CN212111433U - Detection device - Google Patents

Abstract

The utility model discloses a detection device, including the cup, be equipped with first passageway in the cup, first passageway includes a sample entry, and two sample exports that are used for the sample to flow still are equipped with two chambeies that are separated in the cup, and two chambeies are first chamber, second chamber respectively, and first chamber is configured to be used for receiving and detects the sample that flows from the sample export, and the second chamber is configured to be used for receiving the sample that flows from the sample export, can be sealed and communicate between first chamber and the second chamber. The utility model discloses a device not only can carry out the instant messaging to the abuse medicine in the sample, can also collect and preserve the sample for laboratory secondary is confirmed and is detected and/or is used for DNA to detect, confirms whether there is the abuse of medicine, confirms the sample provider, and foretell detection sample all comes from same sample, ensures the accuracy of result, reduces the error, adopts this device to carry out the detection of abuse medicine, easy operation, and the accuracy is high.

Description

Detection device

Technical Field

The utility model particularly relates to a detection device.

Background

To combat the social problem of drug abuse, drug testing is performed in various industries such as employment, education, sports, law enforcement, medical, and the like. Drug testing generally requires the collection of test samples prior to testing.

In the market, a test strip is generally adopted for detecting a sample in real time, so that a detection result can be obtained quickly, and the detection result can be positive, negative or invalid. Such a detection method is simple, low in cost and easy to operate, but the detection method has some disadvantages, such as (1) compared with a laboratory accurate test, the accuracy of the detection result of the instant test strip is low, and the detection result is not credible; false positive, false negative or invalid results may occur, even with the best quality test strips, which may be due to dirty samples, or to deterioration of the chemicals used or to conditions of the sample itself that are not suitable for immediate testing, etc.; (2) when a positive result occurs, the sample provider usually argues that the sample is not self, and they require to prove that the sample is self, which requires DNA detection, but DNA detection needs to be performed again, because the original sample is possibly deteriorated or polluted and is not suitable for taking for DNA detection, but the re-acquired sample is not the same sample as the previous sample, and the sample provider does not trust, which leads to continued argumentation.

In another testing method, the sample is not tested immediately, but is collected by using a sample collecting device, and then the sample is sent to a laboratory where testing is performed. This detection method cannot obtain a preliminary detection result quickly.

Another method is to use a test strip to perform an instant test, collect the sample when a false positive occurs, send the sample to a laboratory, and perform a confirmation test in the laboratory, where the laboratory test is usually accurate, and the laboratory test can perform a quantitative test to determine the content of the drug of abuse in the sample. However, the detection method needs to collect the sample again, the collected sample is not the same sample as the previous sample, a series of supervision and supervision are needed in the process of collecting and detecting the sample again, a collector needs to affirm the identity of a sample provider faithfully and reliably, errors do not occur, the identity of the sample provider does not need to be mistaken or confused, and the like; during transport of the sample to the laboratory and during testing of the sample in the laboratory, it is ensured that the sample is not damaged or contaminated.

Currently, some test devices, after obtaining an initial result, cannot store the collected sample for later use in a confirmation test or DNA test. Many other sample collection and testing devices have difficulty performing secondary tests by extracting samples from the device. Still other detection devices are very complex in their design and manufacture and require the use of rather expensive materials.

SUMMERY OF THE UTILITY MODEL

To the above circumstances, for overcoming the defects of the prior art, the utility model provides a detection device.

In order to achieve the above object, the present invention provides the following technical solutions:

the detection device comprises a cup body, wherein a first channel is arranged in the cup body, the first channel comprises a sample inlet and two sample outlets for sample outflow, two separated cavities are further arranged in the cup body, the two cavities are a first cavity and a second cavity respectively, the first cavity is configured to be used for receiving and detecting the sample flowing out of the sample outlet, the second cavity is configured to be used for receiving the sample flowing out of the sample outlet, and the first cavity and the second cavity can be sealed and communicated.

Further, the piston can enter the first passage and block the communication between the first cavity and the second cavity.

Further, the piston is provided with a groove.

Furthermore, the cup cover is connected with the cup body in a buckling manner.

Furthermore, the first channel is fixedly connected with the cup cover, and a first channel inlet is formed in the cup cover.

Furthermore, a concave pit is arranged on the cup cover, and the inlet of the first channel is positioned in the concave pit.

