Liquid transfer unit, liquid transfer device and automatic detection equipment

Abstract

The utility model provides a liquid transfer unit, a liquid transfer device and automatic detection equipment. The liquid transfer unit comprises a transfer needle, a transfer base, a buffer component and a transfer driving mechanism, the transfer base is provided with a mounting cavity and a first through hole which are communicated with each other, and at least part of the buffer assembly is arranged in the mounting cavity; one end of the transfer needle penetrates through the buffer assembly and the first through hole and extends out of the transfer base, the other end of the transfer needle is connected with the transfer driving mechanism, and the transfer driving mechanism drives the transfer needle to suck and release liquid to be transferred. At least part of the buffer assembly can deform when the transfer needle is extruded by external force. In the liquid transferring process, if the position of the transferring needle is improper, the transferring needle possibly makes hard contact with other objects, at the moment, the objects can reversely extrude the transferring needle, and due to the fact that the buffering assembly can deform under the extrusion effect, the transferring needle can be stressed to move upwards; therefore, damage to the transfer needle can be effectively reduced, and blockage of the transfer needle is avoided.

Description

Technical Field

[0001] This utility model relates to the field of biological detection technology, and in particular to a liquid transfer unit, device and automated detection equipment. Background Technology

[0002] In the field of biodetection technology, detection based on immunological and physicochemical reaction analysis is a common principle, leading to a series of technical products such as immunochromatography and chromogenic slides based on paper materials. These products have extensive applications in areas such as agricultural product food safety, in vitro diagnostics, and environmental monitoring.

[0003] Current immunological and physicochemical reaction analysis tests are manual, which usually involve the addition and transfer of liquids. These processes typically require the use of instruments such as injection needles. However, if the injection needle is not used properly, it may come into hard contact with other objects, which can easily lead to needle damage or blockage. This results in low overall testing efficiency and accuracy.

[0004] In view of the above, this utility model is hereby proposed. Utility Model Content

[0005] This invention provides a liquid transfer unit, device, and automated testing equipment to solve the technical problems of needle damage or needle blockage in existing systems.

[0006] In a first aspect, this utility model provides a liquid transfer unit, comprising a transfer needle, a transfer base, a buffer assembly, and a transfer drive mechanism. The transfer base has an interconnected mounting cavity and a first through hole, and at least a portion of the buffer assembly is disposed within the mounting cavity. One end of the transfer needle passes through the buffer assembly and the first through hole and extends beyond the transfer base, while the other end is connected to the transfer drive mechanism, which drives the transfer needle to aspirate and release the liquid to be transferred. At least a portion of the buffer assembly is capable of deforming under external pressure applied to the transfer needle.

[0007] In some embodiments, the buffer assembly includes a guide, an elastic element, and a limiting element. At least a portion of the guide is disposed in the mounting cavity and through which the transfer needle passes, and the transfer needle is connected to the guide; the limiting element covers the mounting cavity and is connected to the transfer base; the elastic element is disposed axially between the guide and the limiting element and through which the transfer needle passes.

[0008] In some embodiments, the liquid transfer unit further includes a sensing component disposed on the guide member for sensing the displacement of the transfer needle under external pressure.

[0009] In some embodiments, the transfer base is further provided with an opening slot communicating with the mounting cavity. The guide includes a cylindrical portion and a mounting portion. The cylindrical portion is disposed in the mounting cavity and has a second through hole through which the transfer needle passes. The mounting portion protrudes radially from the cylindrical portion and extends out of the mounting cavity via the opening slot. At least a portion of the sensing component is disposed on the mounting portion.

[0010] In some embodiments, the sensing component includes a sensing element and a sensing switch. The sensing element is disposed on the mounting portion, and the sensing switch is disposed on the transfer base. The sensing switch is configured to trigger an alarm when the position of the sensing element exceeds a preset position.

[0011] In some embodiments, the sensing component includes a displacement sensor disposed on the mounting portion and used to sense whether the displacement of the transfer needle under external pressure exceeds a preset threshold.

[0012] In some embodiments, the transfer needle has at least one notch at one end of the buffer assembly and the first through hole, and each notch communicates with the internal cavity of the transfer needle.

[0013] In a second aspect, the present invention provides a liquid transfer device, which includes at least one adjustment drive mechanism and at least one liquid transfer unit as described above, wherein each adjustment drive mechanism is connected to a corresponding liquid transfer unit for adjusting the position of the liquid transfer unit.

