Patents by Inventor Steven Walak
Steven Walak 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).
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Patent number: 10758291Abstract: Cryogenic tissue ablation instruments for treating body tissue include an elongate flexible body with a proximal supply port for coupling with a pressurized coolant (e.g., liquid N2O), a supply lumen in fluid communication with the proximal supply port, and an expandable cryogenic balloon carried on a distal portion of the elongate body, the balloon having a wall defining an interior of the balloon.Type: GrantFiled: November 16, 2015Date of Patent: September 1, 2020Assignee: Boston Scientific Scimed, Inc.Inventors: Michael Fourkas, Steven Walak, Kurt Geitz, Kristine Tatsutani
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Patent number: 9795432Abstract: Cryogenic tissue ablation instruments for treating body tissue include an elongate flexible body with a proximal supply port for coupling with a pressurized coolant (e.g., liquid N2O), a supply lumen in fluid communication with the proximal supply port, and an expandable cryogenic balloon carried on a distal portion of the elongate body, the balloon having a wall defining an interior of the balloon.Type: GrantFiled: March 4, 2014Date of Patent: October 24, 2017Assignee: Boston Scientific Scimed, Inc.Inventors: Michael Fourkas, Steven Walak, Kurt Geitz, Kristine Tatsutani
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Publication number: 20160066975Abstract: Cryogenic tissue ablation instruments for treating body tissue include an elongate flexible body with a proximal supply port for coupling with a pressurized coolant (e.g., liquid N2O), a supply lumen in fluid communication with the proximal supply port, and an expandable cryogenic balloon carried on a distal portion of the elongate body, the balloon having a wall defining an interior of the balloon.Type: ApplicationFiled: November 16, 2015Publication date: March 10, 2016Applicant: Boston Scientific Scimed, Inc.Inventors: Michael Fourkas, Steven Walak, Kurt Geitz, Kristine Tatsutani
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Publication number: 20140207130Abstract: Cryogenic tissue ablation instruments for treating body tissue include an elongate flexible body with a proximal supply port for coupling with a pressurized coolant (e.g., liquid N2O), a supply lumen in fluid communication with the proximal supply port, and an expandable cryogenic balloon carried on a distal portion of the elongate body, the balloon having a wall defining an interior of the balloon.Type: ApplicationFiled: March 4, 2014Publication date: July 24, 2014Applicant: Boston Scientific Scimed, Inc.Inventors: Michael Fourkas, Steven Walak, Kurt Geitz, Kristine Tatsutani
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Patent number: 8663211Abstract: A cryogenic tissue ablation instrument includes an elongate flexible body with a proximal supply port for coupling with a pressurized coolant, a supply lumen in communication with the proximal supply port, and an expandable balloon carried on the elongate body. A dispersion member coupled to the elongate body has an interior lumen in communication with the supply lumen, the dispersion member having one or more coolant dispersion apertures sized and located such that a pressurized flowable coolant will enter the balloon interior in the form of a liquid spray that contacts and provides substantially uniform cooling of the balloon.Type: GrantFiled: July 30, 2012Date of Patent: March 4, 2014Assignee: Boston Scientific Scimed, Inc.Inventors: Michael Fourkas, Steven Walak, Kurt Geitz, Kristine Tatsutani
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Publication number: 20120310226Abstract: A cryogenic tissue ablation instrument includes an elongate flexible body with a proximal supply port for coupling with a pressurized coolant, a supply lumen in communication with the proximal supply port, and an expandable balloon carried on the elongate body. A dispersion member coupled to the elongate body has an interior lumen in communication with the supply lumen, the dispersion member having one or more coolant dispersion apertures sized and located such that a pressurized flowable coolant will enter the balloon interior in the form of a liquid spray that contacts and provides substantially uniform cooling of the balloon.Type: ApplicationFiled: July 30, 2012Publication date: December 6, 2012Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Michael Fourkas, Steven Walak, Kurt Geitz, Kristine Tatsutani
