Lateral flow analysis device and system

Abstract

The present invention relates to a lateral flow analysis system comprising: a lateral flow analysis device including a housing, a cartridge guide that supports a cartridge inside the housing in order to accommodate, inside the housing, the cartridge including a sample for lateral flow analysis, a light source for irradiating light of a predetermined wavelength band toward an inspection area of the cartridge accommodated in the cartridge guide, an optical sensor provided to face the light source in order to receive signal light generated in the inspection area of the cartridge because of the light irradiated from the light source, and a central processing unit for converting the signal light received by the optical sensor into data and analyzing same; a strip having the sample for lateral flow analysis; and the cartridge including a light-transmitting unit that is opened in correspondence to the inspection area such that the light irradiated from the light source can be irradiated onto the sample of the strip when the strip is accommodated therein.

Description

Lateral flow analysis device and system

[0001] This invention claims the benefit of Korean Patent Application No. 10-2023-0149908 filed with the Korean Intellectual Property Office on November 2, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a lateral flow analysis device and system, and more particularly, to a system including a lateral flow analysis device and a cartridge, in which a light source and a light sensor are installed facing each other with a cartridge containing a sample to be analyzed interposed therebetween, and which analyzes a signal light generated from light irradiated onto the cartridge.

[0003]

[0004] A lateral flow assay (LFA) is a simple device that detects analytes in fluid samples. Examples include pregnancy test kits, coronavirus self-test kits, and cartridges. These testing methods are easy to use, provide rapid results, and are inexpensive.

[0005] Meanwhile, when a sample to be tested for lateral flow testing is injected into the cartridge, the sample moves along the strip according to capillary action and reacts with the reagent components of the reagent pad to form an analyte complex. The analyte complex further combines with the reagent applied to the test line located within the test area to generate a signal. In addition, the reagent reaction to determine the validity of the test occurs at the control line, and the control line signal can be used to determine whether the sample reaction is normal or the level of background signal for each sample. The signal generated in this way is detected using the naked eye or a separate testing device. When high sensitivity or quantitative analysis is required, fluorescent substances and a testing device capable of measuring them are mainly used.

[0006] A typical lateral flow inspection device using a fluorescence measurement method is configured to irradiate excitation light that can generate fluorescence toward the inspection area where the cartridge inspection line and reference line are located, and measure the signal light in the inspection area with a light sensor located on the same side as the light source. In this case, there are problems such as the difficulty in generating and measuring the maximum signal light at the same time, and the limitation that the light source and light sensor must be a certain height or more from the inspection area, so the size of the inspection device inevitably becomes large. In particular, when multiple inspection and reference lines must be detected, a 2D sensor (CCD or CMOS) is utilized to recognize the positions of the lines, or a driving scanning module that moves the cartridge or sensor / light source is installed. However, in all cases, it can be said that this increases the size of the inspection device and the number of parts, which can increase manufacturing costs.

[0007] The background technology described above is technical information that the inventor possessed for the purpose of deriving embodiments of the present invention or acquired during the derivation process, and cannot necessarily be said to be publicly known technology disclosed to the general public prior to the filing of the embodiments of the present invention.

[0008]

[0009] To solve the above problem, a system including a lateral flow analysis device and a cartridge is provided, in which a light source and a light sensor are installed facing each other with a cartridge containing a sample to be analyzed therebetween, and a signal light generated from light irradiated onto the cartridge is analyzed.

[0010]

[0011] A lateral flow analysis device according to one embodiment of the present invention may include a housing, a cartridge guide for supporting a cartridge inside the housing to accommodate a cartridge for lateral flow analysis inside the housing, a light source for irradiating light of a predetermined wavelength toward an inspection area of ​​a cartridge accommodated in the cartridge guide, a light sensor installed facing the light source to receive a signal light generated in the inspection area of ​​the cartridge due to the light irradiated from the light source, and a central processing unit for analyzing the signal light received by the light sensor by converting it into data.

[0012] According to one embodiment of the present invention, the light source and the light sensor may be arranged as a pair facing each other with the cartridge inspection area interposed therebetween.

[0013] According to one embodiment of the present invention, light irradiated from a light source can be irradiated perpendicularly to a surface on which a cartridge accommodated in a cartridge guide is formed.

