A detection device

Abstract

The application provides a detection device, which comprises a shell and a carrier, the shell and the carrier are detachable, the shell is provided with a socket, the carrier is provided with a test element, the carrier can be inserted into the shell through the socket with the test element in the carrier; wherein, the shell is provided with a blocking structure and a locking structure, the blocking structure and the locking structure are integrated to form a locking component, when the carrier is inserted into the shell and the locking structure locks the position of the carrier, the carrier abuts against the blocking structure. The detection device is very convenient for the operator to install, insert and take out the test element. After the carrier is completely inserted into the shell, the carrier cannot shake, and the carrier is in the same position every time, which can ensure that the first electrode and the second electrode can always contact the mark area of the test element every time, and the detection result can be read every time. The detection device is convenient to assemble and has superior performance.

Description

[0001] CROSS REFERENCE

[0002] This application claims priority to Chinese prior applications, application number: 2021114162232, filing date: November 25, 2021; application number: 2021229195179; filing date: November 25, 2021; and U.S. provisional application, application number 63 / 237,628, filing date: August 27, 2021; and U.K. prior application, application number: 2112371.6 filing date: August 31, 2021, the contents of all of the above applications, including the specification, claims, drawings, are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the field of in vitro rapid detection, in particular to a detection pen for detecting specific substances, such as an electronic detection pen for COVID-19 detection. BACKGROUND

[0004] The following background description is merely some background knowledge, which does not constitute any limitation to the present application.

[0005] Currently, detection devices for detecting whether a sample contains an analyte are widely used in hospitals or at home. These detection devices for rapid diagnosis contain one or more test strips, such as early pregnancy detection, drug abuse detection, etc. These detection devices can obtain a detection result within one minute or at most ten minutes, and have the advantages of convenient and fast operation. The combination of an electronic reader and a test carrier, such as an analytical test strip, can achieve visual reading of the detection result.

[0006] US5580794 discloses a one-time integrated analysis reader and a lateral flow analysis test strip, which uses optical elements in the reader to obtain a detection result by measuring reflected light. However, this device has certain defects. When multiple light-emitting elements irradiate the corresponding areas on the narrow reagent strip, the light reflected or transmitted from the corresponding areas cannot only irradiate a specific one or more light detectors, and the light emitted from the light source can directly enter the light detector, thereby affecting the accuracy of the detection result.

[0007] US7315378 provides a method to solve this problem by setting a baffle between the light-emitting element and the light detector to avoid the light emitted from the light-emitting element directly irradiating the light detector. However, improvements to these devices are still needed, especially when multiple different tests need to be performed on one test strip, the photoelectric detector needs to accurately reflect the signal change on the specific test area, while avoiding the interference of light reflected from other non-test areas.

[0008] Chinese patent CN101650298 discloses an analytical reader for use with an analytical test strip, the reader comprising one or more light sources, the light sources emitting light onto at least two spatially separated regions of the test strip, one or more light detectors for detecting light emitted from each of the two regions of the test strip; to ensure that each light source only illuminates the region of the test strip corresponding to it, each light source is optically isolated by a light-tight baffle, and a sloping member is provided between the light source and the light detector to prevent light from the light source from directly hitting the light detector. The test strip is positioned above the light sources of the reader without covering the light detectors, so that the volume of the reader is relatively large, and in addition, the distance between the light source and the light detector needs to be accurately controlled, and too far a distance will result in the light detector being unable to accept the light reflected by the test strip.

[0009] Chinese patent CN104730229 discloses an electronic detection device for analyzing and processing a test strip of a test, which comprises a first partition and a second partition intersecting each other, the first partition comprising a light source partition and an anti-scattering partition. The light source partition separates a plurality of light sources into two groups at the positions of the light sources, and separates a detection area of the test strip from a blank area, and the anti-scattering partition separates the detection area of the test strip from the blank area, and the second partition separates the light sources from light detectors. In this way, the light interference between the blank area and the detection area, and between the light emitting area and the receiving area, can be prevented.

[0010] Although the above disclosed detection device can perform self-detection and obtain visualized readings, there are still some problems, for example, when the above device is used to detect samples of infectious diseases, it can not be practical or feasible. This is because the samples of infectious diseases need to be collected separately, and cannot be directly received like the electronic early pregnancy.

[0011] Therefore, it is necessary to provide an electronic detection device suitable for samples of infectious diseases, which can obtain visualized readings. SUMMARY

[0012] The present application aims to provide a detection device to solve the problems raised in the above background.

[0013] To achieve the above-mentioned purpose, the technical solution adopted by the present application is a detection device, comprising a shell and a carrier, the shell and the carrier being detachable, the shell being provided with a socket, the carrier having a test element therein, and the carrier being capable of inserting the test element therein into the shell through the socket;

[0014] The shell is internally provided with a locking structure, which comprises a blocking structure and a locking structure, and the blocking structure and the locking structure are integrally formed. When the carrier is inserted into the shell and the locking structure locks the position of the carrier, the carrier abuts against the blocking structure.

[0015] In some modes, the blocking structure is an elastically compressible structure. When the carrier is inserted into the shell, the carrier compresses the blocking structure. When it is necessary to automatically separate the carrier from the shell, the blocking structure is unlocked, and the carrier is automatically ejected out of the shell by relying on the elasticity of the blocking structure.

[0016] In some modes, the abutment of the carrier against the blocking structure includes direct abutment and indirect abutment.

[0017] In some modes, the detection device further comprises an unlocking structure, which is exposed outside the shell.

[0018] In some modes, the unlocking structure is arranged on the locking structure, and the locking structure, the blocking structure and the unlocking structure are integrated, and the three constitute a locking component.

[0019] In some modes, the locking component comprises a lock catch, and the carrier is provided with a slot, and the lock catch can be buckled into the slot to lock the carrier.

[0020] In some modes, the locking component is provided with a fulcrum structure, the lock catch is connected with the fulcrum structure, the unlocking structure and the lock catch are respectively located on two sides, and the fulcrum structure is located between the unlocking structure and the lock catch.

[0021] In some modes, the shell is internally provided with a first fixing column for fixing the locking component, the fulcrum structure of the locking component is connected with a first connecting structure, the first connecting structure is connected with a first hollow body, and the first hollow body has a hole matched with the outside of the first fixing column in the inside, so that the first fixing column can be sleeved on the first fixing column.

[0022] In some modes, the shell is internally provided with a second fixing column, the first hollow body is connected with a second connecting structure, the second connecting structure is connected with a second hollow body, and the second hollow body has a hole matched with the outside of the second fixing column in the inside, so that the second fixing column can be sleeved on the second fixing column.

[0023] In some modes, the position where the lock catch is buckled into the slot is a buckling position, the lock catch is provided with a protruding structure on the side opposite to the buckling position, and when the lock catch is deformed excessively, the protruding structure on the lock catch abuts against the inner wall of the shell.

[0024] In some modes, the unlocking structure comprises an unlocking part and a pressing part, and the pressing part is arranged on the unlocking part.

[0025] In some embodiments, the unlocking portion is arc-shaped, and the arc-shaped unlocking portion includes an arc center facing the inner side of the unlocking structure and an arc center facing the outer side of the unlocking structure.

[0026] In some embodiments, the cross section of the unlocking portion is divided into a first edge, a second edge, and a middle portion, and the unlocking structure with the arc center facing the inner side includes one of the first edge or the second edge closest to the center, the other farthest from the center, and the middle portion between the first edge and the second edge.

[0027] In some embodiments, the middle portion is farthest from the center, and the first edge and the second edge are both closer to the center than the middle portion.

[0028] In some embodiments, one of the first edge or the second edge is closest to the center, the other is farthest from the center, and the middle portion is between the first edge and the second edge.

[0029] When the detection pen is placed horizontally on a table, the tangent line of the edge position of the circular arc formed by the first edge, the middle portion, and the second edge is perpendicular or nearly perpendicular to the horizontal plane.

