CN111077306A - Quantitative detection analyzer for fluorescence immunoassay reagent and detection method thereof - Google Patents
Quantitative detection analyzer for fluorescence immunoassay reagent and detection method thereof Download PDFInfo
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- CN111077306A CN111077306A CN201911402777.XA CN201911402777A CN111077306A CN 111077306 A CN111077306 A CN 111077306A CN 201911402777 A CN201911402777 A CN 201911402777A CN 111077306 A CN111077306 A CN 111077306A
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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
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/558—Immunoassay; Biospecific binding assay; Materials therefor using diffusion or migration of antigen or antibody
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses a quantitative detection analyzer for a fluorescence immunoassay reagent, which comprises a base and is characterized in that a reagent strip detection mechanism is arranged on the base, a reagent strip conveying assembly for conveying a reagent strip into the reagent strip detection mechanism is arranged on the base on one side of the reagent strip detection mechanism, the reagent strip conveying assembly consists of a reagent strip conveying mechanism and a reagent strip input mechanism, and the reagent strip conveying mechanism is respectively provided with a reagent strip inlet and a reagent strip outlet corresponding to the reagent strip input mechanism and the reagent strip detection mechanism; the problems of unreliability and unstable repeatability of detection data of most products on the market at present are solved by combining peak value calculation and integral area calculation, and high sensitivity and strong stability of detection results are ensured.
Description
Technical Field
The invention relates to a medical detection technology, in particular to a quantitative detection analyzer aiming at a fluorescence immunoassay reagent and a detection method thereof.
Background
At present, there are many analyzers for fluorescent immunoreagents in the market, and these analyzers measure proteins, enzymes, and the like by using fluorescent immunoreagents, and most of them are qualitative tests. The separation of the analytes in the reagent matrix is carried out by paper chromatography, and the target analytes are captured by means of specific antibodies fixed on the surface of a chromatographic strip, and then the difference of the intensity of the fluorescence quantity emitted by the target analytes is detected by using an instrument for qualitative analysis of the detected samples.
The existing analyzer for fluorescence immunoassay reagent has the following defects: the fluorescence quantity emitted by the reagent is several orders of magnitude smaller than the exciting light quantity, and the detection system is very unstable, so that the stability of the detection result is poor. In addition, the data analysis method for the detection data is too single or simple, and the situation of data boundary unconvergence exists through single peak value calculation or curve integral area calculation, because a large number of background signals exist in the data, and the background signals are not different from the peak value of the C line, so that the reliability of the calculation result is not high. The method has the defect of strong correlation between a calculation result and a detection system.
In addition, in the conventional diagnostic test, a large amount of time is wasted in sample transportation, pretreatment, organization, marking, recording, distribution and the like, and the ratio of core reaction time to analysis time is extremely low.
Therefore, it is necessary to provide a rapid, accurate, highly sensitive, and stable quantitative detection analyzer for a fluorescence immunoassay reagent and a detection method thereof.
Disclosure of Invention
The purpose of the invention is realized by the following technical scheme:
the invention provides a quantitative detection analyzer for a fluorescence immunoassay reagent, which comprises a base, wherein a reagent strip detection mechanism is arranged on the base, a reagent strip conveying assembly for conveying a reagent strip into the reagent strip detection mechanism is arranged on the base on one side of the reagent strip detection mechanism, the reagent strip conveying assembly consists of a reagent strip conveying mechanism and a reagent strip input mechanism, and the reagent strip conveying mechanism is respectively provided with a reagent strip inlet and a reagent strip outlet corresponding to the reagent strip input mechanism and the reagent strip detection mechanism:
the reagent strip conveying mechanism comprises a hollow fixed disk fixedly arranged on a base, a reagent disk is coaxially and rotatably arranged in the hollow fixed disk, a plurality of reagent strip accommodating grooves arranged along the radial direction of the reagent disk are fixed on the reagent disk, a rotating shaft is fixedly inserted in the axial center of the reagent disk, the top end of the rotating shaft penetrates through the hollow fixed disk and is provided with a rotating gear, the rotating gear is connected with a first driving mechanism, and the first driving mechanism is arranged on the base;
the reagent strip input mechanism comprises supporting plates symmetrically arranged at two sides of a reagent strip inlet, a plurality of conveying wheels for conveying the reagent strips to the reagent strip inlet are erected between the supporting plates at equal intervals, the conveying wheel at one end, far away from the reagent strip inlet, of the supporting plate is connected with a second driving mechanism, and a bar code instrument extending to the upper part of the conveying wheel is arranged above the second driving mechanism;
the reagent strip detection mechanism comprises a detection platform in butt joint with a reagent strip outlet, the bottom end of the detection platform is arranged on the base through a mounting seat, a detector is arranged on the detection platform, and a transfer mechanism used for moving the reagent strip from a reagent strip accommodating groove to the detection platform is arranged between the detection platform and the reagent strip conveying mechanism.
