Patents by Inventor David Matsuura
David Matsuura 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: 11602362Abstract: A reentry catheter for crossing a vascular occlusion includes an elongate flexible tubular body, having a proximal end, a distal end and at least one lumen extending there through. A reentry zone on the tubular body includes at least two and preferably three sets of opposing pairs of axially spaced exit apertures in communication with the lumen. The apertures are rotationally offset from each other and aligned in a spiral pattern around the tubular body. A method of crossing a chronic total occlusion includes the steps of advancing the reentry catheter across the occlusion via a channel formed in the subintimal space, and advancing a guidewire via a selected exit port into the native lumen distally of the occlusion. The catheter may be removed, leaving the guidewire across the occlusion to guide further interventional devices.Type: GrantFiled: March 29, 2022Date of Patent: March 14, 2023Assignee: Traverse Vascular, Inc.Inventors: Bill Nicholson, Brad Klos, Steve Howard, David Matsuura
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Publication number: 20220211397Abstract: A reentry catheter for crossing a vascular occlusion includes an elongate flexible tubular body, having a proximal end, a distal end and at least one lumen extending there through. A reentry zone on the tubular body includes at least two and preferably three sets of opposing pairs of axially spaced exit apertures in communication with the lumen. The apertures are rotationally offset from each other and aligned in a spiral pattern around the tubular body. A method of crossing a chronic total occlusion includes the steps of advancing the reentry catheter across the occlusion via a channel formed in the subintimal space, and advancing a guidewire via a selected exit port into the native lumen distally of the occlusion. The catheter may be removed, leaving the guidewire across the occlusion to guide further interventional devices.Type: ApplicationFiled: March 29, 2022Publication date: July 7, 2022Inventors: Bill Nicholson, Brad Klos, Steve Howard, David Matsuura
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Patent number: 11369392Abstract: Intravascular catheters with fluoroscopically visible indicium of rotational orientation. The catheter includes an elongate flexible tubular body, having a proximal end, a distal end and a tubular side wall defining at least one lumen extending therethrough. At least first and second opposing pairs of radiopaque rings are embedded in the side wall, spaced axially apart from each other. A first transverse axis extending through the first pair of rings is rotationally offset from a second transverse axis extending through the second pair of rings. The rings may be supported by a subassembly integrated into the wall of the catheter. The subassembly may include a tubular body having a plurality of aperture portions connected by intervening hinge portions. In one implementation, the catheter is a reentry catheter.Type: GrantFiled: April 2, 2020Date of Patent: June 28, 2022Assignee: TRAVERSE VASCULAR, INC.Inventors: Bill Nicholson, Brad Klos, Steve Howard, David Matsuura
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Publication number: 20220110645Abstract: A reentry catheter for crossing a vascular occlusion includes an elongate flexible tubular body, having a proximal end, a distal end and at least one lumen extending there through. A reentry zone on the tubular body includes at least two and preferably three sets of opposing pairs of axially spaced exit apertures in communication with the lumen. The apertures are rotationally offset from each other and aligned in a spiral pattern around the tubular body. Each aperture may be defined within a radiopaque reinforcing ring embedded within the tubular body. A first set of opposing pairs of reinforcing rings may be separated axially from a second set of opposing pairs of reinforcing rings and may be connected by a flexible hinge section.Type: ApplicationFiled: October 25, 2021Publication date: April 14, 2022Inventors: Bill Nicholson, Brad Klos, Steve Howard, David Matsuura
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Patent number: 11154312Abstract: A reentry catheter for crossing a vascular occlusion includes an elongate flexible tubular body, having a proximal end, a distal end and at least one lumen extending there through. A reentry zone on the tubular body includes at least two and preferably three sets of opposing pairs of axially spaced exit apertures in communication with the lumen. The apertures are rotationally offset from each other and aligned in a spiral pattern around the tubular body. Each aperture may be defined within a radiopaque reinforcing ring embedded within the tubular body. A first set of opposing pairs of reinforcing rings may be separated axially from a second set of opposing pairs of reinforcing rings and may be connected by a flexible hinge section.Type: GrantFiled: April 2, 2020Date of Patent: October 26, 2021Assignee: TRAVERSE VASCULAR, INC.Inventors: Bill Nicholson, Brad Klos, Steve Howard, David Matsuura
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Publication number: 20200330731Abstract: Intravascular catheters with fluoroscopically visible indicium of rotational orientation are described. The catheter includes an elongate flexible tubular body, having a proximal end, a distal end and a tubular side wall defining at least one lumen extending there through. At least first and second opposing pairs of radiopaque rings are embedded in the side wall, spaced axially apart from each other. A first transverse axis extending through the first pair of rings is rotationally offset from a second transverse axis extending through the second pair of rings. The rings may be supported by a subassembly integrated into the wall of the catheter. The subassembly may include a tubular body having a plurality of aperture portions connected by intervening hinge portions. In one implementation, the catheter is a reentry catheter.Type: ApplicationFiled: April 2, 2020Publication date: October 22, 2020Inventors: Bill Nicholson, Brad Klos, Steve Howard, David Matsuura