[0030] In some embodiments, the unlocking structure includes an unlocking portion and a pressing portion, the pressing portion is arranged on the unlocking portion, and the connecting position of the unlocking portion and the fulcrum structure is provided with a reinforcing structure.

[0031] In some embodiments, at least one surface of the unlocking portion is in the same plane as the surface of the lock catch.

[0032] The unlocking portion includes a first side surface and a second side surface, and the first side surface and the second side surface are respectively located near the second edge and the first edge. The lock catch also includes a third side surface and a fourth side surface.

[0033] One of the first side surface and the second side surface of the unlocking portion is in the same plane as one of the third side surface and the fourth side surface of the lock catch, the first side surface and the second side surface of the unlocking portion are both in the same plane as the third side surface and the fourth side surface of the lock catch, or the second side surface of the unlocking portion is in the same plane as the third side surface of the lock catch, and the first side surface of the unlocking portion is not in the same plane as the fourth side surface of the lock catch.

[0034] In some embodiments, the detection pen further includes a resilient structure arranged between the blocking structure and the carrier.

[0035] In some embodiments, the resilient structure is independent, or the resilient structure is integral with the carrier.

[0036] In some modes, the locking structure, the elastic structure, the blocking structure and the unlocking structure are integrated, and the four constitute the locking component.

[0037] In some modes, the locking structure, the elastic structure, the blocking structure and the unlocking structure are integrally formed, and the locking component is made of plastic by integrally injection molding.

[0038] In some modes, the elastic structure is a component with a certain thickness and a bent shape, and a gap is left between the bent parts.

[0039] In summary, the beneficial effects of the present application are: the detection device of the present application is very convenient for the operator to install, insert and take out the test element. The carrier is provided with a holding part, which is convenient for the operator to hold. After the carrier is completely inserted into the shell, the carrier will not shake, and each time the carrier is inserted into the same position, which can ensure that the first electrode and the second electrode can always contact the mark area of the test element, and the detection result can be read each time. The unlocking structure of the locking structure is exposed outside the shell, which is convenient for the operator to directly unlock the carrier from the outside. The lock of the locking structure is not easy to break, and has a long service life. The arc-shaped unlocking part can partially decompose the force to the arc-shaped cross section, so that the arc-shaped unlocking part is not easy to break, and the arc-shaped unlocking part is more suitable for the shell. The outer contour of the pressing part is arc-shaped, which greatly improves the comfort during pressing. The unlocking structure of the present application has high unlocking feedback sensitivity, and appropriate force can complete the unlocking of the carrier. The detection device is easy to assemble, and has superior performance. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a schematic diagram of the overall structure of the detection pen;

[0041] Figure 2 is a schematic diagram of the carrier being taken out in the detection pen;

[0042] Figure 3 is Figure 2 is a schematic diagram of the shell in the explosion state;

[0043] Figure 4 is an exploded view of the carrier;

[0044] Figure 5 is a schematic diagram of the internal structure of the detection pen after the shell is hidden and the corresponding exploded view;

[0045] Figure 6 is a schematic diagram of the carrier being fixed to the second shell by the locking component;

[0046] Figure 7 is a schematic diagram of the carrier being fixed to the second shell by the locking component;

[0047] Figure 8 is a schematic view of a locking member;

[0048] Figure 9 is a bottom view of a locking member;

[0049] Figure 10 are cross-sectional views of two different locking members from Figure 8 in the "A-A" direction, wherein Figure 10 (a) is a cross-sectional view of one locking member, Figure 10 (b) is a cross-sectional view of another locking member. DETAILED DESCRIPTION

[0050] The following further describes the structures involved in the present application or the technical terms used in the present application, which are to be understood and interpreted according to the general terms commonly used in the art, if not otherwise specified.

[0051] detecting

[0052] Detecting refers to assaying or testing for the presence of a substance or material, such as, but not limited to, a chemical, an organic compound, an inorganic compound, a metabolite, a drug or a drug metabolite, an organic tissue or a metabolite of an organic tissue, a nucleic acid, a protein, or a polymer. In addition, detecting refers to testing for the amount of a substance or material. Further, assaying refers to immunoassaying, chemically assaying, enzymatically assaying, and the like.

[0053] sample

[0054] The detection device of the present application or the collected sample includes a biological fluid (e.g., a bodily fluid or a clinical sample). The fluid sample or fluid specimen, or fluid sample or fluid specimen, can be derived from a solid or semi-solid sample, including excretions, biological tissues, and food samples. The solid or semi-solid sample can be converted into a fluid sample using any suitable method, such as mixing, mashing, macerating, incubating, dissolving, or digesting the solid sample using enzymatic action in a suitable solution (e.g., water, a phosphate solution, or other buffer solution). A "biological sample" includes samples derived from animals, plants, and food samples, such as, for example, urine, saliva, blood and its components, spinal fluid, vaginal secretions, semen, feces, sweat, secretions, tissues, organs, tumors, tissue and organ cultures, cell cultures, and media derived from humans or animals. Preferably, the biological sample is urine, and more preferably, the biological sample is saliva. Food samples include food processing materials, end products, meat, cheese, wine, milk, and drinking water. Plant samples include samples derived from any plant, plant tissue, plant cell cultures, and media. An "environmental sample" is derived from the environment (e.g., a fluid sample from a lake or other body of water, a sewage sample, a soil sample, ground water, sea water, and a waste fluid sample). Environmental samples can also include sewage or other waste water.

[0055] Any analyte can be detected using the appropriate detection element or test element of the present application. Preferably, the present application is used to detect small drug molecules in saliva, urine. Of course, any of the above forms of sample can be collected using the collection device of the present application, whether initially in a solid or liquid form, provided that the liquid or fluid sample can be absorbed by the absorbent element. The absorbent element is typically made of an absorbent material, which is initially dry and which is capable of absorbing a liquid or fluid sample by capillary action or other properties of the absorbent material. The absorbent material can be any material that is capable of absorbing a liquid, such as a sponge, filter paper, polyester fiber, gel, non-woven fabric, cotton, polyester film, yarn, etc. Of course, the absorbent element need not be made of an absorbent material, but can be made of a non-absorbent material, but have holes, threads, cavities, etc. in the absorbent element that can collect the sample, which is typically a solid or semi-solid sample that is packed into the threads, cavities, or holes.

[0056] Downstream and Upstream

[0057] Downstream and upstream are defined with respect to the direction of flow of a liquid, which typically flows from an upstream region to a downstream region. A downstream region receives liquid from an upstream region, and liquid can also flow from an upstream region to a downstream region. Typically, the direction of flow of a liquid is defined with respect to the direction of flow of the liquid, such as when a liquid flows against gravity due to capillary action in a material. In this case, the upstream and downstream regions are defined with respect to the direction of flow of the liquid.

[0058] Gas communication or liquid communication

[0059] Gas communication or liquid communication means that a liquid or gas can flow from one place to another, and the flow can be passive or active, and can be facilitated by a physical structure. By passive or active, it is meant that the flow can be due to the liquid or gas itself, such as due to gravity or pressure, or the flow can be due to an external force, such as capillary action. By communication, it is meant that the two objects are connected or in a state of connection, such that if a liquid is present, the liquid can flow from one object to the other. By connected, it is meant that the two objects are in a state of connection, such that if a liquid is present in or on one object, the liquid can flow into or onto the other object. By non-communication, it is meant that the two objects are not in a state of connection, such that if a liquid is present in or on one object, the liquid cannot flow into or onto the other object.

[0060] Test element

[0061] As used herein, the term "test element" refers to an element that can detect the presence or absence of an analyte of interest in a sample or specimen. The detection can be based on any number of techniques, immunological, chemical, electrical, optical, molecular, nucleic acid, physical, etc. The test element can be a lateral flow test strip that can detect a plurality of analytes. Of course, other suitable test elements can be used in the present application.

