Patents by Inventor Nai-Kuan Chou

Nai-Kuan Chou 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).

  • Preventing vascular stenosis of cardiovascular stent
    Patent number: 8858615
    Abstract: A novel cardiovascular stent for preventing vascular stenosis is disclosed. The basic components of the cardiovascular stent of the present invention include V-shape rib unit, multi-link unit and connective ring unit. In addition, each ring rib part is formed by a plurality of double V-shape rib units that are connected together via the bridging portions of the multi-link units. Also, each connective part comprises a plurality of connective ring units. The integrally formed stent of the present invention is formed with the ring rib parts that are connected together by the connective parts.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: October 14, 2014
    Assignees: National Taiwan University, National Taipei University of Technology
    Inventors: Cheng-Shun Chen, Yih-Sharng Chen, Nai-Kuan Chou, Hsi-Yu Yu, Sheng-Yao Lin
  • Method for evaluation of renal vascular perfusion using power doppler ultrasonography
    Patent number: 8777860
    Abstract: A method for evaluation of renal perfusion with power Doppler ultrasonography is disclosed in the present invention. Serial renal vascular images at different vascular areas including the whole vascular tree, interlobar, arcuate, and interlobular vessels were captured. Imaging processing software was designed to analyze the changes of power Doppler intensity of colored pixels within regions of interest (ROI). Power Doppler Vascularity index (PDVI) has been defined as the percentage of vascular perfusion within a region of interest (ROI). The renal vascular perfusion index (RVPI) is defined as the maximal power Doppler vascular index divided by minimal power Doppler vascular index (PDVImax/PDVImin) among the serial images. The mean of weighted power Doppler vascular index (WPDVImean) is defined as the average of the intensity of color pixels among the ROI within the serial images.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: July 15, 2014
    Assignee: National Taiwan University
    Inventors: Jeou-Jong Shyu, Sun-Hua Pao, Yio-Wha Shau, Shuo-Meng Wang, Nai-Kuan Chou
  • Preventing Vascular Stenosis of Cardiovascular Stent
    Publication number: 20110288631
    Abstract: A novel cardiovascular stent for preventing vascular stenosis is disclosed. The basic components of the cardiovascular stent of the present invention include V-shape rib unit, multi-link unit and connective ring unit. In addition, each ring rib part is formed by a plurality of double V-shape rib units that are connected together via the bridging portions of the multi-link units. Also, each connective part comprises a plurality of connective ring units. The integrally formed stent of the present invention is formed with the ring rib parts that are connected together by the connective parts.
    Type: Application
    Filed: May 19, 2010
    Publication date: November 24, 2011
    Applicants: NATIONAL TAIPEI UNIVERSITY OF TECHNOLOGY, NATIONAL TAIWAN UNIVERSITY
    Inventors: Cheng-Shun Chen, Yih-Sharng Chen, Nai-Kuan Chou, Hsi-Yu Yu, Sheng-Yao Lin
  • METHOD FOR EVALUATION OF RENAL VASCULAR PERFUSION USING POWER DOPPLER ULTRASONOGRAPHY
    Publication number: 20100274134
    Abstract: A method for evaluation of renal perfusion with power Doppler ultrasonography is disclosed in the present invention. Serial renal vascular images at different vascular areas including the whole vascular tree, interlobar, arcuate, and interlobular vessels were captured. Imaging processing software was designed to analyze the changes of power Doppler intensity of colored pixels within regions of interest (ROI). Power Doppler Vascularity index (PDVI) has been defined as the percentage of vascular perfusion within a region of interest (ROI). The renal vascular perfusion index (RVPI) is defined as the maximal power Doppler vascular index divided by minimal power Doppler vascular index (PDVImax/PDVImin) among the serial images. The mean of weighted power Doppler vascular index (WPDVImean) is defined as the average of the intensity of color pixels among the ROI within the serial images.
    Type: Application
    Filed: December 23, 2009
    Publication date: October 28, 2010
    Applicant: NATIONAL TAIWAN UNIVERSITY
    Inventors: Jeou-Jong Shyu, Sun-Hua Pao, Yio-Wha Shau, Shuo-Meng Wang, Nai-Kuan Chou