A detection device

Abstract

The present invention discloses a detection device, including a first cavity for collecting and a second cavity for detecting, a detection element is arranged in the second cavity, an opening that can be connected with the second cavity is arranged on the first cavity, and the opening can be sealed by pressure, after sealing, the connection between the first cavity and the second cavity is cut off; after the pressure changes, the first cavity and the second cavity can be connected, and the sample can enter the second cavity from the first cavity. The detection device of the present invention can collect samples for secondary detection while collecting detection samples, which is simple and fast; the detection device of the present invention can quantitatively collect samples and perform accurate quantitative detection, and the detection results are true and reliable with high accuracy; and the detection device of the present invention is simple to use and easy to operate; the present invention can also adjust the mass of the liquid sample entering the second cavity by controlling the time, so as to perform accurate quantitative detection.

Description

Technical Field

[0001] The present invention relates to a detection device, in particular to a device capable of performing detection and collection. Background Art

[0002] At present, detection devices for detecting whether a sample contains an analyte are widely used in hospitals or homes. These detection devices for rapid diagnosis include one or more test strips, such as early pregnancy tests, drug abuse tests, etc. This rapid diagnosis detection device is very convenient and can obtain test results on the test strip in one minute, or at most ten minutes.

[0003] Drug testing is widely used and is often used in drug control departments, public security bureaus, drug rehabilitation centers, physical examination centers, national military conscription physical examination offices, etc. Drug testing is of various types and is performed frequently. There is a huge market demand for drug testing urine cups that can automatically separate the remaining samples from the tested samples. After the drug testing urine cups currently on the market are completed, the samples in the urine cups will be contaminated by the testing reagents and cannot be used for the second confirmation test, such as described in US Patent 7300633.

[0004] There are a large number of disposable detection devices that combine collection and detection in the prior art, such as the one described in Chinese Patent 2008103055231, which includes a cup body (equivalent to a collection chamber), a test board containing test paper (equivalent to a detection chamber) is provided on the side of the cup body, and the area where the cup body and the test board are located can be connected. As described in paragraph 0005 of the specification of the document, the person being tested places urine in the urine cup, and the positioning component at this time controls the liquid outlet on the test board to be disconnected from the connecting hole on the cup body. When the tester needs to conduct a test, the tester adjusts the positioning component to connect the liquid outlet with the connecting hole, and at the same time inverts the cup body, so that urine flows into the test strip cavity and the reaction is started autonomously. When the reaction is over, the results are interpreted and recorded, and the urine cup is turned over, so that the urine in the detection area and the urine in the urine cup are separated. In this way, controlling the amount of urine flowing into the test area requires the tester to operate based on his or her own experience and work habits. It is impossible to determine the amount of liquid sample that enters the test area and runs on the test strip. However, in the process of precision testing, the control of the sample amount often has a great impact on the test results.

[0005] In view of the above-mentioned technical problems, it is necessary to improve them and provide other ways to solve the shortcomings of existing traditional technologies. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a detection device which can not only collect, detect and re-collect liquid samples, but also realize accurate quantitative detection.

[0007] The technical solution adopted by the present invention to solve the above technical problems is:

[0008] A detection device comprises a first cavity for collecting and a second cavity for detecting, wherein a detection element is arranged in the second cavity, and an opening which can be connected with the second cavity is arranged on the first cavity, wherein the opening can be sealed by pressure, and after sealing, the connection between the first cavity and the second cavity is cut off; after the pressure changes, the first cavity and the second cavity can be connected, and the sample can enter the second cavity from the first cavity.

[0009] Furthermore, a sealing element is provided in the second cavity.

[0010] Further, the sealing element is movable within the second chamber, thereby changing the pressure at the opening in the second chamber.

[0011] Furthermore, an elastic element is provided in the second cavity.

[0012] Further, when the sealing element moves in the second cavity, the elastic element is compressed or rebounded.

[0013] Further, the detection element is movable in the second cavity.

[0014] Furthermore, the sealing element can move in the second cavity along with the movement of the detection element.

[0015] Furthermore, the device also includes a linkage element, and the linkage element can drive the detection element to move.

[0016] Furthermore, a channel is provided in the second cavity to allow the sample in the first cavity to enter.

[0017] Furthermore, the device also includes a fourth cavity for collecting secondary confirmation test samples, and the fourth cavity can be connected to or isolated from the first cavity.

[0018] Furthermore, the device also includes a partition element for connecting or partitioning the first cavity and the fourth cavity.

[0019] Furthermore, the device further comprises a linkage element, and the linkage element can be linked with the partition element so that the partition element connects or partitions the first cavity and the fourth cavity.

[0020] Further, when the partition element partitions the first chamber and the fourth chamber, the first chamber can be separated from the fourth chamber.

[0021] Furthermore, the linkage element comprises a cover body, and the cover body can link the detection element and / or the partition element when closed.

[0022] Furthermore, there is a certain angle between the detection element and the bottom of the detection device.

[0023] The beneficial effects of the present invention are:

[0024] (1) The detection device of the present invention can collect samples for secondary detection at the same time as collecting the detection samples, which is simple and fast; the detection device of the present invention can collect samples quantitatively and perform accurate quantitative detection, and the detection results are true and reliable with high accuracy; and the detection device of the present invention is simple to use and easy to operate.

