公开(公告)号：WO1994027493A1

公开(公告)日：1994-12-08

申请号：PCT/US1994005224

申请日：1994-05-11

Applicant: SOMANETICS CORPORATION

Inventor： SOMANETICS CORPORATION ,  LEWIS, Gary, D. ,  STODDART, Hugh, F.

IPC: A61B05/00

CPC classification number: A61B5/6814 ,  A61B5/14552 ,  A61B5/14553 ,  A61B2562/164

Abstract: A method and apparatus for spectrophotometrically determining internal physiological parameters such as blood constituents, wherein a source (132) of selected electromagnetic wavelenghts is disposed at a first location and at least two detectors (128, 130) are located at particular different distances from the source, selected such that both detectors receive energy that has traversed not only perimetral layers (114, 142, 214, 242, 314, 342) such as bone, tissue, etc. but also internal tissue (140, 240, 340) disposed beyond such perimetral layers, and one such detector (130) receives energy which has traversed only a small amount of the selected internal tissue while the other (128) receives energy which has traversed substantially more of such tissue, whereby comparative analysis of the data from the two detectors provides information which consistently characterizes only the selected internal tissue. In cerebral oximetry, where the detector and receivers are applied to the forehead, the particular distances from the source to the two detectors are about 30 and 40 mm., respectively.

Abstract translation: 一种用于分光光度测定内部生理参数（如血液成分）的方法和装置，其中所选择的电磁波长的源极（132）设置在第一位置处，并且至少两个检测器（128,130）位于离源极特别不同的距离处 被选择为使得两个检测器接收不仅穿过周边层（114,142,214,242,314,342）的能量，所述周边层（114,142,214,242,314,342）例如骨，组织等，而且还包括设置在该外部层之外的内部组织（140,240,340） 周边层，并且一个这样的检测器（130）接收仅穿过少量所选择的内部组织的能量，而另一个（128）接收到已经穿过该组织的实质上更多的能量，由此对来自两个 检测器提供的信息始终只表示所选择的内部组织。 在脑血氧测定法中，检测器和接收器应用于前额，从源到两个检测器的特定距离分别为30和40 mm。

公开(公告)号：EP0700267A1

公开(公告)日：1996-03-13

申请号：EP94917948.0

申请日：1994-05-11

Applicant: SOMANETICS CORPORATION

Inventor： LEWIS, Gary, D. ,  STODDART, Hugh, F.

IPC: A61B5

CPC classification number: A61B5/6814 ,  A61B5/14552 ,  A61B5/14553 ,  A61B2562/164

Abstract: A method and apparatus for spectrophotometrically determining internal physiological parameters such as blood constituents, wherein a source (132) of selected electromagnetic wavelenghts is disposed at a first location and at least two detectors (128, 130) are located at particular different distances from the source, selected such that both detectors receive energy that has traversed not only perimetral layers (114, 142, 214, 242, 314, 342) such as bone, tissue, etc. but also internal tissue (140, 240, 340) disposed beyond such perimetral layers, and one such detector (130) receives energy which has traversed only a small amount of the selected internal tissue while the other (128) receives energy which has traversed substantially more of such tissue, whereby comparative analysis of the data from the two detectors provides information which consistently characterizes only the selected internal tissue. In cerebral oximetry, where the detector and receivers are applied to the forehead, the particular distances from the source to the two detectors are about 30 and 40 mm., respectively.