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).

  • Patent number: 8425927
    Abstract: Medical implants are provided which release an anthracycline, fluoropyrimidine, folic acid antagonist, podophylotoxin, camptothecin, hydroxyurea, and/or platinum complex, thereby inhibiting or reducing the incidence of infection associated with the implant.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: April 23, 2013
    Assignee: Angiotech International AG
    Inventors: William L. Hunter, David M. Gravett, Philip M. Toleikis, Richard T. Liggins, Troy A. E. Loss
  • Patent number: 8372420
    Abstract: Medical implants are provided which release an anthracycline, fluoropyrimidine, folic acid antagonist, podophylotoxin, camptothecin, hydroxyurea, and/or platinum complex, thereby inhibiting or reducing the incidence of infection associated with the implant.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: February 12, 2013
    Assignee: Angiotech International AG
    Inventors: William L. Hunter, David M. Gravett, Philip M. Toleikis, Richard T. Liggins, Troy A. E. Loss
  • Publication number: 20130012683
    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: September 14, 2012
    Publication date: January 10, 2013
    Applicant: ANGIOTECH PHARMACEUTICALS (US), INC.
    Inventors: George Y. Daniloff, Michael Huy Ngo, Olof Mikael Trollsas, David M. Gravett, Philip M. Toleikis
  • Patent number: 8313760
    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: Grant
    Filed: April 22, 2008
    Date of Patent: November 20, 2012
    Assignee: Angiotech International AG
    Inventors: William L Hunter, David M Gravett, Philip M Toleikis, Richard T Liggins, Troy A. E. Loss
  • Patent number: 8303973
    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 19, 2005
    Date of Patent: November 6, 2012
    Assignee: Angiotech Pharmaceuticals (US), Inc.
    Inventors: George Y. Daniloff, Michael Huy Ngo, Olof Mikael Trollsas, David M. Gravett, Philip M. Toleikis
  • Publication number: 20120252905
    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: Application
    Filed: May 1, 2012
    Publication date: October 4, 2012
    Inventors: David M. Gravett, Aniko Takacs-Cox, Philip M. Toleikis, Arpita Maiti, Leanne Embree
  • Publication number: 20120128741
    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 23, 2010
    Publication date: May 24, 2012
    Applicant: Carbylan Biosurgery, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20120041481
    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: Application
    Filed: October 24, 2011
    Publication date: February 16, 2012
    Applicant: AngioDevice International GmbH
    Inventors: George Y. Daniloff, Louis C. Sehl, Olof Mikael Trollsas, Jacqueline Schroeder, David M. Gravett, Philip M. Toleikis
  • Publication number: 20120039980
    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: Application
    Filed: October 24, 2011
    Publication date: February 16, 2012
    Inventors: George Y. Daniloff, Louis C. Sehl, Olof Mikael Trollsas, Jacqueline Schroeder, David M. Gravett, Philip M. Toleikis
  • Patent number: 8067031
    Abstract: Crosslinkable compositions are provided that readily crosslink in situ to provide crosslinked biomaterials. The 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. In one embodiment, a first component has nucleophilic groups and a second component has electrophilic groups. Additional components may have nucleophilic or electrophilic groups. Methods for preparing and using the compositions are also provided as are kits for delivery of the compositions. Exemplary uses for the crosslinked compositions include tissue augmentation, biologically active agent delivery, bioadhesion, and prevention of adhesions following surgery or injury.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: November 29, 2011
    Assignee: AngioDevice International GmbH
    Inventors: George Y. Daniloff, Louis C. Sehl, Olof Mikael Trollsas, Jacqueline Schroeder, David M. Gravett, Philip M. Toleikis
  • Publication number: 20110129513
    Abstract: Medical implants are provided which release an anthracycline, fluoropyrimidine, folic acid antagonist, podophylotoxin, camptothecin, hydroxyurea, and/or platinum complex, thereby inhibiting or reducing the incidence of infection associated with the implant.
    Type: Application
    Filed: November 4, 2010
    Publication date: June 2, 2011
    Applicant: ANGIOTECH INTERNATIONAL AG
    Inventors: William L. Hunter, David M. Gravett, Philip M. Toleikis, Richard T. Liggins, Troy A. E. Loss
  • Patent number: 7829118
    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: November 9, 2010
    Assignee: Carbylan Biosurgery, Inc.
    Inventors: David M. Gravett, George Y. Daniloff, Pingren He
  • Publication number: 20100268288
    Abstract: Electrical devices (e.g., cardiac rhythm management and neurostimulation devices) for contact with tissue are used in combination with an anti-scarring agent (e.g., a cell cycle inhibitor) in order to inhibit scarring that may otherwise occur when the devices are implanted within an animal.
