Patents Assigned to Atrix Laboratories
  • Publication number: 20040229912
    Abstract: The present invention is directed to a flowable composition that is suitable for use as a controlled release implant. The flowable composition includes a biodegradable thermoplastic polyester that is at least substantially insoluble in aqueous medium or body fluid. The flowable composition also includes a biocompatible polar aprotic solvent. The biocompatible polar aprotic solvent is miscible to dispersible in aqueous medium or body fluid. The flowable composition also includes leuprolide acetate.
    Type: Application
    Filed: June 21, 2004
    Publication date: November 18, 2004
    Applicant: Atrix Laboratories, Inc.
    Inventors: Richard L. Dunn, John Steven Garrett, Harish Ravivarapu, Bhagya L. Chandrashekar
  • Patent number: 6773714
    Abstract: The present invention is directed to a flowable composition that is suitable for use as a controlled release implant. The flowable composition includes a biodegradable thermoplastic polyester that is at least substantially insoluble in aqueous medium or body fluid. The flowable composition also includes a biocompatible polar aprotic solvent. The biocompatible polar aprotic solvent is miscible to dispersible in aqueous medium or body fluid. The flowable composition also includes leuprolide acetate.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: August 10, 2004
    Assignee: Atrix Laboratories, Inc.
    Inventors: Richard L. Dunn, John Steven Garrett, Harish Ravivarapu, Bhagya L. Chandrashekar
  • Patent number: 6722054
    Abstract: A process for lyophilizing a solution of an active agent in a delivery container is provided. Solution of active agent is deposited into a delivery container, the container is covered with a covering plate and placed inside a lyophilizing apparatus. Lyophilization is conducted to dryness by radiation, convection or both. Also provided is a device made by this process, an active agent-plastic administration device such as a syringe containing an active agent in the form of lyophilized cake, and an array of such administration devices.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: April 20, 2004
    Assignee: Atrix Laboratories, Inc.
    Inventors: Cody L. Yarborough, Dominic Gregory Madril, Rajan Bawa
  • Publication number: 20040009609
    Abstract: A process for lyophilizing a solution of an active agent in a container is provided. Solution of active agent is deposited into a container, the container is covered with a covering plate and placed inside a lyophilizing apparatus. Lyophilization can be conducted to dryness by radiation, convection or both. Also provided is a device made by this process, an active agent-plastic administration device (e.g., a syringe), containing an active agent in the form of lyophilized cake, and an array of such administration devices.
    Type: Application
    Filed: March 17, 2003
    Publication date: January 15, 2004
    Applicant: Atrix Laboratories, Inc.
    Inventors: Cody L. Yarborough, Dominic G. Madril, Rajan Bawa
  • Publication number: 20030195489
    Abstract: The present invention relates generally to medical devices for mixing, preparing and administering therapeutic compositions, and more particularly to a system comprising two syringes and a locking ring wherein two compositions are mixed between the two syringes immediately prior to administration.
    Type: Application
    Filed: June 6, 2003
    Publication date: October 16, 2003
    Applicant: Atrix Laboratories, Inc.
    Inventor: Kenneth S. Peterson
  • Patent number: 6630155
    Abstract: The invention provides a controlled release polymeric composition which includes a base polymer or copolymer, an organic solvent, a polymeric controlled release additive, and a biologically active agent. The polymeric controlled release additive reduces the initial burst of biologically active agent released from the polymeric composition as it is solidifying to form the solid implant. The controlled release additive is preferably a poly(lactide-co-glycolide)/polyethylene glycol block copolymer.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: October 7, 2003
    Assignee: Atrix Laboratories, Inc.
    Inventors: Bhagya L. Chandrashekar, Mingxing Zhou, Eileen M. Jarr, Richard L. Dunn
  • Patent number: 6610252
    Abstract: The present invention provides a system for lyophilization comprising one or more delivery containers, e.g. syringes, and a cover plate, which covers them during lyophilization. The cover plate includes a lid region and one or more protuberances, which project perpendicularly from the lid region and fit delivery containers such that the protuberances are not in complete and continuous contact with sidewalls of the delivery containers. The cover plate permits the escape of vapor from the delivery containers during lyophilization process through an annular gap between each protuberance and a sidewall of each container when the cover plate is resting on the top of the delivery containers. At the same the cover plate prevents the escape of lyophilizate, in particular a pharmaceutical, from the containers during lyophilization.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: August 26, 2003
    Assignee: Atrix Laboratories, Inc.
