Patents Assigned to Durect Corporation
  • Publication number: 20180256553
    Abstract: The present invention relates to novel anesthetic compositions containing a non-polymeric carrier material and an anesthetic, where the compositions are suitable for providing a sustained local anesthesia without an initial burst and having a duration for about 24 hours or longer. Certain compositions are also provided that include a first anesthetic and a second anesthetic. In such compositions, the second anesthetic is a solvent for the first anesthetic and provides an initial anesthetic effect upon administration to a subject. The non-polymeric carrier may optionally be a high viscosity liquid carrier material such as a suitable sugar ester. The compositions can further include one or more additional ingredients including active and inactive materials. Methods of using the compositions of the invention to produce a sustained anesthetic effect at a site in a subject are also provided.
    Type: Application
    Filed: January 12, 2018
    Publication date: September 13, 2018
    Applicant: DURECT CORPORATION
    Inventor: Adrian Neil Verity
  • Publication number: 20180256727
    Abstract: The present disclosure generally provides complexes including a pharmaceutically active agent and a functionalized polymer, wherein the functionalized polymer includes repeat units, the repeat units including ionizable repeat units having at least one ionizable side group and/or ionizable end group, a plurality of the at least one ionizable groups forming non-covalent bonds with the pharmaceutically active agent. Polymers which may be used to form such complexes as well as methods of making and using the complexes and related compositions are also provided.
    Type: Application
    Filed: February 2, 2018
    Publication date: September 13, 2018
    Applicant: Durect Corporation
    Inventors: Michael Sekar, Felix Theeuwes, Keith E Branham, John Gibson, James Matriano, Whitney Moro, John Tipton, William Van Osdol, Su Il Yum
  • Publication number: 20180228792
    Abstract: The invention pertains to methods that include administering to a subject a transoral dosage form comprising a pharmaceutical carrier and sufentanil, and maintaining a mean pH ranging from about 3.5 to about 5.5 during a dosing period after administration of the transoral dosage form as determined using an in vitro donor media test. Related dosage forms are also disclosed. Also disclosed are transoral dosage forms and related methods, wherein a transoral dosage form may comprise: (1) about 5 to about 1000 micrograms of sufentanil; (2) about 50 micrograms to about 100 milligrams of naloxone; and (3) acidifying material in an amount sufficient to provide a mean pH ranging from about 3.5 to about 5.
    Type: Application
    Filed: January 12, 2018
    Publication date: August 16, 2018
    Applicant: Durect Corporation
    Inventors: Su Il Yum, Jaymin Shah, Sung Yun Kwon, Xiaoping Song
  • Patent number: 10028957
    Abstract: Disclosed are formulations and related methods that comprise a non-polymeric, non-water soluble high viscosity liquid carrier material having a viscosity of at least 5,000 cP at 37° C. that does not crystallize neat under ambient or physiological conditions; a specified linear polymer comprising lactide repeat units; and one or more solvents that have a solvent capacity.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: July 24, 2018
    Assignee: DURECT CORPORATION
    Inventors: Jeremy C. Wright, Felix Theeuwes, John W. Gibson, Keith E. Branham, Stefania Sjobeck
  • Publication number: 20180140605
    Abstract: Compositions may include a pharmaceutical active agent, a high viscosity liquid carrier material (HVLCM), a lactic acid-based polymer, and an organic solvent. Related compositions and methods are also disclosed.
    Type: Application
    Filed: January 16, 2018
    Publication date: May 24, 2018
    Applicant: DURECT CORPORATION
    Inventors: Jeremy C. WRIGHT, Wilma TAMRAZ, John J. LEONARD, John W. GIBSON, Keith E. BRANHAM, Stefania SJOBECK, Brooks BOYD, Christopher M. RUBINO
  • Publication number: 20180117016
    Abstract: Pharmaceutical compositions comprising an active pharmaceutical ingredient, a high viscosity liquid carrier material, a hydrophobic solvent, and a hydrophilic solvent are disclosed. Also disclosed are methods of manufacturing and using the compositions. The compositions are suitable for use, e.g., as depot formulations.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 3, 2018
    Applicants: DURECT CORPORATION, SANTEN PHARMACEUTICAL CO., LTD.
    Inventors: Wilma TAMRAZ, Huey-Ching SU, WeiQi LIN, Kazuhito YAMADA, Naoki MATSUMOTO, Sreenivasu MUDUMBA, Komei OKABE
  • Publication number: 20180110739
    Abstract: Disclosed are bupivacaine transdermal delivery systems, and related methods.
