A kind of organization factors monitoring system for capableing of wireless charging
Technical field
The present invention relates to tissue health monitoring technical field more particularly to a kind of systems for monitoring ulcer.
Background technique
Skin refers to tissue of the body surface packet outside muscle, is the maximum organ of human body.Mainly carry protection body,
It perspires, feel the functions such as cold and hot and pressure.Skin covers whole body, it makes various in vivo organize with organ from physical, mechanical
Property, chemically with the invasion of pathogenic microorganism.The skin of people and higher mammal is by epidermis, corium, subcutaneous tissue up of three-layer.
In medical monitoring, the integrality of patient skin is always the problem of nurse and sanatorium pay close attention to for a long time.Meanwhile ulcer,
Especially venous ulcer and bedsore, be it is most important, especially to skin problem, especially to be hospitalized the elderly for.Inspection
Surveying the formation of early stage wound is an extremely challenging and expensive problem.
When considering age and other factors, the incidence of ulcer is dramatically increased.The overall incidence of inpatient bedsore
The ratio of range from 2.7% to 29.5%, the patient of intensive care unit is greater than 50%, and the old man for nursing hospital is possible to from ulcer
First stage develop to other higher order sections.
Bedsore, ulcer are also related to the increase of mortality risk in latter year of leaving hospital.Equally, for the patient of hospitalization and
Speech, especially the middle-aged and the old, venous ulcer can also cause serious health problem.Up to 3% population suffers from leg ulcer, and
This number is even 20% or more in 80 years old or more crowd.Once torment of the patient by venous ulcer, wound
Recurrent possibility is also very high.
The high cost and disease incidence of vein, skin ulcer, especially pressure venous ulcer, in addition the difficulty for the treatment of, increases
Add patient to cause the risk of Other diseases or death, therefore, need a kind of device that can continuously monitor with pre- ulcer,
Early warning can be provided in morbidity early stage, to remind patient and care-giver to take timely measure.
Summary of the invention
One kind of the invention is capable of the organization factors monitoring system of wireless charging, comprising: Oximetry module, measurement by
The blood oxygen signal of examination person;Elasticity measurement module measures the tissue elasticity signal of subject;Wireless charging module, for institute
The battery for stating monitoring system carries out wireless charging, and the wireless charging module includes multiple resonance coils;Processing module, to by
The blood oxygen signal and tissue elasticity signal of examination person is handled, and is estimated with the organization factors to subject, and exported;
The organization factors include at least one ulcer, bedsore.
The battery is powered to the processing module, Oximetry module, elasticity measurement module, and the monitoring system is also
Including battery dump energy measurement module, for carrying out remaining capacity measurement to battery, when remaining capacity is too low, electricity is carried out
Deficiency prompt, and start the wireless charging module and search radio magnetic wave, if searching radio magnetic wave, to battery into
Row wireless charging.
Further, Oximetry module of the invention includes light source and detector, and the light source issues exciting light, with right
The tissue of subject is irradiated, and the detector is detected to by the light of tissue.
Further, the elasticity measurement module includes pressure sensor and displacement sensor;The pressure sensor inspection
The power for being applied to tissue is surveyed, the detection of institute's displacement sensors is due to applying displacement of tissue caused by the power.
Further, the processing module includes oximetry value computing module, blood oxygen exception judgment module, tissue bullet
Property computing module, Flexible change computing module, ulcer monitoring modular and output module;Wherein, the oximetry value meter
Calculate the oximetry value that module calculates test serum according to the blood oxygen signal that Oximetry module measurement obtains;The blood oxygen is different
Normal judgment module calculates blood oxygen saturation variability index according to oximetry value and benchmark oximetry value;The tissue bullet
The coefficient of elasticity of property computing module computation organization, the Flexible change rate of Flexible change computing module computation organization are described
Ulcer monitoring modular judges the situation of tissue, the output according to the blood oxygen saturation variability index and the Flexible change rate
Module carries out the situation of output organization and alarms if necessary.
Further, the process of the intensity value of the oximetry value computing module calculating blood oxygen includes:
Use the absorbance A of formula (1) computation organization:
Formula (1);
Wherein,, R is the absolute reflectance of tissue,Indicate the intensity of reflected light of tissue,Expression is irradiated to
The incident intensity of tissue, according to Lambert-Beer's law, the relationship between the concentration and reflectivity of ingredient to be measured can be further
It indicates are as follows:
Formula (2);
Wherein C represents the concentration of tissue illumination group, and a is the proportionality constant of tissue, depends on tissue.
