CN214585493U - Chip carrier and micro-fluidic biochemical analyzer - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, specifically disclose a chip carrier and micro-fluidic biochemical analyzer, this chip carrier is including carrying dish and a plurality of fixed subassembly, carries the dish and has evenly arranged a plurality of installation positions along the circumferencial direction, and each installation position homoenergetic can be used for installing test chip, and a plurality of fixed subassemblies set up with a plurality of installation position one-to-ones, and fixed subassembly sets up in carrying the dish, and fixed subassembly can be fixed in test chip and carry the dish. Can fix a plurality of test chip at a plurality of installation positions of carrying the dish through a plurality of fixed subassemblies, when the dish rotates is carried in the rotary drive device drive, can detect a plurality of test chip simultaneously, detection efficiency is higher.

Description

Chip carrier and micro-fluidic biochemical analyzer

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a chip carrier and micro-fluidic biochemical analysis appearance.

Background

Biochemical analysis is one of the important means commonly used in clinical diagnosis, and various biochemical indexes are determined by analyzing blood or other body fluids. Microfluidics refers to the technology of processing or manipulating tiny fluids using microchannels, involving chemical, fluid physics, microelectronics, new materials, biology, biomedical engineering, and the like. Because of the miniaturization, integration, and other features, microfluidic devices are often referred to as microfluidic chips. Biochemical analyzers, also commonly referred to as biochemics, are instruments that use the principle of optoelectric colorimetry to measure a particular chemical component in a body fluid. Because of its fast measuring speed, high accuracy and small reagent consumption, it is widely used in hospitals, epidemic prevention stations and family planning service stations.

In the portable full-automatic biochemical analysis device disclosed in the prior art, a chip is driven by a bin inlet and outlet frame to enter a shell, the chip is fixed by a locking device, and then the locking device is driven by a motor to rotate so as to drive the chip to rotate. In this scheme, the motor can only drive a chip simultaneously and rotate to the shape of chip only is fit for setting up to discoid, and this application scope that has just restricted the chip, and can't carry out synchronous test to a plurality of chips simultaneously, leads to efficiency of software testing lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a chip carrier and micro-fluidic biochemical analysis appearance to solve the portable full-automatic biochemical analysis device in the correlation technique and only can measure a chip simultaneously, problem that efficiency of software testing is low.

In one aspect, the utility model provides a chip carrier, this chip carrier includes:

the test device comprises a carrying disc, a test chip and a test chip, wherein a plurality of mounting positions are uniformly arranged on the carrying disc along the circumferential direction, and each mounting position can be used for mounting the test chip;

the test chip comprises a plurality of mounting positions, a plurality of fixing assemblies, a plurality of mounting positions and a plurality of fixing assemblies, wherein the fixing assemblies and the mounting positions are arranged in a one-to-one correspondence mode, the fixing assemblies are arranged on a carrying disc, and the fixing assemblies can fix the test chip on the carrying disc.

As the preferred technical scheme of chip carrier, fixed subassembly including float set up in carry the button of dish, the button has the pothook, be equipped with the fixed slot on the test chip, work as the button with when testing the chip joint, the pothook joint in the fixed slot.

As the preferred technical scheme of chip carrier, fixed subassembly still includes first elastic component, the button have with the joint position of test chip joint and with the isolated position of test chip separation, first elastic component can drive the button by the isolated position to the joint position removes.

As a preferred technical solution of the chip carrier, the chip carrier further includes a cover plate, the cover plate is fixed to the carrying tray, and the test chip is clamped between the cover plate and the carrying tray.

As a preferred technical solution of the chip carrier, a jack is provided on the key, the first elastic member is a first pressure spring, one end of the first pressure spring is inserted into the jack, and the other end of the first pressure spring abuts against the cover plate.