[0014] In some embodiments, each of the adjustment drive mechanisms includes a first adjustment drive unit, a second adjustment drive unit, and a third adjustment drive unit. The first adjustment drive unit is connected to the liquid transfer unit and is used to drive the liquid transfer unit to move along a second direction, where the second direction is the axial direction of the buffer assembly. The second adjustment drive unit is connected to the first adjustment drive unit and is used to drive the liquid transfer unit to move along a third direction. The third adjustment drive unit is connected to the second adjustment drive unit and is used to drive the third adjustment drive unit to move along the first direction.

[0015] In some embodiments, there are multiple liquid transfer units, each corresponding to one of the first, second, and third adjustment drive units. The liquid transfer device also includes a mounting plate on which multiple third adjustment drive units are mounted. Each third adjustment drive unit is connected to a corresponding second adjustment drive unit, each second adjustment drive unit is connected to a corresponding first adjustment drive unit, and each first adjustment drive unit is connected to a corresponding liquid transfer unit.

[0016] In some embodiments, the first adjustment drive unit includes a first connecting seat, a first guide rail, and a first drive mechanism. The first connecting seat is connected to the liquid transfer unit and slidably connected to the first guide rail. The first guide rail extends along the second direction. The first drive mechanism is connected to the first connecting seat and is used to drive the first connecting seat to move along the first guide rail.

[0017] In some embodiments, the second adjustment drive unit includes a second connecting seat, a second guide rail, and a second drive mechanism. The second connecting seat is connected to the first adjustment drive unit and slidably connected to the second guide rail. The second guide rail extends along the third direction. The second drive mechanism is connected to the second connecting seat and is used to drive the second connecting seat to move along the second guide rail.

[0018] In some embodiments, the third adjustment drive unit includes a third belt, a third connecting seat, a third guide rail, and a third drive motor. The third belt is connected to the third connecting seat, the third connecting seat is connected to the second adjustment drive unit and slidably connected to the third guide rail, the third guide rail extends along the first direction, and the third drive motor is used to drive the third belt to rotate so that the third belt drives the third connecting seat to move along the third guide rail.

[0019] In a third aspect, this utility model provides an automated testing device, comprising a card compartment module, a test card transfer module, a puncture scanning module, a sample dispensing module, a pipetting module, and an analysis module. The card compartment module is used to place test cards and push them onto the test card transfer module; the test card transfer module is used to transfer test cards between the puncture scanning module, the sample dispensing module, the pipetting module, and the analysis module; the sample dispensing module is used to add the sample to be tested into the reagent slot on the test card; the pipetting module is used to mix the sample to be tested with the test reagent in the reagent slot and transfer it to the sample slot on the test card; the analysis module is used to acquire and analyze the sample image in the sample slot to obtain the test result of the sample to be tested. At least one of the sample dispensing module and the pipetting module employs the liquid transfer device described above.

[0020] Compared with the prior art, the liquid transfer unit, device, and automated testing equipment provided by this utility model have at least the following advantages:

[0021] In this application, during the process of transferring liquid in the liquid transfer device, if the position of the transfer needle is improper, the transfer needle may come into hard contact with other objects. At this time, the object will squeeze the transfer needle in the opposite direction. Since the buffer component can deform under the squeezing action, the transfer needle can be forced to move upward, thereby effectively reducing the damage to the transfer needle and avoiding blockage of the transfer needle.

[0022] Other features and advantages of the liquid transfer unit, device, and automated testing equipment provided by this utility model will be further explained in the following specific embodiments. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 A perspective view of the liquid transfer device provided in the embodiments of this application;

[0025] Figure 2 A perspective view of the liquid transfer unit provided in an embodiment of this application;

[0026] Figure 3 A perspective view of the transfer base provided in the embodiments of this application;

[0027] Figure 4This is a schematic diagram showing the connection between the guide and the transfer needle provided in an embodiment of this application;

[0028] Figure 5 for Figure 4 Enlarged view of the circled area;

[0029] Figure 6 A perspective view of an adjustment drive mechanism provided in an embodiment of this application;

[0030] Figure 7 A perspective view of another adjustment drive mechanism provided in an embodiment of this application;

[0031] Figure 8 A perspective view of yet another adjustment drive mechanism provided in an embodiment of this application;

[0032] Figure 9 An overall perspective view of the automated testing equipment provided in the embodiments of this application;

[0033] Figure 10 A perspective view of the test card provided in an embodiment of this application.

