WO2023054810A1 - 물리적·전기적 특성을 이용한 적혈구의 당화 측정과 이를 이용한 당화혈색소 수치 측정 방법 및 이를 수행하는 장치 - Google Patents
물리적·전기적 특성을 이용한 적혈구의 당화 측정과 이를 이용한 당화혈색소 수치 측정 방법 및 이를 수행하는 장치 Download PDFInfo
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- WO2023054810A1 WO2023054810A1 PCT/KR2021/018280 KR2021018280W WO2023054810A1 WO 2023054810 A1 WO2023054810 A1 WO 2023054810A1 KR 2021018280 W KR2021018280 W KR 2021018280W WO 2023054810 A1 WO2023054810 A1 WO 2023054810A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
- G01N27/3271—Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502761—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip specially adapted for handling suspended solids or molecules independently from the bulk fluid flow, e.g. for trapping or sorting beads or physically stretching molecules
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
- G01N27/3275—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/72—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving blood pigments, e.g. haemoglobin, bilirubin or other porphyrins; involving occult blood
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/72—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving blood pigments, e.g. haemoglobin, bilirubin or other porphyrins; involving occult blood
- G01N33/721—Haemoglobin
- G01N33/723—Glycosylated haemoglobin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0647—Handling flowable solids, e.g. microscopic beads, cells, particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/06—Auxiliary integrated devices, integrated components
- B01L2300/0627—Sensor or part of a sensor is integrated
- B01L2300/0663—Whole sensors
Definitions
- the present invention relates to a method for measuring the concentration of glycated A1c hemoglobin.
- a blood glucose test which is generally performed for the diagnosis of diabetes, measures the amount of glucose in the blood as a blood glucose level.
- the blood sugar level is a temporary value and can be changed before or after a meal or by other factors.
- the glycated hemoglobin test measures the extent to which glucose is bound to hemoglobin (hemoglobin) in red blood cells as a numerical value.
- Red blood cells bind to sugars in the blood while present in the blood, and the average life span of red blood cells is measured by measuring the level of glycated hemoglobin. Accumulated blood glucose level for 3 months can be grasped. Therefore, it is relatively less affected by exercise status or food intake than other blood glucose tests.
- the glycated hemoglobin level is a more stable level than the blood glucose level and can be a criterion for diagnosing diabetes.
- An object of the present invention is to propose a method for determining the level of glycated hemoglobin.
- an object of the present invention is to propose a method for determining the degree of glycation by measuring changes in physical properties of glycated red blood cells.
- An apparatus for measuring glycated hemoglobin for solving the above technical problems includes an inlet through which collected blood flows; a microchannel having a predetermined width so that red blood cells in the blood flowing into the inlet pass through as individual units; an outlet through which the red blood cells passing through the microchannel are discharged; and a plurality of electrode parts formed in contact with the microchannel between the inlet and the outlet, wherein the electrode part includes a plurality of electrodes arranged at predetermined intervals according to a passage direction of red blood cells passing through the microchannel.
- the electrode part is composed of a first electrode part on the inlet side and a second electrode part on the outlet side, and the impedance between at least one pair of electrodes in the first electrode part and between the at least one pair of electrodes in the second electrode part It is preferable that the impedance of the blood cell changes according to the passage of the erythrocytes.
- the first and second electrode parts each consist of three consecutive electrodes, and between the first impedance and the second impedance formed between the two consecutive electrodes of the first electrode part and the two consecutive electrodes of the second electrode part. It is preferable that the electrical equilibrium state of the third impedance and the fourth impedance formed in the red blood cells change according to the passage of the red blood cells.
- a time measuring unit for measuring passage time; and a glycated hemoglobin level calculation unit for determining the degree of glycation of red blood cells in the blood through the measured time.
- the electrode unit is composed of a first electrode unit on the inlet side and a second electrode unit on the outlet side, and the time measuring unit is a difference between a change time of the impedance value of the first electrode unit and a change time of the impedance value of the second electrode unit. It is preferable to calculate the microchannel passage time of the red blood cells as
- the first and second electrode units are composed of a plurality of electrodes, and the time measurement unit measures the change time of the impedance value according to the location of the red blood cells between at least one pair of electrodes in the first electrode unit, and the second electrode unit. It is preferable to calculate the passage time of the microchannel using a difference in the change time of the impedance value according to the location of red blood cells between at least one pair of electrodes within the microchannel.
