Patents by Inventor Craig Welk

Craig Welk 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: 20230363886
    Abstract: A stent graft system includes a first layer of graft material, a second layer of graft material, one or more stent members, one or more reducing belts, and a release wire. The one or more stent members are located between the first layer of graft material and the second layer of graft material. The second layer of graft material is formed to have a corresponding channel over each of the one or more stent members. The one or more reducing belts each include a loop at both ends and each is located in a corresponding channel around a corresponding one of the stent members. The release wire passes through both loops of each of the one or more reducing belts when the one or more stent members are in a compressed state. Pulling the release wire allows for the stent graft system to radially expand.
    Type: Application
    Filed: April 21, 2023
    Publication date: November 16, 2023
    Inventors: Mark Geusen, Dale Ehnes, Jason Maggard, Riley King, Craig Welk
  • Patent number: 11717392
    Abstract: A method of treating an aortic aneurysm of a patient with an endovascular graft system and mitigating post implant syndrome associated therewith comprises placing at least one prosthesis across an aneurysmal space. The prosthesis comprises a double-walled filling structure and a stent-graft. The stent graft is radially expanded at a first pressure and the filing structure is filled with a first filing agent to contact a thrombus in the aortic aneurysmal space. After the first filling agent is removed, the filling structure is filled with a second filling agent to contact the thrombus. Next the stent-graft is expanded at a second pressure causing the filing structure to place an effective amount of pressure on the thrombus and substantially mitigating the effects of post implant syndrome associated with the prosthesis.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: August 8, 2023
    Assignee: Endologix LLC
    Inventors: Mohammed Arif Iftekhar, Peter Costandi, Carlos Ortega, Chris Williams, Craig Welk
  • Publication number: 20230218416
    Abstract: A fenestrated graft deployment system, with a delivery catheter having a catheter body, An endoluminal prosthesis having a main graft body, the main graft body having a lumen therethrough and a first opening laterally through a wall of the main graft body. A first guidewire prepositioned within the delivery catheter extending through at least a portion of the catheter body into a main lumen of the endoluminal prosthesis and through the first opening in the wall of the prosthesis when the delivery catheter is in a predeployed configuration. A first fenestration alignment device is configured to extend through at least a portion of the delivery catheter and is configured to be axially moveable relative to the first guidewire.
    Type: Application
    Filed: August 5, 2022
    Publication date: July 13, 2023
    Inventors: Kevin Mayberry, Craig Welk, Richard Monetti
  • Patent number: 11660179
    Abstract: A stent graft system includes a first layer of graft material, a second layer of graft material, one or more stent members, one or more reducing belts, and a release wire. The one or more stent members are located between the first layer of graft material and the second layer of graft material. The second layer of graft material is formed to have a corresponding channel over each of the one or more stent members. The one or more reducing belts each include a loop at both ends and each is located in a corresponding channel around a corresponding one of the stent members. The release wire passes through both loops of each of the one or more reducing belts when the one or more stent members are in a compressed state. Pulling the release wire allows for the stent graft system to radially expand.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: May 30, 2023
    Assignee: Endologix LLC
    Inventors: Mark Geusen, Dale Ehnes, Jason Maggard, Riley King, Craig Welk
  • Patent number: 11559386
    Abstract: Endovascular systems for deployment at branched arteries include a main tubular graft body deployable within a main artery including a proximal end and an opposed distal end. The proximal and distal ends have a tubular graft wall therein between. A plurality of inflatable channels are disposed along the main tubular graft body, and at least one stent segment is disposed along the tubular graft wall of the main tubular graft body. The plurality of inflatable channels are configured to be inflatable with an inflation medium. The at least one stent segment is disposed between two or more adjacent inflatable channels of the plurality of inflatable channels.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: January 24, 2023
    Assignee: Endologix LLC
    Inventors: Dale Ehnes, Arif Iftekhar, Craig Welk, Kevin Knoll
  • Patent number: 11497597
    Abstract: An apparatus includes a first stent graft that is at least partially insertable into a first blood vessel. The first stent graft has a first end, a second end, an inside surface, and an outside surface. The apparatus also includes an inflatable fill structure fixed to a portion of the outside surface of the first stent graft. The inflatable fill structure includes an outer membrane that is configured to extend beyond the first end of the first stent graft when the inflatable fill structure is in a filled state.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: November 15, 2022
    Assignee: Endologix LLC
    Inventors: Stefan Schreck, Craig Welk
  • Patent number: 11439524
    Abstract: Apparatus for delivering stents to body lumens include one or more tubular prostheses carried at the distal end of a catheter shaft, a sheath slidably disposed over the prostheses, and a guidewire tube extending from within the sheath to the exterior of the sheath through an exit port in a sidewall thereof. A guidewire extends slidably through the guidewire tube. The sheath can be moved relative to the catheter shaft and the guidewire tube to expose the prostheses for deployment. Methods of delivering stents are also provided.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: September 13, 2022
    Assignee: J.W. Medical Systems Ltd.
