Patents by Inventor David M. Gravett

David M. Gravett 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).

  • Publication number: 20240033283
    Abstract: Disclosed herein are compositions and methods of making and using such compositions. Polyhydric polymers may be converted to derivatives thereof by reaction with divinyl sulfone to provide vinyl sulfone substituted polymers, where the polymers may additionally be crosslinked, and the crosslinked and non-crosslinked derivatives may be used in biomedical and other applications.
    Type: Application
    Filed: December 2, 2021
    Publication date: February 1, 2024
    Inventors: David M. GRAVETT, Kara Bethany ACAMPORA, Prabhjot SAINI
  • Patent number: 9980977
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 29, 2018
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20170239358
    Abstract: The present application provides rapid-gelling, sprayable hyaluronic-acid based compositions, kits, related methods, precursor formulations, and uses thereof.
    Type: Application
    Filed: September 27, 2016
    Publication date: August 24, 2017
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20170224708
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Application
    Filed: September 13, 2016
    Publication date: August 10, 2017
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Patent number: 9492383
    Abstract: The present application provides rapid-gelling, sprayable hyaluronic-acid based compositions, kits, related methods, precursor formulations, and uses thereof.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: November 15, 2016
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Patent number: 9446136
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: September 20, 2016
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20160193342
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Application
    Filed: October 30, 2015
    Publication date: July 7, 2016
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Patent number: 9353218
    Abstract: Multifunctional compounds are provided that readily crosslink in situ to provide crosslinked biomaterials. The multifunctional compounds contain a single component having at least three reactive functional groups thereon, with the functional groups selected so as to be non-reactive in an initial environment and inter-reactive in a modified environment. Reaction of a plurality of the multifunctional compounds results in a three-dimensional crosslinked matrix. In one embodiment, a first functional group is nucleophilic, a second functional group is electrophilic, and at least one additional functional group is nucleophilic or electrophilic. Methods for preparing and using the multifunctional compounds, and kits including the multifunctional compounds are also provided. Exemplary uses for the multifunctional compounds include tissue augmentation, biologically active agent delivery, bioadhesion, and prevention of adhesions following surgery or injury.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: May 31, 2016
    Inventors: George Y. Daniloff, Michael Huy Ngo, Olof Mikael Trollsas, David M. Gravett, Philip M. Toleikis
  • Patent number: 9326934
    Abstract: Compositions are disclosed that afford drug delivery from two-part polymer compositions that rapidly form covalent linkages when mixed together. Such compositions are particularly well suited for use in a variety of tissue related applications when rapid adhesion to the tissue and gel formation is desired along with drug delivery. For example, the compositions are useful as tissue sealants, in promoting hemostasis, in effecting tissue adhesion, in providing tissue augmentation, and in the prevention of surgical adhesions.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: May 3, 2016
    Inventors: David M. Gravett, Aniko Takacs-Cox, Philip M. Toleikis, Arpita Maiti, Leanne Embree
  • Publication number: 20150352142
    Abstract: Provided herein are hyaluronic-acid based compositions comprising a hyaluronic acid-based polymer and a corticosteroid in the presence of a stabilizing amount of one or more stabilizing additives and related methods. The resulting compositions substantially retain their viscoelastic and related rheolotical properties under conditions of storage, processing, and use.
    Type: Application
    Filed: January 10, 2014
    Publication date: December 10, 2015
    Inventors: David M. Gravett, Pingren He
  • Patent number: 9192678
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: November 24, 2015
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Patent number: 9011894
    Abstract: The present application provides sterile hyaluronic polymer compositions than are useful, e.g., as medical devices, biomedical adhesives, and sealants. Generally, provided are sterile dry compositions comprising a thiol-derivatized hyaluronic acid and one or more stabilizing excipients. Also provided are related kits and methods. The compositions described herein are particularly robust to sterilizing irradiation, and substantially maintain both their molecular weight and gelation parameters such as gelation time after sterilization, such that such sterile compositions are capable of hydrogel formation.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: April 21, 2015
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: George Y. Daniloff, Robert C. Spiro, David M. Gravett, Patrick J. Hillas, Pingren He
  • Publication number: 20140328891
    Abstract: Medical implants are provided which release a fluoropyrimidine or an analog thereof, thereby inhibiting or reducing the incidence of infection associated with the implant.