- the glycated hemoglobin level calculation unit calculates the degree of glycation of the blood by using a proportional relationship between the passage time of the microchannel and the glycation of red blood cells in the blood.
- the method may further include a glycated hemoglobin level correction unit for correcting the degree of glycation of the blood using the user's reference glycated hemoglobin level.
- a glycated hemoglobin level correction unit for correcting the degree of glycation of the blood using the user's reference glycated hemoglobin level.
- the method for measuring glycated hemoglobin according to the present invention for solving the above technical problem includes measuring the change time of the impedance value according to the passage of the red blood cells in the blood at a first point on the flow path formed in contact with the electrode part between the blood inlet and the outlet. ; measuring a change time of an impedance value at a second point of the microchannel; measuring a flow passage time using a difference between a first impedance change time at the first point and a second impedance change time at the second point; and calculating the level of glycated hemoglobin according to the measured passage time.
- the first point is determined to be at least one position on the area where the first electrode part on the inlet side and the flow path contact each other
- the second point is determined to be at least one position on the area where the second electrode part on the outlet side and the flow path contact each other. It is desirable to be
- the first or second impedance change time is measured by a change in impedance value according to the location of red blood cells passing through the microchannel between a pair of electrodes in the first or second electrode part.
- the degree of glycation of the blood is preferably calculated using a proportional relationship between the passage time of the microchannel and the glycation of red blood cells in the blood.
- the method may further include correcting the calculated degree of glycation of the blood using a user's reference glycated hemoglobin level.
- the first and second electrode parts are each composed of three consecutive electrodes, and the step of measuring the micro-passage time includes a first impedance and a second impedance formed between two consecutive electrodes of the first electrode part; A change in impedance value is measured using a change in the electrical equilibrium state of the third impedance and the fourth impedance formed between two consecutive electrodes of the second electrode part, and the passage of the micro-passage is performed using the change time of the impedance value. It is desirable to calculate the time.
- the degree of glycation can be easily measured using changes in physical properties of erythrocytes according to glycation of erythrocytes.
- the degree of glycation can be determined more stably against external and human factors compared to biochemical measuring equipment. .
- the present invention recognizes minute electrical changes generated by the passage of red blood cells through a simple circuit configuration, and through this, it is possible to determine the degree of glycation of red blood cells.
- the present invention can be directly used for clinical diagnosis by correcting the measured glycated hemoglobin level using the individual reference value.
- the present invention can be popularized as a household measuring device through miniaturization of the measuring device.
- FIG. 1 is a diagram showing the structure of an apparatus for determining the level of glycated hemoglobin according to the present invention.
- FIG. 2 is a diagram showing the structure and principle of a microchannel of the device for determining the level of glycated hemoglobin according to the present invention.
- 3 to 5 are diagrams showing an electrical structure for determining the physical value of red blood cells according to the present invention.
- FIG. 6 is a diagram showing the structure of an apparatus for determining the level of glycated hemoglobin according to the present invention.
- FIG. 7 is a diagram showing the configuration of an apparatus for determining the level of glycated hemoglobin according to the present invention.
- FIG. 8 is a diagram showing the flow of a method for determining the level of glycated hemoglobin according to the present invention.
- FIG. 9 is a diagram showing an example of patient data for managing glycated hemoglobin level according to the present invention.
- FIG. 1 is a diagram showing the structure of an apparatus 100 for determining the level of glycated hemoglobin according to the present invention.
- an apparatus for measuring glycated hemoglobin according to the present invention 100 includes an inlet 110 through which blood flows, a microchannel 130 through which red blood cells in the blood flowing into the inlet 110 pass, and a microchannel 130 ).
- the glycated hemoglobin measuring device 100 is a plate-shaped chip, and a microchannel 130 may be formed between the inlet 110 and the outlet 120 open to the outside on a substrate, and the inlet 110 and the outlet An electrode unit 140 in which a plurality of patterned electrodes are in contact with each other may be formed in the passage 130 between the channels 120 .
- the inlet 110 may have a diameter larger than that of the outlet 120 so as to facilitate blood drop.