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Patent number: 7967856Abstract: A medical implant that delivers therapeutic via microtubes and a method of making the same is provided. In one embodiment a biologically implantable structure adapted to fit within the body of a patient is provided. This structure may have a plurality of individual microtubes in physical communication with its outer surface, the microtubes containing or carrying a therapeutic. In another embodiment a method of manufacturing an implantable medical appliance is provided. This method includes placing a pliant stratum of microtubes onto a biologically implantable medical structure and then applying a therapeutic to the pliant stratum to cover or fill the microtubes.Type: GrantFiled: December 18, 2006Date of Patent: June 28, 2011Assignee: Boston Scientific Scimed, Inc.Inventor: Steven Walak
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Patent number: 7962223Abstract: Tissue ablation probes and methods for treating tissue are provided. The tissue ablation probe comprises an elongated probe shaft, at least one electrode carried by the distal end of the probe shaft, and a pharmaceutical agent carried by the probe shaft. The pharmaceutical agent may be disposed on the electrode(s), the probe shaft, or a releasable portion associated with the electrode or the probe shaft. A method for treating tissue comprises introducing a tissue ablation probe to a tissue site, operating the tissue ablation probe to ablate tissue at the tissue site, and releasing a pharmaceutical agent from the tissue ablation probe at the tissue site.Type: GrantFiled: November 14, 2008Date of Patent: June 14, 2011Assignee: Boston Scientific Scimed, Inc.Inventors: Kimbolt Young, Steven Walak, Paul DiCarlo
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Publication number: 20090182303Abstract: A method for treating obesity comprises anchoring at a first target site within a body a first therapeutic agent delivery device including a first therapeutic agent reservoir coupled to a first outlet which, when the first device is anchored at the first target site, is positioned adjacent to a first target treatment location within a GI tract of a patient and releasing a first therapeutic agent from the first reservoir via the first outlet.Type: ApplicationFiled: December 18, 2008Publication date: July 16, 2009Inventors: Steven Walak, Michael Madden, Paul Smith
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Publication number: 20090131855Abstract: Tissue ablation probes and methods for treating tissue are provided. The tissue ablation probe comprises an elongated probe shaft, at least one electrode carried by the distal end of the probe shaft, and a pharmaceutical agent carried by the probe shaft. The pharmaceutical agent may be disposed on the electrode(s), the probe shaft, or a releasable portion associated with the electrode or the probe shaft. A method for treating tissue comprises introducing a tissue ablation probe to a tissue site, operating the tissue ablation probe to ablate tissue at the tissue site, and releasing a pharmaceutical agent from the tissue ablation probe at the tissue site.Type: ApplicationFiled: November 14, 2008Publication date: May 21, 2009Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Kimbolt Young, Steven Walak, Paul DiCarlo
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Publication number: 20080312644Abstract: Cryogenic tissue ablation instruments for treating body tissue include an elongate flexible body with a proximal supply port for coupling with a pressurized coolant (e.g., liquid N2O), a supply lumen in fluid communication with the proximal supply port, and an expandable cryogenic balloon carried on a distal portion of the elongate body, the balloon having a wall defining an interior of the balloon.Type: ApplicationFiled: June 14, 2007Publication date: December 18, 2008Applicant: Boston Scientific Scimed, Inc.Inventors: Michael Fourkas, Steven Walak, Kurt Geitz, Kristine Tatsutani
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Patent number: 7399311Abstract: A medical device system includes a catheter, an expandable prosthesis over the catheter, and a holding material between the catheter and the prosthesis. The holding material initially holds the prosthesis over the catheter.Type: GrantFiled: August 5, 2002Date of Patent: July 15, 2008Assignee: Boston Scientific Scimed, Inc.Inventors: William Bertolino, Andrew J. Campbell, Steven Walak
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Publication number: 20070200656Abstract: A two-way actuated shape memory composite material is provided. The composite material includes a shape memory alloy and an elastic metal. The composite material takes a first shape at a lower temperature and a second shape at a higher temperature. At the higher temperature, the shape memory alloy has a “remembered” shape, causing the composite material to take the second shape. The elastic material provides the composite material with elastic properties which cause the composite material to return to the first shape when cooled to the lower temperature.Type: ApplicationFiled: May 1, 2007Publication date: August 30, 2007Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventor: Steven Walak
