Patents by Inventor John Nguyen

John Nguyen 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: 20050101975
    Abstract: A clip of a self-closing type is used for valve repair. The clip is generally U-shaped with two end points separated from each other when it is constrained to be in an open configuration, but tends to coil up to assume its natural closed configuration if the constraint is removed. At least one end point is connected through a suture to a tissue-penetrating needle. A needle holder has an outer tube and an inner member which has a slit at the front and is slidable inside the outer tube. They are designed such that the slit can grab the needle tightly or release it as the inner member is moved backward or forward with respect to the outer tube. With the needle secured at the front, the needle holder is passed through a cannula inserted through an incision and the needle penetrates the leaflets such that the clip can be positioned with its end points hooked to the pair of leaflets to be stitched together.
    Type: Application
    Filed: December 7, 2004
    Publication date: May 12, 2005
    Inventors: John Nguyen, Laurent Schaller, Art Hill
  • Publication number: 20050075600
    Abstract: A surgical irrigation system is suitable for endoscopic and other surgical procedures. A hand held handpiece has a forward protruding hollow tip for supplying irrigation liquid to a surgical site, a hand actuable control for controlling irrigation liquid flow to the tip, and an irrigation liquid inlet. A self contained pumping unit is locatable adjacent a source of irrigation liquid and remote from the handpiece. The pumping unit comprises a housing containing an outlet for irrigation liquid, a pumping member for pumping irrigation liquid through the outlet, a motor for driving the pumping member, and an electric battery assembly for energizing the motor. An elongate tube connects the pumping outlet to the handpiece irrigation liquid inlet for supplying pumped irrigation liquid to the handpiece.
    Type: Application
    Filed: August 26, 2003
    Publication date: April 7, 2005
    Inventors: Charles Nelson, Heber Saravia, John Nguyen, William Pennybacker
  • Publication number: 20050075667
    Abstract: Tissue connector assemblies having at least two piercing members, each releaseably coupled to a surgical fastener such as a surgical clip. A flexible member such as a suture may be used to couple one or both piercing members to respective ends of the fastener.
    Type: Application
    Filed: August 28, 2003
    Publication date: April 7, 2005
    Inventors: Laurent Schaller, Barry Gardiner, Art Hill, John Nguyen, Liem Ho, Isidro Gandionco
  • Publication number: 20050065601
    Abstract: An annuloplasty system for repairing a valve in a patient's heart comprises a surgical implant including a member having first and second end portions. The implant member further is configured and/or adapted to form a partial ring along a portion of one of the valve annulae of a patient's heart such as the mitral or tricuspid valve annulus. The implant member is axially elastic such that it can axially expand and contract and includes first and second anchors extending from the end portions of the implant member. The anchors are adapted to anchor the implant in tissue such as the mitral or tricuspid valve annulus. The system can facilitate tissue plication (e.g., of the posterior annulus of the mitral valve or the annulus of the tricuspid valve) and reinforcement of a valve annulus.
    Type: Application
    Filed: November 10, 2004
    Publication date: March 24, 2005
    Inventors: Andrew Lee, Norman Fung, John Nguyen, Nga Doan, Laurent Schaller
  • Publication number: 20040227595
    Abstract: A suspended and truncated co-planar waveguide is described. The waveguide has a substrate with a substantially flat top surface and two lateral faces. A signal conductor and two ground conductors are placed on the top surface forming a ground-signal-ground pattern along a common plane. The waveguide has respective electrical side-wall boundaries on each of the two lateral faces of the substrate.
    Type: Application
    Filed: February 11, 2004
    Publication date: November 18, 2004
    Inventors: John A. Nguyen, Anand Gundavajhala
  • Publication number: 20040227596
    Abstract: Systems and apparatuses for providing a broadband inductor assembly. One broadband inductor assembly includes a conical coil inductor having a broad end with radius r1 and a narrow end with radius r2, the conical coil inductor also having a broad end terminal and a narrow end terminal. The broadband inductor assembly includes a base. The broadband inductor assembly includes at least one support, such that the conical coil inductor is supported by the at least one support above the base at a distance greater than or equal to r1 from the base. An ultra broadband bias tee is provided that includes a broadband inductor assembly and a DC block.
