Patents by Inventor Greg Alan Walters

Greg Alan Walters 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: 20260115412
    Abstract: The present disclosure is an assembly and related method that allows laceration of a valve leaflet.
    Type: Application
    Filed: December 22, 2025
    Publication date: April 30, 2026
    Applicant: Excision Medical, Inc.
    Inventors: David Alexander WOOD, Janarthanan SATHANANTHAN, Greg Alan WALTERS, Philip J. HAARSTAD
  • Publication number: 20250375194
    Abstract: The present technology relates generally to devices and methods for closing percutaneous punctures, and more particularly to a multi-lumen tamper for such a device. A vascular closure device for sealing a percutaneous puncture in a wall of a body passageway is disclosed, the vascular closure device including a plug configured to engage a surface of the puncture; a suture configured coupled to the plug; a locking member configured to engage the plug; and a tamper comprising a first lumen and a second lumen.
    Type: Application
    Filed: March 24, 2025
    Publication date: December 11, 2025
    Applicant: Teleflex Life Sciences LLC
    Inventors: Greg Alan Walters, Samuel Nardone
  • Publication number: 20250204980
    Abstract: The present disclosure describes a surgical systems for traversing and lacerating a valve leaflet.
    Type: Application
    Filed: December 20, 2024
    Publication date: June 26, 2025
    Applicant: Excision Medical
    Inventors: Greg Alan Walters, Chad J. Smith, Mike A. Dotsey, Bryan Fitzgerald Allard, Francois Jouin, Shawn Sabu Cherian, Alison Mikayla Kane, Tessa Mazzerella
  • Patent number: 12285160
    Abstract: The present technology relates generally to devices and methods for closing percutaneous punctures, and more particularly to a multi-lumen tamper for such a device. A vascular closure device for sealing a percutaneous puncture in a wall of a body passageway is disclosed, the vascular closure device including a plug configured to engage a surface of the puncture; a suture configured coupled to the plug; a locking member configured to engage the plug; and a tamper comprising a first lumen and a second lumen.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: April 29, 2025
    Assignee: Teleflex Life Sciences LLC
    Inventors: Greg Alan Walters, Samuel Nardone
  • Publication number: 20240180583
    Abstract: The present disclosure describes an excision catheter system including a cutting catheter and extraction catheter. The cutting catheter is configured to pierce and/or cut a leaflet and the extraction catheter is configured to hold and/or remove the excised leaflet portion.
    Type: Application
    Filed: April 7, 2022
    Publication date: June 6, 2024
    Applicant: Excision Medical, Inc.
    Inventors: David Alexander WOOD, Janarthanan SATHANANTHAN, Michael Austin DOTSEY, Francois Louis JOUIN, Jason Donald KEISER, Greg Alan WALTERS
  • Publication number: 20240122694
    Abstract: The present disclosure describes a surgical system for a valve in an aorta. The surgical system is configured to serve as a temporary valve and/or filter to facilitate maintenance of proper blood flow while also capturing debris of an excised leaflet as needed.
    Type: Application
    Filed: October 12, 2023
    Publication date: April 18, 2024
    Applicant: Excision Medical, Inc.
    Inventors: Greg Alan WALTERS, Chad J. SMITH
  • Publication number: 20230381490
    Abstract: The present disclosure describes a surgical system for a valve in an aorta. The surgical system is configured to serve as a temporary valve and/or filter to facilitate maintenance of proper blood flow while also capturing debris of an excised leaflet as needed.
    Type: Application
    Filed: May 26, 2023
    Publication date: November 30, 2023
    Applicant: Excision Medical, Inc.
    Inventors: Greg Alan WALTERS, Francois JOUIN, Alison Mikayla KANE, Michael A. DOTSEY, Chad J. SMITH, Jason KEISER
  • Publication number: 20230301784
    Abstract: The present disclosure describes a surgical system for an aortic or mitral valve in a heart. The surgical system is configured to pierce, seize, and/or cut a leaflet, and/or facilitate removal of an excised portion of a leaflet.
    Type: Application
    Filed: March 28, 2023
    Publication date: September 28, 2023
    Applicant: Excision Medical, Inc.
