Patents by Inventor Cu N. Phan

Cu N. Phan 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: 5271379
    Abstract: An actuator (2) is used for actuating an auxiliary endoscopic device, such as an irrigation syringe (4), a pronged forcep (98) or a flexible stone-capturing basket (86). The auxiliary endoscopic device has a stationary portion (46) and a portion (62) which moves relative to the stationary portion. The actuator includes a foot pedal assembly (6) having a movable part (14) and a stationary part (12), a housing (8) and a coaxial cable (10). The coaxial cable includes an inner wire (30) and an outer tube (22) fixed at its ends (24, 26) to the movable part of the foot pedal assembly and to the housing. The stationary portion of the auxiliary endoscopic device is secured to the housing while the movable portion is connected to one end of the wire, the other end of the wire being connected to the stationary part of the foot pedal assembly.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: December 21, 1993
    Assignee: The Regents of the University of California
    Inventors: Cu N. Phan, Marshall L. Stoller
  • Patent number: 5257832
    Abstract: The invention relates generally to connecting tubes for medical use. A connector (1) having a conical hollow body (2) and a pierceable sealing diaphragm (10) is attached to a flexible tail portion (12) comprised of two co-operating adhesive-coated strips (24/26). The adhesive on inner surfaces (20) of the strips is protected by peel-away coverings (14) prior to use. In use, a medical tube (16) is introduced into the body through an end (6) and through the sealing diaphragm. The adhesive strips contact the tube to further secure it to the body. Another device, such as a second tube or a drainage bag, connects to the other end (4) of the body.
    Type: Grant
    Filed: May 7, 1992
    Date of Patent: November 2, 1993
    Assignee: The Regents of the University of California
    Inventors: Cu N. Phan, Marshall L. Stoller
  • Patent number: 5234443
    Abstract: A suture applying and tying device comprises at least one grasping device for securing a length of suture, a second grasping device for forming a loop in a length of the suture, and a pushing rod for advancing the loop towards tissue.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: August 10, 1993
    Assignee: The Regents of the University of California
    Inventors: Cu N. Phan, Marshall L. Stoller
  • Patent number: 5192286
    Abstract: A retrieval catheter (10) for removing deleterious materials (S) from body lumens has an elongate catheter body (12) having a slack net (26) at its distal end (16). The slack net may be collapsed to facilitate introduction into the body lumen and opened in situ to permit capture and retrieval of the deleterious materials. A method for removing ureteral stones from the ureter is described.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: March 9, 1993
    Assignee: Regents of the University of California
    Inventors: Cu N. Phan, Marshall L. Stoller
  • Patent number: 5129910
    Abstract: A stent of the present invention includes a tubular body having a helical-like ridge along at least a portion of its outer wall for expelling masses within a body passage. The helical-like ridge includes a smooth, convex superior surface having a beveled central portion, and a concave inferior surface.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: July 14, 1992
    Assignee: The Regents of the University of California
    Inventors: Cu N. Phan, Marshall L. Stoller