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).

  • Publication number: 20240149028
    Abstract: 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: Application
    Filed: August 11, 2023
    Publication date: May 9, 2024
    Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
  • Patent number: 11864988
    Abstract: 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: Grant
    Filed: September 9, 2021
    Date of Patent: January 9, 2024
    Assignee: Silk Road Medical, Inc.
    Inventors: Sumaira MacDonald, Stewart M. Kume
  • Patent number: 11759613
    Abstract: 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: Grant
    Filed: November 9, 2020
    Date of Patent: September 19, 2023
    Assignee: Silk Road Medical, Inc.
    Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
  • Publication number: 20220378565
    Abstract: Devices and methods are configured to allow transcarotid or subclavian access via the common carotid artery to the native aortic valve, and implantation of a prosthetic aortic valve into the heart. The devices and methods also provide for embolic protection during such an endovascular aortic valve implantation procedure.
    Type: Application
    Filed: November 2, 2020
    Publication date: December 1, 2022
    Inventors: Stewart M. Kume, Sumaira MacDonald, Erica J. Rogers, Harold Carrison
  • Patent number: 11433226
    Abstract: 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: Grant
    Filed: March 12, 2019
    Date of Patent: September 6, 2022
    Assignee: Silk Road Medical, Inc.
    Inventors: Stewart M. Kume, Sieu T. Duong, Michi E. Garrison
  • Publication number: 20220202552
    Abstract: 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 nto 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: Application
    Filed: September 9, 2021
    Publication date: June 30, 2022
    Inventors: Sumaira MacDonald, Stewart M. Kume
  • Publication number: 20220193321
    Abstract: Methods, devices, and systems establish and facilitate arterial access for interventional procedures, such as stenting, angioplasty, grafting, replacement valve therapy, and atherectomy.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Inventors: Stewart M. Kume, Zack Tegels, Kristen Lipschultz, Brad Steele
  • Publication number: 20220047267
    Abstract: 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. Devices and methods are configured for procedures performed through a transcarotid approach for performing transcarotid procedures, including carotid angioplasty, stent deployment, and post stent deployment procedures.
    Type: Application
    Filed: August 10, 2021
    Publication date: February 17, 2022
    Inventors: Natasha Johnston, Stewart M. Kume, Erica J. Rogers
  • Publication number: 20210322738
    Abstract: 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: Application
    Filed: May 4, 2021
    Publication date: October 21, 2021
    Inventors: Stewart M. Kume, Michael Chang, Michael P. Wallace
  • Patent number: 11141259
    Abstract: 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: Grant
    Filed: October 26, 2018
    Date of Patent: October 12, 2021
    Assignee: Silk Road Medical, Inc.
    Inventors: Sumaira Macdonald, Stewart M. Kume
  • Publication number: 20210299425
    Abstract: 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: Application
    Filed: June 11, 2021
    Publication date: September 30, 2021
    Inventors: Stewart M. Kume, Sieu T. Duong, Michi E. Garrison
  • Publication number: 20210236790
    Abstract: 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: Application
    Filed: April 22, 2021
    Publication date: August 5, 2021
    Inventors: Stewart M. Kume, Sieu T. Duong, Michi E. Garrison
  • Publication number: 20210228847
    Abstract: 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: Application
    Filed: November 9, 2020
    Publication date: July 29, 2021
    Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
  • Patent number: 11027104
    Abstract: 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: Grant
    Filed: July 5, 2017
    Date of Patent: June 8, 2021
    Assignee: Silk Road Medical, Inc.
    Inventors: Stewart M. Kume, Michael Chang, Michael P. Wallace
  • Publication number: 20210145453
    Abstract: Systems and methods are configured for accessing and treating carotid arterial vasculature and establishing retrograde blood flow during performance of carotid artery stenting and other procedures.
    Type: Application
    Filed: November 18, 2020
    Publication date: May 20, 2021
    Inventor: Stewart M. Kume
  • Publication number: 20200397472
    Abstract: 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: Application
    Filed: June 19, 2020
    Publication date: December 24, 2020
    Inventors: Sumaira MacDonald, Stewart M. Kume
  • Patent number: 10864357
    Abstract: 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: Grant
    Filed: August 6, 2018
    Date of Patent: December 15, 2020
    Assignee: Silk Road Medical, Inc.
    Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno
  • Publication number: 20190366070
    Abstract: 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: Application
    Filed: March 12, 2019
    Publication date: December 5, 2019
    Inventors: Stewart M. Kume, Sieu T. Duong, Michi E. Garrison
  • Patent number: 10426589
    Abstract: A method of delivering and deploying the device for containing the emboli during a surgical procedure proximate to the heart. Access is gained to the heart and the left atrium such that a distal end of the delivery sheath can be located near the left atrial appendage. A distal end of a delivery catheter can be loaded with the device in a collapsed position and passed through the delivery sheath thereby delivering the device within the left atrial appendage. The device is expanded to contain emboli in the left atrium appendage.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: October 1, 2019
    Assignee: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Erik J. van der Burg, Stewart M. Kume
  • Publication number: 20190175885
    Abstract: 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: Application
    Filed: August 6, 2018
    Publication date: June 13, 2019
    Inventors: Stewart M. Kume, Michi E. Garrison, Michael P. Wallace, Herbert Mendoza, Marlon Moreno