Patents Assigned to Psivida Inc.
-
Publication number: 20120045513Abstract: Disclosed is a sustained release system that includes a polymer and a pharmaceutically active agent dispersed in the polymer. The agent is in granular or particulate form, and has a rate of release from the system that is limited primarily by the rate at which the agent dissolves from the granules into the polymer matrix. Advantageously, the polymer is permeable to the agent and is non-release-rate-limiting with respect to the rate of release of the agent from the polymer.Type: ApplicationFiled: September 9, 2011Publication date: February 23, 2012Applicant: pSivida Inc.Inventors: Paul Ashton, Jianbing Chen, Hong Guo
-
Publication number: 20120016467Abstract: 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: ApplicationFiled: July 19, 2011Publication date: January 19, 2012Applicant: pSivida Inc.Inventors: Jianbing Chen, Paul Ashton, Thomas J. Smith
-
Publication number: 20110165242Abstract: The invention provides liquid controlled-release drug delivery compositions which gel upon injection into the body to form, in situ, controlled-release drug implants. The compositions of the invention feature a gel-forming polymer that is insoluble in water, a polyethylene glycol solvent in which the polymer is dissolved, and the drug substance to be delivered.Type: ApplicationFiled: August 27, 2010Publication date: July 7, 2011Applicant: pSivida Inc.Inventors: Dongling Su, Paul Ashton, Jianbing Chen
-
Publication number: 20100234817Abstract: The invention provides a trocar assembly for delivering a payload into tissue, such as an eye, comprising a primary housing, a cannula, a payload, an actuator and a trocar.Type: ApplicationFiled: February 10, 2010Publication date: September 16, 2010Applicant: pSivida Inc.Inventors: Martin Nazzaro, Hong Guo, Ron LeBlanc, Josh York
-
Publication number: 20100119580Abstract: 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: ApplicationFiled: January 19, 2010Publication date: May 13, 2010Applicant: pSivida Inc.Inventors: Hong Guo, Paul Ashton
-
Publication number: 20100119694Abstract: 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: ApplicationFiled: January 15, 2010Publication date: May 13, 2010Applicant: pSivida Inc.Inventors: Hong Guo, Paul Ashton
-
Publication number: 20100080830Abstract: The systems and methods disclosed herein provide sustained delivery of a therapeutic agent for treating a patient, e.g., human, to obtain a desired local or systemic physiological or pharmacological effect. Method includes positioning the sustained released drug delivery system at an area wherein release of the agent is desired and allowing the agent to pass through the device to the desired area of treatment. In some embodiments, the method is for treating or reducing the risk of retroviral or lentiviral infection. In certain embodiments, the method is for preventing or reducing the risk of mother-to-child transmission of HIV, wherein the therapeutic agent is an antiviral agent.Type: ApplicationFiled: December 3, 2009Publication date: April 1, 2010Applicant: pSivida Inc.Inventors: Paul Ashton, Jianbing Chen, Thomas J. Smith
-
Publication number: 20080161907Abstract: 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: ApplicationFiled: October 2, 2007Publication date: July 3, 2008Applicant: Psivida Inc.Inventors: Jianbing Chen, Paul Ashton
-
Publication number: 20080071246Abstract: Disclosed herein is an injector device including an inserter element, a head element, an implant and a set of detachable protector elements for secured device handling. The device comprises a stop that controls the penetration depth of the device during injection. The device may comprise a removable catch that prevents the implant from exiting the device due to the advancement of its inserter element. The device may comprise a disengageable block that prevents the implant from exiting the device from its head element. The device may be configured for intraocular drug delivery.Type: ApplicationFiled: September 12, 2007Publication date: March 20, 2008Applicant: pSivida Inc.Inventors: Martin Nazzaro, Hong Guo, Ron LeBlanc, Josh York
-
Patent number: 7279175Abstract: 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: GrantFiled: September 17, 2002Date of Patent: October 9, 2007Assignee: Psivida Inc.Inventors: Jianbing Chen, Paul Ashton
-
Publication number: 20070213390Abstract: A compound that contains at least two independently active pharmacological moieties, either covalently conjoined through a physiologically labile linker or ionically associated. One pharmacological moiety is an HMGCoA reductase inhibitor (such as a statin). Another pharmacological moiety is an angiotensin converting enzyme inhibitor.Type: ApplicationFiled: March 14, 2007Publication date: September 13, 2007Applicant: pSivida Inc.Inventors: Tadeusz Cynkowski, Grazyna Cynkowska, Thomas Smith
-
Publication number: 20070160648Abstract: Loss of hearing can be treated by implanting a sustained-release drug delivery device in the inner ear. The slow delivery of medication from the implanted device to the tissues of the ear, including the inner ear, can treat numerous conditions of the ear while avoiding the side effects associated with systemic administration.Type: ApplicationFiled: February 23, 2007Publication date: July 12, 2007Applicant: pSivida Inc.Inventors: Paul Ashton, Hong Guo, Thomas Smith
-
Publication number: 20070112050Abstract: The invention provides a compound comprising a first pharmacological moiety connected to at least a second pharmacological moiety through a physiologically labile linker, or a salt thereof. The invention also provides a method of reducing cardiovascular disease or cardiovascular disease-related conditions in an individual. The method involves administering to an individual with cardiovascular disease an effective amount of a compound, in which the compound has a first pharmacological moiety linked to a second pharmacological moiety, and the compound or either or both of the constituent pharmacological moieties acts to reduce, treat, or prevent cardiovascular disease. The compounds of the invention can be delivered in a drug delivery device.Type: ApplicationFiled: April 12, 2006Publication date: May 17, 2007Applicant: pSivida Inc.Inventors: Paul Ashton, Grazyna Cynkowska, Tadeusz Cynkowski, Thomas Smith
-
Publication number: 20070098760Abstract: 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: ApplicationFiled: December 7, 2006Publication date: May 3, 2007Applicant: pSivida Inc.Inventors: Hong Guo, Paul Ashton
-
Publication number: 20070082041Abstract: 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: ApplicationFiled: December 11, 2006Publication date: April 12, 2007Applicant: pSivida Inc.Inventors: Kenneth Walters, Robert Shimizu, Paul Ashton, Grazyna Cynkowska, Tadeusz Cynkowski, Eric Gauthier
-
Publication number: 20070049568Abstract: A variety of ocular diseases and conditions can be treated using corticosteroids or other compounds having glucocorticoid activity. A consequence of administration of such compounds is elevated intraocular pressure, which causes undesirable side-effects. The unwanted consequences of such elevated intraocular pressure may be prevented or treated through the administration of a steroid antagonist sufficient to counter the deleterious effect of the corticosteroid or other compound having glucocorticoid activity in the anterior chamber of the eye without countering the therapeutic effect of the treatment compound.Type: ApplicationFiled: August 25, 2006Publication date: March 1, 2007Applicant: pSivida Inc.Inventor: Paul Ashton