[특허]Method and apparatus for determining patient lung pressure, compliance and resistance

[미국특허] Method and apparatus for determining patient lung pressure, compliance and resistance 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-005/08
출원번호	US-0622536 (1975-10-15)
발명자 / 주소	Davis James E. P. (Santa Monica CA) Omelich David M. (Cerritos CA)
출원인 / 주소	Puritan-Bennett Corporation (Kansas City MO 02)
인용정보	피인용 횟수 : 39 인용 특허 : 0

초록 ▼

A method and appartus for determining patient lung pressure, compliance and resistance, for use in conjunction with a respirator system of the compensated-volume type wherein a predetermined volume of gas is delivered to the patient in each breathing cycle. The method and apparatus of the invention determine both the system pressure at the point of delivery to the patient and the patient lung pressure, both at the end of the inspiration phase of the breathing cycle, and utilize these values, together with a compensated volume signal, to compute the values of patient compliance and resistance. Control circuitry, actuated periodically or on demand, substitutes an enforced plateau period following inspiration, to allow the system pressure to fall to the value of lung pressure which is obtained at the end of the inspiration phase, thereby permitting the measurement of lung pressure by sampling system pressure at the end of the plateau period. The control circuitry also controls analog-to-digital converters which convert the computed values of pressure, compliance and resistance for display in a digital display device.

대표청구항 ▼

For use with a respirator system of the volume-compensated type in which a preselected volume of gas is delivered to a patient during an inspiration phase of the patient breathing cycle, apparatus for the determination of patient compliance and resistance comprising: control means operable to initiate computation and display of patient compliance and resistance; means for sampling the system pressure at the end of the inspiration phase; means included within said control means for ensuring a plateau phase, following the inspiration phase and preceeding an expiration phase, long enough to allow the system pressure to equalize with the patient lung pressure; means for sampling the system pressure at the end of the plateau phase, to obtain a measure of the lung pressure at the end of the inspiration phase; means for monitoring the actual volume of gas delivered to the patient; and means for computing and displaying patient compliance, as derived from the monitored volume and the system pressure sampled at the end of the inspiration phase, and patient resistance, as derivEd from the monitored volume and the two sampled values of the system pressure.

이 특허를 인용한 특허 (39) 인용/피인용 타임라인 분석

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O'Mahoney John, Compliance compensation in volume control ventilator.
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van Oostrom Johannes Hugo Maria, Lung classification scheme, a method of lung class identification and inspiratory waveform shapes.
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Cohen Alan M., Method and apparatus for enhancing patient compliance during inspiration measurements.
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Keith N. Knapp, II ; Alan M. Cohen, Method and apparatus for enhancing patient compliance during inspiration measurements.
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Knapp, II, Keith N.; Cohen, Alan M., Method and apparatus for enhancing patient compliance during inspiration measurements.
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Stenzler Alex (Syosset NY), Method and apparatus for monitoring lung compliance.
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Dietz,Florian; Wedler,Wolfgang; Göbel,Christof, Method and device for detecting leaks in respiratory gas supply systems.
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Grunstein Michael M. (Denver CO), Method for determining respiratory function.
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Cohen Alan M., Methods and apparatus for R-wave detection.
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Cohen Alan M., Methods and apparatus for R-wave detection.
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Aljuri, Nikolai; Wondka, Anthony; Surjan, George; Davis, Kirk; Soltesz, Peter; Perkins, Rodney C., Minimally invasive determination of collateral ventilation in lungs.
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Soliman, Ihab S.; Brightup, Vern, Patient circuit disconnect system for a ventilator and method of detecting patient circuit disconnect.
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Palti, Yoram, Pulmonary compliance and air flow resistance.
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Gattinoni Luciano (Via Porpora 187 Milan ITX), Pulmonary pressure and volume measurement.
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Baloa Welzien, Leonardo Alberto; O'Connor, Nathan Francis, System and method for quantifying lung compliance in a self-ventilating subject.
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Ronald L. Tobia ; Steven K. Somerson, Zero flow pause during volume ventilation.
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A	생활필수품
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Method and apparatus for determining patient lung pressure, compliance and resistance 원문보기