As a preferred technical solution of the chip carrier, the test chip is provided with a slide rail, the carrying disc is provided with a slide groove corresponding to each mounting position, the slide rail is slidably located in the slide groove, the test chip can slide relative to the carrying disc and has a pre-installation position and a loading position, and when the test chip is located at the loading position, the key is clamped with the test chip.

As a preferred technical solution of the chip carrier, the chip carrier further comprises a plurality of push rod assemblies, at least one push rod assembly is arranged corresponding to each mounting position, and each push rod assembly comprises a push rod and a second elastic piece;

when the test chip is located at the loading position, the key is clamped with the test chip, and the second elastic piece can drive the push rod to tightly abut against the test chip, so that the push rod always has a tendency of driving the test chip to move from the loading position to the pre-installation position.

As a preferred technical solution of the chip carrier, the push rod includes an inserting portion, a sliding portion and a head portion, which are connected in sequence, the head portion is used for abutting against the test chip, the sliding portion is in sliding fit with the carrying disc, the second elastic member is a second pressure spring, the inserting portion is sleeved with the second pressure spring, and the second pressure spring abuts against the sliding portion and the carrying disc respectively.

As the preferred technical scheme of chip carrier, be provided with first spacing face on the chip carrier, be provided with the spacing face of second on the year dish, when test chip was located the loading position, first spacing face with the butt of the spacing face of second to prevent test chip crosses the loading position.

On the other hand, the utility model provides a micro-fluidic biochemical analyzer, including in arbitrary above-mentioned scheme the chip carrier.

The utility model has the advantages that:

the utility model provides a chip carrier and micro-fluidic biochemical analysis appearance, this chip carrier have evenly arranged a plurality of installation positions along the circumferencial direction including carrying dish and a plurality of fixed subassembly, carry the dish, and each installation position homoenergetic can be used for installing the test chip, and a plurality of fixed subassemblies set up with a plurality of installation position one-to-ones, and fixed subassembly sets up in carrying the dish, and fixed subassembly can be fixed in with the test chip and carry the dish. Can fix a plurality of test chip at a plurality of installation positions of carrying the dish through a plurality of fixed subassemblies, when the dish rotates is carried in the rotary drive device drive, can detect a plurality of test chip simultaneously, detection efficiency is higher.

Drawings

FIG. 1 is an exploded view of a microfluidic biochemical analyzer according to an embodiment of the present invention;

FIG. 2 is an exploded view of a part of the structure of the micro-fluidic biochemical analyzer according to the embodiment of the present invention;

fig. 3 is a first cross-sectional view of the microfluidic biochemical analyzer (with the compressing member in the unlocked position) according to an embodiment of the present invention;

fig. 4 is a second cross-sectional view of the microfluidic biochemical analyzer according to an embodiment of the present invention (the pressing member is in the locking position, and the top shaft abuts against the suction block);

fig. 5 is a third cross-sectional view of the microfluidic biochemical analyzer according to the embodiment of the present invention (the pressing member is in the locking position, and the top shaft is separated from the pressing plate);

fig. 6 is a cross-sectional view of a pressing device in an embodiment of the present invention;

FIG. 7 is an exploded view of a hold-down device in an embodiment of the invention;

FIG. 8 is an exploded view of a rotary drive assembly according to an embodiment of the present invention;

fig. 9 is a cross-sectional view of a rotary drive and a tray in an embodiment of the invention;

FIG. 10 is an exploded view of a chip carrier according to an embodiment of the present invention;

fig. 11 is a first cross-sectional view of a chip carrier according to an embodiment of the present invention;

fig. 12 is a second cross-sectional view of the chip carrier according to the embodiment of the present invention;

fig. 13 is an exploded view of a chip carrier according to an embodiment of the present invention;

FIG. 14 is a schematic structural view of a boat in an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a key in an embodiment of the present invention;

fig. 16 is a schematic structural view of a push rod in an embodiment of the present invention;

FIG. 17 is an exploded view of a test chip according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a test chip according to an embodiment of the present invention.