    Type: Application
    Filed: September 5, 2017
    Publication date: April 26, 2018
    Applicant: Durect Corporation
    Inventors: Su Il Yum, Sung Yun Kwon, Xiaoping Song, James E Brown
  • Patent number: 9918982
    Abstract: Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: March 20, 2018
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, John C. Middleton, Roger Fu, Michael S. Zamloot
  • Patent number: 9907851
    Abstract: The present disclosure provides compositions (e.g., extended release compositions) which exhibit a desirable pharmacokinetic profile of an active agent while providing reduced dissolution sample variability, e.g., in the form of reduced inter-capsule variability and/or a reduction in storage-time dependent change in mean release of the active agent from the composition. Related methods of making and administering the disclosed compositions and formulations are also provided.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: March 6, 2018
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael S. Zamloot, Karl Bratin, Ravi M. Shanker
  • Publication number: 20180036412
    Abstract: Compositions may include a pharmaceutical active agent, a high viscosity liquid carrier material (HVLCM), a lactic acid-based polymer, and an organic solvent. Related compositions and methods are also disclosed. For instance, a carrier formulation for controlled release of injectable drugs is disclosed. The formulation may include a non-water soluble high viscosity liquid which may be sucrose acetate isobutyrate, a lactic-acid based polymer which may be a poly(lactic acid)(glycolic acid), and an organic solvent which maintains the composition in a monophasic form at 25° C. in one atmosphere. Drug in the formulation may be released upon administration such that less than 10% (e.g. 2-8%) of drug is released in the first 5 hours; 10% to 80% of the drug is released during a period of 5 hours to 7 days after administration; and 10% to 40% of the drug is released gradually over a period of 7 days to 28 days from initial administration. The drug may be an anti-schizophrenia agent delivered by injection.
    Type: Application
    Filed: July 18, 2017
    Publication date: February 8, 2018
    Applicant: DURECT CORPORATION
    Inventors: Jeremy C. WRIGHT, Wilma TAMRAZ, John J. LEONARD, John W. GIBSON, Keith E. BRANHAM, Stefania SJOBECK, Brooks Boyd, Christopher M. RUBINO
  • Patent number: 9884056
    Abstract: Controlled release oral dosage forms suitable for administration of methylphenidate are provided. Abuse-resistant controlled release oral dosage forms suitable for administration of methylphenidate are also provided. Methods of treating ADD and ADHD using the oral dosage forms are also provided.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: February 6, 2018
    Assignee: Durect Corporation
    Inventors: Jan J. Scicinski, William W. van Osdol, Huey-Ching Su, Michael H. Arenberg, Jaymin Shah
  • Publication number: 20180000729
    Abstract: Pharmaceutical compositions comprising an active pharmaceutical ingredient, a high viscosity liquid carrier material, a hydrophobic solvent, and a hydrophilic solvent are disclosed. Also disclosed are methods of manufacturing and using the compositions. The compositions are suitable for use, e.g., as depot formulations.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 4, 2018
    Applicants: DURECT CORPORATION, SANTEN PHARMACEUTICAL CO., LTD.