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Publication number: 20200330111Abstract: A reentry catheter for crossing a vascular occlusion includes an elongate flexible tubular body, having a proximal end, a distal end and at least one lumen extending there through. A reentry zone on the tubular body includes at least two and preferably three sets of opposing pairs of axially spaced exit apertures in communication with the lumen. The apertures are rotationally offset from each other and aligned in a spiral pattern around the tubular body. Each aperture may be defined within a radiopaque reinforcing ring embedded within the tubular body. A first set of opposing pairs of reinforcing rings may be separated axially from a second set of opposing pairs of reinforcing rings and may be connected by a flexible hinge section.Type: ApplicationFiled: April 2, 2020Publication date: October 22, 2020Inventors: Bill Nicholson, Brad Klos, Steve Howard, David Matsuura
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Publication number: 20200315639Abstract: A reentry catheter for crossing a vascular occlusion includes an elongate flexible tubular body, having a proximal end, a distal end and at least one lumen extending there through. A reentry zone on the tubular body includes at least two and preferably three sets of opposing pairs of axially spaced exit apertures in communication with the lumen. The apertures are rotationally offset from each other and aligned in a spiral pattern around the tubular body. A method of crossing a chronic total occlusion includes the steps of advancing the reentry catheter across the occlusion via a channel formed in the subintimal space, and advancing a guidewire via a selected exit port into the native lumen distally of the occlusion. The catheter may be removed, leaving the guidewire across the occlusion to guide further interventional devices.Type: ApplicationFiled: April 2, 2020Publication date: October 8, 2020Inventors: Bill Nicholson, Brad Klos, Steve Howard, David Matsuura
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Publication number: 20200305780Abstract: A fluid sample optimization device for optimizing a fluid sample includes an inlet, an outlet, a sample path connected between the inlet and the outlet, and a contaminant containment reservoir connected between the inlet and the outlet. The contaminant containment reservoir includes an air permeable fluid resistor proximate the outlet, and is arranged to receive, when a pressure differential is applied between the inlet and the outlet, a first portion of the fluid sample to displace air therein through the air permeable fluid resistor and the outlet, such that upon receipt of the first portion of the fluid sample and containment of the contaminants in the contaminant containment reservoir, subsequent portions of the fluid sample can be conveyed by the sample path from the inlet to the outlet when subsequent pressure differentials are applied between the inlet and the outlet.Type: ApplicationFiled: April 1, 2020Publication date: October 1, 2020Inventors: Bobby E. ROGERS, Kevin NASON, David Karl STROUP, David MATSUURA, Belinko MATSUURA
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Patent number: 10688282Abstract: A medical device delivery system can be used to advance a medical device to a target area within a patient's vasculature. The system can comprise a catheter, a support sheath, and a core member coupled to a medical device. The core member can be used to longitudinally advanced or retracting medical device within a lumen of the support sheath. The support sheath can be advanced within the catheter until a distal end of the support sheath contacts or abuts a reduced diameter section of the catheter lumen. Thereafter, the core member can be advanced into the catheter lumen toward the target area.Type: GrantFiled: September 23, 2016Date of Patent: June 23, 2020Assignee: COVIDIEN LPInventors: Stephen Sosnowski, David Matsuura, Philip Simpson, Belinko Matsuura, Jeffrey Loos
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Patent number: 9889000Abstract: Devices and methods for handling and depositing corneal implants onto corneal tissue. Devices and methods for packaging and storing corneal implants.Type: GrantFiled: January 21, 2014Date of Patent: February 13, 2018Assignee: ReVision Optics, Inc.Inventors: Alok Nigam, Gregg Edmond Plambeck, Ned Schneider, Adam Ariely, David Matsuura, Philip Simpson
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Publication number: 20170106168Abstract: A medical device delivery system can be used to advance a medical device to a target area within a patient's vasculature. The system can comprise a catheter, a support sheath, and a core member coupled to a medical device. The core member can be used to longitudinally advanced or retracting medical device within a lumen of the support sheath. The support sheath can be advanced within the catheter until a distal end of the support sheath contacts or abuts a reduced diameter section of the catheter lumen. Thereafter, the core member can be advanced into the catheter lumen toward the target area.Type: ApplicationFiled: September 23, 2016Publication date: April 20, 2017Inventors: Stephen Sosnowski, David Matsuura, Philip Simpson, Belinko Matsuura, Jeffrey Loos