[0025] (2) The present invention can control the mass or volume of the liquid sample entering the second cavity by controlling the duration of the interaction between the arc-shaped protrusion and the latch or the duration of the downward force applied to the latch, thereby achieving the purpose of quantitative transfer of the liquid sample and quantitative detection, which makes the detection result more real and reliable with higher accuracy; and the mass of the liquid sample entering the second cavity can be adjusted by controlling the time. During the time period of the interaction between the arc-shaped protrusion and the latch or the time period of the downward force applied to the latch, the running board can be completed at the same time to obtain the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an exploded view of the device of the present invention (wherein the second chamber is on the left).

[0027] Figure 2 It is an exploded view of the device of the present invention in another state (wherein the second chamber is on the right).

[0028] Figure 3 It is a schematic diagram of the structure of the first bottle cap.

[0029] Figure 4 It is a structural schematic diagram in which the first bottle cap and the cap body are in a separated state.

[0030] Figure 5 1 is a schematic structural diagram showing that the first connecting member and the partition element are in a separated state.

[0031] Figure 6 1 is a schematic diagram of the structure in which the first connecting member and the partition element are connected together (showing the structure of the arc-shaped protrusion).

[0032] Figure 7 This is a schematic diagram of the structure in which the cover body and the partition element are connected together (showing the structure of the arc-shaped protrusion).

[0033] Figure 8 It is a schematic diagram of the structure of the insert.

[0034] Fig. 9 It is a schematic diagram of the structure on the back of the insert.

[0035] Fig.10 yes Figure 8 Right view of .

[0036] Fig.11 It is a structural schematic diagram of the sealing element.

[0037] Fig.12 It is a schematic diagram of the structure of the cup body (in the figure, in order to show the structure of the bottom of the second cavity, the bottom support is hidden).

[0038] Fig.13 yes Fig.12 Schematic diagram of the structure after cutting open.

[0039] Fig.14 It is a structural schematic diagram of the process in which the cover body covers the cup body.

[0040] Fig.15 yes Fig.14 Longitudinal cross-sectional view of .

[0041] Fig.16 It is a structural schematic diagram in which the cover body and the cup body are in a separated state.

[0042] Fig.17 yes Fig.16 Longitudinal sectional view (cover is hidden).

[0043] Fig.18 It is a longitudinal cross-sectional view of the process in which the cover body covers the cup body.

[0044] Fig.19 It is a longitudinal cross-sectional view of the process in which the cover body covers the cup body (the arc-shaped protrusion presses the latch, and the sealing element no longer seals the second cavity).

[0045] Fig. 20 It is a longitudinal cross-sectional view of the process in which the cover body covers the cup body (the arc-shaped protrusion is rotated to another position, the arc-shaped protrusion does not press the latch, and the sealing element seals the second cavity).

[0046] Fig.21 It is a structural schematic diagram in which the first bottle cap and the cap body are separated, and the fourth cavity and the first cavity are separated after the sample test is completed.

[0047] Fig. 22 It is a structural schematic diagram of the fourth cavity in a closed state. DETAILED DESCRIPTION

[0048] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. It should be pointed out that the embodiments are only specific explanations of the present invention and should not be regarded as limitations of the present invention.

[0049] For specific embodiments, refer to the attached Figure 1-22 .

[0050] like Figure 1-2 As shown in ,18-20, a detection device includes a first cavity 1 for collection and a second cavity for detection, a detection element is arranged in the second cavity, and an opening 4 which can be connected with the second cavity is arranged on the first cavity 1, and the opening 4 can be sealed by pressure, and after sealing, the connection between the first cavity and the second cavity can be cut off; after the pressure changes, the first cavity 1 and the second cavity can be connected, and after the first cavity 1 and the second cavity are connected, the sample can enter the second cavity from the first cavity 1. In some preferred embodiments, the second cavity is arranged adjacent to the first cavity 1, and the second cavity is located on one side of the first cavity 1, so that it is convenient for the sample to enter the second cavity from the first cavity 1. In some preferred embodiments, the first cavity 1 and the second cavity have a common wall surface 9, and the opening 4 is located on the common wall surface 9, so that it is convenient for the liquid sample in the first cavity 1 to enter the second cavity.

[0051] like Figure 1-2 As shown, in this embodiment, the detection device includes a cover body 7 and a cup body, the cup body includes a first cavity 1 and a second cavity, the cover body 7 can cover the first cavity 1, and the cover body 7 and the first cavity 1 are connected by threads. In other embodiments, the cover body 7 and the first cavity 1 can also be connected by snap-fit ​​connection or other connection methods; the second cavity is adjacent to the first cavity 1, the second cavity is located on one side of the first cavity 1, and a detection element is arranged in the second cavity. The first cavity 1 and the second cavity can be connected or closed. When the first cavity 1 and the second cavity are connected, the liquid sample can enter the second cavity from the first cavity 1; as shown in FIG. Figure 17-20 As shown, the first cavity 1 is provided with an opening 4 which can be communicated with the second cavity, and the opening 4 can be sealed by pressure, such as gas pressure; when the pressures on the left and right sides of the opening 4 are equal or the gas pressure of the second cavity at the opening 4 is greater than the liquid pressure in the first cavity 1 at the opening 4, even if the first cavity 1 is full of liquid sample and the height of the liquid sample is higher than the opening 4, the liquid sample in the first cavity 1 will not enter the second cavity from this opening 4, and at this time, the first cavity 1 and the second cavity are closed and separated, and the transfer of the liquid sample will not occur; when the gas pressure of the second cavity at the opening 4 is less than the liquid pressure in the first cavity 1 at the opening 4, the first cavity 1 and the second cavity are connected, and after the first cavity 1 and the second cavity are connected, the sample can enter the second cavity from the first cavity 1 to realize the transfer of the liquid sample.

