Patents by Inventor Houdin Dehnad

Houdin Dehnad 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: 20090125043
    Abstract: Disclosed is an apparatus and a method for removable of undesired material from body lumens. The apparatus may be used for fragmenting or removing a thrombus or occlusion from a blood vessel. The apparatus includes first shape segments and second shape segments connected to form a coiled member. A longitudinally extending tether is positioned inside the first shape segments and outside the second shape segments along the length of the coil. Applying a proximal force on the tether produces a change in the shape of at least a portion of the coil from a first generally linear configuration to a second complex three dimensional shape. A method of using the apparatus to engage and remove, or fragment, the thrombus or occlusion is disclosed.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 14, 2009
    Inventor: Houdin Dehnad
  • Publication number: 20080317939
    Abstract: A method and system for modifying a drug delivery polymeric substrate for an implantable device, such as a stent, is disclosed.
    Type: Application
    Filed: August 28, 2008
    Publication date: December 25, 2008
    Applicant: Advanced Cardiovascular Systems Inc.
    Inventor: Houdin Dehnad
  • Patent number: 7431959
    Abstract: A method and system for modifying a drug eluting polymeric substrate for an implantable device, such as a stent, is disclosed.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: October 7, 2008
    Assignee: Advanced Cardiovascular Systems Inc.
    Inventor: Houdin Dehnad
  • Publication number: 20080226689
    Abstract: This invention relates to stable non-aqueous single phase viscous vehicles and to formulations utilizing such vehicles. The formulations comprise at least one beneficial agent uniformly suspended in the vehicle. The formulation is capable of being stored at temperatures ranging from cold to body temperature for long periods of time. The formulations are capable of being uniformly delivered from drug delivery systems at an exit shear rate of between about 1 to 1×10?7 reciprocal second.
    Type: Application
    Filed: March 11, 2008
    Publication date: September 18, 2008
    Inventors: Stephen A. Berry, Pamela J. Fereira, Houdin Dehnad, Anna Muchnik
  • Publication number: 20080226625
    Abstract: This invention relates to stable non-aqueous single phase viscous vehicles and to formulations utilizing such vehicles. The formulations comprise at least one beneficial agent uniformly suspended in the vehicle. The formulation is capable of being stored at temperatures ranging from cold to body temperature for long periods of time. The formulations are capable of being uniformly delivered from drug delivery systems at an exit shear rate of between about 1 to 1×10?7 reciprocal second.
    Type: Application
    Filed: March 17, 2008
    Publication date: September 18, 2008
    Inventors: Stephen A. Berry, Pamela J. Fereira, Houdin Dehnad, Anna Muchnik
  • Patent number: 7407500
    Abstract: An osmotic delivery system flow modulator assembly, an osmotic delivery system with a flow modulator assembly, and a method of assembling an osmotic delivery system. The osmotic delivery system flow modular assembly includes a body having a hole located through the body and communicating two opposing ends of the body. The use of the osmotic delivery system flow modulator assembly lessens the chance that air or gas pockets will form in the enclosure of the osmotic delivery system during assembly of the system. Because less air is within the osmotic delivery system, performance of the system is enhanced. Use of the flow modulator assembly also lessens the chance that beneficial agent will be wasted during assembly of the osmotic delivery system.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: August 5, 2008
    Assignee: ALZA Corporation
    Inventors: Lewis L. Peterson, Fred H. Maruyama, Houdin Dehnad, Lawton Hom, Kevin S. Ly, Craig R. Davis, John R. Peery
  • Publication number: 20080071253
    Abstract: An osmotic delivery system flow modulator assembly, an osmotic delivery system with a flow modulator assembly, and a method of assembling an osmotic delivery system. The osmotic delivery system flow modular assembly includes a body having a hole located through the body and communicating two opposing ends of the body. The use of the osmotic delivery system flow modulator assembly lessens the chance that air or gas pockets will form in the enclosure of the osmotic delivery system during assembly of the system. Because less air is within the osmotic delivery system, performance of the system is enhanced. Use of the flow modulator assembly also lessens the chance that beneficial agent will be wasted during assembly of the osmotic delivery system.
