Sample collection and detection integrated device

Abstract

The utility model discloses a sample collection and detection integrated device. The device comprises a cup cover, a cup body, a piston assembly, a detection cover and a detection plate. The cup body comprises a collecting part, a transferring part and a detecting part which are integrally formed. The collecting part and the detecting part are of hollow structures with closed bottoms and open tops. And the transferring part is positioned between the collecting part and the detecting part. The cup body is a one-time injection molding part. A liquid inlet and a liquid outlet are formed in the transfer part. A transition cavity is formed between the piston assembly and the side wall of the transfer cavity. In the initial state, the transition cavity communicates with the liquid inlet. After the piston assembly slides towards the interior of the transfer cavity, the transition cavity communicates with the liquid outlet. According to the utility model, a base does not need to be mounted at the bottom of the cup body while one-time injection molding of the cup body is realized; therefore, the problem of sealing connection between the cup body and the base does not need to be considered, the production process is simplified, and the cost of the sample collection and detection integrated device is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sample detection, and particularly relates to an integrated device for sample collection and detection. Background Art

[0002] The problem of drug or drug abuse has become an increasingly serious social problem. As a common integrated device for sample collection and detection, a urine cup can be used to detect urine, and then determine the types of drugs or drugs used by the tested person. Currently, commonly used detection devices include: 1. One-step urine cup, that is, the urine cup starts to detect immediately after adding a urine sample; 2. Two-step urine cup, that is, the urine cup adds a urine sample and does not start to detect immediately. It needs to be activated by a specific tool to start detecting.

[0003] The interior of the two-step urine cup usually has two cavities, a sample storage cavity and a detection cavity. The activation process is to transfer the sample in the sample storage cavity to the detection cavity to start detection; the advantage of the two-step method is that the sample storage cavity and the detection cavity are separated, and the excess sample in the sample detection cavity has not contacted the detection reagent strip, etc., so the sample can be retained and rechecked.

[0004] A two-step urine cup with a relatively simple structure, with the publication number of "CN210005511U"; it realizes the separation of the inner cavity of the cup body through a partition board and a transition unit; however, since it needs to set a partition board in the cup body, in order to realize the injection molding of the cup body, only the top and bottom of the cup body can be set as open structures, otherwise the partition board cannot be injection molded; therefore, an independent base must be installed at the bottom of the cup body; the base and the bottom opening of the cup body are assembled and connected by ultrasonic welding. However, it is difficult to achieve complete sealing between the cup body and the base, resulting in the detection remaining sample in the detection cavity being easily leaked to the outside through the gap; moreover, the separate base consumes more plastic materials, increasing the production cost of the urine cup.

[0005] In addition, there are some other two-step urine cups in the prior art (such as patents CN102087295A, CN205580842U, etc.), but they also have defects such as complex structures and the need to equip an independent base for the cup body. Summary of the Invention

[0006] The purpose of the utility model is to provide an integrated device for sample collection and detection.

[0007] The utility model provides an integrated device for sample collection and detection, comprising a cup cover, a cup body, a piston assembly, a detection cover and a detection plate. The cup body comprises an integrally formed collection part, a transfer part and a detection part. The collection part and the detection part are both hollow structures with a closed bottom and an open top. The transfer part is located at the bottom of the collection part, or between the bottoms of the collection part and the detection part. The transfer part is cylindrical, and the outer end is connected to the external environment.

[0008] The transfer part is cylindrical. The interior of the collection part forms a storage cavity; the interior of the transfer part forms a transfer cavity; the interior of the detection part forms a detection cavity; and a reagent strip is arranged in the detection plate and installed in the detection cavity.

[0009] The transfer part is provided with a liquid inlet and a liquid outlet. The bottom of the storage cavity is connected with the transfer cavity through the liquid inlet. The bottom of the detection cavity is connected with the transfer cavity through the liquid outlet.

[0010] The cup cover is connected to the top opening of the collection part. The detection cover is connected to the top opening of the detection part. The piston assembly is slidably connected in the transfer chamber. A transition chamber that can move with the piston assembly is formed between the piston assembly and the side wall of the transfer chamber. In the initial state, the transition chamber is connected to the liquid inlet. After the piston assembly slides into the interior of the transfer chamber, the transition chamber is connected to the liquid outlet.

