Patents by Inventor Stewart M. Kume
Stewart M. Kume 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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Publication number: 20190125512Abstract: Methods, devices, and systems establish and facilitate retrograde or reverse flow blood circulation in the region of the carotid artery bifurcation in order to limit or prevent the release of emboli into the cerebral vasculature such as into the internal carotid artery. The methods are particularly useful for interventional procedures, such as stenting and angioplasty, atherectomy performed through a transcarotid approach or transfemoral into the common carotid artery, either using an open surgical technique or using a percutaneous technique, such as a modified Seldinger technique or a micropuncture technique.Type: ApplicationFiled: October 26, 2018Publication date: May 2, 2019Inventors: Sumaira MacDonald, Stewart M. Kume
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Patent number: 10238853Abstract: Devices and methods establish and facilitate retrograde or reverse flow blood circulation in the region of the carotid artery bifurcation in order to limit or prevent the release of emboli into the cerebral vasculature such as into the internal carotid artery. The methods are particularly useful for interventional procedures performed through a transcarotid approach or transfemoral into the common carotid artery.Type: GrantFiled: April 7, 2016Date of Patent: March 26, 2019Assignee: Silk Road Medical, Inc.Inventors: Stewart M. Kume, Sieu T. Duong, Michi E. Garrison
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Patent number: 10039906Abstract: Disclosed is an arterial access sheath for introducing an interventional device into an artery. The arterial access sheath includes an elongated body sized and shaped to be transcervically introduced into a common carotid artery at an access location in the neck and an internal lumen in the elongated body having a proximal opening in a proximal region of the elongated body and a distal opening in a distal region of the elongated body. The internal lumen provides a passageway for introducing an interventional device into the common carotid artery when the elongated body is positioned in the common carotid artery. The elongated body has a proximal section and a distalmost section that is more flexible than the proximal section. A ratio of an entire length of the distalmost section to an overall length of the sheath body is one tenth to one half the overall length of the sheath body.Type: GrantFiled: May 26, 2017Date of Patent: August 7, 2018Assignee: Silk Road Medical, Inc.Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
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Publication number: 20180206830Abstract: Disclosed is an adjustable occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device is removably carried by a deployment catheter. The device may be enlarged or reduced to facilitate optimal placement or removal. Methods are also disclosed.Type: ApplicationFiled: March 21, 2018Publication date: July 26, 2018Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Alexander K. Khairkhahan, Andrew G.C. Frazier, Alan R. Klenk, Marc S. Kreidler, Stewart M. Kume, Darrell H. Ogi, Chad C. Roue, Erik J. van der Burg, Dino DeCicco, Michael D. Lesh
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Patent number: 9943299Abstract: Disclosed is an adjustable occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device is removably carried by a deployment catheter. The device may be enlarged or reduced to facilitate optimal placement or removal. Methods are also disclosed.Type: GrantFiled: January 24, 2014Date of Patent: April 17, 2018Assignee: Atritech, Inc.Inventors: Alexander K. Khairkhahan, Andrew G. C. Frazier, Alan R. Klenk, Marc S. Kreidler, Stewart M. Kume, Darrell H. Ogi, Chad C. Roue, Erik J. van der Burg, Dino DeCicco, Michael D. Lesh
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Publication number: 20170354803Abstract: Disclosed is an arterial access sheath for introducing an interventional device into an artery. The arterial access sheath includes an elongated body sized and shaped to be transcervically introduced into a common carotid artery at an access location in the neck and an internal lumen in the elongated body having a proximal opening in a proximal region of the elongated body and a distal opening in a distal region of the elongated body. The internal lumen provides a passageway for introducing an interventional device into the common carotid artery when the elongated body is positioned in the common carotid artery. The elongated body has a proximal section and a distalmost section that is more flexible than the proximal section. A ratio of an entire length of the distalmost section to an overall length of the sheath body is one tenth to one half the overall length of the sheath body.Type: ApplicationFiled: May 26, 2017Publication date: December 14, 2017Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
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Publication number: 20170296798Abstract: A micropuncture kit for direct access of a surgically exposed vessel using direct visual guidance includes a micropuncture access needle having a proximal hub coupled to an elongate shaft defining an inner lumen and a visible depth indicator positioned on the elongate shaft a distance away from a distal tip of the elongate shaft. The kit includes an access guidewire sized to be received through the inner lumen of the micropuncture access needle and a microaccess cannula having an elongate body defining an inner lumen and a plurality of visible depth indicators formed on the elongate body. The guidewire includes a distal tip and at least one visible depth indicator positioned on the access guidewire a distance away from the distal tip of the guidewire. Each of the plurality of visible depth indicators identifies a distance from a distal tip of the cannula. Related systems, devices and methods are provided.Type: ApplicationFiled: July 5, 2017Publication date: October 19, 2017Inventors: Stewart M. Kume, Michael Chang, Michael P. Wallace