[0034] The attached figures are labeled as follows:

[0035] 10. Liquid transfer unit;

[0036] 11. Transfer needle; 111. Notch; 12. Transfer base; 121. Mounting cavity; 122. First through hole; 123. Opening groove; 13. Buffer assembly; 131. Guide component; 1311. Cylinder part; 1312. Mounting part; 132. Elastic component; 133. Limiting component; 14. Sensing assembly; 141. Sensing plate; 142. Inductive switch;

[0037] 20. Adjust the drive mechanism;

[0038] 21. First adjustment drive unit; 211. First connecting seat; 122. First guide rail; 213. First drive mechanism; 2131. First drive motor; 2132. First belt;

[0039] 22. Second adjustment drive unit; 221. Second connecting seat; 222. Second guide rail; 223. Second drive mechanism; 2231. Second drive motor; 2232. Second belt; 2233. Lead screw; 2234. Lead screw sleeve;

[0040] 23. Third adjustment drive unit; 231. Third belt; 232. Third connecting seat; 233. Third guide rail; 234. Third drive motor;

[0041] 30. Mounting plate;

[0042] 100. Card compartment module; 200. Test card transfer module; 300. Puncture scanning module; 400. Sample dispensing module; 500. Pipetting module;

[0043] 600. Analysis module;

[0044] A. Test card; A1. Reagent container; A2. Sample container;

[0045] L1, first direction; L2, second direction; L3, third direction. Detailed Implementation

[0046] In the description of this utility model, it should be understood that if terms such as "center," "inner," "outer," "axial," "radial," and "circumferential" appear, indicating orientation or positional relationship, unless otherwise specified, they are understood to be based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] Furthermore, features specified with "first" or "second" for descriptive purposes only should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Features specified with "first" or "second" may explicitly or implicitly include at least one of the specified features. The description of "multiple" generally means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, a connection can be fixed, detachable, or integral; it can be mechanical or electrical; it can be direct or indirect via an intermediate medium; it can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0049] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Figure 1 This is a perspective view of the liquid transfer device provided in the embodiments of this application. Figure 2 This is a perspective view of the liquid transfer unit provided in an embodiment of this application.

[0051] Please see Figure 1 and Figure 2 The liquid transfer device in this embodiment includes at least one adjustment drive mechanism 20 and at least one liquid transfer unit 10. Each adjustment drive mechanism 20 is connected to a corresponding liquid transfer unit 10 and is used to adjust the position of the liquid transfer unit 10. That is, the adjustment drive mechanism 20 and the liquid transfer unit 10 are arranged in a one-to-one correspondence.

[0052] Each liquid transfer unit 10 is used to transfer liquid, and the liquid transfer unit 10 specifically includes a transfer needle 11, a transfer base 12, a buffer assembly 13, and a transfer drive mechanism (not shown).

[0053] The transfer base 12 is provided with an interconnected mounting cavity 121 and a first through hole 122. At least a portion of the buffer assembly 13 is disposed in the mounting cavity 121. One end of the transfer needle 11 passes through the buffer assembly 13 and the first through hole 122 and extends out of the transfer base 12, while the other end is connected to a transfer drive mechanism. The transfer drive mechanism is used to drive the transfer needle 11 to draw in and release the liquid to be transferred, thereby realizing the transfer of liquid from one position to another. At least a portion of the buffer assembly 13 can deform under the pressure of an external force on the transfer needle 11.

[0054] Understandably, the transfer drive mechanism may include a pump and a pipeline for supplying liquid flow, and may also be equipped with valves to control the liquid flow path in order to achieve the suction and release of the liquid to be transferred.

[0055] During the liquid transfer process of the liquid transfer device of this application, if the position of the transfer needle 11 is improper, the transfer needle 11 may come into hard contact with other objects (such as test card A, table, tabletop or other components). At this time, the object will squeeze the transfer needle 11 in the opposite direction. Since the buffer component 13 can deform under the squeezing action, the transfer needle 11 can be forced to move upward, thereby effectively reducing the damage to the transfer needle 11 and avoiding the blockage of the transfer needle 11.

