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1. 发明授权

US5070245A Apparatus and method for the identification of gases 失效
标题翻译：用于识别气体的装置和方法
公开(公告)号：US5070245A
公开(公告)日：1991-12-03
申请号：US430823
申请日：1989-11-02
申请人： Borje T. Rantala , Kurt P. Weckstrom
发明人： Borje T. Rantala , Kurt P. Weckstrom
IPC分类号： G01N21/35 , G01J3/12 , G01J3/26
CPC分类号： G01J3/26 , G01J2003/1243 , G01N21/3504
摘要： An apparatus and method for the identification of one or more anesthetic or other gases included in the respiratory air of a patient, said identification being effected within the infrared range 3-4 .mu.m. The appratus comprises a radiation source (4), a chamber (1) for receiving therein a gas or gases to be examined, an optical filter (7) for passing the radiation exiting the chamber therethrough, an optical focusing device (12) through or via which the incoming radiation travels, a radiation detector (10) and a measuring processor (19) which performs the measuring and identification. The transmission band of the optical filter (7) or a combination of successive filters is within a range of 1.5%-0.4% of the mean transmission wavelength and the ray arriving at filter (7) has an angle of incidence between 10.degree.-60.degree., the measuring effected within this range being performed at more than two angles. A measured spectrum is compared with a prior known spectrum by means of correlation algorithm to carry out the ientification. In a monitor for anesthetic gases, the content of gases is measured by means of a rapid-response sensor breath by breath. The quality or mixing ratio of an anesthetic gas is, in turn, measured by means of a slower sensor of the type described above.
摘要翻译：用于鉴定包括在患者呼吸空气中的一种或多种麻醉剂或其它气体的装置和方法，所述鉴定在3-4μm的红外范围内进行。该装置包括辐射源（4），用于在其中容纳待检查的气体或室内的室（1），用于使离开室的辐射通过其中的光学滤光器（7），光学聚焦装置（12）通过或入射辐射穿过的辐射探测器（10）和执行测量和识别的测量处理器（19）。滤光器（7）的传输带或连续滤光器的组合在平均透射波长的1.5％-0.4％的范围内，并且到达滤光器（7）的光线的入射角为10°-60° DEG，在该范围内进行的测量以多于两个角度进行。通过相关算法将测量光谱与先前已知的光谱进行比较，以进行方位化。在用于麻醉气体的监测器中，通过呼吸快速响应的传感器呼吸来测量气体的含量。麻醉气体的质量或混合比又通过上述类型的较慢传感器来测量。

2. 发明授权

US6097034A Radiation source assembly and transducer for analyzing gases or other substances 失效
标题翻译：用于分析气体或其他物质的辐射源组件和传感器
公开(公告)号：US6097034A
公开(公告)日：2000-08-01
申请号：US024368
申请日：1998-02-12
申请人： Kurt P. Weckstrom , Matti Huiku
发明人： Kurt P. Weckstrom , Matti Huiku
IPC分类号： A61B5/083 , G01J3/10 , G01N21/35 , G01N21/61
CPC分类号： A61B5/0836 , G01J3/108 , G01N21/3504
摘要： A radiation source assembly and transducer incorporating same are suitable for use in measuring spectral absorption properties of a substance to be analyzed, such as a gas. The radiation source assembly has an optical axis. A measuring radiation source provides radiation in the direction of the axis and a reference radiation source provides radiation in the direction of the axis. An optical diffuser is spaced from the radiation sources along the axis. Radiation from the measuring radiation source and radiation from the reference radiation source are applied to the diffuser and the diffuser forms an exiting radiation beam for the assembly from the radiation of the measuring radiation source and reference radiation source. The exiting radiation beam extends along the axis. In at least a portion of a cross-section of the exiting radiation beam taken perpendicular to the axis, the configuration of the distribution of the radiation from each of the sources as seen by a detector in generally the same so that the operation of the radiation source assembly resembles that of a single-path photometer. The transducer further includes the detector for receiving the exiting radiation beam after it has passed through the substance. The assembly and transducer may also include optical collecting and concentrating devices for directing radiation to the detector.
摘要翻译：包含其的辐射源组件和换能器适合用于测量待分析物质如气体的光谱吸收特性。辐射源组件具有光轴。测量辐射源在轴线的方向上提供辐射，并且参考辐射源沿轴线的方向提供辐射。光学漫射器与辐射源沿轴线间隔开。来自测量辐射源的辐射和来自参考辐射源的辐射被施加到扩散器，并且漫射器从测量辐射源和参考辐射源的辐射形成用于组件的出射辐射束。离开的辐射束沿轴线延伸。在离开辐射束垂直于轴线截取的横截面的至少一部分中，来自每个源的辐射分布的构型大体上相同，使得辐射的操作大致相同源组件类似于单路光度计。换能器还包括用于在其通过物质之后接收出射辐射束的检测器。组件和换能器还可以包括用于将辐射引导到检测器的光学收集和浓缩装置。

3. 发明授权

US06041247A Non-invasive optical measuring sensor and measuring method 失效
标题翻译：无创光学测量传感器和测量方法
公开(公告)号：US06041247A
公开(公告)日：2000-03-21
申请号：US208171
申请日：1998-12-09
申请人： Kurt P. Weckstrom , Kimmo J. Ristolainen
发明人： Kurt P. Weckstrom , Kimmo J. Ristolainen
IPC分类号： A61B5/00
CPC分类号： A61B5/6826 , A61B5/6838
摘要： An optical sensor for non-invasively measuring the content or composition of one or more chemical components within especially a living tissue of a body portion. Radiation sources (38), emit measuring radiation with at least two wavelengths to a portion (6) of the body of a patient. A detector (37) receives the measuring radiation having passed through said body portion of a patient and converts same to electric form. At least one radiation transfer section is located between either the radiation sources or respectively the detectors and the external surface (50) of the body portion of a patient. The radiation transfer section includes measuring-radiation transmitting ends. An outer end (16, 26) facing the external body surface (50) has a surface area which is generally larger than the surface area of an inner end (13a; 19a) facing any given radiation sources or respectively detectors. A measuring-radiation diffusely reflecting surface (14, 17) is positioned between the ends. The sensor may comprise a pulse oximeter sensor.
摘要翻译：一种用于非侵入性地测量身体部分的特别是生物体组织内的一种或多种化学成分的含量或组成的光学传感器。辐射源（38）将具有至少两个波长的测量辐射发射到患者身体的部分（6）。检测器（37）接收通过患者身体部分的测量辐射并将其转换成电形式。至少一个辐射传递部分位于辐射源或者分别是检测器和患者身体部分的外表面（50）之间。辐射传递部分包括测量辐射发射端。面向外体表面（50）的外端（16,26）具有通常大于面向任何给定辐射源或分别地检测器的内端（13a; 19a）的表面积的表面积。测量辐射漫反射表面（14,17）位于两端之间。传感器可以包括脉搏血氧计传感器。

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