Preferably, the first driving mechanism comprises a first motor installed on the base, a driving gear is sleeved on an output shaft of the first motor, and the driving gear drives the rotating gear to rotate through a belt.
Preferably, actuating mechanism two is including inserting the dwang of locating in the backup pad on keeping away from the transport wheel axle center of reagent strip entry, the backup pad that corresponds one side is passed to dwang one end is provided with motor two, be provided with firm board on motor two's the output shaft, firm board bottom is connected fixedly with the base, firm board is provided with stop gear towards backup pad one end, stop gear is including coaxial the planetary reducer who sets up in motor two's output shaft, be fixed with the commentaries on classics board on planetary reducer's the gear ring, firm board lies in to change to articulate between board and the reagent strip entry and is provided with the spacing limiting plate to the reagent dish, set up on the limiting plate with changeing board assorted and push away the groove, be provided with the planar spring that is used for the restoration between limiting plate and the firm board.
Preferably, transfer the mechanism including fixing the removal rail on examining test table below base, it extends to hollow fixed disk below to remove rail one end, it is provided with the transfer cylinder to slide on the removal rail, the opening has been seted up to the corresponding transfer cylinder in hollow fixed disk bottom, it is used for making the moving mechanism that the moving cylinder removed along removing the rail to be provided with on the removal rail, moving mechanism is including setting up motor three on the mount pad and parallel and by the three driven belts of motor with removing the rail, belt and transfer cylinder lower part fixed connection.
The invention also provides a quantitative detection method aiming at the fluorescent immune reagent, which comprises the following steps:
inserting the test agent strip into a reagent input mechanism, scanning a two-dimensional bar code on the test agent strip by a bar code instrument, and acquiring information such as detection time, validity period, fitting curve parameters of an output result and the like of the test agent strip;
rotating a reagent disk of the reagent strip conveying mechanism to enable the empty reagent strip accommodating groove to be aligned with the reagent strip inlet, and conveying the reagent strips to be tested into the empty reagent strip accommodating groove through the conveying wheel to wait;
after the detection time is up, the reagent disk rotates to enable the reagent strip accommodating groove where the reagent strip to be detected is located to align to the reagent strip outlet, so that the reagent strip enters the reagent strip detection mechanism through the transfer mechanism for detection;
the detector collects an optical signal of the reagent strip to be tested, sends the optical signal to the controller and pushes the reagent strip to be tested out of the reagent strip detection mechanism;
the controller processes and analyzes the received optical signals to obtain concentration values, and automatically outputs and stores the concentration values.
Preferably, the controller converts the optical signal into a voltage-time two-dimensional graph after receiving the optical signal, automatically identifies a T-line peak value a1, a C-line peak value a2 and a peak-valley value between the C-line peak value and the T-line peak value on the two-dimensional graph, and determines a background signal value B according to a relationship between the three values;
the controller respectively calculates the areas of the C line and the T line on the horizontal line where the background signal value B is positioned, and the areas are respectively marked as SCAnd ST；
The controller is based on the formula
And
calculating an area ratio S and a peak value ratio A;
the controller calculates a concentration value C according to a formula C which is K multiplied by S + (1-K) multiplied by B, wherein K is more than or equal to 0 and less than 1.