[0056] Please continue reading. Figure 2 The buffer assembly 13 in this embodiment includes a guide 131, an elastic member 132, and a limiting member 133.

[0057] At least a portion of the guide member 131 is disposed in the mounting cavity 121 and through which the transfer needle 11 passes, and the guide member 131 is connected to the transfer needle 11. The limiting member 133 covers the mounting cavity 121 and is connected to the transfer base 12, and the elastic member 132 is disposed axially between the guide member 131 and the limiting member 133 and through which the transfer needle 11 passes.

[0058] In this embodiment, the transfer needle 11 is positioned and installed by the guide member 131, and the elastic member 132 provides upward movement space for the transfer needle 11 through the force deformation. When the transfer needle 11 comes into hard contact with other objects, the objects will squeeze the transfer needle 11 in the opposite direction. At this time, based on the cooperation of the guide member 131, the elastic member 132 and the limiting member 133, the elastic member 132 is squeezed and compressed by the guide member 131 and the limiting member 133, so that the transfer needle 11 can move upward along its axial direction with the guide member 131, thereby effectively reducing the damage to the transfer needle 11 and avoiding the blockage of the transfer needle 11.

[0059] Please continue reading. Figure 2 The liquid transfer unit in this embodiment further includes a sensing component 14, which is disposed on the guide member 131 and used to sense the displacement of the transfer needle 11 under external pressure. Therefore, since the sensing component 14 can sense the displacement of the transfer needle 11 under external pressure, it is convenient to control the liquid transfer process. For example, when the displacement of the transfer needle 11 under external pressure sensed by the sensing component 14 exceeds a preset displacement, an alarm can be triggered or the liquid transfer of the liquid transfer unit can be paused.

[0060] Figure 3 This is a perspective view of the transfer base provided in an embodiment of this application. Figure 4 This is a schematic diagram showing the connection between the guide and the transfer needle provided in an embodiment of this application. Figure 5 for Figure 4 An enlarged view of the circled area.

[0061] Please see Figures 2 to 4The transfer base 12 is also provided with an opening slot 123 communicating with the mounting cavity 121. The guide member 131 includes a cylindrical part 1311 and a mounting part 1312. The cylindrical part 1311 is disposed in the mounting cavity 121 and is provided with a second through hole for the transfer needle 11 to pass through. The mounting part 1312 protrudes radially from the cylindrical part 1311 and extends out of the mounting cavity 121 via the opening slot 123. At least a portion of the sensing component 14 is disposed on the mounting part 1312.

[0062] In this embodiment, when the transfer needle 11 makes hard contact with other objects, during the upward movement of the transfer needle 11, the cylindrical part 1311 moves upward along the mounting cavity 121 and the mounting part 1312 moves upward along the opening groove 123. Thus, based on the cooperation of different parts of the transfer base 12 and the guide member 131, the guiding accuracy of the transfer needle 11 is improved.

[0063] Please continue reading. Figures 2 to 4 In some embodiments, the sensing component 14 includes a sensing sheet 141 and a sensing switch 142. The sensing sheet 141 is disposed on the mounting portion 1312, and the sensing switch 142 is disposed on the transfer base 12. The sensing switch 142 is configured to trigger an alarm when the position of the sensing sheet 141 exceeds a preset position. Specifically, the sensing sheet 141 is a metal sheet, and when the sensing sheet 141 reaches the over-limit position, the sensing switch 142 can promptly sense the sensing sheet 141 and trigger an alarm.

[0064] In this embodiment, since a sensing plate 141 is provided on the portion of the guide member 131 extending out of the mounting cavity 121 (i.e., the mounting portion 1312), it can trigger the sensing switch 142 when the upward displacement of the transfer needle 11 exceeds a preset position. The sensing switch 142 can issue an alarm and trigger a process pause, thereby further reducing damage to the transfer needle 11 and preventing blockage of the transfer needle 11. Furthermore, based on the cooperation between the sensing plate 141 and the sensing switch 142, and with the sensing switch 142 located on the transfer base 12, the influence of the weight of the sensing switch 142 on the upward movement of the transfer needle 11 can be reduced during the upward movement of the transfer needle 11.