[0062] Various test elements can be combined for use in the present application. One form is a test strip. Test strips for analyzing an analyte in a sample, such as a drug or a metabolite indicative of a physical condition, can be in a variety of formats, such as immunoassay or chemical analysis formats. The test strip can employ a non-competitive or competitive assay format. The test strip generally includes a wicking material having a sample application zone, a reagent zone, and a test zone. The sample is applied to the sample application zone and flows by capillary action to the reagent zone. In the reagent zone, the sample binds to the reagent if the analyte is present. The sample then flows to the test zone. Other reagents, such as molecules that specifically bind to the analyte, are immobilized in the test zone. These reagents react with the analyte in the sample, if present, and bind the analyte in the zone, or bind to the reagent in the reagent zone. A label for indicating a test signal is present in the reagent zone or in a separate label zone.

[0063] A typical non-competitive assay format is one in which a signal is generated if the sample contains the analyte, and no signal is generated if the analyte is not present. In a competitive format, a signal is generated if the analyte is not present in the sample, and no signal is generated if the analyte is present.

[0064] The test element can be a test strip, which can be made of a wicking or non-wicking material. The test strip can include a variety of materials for the transfer of the liquid sample. One material of the test strip can be coated on another material, such as filter paper coated on a nitrocellulose membrane. One zone of the test strip can be made of one or more materials, while another zone is made of a different one or more materials. The test strip can be adhered to a support or rigid surface to improve the handling strength of the test strip.

[0065] The analyte is detected by a signal generating system, such as one or more enzymes that specifically react with the analyte, and one or more signal generating system compositions are immobilized on the test strip in the analyte detection zone using the methods described above for immobilizing specific binding substances on the test strip. The signal generating substance can be on the sample application zone, the reagent zone, or the detection zone, or on the entire test strip. The solution containing the signal substance can be applied to the surface of the test strip or one or more materials of the test strip can be immersed in a solution containing the signal substance. The test strip with the signal substance solution applied to it is allowed to dry.

[0066] The zones of the test strip can be arranged in the following order: sample application zone, reagent zone, detection zone, control zone, sample adulteration determination zone, and liquid sample absorption zone. The control zone is located after the detection zone. All of the zones can be arranged on a single test strip using only one material. Alternatively, different zones can use different materials. The zones can be arranged so that each zone is in direct contact with the liquid sample, or the zones can be arranged so that the end of one zone overlaps the beginning of another zone, depending on the direction of flow of the liquid sample. The materials used can be materials that are good absorbers of water, such as filter paper, glass fiber, or nitrocellulose membrane. Other formats for the test strip can also be used.

[0067] A commonly used reagent strip is a nitrocellulose membrane reagent strip, i.e., the detection zone includes a nitrocellulose membrane on which specific binding molecules are immobilized to show the results of the detection. Other materials can also be used, such as cellulose acetate or nylon membrane, etc. Examples of reagent strips or devices containing reagent strips are described in the following patents: US 4857453; US 5073484; US 5119831; US 5185127; US 5275785; US 5416000; US 5504013; US 5602040; US 5622871; US 5654162; US 5656503; US 5686315; US 5766961; US 5770460; US 5916815; US 5976895; US 6248598; US 6140136; US 6187269; US 6187598; US 6228660; US 6235241; US 6306642; US 6352862; US 6372515; US 6379620; and US 6403383. The test strips and similar devices containing test strips disclosed in the above patents can be used in the test element or detection device of the present application for detecting the analyte, such as detecting the analyte in a sample.

[0068] The test strip used in the present application can be a generally known lateral flow test strip. The specific structure and detection principle of the test strip are known to those skilled in the art. The test strip generally comprises a sample collection area or sample application area, a label area, a detection area and a water absorption area. The sample collection area comprises a sample receiving pad, the label area comprises a label pad, and the water absorption area can comprise a water absorption pad. The detection area comprises necessary chemicals for detecting the presence of the analyte, such as immunoreagents or enzyme chemicals. The commonly used test strip is a nitrocellulose membrane test strip, i.e. the detection area comprises a nitrocellulose membrane on which specific binding molecules are immobilized to show the detection result. It can also be an acetate cellulose membrane or a nylon membrane, etc. Of course, the detection result control area can be included downstream of the detection area. Generally, the control area and the detection area appear in the form of horizontal lines, i.e. detection lines or control lines. Such a test strip is a conventional test strip, and of course, it can also be other types of test strips that use capillary action for detection. In addition, the test strip generally contains dry chemical reagent components, such as immobilized antibodies or other reagents. When the liquid is encountered, the liquid flows along the test strip by capillary action, dissolves the dry reagent components in the liquid, and then the dry reagent components in the next area react with the dry reagent components in the area, thereby performing the necessary detection. The liquid flow is mainly by capillary action. All of them can be used in the detection device of the present application, or they can be placed in the detection chamber to contact the liquid sample, or they can be used to detect whether the analyte exists in the liquid sample or the amount of the analyte in the liquid sample.

[0069] In addition to the test strip or lateral flow test strip itself being used to contact the liquid sample to test whether the liquid sample contains the analyte, in some preferred modes, the test element can also be arranged on a carrier. For example, in the present application, reference is made to the drawings, and the test element is arranged on a carrier in the form of a test strip. The test element can also be arranged on a carrier in the form of a test strip in other modes. Figure 4, in order to cooperate with the use of the detection device, the test element 10 is arranged in the carrier 13, the test element 10 can move with the movement of the carrier 13, the test element 10 in the application can choose test strip, generally, the test strip includes sample application area 101, mark area 104 and detection area 102, the sample application area is located upstream of the mark area, the mark area 104 is located upstream of the detection area 102. When the test element 10 is installed in the carrier 13, the carrier 13 is provided with a sample hole 14 corresponding to the sample application area of the test element 10, and the carrier 13 is provided with a hollow hole 15 corresponding to the detection area of the test element 10. The hollow hole 15 exposes part of the detection area of the test element 10. Specifically, the hollow hole 15 includes a first exposure hole 16 and a second exposure hole 17, and a partition 18 is arranged between the first exposure hole 16 and the second exposure hole 17. The partition 18 is pointed away from the test element 10. In this way, the two exposure holes 16 and 17 expose the test area 105 and the test result control area 106 on the test element respectively. Generally, the test area is in the form of a line, and the test result control area is also in the form of a line.

[0070] Because it is an electronic reading, generally, the LED light emitting element emits light to irradiate the test area 105 and the control area 106, and the PD receives the light emitted from the test area 105 and the control area 106 of the test element, and converts the test result into an electrical signal. The partition arranged at the window is to avoid the incident light irradiating the test area from irradiating the control area. In this way, the light received by the PD only receives the reflected light or refracted light of the detection area, and does not receive the light of the control area, so as not to be disturbed by the light of the control area, and to make the detection result more accurate. The following will be described in detail in combination with the actual optical power equipment.

