Abstract: Naphthalimide compounds are used in tissue bonding and protein cross-linking applications. When activated by an activating agent, such as light in the 400-500 nm absorption range, the naphthalimide compounds form chemically-reactive species that cross-link proteins, bond connective tissues together, and bond tissues and other biomaterials together. A naphthalimide-labeled biomolecule, such as a naphthalimide-labeled chitosan, is also capable of bonding tissues without subsequent direct illumination of the contacted tissue area. The naphthalimide compounds may be used in tissue or arterial repair, stabilization of an expanded arterial wall after angioplasty, tethering pharmaceutical agents to tissue surfaces to provide local drug delivery, and for chemically bonding skin care products, sunscreens, and cosmetics to the skin.
Type:
Application
Filed:
March 19, 2009
Publication date:
July 16, 2009
Applicant:
PhotoBioMed Corporation
Inventors:
Ronald E. Utech, Kaia L. Kloster, Millard M. Judy, Kevin J. Vaska, James L. Matthews
Abstract: Naphthalimide compounds are used in tissue bonding and protein cross-linking applications. When activated by an activating agent, such as light in the 400-500 nm absorption range, the naphthalimide compounds form chemically-reactive species that cross-link proteins, bond connective tissues together, and bond tissues and other biomaterials together. A naphthalimide-labeled biomolecule, such as a naphthalimide-labeled chitosan, is also capable of bonding tissues without subsequent direct illumination of the contacted tissue area. The naphthalimide compounds may be used in tissue or arterial repair, stabilization of an expanded arterial wall after angioplasty, tethering pharmaceutical agents to tissue surfaces to provide local drug delivery, and for chemically bonding skin care products, sunscreens, and cosmetics to the skin.
Type:
Grant
Filed:
November 5, 2004
Date of Patent:
April 7, 2009
Assignee:
PhotoBioMed Corporation
Inventors:
Ronald E. Utecht, Kaia L. Kloster, Millard M. Judy, Kevin J. Vaska, James L. Matthews
Abstract: Novel biomaterials are disclosed having unique properties that make it a useful material in adhesives, local drug delivery applications and as filler or bulking material. The biomaterials are strong, safe and easily used as a surgical adhesive. Treated chitosan, modified chitosan or modified and treated chitosan compositions are disclosed displaying strengths suitable for general surgical applications. The materials can be used as a drug delivery vehicle which allows for the localization of the delivered drug as well as a programmable tether which allows for the release of the drug on a timed basis or in response to a physiological state such as the release of proteolytic enzymes. The materials of this invention can also be modified and treated to optimize the retention of water, thereby serving as a useful filler or bulking material.
Type:
Application
Filed:
January 31, 2008
Publication date:
August 21, 2008
Applicant:
PHOTOBIOMED CORPORATION
Inventors:
Ronald E. Utecht, Kaia L. Kloster, Therese M. Downey, Barbara R. Haberer
Abstract: Naphthalimide compounds are used in tissue bonding and protein cross-linking applications. When activated by an activating agent, such as light in the 400-500 nm absorption range, the naphthalimide compounds form chemically-reactive species that cross-link proteins, bond connective tissues together, and bond tissues and other biomaterials together. A naphthalimide-labeled biomolecule, such as a naphthalimide-labeled chitosan, is also capable of bonding tissues without subsequent direct illumination of the contacted tissue area. The naphthalimide compounds may be used in tissue or arterial repair, stabilization of an expanded arterial wall after angioplasty, tethering pharmaceutical agents to tissue surfaces to provide local drug delivery, and for chemically bonding skin care products, sunscreens, and cosmetics to the skin.
Type:
Application
Filed:
November 5, 2004
Publication date:
May 26, 2005
Applicant:
PhotoBioMed Corporation
Inventors:
Ronald Utecht, Kaia Kloster, Millard Judy, Kevin Vaska, James Matthews