Patents by Inventor Steven R. Larsen

Steven R. Larsen 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).

  • Patent number: 9173696
    Abstract: Systems for nerve and tissue modulation are disclosed. An example system may include an intravascular nerve modulation system including an elongated shaft having a proximal end region and a distal end region. The system may include an expandable frame having one or more electrodes positioned on or about the frame. An actuation assembly including a biasing element, a central shaft, and a piston may be configured to provide for controlled expansion of the expandable frame. The system may further include a control element for controlling the actuation assembly.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: November 3, 2015
    Assignee: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Travis J. Schauer, Eric Petersen, Steven R. Larsen
  • Publication number: 20150119724
    Abstract: Catheter systems and methods for determining blood flow rates based on light reflection measurements. The catheter may include a lumen extending between a proximal end of the catheter and a distal end of the catheter. The catheter may include fluid infusion openings at the distal end region of the catheter that are configured to permit the indicator fluid to exit the catheter from the lumen. The catheter system may include an optical fiber having one or more sensors thereon for sensing light reflected by blood particles in a body vessel lumen. A blood flow rate may be determined based on the sensed light reflected by blood particles in the body vessel lumen.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 30, 2015
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: JAN WEBER, JAMES M. ANDERSON, AIDEN FLANAGAN, ERIC M. PETERSEN, STEVEN R. LARSEN
  • Publication number: 20140134322
    Abstract: Nanoparticles can be embedded into a medical device by accelerating them to a speed of between 100 m/s and 1,000 m/s and embedding the particles into a polymer surface of a medical device or a precursor thereof. In some cases, the nanoparticles can be embedded until the nanoparticles accumulate in sufficient number to adhere together to form a coating over the polymer surface. The nanoparticles can provide a conductive pathway, an abrasion resistant surface, a pro-healing surface, and/or an anti-bacterial surface.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 15, 2014
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Steven R. Larsen, Eric Petersen, Scott R. Schewe
  • Publication number: 20140081261
    Abstract: Systems for nerve and tissue modulation are disclosed. An example system may include an intravascular nerve modulation system including an elongated shaft having a proximal end region and a distal end region. The system may include an expandable frame having one or more electrodes positioned on or about the frame. An actuation assembly including a biasing element, a central shaft, and a piston may be configured to provide for controlled expansion of the expandable frame. The system may further include a control element for controlling the actuation assembly.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 20, 2014
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: TRAVIS J. SCHAUER, ERIC PETERSEN, STEVEN R. LARSEN
  • Patent number: 8668732
    Abstract: An endoprosthesis includes an expandable tubular body defined by a plurality of struts. In some embodiments, the expandable tubular body includes a bioerodible metal that has at least a first surface region and a second surface region. The first and second surface regions can have different surface oxide compositions. In some embodiments, the first portion has a thermally altered microstructure and the second portion has a wrought microstructure. The thermally altered microstructure can be a cast microstructure comprising dendritic grains. The first portion forms at least a portion of an outer surface of the expandable tubular body. In some embodiments, the expandable tubular body includes iron or a bioerodible iron alloy and at least one surface of the expandable tubular body includes a substantially uniform coating of iron(III) oxide.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: March 11, 2014
    Assignee: Boston Scientific SciMed, Inc.
    Inventors: Torsten Scheuermann, Jan Weber, Charles Deng, Jonathan S. Stinson, Steven R. Larsen, Dennis A. Boismier, Jacob D. Edick
  • Publication number: 20140067031
    Abstract: Medical devices may include an electrode that has been processed to increase its surface area. In some cases, an electrode may be processed using an ultrafast laser to produce an electrode surface that includes macrostructures formed within the electrode surface and nanostructures formed on the macrostructures. The nanostructures may be formed of material that was removed from the electrode surface in forming the macrostructures.
    Type: Application
    Filed: September 3, 2013
    Publication date: March 6, 2014
    Applicant: Cardiac Pacemakers, Inc.