[0071] analyte

[0072] Examples of analytes that can be detected using the present application include small molecules including drugs of abuse. "Drug of abuse" (DOA) refers to the use of a drug (usually one that acts to numb the nerves) for non-medical purposes. The use of these drugs can result in physical and mental harm, dependency, addiction and / or death. Examples of drugs of abuse include cocaine; amphetamines AMP (e.g., black beauties, white cross amphetamine tablets, dexedrine, dexedrine tablets, Beans); methamphetamine MET (crank, meth, crystal, speed); barbiturates BAR (e.g., Valium, Roche Pharmaceuticals, Nutley, New Jersey); tranquilizers (i.e., sleep aids); lysergic acid diethylamide (LSD); downers (goofballs, barbs, blue devils, yellow jackets, Quaaludes); tricyclic antidepressants (TCAs, i.e., imipramine, amitriptyline, and chlordiazepoxide); dimethoxy-methylamphetamine (MDMA); phencyclidine (PCP); tetrahydrocannabinol (THC, pot, dope, hash, weed, etc.); opiates (i.e., morphine MOP or, opium, cocaine COC, heroin, oxycodone); anxiolytics and sedative-hypnotics, which are a class of drugs primarily used to reduce anxiety, tension, fear, stabilize mood, and have a sedative-hypnotic effect, including benzodiazepines BZO, atypical BZs, fused diazepines NB23C, benzodiazepines, BZ receptor ligands, open-chain BZs, diphenylmethane derivatives, piperazine carboxylates, piperidine carboxylates, quinazolinones, thiazine and thiazole derivatives, other heterocyclics, imidazole-type sedative / pain relievers (e.g., oxycodone OXY, methadone MTD), propylene glycol derivatives-carbamates, aliphatic compounds, anthracene derivatives, etc. The detection device of the present application can also be used to detect drugs that are used for medical purposes but are prone to overdose, such as tricyclic antidepressants (imipramine or the like) and acetaminophen. These drugs are metabolized into small molecules that are present in bodily fluids such as blood, urine, saliva, sweat, etc. or in some cases, the small molecules are present in the body.

[0073] For example, analytes detected using the present application include, but are not limited to, creatinine, bilirubin, nitrite, protein (non-specific), hormones (e.g., human chorionic gonadotropin, progesterone, follicle stimulating hormone, etc.), blood, white blood cells, sugar, heavy metals or toxins, bacterial agents (e.g., protein or sugar agents specific to a particular bacteria such as E. coli 0157:H7, Staphylococcus, Salmonella, Clostridium, Campylobacter, L. monocytogenes, Vibrio, or Cactus bacillus) and substances related to physiological characteristics in urine such as pH and specific gravity. Any other clinical urine chemistry analysis can be detected using the lateral flow assay format in conjunction with the present device.

[0074] Flow of liquid

[0075] Flow of liquid generally refers to the movement of liquid from one place to another. In general, the flow of liquid in nature is mostly due to the action of gravity, from high to low. Here, the flow is also due to external force, i.e. the flow under the condition of external gravity, which can be natural gravity. In addition to gravity, the flow of liquid can also overcome gravity and move from low to high. For example, the extraction of liquid, or the compression of liquid, or the flow of liquid due to pressure, or the flow of liquid due to the concern of pressure and the gravity of the liquid itself.

[0076] Carrier of test element

[0077] Since the test element 10 is basically a disposable consumable, it is small in shape, not easy to hold, and easy to bend. In order to enable the detection device to detect multiple samples, the test element 10 in the detection device needs to be replaceable, which requires the operator to take out the test element 10 in the detection device multiple times. In order to facilitate the installation and removal of the test element 10, the detection device includes a carrier 13 for carrying the test element, and the test element 10 is installed in the carrier 13, so that the test element 10 can move with the carrier 13. The carrier 13 is made of hard material, such as plastic, which facilitates the installation or removal of the carrier 13 by the operator. In this way, the carrier can be inserted into the housing 30, and the housing includes electronic components that can read the test results of the test area of the test element in the carrier. This reading is generally read by optical principles, similar to the current electronic early pregnancy reading method. These methods are specifically described in CN104730229, CN101650298, US558079, US7315378.

[0078] In some ways, the carrier has a locked position in the housing, and when the carrier is inserted into the housing 30, it is in the locked position, and when it is unlocked, the housing has a pop-out element that allows the carrier to automatically detach from the housing.

[0079] In some embodiments, the carrier 13 is provided with a sample dispensing hole 14, which enables the carrier 13 to retain samples, especially for solid, semi-solid, or liquid samples. In this embodiment, the sample dispensing hole 14 is an open frustum shape, which also increases the sample capacity of the sample dispensing hole 14 to some extent. In some embodiments, after the carrier is inserted into the housing, the sample is added through the sample dispensing hole 13 on the carrier, or the sample is added to the sample dispensing hole 13 first, and then the carrier is inserted into the housing and locked in place.

[0080] Preferably, the carrier 13 includes a first cover plate 21 and a second cover plate 22, which can be closed together to clamp the test element 10 in the middle, thus fixing the test element 10 within the carrier 13. The first cover plate 21 and the second cover plate 22 are detachably connected, which facilitates the operator to replace the test element 10 within the carrier 13. Alternatively, multiple carrier elements can be provided, each containing a test strip, so that they can be continuously inserted into the housing for domestic reading of test results. Such a housing can be configured with multiple carriers. When testing is required, the sample is collected and added to the sample application hole 13 of the carrier, then inserted into the housing, locking the carrier in the locked position. After reading the test results, the carrier is automatically ejected from the housing. This allows for multiple tests, such as for coronavirus antigen testing, enabling multiple different tests.

[0081] Furthermore, the first cover plate 21 and the second cover plate 22 are provided with a first limiting structure 19 for fixing the carrier 13. The first limiting structure 19 can be a protrusion, a groove or the like. Its main purpose is to restrict the movement of the test element 10 in the carrier 13, so that the sample application area of ​​the test element 10 is always aligned with the sample application hole 14 and the hollow hole 15 is always aligned with the test area of ​​the test element 10.

[0082] Preferably, to facilitate the operator's grip on the carrier, the first cover plate 21 and / or the second cover plate 22 are provided with a grip portion 23. In this invention, the grip portion 23 is convenient for the operator to hold with two fingers, and the grip portion 23 is provided with an anti-slip strip to increase friction. In this embodiment, refer to the attached drawing. Figure 4 Because the anti-slip strip is located on the lower side of the grip 23, it provides better grip. Figure 4 It is not shown from the perspective of the view. In some other ways, the grip and the upper cover 21 of the carrier are on the same plane and have the same thickness as the second cover plate, so there is a space 107 between the grip and the second cover plate 22. The purpose of this design is that when the carrier is placed on a flat surface, the space 107 is convenient for the operator to grip with their fingers, thereby facilitating insertion into the housing.

[0083] In some ways, on the first cover plate 21, the detection area corresponding to the test element has a hollow design, which is different from the general carrier design. Basically, through the hollow structure 16, 17, the detection area 105 and the detection control area 106 are exposed respectively. Through Figure 4 It can be seen that one of the partitions in the hollow area covers the area between the detection area 105 and the detection control area 106, which is covered by the partition 18. For example, as shown in Figure 5 The second limiting structure 45 on the hollow structure is also included, which corresponds to the light-emitting elements and the PDs that receive light signals on the PCB board 46 on the one hand, and on the other hand, it also plays a role in blocking external light from entering the hollow structure to interfere with the detection results, and at the same time, it also allows the carrier to be in a stable position when inserted into the shell, so that only when the carrier is inserted into the shell, the light-emitting elements 406 and 407 on the PCB board 46 correspond to the detection area 105 and the detection result control area 106, and the corresponding holes 404, 403 and 402 on the second limiting structure 45 surround the light-emitting element 406, the PD 408 that receives light signals, and another light-emitting element 407. In this way, the light emitted by the light-emitting element 406 shines on the detection area 105 of the test element in the carrier, and the reflected light of the test area 105 is received by the PD 408 located between the two light-emitting elements. Similarly, the light emitted by the light-emitting element 407 shines on the detection result control area 106, and the reflected light on the control area 106 is received by the PD 408 that receives light signals. In this way, the partition 18 on the carrier covers the area between the test area 105 and the control area 106 on the test element detection area 102, which is similar to a structure with an isosceles triangle cross section( Figure 4 ) covering the area between the test area 105 and the control area 106. In this way, when reading the test results, interference is reduced.

[0084] The second limiting member 45 has a limiting piece 42 and cooperates with the first limiting member 42 (as shown in Figure 5 The figure) shows that when the carrier is inserted into the shell, the carrier needs to pass through the space formed by the first limiting structure 42 and the second limiting structure 45, and the shape and size of the space are matched with the shape and size of the upper cover and the lower cover of the test area 102 on the carrier. When the carrier is inserted, the carrier is in the correct position, otherwise, the detection area 105 on the test area 102 needs to be aligned with the light-emitting element 406, and if the position is deviated, the light emitted by the light-emitting element cannot shine on the detection area, so that the test result obtained is not accurate.