[0011] Preferably, the piston assembly includes a sealing ring and a transition ring. The transition ring includes an inner piston column, a connecting rod and an outer piston column that are integrally formed. The two ends of the connecting rod are respectively connected to the opposite end faces of the inner piston column and the outer piston column that are spaced apart. A sealing groove is provided on the inner piston column and the outer piston column. A sealing ring is installed on the sealing groove. The outer edge of the sealing ring abuts against the inner wall of the transfer chamber. The opposite side surfaces of the inner piston column and the outer piston column and the inner wall of the transfer chamber are surrounded to form a transition chamber.

[0012] Preferably, the detection cover and / or the detection part is provided with an exhaust structure. In the initial state, the distance from the side of the inner piston column facing the outer piston column to the liquid outlet is greater than the distance from the side of the outer piston column facing the inner piston column to the liquid inlet.

[0013] Preferably, an exhaust groove is provided at the bottom edge of the detection cover; the top of the detection cavity is connected to the external environment through the exhaust groove.

[0014] Preferably, in the initial state, the side of the outer piston column facing away from the inner piston column is flush with the edge of the outer end opening of the transfer chamber.

[0015] Preferably, the detection chamber is not communicated with the external environment; in the initial state, the distance from the side of the inner piston column facing the outer piston column to the liquid outlet is less than the distance from the side of the outer piston column facing the inner piston column to the liquid inlet.

[0016] Preferably, the axis of the transfer chamber is horizontally arranged, with the outer end open and the inner end closed.

[0017] Preferably, the integrated sample collection and detection device further includes a push rod. An installation groove is provided on the top surface of the cup cover. The push rod is detachably inserted and installed in the installation groove and can be inserted into the transfer chamber.

[0018] Preferably, the cup body is a one-time injection molding part. The collection part, the detection part, and the transfer part are in a shell structure.

[0019] Preferably, the transfer part is located between the bottom of the collection part and the bottom of the detection part. The axis of the transfer part is perpendicular to the arrangement direction of the collection part and the detection part. The liquid outlet is opened on the inner side wall of the detection chamber.

[0020] Preferably, half of the transfer part is in the concave structure at the bottom of the side wall of the collection part; the other half of the transfer part is in the concave structure at the bottom of the side wall of the detection part.

[0021] Preferably, the transfer part is located at the bottom of the collection part. The axis of the transfer part is parallel to the arrangement direction of the collection part and the detection part. The liquid outlet is the inner end of the detection chamber.

[0022] Preferably, the cup cover is threadedly connected to the top opening of the collection part.

[0023] The beneficial effects of the present utility model are:

[0024] In the present utility model, a collection part and a detection part with open tops and closed bottoms are arranged side by side on the cup body, and the transfer part is arranged between the bottom of the collection part and the bottom of the detection part; based on this, while realizing the one-time injection molding of the cup body, the present utility model does not need to install a base at the bottom of the cup body; therefore, there is no need to consider the problem of the sealed connection between the cup body and the base, which simplifies the production process and reduces the cost of the integrated sample collection and detection device. Description of the Drawings

[0025] Figure 1 It is an exploded schematic diagram of Embodiment 1 of the present utility model.

[0026] Figure 2 It is a three-dimensional structure schematic diagram of Embodiment 1 of the present utility model.

[0027] Figure 3Schematic diagram of the internal structure of Embodiment 1 of the present utility model.

[0028] Figure 4 Schematic sectional view of Embodiment 1 of the present utility model.

[0029] Figure 5 Schematic diagram of the structure of the cup body in Embodiment 1 of the present utility model.

[0030] Figure 6 Schematic diagram of the structure of the piston assembly in Embodiment 1 of the present utility model.

[0031] Figure 7 Schematic diagram of the structure of the piston assembly in Embodiment 2 of the present utility model.

[0032] Figure 8 Schematic sectional view of Embodiment 3 of the present utility model. Detailed implementation manners

[0033] The present utility model will be further described below with reference to the accompanying drawings.

