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Device for non-invasively detecting the oxygen metabolism in tissues

A technology of tissue and oxygen content, applied in the direction of blood flow measurement, blood characterization device, diagnostic recording/measurement, etc., can solve the problems such as impossible to give

Inactive Publication Date: 2008-04-16
LEA MEDIZINTECHN
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Problems solved by technology

But this time-resolving method has a decisive disadvantage: Since it must use a laser light source, it can only work with a small number of wavelengths
Optical methods of this type based on the analysis of the Doppler signal do not give conclusions on the determination of the oxygen load in red blood cells (erythrocytes) or in the current measurement volume

Method used

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  • Device for non-invasively detecting the oxygen metabolism in tissues
  • Device for non-invasively detecting the oxygen metabolism in tissues
  • Device for non-invasively detecting the oxygen metabolism in tissues

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Embodiment Construction

[0078] FIG. 1 shows a schematic view from below, ie looking out from the tissue, of a purely exemplary embodiment of an integrated sensor S or measuring head, as it is used in the device according to the invention. Here, the sensor includes a white light source W for illumination, a laser light source L and a plurality of detectors, where DD represents a Doppler signal detector and DR represents a backscatter intensity detector. The illustrated linear structures are examples only. Many other configurations are possible in which a detector DR farther from the light source W receives light incident on a deeper region in the tissue and is backscattered therefrom, as described in EP 771 546 A2. In addition, a temperature sensor DT is shown.

[0079] According to the invention, photons of a coherent monochromatic light source L and preferably additional one / multiple broadband white light sources W are incident into the tissue in the first region via the integrated sensor system S....

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Abstract

The invention relates to an apparatus for noninvasive determination of the oxygen turnover and data derived therefrom with an optical sensor (S) to be placed on the tissue with one or more light sources (W, L) which send light through the optical fibers to the sensor (S), one or more detectors (DD, DR) which receive light backscattered by the tissue through optical fibers, and an evaluation unit.

Description

technical field [0001] The invention relates to a method for determining the local oxygen metabolism and / or oxygen consumption and / or oxygen transport capacity and / or transported oxygen quantity and / or oxygen consumption rate and / or oxygen metabolism rate and / or from tissue pigment content means and method for deriving data, said derivation of the aforementioned parameters according to local hemoglobin concentration and / or tissue pigment content and / or local oxygen saturation and / or arterial oxygen saturation and / or blood flow velocity and / or The raw signal of the delivered blood volume and / or tissue temperature is produced by means of an optical sensor placed on the tissue. Background technique [0002] Oxygen is fundamental to almost all cells in biological tissues. In the tissues through which the blood flows, oxygen is transported from the lungs to the oxygen-consuming cells, mostly bound to hemoglobin stored in red blood cells. Arterial hemoglobin in the general circu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00A61B5/026A61B5/145A61B5/1455
CPCA61B5/6843A61B2562/046A61B5/6817A61B2562/0233A61B5/14552
Inventor 阿尔芬斯·克鲁格
Owner LEA MEDIZINTECHN
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