    Inventors: Greg Alan WALTERS, Francois JOUIN, Michael A. DOTSEY, Shawn Sabu CHERIAN, Alison Mikayla KANE, Janarthanan SATHANANTHAN, Chad J. SMITH
  • Publication number: 20230000609
    Abstract: The present disclosure is a catheter assembly and related method that allows laceration of either a surgical valve or transcatheter valve leaflet to facilitate flow to the coronary arteries during valve in valve interventions.
    Type: Application
    Filed: December 5, 2020
    Publication date: January 5, 2023
    Applicant: Excision Medical, Inc.
    Inventors: David Alexander WOOD, Janarthanan SATHANANTHAN, Greg Alan WALTERS, Philip J. HAARSTAD
  • Publication number: 20220387201
    Abstract: An embodiment of the disclosure is a catheter system configured to be attached to an implanted medical device, such as an implanted valve. The catheter includes an engagement assembly having an elongated member that extends along a central axis, and an engagement member coupled to the elongated member. The engagement assembly has a retracted configuration, where the engagement member is disposed within the channel of the catheter, and an engagement configuration, where the engagement member is disposed outside of the channel and extends outwardly along a direction that is angled with respect to the central axis.
    Type: Application
    Filed: November 19, 2020
    Publication date: December 8, 2022
    Applicant: Excision Medical, Inc.
    Inventors: David Alexander WOOD, Janarthanan SATHANANTHAN, Greg Alan WALTERS, Philip J. HAARSTAD, Ramji IYER
  • Publication number: 20220000463
    Abstract: The present technology relates generally to devices and methods for closing percutaneous punctures, and more particularly to a multi-lumen tamper for such a device. A vascular closure device for sealing a percutaneous puncture in a wall of a body passageway is disclosed, the vascular closure device including a plug configured to engage a surface of the puncture; a suture configured coupled to the plug; a locking member configured to engage the plug; and a tamper comprising a first lumen and a second lumen.
    Type: Application
    Filed: September 16, 2021
    Publication date: January 6, 2022
    Applicant: Arrow International LLC
    Inventors: Greg Alan Walters, Samuel Nardone
  • Patent number: 11123053
    Abstract: The present technology relates generally to a method and device for closing percutaneous punctures, and more particularly to a multi-lumen tamper for such a device. A closure device for sealing a percutaneous puncture in a wall of a body passageway is disclosed, the closure device including a plug configured to engage a surface of the puncture; a toggle configured to engage an internal surface of the body passageway; an elongate filament configured to associate the plug with the toggle; a locking member configured to engage the plug; and a tamper comprising at least two lumens, wherein a first lumen of the at least two lumens is configured to deliver a pharmaceutical agent to the plug.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: September 21, 2021
    Assignee: Arrow International LLC
    Inventors: Greg Alan Walters, Samuel Nardone
  • Patent number: 10835224
    Abstract: A deployment instrument for deploying a closure device for sealing a percutaneous puncture in a wall of a body passageway, the deployment instrument including a carrier assembly, wherein the carrier assembly is configured to hold the closure device in a pre-deployment state, and a tensioner assembly, wherein the filament is fixedly attached to the tensioner assembly, wherein the deployment instrument is configured to increase the tension in the filament upon linear movement of the deployment instrument away from the wall of the body passageway when the closure device is anchored to the wall via the anchor such that the tension is gradually increased as the deployment instrument is moved between a first linear distance and a second linear distance greater than the first linear distance from the wall of the body passageway.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: November 17, 2020
    Assignee: Arrow International, Inc.
    Inventor: Greg Alan Walters
  • Publication number: 20190343498
    Abstract: The present technology relates generally to a method and device for closing percutaneous punctures, and more particularly to a multi-lumen tamper for such a device. A closure device for sealing a percutaneous puncture in a wall of a body passageway is disclosed, the closure device including a plug configured to engage a surface of the puncture; a toggle configured to engage an internal surface of the body passageway; an elongate filament configured to associate the plug with the toggle; a locking member configured to engage the plug; and a tamper comprising at least two lumens, wherein a first lumen of the at least two lumens is configured to deliver a pharmaceutical agent to the plug.
    Type: Application
    Filed: July 25, 2019
    Publication date: November 14, 2019
    Applicant: Essential Medical, Inc.
