Patents by Inventor Paul Ashton

Paul Ashton 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: 20030158598
    Abstract: The subject invention provides medical devices having a coating disposed on at least one surface, wherein the coating includes a polymer matrix and a low solubility anti-inflammatory corticosteroid formulation, or low solubility codrug or prodrug of an anti-inflammatory corticosteroid formulation.
    Type: Application
    Filed: January 14, 2003
    Publication date: August 21, 2003
    Applicant: Control Delivery Systems, Inc.
    Inventors: Paul Ashton, Jianbing Chen
  • Publication number: 20030139811
    Abstract: A therapeutically effective compound is locally administered by associating the compound with a piece of orthopedic hardware that is implanted at an appropriate site within a body. The compound is adapted, such as through a sustained release device, to administer an effective dosage continuously over an extended period of time. The compound may be administered, for example, to a joint of a mammal by intraarticularly implanting a sustained release device to deliver the therapeutically effective compound within a synovial capsule of the joint, such that synovial fluid concentration of the compound is greater than plasma concentration of the compound. A wide range of orthopedic hardware, such as bone screws and staples, may be adapted to use in the systems described herein to provide treatment for a variety of medical conditions.
    Type: Application
    Filed: May 2, 2002
    Publication date: July 24, 2003
    Applicant: Control Delivery Systems, Inc.
    Inventors: David A. Watson , Thomas J. Smith , Jianbing Chen , Richard Laporte , Paul Ashton
  • Publication number: 20030118528
    Abstract: The present invention provides pharmaceutical compositions for topical delivery comprising a suitable carrier and a codrug capable of penetrating, or being transported across, the dermis. The codrug according to the invention comprises a first constituent moiety linked to a second constituent moiety, wherein the second constituent moiety is the same as, or different from, the first constituent moiety. The first and second constituent moieties are so linked that they are easily transported into or across the dermis, into the skin, or into the blood or lymphatic system, and are reconstituted in vivo to form the first and second constituent moieties.
    Type: Application
    Filed: November 19, 2002
    Publication date: June 26, 2003
    Inventors: Kenneth A. Walters, Robert Shimizu, Paul Ashton, Grazyna Cynkowska, Tadeusz Cynkowski, Eric Gauthier
  • Publication number: 20030108588
    Abstract: An intraluminal medical device comprises a stent having a coating applied to at least part of an interior surface, an exterior surface, or both. The coating comprises a sustained release formulation of a combination of pharmaceutical compounds dispersed within a biologically tolerated polymer composition. The choice of the combination of pharmaceutical compounds are intended to reduce neointimal hyperplasia restenosis.
    Type: Application
    Filed: September 17, 2002
    Publication date: June 12, 2003
    Inventors: Jianbing Chen, Paul Ashton
  • Patent number: 6548078
    Abstract: The present invention relates to a method for administering a corticosteroid to a posterior segment of an eye. In the method, a sustained release device is implanted to deliver the corticosteroid to the eye. The aqueous corticosteroid concentration remains less than vitreous corticosteroid concentration during release of the corticosteroid from the device.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: April 15, 2003
    Assignee: Control Delivery Systems
    Inventors: Hong Guo, Paul Ashton
  • Publication number: 20030039689
    Abstract: Disclosed is a sustained release system that includes a polymer and a prodrug having a solubility less than about 1 mg/ml dispersed in the polymer. Advantageously, the polymer is permeable to the prodrug and may be non-release rate limiting with respect to the rate of release of the prodrug from the polymer. This permits improved drug delivery within a body in the vicinity of a surgery via sustained release rate kinetics over a prolonged period of time, while not requiring complicated manufacturing processes.
    Type: Application
    Filed: April 26, 2002
    Publication date: February 27, 2003
    Inventors: Jianbing Chen, Paul Ashton, Thomas J. Smith
  • Publication number: 20030022876
    Abstract: A pharmaceutically active inventive compound comprises two independently active analgesic moieties covalently conjoined through a physiologically labile linker. A preferred embodiment comprises an opioid, such as morphine, covalently linked to at least one analgesic compound selected from the group consisting of an opioid or a non-opioid compound through a physiologically labile linker. Suitable covalent linkers are covalently bonded to the two independently active analgesic compounds through one or more lactone, lactam, or sulfonamido linkages. Suitable linkers include endogenous carboxylate, amido, and sulfonamido moieties, and exogenous moieties that form the aforementioned lactone, lactam or sulfonamido linkages.