In the figure:

1. a warehouse in and out device; 11. a main body support; 111. a test bin; 12. a tray; 121. a first plate; 122. a second plate; 123. a third plate; 124. a channel groove; 125. fixing the round hole; 126. a stopper; 127. a first detection hole; 128. a second detection hole; 13. a gear; 14. a rack; 15. a warehouse in and out motor; 16. a motor fixing plate; 17. a first photosensor; 18. a second photosensor;

2. a rotation driving device; 21. a main motor; 22. a turntable; 221. a guide slope; 222. a first groove; 223. a second groove; 224. a convex column; 225. positioning holes; 226. a conical surface; 23. a magnetic member; 24. mounting a plate; 25. a second non-slip mat; 26. an encoder;

3. a chip carrier; 31. a carrying tray; 311. a fixing hole; 312. a first guide surface; 313. avoiding vacant positions; 314. a key hole; 315. a push rod groove; 316. a chute; 317. a second limiting surface; 32. a cover plate; 33. pressing a key; 331. a key guide surface; 332. a jack; 34. a first elastic member; 35. a push rod; 351. a sliding part; 352. a plug-in part; 353. a head portion; 36. a second elastic member;

4. a locking device; 41. a locking member; 411. sucking blocks; 412. a platen; 413. a first mating hole; 414. a second mating hole; 415. a first mating surface; 416. a compression surface; 417. inserting a column; 42. a drive member; 421. a motion shaft; 43. a top shaft; 431. a second mating surface; 44. locking the bracket; 45. a first sensor; 46. an induction sheet; 47. a second sensor; 48. a first non-slip mat;

5. testing the chip; 51. a chip body; 511. fixing grooves; 512. a baffle plate; 513. a slide rail; 514. a first limiting surface; 515. a sample application channel; 5151. a sample adding slot; 5152. a sample application cavity; 5153. capillary pores; 5154. a waste fluid chamber; 516. a detection chamber; 52. reagent tablets; 53. an upper sealing film; 531. a sample application hole; 54. a lower sealing film; 541. a detection hole; 542. an exhaust hole; 55. an identification code;

61. a first light source module; 62. a second light source module; 63. a code scanner;

71. an upper heating body; 72. a lower heating body; 73. a temperature sensor.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 to 18, the present embodiment provides a microfluidic biochemical analyzer, which includes a rotation driving device 2 and a locking device 4 for locking a chip carrier 3 and testing a test chip 5 on the chip carrier 3. The rotation driving device 2 includes a main motor 21, a turntable 22 in transmission connection with the main motor 21, and a magnetic member 23 disposed on the turntable 22. The chip carrier 3 is provided with a fixing hole 311, at least one test chip 5 is arranged on the chip carrier 3, and the chip carrier 3 is supported on the turntable 22; the locking device 4 comprises a locking member 41, the locking member 41 can be inserted into the fixing hole 311 and magnetically attracted with the magnetic member 23, and the locking member 41 can press the chip carrier 3 against the turntable 22. It will be appreciated that retaining member 41 includes at least one component that is magnetic or can be magnetically attracted. In the microfluidic biochemical analyzer provided by this embodiment, the locking member 41 is magnetically attracted to the magnetic member 23 disposed on the turntable 22 to fix the chip carrier 3 on the turntable 22, so that the locking structure is simple and the cost is low.