If the incident light wave of light source transmitting is a length ofWith, then the absorbance under two kinds of wavelength can indicate are as follows:
Formula (3);
Formula (4);
Solve above-mentioned equation, the concentration value of available oxyhemoglobinWith the concentration value of deoxyhemoglobin, it is specific as follows:
Formula (5);
Formula (6);
WhereinTo be in wavelengthWhen the absorbance organized;To be in wavelengthWhen the suction absorbance organized;L is
The distance between wavelength transmitter and wavelength detector;WithRespectively indicating wavelength isWhen hemoglobin and
The scattering coefficient of deoxyhemoglobin;WithRespectively indicating wavelength isWhen hemoglobin and deoxyhemoglobin
Scattering coefficient;
Blood oxygen saturationBe defined as oxyhemoglobin concentration and total hemoglobin concentration (oxyhemoglobin and
The sum of concentration of deoxyhemoglobin) between ratio, be embodied as:
Formula (7);
The oximetry value that tissue is indicated with percentage, further indicates that are as follows:
Formula (8).
The blood oxygen exception judgment module calculates blood oxygen saturation according to oximetry value and benchmark oximetry value
Variability index, specifically:
Formula (9);
Indicate blood oxygen saturation variability index, whereinFor the subject's reality being calculated by above-mentioned formula (8)
When oximetry value,For subject's benchmark oximetry value of blood oxygen exception judgment module storage.
Further, the coefficient of elasticity of tissue elasticity computing module computation organization of the invention specifically:
It is assumed that tissue is uniform formation, according to Hooke's law, then
F=- kx formula (10);
By above-mentioned formula (10), in the case where known F and x, available k, wherein F is to be detected by the pressure sensor
The pressure signal arrived, x are the displacement signal that the displacement sensor arrives;K is the tissue elasticity coefficient for characterizing tissue elasticity.
Further: the Flexible change rate of Flexible change computing module computation organization specifically:
The tissue elasticity coefficient k that the Flexible change computing module is calculated according to the tissue elasticity computing module, and
The coefficient of elasticity k ' of the tissue prestored under normal circumstances obtains the Flexible change rate of tissue by formula (11):
Formula (11).
Further, the ulcer monitoring modular is according to the blood oxygen saturation variability index and the Flexible change rate
Judge the situation of tissue, comprising:
After the ulcer monitoring modular obtains the Flexible change rate of blood oxygen saturation variability index Q1 and tissue, according to the following formula
(12) the ulcer status score of computation organization:
Formula (12);
WhereinWithFor corresponding weight coefficient, value is rule of thumb carried out, and;
The ulcer monitoring modular according to calculated ulcer status score judge the situation of tissue, specific judgment criterion are as follows:
If, determine that the organization factors of subject are normal;
If, determine that early stage ulcer occurs for patient;
If, determine that severe ulceration occurs for patient;
The output module is exported accordingly according to the judging result of the ulcer test module.
The present invention using the elastomer signal of blood oxygen signal and tissue as the situation for being used for monitoring tissue, such as ulcer, bedsore,
The index of inflammation etc. is fitted the weight for determining that two kinds of signals are occupied in monitoring by data, so that system of the invention can
With situations such as the ulcer of accurately estimating tissue, and device is arranged to the such as portable device such as bracelet, chest strap, it can
To be continuously monitored under the premise of accurate judgement organization factors.
By continuously monitoring the variation of blood oxygen saturation and tissue elasticity, can be reduced in early detection and pre- ulcer
Patient causes the risk of Other diseases or death, is effectively improved and alleviates the burden of nursing staff, reduce medical treatment at
This, while wearer, such as sickbed patients, patient with diabetic feet etc., data can be monitored in real time, ask for help in time,
It prevents from deteriorating.
Detailed description of the invention
Fig. 1 is system construction drawing of the invention;
Fig. 2 is the schematic diagram of Oximetry module of the invention;
Fig. 3 is Elasticity schematic diagram when tissue of the invention is under pressure;
Fig. 4 is flow chart of the method for the present invention.