[0014] According to one embodiment of the present invention, the light source and the light sensor may be formed in multiple pairs.

[0015] According to one embodiment of the present invention, a plurality of pairs of light sources and light sensors may be formed at each position where an inspection line and a control line formed on a strip of a cartridge located within an inspection area of ​​the cartridge are arranged.

[0016] According to one embodiment of the present invention, a plurality of light sources and light sensors formed in pairs can sequentially turn on and off the light sources so that the light sensors corresponding to the light sources can sequentially obtain signal light.

[0017] According to one embodiment of the present invention, a separate device for enabling relative positional movement between the light source and the light sensor pair and the cartridge may not be included.

[0018] According to one embodiment of the present invention, the distance between the light source and the light sensor can be formed to be 3.5 mm or more and 10 mm or less.

[0019] According to one embodiment of the present invention, only a cartridge guide may be formed between the light source and the light sensor.

[0020] According to one embodiment of the present invention, the wavelength of light irradiated from the light source can be formed to be 100 nm or more and 1,000 nm or less.

[0021] According to one embodiment of the present invention, the optical sensor receives signal light of multiple wavelengths, and the central processing unit can convert the signal light of multiple wavelengths into data.

[0022] According to one embodiment of the present invention, the wavelength of the signal light can be formed to be 100 nm or more and 1,000 nm or less.

[0023] According to one embodiment of the present invention, the light sensor can receive a signal light generated in the inspection area of ​​the cartridge after a predetermined time has elapsed after turning the light source on and off for a set time.

[0024] A lateral flow analysis system according to one embodiment of the present invention includes a lateral flow analysis device according to one embodiment of the present invention, and a cartridge formed in a size corresponding to a cartridge guide and capable of being accommodated in the lateral flow analysis device, wherein the cartridge may include a cartridge comprising a strip in which a sample is provided for lateral flow analysis, and a casing including a light-transmitting portion that is opened corresponding to an inspection area so that light irradiated from a light source can be irradiated to a sample of the strip when the strip is accommodated therein.

[0025] According to one embodiment of the present invention, the strip of the cartridge may include a porous membrane.

[0026] According to one embodiment of the present invention, the strip of the cartridge may include a transparent backing card.

[0027] According to one embodiment of the present invention, the strip of the cartridge may be formed of a structure and material that can transmit light irradiated from a light source of a lateral flow analysis device.

[0028] According to one embodiment of the present invention, the casing of the cartridge may be formed of a structure and material that allows light irradiated from a light source of a lateral flow analysis device to pass through.

[0029] According to one embodiment of the present invention, the light-emitting portion of the cartridge may be formed separately between positions where a plurality of light sources and light sensors face each other in a lateral flow analysis device.

[0030]

[0031] A lateral flow analysis device according to an embodiment of the present invention can alleviate constraints on the positions where light sources and light sensors are placed compared to a device in which a light sensor is placed to receive light irradiated from a light source and reflected through a cartridge.

[0032] In addition, the present invention has an advantage in that it can effectively receive signal light without the need for additional components such as optical lenses or driving modules, by arranging a light sensor that directly receives signal light formed by transmitting light irradiated from a light source through a cartridge.

[0033] Additionally, it has the advantage of being able to analyze various wavelengths through a single optical sensor.

[0034] The effects that can be obtained from the invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention pertains from the description below.

[0035]

[0036] Figure 1 illustrates an exploded view of a lateral flow analysis device according to one embodiment of the present invention.

[0037] FIG. 2 illustrates a perspective view, a plan view, and a side view of a lateral flow analysis device according to one embodiment of the present invention.

[0038] FIG. 3 illustrates an exploded view and a permeability diagram of a lateral flow analysis system according to one embodiment of the present invention.

[0039] FIG. 4 illustrates an exploded view of a cartridge in a lateral flow analysis system according to one embodiment of the present invention.

[0040] FIG. 5 illustrates a perspective view, a plan view, and a side view of a cartridge in a lateral flow analysis system according to one embodiment of the present invention.

[0041] FIG. 6 illustrates a plan view of another embodiment of a cartridge in a lateral flow analysis system according to the present invention.

