Patents by Inventor Ryohei Yozu

Ryohei Yozu 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).

  • Patent number: 7041079
    Abstract: An occlusion catheter for the ascending aorta capable of obstructing the blood flow within the ascending aorta without inserting through the femoral artery. The occlusion catheter is provided with a drug release aperture formed in the region, which is closer to the proximal end of the catheter tube than a balloon on the outer circumference of the distal end and which is to be located in the vicinity of the coronary ostium when the balloon is placed within the ascending aorta. The present occlusion catheter, when inserted directly into the ascending aorta in the vicinity of the heart to obstruct the blood flow therewithin, enables delivery of a cardiac muscle protective drug to the vicinity of the coronary ostium without inserting the occlusion catheter through the femoral artery in the conventional manner.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: May 9, 2006
    Assignee: K. K. Vayu
    Inventors: Ryohei Yozu, Nobumasa Tsutsui, Takashi Kumeno
  • Publication number: 20040102734
    Abstract: An occlusion catheter for the ascending aorta capable of obstructing the blood flow within the ascending aorta without inserting through the femoral artery. The occlusion catheter is provided with a drug release aperture formed in the region, which is closer to the proximal end of the catheter tube than a balloon on the outer circumference of the distal end and which is to be located in the vicinity of the coronary ostium when the balloon is placed within the ascending aorta. The present occlusion catheter, when inserted directly into the ascending aorta in the vicinity of the heart to obstruct the blood flow therewithin, enables delivery of a cardiac muscle protective drug to the vicinity of the coronary ostium without inserting the occlusion catheter through the femoral artery in the conventional manner.
    Type: Application
    Filed: November 18, 2003
    Publication date: May 27, 2004
    Inventors: Ryohei Yozu, Nobumasa Tsutsui, Takashi Kumeno
  • Patent number: 6679861
    Abstract: An occlusion catheter for the ascending aorta capable of obstructing the blood flow within the ascending aorta without inserting through the femoral artery. The occlusion catheter is provided with a drug release aperture formed in the region, which is closer to the proximal end of the catheter tube than a balloon on the outer circumference of the distal end and which is to be located in the vicinity of the coronary ostium when the balloon is placed within the ascending aorta. The present occlusion catheter, when inserted directly into the ascending aorta in the vicinity of the heart to obstruct the blood flow therewithin, enables delivery of a cardiac muscle protective drug to the vicinity of the coronary ostium without inserting the occlusion catheter through the femoral artery in the conventional manner.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: January 20, 2004
    Assignee: K.K. Vayu
    Inventors: Ryohei Yozu, Nobumasa Tsutsui, Takashi Kumeno
  • Publication number: 20030167038
    Abstract: An occlusion catheter for the ascending aorta capable of obstructing the blood flow within the ascending aorta without inserting through the femoral artery. The occlusion catheter is provided with a drug release aperture formed in the region, which is closer to the proximal end of the catheter tube than a balloon on the outer circumference of the distal end and which is to be located in the vicinity of the coronary ostium when the balloon is placed within the ascending aorta. The present occlusion catheter, when inserted directly into the ascending aorta in the vicinity of the heart to obstruct the blood flow therewithin, enables delivery of a cardiac muscle protective drug to the vicinity of the coronary ostium without inserting the occlusion catheter through the femoral artery in the conventional manner.
    Type: Application
    Filed: April 30, 2001
    Publication date: September 4, 2003
    Inventors: Ryohei Yozu, Nobumasa Tsutsui, Takashi Kumeno
  • Patent number: 4994017
    Abstract: A circulation apparatus with a compact construction and high reliability comprising a ring-shaped support frame which has a joint which can be connected in the vascular system and turbine blades mounted on the support frame which can be rotated by a drive source, thereby attaining an easy installation thereof on the heart without exerting pressure on other organs and without causing thrombus.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: February 19, 1991
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventor: Ryohei Yozu