Patents by Inventor Richard Liggins

Richard Liggins 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: 20050148512
    Abstract: Implants are used in combination with a fibrosis-inducing agent in order to induce fibrosis that may otherwise not occur when the implant is placed within an animal or increase fibrosis between the implant and the host tissue.
    Type: Application
    Filed: November 10, 2004
    Publication date: July 7, 2005
    Applicant: Angiotech International AG
    Inventors: William Hunter, David Gravett, Philip Toleikis, Arpita Maiti, Pierre Signore, Richard Liggins
  • Publication number: 20050149173
    Abstract: Intravascular devices (e.g., stents, stent grafts, covered stents, aneurysm coils, embolic agents and drug delivery catheters and balloons) are used in combination with fibrosing agents in order to induce fibrosis that may otherwise not occur when the implant is placed within an animal or to promote fibrosis betweent the devices and the host tissues. Compositions and methods are described for use in the treatment of aneurysms and unstable arterial (vulnerable) plaque.
    Type: Application
    Filed: November 10, 2004
    Publication date: July 7, 2005
    Applicant: Angiotech International AG
    Inventors: William Hunter, David Gravett, Philip Toleikis, Arpita Maiti, Pierre Signore, Richard Liggins, Dechi Guan
  • Publication number: 20050149175
    Abstract: Intravascular devices (e.g., stents, stent grafts, covered stents, aneurysm coils, embolic agents and drug delivery catheters and balloons) are used in combination with fibrosing agents in order to induce fibrosis that may otherwise not occur when the implant is placed within an animal or to promote fibrosis betweent the devices and the host tissues. Compositions and methods are described for use in the treatment of aneurysms and unstable arterial (vulnerable) plaque.
    Type: Application
    Filed: December 7, 2004
    Publication date: July 7, 2005
    Applicant: Angiotech International AG
    Inventors: William Hunter, David Gravett, Philip Toleikis, Arpita Maiti, Pierre Signore, Richard Liggins, Dechi Guan
  • Publication number: 20050149158
    Abstract: 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. The agent may be any suitable anti-scarring agent, e.g., a cell cycle inhibitor, and may be used in conjunction with a second pharmaceutical agent, e.g., an antibiotic. Suitable implants include intravascular implants, a vascular graft or wrap implant, an implant for hemodialysis access, an implant that provides an anastomotic connection, ventricular assist implant, a prosthetic heart valve implant, an inferior vena cava filter implant, a peritoneal dialysis catheter implant, a central nervous system shunt, an intraocular lens, an implant for glaucoma drainage, a penile implant, an endotracheal tube, a tracheostomy tube, a gastrointestinal device, and a spinal implant.
    Type: Application
    Filed: November 29, 2004
    Publication date: July 7, 2005
    Applicant: Angiotech International AG
    Inventors: William Hunter, David Gravett, Philip Toleikis, Arpita Maiti, Pierre Signore, Richard Liggins
  • Publication number: 20050143817
    Abstract: 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. The agent may be any suitable anti-scarring agent, e.g., a cell cycle inhibitor, and may be used in conjunction with a second pharmaceutical agent, e.g., an antibiotic. Suitable implants include intravascular implants, a vascular graft or wrap implant, an implant for hemodialysis access, an implant that provides an anastomotic connection, ventricular assist implant, a prosthetic heart valve implant, an inferior vena cava filter implant, a peritoneal dialysis catheter implant, a central nervous system shunt, an intraocular lens, an implant for glaucoma drainage, a penile implant, an endotracheal tube, a tracheostomy tube, a gastrointestinal device, and a spinal implant.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 30, 2005
    Applicant: Angiotech International AG
    Inventors: William Hunter, David Gravett, Philip Toleikis, Arpita Maiti, Pierre Signore, Richard Liggins
  • Publication number: 20050142163
    Abstract: Implants are used in combination with a fibrosis-inducing agent in order to induce fibrosis that may otherwise not occur when the implant is placed within an animal or increase fibrosis between the implant and the host tissue.
    Type: Application
    Filed: December 1, 2004
    Publication date: June 30, 2005
    Applicant: Angiotech International AG
    Inventors: William Hunter, David Gravett, Philip Toleikis, Arpita Maiti, Pierre Signore, Richard Liggins
  • Publication number: 20030157170
    Abstract: Anhydrous 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 a polymer and an organic solvent, where the solvent is water-miscible and biocompatible, and the polymer is hydrophobic or hydrophilic and comprises residues of monomers x and/or y, the polymer optionally having a molecular weight that is less than the molecular weight of the diblock copolymer; and a drug. Upon admixture with water, the anhydrous formulations form drug delivery vehicles, preferably in micellar form. The inclusion of polymer and/or organic solvent 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, e.g., advantageous viscosity and/or melting point.
    Type: Application
    Filed: September 19, 2002
    Publication date: August 21, 2003
    Inventors: Richard Liggins, Larry Murphy, Dechi Guan
  • Publication number: 20030054036
    Abstract: Anhydrous 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 a polymer and an organic solvent, where the solvent is water-miscible and biocompatible, and the polymer is hydrophobic or hydrophilic and comprises residues of monomers x and/or y, the polymer optionally having a molecular weight that is less than the molecular weight of the diblock copolymer; and a drug. Upon admixture with water, the anhydrous formulations form drug delivery vehicles, preferably in micellar form. The inclusion of polymer and/or organic solvent 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, e.g., advantageous viscosity and/or melting point.
    Type: Application
    Filed: March 13, 2002
    Publication date: March 20, 2003
    Inventors: Richard Liggins, Larry Murphy, Dechi Guan