Air tonometry method and apparatus for measuring intraluminal ga

Surgery – Truss – Pad

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128634, 128637, A61B 500

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054233208

ABSTRACT:
A method and apparatus for measuring or monitoring pCO.sub.2, and optionally pO.sub.2, on a real-time basis, in the stomach or the intestine using air tonometry. The intraluminal measurements are made using a catheter having a CO.sub.2 sensor, and optionally a pO.sub.2 sensor, at its tip for in situ measurements, or by circulating a fixed amount of air through the catheter with measurement occurring at the proximal end of the catheter. Instrumentation supporting the sensor may be adapted for location within a patient or external to a patient.

REFERENCES:
patent: 4016863 (1977-04-01), Brantigan
patent: 4187856 (1980-02-01), Hall et al.
patent: 4221567 (1980-09-01), Clark et al.
patent: 4301809 (1981-11-01), Pinchak
patent: 4381011 (1983-04-01), Somers, 3rd
patent: 4424276 (1984-01-01), Clark et al.
patent: 4567748 (1986-02-01), Klass et al.
patent: 4643192 (1987-02-01), Fiddian-Green
patent: 4803992 (1989-02-01), Lemelson
patent: 4854321 (1989-08-01), Boiarski
patent: 4901727 (1990-02-01), Goodwin
patent: 4949724 (1990-08-01), Pieter et al.
patent: 4996990 (1991-03-01), Hideshima
patent: 5020537 (1991-06-01), Gunther
patent: 5031623 (1991-07-01), Kohayakawa et al.
patent: 5115811 (1992-05-01), Hartlaub et al.
patent: 5176882 (1992-01-01), Gray et al.
patent: 5186172 (1993-02-01), Fiddian-Green
patent: 5193544 (1993-03-01), Jaffe
Bass et al., "Intraluminal pCO2: A Reliable Indicator of Intestinal Ischemia," Journal of Surgical Research, vol. 39, pp. 351-360 (1989).
Bullock et al., "A Rapid Scanning Spectrometer for Oscillographic Presentation in the Near Infrared," J. Opt. Soc. Am., vol. 40, No. 9, pp. 608-615 (1950).
Clark et al., "Monitor and Control of Blood and Tissue Oxygen Tension," Trans. Am. Soc. Artif. Intern. Organs, vol. 2, pp. 41-48 (1956).
Kohama et al., "Continuous Monitoring of Arterial and Tissue pCO2 With Sensors Based on the pH-ISFET," Crit. Care Med., vol. 12, p. 940 (1984).
Kurland et al., "Diagnostic Tests for Intestinal Ischemia," Surg. Clin. North Am., vol. 72, No. 1, pp. 85-101 (1992) **Abstract Only**.
Larsen et al., "Characterization of the Silicone Tonometer Using a Membrane-Covered Transcutaneous Electrode," Scand. J. Clin. Lab Invest, vol. 49, pp. 513-519 (1989).
Lubbers et al., "Quantitative Fluorescence Photometry with Biological Fluids and Gasses," Adv. Exp. Med. Biol., vol. 75, pp. 65-69 (1976).
Pauling et al., "An Instrument for Determining the Partial Pressure of Oxygen in a Gas," Science, vol. 103, p. 338.
Schlichting et al., "[Indirect Measurement of Intramucosal pH in the Gastrointestinal Tract Using a Tonometer. A Useful Marker of Tissue Oxygenation in Critically III Patients]," Tidsskr Nor Laegeforen, vol. 112, No. 16, pp. 2096-2099 (1992) **Abstract Only**.
Seitz, "Chemical Sensors Based on Fiber Optics," Analytical Chemistry, vol. 56, No. 1, pp. 16A-34A (1984).
Severinghaus et al., "Electodes for Blood pO2 and pCO2 Determination," J. Appl. Physiol, vol. 13, pp. 515-520 (1958).
Stow et al., "Rapid Measurement of the Tension of Carbon Dioxide in Blood," Arch. Phys. Med. Rehabil. vol. 38, pp. 650-656, (1954).
Ueda, "[Clinical Evaluation of Artificial Tonometry for Noninvasive, Continuous Blood Pressure Monitoring During Anesthesial]," Hokkaido Igaku Zasshi, vol. 66, No. 6, pp. 805-817 (1991) **Abstract Only**.
Vurek et al., "A Fiber Optic pCO2 Sensor," Ann. Biomed. Eng., vol. 11, pp. 499-510 (1984).

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