- the blood flowing into the inlet 110 through the pump in the main body forms a microchannel. It can be induced to be discharged.
- the electrode unit 140 may be formed in each of the microchannels on the inlet 110 side and the outlet 120 side, and a plurality of electrodes may be disposed at predetermined intervals on each electrode unit 140 .
- the electrodes may be disposed orthogonal to the flow direction of blood in the microchannel, and may be arranged at equal intervals according to the flow direction. Further, the distance between the electrodes may be set based on the size of one red blood cell in order to classify red blood cells passing through the flow path.
- the electrodes in the electrode unit 140 may be configured in two groups of three, and blood is allowed to flow as an electrolyte between the three electrodes in the same group so that current can flow.
- the glycated hemoglobin measuring device 100 determines the degree of glycation by using the passage time of the red blood cells in the microchannel, and uses the change in impedance between electrodes to determine the passage time of the fine red blood cells. This will be described in more detail below.
- FIG. 2 is a diagram illustrating a process of passing through a microchannel of red blood cells according to an embodiment of the present invention.
- red blood cells 5 in blood have elasticity like normal cells, passages having a width smaller than the general size of red blood cells can pass through by reducing the diameter of the body.
- red blood cells are characterized in that they can change their shape and size according to their original stiffness in order to pass through fine blood vessels together with blood.
- physical stiffness of red blood cells increases when hemoglobin in red blood cells binds to sugar components in blood and becomes glycated, thereby reducing elasticity and becoming harder.
- FIG. 3 is a more enlarged view showing the configuration of the passage 130 of the device according to FIG. 1 in detail.
- electrodes patterned in a direction different from the flow direction, preferably perpendicular to the flow direction, are arranged at predetermined intervals.
- the electrodes may be spaced at equal intervals at positions in contact with the microchannel, and the width of the electrodes may be wider as the distance from the contact position increases, thereby simplifying the circuit configuration.
- the electrodes directly come into contact with the fluid passing through the microchannel and allow current to flow. At this time, the current flowing between the electrodes is affected by the ion concentration of the electrolyte on the microchannel. Specifically, when the red blood cells 5 are positioned between the electrodes, the impedance value changes. That is, the glycated hemoglobin measuring device 100 according to the present embodiment enables the red blood cell 5 to measure the passage time of the microchannel by the change in the impedance value of the electrode unit 140 .
- the passage time of the red blood cells may be calculated by measuring the start time and end time of the passage of the red blood cells in the microchannel and using the difference between the corresponding times.
- the electrode unit 140 may include a first electrode unit 142 on the inlet 110 side and a second electrode unit 144 on the outlet 120 side.
- the first electrode unit 142 measures the passage start time of red blood cells in the first electrode unit 142 as the change in impedance value, and measures the end time of passage of the corresponding red blood cell in the second electrode unit 144 as the change in impedance value. ) and the change time of the impedance value of the second electrode unit 144, the passage time of red blood cells is calculated.
- each electrode unit may be composed of a plurality of electrodes.
- it can be composed of electrodes for measuring the passage start time and electrodes for measuring the passage end time, but by configuring a circuit with more electrodes to measure additional information such as the size and type of passing cells It is also possible.
- each of the first and second electrode units 142 and 144 may include three consecutive electrodes.
- the three consecutive electrodes in the electrode units 142 and 144 generate two impedance value changes, respectively, and the change in each impedance value (Z1, Z2, Z3, Z4) is the inlet 110 side and the outlet ( 120) side.
- impedance values Z1 and Z2 between the three electrodes 142a, 142b, and 142c in the first electrode unit 142 may be sequentially changed according to the order in which red blood cells 5 pass through.
- impedance values Z3 and Z4 of the three electrodes in the second electrode unit 144 may also be sequentially changed according to the order of passage of red blood cells.
- the size and type of passing cells can be inferred according to the degree to which the impedance value is sequentially changed, and through this, a more accurate HbA1c level can be calculated.
- the glycated hemoglobin measuring device 100 uses a change in electrical equilibrium between two resistances of each of the first and second electrode parts and the internal resistance of the glycated hemoglobin measuring body 1000 to change the fine impedance value. can be measured more sensitively.