    Inventors: Dominic G. Madril, Cody L Yarborough, Rajan Bawa, Christopher J. Barrett
  • Publication number: 20030133964
    Abstract: The present invention is directed to a flowable composition that is suitable for use as a controlled release implant. The flowable composition includes a biodegradable thermoplastic polyester that is at least substantially insoluble in aqueous medium or body fluid. The flowable composition also includes a biocompatible polar aprotic solvent. The biocompatible polar aprotic solvent is miscible to dispersible in aqueous medium or body fluid. The flowable composition also includes leuprolide acetate.
    Type: Application
    Filed: February 24, 2003
    Publication date: July 17, 2003
    Applicant: Atrix Laboratories, Inc.
    Inventors: Richard L. Dunn, John Steven Garrett, Harish Ravivarapu, Bhagya L. Chandrashekar
  • Patent number: 6566144
    Abstract: The present invention provides a cover plate that covers one or more delivery containers (e.g., syringe) during lyophilization. The cover plate includes a lid region and one or more protuberances which project perpendicularly from the lid region. The one or more protuberances are adapted to fit in the one or more delivery containers. The cover plate permits the escape of vapor from the one or more delivery containers during the lyophilization process. In addition, the cover plate prevents the escape of lyophilizate from the one or more delivery containers during the lyophilization process. The present invention also provides a system for lyophilizing a solution that contains a pharmaceutical. The system includes one or more delivery containers. The one or more delivery containers contains the solution that contains the pharmaceutical. The system also includes a cover plate used to cover the one or more delivery containers during the lyophilization.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: May 20, 2003
    Assignee: Atrix Laboratories
    Inventors: Dominic G. Madril, Cody L Yarborough, Rajan Bawa, Christopher J. Barrett
  • Patent number: 6565874
    Abstract: The present invention is directed to a flowable composition that is suitable for use as a controlled release implant. The flowable composition includes a biodegradable thermoplastic polyester that is at least substantially insoluble in aqueous medium or body fluid. The flowable composition also includes a biocompatible polar aprotic solvent. The biocompatible polar aprotic solvent is miscible to dispersible in aqueous medium or body fluid. The flowable composition also includes leuprolide acetate.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: May 20, 2003
    Assignee: Atrix Laboratories
    Inventors: Richard L. Dunn, John Steven Garrett, Harish Ravivarapu, Bhagya L Chandrashekar
  • Patent number: 6537565
    Abstract: The invention is directed to a filamentous porous film that can act as a support for cellular attachment, growth and organization. The film is formed from filaments which define a matrix structure with pores.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: March 25, 2003
    Assignee: Atrix Laboratories, Inc.
    Inventors: Deryl D. Swanbom, Richard L. Dunn, Michelle Botz, Kenneth C. Godowski, Scott Jeffers
  • Patent number: 6528080
    Abstract: A flowable composition containing a biocompatible, biodegradable, branched thermoplastic polymer is used to form solid matrices such as implants and controlled-release, drug-compositions in a body. The flowable composition with or without bioactive agent can be administered by syringe and needle to form in situ a solid matrix. Alternatively, the flowable composition can be used to form ex vivo solid biodegradable matrices such as articles, implants and devices. The articles implants and the like can then used as solid fasteners, prosthetic devices, and controlled drug compositions.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: March 4, 2003
    Assignee: Atrix Laboratories, Inc.
    Inventors: Richard L Dunn, James P. English
  • Patent number: 6461631
    Abstract: A flowable composition containing a biocompatible, biodegradable, branched thermoplastic polymer is used to form solid matrices such as implants and controlled-release, drug-compositions in a body. The flowable composition with or without bioactive agent can be administered by syringe and needle to form in situ a solid matrix. Alternatively, the flowable composition can be used to form ex vivo solid biodegradable matrices such as articles, implants and devices. The articles implants and the like can then used as solid fasteners, prosthetic devices, and controlled drug compositions.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: October 8, 2002
    Assignee: Atrix Laboratories, Inc.
    Inventors: Richard L Dunn, James P. English
  • Publication number: 20020114737
    Abstract: The present invention provides a cover plate that covers one or more delivery containers (e.g., syringe) during lyophilization. The cover plate includes a lid region and one or more protuberances which project perpendicularly from the lid region. The one or more protuberances are adapted to fit in the one or more delivery containers. The cover plate permits the escape of vapor from the one or more delivery containers during the lyophilization process. In addition, the cover plate prevents the escape of lyophilizate from the one or more delivery containers during the lyophilization process. The present invention also provides a system for lyophilizing a solution that contains a pharmaceutical. The system includes one or more delivery containers. The one or more delivery containers contains the solution that contains the pharmaceutical. The system also includes a cover plate used to cover the one or more delivery containers during the lyophilization.
