45 results about "Oxyhemoglobins" patented technology

A rectal near infrared (NIR) scanning polarization imaging system uses NIR Photonic Prostatoscopy Analyzer (NIRPPA) for prostate cancer detection using light. The NIRPPA consists of a portable rectal NIR scanning polarization imaging unit and an optical fiber-based rectal probe capable of recording sets of 2D images of a prostate through rectum at different wavelengths and depths and obtaining a three dimensional (3D) image of the prostate and 3D locations of abnormal tissue inside the prostate. Diode lasers / light emission diodes (LEDs) with selected emitting wavelengths are used in the NIR spectral range from 650 nm to 2,400 nm corresponding to the four tissue optical windows (#I, 650 nm-950 nm; #II, 1,100 nm-1,350 nm; #III, 1,600 nm-1,870 nm; and #IV, 2,100 nm-2,300 nm). The fingerprint absorptions of water (H2O), Oxyhemoglobin (HbO2) and deoxyhemoglobin (Hb) in the prostate are used as native biomarkers for prostate cancer detection.

The invention provides a purely natural bean curd having a beautifying function and a production method thereof. The invention is characterized in that: active ingredients such as aloes, seabuckthorn fruits, almonds, coix seeds, milk, dioscoreae roots and pearl powder which have beautifying functions are added to be perfectly combined with soybeans to produce a functional beautifying bean curd. The bean curd contains abundance of proteins, minerals, various vitamins and the like and has the effects of resisting oxidation, obviously improving the organism immunity, making oxyhemoglobin in capillaries release more oxygen for the enough oxygen supply of tissue cells and improving the activities of cellular tissues (comprising skins, mucous membranes, hairs and the like) to be in a healthy physiological state. The additives have respective characteristics of high nutrition, unique flavor, tenderness and refreshment and functions of eliminating toxin and beautifying skin and whitening skin so as to be good presents for beautifying. Therefore, the traditional bean curds and the production method thereof are improved, the requirements of numerous modern consumers are met, and the market gap is filled.

A method of measuring the stress or relaxation level of a mammal and a method of measuring the activity of the sympathetic nervous system of a mammal by measuring quantititative levels of deoxyhemoglobin and oxyhemoglobin are disclosed. Preferably, the levels of deoxyhemoglobin and hemoglobin are measured by a noninvasive technique, such as spectroscopy. A method of changing the activity of the sympathetic nervous system of a mammal is also disclosed, wherein the method includes a step of administering an effective amount of sensory regimen to the mammal. The method is useful for humans who are operating vehicles or machinery, who are suffering from cardiovascular disease or related complications, who are pregnant, or who are preparing for sleep. In addition, a method of improving the complexion of the skin of a mammal is disclosed.

The present invention provides a device and a method for blood haemoglobin measurement without carboxyhaemoglobin interference. In the present device and method, oxyhemoglobin, deoxyhemoglobin and methemoglobin are converted into a methemoglobin derivative, i.e. Imidazole-methemoglobin. Imidazole-methemoglobin and carboxyhemoglobin in the matrix are collectively quantified by the reflectance spectroscopy of the matrix at 525 nm, the isobestic point between Imidazole-methemoglobin complex and carboxyhemoglobin molecule.

The invention discloses an fNIRS emotion recognition method and system based on a graph network and adaptive denoising, and the method comprises the steps: enabling fNIRS collection equipment to continuously collect the variable quantity of light intensity before and after transmitting-receiving, converting the variable quantity of the light intensity into the change of absorbance, and further obtaining the relative variable quantity of the concentration of oxyhemoglobin and the concentration of deoxidized hemoglobin; de-noising is carried out through a self-adaptive de-noising network model to obtain a pure signal, an input signal of the self-adaptive de-noising network model is the relative variation of the concentration of the oxyhemoglobin and the concentration of the deoxidized hemoglobin obtained in the previous step, and an output signal of the self-adaptive de-noising network model is the relative variation data of the concentration of the pure oxyhemoglobin and the concentration of the deoxidized hemoglobin; mapping of graph nodes is carried out in combination with probe and channel characteristics, brain topology restoration is carried out by using a graph network, and emotion tags are output in a classified manner through a dynamic graph attention emotion recognition network model. The problems that a brain-computer interface is complex to wear, difficult to operate and the like in practical application at present are solved.

