Patents by Inventor Yong Hua Zhu

Yong Hua Zhu 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: 8425552
    Abstract: A method and apparatus for closing a vascular wound includes a guidewire and/or other surgical implement extending from the wound. A hemostatic material is advanced over the surgical implement and into contact with an area of the blood vessel surrounding the wound. The surgical implement is removed. Blood soaks the hemostatic material, and blood clotting is facilitated by the hemostatic agent within the material. A sealing layer of adhesive can be applied to the hemostatic material, confining the blood flow to the material. The vascular puncture wound is sealed by natural blood clot formation.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: April 23, 2013
    Assignee: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Publication number: 20120143246
    Abstract: A method and apparatus for closing a vascular wound includes an apparatus that can be threaded over a guidewire into place at or adjacent the wound. The apparatus includes a chamber that encloses a hemostatic material therein. When the apparatus is positioned adjacent the wound as desired, the hemostatic material is deployed from the chamber. A blocking member distal of the hemostatic material functions as a barrier to prevent the hemostatic material from entering the wound. Blood contacts the hemostatic material, and blood clotting preferably is facilitated by a hemostatic agent within the material. Thus, the vascular puncture wound is sealed by blood clot formation.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 7, 2012
    Applicant: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Patent number: 8187627
    Abstract: A dressing delivery system comprises an applicator for holding and positioning a wound dressing. The applicator comprises a sleeve having a distal spreading portion. The wound dressing is disposed on or adjacent the spreading portion. The applicator urges the dressing into contact with the wound. The sleeve is advanced to actuate the spreading portion, which increases the diameter of the applicator and preferably deploys the dressing.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: May 29, 2012
    Assignee: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Publication number: 20120093686
    Abstract: A microfibrillar high molecular weight chitosan-based textile can be used as a hemostat. The chitosan has been treated in a nitrogen field by applying energy to ionize nitrogen in and around the chitosan textile. A single or multiple such treatments may be employed. For example, the chitosan textile may be irradiated under nitrogen using ?-irradiation, treated under a nitrogen plasma, or both.
    Type: Application
    Filed: November 24, 2010
    Publication date: April 19, 2012
    Inventors: Wolff M. Kirsch, Yong Hua Zhu, Samuel Hudson
  • Publication number: 20120059410
    Abstract: A method and apparatus for closing a vascular wound includes an apparatus that can be threaded over a guidewire into place at or adjacent the wound. The apparatus includes a chamber that encloses a hemostatic material therein. When the apparatus is positioned adjacent the wound as desired, the hemostatic material is deployed from the chamber. Blood contacts the hemostatic material, and blood clotting preferably is facilitated by a hemostatic agent within the material. Thus, the vascular puncture wound is sealed by blood clot formation.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 8, 2012
    Applicant: LOMA LINDA UNIVERSITY MEDICAL CENTER
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Patent number: 8088145
    Abstract: A method and apparatus for closing a vascular wound includes an apparatus that can be threaded over a guidewire into place at or adjacent the wound. The apparatus includes a chamber that encloses a hemostatic material therein. When the apparatus is positioned adjacent the wound as desired, the hemostatic material is deployed from the chamber. A blocking member distal of the hemostatic material functions as a barrier to prevent the hemostatic material from entering the wound. Blood contacts the hemostatic material, and blood clotting preferably is facilitated by a hemostatic agent within the material. Thus, the vascular puncture wound is sealed by blood clot formation.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: January 3, 2012
    Assignee: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Patent number: 8012167
    Abstract: A method and apparatus for closing a vascular wound includes an apparatus that can be threaded over a guidewire into place at or adjacent the wound. The apparatus includes a chamber that encloses a hemostatic material therein. When the apparatus is positioned adjacent the wound as desired, the hemostatic material is deployed from the chamber. Blood contacts the hemostatic material, and blood clotting preferably is facilitated by a hemostatic agent within the material. Thus, the vascular puncture wound is sealed by blood clot formation.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: September 6, 2011
    Assignee: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Patent number: 7931628
    Abstract: A tissue closure device has an elongate body with a first portion and a second portion. A wound closure member is also provided. In operation, a wound closure member is releasably held on a distal end of the first portion. The wound closure member is advanced within the patient until it is placed on top of and over a wound in tissue. Flowable adhesive is injected through a lume of the second portion onto the wound closure member and tissue surrounding the wound closure member. The wound closure member applicator holds the wound closure member in place, allowing the adhesive to at least partially set. The applicator is then removed from the wound closure member. Thus, an adhesive wound closure member is attached to close an opening in tissue.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: April 26, 2011
    Assignee: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Publication number: 20110046664
    Abstract: A method and apparatus for closing a vascular wound includes a guidewire and/or other surgical implement extending from the wound. A hemostatic material is advanced over the surgical implement and into contact with an area of the blood vessel surrounding the wound. The surgical implement is removed. Blood soaks the hemostatic material, and blood clotting is facilitated by the hemostatic agent within the material. A sealing layer of adhesive can be applied to the hemostatic material, confining the blood flow to the material. Thus, the vascular puncture wound is sealed by natural blood clot formation.