Specifically, the microfluidic biochemical analyzer further comprises an inlet and outlet device 1 and a detection assembly. The warehouse-in and warehouse-out device 1 comprises a main body support 11 and a tray 12, wherein the main body support 11 is provided with a test warehouse 111, the tray 12 is movably arranged on the main body support 11, and the tray 12 can slide relative to the main body support 11 and is provided with a test position and a sample adding position. Specifically, the main motor 21 is disposed on the main body support 11, the rotary table 22 is disposed on the moving path of the tray 12, the rotary table 22 is provided with a guiding inclined plane 221, the chip carrier 3 includes a carrier plate 31 having a fixing hole 311, at least one test chip 5 is disposed on the carrier plate 31, and when the tray 12 is located at the sample loading position, the carrier plate 31 is supported on the tray 12 and can move with the tray 12; in the process that the tray 12 is switched from the sample adding position to the testing position, the carrier plate 31 can abut against the guide inclined surface 221 and move along the guide inclined surface 221; when the tray 12 is located at the testing position, the carrier 31 is completely separated from the tray 12 and supported on the turntable 22, and the magnetic members 23 are opposite to the fixing holes 311. When the tray 12 is at the testing position, the locking member 41 can be inserted into the fixing hole 311 and magnetically attracted to the magnetic member 23, and the locking member 41 presses the carrier tray 31 against the turntable 22. The detection assembly comprises a first light source module 61, and the first light source module 61 is used for emitting detection light to the detection position of the test chip 5 and collecting the detection light reflected by the detection position. This micro-fluidic biochemical analyzer adopts test chip 5 to detect the body fluid, and the body fluid can directly be loaded in test chip 5, need not to set up application of sample system and cleaning system alone, and simple structure, the cost is lower, can effectively save the space and occupy and convenient to carry. When the carrier 31 carried by the tray 12 moves from the sample loading position to the testing position, the guiding slope 221 disposed on the turntable 22 guides one end of the carrier 31 to be lifted from the tray 12 and move along the guiding slope 221, the carrier 31 is finally separated from the tray 12 as a whole along with the movement of the tray 12 and moves to the turntable 22, then the carrier 31 can be fixed on the turntable 22 by the locking member 41, and the main motor 21 can drive the turntable 22 to drive the carrier 31 to rotate, so as to test the testing chip 5. The micro-fluidic biochemical analyzer transfers the carrier disc 31 from the tray 12 to the rotary disc 22 through a mechanical structure, has a simple structure, is beneficial to further reducing the cost, and is beneficial to further reducing the whole volume. It will be appreciated that during the transfer of the boat 31 from the tray 12 to the carousel 22, the boat 31 is raised to a set height, which may be set as desired.

Optionally, referring to fig. 1 and fig. 2, the tray 12 includes a U-shaped channel 124, the channel 124 is surrounded by a first plate 121, a second plate 122 and a third plate 123, wherein the first plate 121 and the second plate 122 are disposed in parallel and at an interval, the third plate 123 is connected between the first plate 121 and the second plate 122, and the channel 124 extends along the moving direction of the tray 12. In this embodiment, the lower surface of the third plate 123 is higher than the upper surface of the rotary disc 22, and the rotary disc 22 will be located below the channel groove 124 during the process of moving the tray 12 from the loading position to the testing position. The third plate 123 is provided with a fixing circular hole 125, the diameter of the fixing circular hole 125 is greater than the width of the third plate 123, and the fixing circular hole 125 is arranged in the middle along the width direction of the third plate 123, so that the carrier disc 31 can be placed in the fixing circular hole 125 and then supported on the first plate 121 and the second plate 122, at this time, the lower surface of the carrier disc 31 is lower than the height of the upper edge of the guide inclined plane 221 and higher than the height of the lower surface of the third plate 123, so that when the carrier disc 31 is driven by the tray 12 to move, the carrier disc 31 can abut against the guide inclined plane 221 and be separated from the tray 12 under the guide of the guide inclined plane 221.