- the impedance generated through the relationship between the electrode and the flow channel according to FIG. 3 may be configured to have an electrical equilibrium state in a bridge structure according to the circuit configuration of the glycated hemoglobin measuring body 1000 .
- each of the impedances Z1 , Z2 , Z3 , and Z4 on the microchannel of FIG. 3 may correspond to each impedance of a Wheatstone Bridge circuit.
- the bridge circuit may have a balanced state depending on the characteristics of the electrode part, the physical distance, and the circuit configuration, and each impedance value may have a relationship as in the following equation.
- the first impedance and the second impedance formed between the two consecutive electrodes of the first electrode part 142 and the third impedance and the fourth impedance formed between the two consecutive electrodes of the second electrode part 144 The change in is more sensitively measured using the change in the electrical equilibrium state in the Wheatstone bridge circuit, and the micro-passage time can be calculated using the change time.
- the glycated hemoglobin measuring apparatus 100 in this embodiment is a sensor chip composed of the above-described substrate, and may include a main body 1000 coupled with the chip to output the measured result, and may include the chip and It is also possible to miniaturize the entire measuring equipment.
- the main body 1000 provides power so that current flows through the microchannel 130 and the electrode components in the glycated hemoglobin measuring device 100, measures the change time of the impedance value, and calculates the glycated hemoglobin level using the measured time difference. and output through the panel.
- the main body 1000 of the HbA1c device may include a time measurement unit 1100, a HbA1c level calculator 1200, a HbA1c level corrector 1300, and a flow rate forming pump 1400. there is.
- the time measurement unit 1100 measures the change time of the impedance value as red blood cells pass through the microchannel 130 formed in contact with the electrode unit 140 between the blood inlet 110 and the outlet 120, and The micro-passage passage time may be measured using the difference in the change time of the impedance value at the second point of the micro-passage 130 .
- the first point is a point on the first electrode part 142, and may be preferably determined between electrodes or may be defined as a certain area on the microchannel.
- a second point may also be determined on the second electrode unit 144 corresponding to the first point.
- the time measurement unit 1100 calculates the passage time of red blood cells through the microchannel by the difference between the change time of the impedance value of the first electrode part 142 and the change time of the impedance value of the second electrode part 144 .
- the time measuring unit 1100 measures the change time of the impedance value according to the location of red blood cells between at least one pair of electrodes in the first electrode unit 142 and the interval between at least one pair of electrodes in the second electrode unit 144.
- the microchannel passage time can be calculated using the difference in the change time of the impedance value according to the location of the red blood cells.
- the glycated hemoglobin level calculation unit 1200 calculates the degree of glycation of blood by using a correlation between the passage time of the microchannel and the glycation of red blood cells in the blood.
- each red blood cell has a different probability of meeting and combining with a sugar component in the blood depending on the period during which it is produced, the level of glycated hemoglobin of each individual red blood cell may be different.
- the glycated hemoglobin level data of each of the individual red blood cells at the time of measurement may represent a specific data distribution, and a representative value representing the characteristics of the distribution may differ depending on the glycated hemoglobin level.
- the difference between the representative values can be derived by a formula based on sufficiently secured clinical data as a correlation between the passage time of the microchannel and the level of glycated hemoglobin, and the time measurement unit 1100 uses the derived correlation formula
- the glycated hemoglobin level calculator 1200 finally calculates the degree of glycation of blood by using the measured measurement data.
- the glycated hemoglobin level calculator 1200 continuously measures the transit time of red blood cells according to the order in which the red blood cells enter, so that even if several red blood cells enter at once, the transit time of each individual red blood cell is measured. It is possible to calculate the degree of glycation by calculating a correlation equation with high accuracy in time.
- a glycated hemoglobin level correction unit 1300 may be included to correct the level of glycated hemoglobin using a reference level of glycated hemoglobin measured by a user visiting a hospital. At this time, additional information such as the size or type of cells measured by electrodes may be used.
- a structure for inducing movement of red blood cells in the blood from the inlet 110 to the outlet 120 may be formed in the microchannel of FIG. 2 to serve as a flow rate forming pump 1400 .
- the mixed solution composed of blood and electrolyte moves from the inlet 110 to the outlet 120 through the flow rate forming pump 1400 according to the order described with reference to FIG. 2 .
