Patents Assigned to DUSA Pharmaceuticals Inc.
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Patent number: 9339540Abstract: This application is directed to a method of treating onychomycosis by applying a phototherapeutic agent to a nail structure, waiting for a period of at least three days, and exposing the nail to light that causes an activation reaction. The phototherapeutic agent may be amino levulinic acid, alkylated derivatives of ALA, and their pharmaceutically acceptable salts.Type: GrantFiled: August 13, 2013Date of Patent: May 17, 2016Assignee: DUSA PHARMACEUTICALS, INC.Inventor: Scott Lundahl
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Patent number: 9241957Abstract: The present invention provides compositions and methods for decreasing photosensitivity induced by photodynamic therapy (PDT). The compositions and methods of the present method employ porphyrin complexing molecules as agents for reducing photosensitivity.Type: GrantFiled: November 25, 2013Date of Patent: January 26, 2016Assignee: DUSA PHARMACEUTICALS, INC.Inventors: Scott Lundahl, Stuart Marcus
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Publication number: 20150105667Abstract: An apparatus and method for photodynamic therapy or photodynamic diagnosis using an illuminator comprising a plurality of light sources generally conforming to a contoured surface and irradiating the contoured surface with substantially uniform intensity visible light. The light sources may comprise generally U-shaped fluorescent tubes that are driven by electronic ballasts. The spacing of the U-shaped tubes is varied to increase the output at the edges of the illuminator to make the output more uniform. Also, different portions of the tubes are cooled at different amounts, to improve uniformity. A light sensor monitors output from the U-shaped tubes to provide a signal for adjusting the output from the tubes.Type: ApplicationFiled: May 20, 2014Publication date: April 16, 2015Applicant: DUSA Pharmaceuticals, Inc.Inventors: Scott LUNDAHL, Rebecca Kozodoy, Ronald Carroll, Elton Leppelmeier
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Publication number: 20140316491Abstract: The present invention provides compositions and methods for decreasing photosensitivity induced by photodynamic therapy (PDT). The compositions and methods of the present method employ porphyrin complexing molecules as agents for reducing photosensitivity.Type: ApplicationFiled: November 25, 2013Publication date: October 23, 2014Applicant: DUSA Pharmaceuticals, Inc.Inventors: Scott Lundahl, Stuart Marcus
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Patent number: 8758418Abstract: An apparatus and method for photodynamic therapy or photodynamic diagnosis using an illuminator comprising a plurality of light sources generally conforming to a contoured surface and irradiating the contoured surface with substantially uniform intensity visible light. The light sources may comprise generally U-shaped fluorescent tubes that are driven by electronic ballasts. The spacing of the U-shaped tubes is varied to increase the output at the edges of the illuminator to make the output more uniform. Also, different portions of the tubes are cooled at different amounts, to improve uniformity. A light sensor monitors output from the U-shaped tubes to provide a signal for adjusting the output from the tubes.Type: GrantFiled: May 31, 2012Date of Patent: June 24, 2014Assignee: Dusa Pharmaceuticals, Inc.Inventors: Scott Lundahl, Rebecca Kozodoy, Ronald Carroll, Elton Leppelmeier
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Publication number: 20140074075Abstract: The invention encompasses a method of inhibiting the growth of hair in skin including epilation of follicles in the skin, waiting until within 5 days of the commencement of metanagen, applying a photodynamic agent to the skin, and exposing the skin to photoactivating light.Type: ApplicationFiled: August 28, 2013Publication date: March 13, 2014Applicant: DUSA PHARMACEUTICALS, INC.Inventor: SCOTT LUNDAHL
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Publication number: 20140052049Abstract: This application is directed to a method of treating onychomycosis by applying a phototherapeutic agent to a nail structure, waiting for a period of at least three days, and exposing the nail to light that causes an activation reaction. The phototherapeutic agent may be amino levulinic acid, alkylated derivatives of ALA, and their pharmaceutically acceptable salts.Type: ApplicationFiled: August 13, 2013Publication date: February 20, 2014Applicant: DUSA PHARMACEUTICALS, INC.Inventor: SCOTT LUNDAHL
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Publication number: 20140046289Abstract: This application is directed to a method of treating a patient with acne by applying a photodynamic agent to skin having acne lesions, waiting at least 12 hours, and then exposing the skin to which the photodynamic agent has been applied to light that causes an activation reaction.Type: ApplicationFiled: August 9, 2013Publication date: February 13, 2014Applicant: DUSA Pharmaceuticals, Inc.Inventor: Scott Lundahl