Specific embodiment
Referring to Fig.1, the system for ulcer monitoring includes: Oximetry module 1, elasticity measurement module 2 and processing mould
Block 3.Oximetry module 1 includes light source module 11 and detector 12, and wherein light source module 11 is that tissue can be made to generate blood oxygen
The light source of perfusion, such as one or more LED or laser diode illuminator etc., can emit feux rouges and infrared light;Detector 12
For photodetector, such as photodiode, phototriode detector etc., it is able to detect tissue (skin) and is shone by light source
The signal generated after penetrating;Elastic module module 2 includes pressure sensor and displacement sensor, and pressure sensor is for detecting to group
The pressure of (skin) application is knitted, displacement sensor can be hall sensing for detecting the displacement of tissue under pressure
Device or acceleration transducer etc.;The data that Oximetry module 1 and elasticity measurement module 2 measure be sent to processing module 3 into
Row processing, processing module 3 include oximetry value computing module 31, blood oxygen exception judgment module 32, tissue elasticity calculating mould
Block 34, Flexible change computing module 35, ulcer monitoring modular 36 and output module 37.
Wireless charging module carries out wireless charging, the wireless charging module packet for the battery to the monitoring system
Include multiple resonance coils;
The battery is powered to the processing module, Oximetry module, elasticity measurement module, which further includes
Battery dump energy measurement module, when remaining capacity is too low, carries out not enough power supply for carrying out remaining capacity measurement to battery
Prompt, and start the wireless charging module and search radio magnetic wave, if searching radio magnetic wave, nothing is carried out to battery
Line charge electricity (not shown).Shielded layer is set on the outside of the detector outside and the Wireless charging coil, places detection
It is mutually interfered between device and Wireless charging coil.
Ulcer is the limit office property defect of skin or mucous membrane surface tissue, festers, and surface is often covered with fester, necrotic tissue
Or crust.Ulcers, especially artery ischemia patient, the clinical development of possible experienced three stages: ischaemic phase, nutrition
Obstacle phase and gangrenous phase, lesion lead to acral or skin surface severe ischemic, therefore, the blood oxygen saturation of ulcers
It is had differences with normal population.When ulcer occurs in tissue, the elasticity of surrounding tissue also can accordingly be affected.Therefore, it is
Above-mentioned variation can be just detected in morbidity early stage, select oximetry value and the tissue elasticity value as comprehensive monitoring index
To carry out early-warning.
11 alternate emission feux rouges of light source and infrared light are received after the reflection of tissue or projection by detector 12, by light
After signal is converted to electric signal, then detector 12 sends a signal to the oximetry value computing module 31 of processing module 3
It is handled, oximetry value calculates 31 absorption coefficient according to hemoglobin and deoxyhemoglobin to feux rouges and infrared light
Difference calculates oximetry value using Lambert-Beer's law, and present invention employs the calculating of improved Lambert-Beer's law
Blood oxygen saturation, specific as follows:
Use the absorbance A of formula (1) computation organization:
Formula (1);
Wherein,, R is the absolute reflectance of tissue,Indicate the intensity of reflected light of tissue,It is irradiated to tissue
Incident intensity, according to Beer law, the relationship between concentration and reflectivity can be further indicated that are as follows:
Formula (2);
Wherein C represents the concentration of tissue illumination group, and a is the proportionality constant of tissue, depends on tissue.
If the incident wavelength of light source transmitting isWith, then the absorption property coefficient under two kinds of wavelength can indicate are as follows:
Formula (3);
Formula (4);
Solve above-mentioned equation, the concentration value of available oxyhemoglobinWith the concentration value of deoxyhemoglobin, it is specific as follows:
Formula (5);
Formula (6);
WhereinTo be in wavelengthWhen the absorbance organized;To be in wavelengthWhen the suction absorbance organized;L is
The distance between wavelength transmitter and wavelength detector;WithRespectively indicating wavelength isWhen hemoglobin and de-
The scattering coefficient of oxygen hemoglobin;WithRespectively indicating wavelength isWhen hemoglobin and deoxyhemoglobin
Scattering coefficient.
Blood oxygen saturation is defined as the concentration of oxyhemoglobin and total hemoglobin concentration (oxyhemoglobin and takes off
The sum of the concentration of oxygen hemoglobin) between ratio, be embodied as:
Formula (7);
The oximetry value of tissue is usually indicated with %, therefore, can be indicated are as follows:
Formula (8);
In the application preferablyFor 660nm,For 880nm.
Oximetry value computing module 31 transmits a signal to blood oxygen and sentences extremely after calculating oximetry value
Disconnected module 32 is judged that blood oxygen exception judgment module 32 is stored with benchmark blood oxygen oximetry value, benchmark blood oxygen saturation
The history that angle value can be the crowd's normal average value or subject that obtain from medical data base needs intensity value, blood
Oxygen exception judgment module 32 obtains blood oxygen saturation variability index Q1 by judgement, and blood oxygen saturation variability index Q1 is normalizing
The index of the blood oxygen of change, it is specific to calculate are as follows:
, formula (9);
WhereinTo carry out real-time measurement, the real-time blood oxygen saturation of subject being calculated by above-mentioned formula (8)
Value,The subject's benchmark oximetry value stored for blood oxygen exception judgment module 32.