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Patent number: 9662480Abstract: Disclosed is an arterial access sheath for introducing an interventional device into an artery. The arterial access sheath includes an elongated body sized and shaped to be transcervically introduced into a common carotid artery at an access location in the neck and an internal lumen in the elongated body having a proximal opening in a proximal region of the elongated body and a distal opening in a distal region of the elongated body. The internal lumen provides a passageway for introducing an interventional device into the common carotid artery when the elongated body is positioned in the common carotid artery. The elongated body has a proximal section and a distalmost section that is more flexible than the proximal section. A ratio of an entire length of the distalmost section to an overall length of the sheath body is one tenth to one half the overall length of the sheath body.Type: GrantFiled: July 14, 2016Date of Patent: May 30, 2017Assignee: Silk Road Medical, Inc.Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
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Publication number: 20170043141Abstract: Disclosed is an arterial access sheath for introducing an interventional device into an artery. The arterial access sheath includes an elongated body sized and shaped to be transcervically introduced into a common carotid artery at an access location in the neck and an internal lumen in the elongated body having a proximal opening in a proximal region of the elongated body and a distal opening in a distal region of the elongated body. The internal lumen provides a passageway for introducing an interventional device into the common carotid artery when the elongated body is positioned in the common carotid artery. The elongated body has a proximal section and a distalmost section that is more flexible than the proximal section. A ratio of an entire length of the distalmost section to an overall length of the sheath body is one tenth to one half the overall length of the sheath body.Type: ApplicationFiled: July 14, 2016Publication date: February 16, 2017Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
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Publication number: 20160296690Abstract: Devices and methods establish and facilitate retrograde or reverse flow blood circulation in the region of the carotid artery bifurcation in order to limit or prevent the release of emboli into the cerebral vasculature such as into the internal carotid artery. The methods are particularly useful for interventional procedures performed through a transcarotid approach or transfemoral into the common carotid artery.Type: ApplicationFiled: April 7, 2016Publication date: October 13, 2016Inventors: Stewart M. Kume, Sieu T. Duong, Michi E. Garrison
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Patent number: 9399118Abstract: Disclosed is an arterial access sheath for introducing an interventional device into an artery. The arterial access sheath includes an elongated body sized and shaped to be transcervically introduced into a common carotid artery at an access location in the neck and an internal lumen in the elongated body having a proximal opening in a proximal region of the elongated body and a distal opening in a distal region of the elongated body. The internal lumen provides a passageway for introducing an interventional device into the common carotid artery when the elongated body is positioned in the common carotid artery. The elongated body has a proximal section and a distalmost section that is more flexible than the proximal section. A ratio of an entire length of the distalmost section to an overall length of the sheath body is one tenth to one half the overall length of the sheath body.Type: GrantFiled: January 25, 2016Date of Patent: July 26, 2016Assignee: Silk Road Medical, Inc.Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
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Publication number: 20160158502Abstract: Disclosed is an arterial access sheath for introducing an interventional device into an artery. The arterial access sheath includes an elongated body sized and shaped to be transcervically introduced into a common carotid artery at an access location in the neck and an internal lumen in the elongated body having a proximal opening in a proximal region of the elongated body and a distal opening in a distal region of the elongated body. The internal lumen provides a passageway for introducing an interventional device into the common carotid artery when the elongated body is positioned in the common carotid artery. The elongated body has a proximal section and a distalmost section that is more flexible than the proximal section. A ratio of an entire length of the distalmost section to an overall length of the sheath body is one tenth to one half the overall length of the sheath body.Type: ApplicationFiled: January 25, 2016Publication date: June 9, 2016Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
