Patents by Inventor Gilbert H. Johnson

Gilbert H. Johnson 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 SENSING AND SENSING CANNULA FOR USE DURING CARDIAC SURGERY
    Publication number: 20200164133
    Abstract: The method and system of the present invention detects cellular electrical activity and/or temperature continuously in real time to indicate the level of cellular arrest in the myocardial and conductive cells, allowing for the adjustment of cardioplegia, temperature, and/or increasing or decreasing the ratio of blood to electrolytes (cardioplegia) in order to eliminate or minimize myocardial ischemia that occurs when cellular arrest is not obtained or maintained during cardiac surgery. In a preferred embodiment of the present invention, a conductive wire and/or a thermistor are imbedded in or on the walls of a retrograde and/or other cannula to detect low amplitude electrical activity and/or temperature, respectively. In an alternate preferred embodiment of the present invention sensors for electrolyte, pO2, pCO2, or cardiac enzymes could also be added or used in replacement of other sensors.
    Type: Application
    Filed: July 8, 2019
    Publication date: May 28, 2020
    Inventors: Gilbert H. Johnson, Claude Brandeau
  • Variable ratio blood-additive solution device and delivery system
    Patent number: 5573505
    Abstract: A method and apparatus for delivering on command any ratio of blood to blood-additive solution of a blood/solution mixture during cardio vascular and cardiac perfusion procedures and more particularly to intermittently and/or continuously delivering on command any ratio of blood to cardioplegia solution of a blood/cardioplegia mixture during cardiac surgery.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: November 12, 1996
    Inventors: Gilbert H. Johnson, Stephen R. Straus, Joseph D. Giordano
  • Variable ratio blood-additive solution device and delivery system
    Patent number: 5322500
    Abstract: A variable ratio, blood-additive solution, mixing device and delivery system that permits the varying of the ratio of blood to solution from either all blood to pure solution and any ratio of the two, either continuously or intermittently, prior to or during cardiovascular and cardiac perfusion procedures, particularly warm or cold cardioplegia procedures for open heart surgery.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: June 21, 1994
    Assignee: Cardio Pulmonary Supplies, Inc.
    Inventors: Gilbert H. Johnson, Stephen R. Straus, Joseph D. Giordano
  • Control arrangement for a damper
    Patent number: 4237932
    Abstract: A damper control arrangement wherein a damper blade opens and closes a flow-through orifice in response to selective moving means, the selective moving means moving the damper blade a preselected distance from the orifice opening to vary the opening of the orifice for a predetermined period of time prior to moving the damper blade to a fully open position.
    Type: Grant
    Filed: July 13, 1979
    Date of Patent: December 9, 1980
    Assignee: American Air Filter Company, Inc.
    Inventor: Gilbert H. Johnson