Furthermore, a first opening and a second opening are further arranged in the pit, the first opening is communicated with the first cavity, and the second opening is communicated with the second cavity.

Further, a second channel is arranged on the bottom surface of the cup body, and the piston can move in the second channel.

Furthermore, a cross beam is arranged in the second channel and fixedly connected with the second channel, and a bump is connected to the cross beam.

Furthermore, the detection device also comprises a sample collector, wherein the sample collector comprises a collecting element, a connecting rod and a connecting head, the connecting head is connected with one end of the connecting rod, and the collecting element is connected with the other end of the connecting rod.

Further, a first sealing ring is connected to the collecting element.

Furthermore, the outer wall of the connector is provided with at least two circles of bulges or external threads, and the upper end of the connector is provided with an inlet.

Furthermore, the bottom surface of the connector is provided with a third opening and a fourth opening, and the positions of the third opening and the fourth opening respectively correspond to the first opening and the second opening.

Further, the bottom surface of the connector has a tip having a height lower than that of the outer wall of the connector.

Further, this detection device still includes the connection cap, connects the cap and can be connected or threaded connection with the connector buckle.

Furthermore, the connecting cap is provided with two cavities, namely an inner cavity and an outer cavity; the inner cavity is configured to be used for placing a buffer reagent or placing a buffer reagent containing device, and the side wall of the outer cavity is provided with a clamping hook or an internal thread.

The utility model has the advantages that:

the utility model discloses a device can cut off the intercommunication between first chamber and the second chamber with the sample reposition of redundant personnel to different cavities in. The utility model discloses a device not only can carry out the instant messaging to the abuse medicine in the sample, can also collect and preserve the sample for laboratory secondary is confirmed and is detected and/or is used for DNA to detect, confirms whether there is the abuse of medicine, confirms the sample provider, and foretell detection sample all comes from same sample, ensures the accuracy of result, reduces the error, adopts this device to carry out the detection of abuse medicine, easy operation, and the accuracy is high.

Drawings

Fig. 1 is a schematic structural diagram of the device of the present invention.

Fig. 2 is an exploded view of the device of the present invention.

FIG. 3 is an exploded view of the cup and lid (with portions of the cup hidden to show the internal structure of the cup).

Fig. 4 is a cross-sectional view of fig. 2.

Fig. 5 is a schematic view of the structure of the first channel connected with the cup cover.

Fig. 6 is a cross-sectional view of the device of the present invention in a state of collecting a sample.

Fig. 7 is a cross-sectional view of the device of the present invention when the communication between the first and second chambers is interrupted.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, and it should be noted that the detailed description is only for describing the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 7, a detection device comprises a cup body 3, a first channel 4 is arranged in the cup body 3, the first channel 4 comprises a sample inlet 10, two sample outlets 5 for sample outflow, and two separated cavities are arranged in the cup body, the two cavities are a first cavity 1 and a second cavity 2 respectively, the first cavity 1 is configured to receive and detect the sample flowing out from the sample outlet, the second cavity 2 is configured to receive the sample flowing out from the sample outlet, and the first cavity 1 and the second cavity 2 can be closed and communicated.

In some preferred modes, a partition plate 31 is arranged in the cup body 3, and the first channel is fixedly connected to the partition plate 31, and in some preferred modes, as shown in fig. 3, a sliding groove 32 is arranged outside the first channel, and the sliding groove 32 is in sliding connection with the partition plate 31 to fix the first channel in the cup body 3.

In some preferred modes, at least one detection element is arranged in the first cavity 1, and the detection element is used for detecting the existence or the quantity of the analyte in the sample, so that the real-time detection of the sample can be realized, and the detection result can be obtained. In some preferred ways, the detection element may be provided on the lateral inner wall of the first chamber 1. In some preferred modes, a placing part for placing the detection element is further arranged on the inner wall of the side surface of the first cavity 1, the detection element can be placed in the placing part, the placing part and the inner wall of the side surface of the first cavity 1 can be fixedly connected, the placing part and the inner wall of the side surface of the first cavity 1 can also be detachably connected, for example, an inserting plate and a slot are matched, the placing part can be in an inserting plate mode, and the inner wall of the side surface of the first cavity 1 is provided with a slot. In some preferred modes, a card slot 6 can be arranged on the placing component, and the detection element can be placed in the card slot 6.

