20090269417
    Abstract: Bodily tissue and structures may be coated with a protective gel layer made from a two-part composition whose first part contains thiolated chitosan and whose second part contains sufficient oxidizing agent or external crosslinking agent so that when the two parts are mixed and coated onto the tissue or structure the mixture will form a protective gel layer in less than 30 minutes.
    Type: Application
    Filed: April 23, 2009
    Publication date: October 29, 2009
    Inventors: Maria Nieves Gonzalez, Edze Jan Tijsma, Nancy Schaffhausen
  • PROTECTIVE GEL BASED ON CHITOSAN AND OXIDIZED POLYSACCHARIDE
    Publication number: 20090270346
    Abstract: Bodily tissue and structures may be protected using a fluid layer containing a mixture of chitosan and oxidized polysaccharide. The mixture forms a protective gel layer via in situ crosslinking. Compared to crosslinking using a low molecular weight aldehyde such as glutaraldehyde or genipin, oxidized polysaccharides appear to provide faster gelation while avoiding the use of potentially less bioacceptable low molecular weight aldehydes.
    Type: Application
    Filed: April 23, 2009
    Publication date: October 29, 2009
    Inventors: Edze Jan Tijsma, Maria Nieves Gonzales, Erica M. TenBroek, Nancy Schaffhausen