[0052] In some preferred embodiments, Figure 1-2As shown, the second cavity includes a second cavity 2 and a base 20. The base 20 can receive the liquid sample transferred from the first cavity 1 to the second cavity. In this embodiment, the base 20 and the second cavity 2 are connected by welding. In other preferred embodiments, the base 20 and the second cavity 2 can also be connected by other methods, such as bonding. After the second cavity 2 and the base 20 are fixedly connected to form a whole, there will be no leakage. In some preferred embodiments, the second cavity 2 is tilted, and the base 20 is also tilted. The inclination angle of the base 20 and the second cavity 2 is consistent. However, the bottom surface of the base 20 is a horizontal plane, and the base 20 can be placed horizontally on the horizontal plane, which makes the device more stable and is conducive to the detection. In some preferred embodiments, the angle between the second cavity 2 and the horizontal plane is greater than 0. ο Less than 90 ο .

[0053] In some preferred embodiments, Figure 1-2 As shown, an insert 21 is provided in the second cavity. Figure 8-10 As shown, the insert 21 includes an insert plate 211, a first support plate 212, a second support plate 213, a latch 23, an elastic element and a pillar 214. The first support plate 212 and the second support plate 213 are fixedly connected to the insert plate 211 respectively, the latch 23 is fixedly connected to the first support plate 212, and the pillar 214 is fixedly connected to the bottom middle position of the second support plate 212; the elastic element is fixedly connected to the second support plate, and the elastic element is sleeved on the periphery of the pillar. In some preferred embodiments, the elastic element can be a spring 72, and the spring 72 can be compressed or automatically rebound. In some preferred embodiments, such as Figure 8-10 As shown, the spring 72 is fixedly connected to the bottom of the first support plate 212, and the spring 72 is sleeved on the outer periphery of the pillar 214. The length of the spring 72 after compression is greater than the length of the pillar 214. The pillar 214 can prevent the spring 72 from twisting and deflecting during the compression process, and the pillar 214 will not affect the compression of the spring 72.

[0054] In some preferred embodiments, Figure 8-10 As shown, the latch 23 is located in the middle of the first support plate 212; in some preferred embodiments, the latch 23 includes a first cylinder and a second cylinder, the second cylinder is fixedly connected to the first support plate 212, the first cylinder and the second cylinder are fixedly connected, the first cylinder is located on the upper part of the second cylinder, and the cross-sectional diameter of the first cylinder is greater than the cross-sectional diameter of the second cylinder; in some preferred embodiments, the detection element can be placed on the plug plate 211; in some preferred embodiments, as Figure 8-10As shown, the first support sheet 212 and the second support sheet 213 are respectively perpendicular to the plug board 211, the first support sheet 212 is connected to the upper end of the plug board 211, and the second support sheet 213 is located at the lower end of the plug board 211, but not at the end position, but at a position above the end position, so that space can be reserved for placing the elastic element and the detection element can be prevented from being too far away from the base. If the detection element is too far away from the base 20, it will be inconvenient for the detection.

[0055] In some preferred embodiments, Fig.15 , 17-20, the plug plate 211 is arranged close to the inner wall surface of the outer wall of the second cavity 2, and the inclination angle of the plug plate 211 is consistent with the inclination angle of the second cavity 2. In some preferred embodiments, as Figure 1 As shown, the upper surface of the second cavity is provided with a plug hole 22, and the plug pin 23 can be inserted into the plug hole 22 and extend out of the plug hole 22 to expose the head of the plug pin 23; the plug pin 23 is inserted into the plug hole 22, and the plug sheet 21 is installed inside the second cavity. In some preferred embodiments, a sealing element is provided in the second cavity, such as Figure 1-2 , as shown in 10; the sealing element 71 can be sleeved on the second cylinder of the latch 23, and the sealing element 71 is located inside the second cavity. The sealing element 71 can seal the second cavity, so that the second cavity is isolated from the outside world and does not exchange gas or other substances with the outside world; when the latch 23 is pressed downward, the insert 21 and the sealing element 71 can move downward in the second cavity, and the spring 72 is compressed. At this time, the second cavity is connected with the outside world, and the second cavity can exchange gas with the outside world. The gas pressure in the second cavity changes. Specifically, compared with the second cavity in a closed state, the pressure in the second cavity is reduced at this time. When the gas pressure in the second cavity at the opening 4 is less than the liquid pressure in the first cavity 1 at the opening 4, the first cavity 1 and the second cavity are connected. After the first cavity 1 and the second cavity are connected, the sample can enter the second cavity from the first cavity 1. The transfer of liquid samples is achieved; when the latch 23 is no longer pressed downward, the spring 72 will automatically rebound, the second support sheet 213 will be pushed upward, the insert sheet 21 and the sealing element 71 can both move upward in the second cavity, and finally, the sealing element 71 moves to the uppermost end of the second cavity, the sealing element 71 can seal the second cavity, so that the second cavity is isolated from the outside world and does not exchange gas or other substances with the outside world; the liquid sample in the first cavity 1 will slowly stop flowing into the second cavity, and the gas pressure in the second cavity will change. Specifically, compared with before, the gas pressure in the second cavity will increase at this time, and when the gas pressure in the second cavity at the opening 4 is greater than or equal to the liquid pressure in the first cavity 1 at the opening 4, the connection between the first cavity 1 and the second cavity is cut off, and liquid samples cannot be transferred between the two.