In some preferred embodiments, the "test element" can be any test device that provides a test result. In some embodiments, the detection element is a test strip. The test strip may have specific binding molecules immobilized on the test strip and reagents for performing an immunoassay. However, in other embodiments, the test element may also contain a chemical reaction-based test agent, a biological-based test agent (e.g., an enzyme or ELISA assay), or a fluorescent-based test agent, among others. In addition, in other embodiments, the test element may have other reagents thereon that can be used to detect the presence or quantity of the analyte in the sample. In one embodiment, the detection element comprises a reagent for detecting the presence of a drug of abuse. However, in other embodiments, the detection element may be any element that provides an indication of the result of the assay. For example, some chemical or biological indicator reagents may be used.

The sample detected by the utility model can be any fluid sample. Fluid samples suitable for testing by the present invention include oral fluid, saliva, whole blood, serum, plasma, urine, spinal fluid, biological extracts, mucus, and tissue. "saliva" refers to the secretions of the salivary glands. An "oral fluid" is any fluid present in the oral cavity. The analyte to be detected may be any analyte for which the detection element may be made. In one embodiment, the analyte is a drug of abuse. The analyte of interest may also be a hormone, protein, peptide, nucleic acid molecule, pathogenic agent, and specific binding pair member. A "drug of abuse" (DOA) is a drug used for non-medical purposes, usually for hallucinogenic effects. Abuse of such drugs can lead to physical and mental harm and, in some cases, dependence, addiction, and even death. Examples of DOAs include cocaine, amphetamines (e.g., black beans, white beans, amphetamine tablets, dextrorotation amphetamines, dexes, beans), methamphetamines (crank, methamphetamine, crystal, speed), barbiturates (RochePharmaceuticals, Nutley, New Jersey), sedatives (i.e., hypnotics), lysergic acid diethylamide (LSD), sedatives (downs, gofiballs, barbs, blue devils, yellows, lues), tricyclic antidepressants (TCAs, e.g., imipramine, amitriptyline, and doxepin), phencyclidine (PCP), tetrahydrocannabinol, and opiates (e.g., morphine, opium, codeine, heroin).

In some preferred modes, as shown in fig. 2-4 and 6-7, the detection device of the present invention further includes a piston 7, the piston 7 can enter the first channel 4, move in the first channel 4, and can separate the communication between the first chamber 1 and the second chamber 2, after separating, the first chamber 1 is an independent chamber, and can be used for detecting a sample, and the second chamber 2 is an independent chamber, and can be used for storing a sample, and is used for secondary confirmation detection or DNA detection.

In some preferred forms, as shown in figures 2-4, the piston 7 is provided with a recess 8 for cooperation with other components. The recess 8 may be of any suitable shape, in this embodiment the recess 8 is rectangular.

In some preferred modes, as shown in fig. 1-7, the detection device of the present invention further includes a lid 9, the lid 9 and the cup 3 can be fixedly connected, and in other preferred modes, the lid 9 and the cup 3 can be detachably connected, in this embodiment, as shown in fig. 1-7, the lid 9 and the cup 3 are snap-fit connected, so as to facilitate the assembly of the device, and facilitate the separation of the lid and the cup, which is beneficial for taking out the liquid sample in the second chamber for secondary confirmation detection or DNA detection.

In some preferred forms, as shown in fig. 2-5, the first channel 4 is fixedly connected to the lid 9, and the lid 9 is provided with a sample inlet 10, and when the lid is fixed, the first channel is fixed.

In some preferred forms, as shown in fig. 2-7, the lid 9 is provided with a well 11, and the sample inlet 10 is located in the well 11.

In some preferred modes, as shown in fig. 2-3, a first opening 12 and a second opening 13 are further arranged in the pit 11, the first opening 12 is communicated with the first cavity 1, and the second opening 13 is communicated with the second cavity 2. The first opening 12 and the second opening 13 are arranged to allow some functional reagents or other substances to be shunted into the first chamber 1 and the second chamber 2, respectively.

In some preferred forms, as shown in figures 3-4, the cup 3 is provided with a second channel 14 on the underside, the piston 7 being able to move within the second channel 14. In some preferred forms, as shown in fig. 3-4 and 6-7, the second channel 14 coincides with the central axis of the first channel 4, so that the piston 7 can smoothly enter the first channel 4 from the second channel 14, and the piston 7 can seal the bottom surface of the cup body 3, so that the bottom surface of the cup body 3 cannot leak liquid; when one part of the piston 7 enters the first passage 4 and the other part of the piston 7 is positioned in the second passage 14, as shown in fig. 7, the piston 7 can block the communication between the first chamber 1 and the second chamber 2. In some preferred forms, as shown in fig. 6-7, the second channel 14 is of a uniform size with the first channel 4, and in other preferred forms, the second channel 14 may be of a non-uniform size with the first channel 4.