    Inventors: Dan J. Hammersmark, Stephen Kao, Craig Welk, Pablo Acosta, Joseph Karatt
  • Patent number: 11406518
    Abstract: A fenestrated graft deployment system, with a delivery catheter having a catheter body, a first fenestration alignment device, and an endoluminal prosthesis having a main graft body having a lumen therethrough and a first opening laterally therein. The first fenestration alignment device is configured to extend through at least a portion of the delivery catheter and is configured to be axially moveable relative to the first guidewire. The first fenestration alignment device can cause the main graft body adjacent to the first opening to move with the end of the first fenestration alignment device to allow an operator to align the first opening in the side of the endoluminal prosthesis with an ostium of a target branch vessel into which said first opening is to extend and act as a guide and seal for a subsequently delivered branch graft endoluminal prosthesis.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: August 9, 2022
    Assignee: Endologix LLC
    Inventors: Kevin Mayberry, Craig Welk, Richard Monetti
  • Publication number: 20220218503
    Abstract: A locking assembly for releasably coupling a first elongate member to a second elongate member is provided. The locking assembly can include a first lumen for anchoring the locking assembly to a catheter and a second lumen for releasably retaining a guidewire to the locking assembly. A release member can interface with the locking assembly and apply a force that decouples the guidewire from the locking assembly.
    Type: Application
    Filed: September 24, 2021
    Publication date: July 14, 2022
    Inventors: Kevin Chu, Rolando Lee, Craig Welk, Bryant Tran
  • Publication number: 20210401566
    Abstract: A stent graft system includes a first graft, a second graft, and a third graft. Each of the first graft, the second graft, and the third graft forms a single lumen. When deployed, the first graft, the second graft, and the third graft are coupled together within an aorta.
    Type: Application
    Filed: September 23, 2019
    Publication date: December 30, 2021
    Inventors: Mark Geusen, Teri Woodson, Christopher Staudenmayer, Dennis Parson, Dion Thurow, Ryan Goff, Kaushik Patel, Aric Stone, Dale Ehnes, Craig Welk
  • Patent number: 11129737
    Abstract: A locking assembly for releasably coupling a first elongate member to a second elongate member is provided. The locking assembly can include a first lumen for anchoring the locking assembly to a catheter and a second lumen for releasably retaining a guidewire to the locking assembly. A release member can interface with the locking assembly and apply a force that decouples the guidewire from the locking assembly.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: September 28, 2021
    Assignee: Endologix LLC
    Inventors: Kevin Chu, Rolando Lee, Craig Welk, Bryant Tran
  • Publication number: 20210205066
    Abstract: A stent graft system includes a first layer of graft material, a second layer of graft material, one or more stent members, one or more reducing belts, and a release wire. The one or more stent members are located between the first layer of graft material and the second layer of graft material. The second layer of graft material is formed to have a corresponding channel over each of the one or more stent members. The one or more reducing belts each include a loop at both ends and each is located in a corresponding channel around a corresponding one of the stent members. The release wire passes through both loops of each of the one or more reducing belts when the one or more stent members are in a compressed state. Pulling the release wire allows for the stent graft system to radially expand.
    Type: Application
    Filed: May 30, 2019
    Publication date: July 8, 2021
    Inventors: Mark Geusen, Dale Ehnes, Jason Maggard, Riley King, Craig Welk
  • Publication number: 20210093440
    Abstract: A method of treating an aortic aneurysm of a patient with an endovascular graft system and mitigating post implant syndrome associated therewith comprises placing at least one prosthesis across an aneurysmal space. The prosthesis comprises a double-walled filling structure and a stent-graft. The stent graft is radially expanded at a first pressure and the filing structure is filled with a first filing agent to contact a thrombus in the aortic aneurysmal space. After the first filling agent is removed, the filling structure is filled with a second filling agent to contact the thrombus. Next the stent-graft is expanded at a second pressure causing the filing structure to place an effective amount of pressure on the thrombus and substantially mitigating the effects of post implant syndrome associated with the prosthesis.
    Type: Application
    Filed: April 22, 2019
    Publication date: April 1, 2021
    Inventors: Mohammed Arif Iftekhar, Peter Costandi, Carlos Ortega, Chris Williams, Craig Welk
  • Publication number: 20200170778
    Abstract: Endovascular systems for deployment at branched arteries include a main tubular graft body deployable within a main artery including a proximal end and an opposed distal end. The proximal and distal ends have a tubular graft wall therein between. A plurality of inflatable channels are disposed along the main tubular graft body, and at least one stent segment is disposed along the tubular graft wall of the main tubular graft body. The plurality of inflatable channels are configured to be inflatable with an inflation medium. The at least one stent segment is disposed between two or more adjacent inflatable channels of the plurality of inflatable channels.