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Patent number: 8609073Abstract: The present invention provides compositions and methods for decreasing photosensitivity induced by photodynamic therapy (PDT). The compositions and methods of the present method employ porphyrin complexing molecules as agents for reducing photosensitivity.Type: GrantFiled: March 3, 2006Date of Patent: December 17, 2013Assignee: Dusa Pharmaceuticals, Inc.Inventors: Scott Lundahl, Stuart Marcus
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Patent number: 8216289Abstract: An apparatus and method for photodynamic therapy or photodynamic diagnosis using an illuminator comprising a plurality of light sources generally conforming to a contoured surface and irradiating the contoured surface with substantially uniform intensity visible light. The light sources may comprise generally U-shaped fluorescent tubes that are driven by electronic ballasts. Adjustment of the ballast voltage controls the output power of the tubes. The tubes are supported by a sheet-metal or plastic housing and are covered by a polycarbonate shield which directs cooling airflow within the unit and prevents glass-patient contact in the vent of tube breakage. An aluminum reflector located behind the tubes increases both the output irradiance and the uniformity of the output distribution. The spacing of the U-shaped tubes is varied to increase the output at the edges of the illuminator to make the output more uniform. Also, different portions of the tubes are cooled at different amounts, to improve uniformity.Type: GrantFiled: December 16, 2010Date of Patent: July 10, 2012Assignee: Dusa Pharmaceuticals, Inc.Inventors: Scott Lundahl, Rebecca Kozodoy, Ronald Carroll, Elton Leppelmeier
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Patent number: 8030836Abstract: An apparatus and method for photodynamic therapy or photodynamic diagnosis using an illuminator comprising a plurality of light sources generally conforming to a contoured surface and irradiating the contoured surface with substantially uniform intensity visible light. The light sources may comprise generally U-shaped fluorescent tubes that are driven by electronic ballasts. Adjustment of the ballast voltage controls the output power of the tubes. The tubes are supported by a sheet-metal or plastic housing and are covered by a polycarbonate shield which directs cooling airflow within the unit and prevents glass-patient contact in the vent of tube breakage. An aluminum reflector located behind the tubes increases both the output irradiance and the uniformity of the output distribution. The spacing of the U-shaped tubes is varied to increase the output at the edges of the illuminator to make the output more uniform. Also, different portions of the tubes are cooled at different amounts, to improve uniformity.Type: GrantFiled: November 19, 2009Date of Patent: October 4, 2011Assignee: Dusa Pharmaceuticals, Inc.Inventors: Scott Lundahl, Rebecca Kozodoy, Ronald Carroll, Elton Leppelmeier
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Patent number: 8015653Abstract: An applicator device for applying a substance to an area of the body that is difficult to reach includes a collapsible handle and a head portion rotatably mounted on one end. The head portion includes an attachment means, which can comprise either a field of hooks or a field of loops. The attachment means receives a two-sided pad engagement member that preferably has fields of loops or hooks on one side to engage the respective hooks or loops of the attachment member, and a field of hooks on its opposite side. The hooks of the pad engagement member can securely retain a pad that carries the substance to be applied to the body.Type: GrantFiled: January 12, 2006Date of Patent: September 13, 2011Assignee: Dusa Pharmaceuticals, Inc.Inventors: Michael Bargiel, Joshua J. Nelson, Glenn Walters, Frank Pollard
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Patent number: 7723910Abstract: A method of photodynamically diagnosing or treating a contoured surface includes topically applying 5-aminolevulinic acid to the contoured surface and irradiating the contoured surface with substantially uniform intensity visible light from a plurality of light sources generally conforming to the contoured surface. The plurality of light sources may comprise fluorescent tubes.Type: GrantFiled: March 9, 2007Date of Patent: May 25, 2010Assignee: DUSA Pharmaceuticals, Inc.Inventors: Scott Lundahl, Rebecca Kozodoy, Ronald Carroll, Elton Leppelmeier
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Patent number: 7190109Abstract: An apparatus and method for photodynamic therapy or photodynamic diagnosis using an illuminator comprising a plurality of light sources generally conforming to a contoured surface and irradiating the contoured surface with substantially uniform intensity visible light. The light sources may comprise generally U-shaped fluorescent tubes that are driven by electronic ballasts. Adjustment of the ballast voltage controls the output power of the tubes. The tubes are supported by a sheet-metal or plastic housing and are covered by a polycarbonate shield which directs cooling airflow within the unit and prevents glass-patient contact in the event of tube breakage. An aluminum reflector located behind the tubes increases both the output irradiance and the uniformity of the output distribution. The spacing of the U-shaped tubes is varied to increase the output at the edges of the illuminator to make the output more uniform. Also, different portions of the tubes are cooled at different amounts, to improve uniformity.Type: GrantFiled: January 13, 2004Date of Patent: March 13, 2007Assignee: Dusa Pharmaceuticals, Inc.Inventors: Scott Lundahl, Rebecca Kozodoy, Ronald Carroll, Elton Leppelmeier