    Type: Application
    Filed: August 24, 2010
    Publication date: February 24, 2011
    Applicant: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Patent number: 7780699
    Abstract: A method and apparatus for closing a vascular wound includes a guidewire and/or other surgical implement extending from the wound. A hemostatic material is advanced over the surgical implement and into contact with an area of the blood vessel surrounding the wound. The surgical implement is removed. Blood soaks the hemostatic material, and blood clotting is facilitated by the hemostatic agent within the material. A sealing layer of adhesive can be applied to the hemostatic material, confining the blood flow to the material. Thus, the vascular puncture wound is sealed by natural blood clot formation.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: August 24, 2010
    Assignee: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Patent number: 7682373
    Abstract: A method and apparatus for closing a vascular wound includes a guidewire and/or other surgical implement extending from the wound. A hemostatic material is advanced over the surgical implement and into contact with an area of the blood vessel surrounding the wound. The surgical implement is removed. Blood soaks the hemostatic material, and blood clotting is facilitated by the hemostatic agent within the material. A sealing layer of adhesive can be applied to the hemostatic material, confining the blood flow to the material. Thus, the vascular puncture wound is sealed by natural blood clot formation.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: March 23, 2010
    Assignee: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Publication number: 20080142012
    Abstract: A breathing gas delivery system and method provides a flow of breathing gas to a patient. The gas flow is purposely interrupted for the patient's exhale phase in order to minimize irritation and injury to nasal tissues due to constant, uninterrupted flows. Embodiments include an oscillating ball valve that interrupts oxygen supply during the patient's exhale phase, cannula tips that are shaped to minimize trauma, and a sleep apnea treatment system that interrupts breathing gas supply during the patient's exhale phase.
    Type: Application
    Filed: July 10, 2007
    Publication date: June 19, 2008
    Inventors: Albert W. Farnsworth, Wolff M. Kirsch, Yong Hua Zhu
  • Patent number: 7316705
    Abstract: The present invention provides a device and method for safely applying cyanoacrylate or other adhesives to skin lacerations.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: January 8, 2008
    Assignee: Loma Linda University
    Inventors: Wolff Kirsch, Yong Hua Zhu, Cindy Dickson
  • Patent number: 6964675
    Abstract: An apparatus for facilitating the locating, everting, and closing of an opening in a blood vessel. The apparatus can include a closure instrument having an elongated member defining a longitudinal axis and proximal and distal ends. The elongated member has a vacuum lumen extending at least a portion of the length thereof for conveying a vacuum and terminating in a vacuum port adjacent the distal end of the elongated member. The distal end of the elongated member is dimensioned to be positioned proximal a vessel opening in a blood vessel whereby vessel edge portions defining the vessel opening are at least partially drawn toward the vacuum port in response to a vacuum conveyed through the vacuum lumen. At least one surgical clip is mounted adjacent the distal end of the elongated member and is adapted to be formed to an at least partially formed condition thereof.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: November 15, 2005
    Assignee: Loma Linda University Medical Center
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Patent number: 6890342
    Abstract: A method and apparatus for closing a vascular wound includes a guidewire and/or other surgical implement extending from the wound. A hemostatic material is advanced over the surgical implement and into contact with an area of the blood vessel surrounding the wound. The surgical implement is removed. Blood soaks the hemostatic material, and blood clotting is facilitated by the hemostatic agent within the material. A sealing layer of adhesive can be applied to the hemostatic material, confining the blood flow to the material. Thus, the vascular puncture wound is sealed by natural blood clot formation.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: May 10, 2005
    Assignee: Loma Linda University
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Patent number: 6763832
    Abstract: A nasal cannula is provided having a first and second nasal plug connected to a gas supply such as oxygen. A holder frictionally engages each nasal plug and a connector connects the two holders. The plugs are movable along the length of the connector to allow adjustment of the spacing between nasal plugs to accommodate a person's nostrils but with sufficient friction to retain the selected position. The plugs are rotatable around the longitudinal axis of the connector to adjust the orientation of the plug within a nostril relative to a patient's face, but with sufficient friction to retain the selected position. One of the connector or holder is removably fastened to the patient's face. A regulator is interposed in the gas supply to vary the flow rate and pressure to meet predetermined patterns.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: July 20, 2004
    Assignee: Loma Linda University Medical Center
    Inventors: Wolff M. Kirsch, Albert W. Farnsworth, Yong Hua Zhu
  • Publication number: 20040054346
    Abstract: A method and apparatus for closing a vascular wound includes a guidewire and/or other surgical implement extending from the wound. A hemostatic material is advanced over the surgical implement and into contact with an area of the blood vessel surrounding the wound. The surgical implement is removed. Blood soaks the hemostatic material, and blood clotting is facilitated by the hemostatic agent within the material. A sealing layer of adhesive can be applied to the hemostatic material, confining the blood flow to the material. Thus, the vascular puncture wound is sealed by natural blood clot formation.
    Type: Application
    Filed: June 16, 2003
    Publication date: March 18, 2004
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Publication number: 20040010216
    Abstract: A tissue closure device has an elongate body with a first portion and a second portion. A wound closure member is also provided. In operation, a wound closure member is releasably held on a distal end of the first portion. The wound closure member is advanced within the patient until it is placed on top of and over a wound in tissue. Flowable adhesive is injected through a lume of the second portion onto the wound closure member and tissue surrounding the wound closure member. The wound closure member applicator holds the wound closure member in place, allowing the adhesive to at least partially set. The applicator is then removed from the wound closure member. Thus, an adhesive wound closure member is attached to close an opening in tissue.
    Type: Application
    Filed: July 7, 2003
    Publication date: January 15, 2004
    Inventors: Yong Hua Zhu, Wolff M. Kirsch
  • Patent number: D477666
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: July 22, 2003
    Assignees: Tyco Healthcare Group LP, Spinnaker R&D Associates
    Inventors: Wolff M. Kirsch, Douglas J. Cuny, Roberto Pedros, Yong Hua Zhu
  • Patent number: D488228
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: April 6, 2004
    Assignees: Tyc Healthcare Group LP, Spinnaker R&D Associates
    Inventors: Wolff M. Kirsch, Douglas J. Cuny, Roberto Pedros, Yong Hua Zhu