[0056] In some preferred embodiments, Figure 8As shown, at least one detection element placement area 24 is provided on the side wall of the plug board 211 for placing detection elements; in some preferred embodiments, multiple detection element placement areas 24 can be used to place detection elements for detecting the same or different substances, so that one or more substances can be detected simultaneously; in some preferred embodiments, a partition arm 25 is provided between multiple detection element placement areas 24, and each detection element is separated and does not affect each other; in some preferred embodiments, the detection element placement area 24 is provided with a protrusion, which can fix the detection element so that the detection element is in a fixed position to ensure the smooth progress of the detection and make the detection result more accurate and reliable. The setting of the protrusion can avoid the displacement and fall of the detection element during the detection. In some preferred embodiments, the protrusion includes a first protrusion 26 and a second protrusion 27, and the first protrusion 26 and the second protrusion 27 cooperate with each other, so that the detection element is more stable. In some preferred embodiments, such as Figure 8 As shown, a guide channel 28 is also provided at the bottom of the detection element placement area 24, and the guide channel 28 can guide the liquid sample to contact the detection element, so as to avoid the liquid sample from contacting the detection element in large quantities, which affects the accuracy of the detection result. In some preferred embodiments, after the detection element is placed in the detection element placement area 24, the detection element is parallel to the outer side wall of the second cavity 2, and the detection element is inclined at the same angle as the second cavity 2, so that a certain angle is formed between the detection element and the bottom of the detection device; compared with the detection element being arranged perpendicular to the horizontal plane, the detection element is in an inclined state, so that the liquid sample can enter the detection element more quickly and quickly complete the running board detection on the detection element. In some preferred embodiments, the detection element can move in the second cavity as the plug board 211 moves. In some preferred embodiments, the sealing element 71 can move in the second cavity as the detection element moves.

[0057] In some preferred embodiments, the device further comprises a linkage element, and the linkage element can drive the detection element to move. In some preferred embodiments, the movement of the detection element is achieved under the action of an external force. In some preferred embodiments, the linkage element can be linked with other components of the detection device, for example, the linkage element can be linked with the insert 21, and the insert 21 moves under the action of the linkage element, thereby driving the detection element to move. In some preferred embodiments, the linkage element can be other components on the detection device, such as the cover 7; Figure 5-7As shown, in this embodiment, the linkage element is the cover body 7, and a section of arc-shaped protrusion 73 is provided on the circumferential surface of the cover body 7, and the arc-shaped protrusion 73 protrudes from the cover body 7. When the cover body 7 is rotated to cover the first cavity 1, the arc-shaped protrusion 73 first approaches the first cavity 1; specifically, the cover body 7 is rotated to move the cover body 7 downward, so that the arc-shaped protrusion 73 contacts the latch 23, and the cover body 7 is continuously rotated, and the arc-shaped protrusion 73 will press the latch 23, giving the latch 23 a downward force. The latch 23 is subjected to pressure, and the entire plug 21 will move downward, and the sealing element 71 , the detection element moves downward, the spring 72 is compressed, and the sealing element 71 no longer seals the second cavity. At this time, the second cavity is connected to the outside world, and the second cavity can exchange gas with the outside world. The pressure in the second cavity changes. Compared with the second cavity in the closed state, the pressure in the second cavity is reduced at this time. When the gas pressure in the second cavity at the opening 4 is less than the liquid pressure in the first cavity 1 at the opening 4, the first cavity 1 and the second cavity are connected. After the first cavity 1 and the second cavity are connected, the sample can enter the second cavity from the first cavity 1 to realize the transfer of the liquid sample. Continue to rotate the cover body 7, and the arc-shaped protrusion 73 is turned to another position, such as Fig. 20 As shown, at this position, the arc-shaped protrusion 73 no longer contacts the latch 23, and the latch 23 is no longer subjected to a downward force. At this time, the spring 72 will automatically rebound, and the second support sheet 213 will be subjected to an upward thrust. The insert sheet 21 and the sealing element 71 can both move upward in the second cavity. Finally, the latch 23 moves to the initial position and no longer moves, and the latch 23 does not contact the cover body 7 or the latch 23 contacts the cover body 7, but there is no interaction force between the two. At this time, the sealing element 71 moves to the uppermost end of the second cavity, and the sealing element 71 can seal the second cavity, so that the second cavity is isolated from the outside and does not exchange gas or other substances with the outside; the liquid sample in the first cavity 1 will slowly stop flowing into the second cavity, and the gas pressure in the second cavity will change. Specifically, compared with the second cavity being connected to the outside, the gas pressure in the second cavity will increase at this time. When the gas pressure in the second cavity at the opening 4 is greater than or equal to the liquid pressure in the first cavity 1 at the opening 4, the connection between the first cavity 1 and the second cavity is cut off, and the liquid sample cannot be transferred between the two.