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Patent number: 6958035Abstract: A medical device sheath apparatus including: a fitting being suitable for receiving the medical device in a self sealing manner; a first sheath for receiving the medical device as it passes through the fitting; a second sheath surrounding the first sheath; a dilator defining a treatment area, coupled to at least the second sheath, and being suitable for dilating a bodily cavity and passing therapeutic or diagnostic energy in such forms as electromagnetic radiation or acoustic energy there through; and, a window operatively positioned with respect to the first sheath so as to enable viewing of an area substantially adjacent the second sheath upon insertion of the medical device into the apparatus.Type: GrantFiled: December 30, 2002Date of Patent: October 25, 2005Assignee: Dusa Pharmaceuticals, IncInventors: Marc David Friedman, Shawn Timothy Moynihan, Anthony Mark Smith
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Publication number: 20040157905Abstract: Methods of detecting and treating rapidly growing exogenous cells, such as Protista, or parasites, that preferentially accumulate a photoactivatable porphyrin in which 5-aminolevulinic acid or precursor thereof is administered to the patient, or contacted to the exogenous cells, in an amount sufficient to induce synthesis fluorescence and/or photosensitizing concentrations of a protoporphyrin IX in the exogenous cells, followed by exposure of the exogenous cells to light of photoactivating wavelengths.Type: ApplicationFiled: September 17, 2003Publication date: August 12, 2004Applicants: DUSA PHARMACEUTICALS, INC., Queen's University at KingstonInventors: James C. Kennedy, Roy H. Pottier, Robert L. Reid
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Publication number: 20040143308Abstract: An apparatus and method for photodynamic therapy or photodynamic diagnosis using an illuminator comprising a plurality of light sources generally conforming to a contoured surface and irradiating the contoured surface with substantially uniform intensity visible light. The light sources may comprise generally U-shaped fluorescent tubes that are driven by electronic ballasts. Adjustment of the ballast voltage controls the output power of the tubes. The tubes are supported by a sheet-metal or plastic housing and are covered by a polycarbonate shield which directs cooling airflow within the unit and prevents glass-patient contact in the event of tube breakage. An aluminum reflector located behind the tubes increases both the output irradiance and the uniformity of the output distribution. The spacing of the U-shaped tubes is varied to increase the output at the edges of the illuminator to make the output more uniform. Also, different portions of the tubes are cooled at different amounts, to improve uniformity.Type: ApplicationFiled: January 13, 2004Publication date: July 22, 2004Applicant: DUSA Pharmaceuticals, Inc.Inventors: Scott Lundahl, Rebecca Kozodoy, Ronald Carroll, Elton Leppelmeier
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Patent number: 6709446Abstract: An apparatus and method for photodynamic therapy or photodynamic diagnosis using an illuminator comprising a plurality of light sources generally conforming to a contoured surface and irradiating the contoured surface with substantially uniform intensity visible light. The light sources may comprise generally U-shaped fluorescent tubes that are driven by electronic ballasts. Adjustment of the ballast voltage controls the output power of the tubes. The tubes are supported by a sheet-metal or plastic housing and are covered by a polycarbonate shield which directs cooling airflow within the unit and prevents glass-patient contact in the event of tube breakage. An aluminum reflector located behind the tubes increases both the output irradiance and the uniformity of the output distribution. The spacing of the U-shaped tubes is varied to increase the output at the edges of the illuminator to make the output more uniform. Also, different portions of the tubes are cooled at different amounts, to improve uniformity.Type: GrantFiled: January 31, 2001Date of Patent: March 23, 2004Assignee: Dusa Pharmaceuticals, Inc.Inventors: Scott Lundahl, Rebecca Kozodoy, Ronald Carroll, Elton Leppelmeier
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Patent number: D552792Type: GrantFiled: January 12, 2006Date of Patent: October 9, 2007Assignee: DUSA Pharmaceuticals, Inc.Inventors: Michael Bargiel, Joshua J. Nelson, Glenn Walters, Frank Pollard
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Patent number: D613872Type: GrantFiled: October 9, 2009Date of Patent: April 13, 2010Assignee: DUSA Pharmaceuticals, Inc.Inventors: Mark Carota, Teresa Nelson, Andrea Nicolaisen