Preferably, after the controller identifies a peak-valley value between a peak value of a line C and a peak value of a line T on the two-dimensional graph, a point between the abscissa and the peak-valley value is taken as a background signal value B;
the controller respectively takes a C line peak value and a T line peak value as a middle value to obtain a region, and automatically calculates the areas of the C line and the T line on a horizontal line where the background signal value B is located in the region.
Preferably, the zone length is 500 ms.
The quantitative detection analyzer and the detection method thereof aiming at the fluorescence immunoassay reagent provided by the invention have the following beneficial effects:
(1) the invention reserves the most core steps of sampling, analyzing, quality controlling and outputting, thereby reducing the diagnosis time and obtaining the greatest convenience for patients;
(2) the invention solves the problems of unreliability and unstable repeatability of detection data of most products on the market at present by combining peak value calculation and integral area calculation, and ensures high sensitivity and strong stability of detection results.
Drawings
FIG. 1 is a schematic perspective view of a quantitative measurement analyzer according to the present invention;
FIG. 2 is a schematic top view of the quantitative determination analyzer of the present invention;
FIG. 3 is a voltage-time two-dimensional plot of optical signal acquisition for a test strip of the present invention;
fig. 4 is a block flow diagram of the present invention.
In the figure, a base 1, a reagent strip inlet 2, a reagent strip outlet 3, a hollow fixed disk 4, a reagent disk 5, a reagent strip accommodating groove 6, a rotating shaft 7, a rotating gear 8, a supporting plate 9, a conveying wheel 10, a bar code instrument 11, a motor I12, a motor II 13, a stabilizing plate 14, a limiting plate 15, a rotating plate 16, a moving rail 17, a transfer cylinder 18, a motor III 19, a detector 20 and a detection table 21 are arranged.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The following examples are merely illustrative and explanatory of the present invention and should not be construed as limiting the scope of the invention. All the technologies realized based on the above-mentioned contents of the present invention are covered in the protection scope of the present invention.
Unless otherwise indicated, the raw materials and reagents used in the following examples are all commercially available products or can be prepared by known methods.
Inserting a reagent strip to be tested into a reagent strip input mechanism, scanning a two-dimensional bar code on the reagent strip by a bar code instrument 11 to obtain information such as detection time, expiration date, fitting curve parameters of an output result and the like of the reagent strip to be tested, rotating a reagent disk 5 while the bar code instrument 11 works to enable a reagent strip accommodating groove 6 which is arranged above the reagent disk 5 to rotate to a reagent strip inlet 2, enabling a motor II 13 to be out of work when the reagent disk 5 rotates, driving a conveying wheel 10 to move the reagent strip to be tested into the reagent strip accommodating groove 6 through the reagent strip inlet 2 by the motor II 13 after the reagent strip accommodating groove 6 which is arranged above the reagent disk 5 rotates to the reagent strip inlet 2, driving the conveying wheel 10 by the motor II 13, enabling a rotating shaft of the motor II 13 to provide power for a sun wheel of a planetary reducer, providing power for a rotating plate 16 by a gear ring of the planetary reducer, rotating the rotating plate 16 to clamp a limiting plate 15 into the reagent strip inlet 2, when the to-be-tested reagent strip completely enters the reagent strip accommodating groove 6, the second motor 13 stops running, the planar spring recovers deformation to drive the rotating plate 16 to rotate and reset, so that the limiting plate 15 is separated from the reagent disk 5 and does not conflict with the reagent disk 5, the first motor 12 can drive the reagent disk 5 to rotate, the reagent strip accommodating groove 6 where the to-be-tested reagent is located is rotated to the reagent strip outlet 3, the rod head of the piston rod of the transfer cylinder 18 is located in the notch and is in conflict with the to-be-tested reagent strip, the transfer cylinder 18 is driven by the third motor 19 to move the to-be-tested reagent strip to the detector 20 along the moving rail 17, finally the to-be-tested reagent strip is moved into the detection area of the detector 20, the controller controls the detector 20 to collect the fluorescence light signals of the to-be-tested reagent strip by means of reflection of light, after collection. The controller receives the optical signal, converts the optical signal into a voltage-time two-dimensional curve graph, automatically identifies a T-line peak value A1, a C-line peak value A2 and a T-line peak value and a C-line peak value to determine a background signal value B, respectively calculates the areas of a C line and a T line on a horizontal line where the background signal value B is located, then calculates an area ratio S and an area ratio A, calculates a concentration value C according to a formula C which is K multiplied by S + (1-K) multiplied by B, and outputs and stores the concentration value C in a reporting mode.