[0042]

[0043] ※ Explanation of symbols

[0044] 1,110: Lateral flow analysis device 10: Housing

[0045] 20: Cartridge guide 30: Light source

[0046] 31: PCB 1 40: Optical sensor

[0047] 41: Second PCB 50: Central Processing Unit

[0048] 100: Lateral flow analysis system 120: Cartridge

[0049] 121: Strip 122: Casing

[0050] 123: Test line and control line A: Test area

[0051] T: Projector

[0052]

[0053] The present invention will become clearer with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. The present invention is defined solely by the scope of the claims. Meanwhile, the terminology used in this specification is for the purpose of describing the embodiments and is not intended to limit the present invention.

[0054] Throughout this specification, singular forms also include plural forms unless specifically stated otherwise in the text.

[0055] Throughout this specification, the terms "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, operations and / or elements, and do not exclude other components unless specifically stated to the contrary, but rather include other components.

[0056] Additionally, terms such as “unit” described throughout this specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software.

[0057] Additionally, when it is said throughout this specification that a part is "connected" to another part, this includes not only cases where it is "directly connected" but also cases where it is connected "with another structure in between."

[0058]

[0059] Hereinafter, the present invention will be described in more detail.

[0060] FIG. 1 illustrates an exploded view of a lateral flow analysis device (1) according to an embodiment of the present invention, and FIG. 2 illustrates a perspective view, a plan view, and a side view of a lateral flow analysis device (1) according to an embodiment of the present invention.

[0061] Referring to FIGS. 1 and 2, a lateral flow analysis device (1) according to one embodiment of the present invention may include a housing (10), a cartridge guide (20), a light source (30), a light sensor (40), and a central processing unit (50).

[0062] The housing (10) is configured to accommodate each component of the present invention, and has no particular limitations in shape and material. A hole having the cross-sectional shape of a cartridge (120) is formed on one surface of the housing (10) to accommodate a cartridge (120) containing a sample for lateral flow analysis. The housing (10) may be formed by combining one or more components, and as an example, may be formed by combining an upper housing (10) and a lower housing (10) as shown in FIG. 1.

[0063] The cartridge guide (20) is configured to accommodate part or all of the cartridge (120) inside the housing (10), and is configured to support the cartridge (120) inside the housing (10) when the cartridge (120) is inserted into a hole in the shape of the cartridge (120). The inspection area (A) formed in the cartridge (120) must be inserted into the inside of the housing (10), and a part of the cartridge (120) may be formed to protrude without being inserted into the inside of the housing (10).

[0064] When inserting a cartridge (120) into a housing (10), a light source (30) that irradiates light can be spaced apart and placed above the inspection area (A) of the cartridge (120).

[0065] The light source (30) is configured to irradiate light and can irradiate light of a predetermined wavelength toward the inspection area (A) of the cartridge (120) accommodated by the cartridge guide (20). The light irradiated from the light source (30) can penetrate the inspection area (A) of the cartridge (120). The light source (30) can be formed by being joined to a first PCB (31) that transmits an electric signal to the light source (30).

[0066] Here, the wavelength of the light irradiated from the light source (30) can be formed to be 100 nm or more and 1,000 nm or less. Depending on the wavelength of the light irradiated from the light source (30), the wavelength of the signal light formed by penetrating the inspection area (A) of the cartridge (120) can be affected.

[0067] In addition, the light source (30) may be, in one embodiment, an LED light source (30). Here, the LED light source (30) is determined according to the type of fluorescent material that generates a signal. When utilizing lanthanide chelates of samarium (Sm(III)), dysprosium (Dy(III)), europium (Eu(III)), and terbium (Tb(III)) with relatively long fluorescence emission times and large Stokes shifts, a UV LED with a central emission wavelength of 365 nm can be used.

[0068] In the present invention, a light sensor (40) may be further included to receive a signal light formed by light irradiated from a light source (30) passing through the inspection area (A) of the cartridge (120).

[0069] In particular, in the present invention, the light sensor (40) may be formed to face the light source (30), but may be formed to be spaced apart at a predetermined interval with the cartridge (120) interposed therebetween. That is, the light source (30) and the light sensor (40) are formed side by side in one direction so that the light irradiated from the light source (30) can directly receive the signal light generated by transmitting the light through the cartridge (120). The light sensor (40) may be formed by being joined to a second PCB (41) that transmits an electric signal to the light sensor (40).

[0070] Here, the distance between the light source (30) and the light sensor (40) can be formed to be 3.5 mm or more and 10 mm or less.