[0085] The shell

[0086] The housing is the outer shell of the detection device, i.e. the part of the detection device that is directly exposed to the air. The housing 30 is provided with a slot 39 through which the carrier 13 with the test element 10 therein can be inserted into the housing 30 so that the test region 102 of the test element 10 in the carrier is aligned with the reading test electronic elements in the housing, such as light emitting elements and light receiving PD elements, for performing the detection of the analyte or reading of the test result.

[0087] The housing 30 is detachable. In the present embodiment, the housing comprises a first outer shell 31 and a second outer shell 32. When the first outer shell 31 and the second outer shell 32 are assembled, an internal space is formed in which other components of the detection device can be installed, such as a PCB 33. The PCB 33 is provided with a display screen 34. The first end 35 of the PCB 33 is provided with a first LED light emitting element 406 and a second LED light emitting element 407. The first and second electrodes can extend into the first and second exposed holes 16 and 17 to correspond to the test region of the test element 10. The light emitted by the first and second electrodes can irradiate the test region of the test element. The PCB 33 is also provided with a receiving element, such as a PD receiving element 408, for receiving the light from the test element. The amount of the test can be calculated and displayed on the display screen 34. The housing is provided with a display screen hole 24 corresponding to the position of the display screen 34. The display screen hole 24 exposes the display screen 34.

[0088] Preferably, the second end 36 of the PCB 33 (the other end away from the first end 35) is provided with a battery holder 37 for installing a battery 38, which is preferably a coin battery. Further, generally, the first end 35 of the PCB 33 provided with the first and second electrodes is close to the side of the slot 39 of the housing 30, and the second end 36 of the PCB 33 provided with the battery holder 37 is away from the side of the slot 39 of the housing 30. The battery holder 37 is preferably disposed on the side of the PCB 33 opposite to the display screen 34.

[0089] In some ways, how to judge whether the carrier is inserted into the shell, when the program of starting reading or starting up can be realized by the optical element 406. When the carrier is not inserted into the shell, the space formed by the two limiting structures is not blocked, after starting up, the light emitted by the optical element 406 irradiates to the inner surface 409 of the first limiting piece 42, the inner surface is generally a black surface, so that the reflected light is received by the PD to form a signal to the control center, if the continuous test structure does not change, it indicates that the carrier is not inserted into the shell, after a period of time, if the signal is still unchanged, it can be in standby state, saving power. Once the carrier is inserted into the correct position of the shell, the light emitted by the optical element 406 irradiates to the test element, generally the test element is white, so that the reflected light is received by the PD to form a new signal, indicating that the carrier is inserted into the shell, and the reading of the test result can be started. When the carrier is automatically ejected from the shell, the irradiation is carried out again, and the signal formed is the same as the signal without insertion, indicating that the carrier has left the shell, and the reading of the test result is completed.

[0090] Carrier and shell

[0091] The carrier 13 can enter into the shell 30 through the insertion hole 39, in order to make the carrier 13 not shake after being completely inserted into the shell 30, and the carrier 13 is in the same position each time, so that it can be ensured that the first light emitting element 406 and the second light emitting element always contact with the detection area of the test element 10 each time, avoiding being inserted skewly and unable to read the detection result. Preferably, the second limiting structure 40 is arranged in the shell 30, the second limiting structure 40 is internally provided with a through hole 43, the carrier 13 is inserted into the position of the through hole 43, the width and height of the through hole 43 are matched with the insertion part of the carrier 13, which makes the carrier 13 be limited in the second limiting structure 40 after being inserted and not easy to shake. Specifically, the second limiting structure 40 includes a first limiting piece 41 and a second limiting piece 42, the first limiting piece 41 and the second limiting piece 42 are assembled together to form the second limiting structure 40, the second limiting piece 42 is directly installed on the first shell 31 or the second shell 32, the first limiting piece 41 is installed on the second limiting piece 42, and the PCB circuit board 33 is installed on the first limiting piece 41. Further, in the present application, the second limiting structure 40 not only has the function of limiting the movement of the carrier 13, but also has the function of positioning the detection area of the test element 10 in the carrier 13, and the specific way is that the first end 35 of the PCB circuit board 33 is installed on the first limiting piece 41, the first limiting piece 41 is provided with a through hole 44 matched with the first light emitting element and the second light emitting element, so that the first limiting piece 41 does not block the light emitted by the first light emitting element and the second light emitting element.

[0092] Preferably, the first limiting piece 41 is provided with a second limiting structure 45, which is mainly a protrusion, a groove, a column, a hole or some other structure that can be used for positioning, and the first end 35 of the PCB circuit board 33 is provided with a fifth limiting structure 46 corresponding to the second limiting structure 45. The purpose is to firmly fix the first end 35 of the PCB circuit board 33 on the first limiting piece 41. For example, the second limiting structure 45 is a protrusion structure, and the fifth limiting structure 46 is a corresponding groove structure. For another example, the second limiting structure 45 is a column structure, and the fifth limiting structure 46 is a hole structure. The specific structure of the second limiting structure 45 and the fifth limiting structure 46 is not the focus of the present application. As long as they can be assembled together and cooperate with each other to achieve the purpose of not moving relative to each other, the specific details of the second limiting structure 45 and the fifth limiting structure 46 will not be described in detail, and those skilled in the art can design them by themselves.

[0093] Preferably, the first limiting piece 41 and / or the second limiting piece 42 are in the shape of U, so that the first limiting piece 41 and the second limiting piece 42 can form a through hole 43 when assembled, allowing the carrier to pass through.

[0094] Preferably, the second limiting structure 40 is limited in the shell 30 and cannot move, and the first limiting piece 41 and the second limiting piece 42 are both limited in the shell 30 and cannot move. In this embodiment, the second limiting structure 40 is in the shape of wide in the middle and narrow on both sides as a whole. Referring to the drawings, Figure 7 The shell 30 is provided with a fourth limiting structure 26, which is matched with the shape of the second limiting structure 40. The fourth limiting structure 26 is preferably integrally formed with the shell 30. The outer shape of the second limiting structure 40 and the inner structure of the fourth limiting structure 26 are designed in pairs, and the specific details of the outer shape of the second limiting structure 40 and the inner structure of the fourth limiting structure 26 are not the focus of the present application. As long as the second limiting structure 40 can be assembled into the fourth limiting structure 26 without moving, the specific details of the outer shape of the second limiting structure 40 and the inner structure of the fourth limiting structure 26 will not be described in detail, and those skilled in the art can design them by themselves.

[0095] Further, the carrier 13 needs to be limited in the insertion depth in the shell 30 during the insertion into the shell 30, because when the insertion depth of the carrier 13 is uncertain, it is impossible to determine whether the first light emitting element and the second light emitting element can correspond to the test regions on the test element 10. Therefore, preferably, the shell 30 is provided with a stop structure 49, which makes the carrier 13 abut against the stop structure 49 after being inserted to a certain depth, so as to be unable to continue to be inserted (it is to be noted that the abutment here includes direct abutment and indirect abutment, and the unable to continue to be inserted includes the carrier 13 being unable to continue to be inserted deeply and the carrier 13 being able to continue to be inserted deeply to a certain extent, but after being inserted, the carrier 13 is restored to the initial position due to the action of some force. Generally, the case of direct abutment corresponds to the carrier 13 being unable to continue to be inserted deeply; the case of indirect abutment corresponds to the carrier 13 being able to continue to be inserted deeply to a certain extent, but after being inserted, the carrier 13 is restored to the initial position due to the action of some force, and the form of indirect abutment will be described in detail later).