[0065] In other embodiments, the sensing component 14 includes a displacement sensor disposed on the mounting portion 1312 and used to sense whether the displacement of the transfer needle 11 under external pressure exceeds a preset threshold.

[0066] In this embodiment, since a displacement sensor is provided on the part of the guide 131 that extends out of the mounting cavity 121 (i.e., the mounting part 1312), the displacement sensor can move upward with the guide 131. When the displacement sensor senses that its own position change (i.e., the upward displacement of the transfer needle 11) exceeds a preset threshold, the controller can be triggered to perform an alarm and / or process pause, thereby further reducing the damage to the transfer needle 11 and avoiding blockage of the transfer needle 11.

[0067] Please see Figure 5 The transfer needle 11 has at least one notch 111 at one end of the buffer assembly 13 and the first through hole 122, and each notch 111 communicates with the internal cavity of the transfer needle 11.

[0068] Because the transfer needle 11 has a notch 111 at its end, when the transfer needle 11 is in complete contact with the bottom of the container or component containing the liquid (such as the bottom of the reagent slot A1 or sample slot A2 on the test card A), the inner cavity of the transfer needle 11 can still be connected with the surrounding liquid through the notch 111, so that the liquid in the container or component can be aspirated or expelled.

[0069] Figure 6 This is a perspective view of an adjustment drive mechanism provided in an embodiment of this application. Figure 7 A perspective view of another adjustment drive mechanism provided in an embodiment of this application. Figure 8 A perspective view of another adjustment drive mechanism provided in the embodiments of this application.

[0070] Please see Figure 6 , Figure 7 and Figure 8 Each adjustment drive mechanism 20 includes a first adjustment drive unit 21, a second adjustment drive unit 22, and a third adjustment drive unit 23.

[0071] The first adjustment drive unit 21 is connected to the liquid transfer unit 10 and is used to drive the liquid transfer unit 10 to move along the second direction L2. The second adjustment drive unit 22 is connected to the first adjustment drive unit 21 and is used to drive the liquid transfer unit 10 to move along the third direction L3. The third adjustment drive unit 23 is connected to the second adjustment drive unit 22 and is used to drive the third adjustment drive unit 23 to move along the first direction L1.

[0072] It should be noted that the first direction L1, the second direction L2, and the third direction L3 in this application are the three coordinate directions of the liquid transfer device, wherein the second direction L2 is parallel to the axial direction of the elastic member 132.

[0073] Therefore, in this embodiment, the position adjustment of the liquid transfer unit 10 in three coordinate directions is realized through the first adjustment drive unit 21, the second adjustment drive unit 22 and the third adjustment drive unit 23, which enables the liquid transfer unit 10 to accurately draw liquid from a certain position and release liquid to another position, thereby avoiding damage to the transfer needle 11 of the liquid transfer unit 10 due to improper position adjustment.

[0074] Specifically, if there is one liquid transfer unit 10, then there will be one first adjustment drive unit 21, one second adjustment drive unit 22, and one third adjustment drive unit 23, as follows: Figure 6 and Figure 7 As shown.

[0075] Of course, such as Figure 8 As shown, there can be multiple liquid transfer units 10, and each liquid transfer unit 10 is correspondingly arranged with a first adjustment drive unit 21, a second adjustment drive unit 22, and a third adjustment drive unit 23. The liquid transfer device also includes a mounting plate 30, on which multiple third adjustment drive units 23 are mounted. Each third adjustment drive unit 23 is connected to a corresponding second adjustment drive unit 22, each second adjustment drive unit 22 is connected to a corresponding first adjustment drive unit 21, and each first adjustment drive unit 21 is connected to a corresponding liquid transfer unit 10.

[0076] Please see Figure 6 and Figure 7 The first adjustment drive unit 21 includes a first connecting seat 211, a first guide rail 212, and a first drive mechanism 213. The first connecting seat 211 is connected to the liquid transfer unit 10 and slidably connected to the first guide rail 212, which extends along a second direction L2. The first drive mechanism 213 is connected to the first connecting seat 211 and is used to drive the first connecting seat 211 to move along the first guide rail 212.

[0077] In some embodiments, the first drive mechanism 213 may include only a drive motor, and the drive motor is a telescopic motor. The telescopic motor is connected to the first connecting seat 211 and can drive the first connecting seat 211 to telescopically move, so that the first connecting seat 211 reciprocates along the first guide rail 212. Figure 7 As shown.