[0034] Embodiment 1

[0035] As Figure 1 and 2 shown, an integrated sample collection and detection device includes a cup lid 100, a push rod 200, a cup body 300, a piston assembly 400, a detection lid 500, and a detection plate 600. The cup body 300 is obtained by one - time injection molding and includes an integrally formed collection part 310, a transfer part 320, and a detection part 330. The collection part 310, the detection part 330, and the transfer part 320 are of a thin - walled shell structure.

[0036] As Figure 2 , 3 and 4 shown, the collection part 310 is in the shape of a cylinder with a closed bottom and an open top; the detection part 330 is connected to one side of the collection part 310 and is in the shape of a hollow cuboid with a closed bottom and an open top. The transfer part 320 is located between the bottom of the collection part 310 and the bottom of the detection part 330. The transfer part 320 is in the shape of a cylinder with a horizontal axis. Half of the transfer part 320 is in the concave structure at the bottom of the side wall of the collection part 310; the other half of the transfer part 320 is in the concave structure at the bottom of the side wall of the detection part 330. A storage cavity 311 is formed inside the collection part 310; a transfer cavity 321 is formed inside the transfer part 320; a detection cavity 331 is formed inside the detection part 330; the outer end (located on the outer side wall of the cup body 300) of the transfer cavity 321 is open, and the inner end is closed.

[0037] As Figure 3 and 5As shown, a liquid inlet 322 is formed in the middle of the transfer portion 320 of the cup body 300 facing the side wall of the storage cavity 311. A liquid outlet 323 is formed in the inner end of the transfer portion 320 of the cup body 300 facing the side wall of the detection cavity 331. The bottom of the storage cavity 311 is communicated with the middle of the transfer cavity 321 through the liquid inlet 322. The bottom of the detection cavity 331 is communicated with the inner end of the transfer cavity 321 through the liquid outlet 323. The liquid inlet 322 is located between the liquid outlet 323 and the outer end opening of the transfer cavity 321.

[0038] As Figure 2 shown, the cup lid 100 is threadedly connected to the top of the collection portion 310 of the cup body 300 to close the top opening of the storage cavity 311. The detection lid 500 is fixed to the top of the detection portion 330 of the cup body 300 to close the top opening of the detection cavity 331. An exhaust groove 501 is formed at the bottom edge of the bottom surface of the detection lid 500; the top of the detection cavity 331 is communicated with the external environment through the exhaust groove 501. The exhaust groove 501 is used to prevent the sample liquid from being unable to enter the detection cavity 331 due to air pressure. A reagent strip is provided in the detection plate 600 and is vertically installed in the detection cavity 331 for detecting the sample liquid flowing into the detection cavity 331.

[0039] As Figure 6 shown, the piston assembly 400 is slidably connected in the transfer cavity 321 and includes a sealing ring 401 and a transition ring 402. The transition ring 402 includes an integrally formed inner piston column, a connecting rod and an outer piston column. Both ends of the connecting rod are respectively connected to the opposite end faces of the spaced inner piston column and outer piston column. Sealing grooves are provided on both the inner piston column and the outer piston column. The sealing ring 401 is installed on the sealing groove. The outer edge of the sealing ring 401 abuts against the inner wall of the transfer cavity 321 to achieve sealing between the inner piston column, the outer piston column and the transfer cavity 321.

[0040] The opposite side surfaces of the inner piston column and the outer piston column and the inner wall of the transfer cavity 321 enclose a transition chamber. The transition chamber is a quantitative chamber, and its volume is equal to the volume of the sample liquid used for detection. The length of the outer piston column is greater than the length of the inner piston column, and sealing grooves and sealing rings 401 are provided at both ends of the outer circumferential surface of the outer piston column to improve the sealing effect; therefore, the transition ring 402 in this embodiment can also be called a quantitative ring. By adjusting the length of the outer piston column, the volume of the transition chamber can be adjusted without changing the overall length of the transition ring 402.

[0041] In the initial state, the inner piston column is located between the liquid inlet 322 and the liquid outlet 323. The outer piston column is located on the side of the liquid inlet 322 away from the inner piston column. The side surface of the outer piston column facing away from the inner piston column is flush with the outer end opening edge of the transfer chamber 321. The distance from the side surface of the inner piston column facing the outer piston column to the liquid outlet 323 is greater than the distance from the side surface of the outer piston column facing the inner piston column to the liquid inlet 322, so that the liquid inlet 322 and the liquid outlet 323 cannot communicate with the transition chamber simultaneously, ensuring that only the sample liquid with the volume of the transition chamber can enter the detection chamber 331 to achieve quantitative detection.

