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Light scattering medium for pulse blood oxygen simulator and its preparation method

A pulse oximeter and emulator technology, applied in the field of simulated materials, can solve problems such as deviation, insufficient simulation of light scattering characteristics, overdrive pulse oximeter working status, etc.

Active Publication Date: 2006-09-27
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of insufficient simulation of living tissue light scattering characteristics of existing pulse oximeter simulators, and avoid overdrive phenomena and deviations in the working state of pulse oximeters that occur when the pulse oximeter is calibrated and verified. The human body actually measures the state phenomenon, and provides a light-scattering medium composite material and a preparation method that are used in a pulse oximeter simulator and have optical characteristics similar to living tissue, so that accurate calibration and calibration of the pulse oximeter can be realized. test

Method used

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  • Light scattering medium for pulse blood oxygen simulator and its preparation method

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example 3， 100 ：WL-700A and WL-700B94.5％，5.5％， and 。 example 4

[0023] The composition of the back scattering medium 5: example 2, by volume percentage: WL-700A and WL-700B epoxy resin 96%, light scattering agent 4%, this composition can simulate the light scattering characteristics and basic absorbance of the human earlobe. Example 3, by volume percentage: 94.5% of WL-700A and WL-700B epoxy resins, 5.5% of light scattering agent, this composition can simulate the light scattering characteristics and basic absorbance of human fingertips. Example 4, by volume percentage: 93.5% of WL-700A and WL-700B epoxy resin, 6.5% of light scattering agent, this composition can simulate the light scattering characteristics and basic absorbance of thicker tissue parts of human body (such as palm between fingers). The light scattering agent added in Examples 2-4 is DF-090 epoxy resin, the average diameter of colloidal particles is 1um, and the thickness is 2mm.

[0024] The above-mentioned preparation method of the light-scattering medium for the pulse oxi...

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Abstract

The present invention discloses light scattering medium for pulse oxygen simulator and its preparation process. The light scattering medium is prepared with optical filling epoxy resin 91.5-98 wt% and light scattering agent 2-8.5 wt%, and through mixing, casting in mold box at thickness of 1-2 mm, curing at 60-80 deg.c in a stove for 8 hr, and demolding, and the cured light scattering medium is adhered to the probe of the simulator. The present invention can make the pulse oxygen instrument operating in the status approaching that of practical human body for precise calibration.

Description

technical field [0001] The invention relates to a simulation material for a medical simulation appliance, in particular to a light scattering medium and a preparation method for a pulse oximeter simulator. Background technique [0002] The pulse oximeter is a new type of medical instrument that continuously monitors the oxygen saturation of human arterial blood without trauma. At present, pulse oximeters produced at home and abroad generally measure the ratio of absorbance of living tissue to light of two different wavelengths, and obtain arterial blood oxygen saturation according to the corresponding calibration curve. The total absorption of incident light waves by living tissue is composed of a steady direct current superimposed on a pulsating alternating current. The pulsating AC flow is caused by arterial blood filling the arteries at the light site, and the steady DC flow is caused by the absorption of light by skin, muscle, bone, venous blood and other tissues when b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1455
Inventor 郭萍孙卫新金捷杨新平孔澍
Owner XI AN JIAOTONG UNIV