[0058] In summary, it can be seen that during the time period when the arc-shaped protrusion 73 interacts with the latch 23 or the time period when the latch 23 is subjected to a downward force, the first cavity 1 and the second cavity are connected, and the liquid sample in the first cavity 1 can enter the second cavity. Therefore, the length of time when the arc-shaped protrusion 73 interacts with the latch 23 or the length of time when the latch 23 is subjected to a downward force determines the mass of the liquid sample in the first cavity 1 entering the second cavity. Therefore, the mass or volume of the liquid sample entering the second cavity can be controlled by controlling the length of time when the arc-shaped protrusion 73 interacts with the latch 23 or the length of time when the latch 23 is subjected to a downward force, so as to achieve the purpose of quantitative transfer of liquid samples and quantitative detection, so that the detection results are more real and reliable, and the accuracy is higher; and the mass of the liquid sample entering the second cavity can be adjusted by controlling the time. During the time period when the arc-shaped protrusion 73 interacts with the latch 23 or the time period when the latch 23 is subjected to a downward force, the running board can be completed at the same time to obtain the detection result.

[0059] In some preferred embodiments, Fig.13 , 15, 17-20, the first cavity 1 and the second cavity have a common wall 9. In some preferred embodiments, the first support sheet 212 can slide on the common wall 9, and a clearance gap 8 can be set on the wall 9, such as Fig.13 , 15 As shown, when the second support sheet 213 is located at the clearance gap 8, the liquid sample stored on the second support sheet 213 will flow into the bottom of the second cavity. In some preferred embodiments, the common wall surface 9 has a certain degree of inclination, and the angle between the arm surface 9 and the horizontal plane is greater than 0. ο Less than 90 ο In some preferred embodiments, the inclination angle of the common wall surface 9 is consistent with the inclination angle of the second cavity 2. In some preferred embodiments, the mouth of the second supporting sheet 213 faces downward to facilitate the outflow of the liquid sample.

[0060] Furthermore, the detection device also includes a fourth chamber 10 for collecting secondary confirmation test samples, such as Figure 1-2 As shown in 14-22, the fourth cavity 10 can be connected to or separated from the first cavity 1. In some preferred embodiments, the fourth cavity 10 and the first cavity 1 are detachably combined. The fourth cavity 10 and the first cavity 1 can be connected by snap connection or thread connection. In other preferred embodiments, the fourth cavity 10 and the first cavity 1 can also be connected by other methods. In some preferred embodiments, as Figure 12-13 As shown, the first cavity 1 has a first connecting channel 31, and the first cavity 1 is connected to the fourth cavity 10 through the first connecting channel 31. The first connecting channel 31 protrudes from the bottom surface of the first cavity 1, and the first connecting channel 31 is a cylindrical channel; Fig.21As shown, the fourth cavity 10 has a second connecting channel 32 protruding upward, and the second connecting channel 32 is also a cylindrical channel. The diameter of the second connecting channel 32 is greater than the diameter of the first connecting channel 31. Then, the second connecting channel 32 can be sleeved on the outside of the first connecting channel 31, so that the liquid sample in the first connecting channel 31 can completely enter the second connecting channel 32 and then flow into the fourth cavity, and the liquid sample will not leak out and flow to other places except the second connecting channel 32; Fig.17 As shown, the first connecting channel 31 is connected to the second connecting channel 32, and at this time, the fourth chamber 10 and the first chamber 1 are in a connected state; if a plug or other partition is inserted into the first connecting channel 31, then the fourth chamber 10 and the first chamber 1 are separated.

[0061] Furthermore, if Figure 1-2 As shown, the detection device also includes a partition element 80 for connecting or partitioning the first cavity 1 and the fourth cavity 10. In some preferred embodiments, as shown in FIG. Figure 5 As shown, the partition element 80 includes a second connecting member 61 and a head, and the second connecting member 61 and the head are integrally formed. In some preferred embodiments, such as Figure 5 As shown, the second connecting member 61 of the partition element 80 can be connected and fixed with the first connecting member 33. In some preferred embodiments, the first connecting member 33 is fixedly connected with the cover body 7 and can be integrally formed. In some preferred embodiments, the first connecting member 33 is cylindrical, and one end of the first connecting member 33 away from the cover body 7 is provided with a cylindrical opening. In some preferred embodiments, the second connecting member 61 is also cylindrical, and the second connecting member 61 is connected with the first connecting member 33, and can be connected by a snap connection, a threaded connection or other connection methods, such as Figure 8 As shown, in this embodiment, the second connecting member 61 can be inserted into the cylindrical opening of the first connecting member 33 to achieve connection.