The fast diagnosis reagent for immunofluorescence chromatography is mainly characterized by that the specific antigen or antibody is coated on the detection line T of NC membrane in the form of strip, the fluorescence-labeled antigen or antibody is adsorbed on the binding pad, after the sample to be tested is added on the loading pad hole of one end of the test paper strip, it can be moved forward by means of capillary action to dissolve the fluorescence-labeled antigen or antibody on the binding pad, then it can be moved to the detection line of coated antigen or antibody, if the sample contains correspondent antibody or antigen, the antigen or antibody and fluorescence-labeled substance coated on the detection line can be combined with correspondent antibody or antigen in the sample to form immune complex, and the fluorescence-labeled substance can be enriched in the detection line to form a detection line capable of producing fluorescence by means of excitation. If no corresponding antibody exists in the sample to be detected on the test strip to be detected, the fluorescent marker cannot be combined with the antigen or the antibody coated on the detection line, the fluorescent marker cannot be enriched, and the detection line capable of generating fluorescence cannot appear on the detection line. When the sample and the dissolved fluorescent marker continuously move upwards to the control line, the sample and the dissolved fluorescent marker are combined with the specific antibody or antigen coated at the control line, an immune complex is formed on the control line, and a control line which generates fluorescence through excitation appears, wherein the T line is a detection line which uses excitation light to excite fluorescence, the T line is a control line which uses excitation light to excite fluorescence, and the detection sample is negative if only the C line exists and the T line does not exist; if the line C does not exist, no matter whether the line T exists or not, the detection is invalid, and the detection needs to be carried out again; if the C line and the T line exist at the same time, the sample is positive, and then the concentration value of the detected object in the detected sample can be obtained by a certain calculation method according to the color depth of the C line and the T line.
The working principle of the fluorescence immunoassay analyzer is that a reacted reagent strip to be tested (matched with a fluorescence immunoassay reagent) is inserted into the device (fluorescence immunoassay analyzer), the reagent strip to be tested is transferred to a reagent strip conveying mechanism by a reagent strip input mechanism and finally enters a reagent strip detection mechanism, and the reagent strip to be tested (a marker and a binding area of a substance to be tested) is automatically scanned by a detector to obtain a (fluorescence) optical signal. Then the optical signal is measured and analyzed to obtain the concentration of the measured substance quantitatively, and the detection result can be automatically output and stored. The fluorescence immunoassay analyzer is mainly used for being matched with a fluorescence immunoassay reagent to quickly and accurately obtain an experimental result.
