Patents by Inventor John Michael Henderson

John Michael Henderson 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).

  • Intravascular system for occluded blood vessels and guidewire for use therein
    Patent number: 6936056
    Abstract: A system and method for opening a lumen in an occluded blood vessel, e.g., a coronary bypass graft, of a living being. The system comprises an atherectomy catheter having a working head, e.g., a rotary impacting impeller, and a debris extraction sub-system. The atherectomy catheter is located within a guide catheter. The working head is arranged to operate on, e.g., impact, the occlusive material in the occluded vessel to open a lumen therein, whereupon some debris may be produced. The debris extraction sub-system introduces an infusate liquid at a first flow rate adjacent the working head and withdraws that liquid and some blood at a second and higher flow rate, through the guide catheter to create a differential flow adjacent the working head, whereupon the debris is withdrawn in the infusate liquid and blood for collection outside the being's body.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: August 30, 2005
    Assignee: Kensey Nash Corporation
    Inventors: John E. Nash, William T. Fisher, Charles W. Dodson, Jr., John Michael Henderson, Joseph W. Kaufmann
  • System and method of use for revascularizing stenotic bypass grafts and other occluded blood vessels
    Patent number: 6652546
    Abstract: A system and method for opening a lumen in an occluded blood vessel, e.g., a coronary bypass graft, of a living being. The system comprises an atherectomy catheter having a working head, e.g., a rotary impacting impeller, and a debris extraction sub-system. The atherectomy catheter is located within a guide catheter. The working head is arranged to operate on, e.g., impact, the occlusive material in the occluded vessel to open a lumen therein, whereupon some debris may be produced. The debris extraction sub-system introduces an infusate liquid at a first flow rate adjacent the working head and withdraws that liquid and some blood at a second and higher flow rate, through the guide catheter to create a differential flow adjacent the working head, whereupon the debris is withdrawn in the infusate liquid and blood for collection outside the being's body.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: November 25, 2003
    Assignee: Kensey Nash Corporation
    Inventors: John E. Nash, William T. Fisher, Charles W. Dodson, Jr., John Michael Henderson, Joseph W. Kaufmann
  • Intravascular system for occluded blood vessels and guidewire for use therein
    Publication number: 20030114869
    Abstract: A system and method for opening a lumen in an occluded blood vessel, e.g., a coronary bypass graft, of a living being. The system comprises an atherectomy catheter having a working head, e.g., a rotary impacting impeller, and a debris extraction sub-system. The atherectomy catheter is located within a guide catheter. The working head is arranged to operate on, e.g., impact, the occlusive material in the occluded vessel to open a lumen therein, whereupon some debris may be produced. The debris extraction sub-system introduces an infusate liquid at a first flow rate adjacent the working head and withdraws that liquid and some blood at a second and higher flow rate, through the guide catheter to create a differential flow adjacent the working head, whereupon the debris is withdrawn in the infusate liquid and blood for collection outside the being's body.
    Type: Application
    Filed: January 31, 2003
    Publication date: June 19, 2003
    Applicant: Kensey Nash Corporation
    Inventors: John E. Nash, William T. Fisher, Charles W. Dodson, John Michael Henderson, Joseph W. Kaufmann