Patents by Inventor Khang Trong Dinh

Khang Trong Dinh 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).

  • Insertion indicator for needle
    Patent number: 8608697
    Abstract: A method and apparatus are provided for a fluid level insertion indicator that provides immediate feedback to a surgeon by draining when a tip of a needle has entered a body lumen, such as peritoneal cavity. An apparatus includes a handle connected to a hollow needle and a hollow stylet that extends through the hollow needle and has a blunt distal end that includes an opening for passing fluid. A spring biases the stylet to extend past the sharp distal end of the needle absent resistance by tissue against the stylet. An at least partially translucent pressure chamber configured to hold a quantity of fluid under pressure is connected to the proximal end of the stylet. The pressure chamber and stylet form a conduit for passing fluid through the opening in the blunt distal end when the stylet extends past the sharp distal end of the hollow needle.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: December 17, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Pelu Tran, Khang Trong Dinh, Andrew Pipathsouk, Benjamin Chung, Hongbin Li
  • Insertion Indicator for Needle
    Publication number: 20110218485
    Abstract: A method and apparatus are provided for a fluid level insertion indicator that provides immediate feedback to a surgeon by draining when a tip of a needle has entered a body lumen, such as peritoneal cavity. An apparatus includes a handle connected to a hollow needle and a hollow stylet that extends through the hollow needle and has a blunt distal end that includes an opening for passing fluid. A spring biases the stylet to extend past the sharp distal end of the needle absent resistance by tissue against the stylet. An at least partially translucent pressure chamber configured to hold a quantity of fluid under pressure is connected to the proximal end of the stylet. The pressure chamber and stylet form a conduit for passing fluid through the opening in the blunt distal end when the stylet extends past the sharp distal end of the hollow needle.
    Type: Application
    Filed: March 4, 2011
    Publication date: September 8, 2011
    Applicant: STANFORD UNIVERSITY
    Inventors: Pelu Tran, Khang Trong Dinh, Andrew Pipathsouk, Benjamin Chung, Hongbin Li