- the measuring unit 1100 measures an electrical signal due to impedance that changes as cells move, and the calculating unit 1200 calculates the level of glycated hemoglobin using the measured value.
- Red blood cells exist in the blood according to their average lifespan, so the lifespan of red blood cells and the level of glycated hemoglobin can be correlated.
- the frequency of red blood cells according to the level of glycated hemoglobin is similar to the frequency of red blood cells according to life span. do.
- the level of glycated hemoglobin of newly born red blood cells decreases and the distribution of red blood cells with relatively low stiffness increases. Such a change may appear as a characteristic of the corresponding distribution.
- the distribution graph of the number of red blood cells according to the stiffness of the red blood cells may show a difference in distribution, as in the case of unmanaged patient A and managed patient B. there is. That is, the similarity between the frequencies of erythrocytes according to the lifespan of erythrocytes is reduced.
- the user's health care status can be objectively determined through the change in the distribution of the HbA1c level data of each of the individual red blood cells calculated by the HbA1c measuring device according to the present embodiment, and the current HbA1c level is a representative value.
- the degree of change in the management state for each user is mutually compared to enable additional prescriptions tailored to the user's characteristics.
- the change time of the impedance value according to the passage of red blood cells in the blood is measured. Measure (S100).
- the change time of the impedance value is measured at the second point of the flow path (S200).
- the first point is determined as at least one position on the area where the first electrode part 142 on the inlet side and the microchannel 130 come into contact
- the second point is determined by the second electrode part 144 on the outlet side and the microchannel ( 130)
- the first or second impedance change time is determined by the position of red blood cells passing through the flow path between a pair of electrodes in the first or second electrode parts 142 and 144. It can be measured as a change in impedance value according to
- the channel passage time is measured using the difference between the measured first impedance change time at the first point and the second impedance change time at the second point (S300).
- the blood glycated hemoglobin level is calculated using a proportional relationship between the measured passage time and the glycation of red blood cells in the blood (S400).
- the calculated glycated hemoglobin level of the blood may be corrected based on the user's standard glycated hemoglobin level to be used for clinical judgment (S500).
- the degree of glycation can be easily measured using changes in physical properties of erythrocytes according to glycation of erythrocytes.
- the degree of glycation can be determined more stably against external and human factors compared to biochemical measuring equipment.
- the present invention recognizes minute electrical changes generated by the passage of red blood cells through a simple circuit configuration, and through this, it is possible to determine the degree of glycation of red blood cells.
- the present invention can be directly used for clinical diagnosis by correcting the measured glycated hemoglobin level using the individual reference value.
- various embodiments described herein may be implemented in a recording medium readable by a computer or a device similar thereto using, for example, software, hardware, or a combination thereof.
- the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs field programmable gate arrays
- It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions.
- the described embodiments may be implemented in the control module itself.
- embodiments such as procedures and functions described in this specification may be implemented as separate software modules.
- Each of the software modules may perform one or more functions and operations described herein.
- the software code may be implemented as a software application written in any suitable programming language.
- the software code may be stored in a memory module and executed by a control module.
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Description
Claims (15)
- 채취된 혈액이 유입되는 유입구;상기 유입구로 유입된 혈액내 적혈구가 개별 단위로 통과하도록 미리 결정된 폭을 갖는 미세 유로;상기 미세 유로를 통과한 적혈구가 배출되는 배출구; 및상기 유입구와 배출구 사이의 미세 유로에 접하여 형성된 복수의 전극부를 포함하고,상기 전극부는 상기 미세 유로를 통과하는 적혈구의 통과 방향에 따라 소정의 간격으로 나열된 복수의 전극을 포함하는 것을 특징으로 하는 당화혈색소 측정 장치.
- 제 1 항에 있어서,상기 전극부는 상기 유입구 측의 제1 전극부와 상기 배출구 측의 제2 전극부로 구성되며,상기 제1 전극부 내 적어도 한 쌍의 전극 사이의 임피던스는 및 상기 제2 전극부 내 적어도 한 쌍의 전극 사이의 임피던스는 상기 적혈구의 통과에 따라 변하는 것을 특징으로 하는 당화혈색소 측정 장치.