    Type: Application
    Filed: June 5, 2002
    Publication date: January 30, 2003
    Inventors: Paul A. Ashton, Thomas J. Smith, Tadeusz Cynkowski, Grazyna Cynkowska, Edmund Mickunas
  • Publication number: 20030021828
    Abstract: The present invention relates to a method for administering a corticosteroid to a posterior segment of an eye. In the method, a sustained release device is implanted to deliver the corticosteroid to the eye. The aqueous corticosteroid concentration remains less than vitreous corticosteroid concentration during release of the corticosteroid from the device.
    Type: Application
    Filed: September 25, 2002
    Publication date: January 30, 2003
    Applicant: Control Delivery Systems
    Inventors: Hong Guo, Paul Ashton
  • Publication number: 20020169162
    Abstract: An implantable drug delivery system is provided including a mechanical member attachable to a portion of a body, a first chamber having an opening configured to receive a sustained release device, a sustained release device, and a removably attachable retainer for retaining the sustained release device in the first chamber. A method for administering a drug to a joint is provided including the steps of positioning a mechanical member in or adjacent a bone, the mechanical member configured to hold a sustained release drug delivery device bearing at least one drug, and outputting the at least one drug from the sustained release drug delivery device at a substantially controlled rate.
    Type: Application
    Filed: November 2, 2001
    Publication date: November 14, 2002
    Inventors: Thomas J. Smith, David A. Watson, Richard LaPorte, Hong Guo, Jianbing Chen, Paul Ashton
  • Publication number: 20020127250
    Abstract: The present invention relates to a method for administering a corticosteroid to a posterior segment of an eye. In the method, a sustained release device is implanted to deliver the corticosteroid to the eye. The aqueous corticosteroid concentration remains less than vitreous corticosteroid concentration during release of the corticosteroid from the device.
    Type: Application
    Filed: December 14, 2000
    Publication date: September 12, 2002
    Applicant: Control Delivery Systems
    Inventors: Hong Guo, Paul Ashton
  • Publication number: 20020102307
    Abstract: A method and device for treating a mammalian organism to obtain a desired local or systemic physiological or pharmacological effect is provided. The method includes administering a sustained release drug delivery system to a mammalian organism in need of such treatment at an area wherein release of an effective agent is desired and allowing the effective agent to pass through the device in a controlled manner. The device includes an inner core or reservoir including the effective agent, an impermeable tube which encloses portions of the reservoir, and a permeable member at an end of the tube.
    Type: Application
    Filed: March 14, 2002
    Publication date: August 1, 2002
    Inventors: Hong Guo, Paul Ashton
  • Patent number: 6375972
    Abstract: A method and device for treating a mammalian organism to obtain a desired local or systemic physiological or pharmacological effect is provided. The method includes administering a sustained release drug delivery system to a mammalian organism in need of such treatment at an area wherein release of an effective agent is desired and allowing the effective agent to pass through the device in a controlled manner. The device includes an inner core or reservoir including the effective agent, an impermeable tube which encloses portions of the reservoir, and a permeable member at an end of the tube.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: April 23, 2002
    Assignee: Control Delivery Systems, Inc.