[0062] In some preferred embodiments, Figure 5 As shown, the head of the partition element 80 has a tip 35, and the head of the partition element 80 can enter the first connecting channel 31, thereby isolating the first cavity 1 and the fourth cavity 10. When the partition element 80 is pulled out of the first connecting channel 31, the first cavity 1 and the fourth cavity 10 can be connected. In some preferred embodiments, as Figure 5-7As shown, the head of the partition element 80 is provided with a first protrusion 36 and a second protrusion 361. In some preferred embodiments, the first protrusion 36 and the second protrusion 361 are arranged in parallel, and the first protrusion 36 and the second protrusion 361 are both arranged on the outer periphery of the head of the partition element 80. In some preferred embodiments, a sealing ring is arranged between the first protrusion 36 and the second protrusion 361, and the first protrusion 36 can prevent the sealing ring from moving up, and the second protrusion 361 can prevent the sealing ring from moving down; in some preferred embodiments, there can be one or more sealing rings, and the sealing ring can play a sealing role, which can completely isolate the first cavity 1 and the fourth cavity 10 and prevent the liquid sample from flowing out of the connecting gap.

[0063] In some preferred embodiments, Figure 5-7 , 18-20, the head of the partition element 80 is provided with two second openings 37, the two second openings 37 are arranged opposite to each other, and the two second openings 37 can be connected. In some preferred embodiments, the second openings 37 are located below the sealing ring 36 and above the tip 35; in some preferred embodiments, as Figure 5 As shown, the head of the partition element 80 has a cavity, and the two second openings 37 can be connected to the cavity. The liquid sample can enter the cavity from the second openings 37. This cavity can temporarily store a certain volume of liquid sample. In this way, if the fourth cavity 10 is already full of liquid samples, and the partition element 80 is linked by the linkage element, the partition element 80 continues to move downward and continuously enters the fourth cavity 10, the partition element 80 will encounter resistance. At this time, the liquid sample in the fourth cavity 10 can enter the cavity through the second openings 37, so that the resistance encountered by the partition element 80 is reduced, and it does not affect the partition element 80 from continuing to enter the fourth cavity 10. When the partition element 80 completely enters the fourth cavity 10, the sealing ring 36 can completely isolate the connection between the first cavity 1 and the fourth cavity 10. At this time, the fourth cavity 10 can be separated from the first cavity 1.

[0064] Furthermore, the linkage element can be linked with the partition element 80 so that the partition element 80 connects or partitions the first cavity 1 and the fourth cavity 10; Figure 4-6 As shown, in this embodiment, the linkage element is the cover body 7, the first connecting member 33 is fixedly connected to the cover body 7, and the partition element 80 is fixedly connected to the first connecting member 33. Therefore, when the cover body 7 moves, the partition element 80 will move accordingly. When the cover body 7 is continuously rotated and tightened, the partition element 80 will continue to move downward until it enters the first connecting channel 31. Fig. 20As shown, at this time, the first cavity 1 and the fourth cavity 10 are in a cut-off state. When the cover 7 is continuously rotated and loosened, the cut-off element 80 will continuously move upward, and the cut-off element 80 can be separated from the first connecting channel 31, so that the first cavity 1 and the fourth cavity 10 are in a connected state. In some preferred embodiments, the cut-off element 80 can be linked by a linkage element to connect or cut off the first cavity 1 and the fourth cavity 10. In some preferred embodiments, the linkage element can simultaneously link the partition element 80 and the detection element; in this embodiment, the linkage element is the cover body 7, and the partition element 80 will move with the movement of the cover body 7; the detection element is located on the plug 21, and the pin 23 of the plug 21 is inserted into the hole 22 and extends out of the hole 22, and the cover body 7 is located above the hole 22. When the cover body 7 is continuously rotated and tightened, the partition element 80 will continue to move downward, and the arc-shaped protrusion 73 will continue to move downward. At first, the arc-shaped protrusion 73 contacts the pin 23. Continue to rotate the cover body 7, and the arc-shaped protrusion 73 will press the pin 23, giving the pin 23 a downward force. The pin 23 is subjected to pressure, the entire plug 21 will move downward, the sealing element 71 and the detection element move downward, and the spring 72 is compressed, so the linkage element can simultaneously link the partition element 80 and the detection element.

[0065] Further, when the partition element 80 partitions the first cavity 1 and the fourth cavity 10, the first cavity 1 can be separated from the fourth cavity 10. In some preferred embodiments, the fourth cavity 10 can be separated from the first cavity 1, such as Fig. 20 As shown, the partition element 80 separates the first cavity 1 and the fourth cavity 10. At this time, the fourth cavity can be pulled out downward to separate the fourth cavity 10 from the first cavity 1. In some preferred embodiments, a closing element of the fourth cavity 10 can also be provided. After the fourth cavity 10 is separated from the first cavity 1, the fourth cavity 10 can be closed to become a sealed independent cavity, so as to store the liquid sample for secondary detection, such as Figure 21-22 As shown, the closing element is a first bottle cap 12, which can cover the fourth cavity 10. An internal thread is provided inside the first bottle cap 12, and an external thread is provided on the outer wall of the second connecting channel 32 of the fourth cavity 10. The internal thread and the external thread cooperate with each other to achieve the connection and covering of the first bottle cap 12 and the fourth cavity 10, so that the liquid sample stored in the fourth cavity 10 can be protected and the liquid sample stored in the fourth cavity 10 will not leak out or be damaged.