In some preferred modes, as shown in fig. 3, a cross beam is arranged in the second channel 14, the cross beam is fixedly connected with the second channel 14, and a lug 15 is connected to the cross beam. The projection 15 is dimensioned to fit into the recess 8 in the piston 7. In some preferred forms, the projections 15 are smaller at the upper end and larger at the lower end, which facilitates the diversion of the sample.

In some preferred modes, as shown in fig. 2 and 4, the detection device of the present invention further includes a sample collector, the sample collector includes a collecting element 16, a connecting rod 17, and a connecting head 18, the connecting head 18 is connected to one end of the connecting rod 17, and the collecting element 16 is connected to the other end of the connecting rod 17. The collecting element 16 can collect or release a liquid sample, and the collecting element 16 is fixedly connected with the connecting rod 17, so that the collecting element 16 can collect, transfer and release the sample. In some preferred forms, the collection element 16 is fixedly attached to the linkage rod 17, and the collection element 16 may be adhered or welded to the linkage rod 17 by a sealant or a hot melt adhesive or other glue, or may be attached to the linkage rod 17 by any suitable means. In other preferred forms, the acquisition element 16 is removably connected to the connecting rod 17. In some preferred modes, as shown in fig. 4, a first sealing ring 19 is connected to the upper end of the collecting element 16, and the first sealing ring 19 can seal the first passage 4 to prevent air leakage and liquid leakage and avoid liquid backflow.

In some preferred forms, the acquisition element 16 is compressible, and the compressible acquisition element 16 may be used to absorb the liquid sample and then the acquisition element 16 may be caused to release the sample by squeezing the acquisition element 16. Compressible refers to a material property in which the shape of a material can be deformed by mechanical pressure to squeeze liquid out of the material while the material retains the liquid. The acquisition element 16 may be made of any material that absorbs and retains liquid. In some embodiments, the acquisition element 16 is a sponge, but in other embodiments it may be a nonwoven, absorbent paper, nylon, cotton, or any other material that can absorb and retain liquids. When the material of the acquisition element 16 is a sponge, it may be natural or synthetic. In the illustrated embodiment, as shown in fig. 3-5, the collection element 16 is a cylindrical sponge material adapted to be placed in the mouth of a subject to collect saliva. In other embodiments, however, the collection element 16 may be any suitable and convenient shape. In certain embodiments, the collection element 16 is treated with a chemical composition (e.g., citrate or other chemical) to promote salivation and facilitate absorption by the collection element 16.

In some preferred modes, as shown in fig. 4, the connecting head 18 is fixedly connected with one end of the connecting rod 17, and the connecting rod 17 is integrally connected with the connecting head 18. In some preferred forms, as shown in fig. 2 and 4, the outer wall of the connecting head 18 is provided with at least two circles of protrusions 20 for cooperating with other components and facilitating the holding and pinching of the operator. In some preferred forms, the outer surface of the connecting head 18 includes at least a first ring of protrusions and a second ring of protrusions, the first ring of protrusions and the second ring of protrusions being configured for positioning; in some preferred forms, as shown in fig. 4, the lower end of the outer surface of the connecting head 18 is provided with a second sealing ring 21, and in other preferred forms, the outer surface of the connecting head 18 is provided with external threads for matching with other components. In some preferred forms, as shown in fig. 4, the connecting head 18 has a barrel shape with a hollow interior, and the upper end of the connecting head 18 is provided with an inlet configured to allow other components to enter.

In some preferred embodiments, as shown in fig. 4, the bottom surface of the connecting head 18 is provided with a third opening 22 and a fourth opening 23, the positions of the third opening 22 and the fourth opening 23 respectively correspond to the first opening 12 and the second opening 13, the third opening 22 can be communicated with the first opening 12, and the fourth opening 23 can be communicated with the second opening 13.

In some preferred forms, as shown in fig. 4, the bottom surface of the connection head 18 has a tip 24, and the height of the tip 24 is lower than the height of the outer wall of the connection head 18, so as to avoid pricking an operator.