Elasticity measurement module 2 includes pressure sensor, and measurement is applied to the pressure on tissue (skin) surface, displacement sensing
Device measures the displacement variable of tissue under pressure, then sends pressure signal and displacement signal to tissue elasticity meter
Module 34 is calculated, by the elasticity of 34 computation organization of tissue elasticity computing module.
The tissue of human body, especially skin be a complicated medium comprising epidermis, skin corium and subcutaneous group
The structures such as knit, in fact a heterogene structure, herein, in order to from the elasticity of macroscopically quantitative tissue, it is assumed that tissue is equal
Even tissue, as shown in figure 3, equivalent schematic when being under pressure for tissue has then according to Hooke's law
F=- kx formula (10);
Tissue elasticity computing module 34 obtains the displacement signal x that pressure signal F and displacement sensor are sent, and can determine tissue
Coefficient of elasticity k, it is hereby achieved that the tissue elasticity coefficient k of characterization tissue elasticity.
The tissue elasticity coefficient k that Flexible change computing module 35 is calculated according to tissue elasticity computing module 34, and
The coefficient of elasticity k ' of the tissue prestored under normal circumstances, obtains the Flexible change rate of tissue, specifically:
Formula (11).
The data transmission that blood oxygen exception judgment module 32 and Flexible change computing module 35 obtain to ulcer monitoring modular 36,
Ulcer monitoring modular 36 obtains the organization factors of human body according to the Flexible change rate of blood oxygen saturation variability index Q1 and tissue,
Than such as whether with ulcer etc., and risk with ulcer etc., and output is carried out by output module 37 and is shown, export mould
Block 37 can be shown for display screen, or when ulcer monitoring modular 36 monitors patient occurs for alarm module etc. early stage
When ulcer state, alarm module reminds subject that medical or medical staff takes appropriate measures in time.
Ulcer monitoring modular 36 judges whether tissue suffers from the detailed process of ulcer are as follows:
After ulcer monitoring modular 36 obtains the Flexible change rate of blood oxygen saturation variability index Q1 and tissue, count according to the following formula
Calculate the ulcer status score of tissue:
Formula (12);
WhereinWithFor weight coefficient, value is rule of thumb carried out, and.The inventors discovered that when0.35 is taken,When taking 0.65, the result and the actual result goodness of fit obtained by the device monitoring is higher.
It is calculated when ulcer monitoring modular 36When between 0-0.2, determine that the approximation of subject is normal;?
When between 0.2-0.5, determine that early stage ulcer occurs for patient, output module exports the result and exports the alarm signal of early stage risk
Number, such as buzzing;D determines that the ulcer of patient must take measures rapidly at 0.5 or more, and output module 37 exports the monitoring
Signal, and export rapid and sharp buzzing alarm and light flash etc..
The method that the application further relates to monitoring ulcer, as shown in figure 4, specifically:
Oximetry module 1 continuously measures the blood oxygen signal of subject;
Elasticity measurement module 2 continuously measures the tissue elasticity signal of subject;
Processing module 3 handles above-mentioned blood oxygen signal and tissue elasticity signal, obtains the situation of the ulcer of subject, goes forward side by side
Row output.
Oximetry module 1, elasticity measurement module 2 and processing module 3 can be independent component, point be in different
Place also can integrate as a device, using the same carrier, such as can be using structure as bracelet, waistband, chest strap, wearing clothing
Clothes or bedside monitor etc. use for daily or hospital, are continuously monitored, on the carrier, be can be set at least
One Wireless charging coil carries out wireless resonant charging, meanwhile, on the outside of the detector outside and the Wireless charging coil
Shielded layer is set, places and is mutually interfered between detector and Wireless charging coil.
The present invention is by using the elasticity of blood oxygen saturation and tissue as the monitoring index of tissue ulcer, by continuously monitoring
The variation of blood oxygen saturation and tissue elasticity, can in early detection and pre- ulcer, reduce patient cause Other diseases or
The risk of person's death, is effectively improved and alleviates the burden of nursing staff, reduce medical treatment cost, continuous in order to carry out
Electricity early warning and wireless charging is arranged in monitoring, in low battery, carries out electricity early warning, while starting wireless charging signal and searching
It seeks, with timely electric energy supplement, is ready to be carried out continuously monitoring tissue situation, removes carrier without user.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.