[0042] An installation groove is provided on the top surface of the cup lid 100. The push rod 200 is detachably inserted and installed in the installation groove. The push rod 200 includes an integrally formed holding section and an insertion section. The radial diameter of the insertion section is less than or equal to the diameter of the transfer chamber 321. Thus, the piston assembly 400 can be pushed inward by the push rod 200, so that the communication of the transition chamber with the liquid inlet 322 is changed to the communication with the liquid outlet 323.

[0043] A groove is provided on the outer end surface of the outer piston column to facilitate the insertion of the push rod 200.

[0044] The working principle of the present utility model:

[0045] First, add the sample to be measured into the storage chamber 311 and let it flow into the transition chamber; then use the push rod 200 to push the piston assembly 400 inward, so that the transition chamber communicates with the detection chamber 331, and the sample liquid in the transition chamber flows to the bottom of the detection chamber 331; the reagent strip in the detection plate 600 detects the sample liquid flowing to the bottom of the detection chamber 331.

[0046] Embodiment 2

[0047] A sample collection and detection integrated device. The difference between this embodiment and Embodiment 1 is as follows:

[0048] 1. There is no exhaust groove 501 on the detection lid 500.

[0049] 2. As Figure 7 shown, the transition ring 402 in this embodiment is an indefinite volume ring; the transition chamber formed by the inner piston column, the outer piston column and the inner wall of the transfer chamber 321 is an indefinite volume chamber. In the initial state, the distance from the side surface of the inner piston column facing the outer piston column to the liquid outlet 323 is less than the distance from the side surface of the outer piston column facing the inner piston column to the liquid inlet 322, so that the liquid inlet 322 and the liquid outlet 323 can communicate with the transition chamber simultaneously.

[0050] This embodiment uses the internal air pressure of the detection chamber to prevent excessive sample liquid from entering the detection chamber; specifically: in this embodiment, the sample can continuously flow into the detection chamber along the transition chamber. As the internal air pressure of the detection chamber increases, when the pressure reaches a certain value, the liquid will no longer flow in, thereby achieving quantitative detection.

[0051] Embodiment 3

[0052] As Figure 8 shown, a sample collection and detection integrated device. The difference between this embodiment and Embodiment 1 is that the position and attitude of the transfer part 320 in the cup body 300 are different. In this embodiment, the cylindrical transfer part 320 is buried at the bottom of the cup body 300, and its axis is parallel to the arrangement direction of the collection part 310 and the detection part 330.

[0053] A transfer chamber 321 is formed in the transfer part 320. Both ends of the transfer chamber 321 are open. One end opening is flush with the outer wall of the collection part 310 facing away from the detection part 330, and the other end opening communicates with the bottom of the detection chamber 331 as the liquid outlet 323. An inlet 322 is provided in the middle of the transfer part 320; the bottom of the storage chamber 311 communicates with the middle of the transfer chamber 321 through the inlet 322.

[0054] The piston assembly 400 is slidably connected in the transfer chamber 321. In the initial state, the inlet 322 is located between the inner piston column and the outer piston column, so that the transition chamber between the inner piston column and the outer piston column communicates with the storage chamber 311. When the piston assembly 400 is pushed inward to the limit position, the inner piston column enters the detection chamber, so that the transition chamber between the inner piston column and the outer piston column communicates with the detection chamber 331.

[0055] In some embodiments, an exhaust structure is provided on the top of the detection chamber 331 or the detection cover 500. The distance between the inner piston column and the outer piston column is less than the distance between the inlet 322 and the storage chamber 311; the detection chamber 331 and the storage chamber 311 cannot communicate with the transition chamber at the same time, ensuring that only the sample liquid with the volume of the transition chamber can enter the detection chamber 331 to achieve quantitative detection.

