Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1979-11-28
1982-03-09
Recla, Henry J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820222, 12820524, A61M 1600
Patent
active
043183999
ABSTRACT:
Respirators work cyclically with an inspiration phase, in which breathing gas is forced into the lungs of a patient, followed by an expiration phase, in which the supply of breathing gas to the patient is stopped and the patient is exhaling by himself. There is a risk that the patient will have difficulty exhaling. In this case the lung pressure of the patient will be too high unless the gas supply is interrupted at the start of the next following inspiration phase. In order to detect too high lung pressure and to provide such interruption, a pressure sensor is arranged to sense the gas pressure in a gas line connected to the breathing catheter introduced into the lung of the patient. This pressure sensor will normally detect a higher pressure during the inspiration phase than during the expiration phase. Therefore, an operating circuit is arranged to sense the state of the pressure sensor in a predetermined phase position only during the expiration phase. When this circuit detects an overpressure in the predetermined position, it feeds an inhibiting signal to the respirator to prevent the commencement of a subsequent inspiration phase.
REFERENCES:
patent: 3333584 (1967-08-01), Andreasen et al.
patent: 3566387 (1971-02-01), Schoener et al.
patent: 3877467 (1975-04-01), Plicchi
patent: 3903881 (1975-09-01), Weigl
patent: 4096858 (1978-06-01), Eyrick et al.
patent: 4141354 (1979-02-01), Ismach
patent: 4206754 (1980-06-01), Cox et al.
AGA Aktiebolag
Recla Henry J.
LandOfFree
Respirator apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Respirator apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Respirator apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1836975