Patents by Inventor Harold J. C. Swan

Harold J. C. Swan 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: 3995623
    Abstract: The catheter is flow-directed through the heart of the patient by a balloon on its distal end to pass through the right atrium, right ventricle and into the pulmonary artery. A through lumen in the catheter tube is open at the distal end to monitor blood pressures in the pulmonary artery or a branch, or take blood samples. A thermistor proximal to the balloon permits monitoring of blood temperature in this region and thus allows the determination of cardiac output by the thermodilution technique. A second lumen has an orifice, which is characteristically located in the region of the junction of the superior vena cava and the right atrium, for pressure monitoring, infusion of liquid media, or blood sampling. A stylet in the second lumen assists in advancing the catheter and, by means of a sudden variation in stiffness, facilitates forming a sharp bend within the right ventricle to press distal electrodes against the myocardial wall which separates the left and right ventricles.
    Type: Grant
    Filed: February 11, 1976
    Date of Patent: December 7, 1976
    Assignee: American Hospital Supply Corporation
    Inventors: Lawrence W. Blake, Clement E. Lieber, Harold J. C. Swan, William Ganz