    Type: Application
    Filed: September 16, 2007
    Publication date: March 20, 2008
    Applicant: ALZA CORPORATION
    Inventors: Lewis Peterson, Fred Maruyama, Houdin Dehnad, Lawton Hom, Kevin Sly, Craig Davis, John Peery
  • Patent number: 7258869
    Abstract: This invention relates to stable non-aqueous single phase viscous vehicles and to formulations utilizing such vehicles. The formulations comprise at least one beneficial agent uniformly suspended in the vehicle. The formulation is capable of being stored at temperatures ranging from cold to body temperature for long periods of time. The formulations are capable of being uniformly delivered from drug delivery systems at an exit shear rate of between about 1 to 1×10?7 reciprocal second.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: August 21, 2007
    Assignee: Alza Corporation
    Inventors: Stephen A. Berry, Pamela J. Fereira, Houdin Dehnad, Anna Muchnik
  • Patent number: 7087263
    Abstract: A coating for a medical device, particularly for a drug eluting stent, is described. The coating comprises a polymer having a weight-average molecular weight between about 200,000 and about 250,000 Daltons or a polydispersity index between about 2.6 and about 3.0.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: August 8, 2006
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F A Hossainy, Fuh-Wei Tang, Houdin Dehnad
  • Publication number: 20050209680
    Abstract: A device and a method of manufacturing an implantable medical device, such as a stent, are described herein. The device includes a metallic region composed of a bioerodable metal and a polymer region composed of a biodegradable polymer contacting the metallic region. The metallic region may erode at a different rate when exposed to bodily fluids than the polymer region when exposed to bodily fluids. In certain embodiments, the polymer region is an outer layer and the metallic region is an inner layer of the device. A further aspect of the invention includes device and a method of manufacturing the device that includes a mixture of a biodegradable polymer and bioerodable metallic particles. The mixture may be used to fabricate an implantable medical device or to coat an implantable medical device. In some embodiments, the metallic particles are metallic nanoparticles.
    Type: Application
    Filed: June 28, 2004
    Publication date: September 22, 2005
    Inventors: David Gale, Bin Huang, John Capek, John Yan, Houdin Dehnad
  • Publication number: 20050131389
    Abstract: An osmotic delivery system flow modulator assembly, an osmotic delivery system with a flow modulator assembly, and a method of assembling an osmotic delivery system. The osmotic delivery system flow modular assembly includes a body having a hole located through the body and communicating two opposing ends of the body. The use of the osmotic delivery system flow modulator assembly lessens the chance that air or gas pockets will form in the enclosure of the osmotic delivery system during assembly of the system. Because less air is within the osmotic delivery system, performance of the system is enhanced. Use of the flow modulator assembly also lessens the chance that beneficial agent will be wasted during assembly of the osmotic delivery system.
    Type: Application
    Filed: November 22, 2004
    Publication date: June 16, 2005
    Inventors: Lewis Peterson, Fred Maruyama, Houdin Dehnad, Lawton Hom, Kevin Ly, Craig Davis, John Peery
  • Patent number: 6840931
    Abstract: An osmotic delivery system flow modulator assembly, an osmotic delivery system with a flow modulator assembly, and a method of assembling an osmotic delivery system. The osmotic delivery system flow modular assembly includes a body having a hole located through the body and communicating two opposing ends of the body. The use of the osmotic delivery system flow modulator assembly lessens the chance that air or gas pockets will form in the enclosure of the osmotic delivery system during assembly of the system. Because less air is within the osmotic delivery system, performance of the system is enhanced. Use of the flow modulator assembly also lessens the chance that beneficial agent will be wasted during assembly of the osmotic delivery system.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: January 11, 2005
    Assignee: ALZA Corporation
    Inventors: Lewis L. Peterson, Fred H. Maruyama, Houdin Dehnad, Lawton Hom, Kevin S. Ly, Craig R. Davis, John R. Peery
  • Publication number: 20040088038
    Abstract: An intravascular stent for controlled release of therapeutic drugs and for delivery of the therapeutic drugs in localized drug therapy in a blood vessel having a tubular stent member formed of a microcellular porous metal capable of absorbing and releasing therapeutic drugs, wherein a thin layer of a polymeric material is applied to an outer surface of the tubular stent member. A method of making a polymer coated, porous metal stent having sufficient strength and capable of absorbing and releasing therapeutic drugs for the delivery of same in localized drug therapy at an intravascular site is also disclosed herein.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Inventors: Houdin Dehnad, Klaus Kleine, Pamela A. Kramer, James M. Carlson
  • Publication number: 20040072922
    Abstract: A coating for a medical device, particularly for a drug eluting stent, is described. The coating comprises a polymer having a weight-average molecular weight between about 200,000 and about 250,000 Daltons or a polydispersity index between about 2.6 and about 3.0.
