Patents by Inventor Wang D. Ya

Wang D. Ya 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).

  • Method of percutaneously removing a thrombus from a blood vessel by using catheters and system for removing a thrombus from a blood vessel by using catheters
    Patent number: 5059178
    Abstract: A method of percutaneously removing a thrombus from a blood vessel by using catheters and thrombus removing system for executing the method. A guide wire catheter includes a first balloon inflatable for blocking the blood vessel at a position downstream of the thrombus. A suction catheter includes a second balloon inflatable for substantially blocking the blood vessel at a position upstream of the thrombus. A thrombus dissolving agent is supplied to a position between the first and second balloons, and dissolved thrombus is drawn through the suction catheter out of the body. An expansion catheter having a third balloon is used to expand, while allowing blood flows, a location of stricture remaining after removal of the dissolved thrombus.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: October 22, 1991
    Inventor: Wang D. Ya