    Inventors: Greg Alan WALTERS, Samuel NARDONE
  • Patent number: 10390810
    Abstract: The present technology relates generally to a method and device for closing percutaneous punctures, and more particularly to a multi-lumen tamper for such a device. A closure device for sealing a percutaneous puncture in a wall of a body passageway is disclosed, the closure device including a plug configured to engage a surface of the puncture; a toggle configured to engage an internal surface of the body passageway; an elongate filament configured to associate the plug with the toggle; a locking member configured to engage the plug; and a tamper comprising at least two lumens, wherein a first lumen of the at least two lumens is configured to deliver a pharmaceutical agent to the plug.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: August 27, 2019
    Assignee: Essential Medical, Inc.
    Inventors: Greg Alan Walters, Samuel Nardone
  • Publication number: 20180070933
    Abstract: A deployment instrument for deploying a closure device for sealing a percutaneous puncture in a wall of a body passageway, the deployment instrument including a carrier assembly, wherein the carrier assembly is configured to hold the closure device in a pre-deployment state, and a tensioner assembly, wherein the filament is fixedly attached to the tensioner assembly, wherein the deployment instrument is configured to increase the tension in the filament upon linear movement of the deployment instrument away from the wall of the body passageway when the closure device is anchored to the wall via the anchor such that the tension is gradually increased as the deployment instrument is moved between a first linear distance and a second linear distance greater than the first linear distance from the wall of the body passageway.
    Type: Application
    Filed: November 15, 2017
    Publication date: March 15, 2018
    Applicant: Essential Medical, Inc.
    Inventor: Greg Alan Walters
  • Patent number: 9839417
    Abstract: A deployment instrument for deploying a closure device for sealing a percutaneous puncture in a wall of a body passageway, the deployment instrument including a carrier assembly, wherein the carrier assembly is configured to hold the closure device in a pre-deployment state, and a tensioner assembly, wherein the filament is fixedly attached to the tensioner assembly, wherein the deployment instrument is configured to increase the tension in the filament upon linear movement of the deployment instrument away from the wall of the body passageway when the closure device is anchored to the wall via the anchor such that the tension is gradually increased as the deployment instrument is moved between a first linear distance and a second linear distance greater than the first linear distance from the wall of the body passageway.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: December 12, 2017
    Assignee: Essential Medical, Inc.
    Inventor: Greg Alan Walters
  • Publication number: 20170333015
    Abstract: The present technology relates generally to a method and device for closing percutaneous punctures, and more particularly to a multi-lumen tamper for such a device. A closure device for sealing a percutaneous puncture in a wall of a body passageway is disclosed, the closure device including a plug configured to engage a surface of the puncture; a toggle configured to engage an internal surface of the body passageway; an elongate filament configured to associate the plug with the toggle; a locking member configured to engage the plug; and a tamper comprising at least two lumens, wherein a first lumen of the at least two lumens is configured to deliver a pharmaceutical agent to the plug.
    Type: Application
    Filed: August 11, 2017
    Publication date: November 23, 2017
    Inventors: Greg Alan Walters, Samuel Nardone
  • Patent number: 9757104
    Abstract: The present technology relates generally to a method and device for closing percutaneous punctures, and more particularly to a multi-lumen tamper for such a device. A closure device for sealing a percutaneous puncture in a wall of a body passageway is disclosed, the closure device including a plug configured to engage a surface of the puncture; a toggle configured to engage an internal surface of the body passageway; an elongate filament configured to associate the plug with the toggle; a locking member configured to engage the plug; and a tamper comprising at least two lumens, wherein a first lumen of the at least two lumens is configured to deliver a pharmaceutical agent to the plug.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: September 12, 2017
    Assignee: Essential Medical, Inc.
    Inventors: Greg Alan Walters, Samuel Nardone
  • Publication number: 20150068009
    Abstract: A deployment instrument for deploying a closure device for sealing a percutaneous puncture in a wall of a body passageway, the deployment instrument including a carrier assembly, wherein the carrier assembly is configured to hold the closure device in a pre-deployment state, and a tensioner assembly, wherein the filament is fixedly attached to the tensioner assembly, wherein the deployment instrument is configured to increase the tension in the filament upon linear movement of the deployment instrument away from the wall of the body passageway when the closure device is anchored to the wall via the anchor such that the tension is gradually increased as the deployment instrument is moved between a first linear distance and a second linear distance greater than the first linear distance from the wall of the body passageway.
    Type: Application
    Filed: September 19, 2014
    Publication date: March 12, 2015
    Inventor: Greg Alan Walters