[0071] Additionally, the light sensor (40) can use a photodiode sensor.

[0072] Meanwhile, the light source (30) and the light sensor (40) can be arranged as a pair facing each other with the cartridge (120) in between. This pair of light source (30) and light sensor (40) has the characteristic of being able to directly receive the light transmitted through the cartridge (120) rather than the light irradiated from the light source (30) being reflected from the cartridge (120).

[0073] The light irradiated from the light source (30) may, in one embodiment, be irradiated perpendicularly to the surface on which the cartridge (120) is formed. More specifically, the light irradiated from the light source (30) may be formed to be vertically incident on one surface of the cartridge (120) accommodated by the cartridge guide (20) formed inside the housing (10). At this time, any method that allows the position of the light source (30) to be arranged perpendicularly to the inspection line and control line formed on the strip (121) of the cartridge (120) located within the inspection area (A) may be applied. In this case, the light sensor (40) may also be arranged at a position facing the light source (30), i.e., at a position that receives the signal light formed on the other surface of the cartridge (120).

[0074] In the lateral flow analysis device (1) according to the present invention, when the light source (30) and the light sensor (40) are arranged at the above location, the restrictions on the location of the light source (30) and the light sensor (40) can be relaxed compared to a device in which the light sensor (40) is arranged so that the light irradiated from the light source (30) receives the light reflected through the cartridge (120).

[0075] In addition, in the lateral flow analysis device (1) according to the present invention, a plurality of light sources (30) and light sensors (40) may be formed. More specifically, a pair of light sources (30) and light sensors (40) may be respectively arranged at each position where the test line and control line formed on the strip (121) of the cartridge (120) located within the test area (A) of the cartridge (120) accommodated inside the housing (10) are arranged. This means that a plurality of pairs of light sources (30) and light sensors (40) may be arranged depending on the positions of the test line and control line (123) formed on the strip (121) of the cartridge (120).

[0076] In addition, when a plurality of light sources (30) and light sensors (40) are arranged, instead of simultaneously turning on the plurality of light sources (30) to simultaneously acquire signal light, the plurality of light sources (30) are sequentially turned on and off so that the plurality of light sensors (40) can sequentially acquire the corresponding signal light.

[0077] Meanwhile, a separate device that enables relative positional movement between the light source (30) and the light sensor (40) pair and the cartridge (120) may not be included. In the case where a plurality of light sources (30) and light sensors (40) are formed without moving the light source (30) and the light sensor (40) pair or the cartridge (120) to a predetermined position so that the light source (30) and the light sensor (40) pair can correspond to the positions of the inspection line and the control line formed on the strip (121) of the cartridge (120) located within the inspection area (A) of the cartridge (120), the light source (30) and the light sensor (40) can be formed by fixing them without a separate moving device.

[0078] In addition, in the lateral flow analysis device (1) according to an embodiment of the present invention, no other components except the cartridge guide (20) may be formed between the light source (30) and the optical sensor (40). In a typical lateral flow analysis device (1), a separate additional optical lens or other component is installed between the light source (30) that irradiates light to the cartridge (120) and the optical sensor (40) that receives the irradiated light, so as to more effectively receive the signal light reflected from the cartridge (120). However, in the present invention, there is an advantage in that the signal light can be effectively received without a separate additional configuration by arranging the optical sensor (40) that directly receives the signal light formed by transmitting the light irradiated from the light source (30) through the cartridge (120).

[0079] According to one embodiment of the present invention, a lateral flow analysis device (1) may further include a central processing unit (50) that converts the signal light received from the optical sensor (40) into data and analyzes it. The central processing unit (50) analyzes the wavelength of the signal light received from the optical sensor (40) and can confirm the presence or absence of a disease or result to be diagnosed through previously input data.

[0080] According to the above configuration, the lateral flow analysis device (1) according to one embodiment of the present invention has the advantage of being able to analyze various wavelengths through a single optical sensor (40). More specifically, the optical sensor (40) receives signal light of multiple wavelengths generated when light irradiated from the light source (30) passes through the sample of the cartridge (120), and the central processing unit (50) can convert the signal light of multiple wavelengths into data. By simultaneously using fluorescent emitting materials of various signal light wavelengths, multiple analysis can be performed to analyze multiple analyte substances at once on a single inspection line. For example, when a quantum dot fluorescent material is used, the excitation light uses a UV LED, and the wavelengths of various signal lights can be selected from 400 nm to 700 nm.