    Type: Application
    Filed: October 9, 2002
    Publication date: April 15, 2004
    Inventors: Syed F.A. Hossainy, Fuh-Wei Tang, Houdin Dehnad
  • Publication number: 20030114837
    Abstract: An osmotic delivery system flow modulator assembly, an osmotic delivery system with a flow modulator assembly, and a method of assembling an osmotic delivery system. The osmotic delivery system flow modular assembly includes a body having a hole located through the body and communicating two opposing ends of the body. The use of the osmotic delivery system flow modulator assembly lessens the chance that air or gas pockets will form in the enclosure of the osmotic delivery system during assembly of the system. Because less air is within the osmotic delivery system, performance of the system is enhanced. Use of the flow modulator assembly also lessens the chance that beneficial agent will be wasted during assembly of the osmotic delivery system.
    Type: Application
    Filed: October 25, 2002
    Publication date: June 19, 2003
    Inventors: Lewis L. Peterson, Fred H. Maruyama, Houdin Dehnad, Lawton Hom, Kevin S. Ly, Craig R. Davis, John R. Peery
  • Publication number: 20030108609
    Abstract: This invention relates to stable non-aqueous single phase viscous vehicles and to formulations utilizing such vehicles. The formulations comprise at least one beneficial agent uniformly suspended in the vehicle. The formulation is capable of being stored at temperatures ranging from cold to body temperature for long periods of time. The formulations are capable of being uniformly delivered from drug delivery systems at an exit shear rate of between about 1 to 1×10−7 reciprocal second.
    Type: Application
    Filed: December 12, 2002
    Publication date: June 12, 2003
    Inventors: Stephen A. Berry, Pamela J. Fereira, Houdin Dehnad, Anna Muchnik
  • Patent number: 6524305
    Abstract: An osmotic delivery system flow modulator assembly, an osmotic delivery system with a flow modulator assembly, and a method of assembling an osmotic delivery system. The osmotic delivery system flow modular assembly includes a body having a hole located through the body and communicating two opposing ends of the body. The use of the osmotic delivery system flow modulator assembly lessens the chance that air or gas pockets will form in the enclosure of the osmotic delivery system during assembly of the system. Because less air is within the osmotic delivery system, performance of the system is enhanced. Use of the flow modulator assembly also lessens the chance that beneficial agent will be wasted during assembly of the osmotic delivery system.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: February 25, 2003
    Assignee: Alza Corporation
    Inventors: Lewis L. Peterson, Fred H. Maruyama, Houdin Dehnad, Lawton Hom, Kevin S. Ly, Craig R. Davis, John R. Peery
  • Patent number: 5685484
    Abstract: A pressurized water toy providing a pressure actuated pulsator for shooting water in consecutive pulses. The pressure actuated pulsator includes expansible inlet and outlet tubing, a reservoir for the temporary retention of water, and a sphere-shaped obturator for temporarily blocking the flow of water through the outlet tubing. Flow of pressurized water into the expansible tubing expands and elongates the tubing and forces a seal to be formed by biasing the sphere-shaped obturator against a first end of the outlet tubing compressing a spring. A buildup of pressure behind the obturator causes the expansible tubing to expand and permit passage of the pressurized water around the obturator and into and through the nozzle. When the pressure behind the obturator drops below a certain level, the obturator again blocks the orifice into the outlet tubing causing a buildup of pressure there behind and the cycling of pulse of water flow continues.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: November 11, 1997
    Inventor: Houdin Dehnad