Patents by Inventor Dawn Ma

Dawn Ma 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: 20240057995
    Abstract: A device for closing an opening in a body lumen, the device having a first elongate member with a first lumen, a second elongate member distal the first elongate member, and a needle assembly slidably cooperating with the first elongate member to position a plurality of sutures within the lumen of the first elongate member. The needle assembly includes a needle base and a plurality of needle portions extending from the needle base. Slidable movement of the needle assembly in relation to the first elongate member locates the plurality of sutures selectively mounted to the needle assembly within the first lumen.
    Type: Application
    Filed: October 31, 2023
    Publication date: February 22, 2024
    Inventors: Wouter E. Roorda, Douglas H. Mehl, Rizza A. Garcia, Timothy C. Reynolds, Dinorah V. Merrill, Dawn Ma, David J. Milazzo, Aaron M. Fortson
  • Patent number: 11839351
    Abstract: A device for closing an opening in a body lumen, the device having a first elongate member with a first lumen, a second elongate member distal the first elongate member, and a needle assembly slidably cooperating with the first elongate member to position a plurality of sutures within the lumen of the first elongate member. The needle assembly includes a needle base and a plurality of needle portions extending from the needle base. Slidable movement of the needle assembly in relation to the first elongate member locates the plurality of sutures selectively mounted to the needle assembly within the first lumen.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: December 12, 2023
    Assignee: Abbott Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Douglas H. Mehl, Rizza A. Garcia, Timothy C. Reynolds, Dinorah V. Merrill, Dawn Ma, David J. Milazzo, Aaron M. Fortson
  • Patent number: 10980531
    Abstract: A closure device for closing an opening in tissue is provided. The closure device includes an elongate member through which needles may be deployed. The closure device also includes a foot portion having one or more feet slidably mounted relative thereto. The feet are movable between a deployed position and a delivery position. The feet include cuffs removably mounted therein, with sutures connected between the cuffs. When the feet are in the deployed position and the needles are advanced, the needles securely engage the cuffs and draw the cuffs and suture through the lumen wall so that the opening in the lumen wall can be closed with the sutures.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: April 20, 2021
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS, INC.
    Inventors: Wouter E. Roorda, Douglas H. Mehl, Rizza A. Garcia, Timothy C. Reynolds, Dinorah V. Merrill, Dawn Ma, David J. Milazzo, Aaron M. Fortson
  • Publication number: 20210106324
    Abstract: A device for closing an opening in a body lumen, the device having a first elongate member with a first lumen, a second elongate member distal the first elongate member, and a needle assembly slidably cooperating with the first elongate member to position a plurality of sutures within the lumen of the first elongate member. The needle assembly includes a needle base and a plurality of needle portions extending from the needle base. Slidable movement of the needle assembly in relation to the first elongate member locates the plurality of sutures selectively mounted to the needle assembly within the first lumen.
    Type: Application
    Filed: December 22, 2020
    Publication date: April 15, 2021
    Inventors: Wouter E. Roorda, Douglas H. Mehl, Rizza A. Garcia, Timothy C. Reynolds, Dinorah V. Merrill, Dawn Ma, David J. Milazzo, Aaron M. Fortson
  • Patent number: 10507019
    Abstract: A suture trimmer including an elongate shaft including an elongate lumen extending proximally from a distal end of the elongate shaft, a transverse through-opening disposed proximal the distal end of the shaft, and a groove extending proximally from the distal end of the shaft to a distal end of the opening. A fitting is disposed within the elongate lumen at the distal end of the shaft and extends distally therefrom. A cutting member is slidably received within the lumen of the shaft and configured to move between a proximal end of the opening and the distal end of the opening and cut a suture disposed within and extending from the opening.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: December 17, 2019
    Assignee: Abbott Laboratories
    Inventors: T. Daniel Gross, Maurice Marthaler, Michael S. Dana, Dawn Ma
  • Patent number: 10143463
    Abstract: A method for closing a tissue puncture, where the method includes tensioning a suture loop disposed within a vascular tissue of a patient, the suture loop having two free ends and a knot disposed on one of the free end. Those two free ends are disposed through a suture snare comprising a snare. Following detachment of the suture snare from the two free ends, the knot is advanced to close the suture loop and a cutting member is advance towards the knot and the two free ends are cut.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: December 4, 2018
    Assignee: ABBOTT LABORATORIES
    Inventors: Mike S. Dana, Rob M. George, T. Daniel Gross, Maurice Marthaler, Dawn Ma, Jim Swett
  • Publication number: 20180338759
    Abstract: A closure device for closing an opening in tissue is provided. The closure device includes an elongate member through which needles may be deployed. The closure device also includes a foot portion having one or more feet slidably mounted relative thereto. The feet are movable between a deployed position and a delivery position. The feet include cuffs removably mounted therein, with sutures connected between the cuffs. When the feet are in the deployed position and the needles are advanced, the needles securely engage the cuffs and draw the cuffs and suture through the lumen wall so that the opening in the lumen wall can be closed with the sutures.