Optionally, referring to fig. 1 and fig. 2, the device 1 further includes a first stopping member and a second stopping member, one of the first stopping member and the second stopping member is disposed on the main body bracket 11, and the other of the first stopping member and the second stopping member is disposed on the tray 12, when the tray 12 is located at the sample loading position, the tray is located outside the testing chamber 111, and the first stopping member and the second stopping member are separated; the first and second stops cooperate to prevent the tray 12 from passing beyond the testing position when the tray 12 is in the testing position. In this way, the first stop member and the second stop member can ensure that the tray 12 is accurately stopped at the testing position. In this embodiment, the first stop member is a first photoelectric sensor 17, the second stop member is a first detection hole 127, when the tray 12 is located at the test position, the first photoelectric sensor 17 is matched with the first detection hole 127, and when the tray 12 is separated from the test position, the first photoelectric sensor 17 is separated from the first detection hole 127. Specifically, the first detection hole 127 may be disposed on the first plate 121 or the second plate 122, in this embodiment, the first detection hole 127 is disposed on the first plate 121, the first photosensor 17 is fixed on the main body bracket 11, the first photosensor 17 includes an integrally disposed light emitting end and a light receiving end, when the tray 12 is located at the test position, the first detection hole 127 can just move to a position opposite to the first photosensor 17, at this time, light emitted from the light emitting end of the first photosensor 17 can penetrate through the first detection hole 127, so that the light receiving end of the first photosensor 17 cannot receive reflected light, and the first photosensor 17 emits a high level (or a low level) indicating that the tray 12 is located at the test position at this time; when the tray 12 is out of the testing position, the light emitted from the light emitting end of the first photosensor 17 is reflected by the first plate 121 and received by the light receiving end of the first photosensor 17, and the first photosensor 17 emits a low level (or a high level) indicating that the tray 12 is out of the testing position. When the first photoelectric sensor 17 is matched with the first detection hole 127, the controller collects a signal of the first photoelectric sensor 17 and controls the in-out motor 15 to stop working so as to stop the tray 12 at the test position. In other embodiments, the first and second stop members may also be two flat surfaces of the main body bracket 11 and the tray 12 that can abut against each other.

Optionally, referring to fig. 1 and fig. 2, in order to ensure that the tray 12 can be effectively limited to the carrier plate 31, a plurality of stoppers 126 are disposed on each of the first plate 121 and the second plate 122, the stoppers 126 extend along the circumferential direction of the fixing circular holes 125, and the stoppers 126 can abut against the test chips 5 fixed on the carrier plate 31.

Optionally, referring to fig. 1 and fig. 2, the in-out device 1 further includes a driving component, and the driving component drives the tray 12 to switch between the sample loading position and the testing position. In this embodiment, the driving assembly includes a rack 14 disposed on the tray 12, a gear 13 engaged with the rack 14, and a motor 15 connected to the gear 13 for driving the tray 12 to slide on the main body support 11. The arrangement is such that the tray 12 can be driven by the in-out motor 15 to automatically enter and exit the test chamber 111. Specifically, the in-out motor 15 is fixed to the main body bracket 11 through the motor fixing plate 16, the gear 13 is located in the test chamber 111, and the rack 14 is fixed to the first plate 121 or the second plate 122, which is beneficial to reducing the space occupation. In other embodiments, the driving assembly may also be configured as a driving motor and belt transmission assembly, or as a pneumatic cylinder, etc.

Optionally, referring to fig. 1 and fig. 2, the device for taking in and out of a cartridge 1 further includes a third stopping member and a fourth stopping member, and when the tray 12 is located at the sample loading position, the third stopping member and the fourth stopping member are matched; when the tray 12 is in the test position, the third and fourth stops are separated. In this embodiment, the third stopping member is a second photoelectric sensor 18, the fourth stopping member is a second detection hole 128, when the tray 12 is located at the sample-adding position, the second photoelectric sensor 18 is matched with the second detection hole 128, and when the tray 12 is separated from the sample-adding position, the second photoelectric sensor 18 is separated from the second detection hole 128. Through the cooperation of the second photoelectric sensor 18 and the second detection hole 128, the tray 12 can be prevented from exceeding the sample-adding position when moving from the testing position to the sample-adding position. Specifically, in the present embodiment, the second detection hole 128 is provided on the first plate 121, and the second photosensor 18 is fixed to the main body frame 11. The working principle of the second photoelectric sensor 18 and the second detection hole 128 is the same as that of the first photoelectric sensor 17 and the first detection hole 127, and the description thereof is omitted. In other embodiments, the third and fourth stops may also be two flat surfaces that can abut against each other on the main body bracket 11 and the tray 12.