    Type: Application
    Filed: January 22, 2002
    Publication date: August 22, 2002
    Applicant: Atrix Laboratories, Inc.
    Inventors: Dominic G. Madril, Cody L. Yarborough, Rajan Bawa, Christopher J. Barrett
  • Publication number: 20020090398
    Abstract: A flowable composition containing a biocompatible, biodegradable, branched thermoplastic polymer is used to form solid matrices such as implants and controlled-release, drug-compositions in a body. The flowable composition with or without bioactive agent can be administered by syringe and needle to form in situ a solid matrix. Alternatively, the flowable composition can be used to form ex vivo solid biodegradable matrices such as articles, implants and devices. The articles implants and the like can then used as solid fasteners, prosthetic devices, and controlled drug compositions.
    Type: Application
    Filed: January 14, 2002
    Publication date: July 11, 2002
    Applicant: Atrix Laboratories, Inc.
    Inventors: Richard L. Dunn, James P. English
  • Patent number: 6395293
    Abstract: The invention is directed to a biodegradable implant precursor having a two-part structure made of an outer sac and a liquid content. The implant precursor is composed of a biodegradable, water-coagulable thermoplastic polymer and a water-miscible organic solvent. When administered to an implant site in an animal, the implant precursor will solidify in situ to a solid, microporous matrix by dissipation of the organic solvent to surrounding tissue fluids and coagulation of the polymer. The invention also includes methods of making the implant precursor, an apparatus for forming the precursor, and a kit containing the apparatus. Also provided are methods of using the implant precursor for treating a tissue defect in an animal, for example, for enhancing cell growth and tissue regeneration, wound and organ repair, nerve regeneration, soft and hard tissue regeneration, and the like, for delivery of biologically-active substances to tissue or organs, and other like therapies.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: May 28, 2002
    Assignee: Atrix Laboratories
    Inventors: Alan M. Polson, Deryl D. Swanbom, Richard L. Dunn, Charles P. Cox, Richard L. Norton, Bryan K. Lowe, Kenneth S. Peterson
  • Patent number: 6355657
    Abstract: Compositions and methods for the topical delivery of loperamide hydrochloride are disclosed. Novel solvent mixtures have been found to be beneficial in enhancing the penetration of loperamide hydrochloride through the skin.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: March 12, 2002
    Assignee: Atrix Laboratories, Inc.
    Inventor: David W. Osborne
  • Publication number: 20010042317
    Abstract: A process for lyophilizing a solution of an active agent in a delivery container is provided. Solution of active agent is deposited into a delivery container, the container is covered with a covering plate and placed inside a lyophilizing apparatus. Lyophilization is conducted to dryness by radiation, convection or both. Also provided is a device made by this process, an active agent-plastic administration device such as a syringe containing an active agent in the form of lyophilized cake, and an array of such administration devices.
    Type: Application
    Filed: July 20, 2001
    Publication date: November 22, 2001
    Applicant: Atrix Laboratories, Inc.
    Inventors: Cody L. Yarborough, Dominic Gregory Madril, Rajan Bawa
  • Publication number: 20010033853
    Abstract: The invention is directed to a filamentous porous film that can act as a support for cellular attachment, growth and organization. The film is formed from filaments which define a matrix structure with pores.
    Type: Application
    Filed: June 5, 2001
    Publication date: October 25, 2001
    Applicant: Atrix Laboratories, Inc.
    Inventors: Deryl D. Swanbom, Richard L. Dunn, Michelle Botz, Kenneth C. Godowski, Scott Jeffers
  • Patent number: RE37950
    Abstract: A biodegradable polymer is provided for use in providing syringeable, in-situ forming, solid biodegradable implants for animals. The polymer is placed into the animal in liquid form and cures to form the implant in-situ. A thermoplastic system to form said implant comprises the steps of dissolving a non-reactive polymer in biocompatible solvent to form a liquid, placing the liquid within the animal, and allowing the solvent to dissipate to produce the implant. An alternative, thermosetting system comprises mixing together effective amounts of a liquid acrylic ester terminated, biodegradable prepolymer and a curing agent, placing the liquid mixture within an animal and allowing the prepolymer to cure to form the implant. Both systems provide a syringeable, solid biodegradable delivery system by the addition of an effective level of biologically active agent to the liquid before injection into the body.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: December 31, 2002
    Assignee: Atrix Laboratories
    Inventors: Richard L. Dunn, James P. English, Donald R. Cowsar, David P. Vanderbilt