In some preferred forms, as shown in fig. 4,6-7, the connecting device further comprises a connecting cap 25, the connecting cap 25 can be detachably connected with the connecting head 18, in some preferred forms, the connecting cap 25 is in snap-fit connection with the connecting head 18, and in other preferred forms, the connecting cap 25 is in threaded connection with the connecting head 18.

In some preferred modes, the connecting cap 25 has two cavities, an inner cavity 26 and an outer cavity 27; the inner cavity 26 is configured for placing a buffer reagent or a buffer reagent holding device, and in some preferred modes, the inner cavity 26 is configured for placing the buffer reagent, and the open end of the inner cavity is closed by the closing layer, so that the buffer reagent is closed in the inner cavity. In some preferred manners, the inner wall of the outer cavity 27 is provided with a hook or an internal thread, in this embodiment, as shown in fig. 4,6-7, the inner wall of the outer cavity 27 is provided with a hook 28, and the hook 28 can cooperate with the protrusion 20 on the connector 18 to realize the connection and fixation of the connecting cap 25 and the connector 18. In some preferred forms, the catch 28 is engageable with the first bead in a first position 41, as shown in FIG. 4, in which the tip 24 does not puncture the buffer reagent holding device or puncture the closure. The hook 28 can engage the second bead at a second position 42, as shown in fig. 6-7, where the tip 24 pierces the buffer reagent container or pierces the closure, the cap completely covers the connector, and the cap can no longer cover the connector. In other embodiments, the inner wall of the outer cavity 27 is provided with an internal thread, which can be screwed with an external thread on the connector 18 to fix the connector 18 to the connecting cap 25. In some preferred forms, a third sealing ring 29 is also provided in the connecting cap 25.

In some preferred forms, the buffered reagent holding means has a fixed shape that can match the shape of the inner cavity 26 of the connecting cap 25, so that the inner cavity 26 can fix the buffered reagent holding means inside the connecting cap. In other preferred forms, the buffer reagent holding means has no fixed shape and has a shape that can be changed when filled with buffer reagent; when the buffer reagent is released, the shape of the buffer reagent holding device changes. The buffer reagent containing device can be a capsule or a bag capable of storing the buffer reagent, and after the buffer reagent is filled, the buffer reagent containing device is placed in the inner cavity 26 of the connecting cap 25, and the inner cavity 26 can fix the buffer reagent containing device. In some preferred modes, a barrier is arranged in the inner cavity 26 and used for fixing the buffer reagent containing device, but the sharp puncture and the buffer reagent containing device entering are not influenced, and the connecting cap covering connector is not influenced. In some preferred forms, the buffer reagent may be a diluent or a solution that reduces the viscosity of the liquid sample or other functional reagent; for example, some samples may not be tested in their original state, or the test results may be unsatisfactory, and often require pre-treatment to change their physical or chemical properties, for example, by buffer solutions to help dilute or buffer the samples before testing.

The utility model also provides a use method of this detection device, including following step: (the samples are described in connection with FIGS. 1-7 for saliva samples)

(1) Placing the collection element 16 in the user's mouth, the collection element 16 continuously absorbing saliva or otherwise collecting saliva samples;

(2) the piston 7 is plugged into the second channel 14, as shown in fig. 3 and 6; mounting the connecting cap 25 on the connecting head 18 as shown in FIG. 4, (mounting the connecting cap 25 on the connecting head 18, which may also be performed before the collecting element collects the sample in step (1)) when the tip 24 is not in contact with the buffer agent containing device or the sealing layer, the buffer agent does not flow out, inserting the collecting element 16 into the first channel 4, moving the collecting element 16 downwards, the connecting head 18 entering the concave pit 11 on the cup cover 9, the whole device being in a sealed state, continuing to move the collecting element 16 downwards until the collecting element cannot move, moving the connecting cap 25 downwards to cover the connecting head 18 as shown in FIG. 6, wherein the buffer agent containing device is pierced by the tip 24, the buffer agent flows out, the buffer agent flows to two places, one enters the first chamber 1 through the third opening 22 and the first opening 12, and the other enters the fourth opening 23, The second opening 13 enters the second chamber 2, and at the same time, this increases the pressure in the first channel 4, the collecting element 16 is subjected to air pressure, the sample is released, and the sample flows out of the two sample outlets 5 into the first chamber 1 and the second chamber 2, respectively;

(3) after a certain amount of liquid sample is stored in the first cavity 1 and the second cavity 2, the piston 7 is pushed inwards, one part of the piston 7 enters the first channel 4, and the other part enters the second channel 14, as shown in fig. 6, the first cavity 1 is separated from the second cavity 2, the first cavity 1 and the second cavity 2 form an independent cavity, if a detection element is placed in the first cavity 1, instant detection on the sample can be realized, and the sample stored in the second cavity 2 can be used for secondary confirmation detection or used for DNA detection or used for detection of other substances.