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Patent number: 9345569Abstract: Devices and methods for handling and depositing corneal implants onto corneal tissue. Devices and methods for packaging and storing corneal implants.Type: GrantFiled: October 22, 2012Date of Patent: May 24, 2016Assignee: REVISION OPTICS, INC.Inventors: Gregg Edmond Plambeck, Ned Schneider, Adam Ariely, David Matsuura, Philip Simpson
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Patent number: 8903626Abstract: A method is provided for adjusting a fuel composition estimate. The method generally uses a non-fuel related property to determine fuel composition. In some cases the method can be used after refueling and when the engine is operating without the benefit of oxygen sensor data, which can include evaluating data not based on characteristics of the fuel or exhaust from its combustion, such as engine torque variations while using the fuel. The method can include monitoring estimated engine torque to determine whether first variations in engine torque exceed a threshold, and, if so, modifying the previous estimate of fuel composition prior to the refueling event by a pre-determined amount.Type: GrantFiled: June 24, 2011Date of Patent: December 2, 2014Assignee: Honda Motor Co., Ltd.Inventors: Kenji David Matsuura, Michael Neisen
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Publication number: 20140257477Abstract: Devices and methods for handling and depositing corneal implants onto corneal tissue. Devices and methods for packaging and storing corneal implants.Type: ApplicationFiled: October 22, 2012Publication date: September 11, 2014Inventors: Gregg Edmond Plambeck, Ned Schneider, Adam Ariely, David Matsuura, Philip Simpson
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Patent number: 8789409Abstract: A method of controlling fuel composition learning includes steps of monitoring changes in airflow within an engine to determine steady state conditions. The method further includes steps of initiating a fuel composition learning process during steady state conditions. A current fuel component concentration factor is updated using a temporary fuel component concentration factor. The temporary fuel component concentration factor is calculated as the average of an air/fuel correction factor. Once the current fuel component concentration factor is updated, the temporary fuel component concentration factor is reset. The air/fuel correction factor is reset to reflect any difference that existed between the temporary fuel component concentration factor and the air/fuel correction factor at the update time.Type: GrantFiled: April 11, 2013Date of Patent: July 29, 2014Assignee: Honda Motor Co., Ltd.Inventors: Kenji David Matsuura, Todd Robert Luken, Hirokazu Toyoshima
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Publication number: 20140135915Abstract: Devices and methods for handling and depositing corneal implants onto corneal tissue. Devices and methods for packaging and storing corneal implants.Type: ApplicationFiled: January 21, 2014Publication date: May 15, 2014Inventors: Alok Nigam, Gregg Edmond Plambeck, Ned Schneider, Adam Ariely, David Matsuura, Philip Simpson
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Patent number: 8668735Abstract: Devices and methods for handling and depositing corneal implants onto corneal tissue. Devices and methods for packaging and storing corneal implants.Type: GrantFiled: October 22, 2012Date of Patent: March 11, 2014Assignee: ReVision Optics, Inc.Inventors: Alok Nigam, Gregg Edmond Plambeck, Ned Schneider, Adam Ariely, David Matsuura, Philip Simpson
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Publication number: 20140044149Abstract: Ambient temperature is determined using a vehicle-implemented system based on an estimated ambient temperature determined in view of a radiator fluid temperature profile. During periods of radiator fan operation, radiator fluid temperature is measured and logged to create the radiator fluid temperature profile. A best-fit polynomial is fitted to the radiator fluid temperature profile, and a coefficient from the best-fit polynomial is used to reference a best-fit equation to ambient temperature relation. The relation is predetermined for the particular vehicle configuration, and the ambient temperature is estimated based on the coefficient from the fitted best-fit polynomial.Type: ApplicationFiled: August 10, 2012Publication date: February 13, 2014Applicant: HONDA MOTOR CO., LTD.Inventor: Kenji David Matsuura
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Patent number: 8443655Abstract: A method of controlling fuel composition learning includes steps of monitoring changes in airflow within an engine to determine steady state conditions. The method further includes steps of initiating a fuel composition learning process during steady state conditions. A current fuel component concentration factor is updated using a temporary fuel component concentration factor. The temporary fuel component concentration factor is calculated as the average of an air/fuel correction factor. Once the current fuel component concentration factor is updated, the temporary fuel component concentration factor is reset. The air/fuel correction factor is reset to reflect any difference that existed between the temporary fuel component concentration factor and the air/fuel correction factor at the update time.Type: GrantFiled: September 6, 2011Date of Patent: May 21, 2013Assignee: Honda Motor Co., Ltd.Inventors: Kenji David Matsuura, Todd Robert Luken, Hirokazu Toyoshima