[0066] In some preferred embodiments, Figure 4 As shown, the first bottle cap 12 can be fixed on the cover body 7, the upper surface of the cover body 7 is provided with a pit 38, the middle of the pit 38 is provided with a convex column 39, the inside of the convex column 39 is hollow, and the upper end of the convex column 39 has a first opening 43. In some preferred embodiments, as Figure 3As shown, the first bottle cap 12 is provided with a first column 40 that matches the first opening 43. The first column 40 can be inserted into the first opening 43 to achieve the combination of the first bottle cap 12 and the cover body 7. In some preferred embodiments, as Figure 3 As shown, a circular side wall 42 is further provided inside the first bottle cap 12, and the circular side wall 42 surrounds the outer circumference of the first column 40. Figure 4 As shown, the outer side wall of the boss 39 is provided with a raised rib 41, and the circular side wall 42 can cooperate with the raised rib 41 to tighten the combination of the first bottle cap 12 and the cover body 7; in some preferred embodiments, there can be multiple raised ribs 41, and in some preferred embodiments, multiple raised ribs 41 are evenly arranged on the outer side wall of the boss 39. The setting of the raised ribs 41 can be used to fix the first bottle cap 12. When necessary, the first bottle cap 12 can be pulled out to separate it from the cover body 7, and the first bottle cap 12 can be covered on the second connecting channel 32 of the fourth cavity 10 to achieve the closure of the fourth cavity 10.

[0067] Further, the linkage element includes a cover body 7. In some preferred embodiments, an arrow is provided on the cover body. By rotating in the direction indicated by the arrow, the cover body 7 can be tightened so that the cover body 7 continuously covers the first cavity. In some preferred embodiments, the cover body 7 can be linked to the detection element and / or the partition element 80 when covering. In the process of the cover body 7 covering the first cavity 1, that is, the process of continuously rotating and tightening the cover body 7, the cover body 7 continuously moves downward, and the partition element 80 moves with the movement of the cover body 7. The detection element is located on the plug 21, and the pin 23 of the plug 21 is inserted into the socket 22 and extends out of the socket 22. The cover 7 is located above the plug hole 22. When the cover 7 is continuously rotated and tightened, the partition element 80 will continuously move downward, and the arc-shaped protrusion 73 will continuously move downward. At first, the arc-shaped protrusion 73 contacts the latch 23, but there is no interaction force between the two. When the cover 7 is continuously rotated and tightened, the arc-shaped protrusion 73 will press the latch 23, giving the latch 23 a downward force. The latch 23 is under pressure, and the entire plug 21 will move downward, the sealing element 71 and the detection element will move downward, and the spring 72 will be compressed, so that the cover 7 can be linked to the detection element and / or the partition element 80 when it is closed. In some preferred embodiments, when the cover 7 is closed, it will move downward and close to the first cavity. While the cover 7 moves downward, it can press down the plug 21, and the plug 21 will move in the second cavity, thereby moving the detection element in the second cavity.

[0068] In some preferred embodiments, the cup body further includes a supporting side wall 51, such as Figure 1-2As shown, the supporting side wall 51 is an arc-shaped side wall, and the supporting side wall 51 is fixedly connected to the side wall of the first cavity 1. In some preferred embodiments, the supporting side wall 51 does not completely surround the fourth cavity 10, but leaves a gap, which is convenient for the user to install or disassemble the fourth cavity 10; in some preferred embodiments, the bottom of the supporting side wall 51 is horizontal, so that the supporting side wall 51 can be placed horizontally on a horizontal plane, so that the entire device can be placed stably, which is convenient for transportation or detection. In some preferred embodiments, the supporting side wall 51 is set at a position opposite to the second cavity, which can better balance the entire device and make the device more stable.

[0069] The present invention also provides a method for using the detection device. Figure 1-22 The description includes the following steps:

[0070] First, (1) open the cover 7 and add a liquid sample into the first chamber 1. Figure 16-17 As shown, the first cavity 1 is connected with the fourth cavity, and the liquid sample will flow into the fourth cavity 10 from the first connecting channel 31 of the first cavity 1. The liquid sample in the fourth cavity 10 is continuously increased. When the liquid sample in the fourth cavity 10 is full, the liquid sample will be stored in the first cavity 1. The height of the liquid sample will be higher than the height of the position where the opening is located. At this time, the plug 23 is inserted into the plug hole 22, exposing the head of the plug 23, and the sealing element 71 is sleeved on the plug 23. The sealing element 71 is located inside the second cavity, and the sealing element 71 seals the second cavity so that the second cavity is isolated from the outside. The liquid sample in the first cavity 1 will not enter the second cavity through the opening 4, because the gas pressure of the second cavity at the opening 4 is greater than or equal to the liquid pressure in the first cavity 1 at the opening 4. The first cavity 1 and the second cavity are closed, and the liquid sample cannot be transferred between the two.