The invention discloses a non-invasive measurement method of hemoglobin concentration based on the principle of optical reflection, comprising: setting a light source and a photoelectric detector; determining the relationship between the absorbance and the concentration of oxygenated hemoglobin and the concentration of reduced hemoglobin in hemoglobin in deep tissue; and emitting wavelength of the light source The near-infrared incident light of λ1 and λ2, the first photodetector and the third photodetector obtain the absorbance after reflection of human skin tissue respectively; the light source emits near-infrared incident light with wavelengths of λ1 and λ2, and the second photodetector and the fourth photodetector respectively obtain the absorbance reflected by the human skin tissue; the correction coefficient is introduced ω 1 and ω 2 , to obtain the concentration of oxygenated hemoglobin and the concentration of reduced hemoglobin in the deep tissue respectively; add the two concentrations to obtain the concentration of hemoglobin in the deep tissue wxya . The invention realizes noninvasive measurement of hemoglobin concentration, has low measurement cost and high measurement accuracy.

The invention provides a brain-computer interface system based on a direct flight time measurement technology, brain-computer interface wearable equipment and a control method thereof, and the system comprises a processor which is used for controlling the whole brain-computer interface system; a light source module, a photoelectric sensor, a trans-impedance amplifier, an analog-to-digital converter, a first height comparator and a second high-speed comparator. According to the system, a direct time-of-flight (DDoF) measurement technology is applied to the field of functional near-infrared brain-computer interfaces. By directly measuring the time difference between the incident ultrashort pulse near-infrared light and the emergent ultrashort pulse near-infrared light, the passing distance of the near-infrared light in the brain is calculated, and according to the scheme, the absolute value of the concentration of deoxyhemoglobin and oxyhemoglobin in the brain can be measured; and the position of the blood oxygen change of the brain can be directly measured.

The invention provides an endoscope system and a motion control method thereof, and a processor device; therefore, even if the difference of oxygen states of blood vessels is very small, the difference can be identified to be color difference being displayed; a test body is illuminated by narrow band light of a first different absorb waveband with oxyhemoglobin having a bigger light absorption factor than reduced hemoglobin having a smaller light absorption factor, and the test body is videoed to obtain blue image data Bx. The test body, illuminated by G light having green waveband, is videoed to obtain green image data Gy; intensity ratio B / G is calculated according to the blue image data Bx and the green image data Gy; the intensity ratio B / G and the reduction of the oxygen saturation correspondingly enlarges; gain processing corresponding to the intensity ratio B / G is carried out for the blue image data Bx and the green image data Gy, thereby obtaining blue image data Bx* and green image data Gy*. And oxygen saturation image can be displayed according to the blue image data Bx* and green image data Gy*.

The present invention relates to the technical field of blood oxygen measurement in biomedical engineering, and proposes a method for measuring blood oxygen saturation using a single-distance light source-detector pair, including the following steps: S1, configuring two phantoms with known absorption coefficients Model; S2, measuring the light intensity of the two phantom models at wavelength λ1 and wavelength λ2 by single-distance light source-detector; S3, measuring the light intensity of the sample at wavelength λ1 and wavelength λ2 by single-distance light source-detector; S4. Calculate the absorption coefficients of the samples at the two wavelengths according to the measured light intensity values; S5. Calculate the concentrations of oxyhemoglobin and deoxyhemoglobin in the samples according to the absorption coefficients at the two wavelengths. The present invention can quantify blood oxygen saturation by measuring optical signals with a single-distance light source-detector pair, simplifies the measuring instrument, has high accuracy, and can be widely used in the technical field of blood oxygen measurement.

The present invention relates to a container comprising haemoglobin fractions, wherein said container comprising at least two compartments, wherein a first compartment comprises O2Hb (oxyhaemoglobin) and a second compartment comprises MetHb (methaemoglobin), optionally wherein O2Hb is stabilized. The invention also relates to a kit for determining the reliability of a CO-oximetry device, wherein said kit comprises said container and to a method for determining the reliability of a CO-oximetry device using said container.

The present invention aims at providing a method for determining at least one protein in the blood which is more precise while still being simple to implement. The inventors have exploited in an original way the spectroscopy and the dosing techniques to determine accurately the content in proteins of the biological sample, notably for oxyhemoglobin, methemoglobin, heme bound to serum albumin and hemopexin and bilirubin. Such method can advantageously be used in various applications concerning heme-related or hemoprotein-related disorders, notably method for diagnosing, for following a treatment, for determining biomarkers or for screening. Such a method is also interesting for qualifying blood bags.

The present invention provides a device and a method for blood haemoglobin measurement without carboxyhaemoglobin interference. In the present device and method, oxyhemoglobin, deoxyhemoglobin and methemoglobin are converted into a methemoglobin derivative, i.e. Imidazole-methemoglobin. Imidazole-methemoglobin and carboxyhemoglobin in the matrix are collectively quantified by the reflectance spectroscopy of the matrix at 525 nm, the isobestic point between Imidazole-methemoglobin complex and carboxyhemoglobin molecule.