    Type: Application
    Filed: August 1, 2018
    Publication date: November 29, 2018
    Inventors: Wouter E. Roorda, Douglas H. Mehl, Rizza A. Garcia, Timothy C. Reynolds, Dinorah V. Merrill, Dawn Ma, David J. Milazzo, Aaron M. Fortson
  • Patent number: 10111653
    Abstract: A closure device for closing an opening in tissue is provided. The closure device includes an elongate member through which needles may be deployed. The closure device also includes a foot portion having one or more feet slidably mounted relative thereto. The feet are movable between a deployed position and a delivery position. The feet include cuffs removably mounted therein, with sutures connected between the cuffs. When the feet are in the deployed position and the needles are advanced, the needles securely engage the cuffs and draw the cuffs and suture through the lumen wall so that the opening in the lumen wall can be closed with the sutures.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: October 30, 2018
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS, INC.
    Inventors: Wouter E. Roorda, Douglas H. Mehl, Rizza A. Garcia, Timothy C. Reynolds, Dinorah V. Merrill, Dawn Ma, David J. Milazzo, Aaron M. Fortson
  • Patent number: 9993237
    Abstract: Devices, systems, and methods for suturing of body lumens allow the suturing of vascular puncture sites located at the distal end of a percutaneous tissue tract. An elongated articulated foot of the device can be inserted through the penetration and actuated so that the foot extends along the lumenal axis. The foot can carry suturing attachment cuffs with one end of the cuff adapted to receive a needle, while the other end receives suture. A portion of the foot and/or lumen of the shaft can receive a portion of the suture and can include friction reducing structure that aid with movement of the sutured during removal of the cuffs from within the penetration.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: June 12, 2018
    Assignee: Abbott Laboratories
    Inventor: Dawn Ma
  • Publication number: 20170319197
    Abstract: A suture trimmer including an elongate shaft including an elongate lumen extending proximally from a distal end of the elongate shaft, a transverse through-opening disposed proximal the distal end of the shaft, and a groove extending proximally from the distal end of the shaft to a distal end of the opening. A fitting is disposed within the elongate lumen at the distal end of the shaft and extends distally therefrom. A cutting member is slidably received within the lumen of the shaft and configured to move between a proximal end of the opening and the distal end of the opening and cut a suture disposed within and extending from the opening.
    Type: Application
    Filed: July 26, 2017
    Publication date: November 9, 2017
    Inventors: T. Daniel Gross, Maurice Marthaler, Michael S. Dana, Dawn Ma
  • Patent number: 9750494
    Abstract: A suture trimmer including an elongate shaft including an elongate lumen extending proximally from a distal end of the elongate shaft, a transverse through-opening disposed proximal the distal end of the shaft, and a groove extending proximally from the distal end of the shaft to a distal end of the opening. A fitting is disposed within the elongate lumen at the distal end of the shaft and extends distally therefrom. A cutting member is slidably received within the lumen of the shaft and configured to move between a proximal end of the opening and the distal end of the opening and cut a suture disposed within and extending from the opening.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: September 5, 2017
    Assignee: Abbott Laboratories
    Inventors: T. Daniel Gross, Maurice Marthaler, Michael Dana, Dawn Ma
  • Publication number: 20170020509
    Abstract: A method for closing a tissue puncture, where the method includes tensioning a suture loop disposed within a vascular tissue of a patient, the suture loop having two free ends and a knot disposed on one of the free end. Those two free ends are disposed through a suture snare comprising a snare. Following detachment of the suture snare from the two free ends, the knot is advanced to close the suture loop and a cutting member is advance towards the knot and the two free ends are cut.
    Type: Application
    Filed: April 25, 2016
    Publication date: January 26, 2017
    Inventors: Mike S. Dana, Rob M. George, T. Daniel Gross, Maurice Marthaler, Dawn Ma, Jim Swett
  • Publication number: 20160271364
    Abstract: In accordance with the present disclosure there is provided exemplary embodiments of an introducer sheath having a hub with an elongated tubular member extending from the hub. Disposed within the hub is a flexible valve member with a proximal surface and a distance surface and an aperture extending between the proximal surface and the distal surface. Both surfaces of the flexible valve member being parallel in a non-planar, retracted state and in a planar, relaxed state.
    Type: Application
    Filed: May 27, 2016
    Publication date: September 22, 2016
    Inventors: Douglas Rowe, Scott McIntosh, Dawn Ma, Laveille Kao Voss
  • Publication number: 20160192914
    Abstract: Devices, systems, and methods for suturing of body lumens allow the suturing of vascular puncture sites located at the distal end of a percutaneous tissue tract. An elongated articulated foot of the device can be inserted through the penetration and actuated so that the foot extends along the lumenal axis. The foot can carry suturing attachment cuffs with one end of the cuff adapted to receive a needle, while the other end receives suture. A portion of the foot and/or lumen of the shaft can receive a portion of the suture and can include friction reducing structure that aid with movement of the sutured during removal of the cuffs from within the penetration.
