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    • 123. 发明申请
    • MEASUREMENT DEVICE AND METHOD FOR ANALYZING A SAMPLE GAS BY INFRARED ABSORPTION SPECTROSCOPY
    • 通过红外吸收光谱法分析样品气体的测量装置和方法
    • US20110270113A1
    • 2011-11-03
    • US13143074
    • 2010-12-21
    • Karsten HeyneTom Rubin
    • Karsten HeyneTom Rubin
    • A61B5/083G01J5/02
    • G01N21/3504A61B5/082A61B5/0836A61B5/087A61M16/12A61M2230/432G01N21/39G01N2800/085
    • A measurement device and a method for analyzing a sample gas by infrared absorption spectroscopy are described. The measurement device comprises: a measurement chamber with the sample gas to be analyzed, a laser being arranged in relation to the measurement chamber such that light being emitted from the laser radiates through the measurement chamber, a detection device detecting the light being emitted from the laser and radiated through the measurement chamber, and an evaluation unit evaluating signals generated by the detection device regarding a light absorption occurred in the measurement chamber. Provision is made that the laser is a narrowband emitting laser, the line width of which is smaller or equal to the width of an infrared absorption line to be measured of the sample gas, the laser is designed and arranged such that the laser frequency is varied periodically within a defined spectral range, wherein the laser frequency and its variation are chosen such that at least one infrared absorption line to be measured of the sample gas lies in the defined spectral range, and the detection device is designed and arranged such that it detects the light being emitted from the laser and radiated through the measurement chamber in such a time-resolved manner that the light absorption can be determined frequency-resolved within the defined spectral range, wherein the detection device carries out a single absorption measurement within 10−5 s or faster. Furthermore, the measurement device is suited and can be arranged to measure the respiratory gas of a human or animal as sample gas, wherein the respiratory gas exchanges in the measurement chamber only by the respiration of the human or animal, and the respiratory resistance of the measurement device is less than 60 mbar.
    • 描述了通过红外吸收光谱分析样品气体的测量装置和方法。 测量装置包括:具有待分析的样品气体的测量室,相对于测量室布置的激光,使得从激光发射的光辐射穿过测量室;检测装置,检测从 激光并通过测量室辐射,并且评估单元评估由检测装置产生的关于在测量室中发生的光吸收的信号。 规定,激光是窄带发射激光器,其线宽小于或等于待测样品气体的红外线吸收线的宽度,激光器的设计和布置使得激光频率变化 周期性地在限定的光谱范围内,其中激光频率及其变化被选择为使得要测量的样品气体的至少一个红外线吸收线位于限定的光谱范围内,并且检测装置被设计和布置成使得其检测 该光从激光器射出并以这样的时间分辨方式辐射通过测量室,使得光吸收可被确定为在规定的光谱范围内频率分辨,其中检测装置在10-5-5内进行单次吸收测量 s或更快。 此外,测量装置是适合的,并且可以被布置为测量作为样品气体的人或动物的呼吸气体,其中呼吸气体仅通过人或动物的呼吸而在测量室中交换,并且呼吸阻力 测量装置小于60毫巴。
    • 127. 发明授权
    • Apparatus and method for mask free delivery of an inspired gas mixture and gas sampling
    • 用于无气体输送吸气混合气体和气体取样的装置和方法
    • US07997271B2
    • 2011-08-16
    • US11640930
    • 2006-12-19
    • Randall S HickleSamsun Lampotang
    • Randall S HickleSamsun Lampotang
    • A61M16/00A61M15/08A62B18/08A62B18/02A62B7/00
    • A61B5/0836A61B5/097A61B5/6819A61M16/024A61M16/0666A61M16/0677A61M16/0683A61M16/0808A61M16/085A61M16/0858A61M2205/0216A61M2205/3375A61M2210/0618A61M2210/0625A61M2230/432A61M2230/437
    • This disclosure is of a mask-free device for supplying sufficient gas to a medical patient and for more accurately sampling the exhalation gas of the patient. The device includes a flexible body having lumens adapted to extend into the nares of a patient and adjacent the patient's mouth for collecting and transmitting a sampling of the patient's end tidal exhalation to a gas analyzer to analyze one or more component gases in that exhalation. The disclosure also discloses the transmittal of pressure from the nares of the patient to a pressure transducer for determining the respiratory phase of the patient and for controlling the volume of oxygen delivered to the patient. The body of the mask-free unit further includes conduits for delivering oxygen through diffuser orifices to positions adjacent the patient's nares and mouth. Finally, a controller is interconnected between the pressure transducer and the gas supply for increasing the delivery of gas during the inhalation phase of the patient's respiration and for decreasing said delivery upon the exhalation phase for the purpose of avoiding dilution of the exhalation sample.
    • 本公开是用于向医疗患者提供足够的气体并且更准确地对患者的呼出气体取样的无掩模装置。 该装置包括柔性体,其具有适于延伸到患者的鼻孔并且邻近患者嘴部的腔,用于收集和传送患者的末端潮气呼气的采样并将其发送到气体分析器以分析呼气中的一种或多种组分气体。 本公开还公开了从患者的鼻孔传递压力到压力换能器,用于确定患者的呼吸相位并控制输送给患者的氧气体积。 无面罩单元的主体还包括用于通过扩散器孔将氧输送到邻近患者的鼻孔和嘴部的位置的导管。 最后,控制器在压力传感器和气体供应之间相互连接,用于增加在患者呼吸的吸入阶段期间气体的输送,并且为了避免呼气样本的稀释,在呼气阶段减少所述输送。