Patents by Inventor G. David Jang

G. David Jang 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).

  • Concentric independently inflatable/deflatable multiple diameter balloon angioplasty catheter systems and method of use
    Patent number: 4744366
    Abstract: Disclosed is a catheter for performing balloon angioplasty comprising concentric, independently inflatable/deflatable balloons, each balloon having a different diameter. The balloons are capable of withstanding pressures in excess of 100 psi and are non-elastomeric and imperforate. Also disclosed is a method for performing balloon angioplasty by advancing a balloon catheter of the type disclosed into a stenosis inside a blood vessel, inflating a first balloon to partially dilate the stenosis, advancing a second balloon into the partially dilated stenosis, wherein the diameter of the second balloon is greater than the diameter of the first balloon, and inflating the second balloon to further dilate the stenosis.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: May 17, 1988
    Inventor: G. David Jang