Optionally, referring to fig. 1 and fig. 2, the microfluidic biochemical analyzer further includes a heating device for heating the test chamber 111. Specifically, the heating device includes an upper heating body 71, and the upper heating body 71 is connected to the main body support 11 and can seal the test chamber 111 of the main body support 11. Preferably, the heating device further comprises a lower heating body 72, and the lower heating body 72 is disposed in the test chamber 111 and fixed to the main body support 11. When the tray 12 is located at the test position, the boat 31 is located between the upper heating body 71 and the lower heating body 72, and the test chip 5 can be heated by the upper heating body 71 and the lower heating body 72. It is further preferred that the heating device further comprises a temperature sensor 73, and the temperature sensor 73 is used for detecting the temperature in the test chamber 111 to prevent the heating temperature from being too high. Further preferably, two temperature sensors 73 are arranged, the two temperature sensors 73 are respectively used for detecting the temperatures of the upper heating body 71 and the lower heating body 72, the upper heating body 71 and the lower heating body 72 are electrified for heating, the real-time temperatures of the two heating bodies are detected by the two temperature sensors 73, when the required temperature is reached, the heating of the upper heating body 71 and the heating of the lower heating body 72 are stopped, if the temperature is reduced, the upper heating body 71 and the lower heating body 72 are electrified for heating, and the process is circulated so as to ensure that the temperature in the test bin 111 always keeps the required test temperature, so that the influence of the ambient temperature on the test process and the test result is eliminated.

Optionally, referring to fig. 3 to 7, the locking device 4 further includes an actuating member 42, the locking member 41 has a locking position magnetically attracted to the magnetic member 23 and an unlocking position separated from the magnetic member 23, the actuating member 42 can be selectively connected to the locking member 41, and the actuating member 42 can drive the locking member 41 to move between the unlocking position and the locking position, when the tray 12 is located at the testing position and the locking member 41 is located at the locking position, the locking member 41 can be inserted into the fixing hole 311 and magnetically attracted to the magnetic member 23 and the locking member 41 can press the carrier tray 31 against the turntable 22. So set up, when tray 12 is located the test position, drive the magnetic attraction of retaining member 41 and magnetic part 23 through driving piece 42 to with carry dish 31 and carousel 22 fixed together, then make driving piece 42 and retaining member 41 disconnection, can drive the rotation of carrying dish 31 through main motor 21, in order to detect test chip 5. When unlocking is needed, the locking piece 41 can be connected through the driving piece 42, the locking piece 41 is driven to be separated from the magnetic piece 23 through the driving piece 42, and after the locking piece 41 leaves the fixing hole 311, unlocking of the rotary disc 22 and the carrying disc 31 can be achieved. In other embodiments, the driving member 42 may not be required, and the locking member 41 may be manually installed by a human to couple the locking member 41 and the magnetic member 23. In this embodiment, the magnetic member 23 may be a magnet or an electromagnet.

