Patents by Inventor Rollin H. Denniston, III

Rollin H. Denniston, III 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).

  • Cardioverting device having single intravascular catheter electrode system and method for its use
    Patent number: 3942536
    Abstract: Apparatus and method for either manually or automatically initiating the cardioversion of a malfunctioning heart. The apparatus includes a single intravascular catheter electrode system which allows for a much more compact cardioverting system capable of being completely implanted within the patient. The heart function is continuously monitored, and when the function becomes abnormal, the malfunctioning heart is shocked by a voltage of sufficient amplitude to restore the heart to normalcy. If the heart does not return to its normal functions after a given interval, then it is again shocked. Normal heart activity ensures that the shocking mechanism remains inert.
    Type: Grant
    Filed: September 19, 1973
    Date of Patent: March 9, 1976
    Assignee: Mieczyslaw Mirowski
    Inventors: Mieczyslaw Mirowski, Morton M. Mower, Rollin H. Denniston, III
  • Automatic cardioverting circuit
    Patent number: RE30372
    Abstract: Pulse generating apparatus which provides electrical heart-stimulating pulses only in the absence of normal heart activity. If the patient's heart has developed a life threatening arrhythmic condition the inventive apparatus automatically applies an electrical shock to the heart having sufficient magnitude to restore normal heart activity. The inventive apparatus features a redundant heartbeat sensing system which monitors two dynamic characteristics of heart function, for example, heart contraction and EKG. An electrical heart stimulating pulse is delivered to the patient's heart following the elapse of a specified period of time since the sensing of a dynamic characteristic indicative of a normal functional heart. Sensing control is automatically regained following successful heart stimulation, thereby inhibiting the application of further electrical pulses.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: August 19, 1980
    Assignee: Medtronic, Inc.
    Inventors: Mieczyslaw Mirowski, Rollin H. Denniston, III, Thomas E. Davis
  • Automatic cardioverting circuit
    Patent number: RE30387
    Abstract: Pulse generating apparatus which provides electrical heart-stimulating pulses only in the absence of normal heart activity. If the patient's heart has developed a life threatening arrhythmic condition the inventive apparatus automatically applies an electrical shock to the heart having sufficient magnitude to restore normal heart activity. The inventive apparatus features a redundant heartbeat sensing system which monitors two dynamic characteristics of heart function, for example, heart contraction and EKG. An electrical heart stimulating pulse is delivered to the patient's heart following the elapse of a specified period of time since the sensing of a dynamic characteristic indicative of a normal functional heart. Sensing control is automatically regained following successful heart stimulation, thereby inhibiting the application of further electrical pulses.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: August 26, 1980
    Assignee: Medtronic, Inc.
    Inventors: Rollin H. Denniston, III, Thomas E. Davis