In this embodiment, the liquid sample is a saliva sample, and test strips are placed in the first chamber 11, which test strips are capable of detecting abused substances, such as cocaine, amphetamines, sedatives, etc., in a timely manner, giving a preliminary test result. The second chamber 2 stores a quantity of sample that can be used for secondary confirmation testing or for DNA testing or for testing of other substances. After the detection, the sample collector can be taken out firstly, and then the sample in the second cavity can be taken out through the second opening for secondary detection or DNA detection or other detection.

The utility model discloses a device not only can carry out the instant messaging to the abuse medicine in the sample, can also be sent the laboratory and carry out the secondary and confirm the detection, perhaps is used for DNA to detect, confirms the sample provider, and foretell detection sample all comes from same sample, can ensure the accuracy of result, reduces the error, adopts this device to carry out the detection of abuse medicine, easy operation, and the accuracy is high.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Claims (16)

1. The detection device is characterized by comprising a cup body, wherein a first channel is arranged in the cup body, the first channel comprises a sample inlet and two sample outlets for samples to flow out, two separated cavities are further arranged in the cup body, the two cavities are a first cavity and a second cavity respectively, the first cavity is configured to receive and detect the samples flowing out of the sample outlets, the second cavity is configured to receive the samples flowing out of the sample outlets, and the first cavity and the second cavity can be sealed and communicated.

2. The testing device of claim 1, further comprising a piston, the piston being capable of entering the first passage and blocking communication between the first chamber and the second chamber.

3. A testing device according to claim 2 wherein the piston is provided with a recess.

4. The detecting device for detecting the rotation of the motor rotor as claimed in claim 3, wherein the detecting device further comprises a cup cover, and the cup cover is connected with the cup body in a buckling mode.

5. A testing device according to claim 4 wherein the first channel is fixedly attached to a cap which is provided with the sample inlet.

6. A test device according to claim 5, wherein the lid is provided with a well, and the sample inlet is located in the well.

7. A testing device according to claim 6 wherein the well further comprises a first opening and a second opening, the first opening communicating with the first chamber and the second opening communicating with the second chamber.

8. A testing device according to claim 2 wherein the cup body has a second channel in its underside in which the piston is movable.

9. The detecting device for detecting the rotation of a motor rotor as claimed in claim 8, wherein a cross beam is arranged in the second channel and fixedly connected with the second channel, and a convex block is connected to the cross beam.

10. The detecting device according to claim 1, wherein the detecting device further comprises a sample collector, the sample collector comprises a collecting element, a connecting rod and a connector, the connector is connected with one end of the connecting rod, and the collecting element is connected with the other end of the connecting rod.

11. The test device of claim 10, wherein the collection element has a first seal coupled thereto.

12. The detecting device for detecting the rotation of a motor rotor as claimed in claim 10, wherein the outer wall of the connecting head is provided with at least two circles of protrusions or is provided with external threads, and the upper end of the connecting head is provided with the inlet.

13. The detecting device for detecting the rotation of a motor rotor as claimed in claim 10, wherein the bottom surface of the connecting head is provided with a third opening and a fourth opening, and the positions of the third opening and the fourth opening respectively correspond to the first opening and the second opening.

14. The detecting device for detecting the rotation of a motor rotor as claimed in claim 10, wherein the bottom surface of the connecting head has a pointed end whose height is lower than that of the outer wall of the connecting head.

15. The detecting device for detecting the rotation of a motor rotor as claimed in claim 10, wherein the detecting device further comprises a connecting cap, and the connecting cap can be buckled or screwed with the connecting head.

16. The detecting device for detecting the rotation of a motor rotor as claimed in claim 15, wherein the connecting cap is provided with two cavities, namely an inner cavity and an outer cavity; the inner cavity is configured to be used for placing a buffer reagent or placing a buffer reagent containing device, and the side wall of the outer cavity is provided with a clamping hook or an internal thread.

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