Patents by Inventor Jeffrey C. Leung

Jeffrey C. Leung 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: 11723654
    Abstract: A barbed suture including a body with barbs on the periphery, a pointed end, and an anchor at one end to resist movement of the suture in the direction of the pointed end is provided. One or more limbs on the anchor may be provided, which may be arcuate, of varying lengths, and of varying distribution about the periphery of the suture body. Other anchor designs are provided. Methods of placing single-directional and bi-directional barbed sutures to approximate the tissue on each side of a wound and to position and support tissue in the absence of a wound, as in cosmetic surgery, are provided, and may include terminal J-stitches or S-stitches. Methods of placement may be made with sharp, pointed ends, which may be needles, or insertion devices. Sinusoidal patterns of sutures that have amplitudes generally perpendicular to the resultant holding force of the suture are provided.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: August 15, 2023
    Assignees: Ethicon, Inc., Cilag GmbH International
    Inventors: Gregory L. Ruff, Jeffrey C. Leung, Andrew Kaplan, Matthew A. Megaro, Stanton D. Batchelor
  • Publication number: 20200397431
    Abstract: A barbed suture including a body with barbs on the periphery, a pointed end, and an anchor at one end to resist movement of the suture in the direction of the pointed end is provided. One or more limbs on the anchor may be provided, which may be arcuate, of varying lengths, and of varying distribution about the periphery of the suture body. Other anchor designs are provided. Methods of placing single-directional and bi-directional barbed sutures to approximate the tissue on each side of a wound and to position and support tissue in the absence of a wound, as in cosmetic surgery, are provided, and may include terminal J-stitches or S-stitches. Methods of placement may be made with sharp, pointed ends, which may be needles, or Insertion devices. Sinusoidal patterns of sutures that have amplitudes generally perpendicular to the resultant holding force of the suture are provided.
    Type: Application
    Filed: August 25, 2020
    Publication date: December 24, 2020
    Inventors: Gregory L. Ruff, Jeffrey C. Leung, Andrew Kaplan, Matthew A. Megaro, Stanton D. Batchelor
  • Patent number: 10779815
    Abstract: A barbed suture including a body with barbs on the periphery, a pointed end, and an anchor at one end to resist movement of the suture in the direction of the pointed end is provided. One or more limbs on the anchor may be provided, which may be arcuate, of varying lengths, and of varying distribution about the periphery of the suture body. Other anchor designs are provided. Methods of placing single-directional and bi-directional barbed sutures to approximate the tissue on each side of a wound and to position and support tissue in the absence of a wound, as in cosmetic surgery, are provided, and may include terminal J-stitches or S-stitches. Methods of placement may be made with sharp, pointed ends, which may be needles, or insertion devices. Sinusoidal patterns of sutures that have amplitudes generally perpendicular to the resultant holding force of the suture are provided.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: September 22, 2020
    Assignees: Ethicon, Inc., Ethicon, LLC
    Inventors: Gregory L. Ruff, Jeffrey C. Leung, Andrew Kaplan, Matthew A. Megaro, Stanton D. Batchelor
  • Patent number: 10548592
    Abstract: A barbed suture including a body with barbs on the periphery, a pointed end, and an anchor at one end to resist movement of the suture in the direction of the pointed end is provided. One or more limbs on the anchor may be provided, which may be arcuate, of varying lengths, and of varying distribution about the periphery of the suture body. Other anchor designs are provided. Methods of placing single-directional and bi-directional barbed sutures to approximate the tissue on each side of a wound and to position and support tissue in the absence of a wound, as in cosmetic surgery, are provided, and may include terminal J-stitches or S-stitches. Methods of placement may be made with sharp, pointed ends, which may be needles, or insertion devices. Sinusoidal patterns of sutures that have amplitudes generally perpendicular to the resultant holding force of the suture are provided.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: February 4, 2020
    Assignees: Ethicon, Inc., Ethicon, LLC
    Inventors: Gregory L. Ruff, Jeffrey C. Leung, Andrew Kaplan, Matthew A. Megaro, Stanton D. Batchelor
  • Publication number: 20180325512
    Abstract: A barbed suture including a body with barbs on the periphery, a pointed end, and an anchor at one end to resist movement of the suture in the direction of the pointed end is provided. One or more limbs on the anchor may be provided, which may be arcuate, of varying lengths, and of varying distribution about the periphery of the suture body. Other anchor designs are provided. Methods of placing single-directional and bi-directional barbed sutures to approximate the tissue on each side of a wound and to position and support tissue in the absence of a wound, as in cosmetic surgery, are provided, and may include terminal J-stitches or S-stitches. Methods of placement may be made with sharp, pointed ends, which may be needles, or insertion devices. Sinusoidal patterns of sutures that have amplitudes generally perpendicular to the resultant holding force of the suture are provided.
