Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1991-11-04
1993-02-23
Grieb, William H.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
A61M 1600
Patent
active
051880989
ABSTRACT:
Method and apparatus for maximizing the volume of blood pumped by a heart and maximizing ventilation/perfusion matching in the lungs, wherein the lungs are ventilated by a respirator in response to a control signal, are shown to include a series of monitors for generating a heart signal such as an electrocardiogram, a lung air flow rate signal and a lung air pressure signal and a controller, connected to receive these signals and to the respirator. The controller monitors the signals and generates the control signal when the heart signal is representative of a desired in point in the pumping cycle of the heart and the other signals indicate desired flow rate and pressure in the lungs. In a preferred embodiment, the control signal is generated so as to maximize the augmentation of the pumping of the heart and to minimize the trapping of air in the lungs. Using the present invention, blood being pumped from the heart is assisted by the ventilation of the lungs. It is preferred for the controller to include a series of threshold detectors for detecting when the signals exceed threshold levels. It is especially preferred for the detector to detect a point during ventricular contraction. It is especially preferred for the apparatus to further include a delay mechanism, interposed between the respirator and the controller, for delaying the control signal.
REFERENCES:
patent: 4461293 (1984-07-01), Chen
patent: 4519387 (1985-05-01), Durkan et al.
patent: 4535766 (1985-08-01), Baum
patent: 4982735 (1991-01-01), Yagata et al.
patent: 5005570 (1991-04-01), Perkins
patent: 5016626 (1991-05-01), Jones
patent: 5044362 (1991-09-01), Younes
patent: 5107831 (1992-04-01), Halpern et al.
patent: 5129390 (1992-07-01), Chopin et al.
M. R. Pinsky, et al., "Determinants of Cardiac Augumentation By Elevations In Intrathoracic Pressure", Journal of Applied Physiology, vol. 58(4) pp. 1189-1198 (1985).
M. R. Pinsky, et al., "Hemodynamic Effects Of Cardiac Cycle-Specific Increases In Intrathoracic Pressure", Journal of Applied Physiology, vol. 60(2) pp. 604-612 (1986).
Hanson, III C. William
Hoffman Eric A.
Grieb William H.
The Trustees of the University of Pennsylvania
LandOfFree
Method and apparatus for ECG gated ventilation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for ECG gated ventilation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for ECG gated ventilation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2198012