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Publication number: 20070100448Abstract: A medical implant that delivers therapeutic via microtubes and a method of making the same is provided. In one embodiment a biologically implantable structure adapted to fit within the body of a patient is provided. This structure may have a plurality of individual microtubes in physical communication with its outer surface, the microtubes containing or carrying a therapeutic. In another embodiment a method of manufacturing an implantable medical appliance is provided. This method includes placing a pliant stratum of microtubes onto a biologically implantable medical structure and then applying a therapeutic to the pliant stratum to cover or fill the microtubes.Type: ApplicationFiled: December 18, 2006Publication date: May 3, 2007Inventor: Steven Walak
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Patent number: 7168605Abstract: A medical implant that delivers therapeutic via microtubes and a method of making the same is provided. In one embodiment a biologically implantable structure adapted to fit within the body of a patient is provided. This structure may have a plurality of individual microtubes in physical communication with its outer surface, the microtubes containing or carrying a therapeutic. In an alternative embodiment a method of manufacturing an implantable medical appliance is provided. This method includes placing a pliant stratum of microtubes onto a biologically implantable medical structure and then applying a therapeutic to the pliant stratum to cover or fill the microtubes.Type: GrantFiled: September 18, 2001Date of Patent: January 30, 2007Assignee: Boston Scientific Scimed, Inc.Inventor: Steven Walak
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Publication number: 20060153729Abstract: Medical devices, such as stents, and methods of making the devices are disclosed. In some embodiments, a medical device includes an alloy having tantalum, tungsten, zirconium and niobium. For example, the alloy can include from about 20% to about 40% by weight of tantalum, from about 0.5% to about 9% by weight of tungsten, and from about 0.5% to about 10% by weight of zirconium.Type: ApplicationFiled: January 13, 2005Publication date: July 13, 2006Inventors: Jonathan Stinson, Barry O'Brien, Steven Walak
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Publication number: 20060149364Abstract: The low profile vascular graft of the present invention includes a tube structure having outer and inner surfaces, and a support structure having a chamber structure secured to the outer or inner surface. The support structure includes a core structure contained within the chamber structure. The core structure is transformable from a conformance condition to a reinforcement condition. When the core structure is in the conformance condition, it provides insubstantial resistance to deformation of the tube structure. When the core structure is in the reinforcement condition, it provides substantial resistance to deformation of the tube structure.Type: ApplicationFiled: December 31, 2004Publication date: July 6, 2006Inventors: Steven Walak, John Sherry
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Publication number: 20060100693Abstract: Medical devices may be made of shape-memory materials portions of which have been heat treated to exhibit spatial variations in the stiffness of the material. Devices including stents, vena cava filters and guidewires may be constructed from such materials. Devices may also be made from shape-memory materials which have been locally heat treated such that the superelasticity of the treated portion is destroyed while the remainder of the shape-memory material can transition between the martensitic and austenitic states.Type: ApplicationFiled: December 20, 2005Publication date: May 11, 2006Inventors: Steven Walak, Paul DiCarlo
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Publication number: 20050165301Abstract: Medical devices that are visible by magnetic resonance imaging (MRI), and optionally, other imaging techniques, are described. In some embodiments, a medical device adapted for insertion into the body includes an elongated shaft and an electrically conductive path extending spirally about a portion of the shaft. The conductive path is capable of being connected to a current source. The medical device can further include one or more contrast agents (such as MRI contrast agents, radiopaque materials, and/or ultrasound visible materials), which can be arranged in a predetermined manner.Type: ApplicationFiled: January 23, 2004Publication date: July 28, 2005Inventors: Scott Smith, Steven Walak, Lixiao Wang, Jan Weber, Sheng-Ping Zhong
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Publication number: 20050131522Abstract: Medical devices, such as stents, and methods of making the devices are disclosed. In some embodiments, the devices are made using a laser forming process.Type: ApplicationFiled: December 10, 2003Publication date: June 16, 2005Inventors: Jonathan Stinson, Gary Campbell, Steven Walak