Patents by Inventor Michi E. Garrison

Michi E. Garrison 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: 11103627
    Abstract: Methods and devices are disclosed that enable safe, rapid and relatively short and straight access to the cerebral arteries for the introduction of interventional devices to treat acute ischemic stroke. In addition, the disclosed methods and devices provide means to securely close the access site to the cerebral arteries to avoid the potentially devastating consequences of a transcervical hematoma.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: August 31, 2021
    Assignee: Silk Road Medical, Inc.
    Inventors: Michi E. Garrison, Tony M. Chou, Gregory M. Hyde
  • Patent number: 11097132
    Abstract: Described herein are methods and devices for selectively applying either fluids (e.g., anesthetics, nerve-blockers, etc.) or energy, such as radiofrequency or ultrasound energy, to a target tissue from within a blood vessel while minimizing the amount of fluid or energy applied to non-target tissue. The catheters described herein may include an elongate body, a directional injector, and one or more holdfasts for securing the catheter. In addition, catheters can include energy applying features for delivering energy to the target tissue.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: August 24, 2021
    Assignee: Silk Road Medical, Inc.
    Inventors: Michi E. Garrison, Richard M. Ruedy
  • Publication number: 20210244522
    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 means for embolic protection during such an endovascular aortic valve implantation procedure.
    Type: Application
    Filed: February 19, 2021
    Publication date: August 12, 2021
    Inventors: Erica J. Rogers, Michael P. Wallace, Sumaira Macdonald, 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
  • Publication number: 20210212679
    Abstract: A device is configured for closing an aperture in a wall of a blood vessel. An embodiment of the device includes a body and at least one suture element held within the body. A suture capture rod is positioned within the body and is operatively associated with the suture element and arranged to pass the suture element through a vessel wall such that opposed portions of the suture element extend from the vessel wall. A removable guidewire segment is removably attached to a distal end of the body.
    Type: Application
    Filed: December 1, 2020
    Publication date: July 15, 2021
    Inventors: Ronald Hentges, Michi E. Garrison
  • Publication number: 20210138194
    Abstract: An intravascular access system for facilitation of intraluminal medical procedures within the neurovasculature through an access sheath. The system includes an aspiration or support catheter having a flexible, distal luminal portion having an inner diameter defining a lumen extending between a proximal opening at a proximal end of the luminal portion and a distal opening at a distal end of the luminal portion. The catheter has a rigid spine coupled to at least the proximal end of the luminal portion and extending proximally therefrom. The system includes a dilator having a flexible, distal dilator portion sized to be received within the lumen of the luminal portion. Associated systems, devices, and methods of use are also described.
    Type: Application
    Filed: January 19, 2021
    Publication date: May 13, 2021
    Inventors: Michi E. Garrison, Tony M. Chou, Scott D. Wilson
  • Publication number: 20210138193
    Abstract: An intravascular access system for facilitation of intraluminal medical procedures within the neurovasculature through an access sheath. The system includes an aspiration or support catheter having a flexible, distal luminal portion having an inner diameter defining a lumen extending between a proximal opening at a proximal end of the luminal portion and a distal opening at a distal end of the luminal portion. The catheter has a rigid spine coupled to at least the proximal end of the luminal portion and extending proximally therefrom. The system includes a dilator having a flexible, distal dilator portion sized to be received within the lumen of the luminal portion. Associated systems, devices, and methods of use are also described.
    Type: Application
    Filed: January 19, 2021
    Publication date: May 13, 2021
    Inventors: Michi E. Garrison, Tony M. Chou, Scott D. Wilson
  • Patent number: 10973502
    Abstract: A vessel access and closure assist system is used for accessing a vessel to perform a vascular intervention. The system facilitates the delivery of a vessel closure device onto a blood vessel for closing an opening in the wall of the blood vessel. The vessel access and closure assist system includes a procedural introducer sheath that directly couples to a vessel closure device delivery sheath such that the procedural introducer sheath does not have to be exchanged with the vessel closure device delivery sheath.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: April 13, 2021
    Assignee: Silk Road Medical, Inc.
    Inventor: Michi E. Garrison
  • Patent number: 10952882
    Abstract: Systems and methods are adapted for treating the carotid artery. The systems include interventional catheters and blood vessel access devices that are adapted for transcervical insertion into the carotid artery. Embodiments of the systems and methods can be used in combination with embolic protection systems including blood flow reversal mechanisms, arterial filters, and arterial occlusion devices.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: March 23, 2021
    Assignee: Silk Road Medical, Inc.