- 제 2 항에 있어서,상기 제1 및 제2 전극부는 각각 3개의 연속된 전극으로 구성되고,상기 제1 전극부의 연속된 두 전극 사이에 형성되는 제1 임피던스 및 제2 임피던스의 전기적 평형 상태와, 상기 제2 전극부의 연속된 두 전극 사이에 형성되는 제3 임피던스 및 제4 임피던스의 전기적 평형 상태는 상기 적혈구의 통과에 따라 각각 변하는 것을 특징으로 하는 당화혈색소 측정 장치.
- 혈액 유입구와 배출구 사이의 전극부와 접하여 형성된 미세 유로 상의 제1 지점에서 상기 혈액내 적혈구가 통과함에 따른 임피던스 값의 변화 시간과 상기 미세 유로의 제2 지점에서 임피던스 값의 변화 시간의 차이를 이용하여 상기 적혈구의 미세 유로 통과 시간을 측정하는 시간 측정부; 및상기 측정된 시간을 통하여 상기 혈액 내 적혈구의 당화 정도를 판단하는 당화혈색소 수치 산출부를 포함하는 것을 특징으로 하는 당화혈색소 측정 장치.
- 제 4 항에 있어서,상기 전극부는 상기 유입구 측의 제1 전극부와 상기 배출구 측의 제2 전극부로 구성되며,상기 시간 측정부는 상기 제1 전극부의 임피던스 값의 변화 시간과 상기 제2 전극부의 임피던스 값의 변화 시간의 차이로 상기 적혈구의 미세 유로 통과 시간을 산출하는 것을 특징으로 하는 당화혈색소 측정 장치.
- 제 5 항에 있어서,상기 제1 및 제2 전극부는 복수의 전극으로 구성되고,상기 시간 측정부는 상기 제1 전극부 내 적어도 한 쌍의 전극 사이에 상기 적혈구가 위치함에 따른 임피던스 값의 변화 시간과, 상기 제2 전극부 내 적어도 한 쌍의 전극 사이에 적혈구가 위치함에 따른 임피던스 값의 변화 시간의 차이를 이용하여 상기 미세 유로 통과 시간을 산출하는 것을 특징으로 하는 당화혈색소 측정 장치.
- 제 4 항에 있어서,상기 당화혈색소 수치 산출부는 상기 미세 유로 통과 시간과 상기 혈액 내 적혈구의 당화 간의 비례 관계를 이용하여 혈액의 당화 정도를 산출하는 것을 특징으로 하는 당화혈색소 측정 장치.
- 제 7 항에 있어서,상기 혈액의 당화 정도를 사용자의 기준 당화혈색소 수치를 이용하여 보정하는 당화혈색소 수치 보정부를 더 포함하는 것을 특징으로 하는 당화혈색소 측정 장치.
- 제 6 항에 있어서,상기 제1 및 제2 전극부는 각각 3개의 연속된 전극으로 구성되고,상기 시간 측정부는 상기 제1 전극부의 연속된 두 전극 사이에 형성되는 제1 임피던스 및 제2 임피던스의 전기적 평형 상태와, 상기 제2 전극부의 연속된 두 전극 사이에 형성되는 제3 임피던스 및 제4 임피던스의 전기적 평형 상태의 변화를 이용하여 임피던스 값의 변화를 측정하고, 변화 시간을 이용하여 상기 미세 유로 통과 시간을 산출하는 것을 특징으로 하는 당화혈색소 측정 장치.
- 혈액 유입구와 배출구 사이의 전극부와 접하여 형성된 유로 상의 제1 지점에서 상기 혈액내 적혈구가 통과함에 따른 임피던스 값의 변화 시간을 측정하는 단계;상기 미세 유로의 제2 지점에서 임피던스 값의 변화 시간을 측정하는 단계;상기 측정된 제1 지점의 제1 임피던스 변화 시간과 상기 제2 지점의 제2 임피던스 변화 시간의 차이를 이용하여 유로 통과 시간을 측정하는 단계; 및상기 측정된 유로 통과 시간에 따라 당화혈색소 수치를 산출하는 단계를 포함하는 것을 특징으로 하는 당화혈색소 측정 방법.