    Type: Application
    Filed: March 14, 2016
    Publication date: July 7, 2016
    Inventor: Dawn Ma
  • Patent number: 9352118
    Abstract: In accordance with the present disclosure there is provided exemplary embodiments of an introducer sheath, wherein the introducer sheath may be formed of multiple components at least one of which may be integrally formed or resiliently assembled to form a single introducer sheath. One embodiment of the introducer sheath includes a hub and a flexible valve. The flexible valve member may be non-planar in a relaxed state.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 31, 2016
    Assignee: ABBOTT LABORATORIES
    Inventors: Douglas Rowe, Scott McIntosh, Dawn Ma, Laveille Kao Voss
  • Publication number: 20160135805
    Abstract: A closure device for closing an opening in tissue is provided. The closure device includes an elongate member through which needles may be deployed. The closure device also includes a foot portion having one or more feet slidably mounted relative thereto. The feet are movable between a deployed position and a delivery position. The feet include cuffs removably mounted therein, with sutures connected between the cuffs. When the feet are in the deployed position and the needles are advanced, the needles securely engage the cuffs and draw the cuffs and suture through the lumen wall so that the opening in the lumen wall can be closed with the sutures.
    Type: Application
    Filed: January 25, 2016
    Publication date: May 19, 2016
    Inventors: Wouter E. Roorda, Douglas H. Mehl, Rizza Garcia, Timothy C. Reynolds, Dinorah Merrill, Dawn Ma, David J. Milazzo, Aaron M. Fortson
  • Patent number: 9320515
    Abstract: A suture trimmer having a shaft, a cutting member, an actuating device, and a snare. The shaft has a first end and a second end and bounds a bore extending from the first end toward the second end. The shaft has an opening formed in a side adjacent the first end. The cutting member is slidably disposed within the bore of the shaft and can be moved between a first position and a second position, such that when disposed in the second position the cutting member closes the opening formed in the side of the shaft. The actuating device is in communication with the cutting member and is operable to move the cutting member from the first position to the second position. The snare extends through the opening and out of the bore at the first end of the shaft.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: April 26, 2016
    Assignee: ABBOTT LABORATORIES
    Inventors: Mike Dana, Rob George, T. Daniel Gross, Maurice Marthaler, Dawn Ma, Jim Swett
  • Patent number: 9282960
    Abstract: Devices, systems, and methods for suturing of body lumens allow the suturing of vascular puncture sites located at the distal end of a percutaneous tissue tract. An elongated articulated foot of the device can be inserted through the penetration and actuated so that the foot extends along the lumenal axis. The foot can carry suturing attachment cuffs with one end of the cuff adapted to receive a needle, while the other end receives suture. A portion of the foot and/or lumen of the shaft can receive a portion of the suture and can include friction reducing structure that aid with movement of the sutured during removal of the cuffs from within the penetration.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: March 15, 2016
    Assignee: ABBOTT LABORATORIES
    Inventor: Dawn Ma
  • Patent number: 9241707
    Abstract: A closure device for closing an opening in tissue is provided. The closure device includes an elongate member through which needles may be deployed. The closure device also includes a foot portion having one or more feet slidably mounted relative thereto. The feet are movable between a deployed position and a delivery position. The feet include cuffs removably mounted therein, with sutures connected between the cuffs. When the feet are in the deployed position and the needles are advanced, the needles securely engage the cuffs and draw the cuffs and suture through the lumen wall so that the opening in the lumen wall can be closed with the sutures.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: January 26, 2016
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS, INC.
    Inventors: Wouter E. Roorda, Douglas H. Mehl, Rizza Garcia, Timothy C. Reynolds, Dinorah Merrill, Dawn Ma, David J. Milazzo, Aaron M. Fortson
  • Patent number: 9168359
    Abstract: In accordance with the present invention there is provided exemplary embodiments of an introducer sheath in accordance with the present invention, wherein the introducer sheath of the present invention is formed of multiple components which are resiliently assembled to form a single introducer sheath. One embodiment of the introducer sheath includes a hub, a retaining member and an elongated tubular member. The hub has a lumen that has a groove. The elongated tubular member has a proximal end that includes a flared portion. The distal end of the retaining member is configured to be received in the groove formed in the lumen of the hub. The distal end of the retaining member contacts the flared portion of the tubular member when distal end of the retaining member is disposed in the groove such that the tubular member is retained within the lumen of the hub in a sealed engagement.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: October 27, 2015
    Assignee: ABBOTT LABORATORIES
    Inventors: Douglas Rowe, Scott McIntosh, Dawn Ma