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Patent number: 9241699Abstract: Disclosed is an arterial access sheath for introducing an interventional device into an artery. The arterial access sheath includes an elongated body sized and shaped to be transcervically introduced into a common carotid artery at an access location in the neck and an internal lumen in the elongated body having a proximal opening in a proximal region of the elongated body and a distal opening in a distal region of the elongated body. The internal lumen provides a passageway for introducing an interventional device into the common carotid artery when the elongated body is positioned in the common carotid artery. The elongated body has a proximal section and a distalmost section that is more flexible than the proximal section. A ratio of an entire length of the distalmost section to an overall length of the sheath body is one tenth to one half the overall length of the sheath body.Type: GrantFiled: November 10, 2014Date of Patent: January 26, 2016Assignee: Silk Road Medical, Inc.Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
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Publication number: 20150359563Abstract: Disclosed is an apparatus for facilitating access to the left atrium, and specifically the left atrial appendage. The apparatus may comprise a sheath with first and second curved sections that facilitate location of the fossa ovalis and left atrial appendage. The apparatus may further comprise tissue piercing and dilating structures. Methods are also disclosed.Type: ApplicationFiled: August 25, 2015Publication date: December 17, 2015Applicant: ATRITECH, INC.Inventors: Stewart M. Kume, Erik J. van der Burg, Alex K. Khairkhahan, Chad C. Roue, Andrew G.C. Frazier, Alan R. Klenk, Marc S. Kreidler, Darrell H. Ogi
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Patent number: 9168047Abstract: Systems and methods for minimally invasive discectomy procedures are described herein. The systems include a bendable flexible cannula may have a straight configuration suitable for insertion and withdrawal into spinal tissue, and a curved configuration suitable for accessing certain areas of a vertebral disc that may be difficult to reach in the straight configuration. A cannula is straightened by inserting a straight stylet therethrough. The straight stylet may have a deflectable region that facilitates its insertion into the cannula. Removal of a straight stylet from a cannula may allow the cannula to assume its curved configuration. The systems may be used with tissue removal devices, and certain variations of tissue removal devices may include a collector for aspiration, as well as a travel limiter to restrict inadvertent motions of the tissue removal devices within a vertebral structure.Type: GrantFiled: April 2, 2010Date of Patent: October 27, 2015Inventors: John T. To, Dan Zaretzka, Myra I. L. Fabro, Stewart M. Kume
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Patent number: 9131849Abstract: Disclosed is an apparatus for facilitating access to the left atrium, and specifically the left atrial appendage. The apparatus may comprise a sheath with first and second curved sections that facilitate location of the fossa ovalis and left atrial appendage. The apparatus may further comprise tissue piercing and dilating structures. Methods are also disclosed.Type: GrantFiled: September 16, 2005Date of Patent: September 15, 2015Assignee: ATRITECH, INC.Inventors: Alexander K. Khairkhahan, Andrew G. C. Frazier, Alan R. Klenk, Marc S. Kreidler, Stewart M. Kume, Darrell H. Ogi, Chad C. Roue, Erik J. van der Burg
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Patent number: 9049986Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.Type: GrantFiled: September 20, 2011Date of Patent: June 9, 2015Assignee: Spine View, Inc.Inventors: Lex P. Jansen, John T. To, John W. Davis, Stewart M. Kume, Wendy Twardzik
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Publication number: 20150039021Abstract: Disclosed is an adjustable occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device is removably carried by a deployment catheter. The device may be enlarged or reduced to facilitate optimal placement or removal. Methods are also disclosed.Type: ApplicationFiled: October 22, 2014Publication date: February 5, 2015Inventors: Alexander K. Khairkhahan, Andrew G.C. Frazier, Alan R. Klenk, Marc S. Kreidler, Stewart M. Kume, Darrell H. Ogi, Chad C. Roue, Erik J. van der Burg
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Publication number: 20140148842Abstract: Disclosed is an adjustable occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device is removably carried by a deployment catheter. The device may be enlarged or reduced to facilitate optimal placement or removal. Methods are also disclosed.Type: ApplicationFiled: January 24, 2014Publication date: May 29, 2014Applicant: Atritech, Inc.Inventors: Alexander K. Khairkhahan, Andrew G.C. Frazier, Alan R. Klenk, Marc S. Kreidler, Stewart M. Kume, Darrell H. Ogi, Chad C. Roue, Erik J. van der Burg, Dino DeCicco, Michael D. Lesh
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Patent number: 8663273Abstract: Disclosed is an adjustable occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device is removably carried by a deployment catheter. The device may be enlarged or reduced to facilitate optimal placement or removal. Methods are also disclosed.Type: GrantFiled: October 17, 2011Date of Patent: March 4, 2014Assignee: Atritech, Inc.Inventors: Alexander K. Khairkhahan, Andrew G. C. Frazier, Alan R. Klenk, Marc S. Kreidler, Stewart M. Kume, Darrell H. Ogi, Chad C. Roue, Erik J. van der Burg, Dino DeCicco, Michael D. Lesh