[0096] Preferably, the shell 30 is provided with a locking structure, which locks the position of the carrier 13 when the carrier 13 abuts against the stop structure 49, so that the carrier 13 can no longer be pulled out / inserted, thereby realizing the position locking in the shell 30. In the locked state, since the carrier 13 is unable to move, it can be ensured that the first light emitting element and the second light emitting element can always be aligned with or aligned to the test regions on the test element 10.

[0097] Preferably, in the present application, in order to reduce the number of parts in the shell 30 and facilitate the assembly of the detection device, the locking structure and the stop structure 49 are integrated, or in other words, the locking structure and the stop structure 49 are the same part, which is hereinafter collectively referred to as a locking component 50. The locking component 50 includes a lock catch 51, and the carrier 13 is provided with a slot 25. When the carrier 13 is inserted to abut against the locking component 50, the lock catch 51 can be buckled into the slot 25, thereby realizing the locking of the carrier 13. One side of the buckling position 28 of the lock catch 51 is an arc surface, and the other side is a vertical surface. The shape of the lock catch 51 is a conventional design in the field, and therefore will not be described in detail. Further, the locking component 50 includes two lock catches 51, which are oppositely arranged. Correspondingly, the carrier 13 is provided with two slots 25, and the locking of the two lock catches 51 and the two slots 25 respectively makes the locking of the carrier 13 in the shell 30 more stable. When one end of the carrier is inserted into the insertion hole of the shell, the end with the slot 25 enters the locking component. The symmetrical lock catches in the locking component are generally elastic, so that once the slot is contacted by the lock catch, there is an elastic force, which forces the carrier to be in a fixed position.

[0098] Ejection component

[0099] Since the locking structure can lock the position of the carrier 13, and the locking structure is located inside the shell 30, the operator cannot complete the unlocking of the locking structure outside the shell 30, so that the carrier 13 is always in a locked state after being locked. When the test is completed, generally through the display screen to know the test result, it is hoped that the carrier will be separated from the shell for the next test. At this time, the carrier is locked by the locking structure, and needs to be unlocked. Preferably, the locking structure is provided with an unlocking structure 53, and the unlocking structure 53 is exposed outside the shell 30, and the operator completes the position unlocking of the carrier 13 by pressing the unlocking structure 53 outside the shell 30. Specifically, since the locking structure and the blocking structure 49 are the same part, which are collectively referred to as the locking component 50, the locking component 50 (locking structure) is provided with an unlocking structure, that is, the locking structure, the blocking structure 49 and the unlocking structure are integrated. Further, the locking component 50 is provided with a fulcrum structure 52, the lock catch 51 is connected with the fulcrum structure 52, and the unlocking structure 53 and the lock catch 51 are located on the two sides, respectively, that is, the fulcrum structure 52 is located between the unlocking structure 53 and the lock catch 51. Thus, a lever structure with the fulcrum structure 52 as the center is formed, and pressing the unlocking structure 53 can lift the lock catch 51 from the slot 25, thereby completing the unlocking.

[0100] In order to ensure that the pressing of the unlocking structure 53 can lift the lock catch 51, the position of the fulcrum structure 52 needs to be fixed in the shell 30. If the fulcrum structure 52 is movable in the shell 30, when the unlocking structure 53 is pressed, the fulcrum structure 52 will be moved first instead of lifting the lock catch 51. Specifically, the shell 30 is provided with a first fixed column 26, the first fixed column 26 is used to fix the locking component 50, the fulcrum structure 52 of the locking component 50 is connected with a first connecting structure 54, the first connecting structure 54 is connected with a first hollow body 55, and the first hollow body 55 has a hole inside which is matched with the outside of the first fixed column 26, so that it can be sleeved on the first fixed column 26, so that the position of the fulcrum structure 52 is fixed. (Here, the fixing means that when the fulcrum structure 52 is not subjected to external force, the position of the fulcrum structure 52 is fixed, and when the fulcrum structure 52 is subjected to external force, the position of the fulcrum structure 52 may be shifted relative to the initial position.)

[0101] Further, the housing 30 is also provided with a second fixing column 27, which is used to better fix the locking component 50 on the basis of the first fixing column 26. The first hollow body 55 is connected with a second connecting structure 56, which is connected with a second hollow body 57. The second hollow body 57 has a hole inside which is matched with the outside of the second fixing column 27, so that it can be sleeved on the second fixing column 27. Compared with the design that the locking component 50 is fixed on the housing 30 only by the matching of the first hollow body 55 and the first fixing column 26, now this way can further limit the relative rotation of the first hollow body 55 and the first fixing column 26, so that the locking component 50 in the housing 30 is fixed more firmly. The firm fixation of the locking component 50 means that the position of the fulcrum structure 52 can be kept as fixed as possible. In this way, when the unlocking structure 53 is pressed, it will inevitably cause the lifting of the lock catch 51, and the unlocking is completed.

[0102] Regarding the first connecting structure 54 and the second connecting structure 56, both are plate-shaped structures, but there are differences between them. The first connecting structure 54 is the structure connecting the fulcrum structure 52 and the first hollow body 55. When the unlocking structure 53 is pressed to unlock, the deformation generally occurs on the first connecting structure 54 (including the connecting position of the first connecting structure 54 and the lock catch 51, and the connecting position of the first connecting structure 51 and the first hollow body 55). Therefore, the thickness of the first connecting structure 54 should not be too thick, because too thick will limit the deformation of the first connecting structure 54. Moreover, the thickness of the first connecting structure 54 should not be too thin, because too thin will make the first connecting structure 54 prone to breakage when deformed. The thickness of the first connecting structure 54 is between 0.3mm and 3mm, preferably between 0.8mm and 2mm. The second connecting structure 56 is the structure connecting the first hollow body 55 and the second hollow body 57. Its main function is to keep the locking component 50 fixed in the housing 30. Therefore, it only needs to have a certain thickness to keep the first hollow body 55 and the second hollow body 57 connected. Of course, the second connecting structure 56 can also have a larger thickness, and the thickness of the second connecting structure 56 is not limited. The increase of the thickness can help to improve the connection stability between the first hollow body 55 and the second hollow body 57.

[0103] Preferably, some operators press too hard when pressing the unlocking structure 53, which is easy to continue to deform after the lock catch 51 has completed unlocking, which is easy to cause the lock catch 51 to break, causing the locking component 50 to be damaged, and the operator to mistakenly think that the product quality is too poor. In order to avoid the lock catch 51 from being deformed too much and breaking, a protruding structure 58 is arranged on the side of the lock catch 51 opposite to the buckle position 28, when the lock catch 51 is deformed to a certain extent, the protruding structure 58 on the lock catch 51 will abut against the inner wall of the shell 30, so that the lock catch 51 cannot continue to deform, thereby achieving the purpose of preventing breakage. Also, when pressing the unlocking structure 53, the pressing unlocking structure 53 is limited, and the extension bodies 450, 451 extend on both sides of the second hollow body 57. The two extension bodies do not contact the pressing unlocking structure 53, but leave a distance. Once the pressing unlocking structure 53 is pressed, the extension body 451 can limit the pressing distance of the unlocking structure 53, and the other extension body 450 limits the distance of the unlocking structure 47. The distance of the unlocking structure 53 is limited by the double limiting effect (the design of the extension body 450 and the protruding structure 58). The purpose is that different operators apply different forces to the unlocking structure 53, 47, but the running distance of the unlocking structure 53 is fixed. At the same time, the unlocking structure 53 is generally one-time formed, and when repeatedly unlocking, if it loses elastic deformation and cannot play a locking role, the service life is shortened. For example, if the running distance of the unlocking structure 53 is different each time, it may cause the first connecting structure 54 to deform differently and lose.