    Inventors: Tony M. Chou, Michi E. Garrison, Gregory M. Hyde, Richard Renati, Alan Schaer
  • Publication number: 20210069467
    Abstract: A system of devices for treating an artery includes an arterial access sheath adapted to introduce an interventional catheter into an artery and an elongated dilator positionable within the internal lumen of the sheath body. The system also includes a catheter formed of an elongated catheter body sized and shaped to be introduced via a carotid artery access site into a common carotid artery through the internal lumen of the arterial access sheath. The catheter has an overall length and a distal most section length such that the distal most section can be positioned in an intracranial artery and at least a portion of the proximal most section is positioned in the common carotid artery during use.
    Type: Application
    Filed: November 9, 2020
    Publication date: March 11, 2021
    Inventors: Michi E. Garrison, Tony M. Chou
  • Patent number: 10939929
    Abstract: An aspiration device can be used to aspirate an obstruction from a blood vessel. The aspiration device is configured to allow controlled one-handed aspiration yet maintain a syringe plunger feel of vacuum. The aspiration device also allows one-handed injection to empty the device when needed. Furthermore, mechanisms enable one-handed locking of a plunger position of the device to maintain vacuum when the user releases the device.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 9, 2021
    Assignee: Silk Road Medical, Inc.
    Inventors: Michi E. Garrison, Sieu T. Duong
  • Publication number: 20210052296
    Abstract: An arterial access device has an internal lumen and a proximal port, the arterial access device sized and shaped to be inserted directly into an arterial access site in the common carotid artery such that the lumen provides a passageway for an interventional device to be inserted via the proximal port into the carotid artery. The arterial access device has a distal portion that is configured to be inserted into an arterial pathway through the access site, and a proximal portion configured to extend outward from the access site when the distal portion is in the arterial pathway.
    Type: Application
    Filed: September 3, 2020
    Publication date: February 25, 2021
    Inventor: Michi E. Garrison
  • Patent number: 10925709
    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 means for embolic protection during such an endovascular aortic valve implantation procedure.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: February 23, 2021
    Assignee: Silk Road Medical, Inc.
    Inventors: Erica J. Rogers, Michael P. Wallace, Sumaira Macdonald, Michi E. Garrison
  • Publication number: 20210045758
    Abstract: Described are methods and systems for transcervical access of the cerebral arterial vasculature and treatment of cerebral occlusions, including ischemic stroke. The methods and devices may include methods and devices which may provide aspiration and passive flow reversal, those which protect the cerebral penumbra during the procedure to minimize injury to brain, as well as distal catheters and devices to remove an occlusion. The methods and devices that provide passive flow reversal may also offer to the user a degree of flow control. Devices and methods which provide a way to securely close the access site in the carotid artery to avoid the potentially devastating consequences of a transcervical hematoma are also described.
    Type: Application
    Filed: November 4, 2020
    Publication date: February 18, 2021
    Inventors: Michi E. Garrison, Tony M. Chou
  • Patent number: 10881393
    Abstract: A device is configured for closing an aperture in a wall of a blood vessel. An embodiment of the device includes a body and at least one suture element held within the body. A suture capture rod is positioned within the body and is operatively associated with the suture element and arranged to pass the suture element through a vessel wall such that opposed portions of the suture element extend from the vessel wall. A removable guidewire segment is removably attached to a distal end of the body.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: January 5, 2021
    Assignee: Silk Road Medical, Inc.
    Inventors: Ronald Hentges, Michi E. Garrison
  • Publication number: 20200390438
    Abstract: A suture-based vessel closure device can perform the dilation of an arteriotomy puncture and does not require previous dilation of the arteriotomy puncture by a separate device or by a procedural sheath dilator. The suture-based vessel closure device can place one or more sutures across the vessel access site such that, when the suture ends are tied off after sheath removal, the stitch or stitches provide hemostasis to the access site.
    Type: Application
    Filed: August 21, 2020
    Publication date: December 17, 2020
    Inventors: Michi E. Garrison, Gregory M. Hyde, Richard J. Renati, Alan K. Schaer, Tony M. Chou
  • 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
  • Patent number: 10864351
    Abstract: A system of devices for treating an artery includes an arterial access sheath adapted to introduce an interventional catheter into an artery and an elongated dilator positionable within the internal lumen of the sheath body. The system also includes a catheter formed of an elongated catheter body sized and shaped to be introduced via a carotid artery access site into a common carotid artery through the internal lumen of the arterial access sheath. The catheter has an overall length and a distal most section length such that the distal most section can be positioned in an intracranial artery and at least a portion of the proximal most section is positioned in the common carotid artery during use.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: December 15, 2020
    Assignee: Route 92 Medical, Inc.
    Inventors: Michi E. Garrison, Tony M. Chou
  • Publication number: 20200375728
    Abstract: Devices and methods are configured to allow transcervical 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 means for embolic protection during such an endovascular aortic valve implantation procedure.
    Type: Application
    Filed: August 21, 2020
    Publication date: December 3, 2020
    Inventors: Michi E. Garrison, Tony M. Chou, Gregory M. Hyde