Alternatively, referring to fig. 3 to 7, the locking member 41 includes a pressing plate 412 and a suction block 411 disposed on the pressing plate 412, and the pressing plate 412 and the turntable 22 are respectively disposed on two sides of the chip carrier 3. When the tray 12 is located at the testing position and the locking member 41 is located at the locking position, the attraction block 411 is inserted into the fixing hole 311 and magnetically attracted with the magnetic member 23, and the pressure plate 412 presses the carrier plate 31 to the turntable 22; the driving member 42 includes the moving shaft 421 and sets up in the apical axis 43 of moving shaft 421 tip, the pressure disk 412 has the mating holes, the mating holes includes first mating holes 413 and the second mating holes 414 of intercommunication, apical axis 43 pegs graft in the mating holes, and when apical axis 43 is located first mating holes 413, under the effect of the self gravity of pressure disk 412, pressure disk 412 and apical axis 43 along vertical direction butt, the driving member 42 can drive retaining member 41 and move between unblock position and latched position, when apical axis 43 is located second mating holes 414, pressure disk 412 separates with apical axis 43. Specifically, the locking device 4 is located above the main body support 11, the rotary driving device 2 is located below the main body support 11, the first fitting hole 413 is located above the second fitting hole 414, under the action of the self-gravity of the pressure plate 412 and the suction block 411, the top shaft 43 is located in the first fitting hole 413, and the pressure plate 412 and the top shaft 43 abut in the vertical direction, so that the driving member 42 can drive the pressure plate 412 and the suction block 411 to move through the top shaft 43, when the driving member 42 drives the suction block 411 to be inserted into the fixing hole 311 and the suction block 411 and the magnetic member 23 are attracted, under the action of the magnetic attraction force of the suction block 411 and the magnetic member 23, the pressure plate 412 is pressed against the upper end surface of the carrier plate 31 to fix the carrier plate 31 on the rotating plate 22, when the driving member 42 continues to move downwards, the top shaft 43 is located in the second fitting hole 414, at this time, the driving member 42 is separated from the magnetic member 412, so that the main motor 21 drives the rotating plate 22 to drive the carrier plate 31 to rotate, the suction block 411 and the pressure plate 412 can be rotated in synchronization therewith without interference of the top shaft 43. In other embodiments, the top shaft 43 may be replaced by an electromagnet, suction cup, or pneumatic gripper, etc., and the selective connection of the driving member 42 to the locking member 41 may be achieved as well.

It should be noted that in the present embodiment, the shape of the second fitting hole 414 is similar to the shape of the first fitting hole 413, and the shapes of the first fitting hole 413 and the second fitting hole 414 are similar to the outer contour of the top shaft 43. The size of the first fitting hole 413 is matched with that of the top shaft 43, the top shaft 43 can slide in the first fitting hole 413, and the top shaft 43 and the pressure plate 412 are coaxial in the process of releasing the locking of the load disk 31, so that the pressure plate 412 and the moving shaft 421 are coaxial, and the pressure plate 412 is prevented from swinging freely. The second engagement hole 414 is in clearance fit with the top shaft 43 to ensure that the top shaft 43 is disengaged from the pressure plate 412 when the top shaft 43 is located in the second engagement hole 414. The inner wall of the first fitting hole 413 has a first fitting surface 415, the top shaft 43 has a second fitting surface 431, and the first fitting surface 415 and the second fitting surface 431 can abut against each other in the vertical direction, so that the top shaft 43 and the pressure plate 412 can be connected under the weight of the pressure plate 412 and the suction block 411. The driver 42 may be an electric push rod, and in other embodiments, the driver 42 may instead be an air cylinder.

Optionally, referring to fig. 3 to 7, the suction block 411 is inserted into the second matching hole 414, and the suction block 411 has a pressing surface 416 located in the second matching hole 414, in order to ensure that the locking member 41 is stably located at the locking position, when the tray 12 is located at the testing position, after the driving member 42 drives the suction block 411 to be inserted into the fixing hole 311, the driving member 42 drives the top shaft 43 to continue to move downward until the top shaft 43 abuts against the pressing surface 416, and then the driving member 42 drives the top shaft 43 to be separated from the pressing surface 416 and located in the second matching hole 414, and the top shaft 43 abuts against the suction block 411, so as to ensure that the position of the suction block 411 is accurate. In this embodiment, the actuating member 42 further includes a locking bracket 44, the locking bracket 44 is configured to be fixedly connected to the main body bracket 11, and the locking bracket 44 is configured to support the actuating member 42.