[0104] The unlocking structure 53 includes an unlocking part 46 and a pressing part 47, the pressing part 47 is arranged on the unlocking part 46, and force can be transmitted to the unlocking part 46 by pressing the pressing part 47. The movement of the unlocking part 46 drives the first connecting structure 54 to deform, and the deformation of the first connecting structure 54 causes the lock catch 51 to lift and thus unlock, or causes the lock catch to open and thus release the restriction on the carrier. In use, the unlocking structure 53 will be directly pressed by the fingers, especially the unlocking part 46 in the unlocking structure 53, which will frequently deform (move) to achieve unlocking. In order to prolong the service life of the stylus, the unlocking part 46 is not easy to break and is a problem that needs to be considered. Preferably, the unlocking part 46 is arc-shaped, and the arc surface of the unlocking part 46 faces outward. The arc-shaped unlocking part 46 is less likely to break than the square unlocking part 46 because it can partially decompose the force to the arc cross section, rather than like the square unlocking part 46, which transmits all the force to the connection position of the unlocking part 46 and the fulcrum structure 52. In addition, the arc-shaped unlocking part 46 is more suitable for the shell 30.

[0105] Furthermore, the arc-shaped unlocking portion 46 includes both an arc center facing inwards towards the unlocking structure 53 and an arc center facing outwards towards the unlocking structure. Both shapes of the unlocking portion 46 can be applied to the unlocking structure 53 in this invention. Of the two, the unlocking portion 46 with its arc center facing inwards is more preferred because the arc-shaped structure of the outer contour edge of the housing 30 is also arc-shaped inwards. Therefore, selecting the unlocking structure 53 with its arc center facing inwards allows for better fit with the internal space of the housing 30. Furthermore, the cross-section of the unlocking portion 46 is divided into a first edge 61, a second edge 60, and a middle portion 62. This invention describes these three parts to reflect different unlocking portion 46 structures. (See attached diagram) Figure 10 As shown, the unlocking structure 53 with the arc center of the unlocking part 46 facing inward includes: (The rest of the text appears to be a list of components or a diagram, and doesn't need a direct translation.) Figure 10 (a) The distance from the center is closest to either the first edge 61 or the second edge 60 (the center is the position that bisects the central axis of the locking component 50, attached). Figure 8 (As already shown), the other is furthest from the center, and the distance of the middle part 62 from the center is between the distances of the first edge 61 and the second edge 60 from the center; Appendix Figure 10 (b) The middle portion 62 is furthest from the center, while the distances from the first edge 61 and the second edge 60 to the center are both less than the distance from the middle portion 62 to the center. (Compared to Appendix) Figure 10 (a) Appendix Figure 10 (b) Technical solution, attached Figure 10 (a) is a better technical solution because it uses an attached... Figure 10 In technical solution (b), the middle part 62 is a protruding part of an arc structure. When this part directly contacts the pressing part 47, the force is partially distributed to the arc-shaped cross-section on both sides of the arc structure, making the pressing of the unlocking part 46 feel relatively "hard" and difficult to complete. In the attached... Figure 10 In the technical solution (a), when pressed, the arc structure can decompose the force on only one side, making the unlocking part 46 feel "soft" and easy to unlock. Furthermore, when the detection pen is placed horizontally on the table, that is, when the top or bottom surface of the pen's shell 30 is in contact with the table, the tangent 63 at the edge of the arc formed by the first edge 61, the middle part 62, and the second edge 60 is perpendicular or nearly perpendicular to the horizontal plane. Here, perpendicular or nearly perpendicular means that the angle between the tangent 63 and the horizontal plane is in the range of 75°-90°. In this way, the unlocking structure 53 is very easy to press, and the pressing effect is obvious, which can easily unlock the device and has a long service life.

[0106] Further, the connecting position of the unlocking part 46 and the fulcrum structure 52 is provided with a reinforcing structure 59, which makes the connecting position of the unlocking part 46 and the fulcrum structure 52 not easy to break, because this connecting position is the most stressed position.

[0107] Preferably, in order to facilitate the hand of the operator to press the pressing part 47, the outer contour of the pressing part 47 is arc-shaped, which makes the operator not to touch the sharp end when pressing, greatly improving the comfort when pressing.

[0108] In order to improve the feedback sensitivity of the unlocking of the lock catch 51 when the unlocking structure 53 is pressed, the operator can complete the unlocking of the carrier 13 by pressing with appropriate force, instead of pressing with great force. Preferably, at least one face of the unlocking part 46 and the face of the lock catch 51 are in the same plane, when the two have a common plane, the unlocking part 46 and the lock catch 51 have better relevance, or in other words, the connection, when the unlocking structure 53 is pressed, it is easier to drive the lock catch 51 to unlock synchronously. Specifically, the unlocking part 46 includes a first side face 64 and a second side face 65, which are respectively located near the second edge 60 and the first edge 61, and the lock catch 51 also includes a third side face 66 and a fourth side face 67, wherein one of the first side face 64 and the second side face 65 of the unlocking part 46 and one of the third side face 66 and the fourth side face 67 of the lock catch 51 are in the same plane. Further, the first side face 64 and the second side face 65 of the unlocking part 46 and the third side face 66 and the fourth side face 67 of the lock catch 51 are in the same plane. In this embodiment, the second side face 65 of the unlocking part 46 and the third side face 66 of the lock catch 51 are in the same plane, which makes the lower plane of the unlocking structure 53 in the same plane, when the unlocking part 46 is installed in the shell 30, the unlocking part 46 can be better and more conveniently installed.

[0109] When the operator wants to take out the carrier 13, he only needs to press the unlocking structure 53, and the unlocking of the carrier 13 is completed, and the carrier 13 returns to the active state. However, the carrier 13 still stays in the detection pen due to the lack of external force, and the operator needs to manually pull it out. Preferably, in order to facilitate the operator to take out the carrier 13, the detection pen further comprises a resilient structure 68, which should be arranged between the blocking structure 49 and the carrier 13. When the blocking structure 49 and the carrier 13 abut, the resilient structure 68 located therebetween is compressed. Since the locking structure locks the position of the carrier 13, the resilient structure 68 is always in a compressed state and accumulates elastic potential energy to achieve the position locking in the shell 30. When the unlocking of the carrier 13 is needed, the operator only needs to press the unlocking structure 53. Since the resilient structure 68 accumulates elastic potential energy, the unlocking releases the elastic potential energy, which can automatically eject the carrier 13 from the shell. Those skilled in the art should select the resilient structure 68 according to the ejection needs of the carrier 13, so that the carrier 13 will not be ejected too much to cause falling, or the carrier 13 will not have enough ejection distance to be inconvenient to pull out.

[0110] Preferably, in some embodiments, the resilient structure 68 is independent, that is, the resilient structure 68 is neither connected with the carrier 13 nor connected with the locking component 50, and it is an independent component. This way can achieve the unlocking and ejection function of the carrier 13, but since the spring is independent, it is more troublesome to assemble the detection pen. In some other embodiments, the resilient structure 68 is integrated with the carrier 13, more specifically, the resilient structure 68 is integrated with the end inserted into the detection pen, for example, the resilient structure 68 is integrated with the first shell 31 and / or the second shell 32 in the carrier 13. This way reduces the number of parts of the detection pen, but has the disadvantage that the carrier 13 is connected with the resilient structure 68, and when the carrier 13 is taken out, the resilient structure 68 is also exposed, which is not aesthetic. In some other embodiments, the resilient structure 68 is integrated with the blocking structure 49, which is also the preferred way of the present embodiment. The resilient structure 68 is located inside the shell 30 and will not be exposed, and the resilient structure 68 is integrated with the blocking structure 49, which is convenient for production and installation, and is a preferred embodiment (as shown in the figure). It should be noted that the above-mentioned abutment of the blocking structure 49 and the carrier 13 includes direct abutment of the blocking structure 49 and the carrier 13, and indirect abutment of the blocking structure 49 and the carrier 13, such as the resilient structure 68 on the blocking structure 49 and the carrier 13 in the present embodiment, which is an indirect abutment way.