    Type: Application
    Filed: July 6, 2018
    Publication date: June 4, 2020
    Inventors: Dale Ehnes, Arif Iftekhar, Craig Welk, Kevin Knoll
  • Patent number: 10603196
    Abstract: Some embodiments of the present disclosure are directed to endoluminal prostheses having one or more reinforced fenestrations therein. The one or more reinforced fenestrations can have improved sealing capabilities with respect to branch grafts deployed within the fenestrations, improved tear resistance and expandability, and improved pull-out resistance for branch grafts. In some embodiments, the endoluminal prosthesis can have a main graft body defining a flow lumen therethrough, a first opening passing through a wall of the main graft body, and a first support member supported by the main graft body and overlapping an edge of the first opening, the first support member being configured to at least increase the tear resistance of the main graft body adjacent to the first opening. The support member can be stitched or otherwise attached to the main graft adjacent to the fenestration.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: March 31, 2020
    Assignee: Endologix, Inc.
    Inventors: Kevin Mayberry, Daniel Clair, Craig Welk, Stefan G. Schreck
  • Publication number: 20200069412
    Abstract: An apparatus includes a first stent graft that is at least partially insertable into a first blood vessel. The first stent graft has a first end, a second end, an inside surface, and an outside surface. The apparatus also includes an inflatable fill structure fixed to a portion of the outside surface of the first stent graft. The inflatable fill structure includes an outer membrane that is configured to extend beyond the first end of the first stent graft when the inflatable fill structure is in a filled state.
    Type: Application
    Filed: November 11, 2019
    Publication date: March 5, 2020
    Inventors: Stefan Schreck, Craig Welk
  • Patent number: 10470870
    Abstract: An apparatus includes a first stent graft that is at least partially insertable into a first blood vessel. The first stent graft has a first end, a second end, an inside surface, and an outside surface. The apparatus also includes an inflatable fill structure fixed to a portion of the outside surface of the first stent graft. The inflatable fill structure includes an outer membrane that is configured to extend beyond the first end of the first stent graft when the inflatable fill structure is in a filled state.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: November 12, 2019
    Assignee: ENDOLOGIX, INC.
    Inventors: Stefan Schreck, Craig Welk
  • Publication number: 20190151124
    Abstract: Apparatus for delivering stents to body lumens include one or more tubular prostheses carried at the distal end of a catheter shaft, a sheath slidably disposed over the prostheses, and a guidewire tube extending from within the sheath to the exterior of the sheath through an exit port in a sidewall thereof. A guidewire extends slidably through the guidewire tube. The sheath can be moved relative to the catheter shaft and the guidewire tube to expose the prostheses for deployment. Methods of delivering stents are also provided.
    Type: Application
    Filed: January 17, 2019
    Publication date: May 23, 2019
    Inventors: Dan J. HAMMERSMARK, Stephen KAO, Craig WELK, Pablo ACOSTA, Joseph KARATT
  • Patent number: 10219923
    Abstract: Apparatus for delivering stents to body lumens include one or more tubular prostheses carried at the distal end of a catheter shaft, a sheath slidably disposed over the prostheses, and a guidewire tube extending from within the sheath to the exterior of the sheath through an exit port in a sidewall thereof. A guidewire extends slidably through the guidewire tube. The sheath can be moved relative to the catheter shaft and the guidewire tube to expose the prostheses for deployment. Methods of delivering stents are also provided.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: March 5, 2019
    Assignee: J.W. MEDICAL SYSTEMS LTD.
    Inventors: Dan Jeffery Hammersmark, Stephen Kao, Craig Welk, Pablo Acosta, Joseph Karatt
  • Publication number: 20190008631
    Abstract: A system includes a graft body and a filling structure. The graft body has a fenestration in a side surface through which a support structure is insertable. The filling structure has an internal volume that is tillable with a filling medium and is configured to have a conduit through the internal volume through which the support structure is insertable. The conduit in the filling structure is alignable with the fenestration in the graft body such that the support structure is insertable through both the conduit in the filling structure and the fenestration in the graft body.
    Type: Application
    Filed: December 23, 2016
    Publication date: January 10, 2019
    Inventors: Aric Stone, James Machek, Craig Welk, Mehdi Durali, Peter Nalbach, Avyaya Sharma, Carlos Ortega, Girma Kebede, Ryan Goff, John Weaver, Swanand Sardesai, Sanaz Sotodeh, Jason Rinehart