    Type: Application
    Filed: May 7, 2018
    Publication date: November 15, 2018
    Inventors: Gregory L. Ruff, Jeffrey C. Leung, JR., Andrew Kaplan, Matthew A. Megaro, Stanton D. Batchelor
  • Patent number: 9358377
    Abstract: A low-dose-rate (LDR) brachytherapy device having a spatiotemporal radiation profile includes an elongated body having a radioactive material in a spatial pattern to provide a spatial radiation profile with a radiation intensity that varies along a length of the elongated body. The radioactive material includes at least first and second radioisotopes having at least first and second respective decay profiles that together provide a temporal radiation profile that is different from the first and second decay profiles. The spatial radiation profile and the temporal radiation profile form a net spatiotemporal radiation profile configured to provide a radiotherapy plan for a patient.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: June 7, 2016
    Assignee: Civatech Onocology
    Inventors: Robert D. Black, Jeffrey C. Leung
  • Patent number: 9248580
    Abstract: A barbed suture for connecting tissue, and a combination surgical needle with a barbed suture. The suture includes an elongated body and a plurality of barbs projecting from the body. Each barb causes the suture to resist movement in an opposite direction from which the barb faces. The disposition of the barbs on the body may be staggered, twist cut multiple spiral, overlapping, or random. Also, the configuration of the barbs may be a certain spirality angle ?, barb cut angle ?, barb cut depth, barb cut length, barb cut distance, corrugated barb underside, arcuate barb base, or varying barb size.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: February 2, 2016
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Gregory L. Ruff, Matthew A. Megaro
  • Patent number: 8852232
    Abstract: A barbed suture with a first end and a second end and a body with a plurality of barbs extending from the body. Each barb causes the suture to resist movement in an opposite direction from which the barb faces. Projections extend from said suture. The projections can also engage tissue. The barbs cover the projections when the first end of the suture is moved in tissue and exposes the projections in order to engage tissue when the suture is moved in the direction of the second end through tissue.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: October 7, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Gregory L. Ruff, Matthew A. Megaro
  • Patent number: 8821540
    Abstract: A barbed suture with a first end and a second end and a body with a plurality of barbs extending from the body. Each barb causes the suture to resist movement in an opposite direction from which the barb faces. Projections extend from said suture. The projections can also engage tissue. The barbs cover the projections when the first end of the suture is moved in tissue and exposes the projections in order to engage tissue when the suture is moved in the direction of the second end through tissue.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: September 2, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Gregory L. Ruff, Matthew A. Megaro
  • Patent number: 8795332
    Abstract: A barbed suture for connecting tissue, and a combination surgical needle with a barbed suture. The suture includes an elongated body and a plurality of barbs projecting from the body. Each barb causes the suture to resist movement in an opposite direction from which the barb faces. The disposition of the barbs on the body may be staggered, twist cut multiple spiral, overlapping, or random. Also, the configuration of the barbs may be a certain spirality angle ?, barb cut angle ?, barb cut depth, barb cut length, barb cut distance, corrugated barb underside, arcuate barb base, or varying barb size.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: August 5, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Gregory L. Ruff, Matthew A. Megaro
  • Patent number: 8777989
    Abstract: Subcutaneous sinusoidal wound-closure techniques use one-way sutures. The one-way sutures have tissue-grasping surface features which allow passage of the suture in one direction through tissue, but not in the opposite direction. In closing a wound, the one-way suture is deployed along a curvilinear path which passes alternately through subcutaneous tissue on opposed sides of the wound. The wound-closure techniques allow approximation of the sides of the wound without knots, avoid loop stitching and reduce scarring.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: July 15, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Matthew A. Megaro, Gregory Ruff, Andrew Kaplan
  • Patent number: 8777988
    Abstract: Endoscopic methods utilize self-retaining sutures to approximate tissue in a cavity of a subject. An endoscopic instrument is provided containing the self-retaining suture. The endoscopic instrument may be provided in combination with an endoscope and/or an endoscopic manipulator. The endoscopic instrument is passed through a cavity wall into a cavity of a patient. The self-retaining suture is deployed, using the endoscopic instrument, into a first tissue portion and a second tissue portion within the cavity. The self-retaining suture may be deployed endoscopically in patterns which include, purse string stitch, alpha stitch, linear stitching, curvilinear stitching, continuous helical stitch, and continuous sinusoidal stitch.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: July 15, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Matthew A. Megaro, Gregory Ruff, Andrew Kaplan
  • Patent number: 8764776
    Abstract: An anastomosis procedure utilizes a self-retaining suture to secure one vessel to another vessel. One or more self-retaining sutures are deployed around the interface between the vessels. The self-retaining sutures have tissue-grasping surface features which allow passage of the sutures in one direction through tissue, but not in the opposite direction. The self-retaining sutures may be deployed using a needle attached to the end of the sutures. The anastomosis technique may be performed without using knots.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: July 1, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Matthew A. Megaro, Gregory Ruff, Andrew Kaplan
  • Patent number: 8764796
    Abstract: A method for joining and holding closed a wound in bodily tissue, fastening junctions of wounds, tying off wounds, joining a foreign element to tissue, and altering the position of tissue using a barbed suture including sharp pointed ends. Each end of the suture includes barbs on that permit movement in an opposing direction to the barbs on the other end of the suture. This two-way barbed suture is used by the method of the present invention in applications including abdominal surgeries such as a Nissen fundoplication, laparoscopic uses such as stabilizing a bowel structure and performing a closure of a cystostomy, liver to bowel anastomosis, closure of an orifice of a Zenker's Diverticulum, endoscopic uses such as closure of ulcerative lesions or and post-procedural tissue defects, bladder wound closure, valve replacement surgery, device attachment, cosmetic surgery, and blood vessel wound closure.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: July 1, 2014
    Assignee: Ethicon, Inc.