Example 1
The invention provides a quantitative detection analyzer for a fluorescence immunoassay reagent (see fig. 1-2), which comprises a base 1, wherein a reagent strip detection mechanism is arranged on the base 1, a reagent strip conveying assembly for conveying a reagent strip into the reagent strip detection mechanism is arranged on the base 1 at one side of the reagent strip detection mechanism, the reagent strip conveying assembly consists of a reagent strip conveying mechanism and a reagent strip input mechanism, and the reagent strip conveying mechanism is respectively provided with a reagent strip inlet 2 and a reagent strip outlet 3 corresponding to the reagent strip input mechanism and the reagent strip detection mechanism:
the reagent strip conveying mechanism comprises a hollow fixed disk 4 fixedly arranged on a base 1, a reagent disk 5 is coaxially and rotatably arranged in the hollow fixed disk 4, a plurality of reagent strip accommodating grooves 6 arranged along the radial direction of the reagent disk 5 are fixed on the reagent disk 5, a rotating shaft 7 is fixedly inserted in the axis of the reagent disk 5, the top end of the rotating shaft 7 penetrates through the hollow fixed disk 4 and is provided with a rotating gear 8, the rotating gear 8 is connected with a first driving mechanism, and the first driving mechanism is arranged on the base 1;
the reagent strip input mechanism comprises supporting plates 9 symmetrically arranged at two sides of a reagent strip inlet 2, a plurality of conveying wheels 10 used for conveying reagent strips to the reagent strip inlet 2 are erected between the supporting plates 9 at equal intervals, the conveying wheel 10, far away from one end of the reagent strip inlet 2, of the supporting plate 9 is connected with a second driving mechanism, and a bar code instrument 11 extending above the conveying wheel 10 is arranged above the second driving mechanism;
reagent strip detection mechanism includes the detection platform 21 of 3 docks with the reagent strip export, it sets up on base 1 through the mount pad to detect platform 21 bottom, it is provided with detector 20 on the platform 21 to detect, it is provided with the transfer mechanism that is used for moving the reagent strip to detecting platform 20 from reagent strip holding tank 6 to detect between platform 21 and the reagent strip transport mechanism.
The first driving mechanism comprises a first motor 12 installed on the base 1, a driving gear is sleeved on an output shaft of the first motor 12, and the driving gear drives the rotating gear 8 to rotate through a belt.
The second driving mechanism comprises a rotating rod inserted in the axis of a conveying wheel 10 which is arranged on the supporting plate 9 and far away from the reagent strip inlet 2, one end of the rotating rod penetrates through the supporting plate 9 on one side to be provided with a second motor 13, a stabilizing plate 14 is arranged on an output shaft of the second motor 13, the bottom end of the stabilizing plate 14 is fixedly connected with the base 1, the stabilizing plate 14 is provided with a limiting mechanism towards one end of the supporting plate 9, the limiting mechanism comprises a planetary reducer which is coaxially arranged on the output shaft of the second motor 13, a rotating plate 16 is fixed on a gear ring of the planetary reducer, the stabilizing plate 14 is positioned between the rotating plate 16 and the reagent strip inlet 2 and is hinged with a limiting plate 15 limiting the reagent disk 5, a pushing groove matched with the rotating plate 16 is formed in the limiting plate 15, and a plane spring used for resetting is arranged between the limiting plate 15 and the.
Transfer mechanism is including fixing the removal rail 17 on examining test table 21 below base, remove rail 17 one end and extend to hollow fixed disk 4 below, it is provided with transfer cylinder 18 to slide on the removal rail 17, hollow fixed disk 4 bottom corresponds and shifts cylinder 18 and has seted up the opening, be provided with on the removal rail 17 and be used for making the moving cylinder 18 along the moving mechanism who removes rail 17 and remove, moving mechanism is including setting up motor three 19 on the mount pad and with remove the parallel belt that just is driven by motor three 19 of rail 17, the belt with transfer cylinder 18 lower part fixed connection.