- 제 10 항에 있어서,상기 제1 지점은 상기 유입구 측의 제1 전극부와 미세 유로가 접하는 구역 상의 적어도 일 위치로 결정되며,상기 제2 지점은 상기 배출구 측의 제2 전극부와 미세 유로가 접하는 구역 상의 적어도 일 위치로 결정되는 것을 특징으로 하는 당화혈색소 측정 방법.
- 제 11 항에 있어서,상기 제1 또는 제2 임피던스 변화 시간은 상기 제1 또는 제2 전극부 내 한 쌍의 전극 사이에 상기 미세 유로를 통과하는 적혈구가 위치함에 따른 임피던스 값의 변화로 측정되는 것을 특징으로 하는 당화혈색소 측정 방법.
- 제 10 항에 있어서,상기 당화혈색소 수치를 산출하는 단계는 상기 미세 유로 통과 시간과 상기 혈액 내 적혈구의 당화 간의 비례 관계를 이용하여 혈액의 당화 정도를 산출하는 것을 특징으로 하는 당화혈색소 측정 방법.
- 제 10 항에 있어서,상기 산출된 상기 혈액의 당화 정도를 사용자의 기준 당화혈색소 수치를 이용하여 보정하는 단계를 더 포함하는 것을 특징으로 하는 당화혈색소 측정 방법.
- 제 10 항에 있어서,상기 제1 및 제2 전극부는 각각 3개의 연속된 전극으로 구성되고,상기 미세 유로 통과 시간을 측정하는 단계는 상기 제1 전극부의 연속된 두 전극 사이에 형성되는 제1 임피던스 및 제2 임피던스의 전기적 평형 상태와, 상기 제2 전극부의 연속된 두 전극 사이에 형성되는 제3 임피던스 및 제4 임피던스의 전기적 평형 상태의 변화를 이용하여 임피던스 값의 변화를 측정하고,상기 임피던스 값의 변화 시간을 이용하여 상기 미세 유로 통과 시간을 산출하는 것을 특징으로 하는 당화혈색소 측정 방법.
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| CN202180103731.7A CN118159841A (zh) | 2021-09-29 | 2021-12-03 | 利用物理和电特性测量红细胞的糖化、利用其的糖化血红蛋白值测量方法、以及用于执行该方法的装置 |
| JP2024544614A JP7815457B2 (ja) | 2021-09-29 | 2021-12-03 | 物理的・電気的特性を用いた赤血球の糖化測定およびこれを用いた糖化血色素数値の測定方法、並びにこれを行う装置 |
| US18/064,233 US11747348B2 (en) | 2021-09-29 | 2022-12-09 | Apparatus for measuring glycation of red blood cells and glycated hemoglobin level using physical and electrical characteristics of cells, and related methods |
| US18/064,238 US11852577B2 (en) | 2021-09-29 | 2022-12-09 | Apparatus for measuring properties of particles in a solution and related methods |
| US18/364,436 US12019082B2 (en) | 2021-09-29 | 2023-08-02 | Apparatus for measuring glycation of red blood cells and glycated hemoglobin level using physical and electrical characteristics of cells, and related methods |
| US18/364,441 US12013404B2 (en) | 2021-09-29 | 2023-08-02 | Apparatus for measuring glycation of red blood cells and glycated hemoglobin level using physical and electrical characteristics of cells, and related methods |
| US18/520,776 US12025548B2 (en) | 2021-09-29 | 2023-11-28 | Apparatus for measuring properties of particles in a solution and related methods |
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| US18/731,644 US12560522B2 (en) | 2021-09-29 | 2024-06-03 | Apparatus for measuring properties of particles in a solution and related methods |
| US19/287,299 US20260092933A1 (en) | 2021-09-29 | 2025-07-31 | Apparatus for measuring glycation of red blood cells and glycated hemoglobin level using physical and electrical characteristics of cells, and related methods |
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| US18/064,233 Continuation-In-Part US11747348B2 (en) | 2021-09-29 | 2022-12-09 | Apparatus for measuring glycation of red blood cells and glycated hemoglobin level using physical and electrical characteristics of cells, and related methods |
| US18/064,238 Continuation-In-Part US11852577B2 (en) | 2021-09-29 | 2022-12-09 | Apparatus for measuring properties of particles in a solution and related methods |
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