    Inventors: Hong Guo, Paul Ashton
  • Patent number: 6217895
    Abstract: The present invention relates to a method for administering a corticosteroid to a posterior segment of an eye. In the method, a sustained release device is implanted to deliver the corticosteroid to the eye. The aqueous corticosteroid concentration remains less than vitreous corticosteroid concentration during release of the corticosteroid from the device.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: April 17, 2001
    Assignee: Control Delivery Systems
    Inventors: Hong Guo, Paul Ashton
  • Patent number: 6051576
    Abstract: A codrug composition of at least two drug compounds covalently linked to one another via a labile bond to form a single codrug composition, or ionically linked to one another to form a single workings composition, and methods of use of the codrug for the treatment of various medical conditions. The codrug may be administered by itself or in the form of a bioerodible or nonbioerodible substance.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: April 18, 2000
    Assignee: University Of Kentucky Research Foundation
    Inventors: Paul Ashton, Peter Anthony Crooks, Tadeusz Cynkowski, Grazyna Cynkowska, Hone Guo
  • Patent number: 6001386
    Abstract: A simple and implantable sustained release drug delivery device with an inner core containing an effective amount of a low solubility agent covered by a non-bioerodible polymer coating layer that is permeable to the low solubility agent is disclosed. A method for treating a mammal to obtain a desired local or systemic physiological or pharmacological effect by surgically implanting such a sustained release drug delivery device into a mammal in need of treatment is also disclosed.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: December 14, 1999
    Assignee: University of Kentucky Research Foundation
    Inventors: Paul Ashton, Paul A. Pearson
  • Patent number: 5902598
    Abstract: A method and device for treating a mammalian organism to obtain a desired local or systemic physiological or pharmacological effect is provided. The method includes administering a sustained release drug delivery system to a mammalian organism in need of such treatment at an area wherein release of an effective agent is desired and allowing the effective agent to pass through the device in a controlled manner. The device includes an inner core or reservoir comprising the effective agent; a first coating layer, which is permeable to the passage of the effective agent; a second coating layer, which is essentially impermeable to the passage of the effective agent; and a third coating layer, which is permeable to the passage of the effective agent. The first coating layer covers at least a portion of the inner core.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: May 11, 1999
    Assignee: Control Delivery Systems, Inc.
    Inventors: Jianbing Chen, Paul Ashton
  • Patent number: 5836935
    Abstract: An implantable, refillable, rate-controlled drug delivery device, with a hollow reservoir, and a drug delivery tube communicating with the hollow reservoir. The drug delivery tube includes at least one rate-limiting permeable membrane which regulates drug delivery. A method of controlling the delivery of a drug to an internal portion of a body is disclosed.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: November 17, 1998
    Inventors: Paul Ashton, Roy A. Patchell, Jon Cooper, Byron A. Young
  • Patent number: 5773019
    Abstract: A simple and implantable sustained release drug delivery device with an inner core containing an effective amount of a low solubility agent covered by a non-bioerodible polymer coating layer that is permeable to the low solubility agent is disclosed. A method for treating a mammal to obtain a desired local or systemic physiological or pharmacological effect by surgically implanting such a sustained release drug delivery device into a mammal in need of treatment is also disclosed.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: June 30, 1998
    Assignee: The University of Kentucky Research Foundation
    Inventors: Paul Ashton, Paul A. Pearson
  • Patent number: 5681964
    Abstract: Prodrugs containing an active drug molecule linked to a polyethylene glycol group, and a method of use thereof are described. Exemplary soluble ester prodrugs contain naproxen, triamcinolone acetonide, gancyclovir, taxol, cyclosporin, dideoxyinosine, trihydroxy steroids, and flurbiprofen molecules linked to polyethylene glycol (PEG) groups. Pharmaceutical compositions containing these prodrugs, and a method of using these esters for treating disease states or symptoms are also described.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: October 28, 1997
    Assignee: University of Kentucky Research Foundation
    Inventors: Paul Ashton, Thomas J. Smith, Peter G. Glavinos, John D. Conklin, Jr., Peter A. Crooks, Robert M. Riggs, Tadeusz Cynkowski, Grazyna Cynkowska
  • Patent number: 5678042
    Abstract: A network management system includes a domain administrating server (DAS) that stores a virtual catalog representing an overview of all files distributively stored across a network domain currently or in the past. The current and historical file information is used for assisting in auditing or locating files located anywhere in the domain. The current file information is used for assisting in transferring files across the domain. The domain administrating server (DAS) also includes a rule-base driven artificial administrator for monitoring and reacting to domain-wide alert reports and for detecting problematic trends in domain-wide performance based on information collected from the network domain.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: October 14, 1997
    Assignee: Seagate Technology, Inc.
    Inventors: Thomas Pisello, David Crossmier, Paul Ashton