Surgery – Truss – Pad
Patent
1993-02-05
1994-07-26
Cohen, Lee S.
Surgery
Truss
Pad
12820714, A61B 508
Patent
active
053319672
ABSTRACT:
A method and apparatus for monitoring and indicating whether a tracheal tube is located in the trachea or esophagus during an endotracheal intubation of a human or animal is disclosed. In a calibration mode, the resonant frequency of the tube is determined by generating a signal at a plurality of frequencies and finding the signal which propagates with the greatest amplitude. This :indicates the resonant frequency. When the tube is inserted into the patient, the resonant frequency of the system shifts, thus the amplitude of the signal changes. Based on known characteristics of the trachea and esophagus, the amount of change is dictated by whether the tube has been inserted into the trachea or esophagus. Alternatively, the device can continually determine the resonant frequency and use this to monitor the level of liquid in a tank.
REFERENCES:
patent: 2584128 (1952-02-01), Hildyard
patent: 2932818 (1960-04-01), Lubkin
patent: 2990543 (1961-06-01), Rod
patent: 3050720 (1962-08-01), Rich
patent: 3572119 (1969-08-01), Bak
patent: 3798959 (1974-03-01), Bowles et al.
patent: 3938072 (1976-02-01), Baird et al.
patent: 3960007 (1976-06-01), Swenson
patent: 4095474 (1978-06-01), Hancock et al.
patent: 4212201 (1980-07-01), Hirsch et al.
patent: 4325255 (1982-04-01), Howard et al.
patent: 4326416 (1982-04-01), Fredberg
patent: 4431005 (1984-02-01), McCormick
patent: 4458530 (1984-07-01), Bastida
patent: 4630606 (1986-12-01), Weerda et al.
patent: 4653327 (1987-03-01), Varterasian et al.
patent: 4729245 (1988-03-01), Hansman, Jr.
patent: 4790183 (1988-12-01), Pfost et al.
patent: 4864856 (1989-09-01), Ichikawa et al.
patent: 4887068 (1989-12-01), Umehara
patent: 4949716 (1990-08-01), Chenoweth
patent: 5027655 (1991-07-01), Sweet
patent: 5128656 (1992-07-01), Watanabe
"Mechanical Response of Lungs at High Frequencies", J. J. Fredberg et al., May 20, 1978, Journal of Biomechanical Engineering.
"Canine Pulmonary Input Impedance Measured by Transient Forced Oscillations" J. J. Fredberg et al.; Journal of Biomechanical Engineering, May 1978.
Cohen Lee S.
Gilbert Samuel
Playa de los Vivos S.A.
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