    Type: Application
    Filed: February 11, 2004
    Publication date: November 18, 2004
    Inventors: John A. Nguyen, Anand Gundavajhala
  • Publication number: 20040228069
    Abstract: Systems and apparatuses for providing a broadband capacitor assembly. One broadband capacitor assembly includes a first capacitor operable to provide a first end of an operational band of frequencies within an operational band of a broadband capacitor assembly. The broadband capacitor assembly also includes a second capacitor coupled in parallel to the first capacitor, the second capacitor operable to provide a second end of the operational band of frequencies within the operational band of the broadband capacitor assembly. A DC block can be provided including a broadband capacitor assembly.
    Type: Application
    Filed: February 11, 2004
    Publication date: November 18, 2004
    Inventors: John A. Nguyen, Anand Gundavajhala
  • Publication number: 20040181367
    Abstract: A diagnostic system combines an electronic device with a plurality of status indicators that are visible to a user. A plurality of status indicators are arranged in a map representative of the physical location of components within the electronic device.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 16, 2004
    Inventors: Minh H. Nguyen, John Nguyen, Ghassan R. Gebara, Robert Martinez
  • Publication number: 20040102797
    Abstract: Apparatus and methods for performing an anastomosis. More particularly, the apparatus may be used to perform a single or multiple anastomosis with the ability of maintaining fluid flow (e.g., blood) through the anastomosis vessel according to one aspect of the invention.
    Type: Application
    Filed: November 18, 2003
    Publication date: May 27, 2004
    Applicant: Coalescent Surgical, Inc.
    Inventors: Steve Golden, John Nguyen, Charles T. Maroney, Sid Gandionco, Laurent Schaller, Liem Ho
  • Patent number: 6695859
    Abstract: Apparatus and methods for performing an anastomosis. More particularly, the apparatus may be used to perform a single or multiple anastomosis with the ability of maintaining fluid flow (e.g., blood) through the anastomosis vessel according to one aspect of the invention.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: February 24, 2004
    Assignee: Coalescent Surgical, Inc.
    Inventors: Steve Golden, John Nguyen, Charles T. Maroney, Sid Gandionco, Laurent Schaller, Liem Ho
  • Patent number: 6641593
    Abstract: A tissue connector assembly comprising a clip movable between an open configuration and a closed configuration and a mechanical restraining device attached to the clip for restraining the clip in its open configuration. A needle may be releasably attached to the clip. A method for connecting tissues is also disclosed. The method includes inserting a clip through tissue with the clip being biased in an open position by a restraining device secured to the clip, and removing the restraining device from the clip.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: November 4, 2003
    Assignee: Coalescent Surgical, Inc.
    Inventors: Laurent Schaller, Charles T. Maroney, Phillip Drews, Isidro Matias Gandionco, John Nguyen
  • Publication number: 20030195531
    Abstract: A tissue connector assembly having a flexible member and a surgical clip releasably coupled to the flexible member. A needle may be secured to one end portion of the flexible member with the surgical clip coupled to the other end portion of the flexible member. A locking device may be used to couple the flexible member to the surgical clip. A method for connecting tissues is also disclosed. The method includes drawing tissue portions together with a clip assembly and securing the tissue portions together with the clip assembly.
    Type: Application
    Filed: May 16, 2003
    Publication date: October 16, 2003
    Inventors: Barry Gardiner, Laurent Schaller, Isidro Matias Gandionco, John Nguyen
  • Publication number: 20030191481
    Abstract: A surgical fastener comprising a clip movable between an open configuration and a closed configuration and a biasing member contacting the clip and biasing the clip to its open configuration when the biasing member is actuated. The biasing member and clip both tend to assume the closed configuration when no external forces are applied to them. A needle may be releasably attached to the clip. Methods for making the fasteners are also disclosed, in which both the clip and the biasing member are set in the closed position.