    Type: Application
    Filed: July 17, 2014
    Publication date: November 6, 2014
    Inventors: William L. Hunter, David M. Gravett, Philip M. Toleikis, Richard T. Liggins, Troy A.E. Loss
  • Publication number: 20140328926
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Application
    Filed: July 16, 2014
    Publication date: November 6, 2014
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20140221307
    Abstract: The present application provides rapid-gelling, sprayable hyaluronic-acid based compositions, kits, related methods, precursor formulations, and uses thereof.
    Type: Application
    Filed: April 18, 2012
    Publication date: August 7, 2014
    Inventors: David M Gravett, George Y. Daniloff, Pingren He
  • Patent number: 8790702
    Abstract: The present application provides compositions comprising hyaluronic acid having low levels of functional group modification, mixtures formed by controlled reaction of such lightly modified hyaluronic acid with suitable difunctional or multi-functional crosslinkers, and hydrogel precursor compositions and the resulting hydrogels. The compositions are lightly cross-linked and possess low pro-inflammatory properties when injected in vivo, and can be used as, for example, medical devices, biomedical adhesives and sealants, and for localized delivery of bioactive agents, among other uses.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: July 29, 2014
    Assignee: Carbylan Therapeutics, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20130289235
    Abstract: Multifunctional compounds are provided that readily crosslink in situ to provide crosslinked biomaterials. The multifunctional compounds contain a single component having at least three reactive functional groups thereon, with the functional groups selected so as to be non-reactive in an initial environment and inter-reactive in a modified environment. Reaction of a plurality of the multifunctional compounds results in a three-dimensional crosslinked matrix. In one embodiment, a first functional group is nucleophilic, a second functional group is electrophilic, and at least one additional functional group is nucleophilic or electrophilic. Methods for preparing and using the multifunctional compounds, and kits including the multifunctional compounds are also provided. Exemplary uses for the multifunctional compounds include tissue augmentation, biologically active agent delivery, bioadhesion, and prevention of adhesions following surgery or injury.
    Type: Application
    Filed: June 14, 2013
    Publication date: October 31, 2013
    Inventors: George Y. Daniloff, Michael Huy Ngo, Olof Mikael Trollsas, David M. Gravett, Philip M. Toleikis
  • Patent number: 8486437
    Abstract: Multifunctional compounds are provided that readily crosslink in situ to provide crosslinked biomaterials. The multifunctional compounds contain a single component having at least three reactive functional groups thereon, with the functional groups selected so as to be non-reactive in an initial environment and inter-reactive in a modified environment. Reaction of a plurality of the multifunctional compounds results in a three-dimensional crosslinked matrix. In one embodiment, a first functional group is nucleophilic, a second functional group is electrophilic, and at least one additional functional group is nucleophilic or electrophilic. Methods for preparing and using the multifunctional compounds, and kits including the multifunctional compounds are also provided. Exemplary uses for the multifunctional compounds include tissue augmentation, biologically active agent delivery, bioadhesion, and prevention of adhesions following surgery or injury.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 16, 2013
    Assignee: Angiotech Pharmaceuticals (US), Inc.
    Inventors: George Y. Daniloff, Michael Huy Ngo, Olof Mikael Trollsas, David M. Gravett, Philip M. Toleikis
  • Patent number: 8481073
    Abstract: Methods of preventing adhesion between issues are provided that utilizes in situ crosslinked biomaterials. The biomaterial contains at least the crosslinked product of two biocompatible, non-immunogenic components having reactive groups thereon, with the functional groups selected so as to enable inter-reaction between the components, i.e., crosslinking. Exemplary uses for the crosslinked compositions include preventing adhesions following surgery or injury, and preventing scar tissue formation.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: July 9, 2013
    Assignee: AngioDevice International GmbH
    Inventors: George Y. Daniloff, Louis C. Sehl, Olof Mikael Trollsas, Jacqueline A. Schroeder, David M. Gravett, Philip M. Toleikis
  • Patent number: 8460708
    Abstract: Kits comprising dry power compositions are provided that readily crosslink in situ to provide crosslinked biomaterials. The dry powder composition contains at least two biocompatible, non-immunogenic components having reactive groups thereon, with the functional groups selected so as to enable inter-reaction between the components, i.e., crosslinking. Exemplary uses for the crosslinked biomaterials include tissue augmentation, biologically active agent delivery, bioadhesion, and prevention of adhesions following surgery or injury.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: June 11, 2013
    Assignee: AngioDevice International GmbH
    Inventors: George Y. Daniloff, Louis C. Sehl, Olof Mikael Trollsas, Jacqueline A. Schroeder, David M. Gravett, Philip M. Toleikis