Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1984-02-27
1986-07-08
Recla, Henry J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820523, A61M 1600
Patent
active
045987068
ABSTRACT:
An apparatus for controlling and dividing ventilation between lungs during their independent ventilation and connecting only one respirator with the lungs by means of a double-lumen bronchial tube. The apparatus comprises two parallel inspiratory paths and two parallel expiratory paths to separate gas flows between the respiratory and each of the lungs. Each path is connected to the double-lumen bronchial tube through inspiratory and expiratory branches respectively. One of the expiratory paths comprises a positive end-expiratory pressure valve to apply this pressure selectively, to one lung only. A threshold inspiratory valve is placed in one of the inspiratory paths having a common point with the expiratory path not containing the positive end-expiratory pressure valve. This threshold valve is connected in series with a pneumatic unidirectional valve and divides ventilation between the lungs and patterns optimal inspiratory flows. Pneumatic unidirectional valves are situated in both inspiratory and expiratory paths to prevent mixing of gases flowing through these paths.
REFERENCES:
patent: 4233984 (1980-11-01), Walling
Hedenstierna et al., "Practical Aspects of Differential Ventilation with ective PEEP in Acute Respiratory Failure", International Journal of Clinical Monitoring and Computing (1984), Martinus Nijhoff Publishers, pp. 5-11.
Brown et al., "Improved Ventilation During Thoracotomy with Selective PEEP to the Dependent Lung", Anesthesia and Analgesia, vol. 56, No. 1, (1977), pp. 26-31.
Darowski et al., "Development and Evaluation of a Flow-Dividing Unit for Differential Ventilation and Selective PEEP", Acta Anesthesiol Scand. 1985, vol. 29, pp. 61-66.
Darowski et al., "A New Control System for Differential Ventilation of the Lungs", Int'l Symposium on Fluid Control and Measurement, Tokyo, 1985, pp. 1-9.
S. Bachrendtz et al: "Differential Ventilation in Acute Bilateral Lung Disease. Influence on Gas Exchange and Central Haemodynamics", Acta Anaesth. Scand. 1983.
N. L. Pace et al.: "Differential Lung Ventilation after Unilateral Hydrochloric Acid Aspiration in the Dog", Critical Care Medicine, vol. 11, No. 1, 1983.
C. P. Dodols et al; "Management of Massive Air Leak with Asynchronous Independent Lung Ventilation", Intensive Care Medicine, 8, 1382.
Darowski Marek
Hedenstierna Goran
Polska Akademia Nauk Instytut Biocybernetyki i Inzynierii Biomed
Recla Henry J.
LandOfFree
Apparatus for independent ventilation of two lungs with selectiv does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for independent ventilation of two lungs with selectiv, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for independent ventilation of two lungs with selectiv will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1446370