[0078] In other embodiments, the first drive mechanism 213 may also include a first drive motor 2131 and a first belt 2132. The first belt 2132 is connected to the first connecting seat 211. The first drive motor 2131 is connected to the first belt 2132 and drives the first belt 2132 to rotate, so that the first belt 2132 drives the first connecting seat 211 to move linearly along the first guide rail 212. Figure 6 As shown.

[0079] In this embodiment, motion guidance is achieved through the first guide rail 212 and motion transmission is achieved through the first belt 2132, thereby ensuring that the liquid transfer unit 10 can move smoothly along a predetermined direction, thus improving the stability of the liquid transfer unit 10 during the movement process.

[0080] Please continue reading. Figure 6 and Figure 7 The second adjustment drive unit 22 includes a second connecting seat 221, a second guide rail 222, and a second drive mechanism 223. The second connecting seat 221 is connected to the first adjustment drive unit 21 and slidably connected to the second guide rail 222, which extends along a third direction L3. The second drive mechanism 223 is connected to the second connecting seat 221 and is used to drive the second connecting seat 221 to move along the second guide rail 222.

[0081] In some embodiments, the second drive mechanism 223 includes a second drive motor 2231 and a second belt 2232. The second belt 2232 is connected to the second connecting seat 221, and the second drive motor 2231 is connected to the second belt 2232 and drives the second belt 2232 to rotate, so that the second belt 2232 drives the second connecting seat 221 to move linearly along the second guide rail 222. Figure 6 As shown.

[0082] In other embodiments, the second drive mechanism 223 includes a second drive motor 2231, a lead screw 2233, and a lead screw sleeve 2234. The lead screw 2233 is connected to the second drive motor 2231, and the lead screw sleeve 2234 is fitted onto the lead screw 2233 and connected to the second connecting seat 221. Under the rotation of the lead screw 2233, the lead screw sleeve 2234 drives the second connecting seat 221 to move linearly along the second guide rail 222. Figure 7 As shown.

[0083] In this embodiment, motion transmission is achieved through the cooperation of lead screw 2233 and lead screw sleeve 2234, which ensures that the liquid transfer unit 10 can move smoothly along a predetermined direction, thereby improving the stability of the liquid transfer unit 10 during the movement process.

[0084] Please continue reading. Figure 6 and Figure 7The third adjustment drive unit 23 includes a third belt 231, a third connecting seat 232, a third guide rail 233, and a third drive motor 234. The third belt 231 is connected to the third connecting seat 232, which is connected to the second drive mechanism 223 and slidably connected to the third guide rail 233. The third guide rail 233 extends along a first direction L1. The third drive motor 234 drives the third belt 231 to rotate, so that the third belt 231 drives the third connecting seat 232 to move linearly along the third guide rail 233.

[0085] Figure 9 This is an overall perspective view of the automated testing equipment provided in the embodiments of this application. Figure 10 A perspective view of the test card provided in an embodiment of this application.

[0086] Please see Figure 9 and Figure 10 The automated testing equipment of this application includes a card compartment module 100, a test card transfer module 200, a puncture scanning module 300, a sample addition module 400, a pipetting module 500, and an analysis module 60.

[0087] The card compartment module 100 can be used to store different types of test cards A, and the card compartment module 100 can also push the test cards A sequentially to the test card transfer module 200. The test card transfer module 200 is used to push the test cards A on it to the positions corresponding to the sample loading module 400 and the analysis module 600.

[0088] The test card transfer module 200 is used to transfer test card A between the puncture scanning module 300, the sample addition module 400, the pipetting module 500, and the analysis module 600.

[0089] The puncture scanning module 300 is used to scan test card A and / or puncture the encapsulation film on test card A to expose the reagent slot A1 on test card A. It should be noted that when test card A has barcode information but its reagent slot A1 does not have an encapsulation film, the puncture scanning module 300 does not need to perform a puncture action; it only needs to scan the barcode information on test card A. Conversely, when test card A does not have barcode information but its reagent slot A1 has an encapsulation film, the puncture scanning module 300 does not need to scan the barcode information on test card A; it only needs to puncture the encapsulation film.

