Surgery – Truss – Pad
Patent
1977-02-02
1979-05-22
Recla, Henry J.
Surgery
Truss
Pad
128184, 128 38, A61M 1600
Patent
active
041553560
ABSTRACT:
Process and apparatus for assisting expiration of respiratory gas from the lungs and/or assisting pulmonary blood circulation. The apparatus comprises means for generating a series of pressure pulses and means for transmitting the pressure pulses to air passageways in the lungs through respiratory gas. The generating means can comprise a solenoid controlled pump, a solenoid controlled valve, or a reflector means for directing pulses into the lungs. The transmitting means preferable comprises a tube for placement in the trachea. The frequency, amplitude, and shape of the pressure waves are controlled to outwardly displace walls of collapsed air passageways in the lungs, to maintain the outward displacement, and to generate a pumping action to assist in respiration. Wave characteristics may be controlled manually or modulated by signals derived from an electrocardiogram and/or a pleural pressure sensing means.
REFERENCES:
patent: 2918917 (1959-12-01), Emerson
patent: 3349766 (1967-10-01), Donofrio
patent: 3863082 (1975-01-01), Gillott et al.
patent: 3923055 (1975-12-01), Hammacher
patent: 3993059 (1976-11-01), Sjostrand
Weinstein, "A Method for Re-expansion of the Collapsed Lung" in Early or Late Empyema, Aug. 1936, vol. 28, #3, Industrial Engr.
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