[0111] The elastic structure 68 is not only integrated with the blocking structure 49, but further, the elastic structure 68 is integrally formed with the locking component 50. The fact that the elastic structure 68 is integrated with the blocking structure 49 should be understood as including the following technical solutions: the elastic structure 68 is made of material A, the blocking structure 49 is made of material B, the elastic structure 68 and the blocking structure 49 are integrated and not separated in use. The fact that the elastic structure 68 is integrally formed with the locking component 50 should be understood as including the following technical solutions: the elastic structure 68 and the blocking structure 49 are made of the same material, and in the processing process, the elastic structure 68 and the blocking structure 49 are integrally formed as one part. At this time, the "elastic structure 68" and the "blocking structure 49" should be understood as two different parts on the locking component 50. This integrally formed manner, especially the integrally injection molded manner, reduces the number of parts inside the detection pen, facilitates production, facilitates assembly of the detection device, and meets the needs of rapid production, manufacturing, and assembly of the detection pen. In the period when the new coronavirus is still in the pandemic, it is necessary to improve the production efficiency and factory output of the detection pen.

[0112] In order to meet the requirements of integrally forming the elastic structure 68, having good elasticity, and long service life, preferably, the elastic structure 68 is a component with a certain thickness and a bending shape, and a gap is left between the bending parts. The locking component 50 is made of plastic as a whole.

[0113] It should be noted that the "elastic structure 68 is integrated with the blocking structure 49" in the above description should not be limited to "the elastic structure 68 is only integrated with the blocking structure 49". In the embodiments of the present application, the locking structure, the blocking structure 49, the unlocking structure, and the elastic structure are all integrated. The present application only does not repeat the description, such as "the elastic structure and the unlocking structure are integrated" and "the blocking structure 49 and the unlocking structure are integrated". Those skilled in the art should easily deduce other connection relationships. Similarly, for the description of some components, for example, component A is fixed, and component B is rigidly connected with component A. Then, those skilled in the art should easily deduce that component B is also fixed. The present application does not repeat the description.

[0114] The above is only a specific implementation of the application, but the protection scope of the application is not limited to this. Any changes or replacements without creative labor should be covered within the protection scope of the application. Therefore, the protection scope of the application should be limited by the protection scope defined in the claims.

[0115] The application illustrated and described herein can be practiced without any of the elements, limitations, or restrictions, which are specifically disclosed herein. The terms and expressions which have been employed are used as terms of description and not of limitation, and there is no intention that in the use of such terms and expressions of excluding any equivalents of the features shown and described, or portions thereof, but it is recognized that various modifications are possible within the scope of the application claimed. Thus, it should be understood that although the present application has been specifically disclosed by various embodiments and optional features, modification and variation of the concepts herein disclosed can be resorted to by those skilled in the art, and that such modifications and variations are considered to be within the scope of this application as defined by the appended claims.

[0116] The contents of the articles, patents, patent applications, and all other documents and electronically available information mentioned or cited in this specification are hereby incorporated by reference in their entirety to the same extent as if each individual publication, patent, patent application, or other document or electronically available information was specifically and individually indicated to be incorporated by reference.

Claims

1. A detection device, characterized in that, The application relates to a test kit, which comprises a shell and a carrier, the shell and the carrier are detachable, the shell is provided with a socket, the carrier is provided with a test element, the carrier can be inserted into the shell through the socket with the test element in the carrier; wherein, a blocking structure and a locking structure are arranged in the shell, the blocking structure and the locking structure are integrated to form a locking part, when the carrier is inserted into the shell and the locking structure locks the position of the carrier, the carrier is in abutment with the blocking structure; an unlocking structure, part of the unlocking structure is exposed outside the shell; the unlocking structure is arranged on the locking structure, wherein, the locking structure, the blocking structure and the unlocking structure are integrally formed.

2. The detection device of claim 1, wherein, The abutment between the carrier and the blocking structure includes direct abutment and indirect abutment.

3. The detection device of claim 2, wherein, The locking structure comprises a lock, the carrier is provided with a notch, the lock can be buckled into the notch to realize the locking of the carrier.

4. The detection device of claim 3, wherein, A fulcrum structure is arranged on the locking structure, the lock is connected with the fulcrum structure, the unlocking structure and the lock are located on the two sides of the fulcrum, and the fulcrum structure is located between the unlocking structure and the lock.

5. The detection device of claim 4, wherein, A first fixing column is arranged in the shell, the first fixing column is used for fixing the locking structure, the fulcrum structure of the locking structure is connected with a first connecting structure, the first connecting structure is connected with a first hollow body, and the first hollow body is internally provided with a hole matched with the outside of the first fixing column in the shell, so that the first hollow body can be sleeved on the first fixing column.

6. A detection device according to claim 5, characterised in that A second fixing column is arranged in the shell, the first hollow body is connected with a second connecting structure, the second connecting structure is connected with a second hollow body, and the second hollow body is internally provided with a hole matched with the outside of the second fixing column, so that the second hollow body can be sleeved on the second fixing column.

7. The detection device of claim 5, wherein, The position of the lock buckled into the notch is a buckling position, a convex structure is arranged on the side of the lock opposite to the buckling position, when the lock is excessively deformed, the convex structure on the lock can abut against the inner wall of the shell, so that the excessive deformation of the lock is prevented.

8. The detection device of claim 1, wherein, The unlocking structure comprises an unlocking part and a pressing part, the pressing part is arranged on the unlocking part, and the pressing part is exposed outside the shell and used for the operator to apply pressure.

9. The detection device of claim 8, wherein, The unlocking part is in an arc shape, and the arc-shaped unlocking part comprises an arc center facing the inside of the unlocking structure and an arc center facing the outside of the unlocking structure.

10. The detection device of claim 9, wherein, The cross section of the unlocking part is divided into a first edge, a second edge and a middle part, the arc center of the unlocking part facing the inside of the unlocking structure comprises one of the first edge or the second edge closest to the center, the other farthest from the center, and the middle part is between the first edge and the second edge. When one of the first edge or the second edge is closest to the center, the other is farthest from the center, and the middle part is between the first edge and the second edge.

11. The detection device of claim 10, wherein, When the shell is horizontally placed on a desktop, the tangent line of the edge position of the circular arc formed by the first edge, the middle part and the second edge is perpendicular or nearly perpendicular to the horizontal plane. The unlocking structure comprises an unlocking part and a pressing part, the pressing part is arranged on the unlocking part, and the connection position of the unlocking part and the fulcrum structure is provided with a reinforcing structure.

12. The detection device of claim 5, wherein, At least one surface of the unlocking part is in a common plane with a surface of the lock.

13. The detection device of claim 8, wherein, ​ The unlocking part comprises a first side and a second side, which are located close to the second edge and the first edge respectively, and the lock catch also comprises a third side and a fourth side; One of the first side and the second side of the unlocking part and one of the third side and the fourth side of the lock catch are kept in the same plane, the first side and the second side of the unlocking part and the third side and the fourth side of the lock catch are kept in the same plane, or the second side of the unlocking part and the third side of the lock catch are kept in the same plane, and the first side of the unlocking part and the fourth side of the lock catch are not kept in the same plane.

14. The detection device of claim 1, wherein, The shell further comprises an elastic structure, which is arranged between the blocking structure and the carrier, and is compressed when the carrier is inserted into the shell and is in the locked state with the locking structure.

15. The detection device of claim 14, wherein, The locking structure, the elastic structure, the blocking structure and the unlocking structure are integrally formed.

16. The detection device of claim 15, wherein, The elastic structure is a component with a certain thickness and a bending shape, and a gap is left between the bending parts.

17. The detection device of claim 14, wherein, When unlocking is needed, pressure is applied to the unlocking structure, so that the carrier is unlocked, and the elastic element automatically releases the carrier from the shell by the elastic force.

18. The detection device of claim 1, wherein, The shell comprises an electronic element for reading the test results of the test area of the test element, and the electronic element comprises a light-emitting element and a receiving element for receiving the reflected light of the test area.

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