The invention also provides a quantitative detection method for the fluorescent immunoreagent, which comprises the following steps (shown in figure 4):
inserting a test strip into a reagent input mechanism, scanning a two-dimensional bar code on the test strip by a bar code instrument 11, and acquiring information such as detection time, validity period, fitting curve parameters of an output result and the like of the test strip;
the reagent disk 5 of the reagent strip conveying mechanism rotates to enable the empty reagent strip containing groove to be aligned to the reagent strip inlet 2, and the reagent strips to be tested are conveyed into the empty reagent strip containing groove through the conveying wheel 10 to wait;
after the detection time is up, the reagent disk 5 rotates to enable the reagent strip accommodating groove 6 where the reagent strip to be detected is located to align with the reagent strip outlet 3, so that the reagent strip enters the reagent strip detection mechanism through the transfer mechanism for detection;
the detector 20 collects optical signals of the reagent strip to be tested and sends the optical signals to a controller (the controller is a conventional industrial personal computer which is externally arranged), the detector 20 adopts a light source of 820nm as an emission light source and adopts a light path radiation mode to collect the optical signals of the reagent strip to be tested, and in order to ensure that the detector 20 can effectively collect the optical signals (fluorescence) of the reagent strip to be tested, a light filter with a specific fluorescence wavelength is added at a receiving end of the detector 20, so that only the fluorescence to be detected can be received by the receiving end of the detector 20 through the light filter, and the reagent strip to be tested is pushed out of the reagent strip detection mechanism;
the controller receives the optical signal and converts the optical signal into a voltage-time two-dimensional graph (the vertical coordinate is voltage, the horizontal coordinate is time, see fig. 3), automatically identifies a T-line peak value A1, a C-line peak value A2 and a peak-valley value between the C-line peak value and the T-line peak value on the two-dimensional graph, and takes one point between the horizontal coordinate and the peak-valley value as a background signal value B;
the controller respectively takes a region with the peak value of the C line and the peak value of the T line as the middle value, the length of the region is 500ms (when the intersection points of the two ends of the region and the C line or the T line are positioned below the B line, the controller can respectively move for 500ms in the peak direction of the C line or the T line by taking the peak-valley value as the starting point, thereby obtaining the peak value of the C line or the T lineRegion), automatically calculating the areas of the C line and the T line on the horizontal line of the background signal value B in the region, and respectively recording as SCAnd ST；
The controller is based on the formula
And
calculating an area ratio S and a peak value ratio A;
the controller calculates a concentration value C according to a formula C which is K multiplied by S + (1-K) multiplied by B, wherein K is more than or equal to 0 and less than 1, and outputs and stores the concentration value C in a report form.
The foregoing is only a preferred embodiment of the present invention. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a quantitative determination analysis appearance to fluorescence immunoassay reagent, includes the base, its characterized in that, be provided with reagent strip detection mechanism on the base, be provided with on the base of reagent strip detection mechanism one side and be used for carrying the reagent strip conveying assembly to the reagent strip detection mechanism in, reagent strip conveying assembly transports mechanism and reagent strip input mechanism by the reagent strip and constitutes, reagent strip transports the mechanism and corresponds reagent strip input mechanism and reagent strip detection mechanism and has seted up reagent strip entry and reagent strip export respectively:
the reagent strip conveying mechanism comprises a hollow fixed disk fixedly arranged on a base, a reagent disk is coaxially and rotatably arranged in the hollow fixed disk, a plurality of reagent strip accommodating grooves arranged along the radial direction of the reagent disk are fixed on the reagent disk, a rotating shaft is fixedly inserted in the axial center of the reagent disk, the top end of the rotating shaft penetrates through the hollow fixed disk and is provided with a rotating gear, the rotating gear is connected with a first driving mechanism, and the first driving mechanism is arranged on the base;
the reagent strip input mechanism comprises supporting plates symmetrically arranged at two sides of a reagent strip inlet, a plurality of conveying wheels for conveying the reagent strips to the reagent strip inlet are erected between the supporting plates at equal intervals, the conveying wheel at one end, far away from the reagent strip inlet, of the supporting plate is connected with a second driving mechanism, and a bar code instrument extending to the upper part of the conveying wheel is arranged above the second driving mechanism;
the reagent strip detection mechanism comprises a detection platform in butt joint with a reagent strip outlet, the bottom end of the detection platform is arranged on the base through a mounting seat, a detector is arranged on the detection platform, and a transfer mechanism used for moving the reagent strip from a reagent strip accommodating groove to the detection platform is arranged between the detection platform and the reagent strip conveying mechanism.
2. The quantitative detection analyzer for the fluoroimmunoassay reagent of claim 1, wherein the first driving mechanism comprises a first motor installed on the base, an output shaft of the first motor is sleeved with a driving gear, and the driving gear drives the rotating gear to rotate through a belt.
