Patents Assigned to Richard R. Rosenthal
  • Metering system for stimulating bronchial spasm
    Patent number: 4106503
    Abstract: A system for administering a metered dose of nebulized antigen tests a patient's pulmonary response. The system includes a thermistor detector for sensing initiation of patient inhalation. A variable electronic timer meters the amount of nebulized antigen introduced to the patient. Safety switching means is provided for insuring against erroneous administration of more than a single dose at a time. Separate measuring equipment is used to measure pulmonary airflow resistance which will increase in response to bronchial spasm.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: August 15, 1978
    Assignee: Richard R. Rosenthal
    Inventors: Richard R. Rosenthal, Joseph French