    Inventors: Eric M. Petersen, Steven R. Larsen
  • Publication number: 20140052097
    Abstract: Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a guide extension catheter. The guide extension catheter may include an elongate tubular member having a proximal region, a distal region, and a slot formed in the tubular member between the proximal region and the distal region. The proximal region of the tubular member may be configured to shift between a first configuration and a collapsed configuration. The guide extension catheter may also include an elongate shaft for shifting the proximal region between the first configuration and the collapsed configuration.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 20, 2014
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: ERIC M. PETERSEN, STEVEN R. LARSEN, WAYNE FALK, JOEL M. WASDYKE, HUISUN WANG
  • Publication number: 20130296678
    Abstract: An implantable medical lead including a proximal end portion and a distal end portion and an electrical conductor electrically connected to the proximal end portion of the lead body. Also, the lead has at least one electrode connected to the distal end portion of the lead body and connected to the electrical conductor. The electrode includes a conductive base structure, a first set of pores formed on an outer surface of the conductive base structure, the first set of pores having an average first pore dimension of between about ¼th and about 1/100th an electrode dimension, and a second set of pores formed on at least a portion of the first set of pores, the second set of pores having an average second pore dimension of between about ¼th and about 1/100th average first pore dimension.
    Type: Application
    Filed: April 23, 2013
    Publication date: November 7, 2013
    Inventors: Steven R. Larsen, Arthur J. Foster, Rakesj Radhakrishnan, Eric M. Petersen
  • Publication number: 20120053674
    Abstract: A bioerodible endoprosthesis erodes to a desirable geometry that can provide, e.g., improved mechanical properties or degradation characteristics.
    Type: Application
    Filed: November 8, 2011
    Publication date: March 1, 2012
    Applicant: Boston Scientific SciMed, Inc.
    Inventors: Dennis A. Boismier, Timothy S. Girton, Steven R. Larsen, Matt Shedlov, Ken Merdan, Barry O'Brien
  • Patent number: 8057534
    Abstract: A bioerodible endoprosthesis erodes to a desirable geometry that can provide, e.g., improved mechanical properties or degradation characteristics.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: November 15, 2011
    Assignee: Boston Scientific SciMed, Inc.
    Inventors: Dennis A. Boismier, Timothy S. Girton, Steven R. Larsen, Matt Shedlov, Ken Merdan, Barry O'Brien
  • Publication number: 20110238151
    Abstract: An endoprosthesis includes an expandable tubular body defined by a plurality of struts. In some embodiments, the expandable tubular body includes a bioerodible metal that has at least a first surface region and a second surface region. The first and second surface regions can have different surface oxide compositions. In some embodiments, the first portion has a thermally altered microstructure and the second portion has a wrought microstructure. The thermally altered microstructure can be a cast microstructure comprising dendritic grains. The first portion forms at least a portion of an outer surface of the expandable tubular body. In some embodiments, the expandable tubular body includes iron or a bioerodible iron alloy and at least one surface of the expandable tubular body includes a substantially uniform coating of iron(III) oxide.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 29, 2011
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: Torsten Scheuermann, Jan Weber, Charles Deng, Jonathan S. Stinson, Steven R. Larsen, Dennis A. Boismier, Jacob D. Edick
  • Publication number: 20100145436
    Abstract: Endoprostheses such as stents are disclosed that are, or that include portions that are, bioerodible.
    Type: Application
    Filed: February 17, 2010
    Publication date: June 10, 2010
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: Jan Weber, Liliana Atanasoska, Steven R. Larsen, Steven P. Mertens
  • Publication number: 20080071358
    Abstract: Endoprostheses such as stents are disclosed that are, or that include portions that are, bioerodible.
    Type: Application
    Filed: September 13, 2007
    Publication date: March 20, 2008
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Jan Weber, Liliana Atanasoska, Steven R. Larsen, Steven P. Mertens
  • Publication number: 20080071349
    Abstract: Medical devices are described that include a device body that carries a first bioerodible member and a second bioerodible member. One of the first or second members includes a bioerodible metallic material or ceramic, and the other includes a bioerodible polymeric material. The first and/or second member can include a therapeutic agent such as paclitaxel.