    Type: Application
    Filed: February 10, 2010
    Publication date: October 21, 2010
    Applicant: Angiotech International AG
    Inventors: William L. Hunter, David M. Gravett, Philip M. Toleikis, Arpita Maiti
  • Publication number: 20100222863
    Abstract: Silk-containing stent grafts are provided comprising an endoluminal stent and a graft, wherein the silk induces the in vivo adhesion of the stent graft to vessel walls, or, otherwise induces or accelerates an in vivo fibrotic reaction causing said stent graft to adhere to vessel wall. Also provided are methods for making and using such stent grafts.
    Type: Application
    Filed: March 31, 2010
    Publication date: September 2, 2010
    Applicant: Angiotech International AG
    Inventors: David M. Gravett, Pierre E. Signore, Kaiyue Wang, Philip M. Toleikis, Dechi Guan, Zengxuan Hu, Arpita Maiti
  • Publication number: 20100092536
    Abstract: Pumps and sensors for contact with tissue are used in combination with an anti-scarring agent (e.g., a cell cycle inhibitor) in order to inhibit scarring that may otherwise occur when the pumps and sensors are implanted within an animal.
    Type: Application
    Filed: May 11, 2009
    Publication date: April 15, 2010
    Applicant: Angiotech International AG
    Inventors: William L. Hunter, David M. Gravett, Philip M. Toleikis, Arpita Maiti
  • Publication number: 20100082003
    Abstract: Medical implants are provided which release an anthracycline, fluoropyrimidine, folic acid antagonist, podophylotoxin, camptothecin, hydroxyurea, and/or platinum complex, thereby inhibiting or reducing the incidence of infection associated with the implant.
    Type: Application
    Filed: September 3, 2009
    Publication date: April 1, 2010
    Applicant: Angiotech International AG
    Inventors: William L. Hunter, David M. Gravett, Philip M. Toleikis, Richard T. Liggins, Troy A.E. Loss
  • Publication number: 20090280153
    Abstract: Electrical devices (e.g., cardiac rhythm management and neurostimulation devices) for contact with tissue are used in combination with an anti-scarring agent in order to inhibit scarring that may otherwise occur when the devices are implanted within an animal.
    Type: Application
    Filed: March 31, 2006
    Publication date: November 12, 2009
    Applicant: Angiotech International AG
    Inventors: William L. Hunter, Philip M. Toleikis, David M. Gravett, Arpita Maiti, Richard T. Liggins, Aniko Takacs-Cox, Rui Avelar, Pierre E. Signore, Troy A. E. Loss, Anne Hutchinson, Gaye McDonald-Jones, Fara Lakhani
  • Publication number: 20090226500
    Abstract: Sutures are used in combination with anti-scarring agents to inhibit fibrosis between the sutures and the host tissues into which the sutures are inserted. Compositions and methods are described for use in reducing excessive scarring, surgical adhesion, and other disorders.
    Type: Application
    Filed: January 31, 2007
    Publication date: September 10, 2009
    Applicant: Angiotech Pharmaceuticals, Inc
    Inventors: Rui Avelar, Arpita Maiti, Philip M. Toleikis, Johanne Diane Cashman, David M. Gravett
  • Publication number: 20090220604
    Abstract: Formulations are formed of a diblock copolymer (X—Y) having a hydrophilic block X comprising residues of monomer x, and a hydrophobic block Y comprising residues of monomer y; an additive selected from an amino acid and an oligopeptide. Upon admixture with water, the formulations form drug delivery vehicles, preferably in micellar form. The inclusion of amino acid and/or oligopeptide provides for the formation of micelles at an enhanced rate, and/or provides the formation of micelles having an enhanced ability to incorporate drug(s), and/or provides the formation of micelles having advantageous physical characteristics.
    Type: Application
    Filed: September 25, 2008
    Publication date: September 3, 2009
    Applicant: ANGIOTECH INTERNATIONAL AG
    Inventor: David M. Gravett
  • Publication number: 20090214652
    Abstract: Soft tissue implants (e.g., breast, pectoral, chin, facial, lip, and nasal implants) are used in combination with an anti-scarring agent in order to inhibit scarring that may otherwise occur when the implant is placed within an animal.
    Type: Application
    Filed: April 16, 2009
    Publication date: August 27, 2009
    Applicant: Angiotech International AG
    Inventors: William L. Hunter, David M. Gravett, Philip M. Toleikis, Arpita Maiti