Method and apparatus for detecting respiratory distress
Patent 4422458 Issued on December 27, 1983. Estimated Expiration Date: 
December 1, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 1, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3212496 3572317 3587562 Respiration monitor Apparatus for correlating the respiratory and cardiac cycles Respiration monitoring method and apparatus including cardio-vascular artifact detection Patent #: 4305400 InventorAssigneeApplicationNo. 06/326176 filed on 12/01/1981US Classes:600/484, Detecting respiratory condition600/509, Detecting heartbeat electric signal600/536Detector responsive to movement induced variation in impedance of body to electric currentExaminersPrimary: Howell, Kyle L.Assistant: Hanley, John C. Attorney, Agent or FirmInternational ClassesA61B 5/08 (20060101)A61B 5/0456 (20060101) A61B 5/0452 (20060101) G06F 17/00 (20060101) AbstractA method and apparatus for detecting respiratory distress is disclosed wherein the increasing force of contraction of the heart, which occurs during a respiratory distress condition is detected and utilized to signal the condition. More particularly, the increasing force of contraction of a patient's heart, which affects the electrical signal generated by an impedance pneumograph may be detected by utilizing the heart beat of the patient to generate a trigger pulse. The trigger pulse is used as a timing means to enable the effects of the heart as registered on the impedance pneumograph, to be detected and compared, with an increase in amplitude of the contractions of the heart indicating a respiratory failure. | |