    Inventors: Andrew Kaplan, Gregory L Ruff, Jeffrey C. Leung, Matthew A. Megaro
  • Patent number: 8747437
    Abstract: Continuous wound-closure techniques use one-way suture. The one-way suture has tissue-grasping surface features which allow passage of the suture in one direction through tissue, but not in the opposite direction. In closing a wound, the one-way suture is passed alternately through tissue on opposed sides of the wound. The wound-closure techniques allow approximation of the sides of the wound without knots, avoid loop stitching and reduce scarring.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: June 10, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Matthew A. Megaro, Gregory Ruff, Andrew Kaplan
  • Patent number: 8734485
    Abstract: A barbed suture with a first end and a second end and a body with a plurality of barbs extending from the body. Each barb causes the suture to resist movement in an opposite direction from which the barb faces. Projections extend from said suture. The projections can also engage tissue. The barbs cover the projections when the first end of the suture is moved in tissue and exposes the projections in order to engage tissue when the suture is moved in the direction of the second end through tissue.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: May 27, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Gregory L. Ruff, Matthew A. Megaro
  • Patent number: 8734486
    Abstract: A suture system has a plurality of barbed sutures each with a plurality of barbs and a body connector that connects said plurality of barbed sutures. The sutures can move relative to the body connector. The body connector can retain tissue.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: May 27, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Gregory Ruff, Andrew Kaplan
  • Patent number: 8721664
    Abstract: A barbed suture including a body with barbs on the periphery, a pointed end, and an anchor at one end to resist movement of the suture in the direction of the pointed end is provided. One or more limbs on the anchor may be provided, which may be arcuate, of varying lengths, and of varying distribution about the periphery of the suture body. Other anchor designs are provided. Methods of placing single-directional and bi-directional barbed sutures to approximate the tissue on each side of a wound and to position and support tissue in the absence of a wound, as in cosmetic surgery, are provided, and may include terminal J-stitches or S-stitches. Methods of placement may be made with sharp, pointed ends, which may be needles, or insertion devices. Sinusoidal patterns of sutures that have amplitudes generally perpendicular to the resultant holding force of the suture are provided.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: May 13, 2014
    Assignee: Ethicon, Inc.
    Inventors: Gregory L. Ruff, Jeffrey C. Leung, Andrew Kaplan, Matthew A. Megaro, Stanton D. Batchelor
  • Patent number: 8721681
    Abstract: A barbed suture for connecting tissue, and a combination surgical needle with a barbed suture. The suture includes an elongated body and a plurality of barbs projecting from the body. Each barb causes the suture to resist movement in an opposite direction from which the barb faces. The disposition of the barbs on the body may be staggered, twist cut multiple spiral, overlapping, or random. Also, the configuration of the barbs may be a certain spirality angle ?, barb cut angle ?, barb cut depth, barb cut length, barb cut distance, corrugated barb underside, arcuate barb base, or varying barb size.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: May 13, 2014
    Assignee: Ethicon, Inc.
    Inventors: Gregory L. Ruff, Matthew A. Megaro, Jeffrey C. Leung
  • Patent number: 8690914
    Abstract: A suture system has a suture with a first plurality of barbs located adjacent to a first end and a second plurality of barbs located adjacent to a second end, and a body located between the first plurality of barbs and the second plurality of barbs. The body provides an anchor that can hold tissue relative to the first end and the second end of the suture. The body can slide and be positioned on said suture.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: April 8, 2014
    Assignee: Ethicon, Inc.
    Inventors: Jeffrey C. Leung, Gregory Ruff, Andrew Kaplan