[0090] The sample addition module 400 is used to add the sample to be tested into the reagent slot A1 on the test card A, and the pipetting module 500 is used to mix the sample to be tested with the test reagent in the reagent slot A1 and transfer it to the sample slot A2 on the test card A. At least one of the sample addition module 400 and the pipetting module 500 employs the liquid transfer device described above.

[0091] The analysis module 600 is used to acquire and analyze the sample image in the sample slot A2 on the test card A to obtain the detection result of the sample to be tested.

[0092] In this embodiment, the card compartment module 100 serves as a module providing various types of test cards A. It can push the corresponding test card A to the test card transfer module 200. After receiving the test card A pushed by the card compartment module 100, the test card transfer module 200 can transfer the test card A between the puncture scanning module 300, the sample addition module 400, the pipetting module 500, and the analysis module 600. This allows each test card A to be scanned and / or punctured by the puncture scanning module 300, have a sample added to it by the sample addition module 400, and have the sample transferred from the reagent slot A1 to the sample slot A2 by the pipetting module 500. The analysis module 600 can automatically acquire and analyze the sample image in the sample slot A2 of each test card A to obtain the test result of the sample to be tested. This achieves full automation of the entire process of test card storage, location transfer, sample addition, mixed sample transfer, and result judgment. This fully automated testing process not only significantly saves manpower and enables continuous and rapid acquisition of test results for samples and different test cards, but also avoids the impact of human subjective misjudgment on testing accuracy, thereby greatly improving testing efficiency and accuracy. Furthermore, since at least one of the sample loading module 400 and the pipetting module 500 employs the liquid transfer device described above, it can effectively prevent damage or blockage of the transfer needle 11 from affecting testing accuracy during the sample loading and / or pipetting process.

[0093] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A liquid transfer unit (10) characterized by, The liquid transfer unit (10) comprises a transfer needle (11), a transfer base (12), a buffer assembly (13) and a transfer driving mechanism; The transfer base (12) is provided with a mounting cavity (121) and a first through hole (122) in communication with each other, and at least part of the buffer assembly (13) is arranged in the mounting cavity (121); One end of the transfer needle (11) is arranged in the buffer assembly (13) and the first through hole (122) and extends out of the transfer base (12), and the other end of the transfer needle (11) is connected with the transfer driving mechanism, and the transfer driving mechanism is used for driving the transfer needle (11) to suck and release the liquid to be transferred; At least part of the buffer assembly (13) can be deformed under the extrusion of the transfer needle (11) by external force.

2. The liquid transfer unit (10) according to claim 1, wherein The buffer assembly (13) comprises a guide member (131), an elastic member (132) and a limiting member (133); At least part of the guide member (131) is arranged in the mounting cavity (121) and is arranged for the transfer needle (11), and the transfer needle (11) is connected with the guide member (131); The limiting member (133) is arranged on the mounting cavity (121) and is connected with the transfer base (12), and the elastic member (132) is arranged between the guide member (131) and the limiting member (133) along the axial direction and is arranged for the transfer needle (11).

3. The liquid transfer unit (10) according to claim 2, characterized in that The liquid transfer unit further comprises a sensing assembly (14), and the sensing assembly (14) is arranged on the guide member (131) and is used for sensing the displacement of the transfer needle (11) under the extrusion of external force.

4. The liquid transfer unit (10) according to claim 3, wherein The transfer base (12) is further provided with an open slot (123) in communication with the mounting cavity (121); The guide member (131) comprises a barrel portion (1311) and a mounting portion (1312), the barrel portion (1311) is arranged in the mounting cavity (121) and is provided with a second through hole, the second through hole is arranged for the transfer needle (11), and the mounting portion (1312) protrudes from the barrel portion (1311) along the radial direction of the barrel portion (1311) and extends out of the mounting cavity (121) through the open slot (123); At least part of the sensing assembly (14) is arranged on the mounting portion (1312).

5. The liquid transfer unit (10) according to claim 4, wherein The sensing assembly (14) comprises a sensing sheet (141) and a sensing switch (142), the sensing sheet (141) is arranged on the mounting portion (1312), the sensing switch (142) is arranged on the transfer base (12), and the sensing switch (142) is arranged to alarm when the position of the sensing sheet (141) exceeds a preset position; or The sensing assembly (14) comprises a displacement sensor arranged on the mounting portion (1312) and configured to sense whether the displacement of the transfer needle (11) under the extrusion of external force exceeds a preset threshold.