[0071] (2) Rotate the cover 7 and move the cover 7 downward to cover the first cavity. Figure 18-19 As shown, initially, the arc-shaped projection 73 contacts the latch 23; the cover body 7 is rotated continuously, as shown in FIG. Fig.19 As shown, the arc-shaped protrusion 73 will press the latch 23, giving the latch 23 a downward force. The latch 23 is under pressure, and the entire plug 21 will move downward, the sealing element 71 and the detection element move downward, the spring 72 is compressed, and the sealing element 71 no longer seals the second cavity. At this time, the second cavity is connected to the outside, and the pressure in the second cavity changes. Specifically, compared with the second cavity being in a closed state, the pressure in the second cavity is reduced at this time. When the gas pressure in the second cavity at the opening 4 is less than the liquid pressure in the first cavity 1 at the opening 4, the first cavity 1 and the second cavity are connected. After the first cavity 1 and the second cavity are connected, the sample can enter the second cavity from the first cavity 1, and at the same time, the liquid sample can be detected;

[0072] Continue to rotate the cover 7, the arc-shaped projection 73 is moved to another position, such as Fig. 20 As shown, at this position, the arc-shaped protrusion 73 no longer contacts the latch 23, and the latch 23 is no longer subjected to the downward force. At this time, the spring 72 will automatically rebound, and the second support sheet 213 will be pushed upward. The plug sheet 21 and the sealing element 71 can move upward in the second cavity. Finally, the latch 23 moves to the initial position and no longer moves. At this time, the latch 23 is not in contact with the cover body 7 or the latch 23 is in contact with the cover body 7, but there is no interaction force between the two. The sealing element 71 moves to the uppermost end of the second cavity, and the sealing element 71 can seal the second cavity, so that the second cavity is isolated from the outside and does not communicate with the outside gas or The liquid sample in the first cavity 1 will slowly stop flowing into the second cavity, and the gas pressure in the second cavity will change. Specifically, compared with the second cavity being connected to the outside, the gas pressure in the second cavity will increase. When the gas pressure in the second cavity at the opening 4 is greater than or equal to the liquid pressure in the first cavity 1 at the opening 4, the first cavity 1 and the second cavity are closed, and the liquid sample cannot be transferred between the two. In the process of rotating the cover body 7 and closing the cover body 7 downward to cover the cup body, the partition element 80 continuously enters the fourth cavity to separate the first cavity 1 from the fourth cavity 10, and then the first cavity 1 and the fourth cavity 10 can be completely separated.

[0073] (3) After the test is completed, the reading can be obtained by observing the outer side of the second cavity. Since the cup body is set to be transparent, it is also convenient to take photos and record the test results; Figure 20-22 As shown, since the first chamber 1 and the fourth chamber 10 are completely separated by the partition element 80, the first bottle cap 12 and the fourth chamber 10 can be removed at this time, and the first bottle cap 12 can be screwed tightly onto the fourth chamber 10, and the liquid in the fourth chamber 10 can be used for secondary confirmation detection.

Claims

1. A detection device, characterized in that: The invention comprises a first cavity for collecting and a second cavity for detecting, wherein a detecting element is arranged in the second cavity, an opening which can be communicated with the second cavity is arranged on the first cavity, and the opening can be sealed by pressure, and after sealing, the communication between the first cavity and the second cavity is cut off; after the pressure is changed, the first cavity and the second cavity can be communicated, and the sample can enter the second cavity from the first cavity, a sealing element is arranged in the second cavity, and the sealing element can move in the second cavity, and an elastic element is arranged in the second cavity, and when the sealing element moves in the second cavity, the elastic element is compressed or rebounded; An insert is provided in the second cavity, and the insert includes an insert plate, a first support plate, a second support plate, a latch, an elastic element and a pillar. The first support plate and the second support plate are fixedly connected to the insert plate respectively, the latch is fixedly connected to the first support plate, and the pillar is fixedly connected to the bottom middle position of the second support plate; the elastic element is fixedly connected to the second support plate, the elastic element is sleeved on the periphery of the pillar, the elastic element is a spring, which can be compressed or automatically rebound, the spring is fixedly connected to the bottom of the first support plate, the spring is sleeved on the periphery of the pillar, and the length of the spring after compression is greater than the length of the pillar.

2. A detection device according to claim 1, characterized in that: The detection element is movable within the second cavity.

3. A detection device according to claim 1, characterized in that: The sealing element can move in the second cavity along with the movement of the detection element.

4. A detection device according to claim 1, characterized in that: It also includes a linkage element, which can drive the detection element to move.

5. A detection device according to claim 1, characterized in that: It also includes a fourth cavity for collecting secondary confirmation test samples, and the fourth cavity can be connected to or isolated from the first cavity.

6. A detection device according to claim 5, characterized in that: Also included is a partition element for connecting or partitioning the first cavity and the fourth cavity.

7. A detection device according to claim 6, characterized in that: It also includes a linkage element, which can be linked with the partition element so that the partition element connects or partitions the first cavity and the fourth cavity.

8. A detection device according to claim 7, characterized in that: When the partition element partitions the first chamber and the fourth chamber, the first chamber can be separated from the fourth chamber.

9. A detection device according to claim 7 or 8, characterized in that: The linkage element comprises a cover body, and the cover body can be linked to the detection element and / or the partition element when closed.

10. A detection device according to claim 1, characterized in that: There is a certain angle between the detection element and the bottom of the detection device.

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