[0081] In addition, the lateral flow analysis device (1) according to one embodiment of the present invention is capable of lateral flow analysis through a time-resolved fluorescence (TRF) method. Time-resolved fluorescence has the advantage of minimizing noise caused by the light source (30) by turning the light source (30) on and off to irradiate light from the light source (30) for a set period of time and measuring the signal light generated after a predetermined period of time has elapsed. A fluorescent material such as europium (Eu(III)) chelate can be used in the time-resolved fluorescence method.

[0082] Meanwhile, a lateral flow analysis system (100) according to an embodiment of the present invention may include a lateral flow analysis device (110) according to an embodiment of the present invention described above and a cartridge (120) inserted into the device.

[0083] Here, the cartridge (120) may be composed of a strip (121) in which a sample is received and a biochemical reaction occurs, and a casing (122) that receives the strip and allows the user to move and transport it. In particular, the casing (122) may have a light-transmitting portion (T) formed corresponding to the inspection area (A) of the lateral flow analysis device (1) according to one embodiment of the present invention. The casing (122) may be formed by combining one or more components, and in one embodiment, may be formed by combining an upper casing (122) and a lower casing (122) as shown in FIG. 4.

[0084] The strip (121) of the cartridge (120) is a portion where a sample for lateral flow analysis is injected and a biochemical reaction occurs. In one embodiment, a plurality of reagent pads (sample pads, conjugate pads, etc.) can be formed by continuously stacking and connecting, and attaching to a membrane and a backing card.

[0085] Here, the strip (121) may include a porous membrane and a porous reagent pad. The injected sample undergoes a reagent reaction as it passes through the membrane and reagent pad by capillary action, effectively detecting the target substance in the sample. The sample may be a variety of samples, such as blood, saliva, urine, nasal swabs, and feces.

[0086] In addition, the strip (121) may be formed of a material that allows light to pass through. Since the lateral flow analysis device (1) according to one embodiment of the present invention is a method in which a light source (30) and a light sensor (40) are arranged facing each other with a cartridge (120) therebetween so that light irradiated from the light source (30) passes through the inspection area (A) of the cartridge (120), the strip (121) may be formed of a material through which light irradiated to the inspection area (A) of the cartridge (120) can easily pass. The inspection area (A) may be where the inspection line and control line (123) of the strip (121) are positioned, and this is where the analyte in the sample reacts with the reagent in the strip (121) to generate a final signal.

[0087] The casing (122) of the cartridge (120) is configured to accommodate the strip (121) inside to facilitate movement, transportation, and storage of the sample. The size and shape of the casing (122) are not particularly limited, and may be manufactured in a shape that is the same as or different from the shape of a general cartridge (120).

[0088] In addition, the casing (122) may include an open light-transmitting portion (T) corresponding to the inspection area (A) so that light irradiated from the light source (30) can be irradiated to the sample of the strip (121) when the strip (121) is accommodated inside the casing (122). In particular, when the casing (122) is formed of an opaque material, the inspection area (A) where the inspection line and control line (123) of the strip (121) are located may be formed transparent or penetrating.

[0089] In addition, the casing (122) may be formed of a material that allows light to pass through. Since the lateral flow analysis device (1) according to one embodiment of the present invention is configured to place a light source (30) and a light sensor (40) facing each other with a cartridge (120) interposed therebetween so that light irradiated from the light source (30) is transmitted to a sample in the cartridge (120), the casing (122) may be formed of a material that allows light irradiated to a sample in the cartridge (120) to easily pass through.

[0090] Meanwhile, FIG. 6 illustrates a plan view according to another embodiment of a cartridge (120) in a lateral flow analysis system (100) according to the present invention.

[0091] Referring to Fig. 6, the light-transmitting portion (T) may be formed in multiple numbers to correspond to multiple light sources (30) and light sensors (40), respectively. That is, when the light sources (30) and light sensors (40) formed in the lateral flow analysis device (110) are formed in multiple pairs, the light-transmitting portion (T) of the cartridge may be formed to be separated between the positions where each pair faces each other. In this case, unnecessary noise signals generated from multiple light sources (30) can be blocked, and even when analyzing multiple target substances in pairs of light sources (30) and light sensors (40), there is an advantage in that adjacent pairs of light sources (30) and light sensors (40) are not influenced by each other and can produce independent results.