6. The fluid transfer unit (10) of claim 1, wherein, The transfer needle (11) has at least one gap (111) at one end of the buffer assembly (13) and the first through hole (122), and each gap (111) is in communication with the internal cavity of the transfer needle (11).

7. A liquid transfer device characterized by, The liquid transfer device comprises at least one adjusting driving mechanism (20) and at least one liquid transfer unit (10) according to any one of claims 1-6, each adjusting driving mechanism (20) is connected with a corresponding liquid transfer unit (10) and is configured to adjust the position of the liquid transfer unit (10).

8. The liquid transfer device according to claim 7, wherein Each adjusting driving mechanism (20) comprises a first adjusting driving unit (21), a second adjusting driving unit (22) and a third adjusting driving unit (23). The first adjusting driving unit (21) is connected with the liquid transfer unit and configured to drive the liquid transfer unit to move in a second direction (L2), and the second direction (L2) is the axial direction of the buffer assembly (13). The second adjusting driving unit (22) is connected with the first adjusting driving unit (21) and configured to drive the liquid transfer unit to move in a third direction (L3), and the third adjusting driving unit (23) is connected with the second adjusting driving unit (22) and configured to drive the third adjusting driving unit (23) to move in a first direction (L1).

9. The liquid transfer device according to claim 8, wherein The liquid transfer units (10) are multiple in number, and each liquid transfer unit (10) is arranged in one-to-one correspondence with the first adjusting driving unit (21), the second adjusting driving unit (22) and the third adjusting driving unit (23). The liquid transfer device further comprises a mounting plate (30), and the multiple third adjusting driving units (23) are mounted on the same mounting plate (30), each third adjusting driving unit (23) is connected with a corresponding second adjusting driving unit (22), each second adjusting driving unit (22) is connected with a corresponding first adjusting driving unit (21), and each first adjusting driving unit (21) is connected with a corresponding liquid transfer unit (10).

10. The liquid transfer device according to claim 9, wherein The first adjusting driving unit (21) comprises a first connecting seat (211), a first guide rail (212) and a first driving mechanism (213), the first connecting seat (211) is connected with the liquid transfer unit (10) and is in sliding connection with the first guide rail (212), the first guide rail (212) extends along the second direction (L2), the first driving mechanism (213) is connected with the first connecting seat (211) and is used for driving the first connecting seat (211) to move along the first guide rail (212); and / or The second adjusting driving unit (22) comprises a second connecting seat (221), a second guide rail (222) and a second driving mechanism (223), the second connecting seat (221) is connected with the first adjusting driving unit (21) and is in sliding connection with the second guide rail (222), the second guide rail (222) extends along the third direction (L3), the second driving mechanism (223) is connected with the second connecting seat (221) and is used for driving the second connecting seat (221) to move along the second guide rail (222); The third adjusting driving unit (23) comprises a third belt (231), a third connecting seat (232), a third guide rail (233) and a third driving motor (234), the third belt (231) is connected with the third connecting seat (232), the third connecting seat (232) is connected with the second adjusting driving unit (22) and is in sliding connection with the third guide rail (233), the third guide rail (233) extends along the first direction (L1), and the third driving motor (234) is used for driving the third belt (231) to rotate, so that the third belt (231) drives the third connecting seat (232) to move along the third guide rail (233).

11. An automated inspection apparatus, characterized by, The card loading module (100), the test card flow transfer module (200), the piercing and scanning module (300), the sample adding module (400), the pipetting module (500) and the analysis module (600) are included. The card loading module (100) is used for placing a test card (A) and pushing the test card (A) to the test card flow transfer module (200); The test card flow transfer module (200) is used for transferring the test card (A) between the piercing and scanning module (300), the sample adding module (400), the pipetting module (500) and the analysis module (600); The sample adding module (400) is used for adding a sample to be detected into a reagent groove (A1) on the test card (A); The pipetting module (500) is used for mixing the sample to be detected with a test reagent in the reagent groove (A1) and transferring the mixture to a sample groove (A2) on the test card (A); The analysis module (600) is used for acquiring a sample image in the sample groove (A2) and performing analysis to obtain a detection result of the sample to be detected. At least one of the sample adding module (400) and the pipetting module (500) adopts the liquid transfer device in any one of claims 7-10.

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