    Type: Application
    Filed: September 13, 2007
    Publication date: March 20, 2008
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Liliana Atanasoska, Jan Weber, Steven R. Larsen, Robert W. Warner
  • Patent number: 6423451
    Abstract: A sealed lead-acid cell and positive plate for a sealed lead-acid cell are provided. The positive plate comprises a grid supporting structure having a layer of active material pasted thereto, the grid supporting structure comprising a lead-based alloy consisting essentially of lead, from about 0.02% to about 0.05% calcium, from about 1.5% to about 3.0% tin, and from about 0.01% to about 0.05% silver. A positive plate in accordance with the invention has excellent mechanical properties, and is satisfactory for use in a lead-acid cell.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: July 23, 2002
    Assignee: GNB Technologies, Inc.
    Inventor: Steven R. Larsen
  • Patent number: 5948566
    Abstract: The use of a continuous process for making a directly cast strip to provide a thickness satisfactory for industrial cells and batteries for stationary and motive power applications is disclosed, the thickness of the strip being at least 0.060 inch, and the process providing a visually crack-free surface in the transverse direction of the directly cast strip, the strip being lead or a lead-based alloy, such as, for example, calcium-tin-silver.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: September 7, 1999
    Assignee: GNB Technologies, Inc.
    Inventors: Steven R. Larsen, Andrew Foote
  • Patent number: 5709967
    Abstract: Disclosed are curable sealant compositions for coating a conductive bushing for a lead-acid cell or battery having positive and negative plates disposed within a container and a cover, the conductive bushing being molded into the cover and providing electrical communication with at least one of the plates, the bushing presenting an interface with the exterior of the bushing and the cover. The sealant compositions comprise a sealing elastomer in an amount from about 1% to about 15% by weight and a solvent in an amount of up to about 99% by weight. In accordance with the invention, the sealant composition is a terpene solvent, preferably a cyclic terpene and more preferably D-limonene. The sealant compositions preferably further comprise a reinforcing agent in an amount of about 1% to about 15% by weight. In use, at least a portion of a bushing is coated with the sealant composition, and the sealant composition is cured.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: January 20, 1998
    Assignee: GNB Technologies, Inc.
    Inventor: Steven R. Larsen
  • Patent number: 5650242
    Abstract: Automotive SLI lead-acid batteries are disclosed which are characterized by enhanced resistance to intercell connection corrosion, even when exposed to the relatively high under-the-hood service temperatures in use with recent model automobiles. The straps are formed from a lead-based alloy including from about 2.0 to 2.6% or so antimony, from about 0.04 to 0.07% tin, from about 0.04 to about 0.07% arsenic, and from about 0.012 to about 0.030% selenium, the percentages being based upon the weight of the alloy.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: July 22, 1997
    Assignee: GNB Technologies, Inc.
    Inventors: Purushothama Rao, Steven R. Larsen
  • Patent number: 5434025
    Abstract: A continuous method for making starting, lighting and ignition lead-acid battery positive plates and the resulting battery is disclosed which utilizes a direct cast alloy strip wherein the alloy consists essentially of lead, from about 0.02 to 0.05% calcium, from about 0.3 to about 0.5% tin, and from about 0.02 to 0.05% silver, the percentages being based upon the weight of the alloy strip, as well as related alloys utilizing calcium and strontium or strontium in place of calcium.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: July 18, 1995
    Assignee: GNB Battery Technologies Inc.
    Inventors: Purushothama Rao, Thomas F. Uhlemann, John Larson, Steven R. Larsen
  • Patent number: 5169734
    Abstract: Automotive SLI lead-acid batteries are disclosed which are characterized by enhanced resistance to intercell connection corrosion, even when exposed to the current, relatively high under-the-hood service temperatures in use with recent model automobiles. The straps are formed from a lead-based alloy including from about 3.0 to 3.3% antimony, from about 0.04 to 0.07% tin, from about 0.04 to 0.07% arsenic and from about 0.014 to 0.020% selenium, the percentages being based upon the weight of the alloy.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: December 8, 1992
    Assignee: GNB Incorporated
    Inventors: Purushothama Rao, Steven R. Larsen