[0092]

[0093] Although the present invention has been described above with reference to limited embodiments, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical idea of ​​the present invention and the equivalent scope of the patent claims to be described below by a person having ordinary skill in the art to which the present invention pertains.

Claims

1. Housing; A cartridge guide supporting the cartridge within the housing to accommodate the cartridge for lateral flow analysis within the housing; A light source that irradiates light of a predetermined wavelength toward the inspection area of ​​the cartridge accommodated by the cartridge guide; An optical sensor installed facing the light source to receive a signal light generated in the inspection area of ​​the cartridge due to the light irradiated from the light source; and A lateral flow analysis device including a central processing unit that analyzes and converts the signal light received from the above optical sensor into data.

2. In paragraph 1, The above light source and light sensor, A lateral flow analysis device characterized in that the cartridges are arranged in pairs facing each other with the inspection area between them.

3. In paragraph 2, The light irradiated from the above light source is A lateral flow analysis device characterized in that the cartridge accommodated in the cartridge guide is irradiated perpendicularly to the surface on which it is formed.

4. In paragraph 2, The above light source and light sensor, A lateral flow analysis device characterized by being formed in multiple pairs.

5. In paragraph 4, The light source and light sensor formed in multiple pairs, A lateral flow analysis device characterized in that the test line and the control line formed on the strip of the cartridge located within the test area of ​​the cartridge are respectively formed at each position.

6. In paragraph 4, The light source and light sensor formed in multiple pairs, A lateral flow analysis device characterized in that the light source is sequentially turned on and off so that the light sensor corresponding to the light source sequentially acquires the signal light.

7. In paragraph 4, A lateral flow analysis device characterized in that it does not include a separate device that enables relative positional movement between the light source and the light sensor pair and the cartridge.

8. In paragraph 1, The distance between the light source and the light sensor is A lateral flow analysis device characterized in that it is formed to be 3.5 mm or more and 10 mm or less.

9. In paragraph 1, Between the above light source and the light sensor, A lateral flow analysis device characterized in that only the above cartridge guide is formed.

10. In paragraph 1, The wavelength of light irradiated from the above light source is A lateral flow analysis device characterized in that it is formed to be 100 nm or more and 1,000 nm or less.

11. In paragraph 1, The above optical sensor receives the signal light of multiple wavelength bands, A lateral flow analysis device characterized in that the central processing unit converts the signal light of the plurality of wavelength bands into data.

12. In paragraph 11, The wavelength of the above signal light is A lateral flow analysis device characterized in that it is formed to be 100 nm or more and 1,000 nm or less.

13. In paragraph 1, The above optical sensor, A lateral flow analysis device characterized in that it receives a signal light generated in the inspection area of ​​the cartridge after a predetermined time has elapsed after turning the light source on and off for a set period of time.

14. A lateral flow analysis device according to any one of paragraphs 1 to 13, and A cartridge formed to a size corresponding to the above cartridge guide and capable of being accommodated in the above lateral flow analysis device is included. The above cartridge, A strip equipped with a sample for lateral flow analysis, A lateral flow analysis system comprising a casing including a light-transmitting portion that is open corresponding to the inspection area so that light irradiated from the light source can be irradiated to a sample of the strip when the strip is accommodated inside.

15. In paragraph 14, The strip of the above cartridge is, A lateral flow analysis system characterized by including a porous membrane.

16. In paragraph 14, The strip of the above cartridge is, A lateral flow analysis system characterized by including a transparent backing card.

17. In paragraph 14, The strip of the above cartridge is, A lateral flow analysis system characterized in that it is formed of a structure and material that can transmit light irradiated from the light source of the lateral flow analysis device.

18. In paragraph 14, The casing of the above cartridge is, A lateral flow analysis system characterized in that it is formed of a structure and material that can transmit light irradiated from the light source of the lateral flow analysis device.

19. In paragraph 14, The light-emitting part of the above cartridge is, A lateral flow analysis system characterized in that a plurality of the light sources and light sensors are formed separately between positions facing each other in the lateral flow analysis device.

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