3. The quantitative determination analyzer for fluoroimmunoassay reagents according to claim 1, it is characterized in that the second driving mechanism comprises a rotating rod which is inserted on the axle center of the conveying wheel of the supporting plate far away from the inlet of the reagent strip, one end of the rotating rod is provided with a second motor through the supporting plate at the corresponding side, the output shaft of the second motor is provided with a stabilizing plate, the bottom end of the stabilizing plate is fixedly connected with the base, one end of the stabilizing plate, which faces the supporting plate, is provided with a limiting mechanism, the limiting mechanism comprises a planetary reducer coaxially arranged on an output shaft of the motor II, a rotating plate is fixed on a gear ring of the planetary reducer, a limiting plate for limiting the reagent disk is hinged between the rotating plate and the reagent strip inlet of the stabilizing plate, the limiting plate is provided with a pushing groove matched with the rotating plate, and a planar spring for resetting is arranged between the limiting plate and the stabilizing plate.
4. The quantitative detection analyzer for the immunofluorescent reagent according to claim 1, wherein the transfer mechanism comprises a moving rail fixed on a base below the detection table, one end of the moving rail extends to the lower portion of the hollow fixed disk, a transfer cylinder is arranged on the moving rail in a sliding mode, a notch is formed in the bottom end of the hollow fixed disk corresponding to the transfer cylinder, a moving mechanism used for enabling the moving cylinder to move along the moving rail is arranged on the moving rail, the moving mechanism comprises a motor III arranged on the mounting seat and a belt which is parallel to the moving rail and driven by the motor III, and the belt is fixedly connected with the lower portion of the transfer cylinder.
5. The method for quantitatively detecting a fluoroimmunoassay reagent according to any one of claims 1 to 4, comprising the steps of:
inserting the test agent strip into a reagent input mechanism, scanning a two-dimensional bar code on the test agent strip by a bar code instrument, and acquiring information such as detection time, validity period, fitting curve parameters of an output result and the like of the test agent strip;
rotating a reagent disk of the reagent strip conveying mechanism to enable the empty reagent strip accommodating groove to be aligned with the reagent strip inlet, and conveying the reagent strips to be tested into the empty reagent strip accommodating groove through the conveying wheel to wait;
after the detection time is up, the reagent disk rotates to enable the reagent strip accommodating groove where the reagent strip to be detected is located to align to the reagent strip outlet, so that the reagent strip enters the reagent strip detection mechanism through the transfer mechanism for detection;
the detector collects an optical signal of the reagent strip to be tested, sends the optical signal to the controller and pushes the reagent strip to be tested out of the reagent strip detection mechanism;
the controller processes and analyzes the received optical signals to obtain concentration values, and automatically outputs and stores the concentration values.
6. The method of claim 5, wherein the fluorescent immunoassay reagent is a fluorescent immunoassay reagent,
the controller converts the optical signal into a voltage-time two-dimensional curve graph after receiving the optical signal, automatically identifies a T-line peak value A1, a C-line peak value A2 and a peak-valley value between the C-line peak value and the T-line peak value on the two-dimensional curve graph, and determines a background signal value B according to the relationship among the three values;
the controller respectively calculates the areas of the C line and the T line on the horizontal line where the background signal value B is positioned, and the areas are respectively marked as SCAnd ST；
The controller is based on the formula
And
calculating an area ratio S and a peak value ratio A;
the controller calculates a concentration value C according to a formula C which is K multiplied by S + (1-K) multiplied by B, wherein K is more than or equal to 0 and less than 1.
7. The method of claim 6, wherein the controller identifies a peak-to-valley value between the peak value of the line C and the peak value of the line T on the two-dimensional graph, and then takes a point between the abscissa and the peak-to-valley value as the background signal value B;
the controller respectively takes a C line peak value and a T line peak value as a middle value to obtain a region, and automatically calculates the areas of the C line and the T line on a horizontal line where the background signal value B is located in the region.
8. The method of claim 7, wherein the region is 500ms in length.
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