    Type: Application
    Filed: April 3, 2003
    Publication date: October 9, 2003
    Inventors: John Nguyen, Nga T. Doan, Laurent Schaller
  • Patent number: 6623445
    Abstract: A surgical irrigation system is suitable for endoscopic and other surgical procedures. A hand held handpiece has a forward protruding hollow tip for supplying irrigation liquid to a surgical site, a hand actuable control for controlling irrigation liquid flow to the tip, and an irrigation liquid inlet. A self contained pumping unit is locatable adjacent a source of irrigation liquid and remote from the handpiece. The pumping unit comprises a housing containing an outlet for irrigation liquid, a pumping member for pumping irrigation liquid through the outlet, a motor for driving the pumping member, and an electric battery assembly for energizing the motor. An elongate tube connects the pumping outlet to the handpiece irrigation liquid inlet for supplying pumped irrigation liquid to the handpiece.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: September 23, 2003
    Assignee: Stryker Corporation
    Inventors: Charles L. Nelson, Heber Saravia, John Nguyen, William P. Pennybacker
  • Patent number: 6613059
    Abstract: Tissue connector assemblies having at least two piercing members, each releaseably coupled to a surgical fastener such as a surgical clip. A flexible member such as a suture may be used to couple one or both piercing members to respective ends of the fastener.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: September 2, 2003
    Assignee: Coalescent Surgical, Inc.
    Inventors: Laurent Schaller, Barry Gardiner, Art Hill, John Nguyen, Liem Ho, Isidro Matias Gandionco
  • Patent number: 6607541
    Abstract: A tissue connector assembly having a flexible member and a surgical clip releasably coupled to the flexible member. A needle may be secured to one end portion of the flexible member with the surgical clip coupled to the other end portion of the flexible member. A locking device may be used to couple the flexible member to the surgical clip. A method for connecting tissues is also disclosed. The method includes drawing tissue portions together with a clip assembly and securing the tissue portions together with the clip assembly.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: August 19, 2003
    Assignee: Coalescent Surgical, Inc.
    Inventors: Barry Gardiner, Laurent Schaller, Isidro Matias Gandionco, John Nguyen
  • Publication number: 20030125755
    Abstract: A tissue connector assembly comprising a clip movable between an open configuration and a closed configuration and a mechanical restraining device attached to the clip for restraining the clip in its open configuration. A needle may be releasably attached to the clip. A method for connecting tissues is also disclosed. The method includes inserting a clip through tissue with the clip being biased in an open position by a restraining device secured to the clip, and removing the restraining device from the clip.
    Type: Application
    Filed: February 10, 2003
    Publication date: July 3, 2003
    Inventors: Laurent Schaller, Charles T. Maroney, Phillip Drews, Isidro Matias Gandionco, John Nguyen
  • Publication number: 20030097372
    Abstract: A method and system for managing electrical schematic data has been disclosed. The method includes the step of generating three separate schematics for an electrical part, a logical schematic, a layout schematic, and a physical schematic. These schematics are then stored together in part master file such that they may not be independently retrieved from a computer network. A computer utility manages the master file such that only one user may modify the part master file at a time. Additionally, the computer utility tracks all of the modifications to the part master file and saves all versions and revisions. If a change has been made to a part master file that would affect a second part master file, users will automatically be notified by the computer utility that a change has been made.
    Type: Application
    Filed: November 20, 2002
    Publication date: May 22, 2003
    Inventors: Cynthia Bertini, John Nguyen
  • Publication number: 20030078603
    Abstract: Tissue connector assemblies having at least two piercing members, each releaseably coupled to a surgical fastener such as a surgical clip. A flexible member such as a suture may be used to couple one or both piercing members to respective ends of the fastener.
    Type: Application
    Filed: July 29, 2002
    Publication date: April 24, 2003
    Applicant: Coalescent Surgical, Inc.
    Inventors: Laurent Schaller, Barry Gardiner, Art Hill, John Nguyen, Liem Ho, Isidro Matias Gandionco
  • Patent number: 6551332
    Abstract: A surgical fastener comprising a clip movable between an open configuration and a closed configuration and a biasing member contacting the clip and biasing the clip to its open configuration when the biasing member is actuated. The biasing member and clip both tend to assume the closed configuration when no external forces are applied to them. A needle may be releasably attached to the clip. Methods for making the fasteners are also disclosed, in which both the clip and the biasing member are set in the closed position.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: April 22, 2003
    Assignee: Coalescent Surgical, Inc.
    Inventors: John Nguyen, Nga T. Doan, Laurent Schaller