Claims

1. An integrated device for sample collection and detection, comprising a cup lid (100), a cup body (300), a piston assembly (400), a detection lid (500) and a detection plate (600); characterized in that: The described cup body (300) includes an integrally formed collection part (310), a transfer part (320), and a detection part (330); both the collection part (310) and the detection part (330) are hollow structures with a closed bottom and an open top; the transfer part (320) is located at the bottom of the collection part (310) or between the bottoms of the collection part (310) and the detection part (330); the transfer part (320) is in a cylindrical shape; A storage cavity (311) is formed inside the collection part (310); a transfer cavity (321) is formed inside the transfer part (320); a detection cavity (331) is formed inside the detection part (330); a reagent strip is arranged in the detection plate (600) and installed in the detection cavity (331); An inlet (322) and an outlet (323) are formed on the transfer part (320); the bottom of the storage cavity (311) is communicated with the transfer cavity (321) through the inlet (322); the bottom of the detection cavity (331) is communicated with the transfer cavity (321) through the outlet (323); The cup lid (100) is connected to the top opening of the collection part (310); the detection lid (500) is connected to the top opening of the detection part (330); the piston assembly (400) is slidably connected inside the transfer cavity (321); a transition chamber that can move with the piston assembly (400) is formed between the piston assembly (400) and the inner wall of the transfer cavity (321); in the initial state, the transition chamber is communicated with the inlet (322); after the piston assembly (400) slides inward into the transfer cavity (321), the transition chamber is communicated with the outlet (323).

2. The integrated sample collection and detection device according to claim 1, wherein: The piston assembly (400) includes a sealing ring (401) and a transition ring (402); the transition ring (402) includes an integrally formed inner piston column, a connecting rod, and an outer piston column; both ends of the connecting rod are respectively connected to the opposite end faces of the spaced inner piston column and outer piston column; sealing grooves are provided on both the inner piston column and the outer piston column; the sealing ring (401) is installed on the sealing groove; the outer edge of the sealing ring (401) abuts against the inner wall of the transfer cavity (321); a transition chamber is formed by the opposite side surfaces of the inner piston column and the outer piston column and the inner wall of the transfer cavity (321).

3. The integrated device for sample collection and detection according to claim 2, wherein: An exhaust structure is provided on the detection lid (500) and / or the detection part (330); in the initial state, the distance from the side surface of the inner piston column facing the outer piston column to the outlet (323) is greater than the distance from the side surface of the outer piston column facing the inner piston column to the inlet (322).

4. The integrated sample collection and detection device according to claim 3, characterized in that: An exhaust groove (501) is formed at the bottom edge of the bottom surface of the detection lid (500); the top of the detection cavity (331) is communicated with the external environment through the exhaust groove (501).

5. The integrated sample collection and detection device according to claim 2, wherein: The detection cavity (331) is not communicated with the external environment; in the initial state, the distance from the side surface of the inner piston column facing the outer piston column to the outlet (323) is less than the distance from the side surface of the outer piston column facing the inner piston column to the inlet (322).

6. The integrated device for sample collection and detection according to claim 1, wherein: It further includes a push rod (200); an installation groove is provided on the top surface of the cup lid (100); the push rod (200) is detachably inserted and installed in the installation groove and can be inserted into the transfer cavity (321).

7. The integrated sample collection and detection device according to claim 1, wherein: The cup body (300) is a one-time injection molded part; the collection part (310), the detection part (330) and the transfer part (320) are of a shell structure.

8. An integrated sample collection and detection device according to any one of claims 1-7, characterized in that: The transfer part (320) is located between the bottom of the collection part (310) and the detection part (330); the axis of the transfer part (320) is perpendicular to the arrangement direction of the collection part (310) and the detection part (330); the liquid outlet (323) is opened on the inner side wall of the detection cavity (331).

9. The integrated sample collection and detection device according to claim 8, wherein: Half of the transfer part (320) is in the concave structure at the bottom of the side wall of the collection part (310); the other half of the transfer part (320) is in the concave structure at the bottom of the side wall of the detection part (330).

10. A sample collection and detection integrated device according to any one of claims 1-7, characterized in that: The transfer part (320) is located at the bottom of the collection part (310); the axis of the transfer part (320) is parallel to the arrangement direction of the collection part (310) and the detection part (330); the liquid outlet (323) is the inner end of the detection cavity (331).

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