    Inventors: Wilma TAMRAZ, Huey-Ching SU, WeiQi LIN, Kazuhito YAMADA, Naoki MATSUMOTO, Sreenivasu MUDUMBA, Komei OKABE
  • Patent number: 9855333
    Abstract: The present disclosure provides compositions (e.g., extended release compositions) which exhibit a desirable pharmacokinetic profile of an active agent while providing reduced dissolution sample variability, e.g., in the form of reduced inter-capsule variability and/or a reduction in storage-time dependent change in mean release of the active agent from the composition. Related methods of making and administering the disclosed compositions are also provided.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: January 2, 2018
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael S. Zamloot, Karl Bratin, Ravi M. Shanker
  • Publication number: 20170319702
    Abstract: An injectable, nonaqueous suspension including at least one therapeutic agent suspended in a single component vehicle. The single component vehicle is a single amphiphilic material, such as a polyethoxylated castor oil or derivative thereof, a polyoxyethylene alkyl ether, a polyoxyethylene sorbitan fatty acid ester, a polyoxyethylene stearate, a block copolymer of polyethylene oxide-polypropylene oxide-polyethylene oxide, a block copolymer of polypropylene oxide-polyethylene oxide-polypropylene oxide, a tetra-functional block copolymer of polyethylene oxide-polypropylene oxide, or a tetra-functional block copolymer of polypropylene oxide-polyethylene oxide. A dosage kit that includes the injectable, nonaqueous suspension and a method of administering the injectable, nonaqueous suspension are also disclosed.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 9, 2017
    Applicant: Durect Corporation
    Inventors: Paul R. Houston, Guohua Chen, Andrew Luk
  • Publication number: 20170239252
    Abstract: An injectable depot formulation includes a biocompatible polymer, an organic solvent combined with the biocompatible polymer to form a viscous gel, and a small molecule drug incorporated in the viscous gel such that the formulation exhibits an in vivo release profile having Cmax to Cmin ratio less than 200 and lag time less than 0.2.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 24, 2017
    Applicant: DURECT CORPORATION
    Inventors: Andrew S. LUK, Gunjan H. JUNNARKAR, Guohua CHEN
  • Patent number: 9737605
    Abstract: Compositions may include a pharmaceutical active agent, a high viscosity liquid carrier material (HVLCM), a lactic acid-based polymer, and an organic solvent. Related compositions and methods are also disclosed. For instance, a carrier formulation for controlled release of injectable drugs is disclosed. The formulation may include a non-water soluble high viscosity liquid which may be sucrose acetate isobutyrate, a lactic-acid based polymer which may be a poly(lactic acid)(glycolic acid), and an organic solvent which maintains the composition in a monophasic form at 25° C. in one atmosphere. Drug in the formulation may be released upon administration such that less than 10% (e.g. 2-8%) of drug is released in the first 5 hours; 10% to 80% of the drug is released during a period of 5 hours to 7 days after administration; and 10% to 40% of the drug is released gradually over a period of 7 days to 28 days from initial administration. The drug may be an anti-schizophrenia agent delivered by injection.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: August 22, 2017
    Assignee: DURECT CORPORATION
    Inventors: Jeremy C. Wright, Wilma Tamraz, John J. Leonard, John W. Gibson, Keith E. Branham, Stefania Sjobeck, Brooks Boyd, Christopher M. Rubino
  • Publication number: 20170216267
    Abstract: The present invention relates to novel anesthetic compositions containing a non-polymeric carrier material and an anesthetic, where the compositions are suitable for providing a sustained local anesthesia without an initial burst and having a duration for about 24 hours or longer. Certain compositions are also provided that include a first anesthetic and a second anesthetic. In such compositions, the second anesthetic is a solvent for the first anesthetic and provides an initial anesthetic effect upon administration to a subject. The non-polymeric carrier may optionally be a high viscosity liquid carrier material such as a suitable sugar ester. The compositions can further include one or more additional ingredients including active and inactive materials. Methods of using the compositions of the invention to produce a sustained anesthetic effect at a site in a subject are also provided.
    Type: Application
    Filed: January 9, 2017
    Publication date: August 3, 2017
    Applicant: DURECT CORPORATION
    Inventor: Adrian Neil Verity
  • Publication number: 20170196989
    Abstract: The present disclosure is directed to a method of making a composition by combining a vehicle, e.g., a single phase vehicle, and an insoluble component comprising a beneficial agent, and sterilizing the composition using ionizing radiation prior to use, wherein the beneficial agent is stable following exposure to a sterilizing dose of ionizing radiation. Related compositions and methods are provided.
    Type: Application
    Filed: December 19, 2016
    Publication date: July 13, 2017
    Applicant: Durect Corporation
    Inventors: Michael Sekar, Su Il Yum, Felix Theeuwes, William W. van Osdol
  • Publication number: 20170143721
    Abstract: Compositions may include a pharmaceutical active agent, a high viscosity liquid carrier material (HVLCM), a lactic acid-based polymer, and an organic solvent. Related compositions and methods are also disclosed.
    Type: Application
    Filed: January 5, 2017
    Publication date: May 25, 2017
    Applicants: DURECT CORPORATION, ZOGENIX INC.
    Inventors: Jeremy C. WRIGHT, Wilma TAMRAZ, John J. LEONARD, John W. GIBSON, Keith E. BRANHAM, Stefania SJOBECK, Brooks BOYD, Christopher M. RUBINO
  • Patent number: 9655861
    Abstract: Abuse-resistant oral dosage forms suitable for administration of pharmacologically active agents are provided.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: May 23, 2017
    Assignee: DURECT CORPORATION
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael Zamloot