High frequency ventillator

Details High frequency ventillator High frequency ventillator

1981-07-06

1983-10-18

Recla, Henry J.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820514, 12820421, 417394, 417478, A61M 1600

Patent

active

044099770

ABSTRACT:
High frequency medical breathing apparatus is provided, which delivers efficiently controlled high frequency air pulses to a catheter, and which is of relatively low cost and is energized by pressured air that is commonly available in a hospital environment. The apparatus includes a large flexible bag with entrance and exit openings, walls forming a sealed chamber around the bag, and a source that applies pressure pulses to the chamber to partially compress the bag at each pulse so as to deliver air through the exit end of the bag and a check valve, and into a catheter that leads to a patient's lungs.

REFERENCES:
patent: 3682166 (1972-08-01), Jacobs
patent: 3964476 (1976-06-01), Palleni
patent: 3993059 (1976-11-01), Sjostrand
patent: 4212589 (1980-07-01), Bosio
patent: 4215681 (1980-08-01), Zalkin et al.
patent: 4265237 (1981-05-01), Schwanbom et al.
patent: 4270530 (1981-06-01), Baum et al.
"Effective Pulmonary Ventilation with Small-Volume Oscillations at High Frequency", Science, vol. 209, Aug. 1980.
"High Frequency Percutaneous Transtracheal Jet Ventilation", By-M. Klain, MD. and R. Brian Smith, MD. Critical Care Medicine Copyright, 1977, vol. 5, No. 6.
Smith et al., "Percutaneous Transtracheal Ventilation", JACEP Oct. 1976, vol. 5, No. 10, pp. 765-770.

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