Optionally, referring to fig. 1 and fig. 2, the locking device 4 further includes a first sensor 45, a sensing piece 46 is fixed on the moving shaft 421, the sensing piece 46 can be engaged with or separated from the first sensor 45 during the extension and contraction of the moving shaft 421, when the first sensor 45 is engaged with the moving shaft 421, the top shaft 43 abuts against the pressing surface 416, and the locking member 41 is located at the locking position, which indicates that the attraction block 411 has been stably attracted to the magnetic member 23.

Optionally, referring to fig. 1 and 2, the locking device 4 further includes a second sensor 47, the sensing piece 46 can be engaged with or disengaged from the second sensor 47 during the process of extending and retracting the moving shaft 421, when the second sensor 47 is engaged with the moving shaft 421, the locking member 41 is located outside the fixing hole 311, and the locking member 41 is located at the unlocking position, which indicates that the boat 31 has been completely unlocked.

Alternatively, referring to fig. 3 to 4 and fig. 12, in order to ensure that the suction block 411 is smoothly inserted into the fixing hole 311, the upper edge of the fixing hole 311 is provided with a first guide surface 312, and the first guide surface 312 is in a bell shape and is used for guiding the suction block 411 to be inserted into the fixing hole 311.

Optionally, referring to fig. 7, in order to ensure the pressing effect on the carrier plate 31, the locking device 4 further includes a first anti-slip pad 48, the first anti-slip pad 48 is sleeved on the suction block 411 and abuts against the lower end surface of the pressure plate 412, and the pressure plate 412 can press the first anti-slip pad 48 against the upper end surface of the chip carrier 3, so as to ensure that when the main motor 21 rotates, a sufficient friction force can be provided to the chip carrier 3 through the pressure plate 412 to pull the chip carrier 3 to rotate synchronously, thereby preventing the chip carrier 3 and the pressure plate 412 from moving relatively.

Alternatively, referring to fig. 8 and 9, the rotation driving device 2 further includes a mounting plate 24, the main motor 21 is mounted to the mounting plate 24, and the mounting plate 24 is mounted to the main body support 11. Preferably, the rotation driving device 2 further includes a second anti-skid pad 25, the top surface of the rotation plate 22 is provided with a first groove 222, the second anti-skid pad 25 is embedded in the first groove 222, and when the tray 12 is located at the testing position, the carrying tray 31 is supported on the second anti-skid pad 25, when the locking member 41 is located at the locking position, under the action of the attraction blocks 411 and the magnetic members 23, the pressing plate 412 presses the carrying tray 31 against the second anti-skid pad 25, so that when the rotation plate 22 rotates, sufficient friction force can be given to the carrying tray 31 by the second anti-skid pad 25 to ensure that the carrying tray 31 rotates synchronously with the rotation plate 22. In this embodiment, the first light source module 61 is mounted on the mounting plate 24.

Optionally, referring to fig. 8, a second groove 223 communicated with the first groove 222 is further disposed on the turntable 22, and the magnetic member 23 is embedded in the second groove 223. Preferably, the magnetic member 23 is annular, the second groove 223 is an annular groove, a protruding pillar 224 is convexly disposed on the bottom wall of the second groove 223, the second anti-slip pad 25 can be sleeved on the protruding pillar 224, a positioning hole 225 is disposed on the protruding pillar 224, and a center line of the positioning hole 225 coincides with a center line of the turntable 22. The suction block 411 is provided with a plug-in column 417, and when the locking member 41 is located at the locking position, the plug-in column 417 is plugged into the positioning hole 225, so as to ensure that the plug-in column 417 and the rotary disc 22 are coaxial. Preferably, the opening end of the positioning hole 225 is provided with a tapered surface 226, the tapered surface 226 is in a bell mouth shape, and the inner diameter of the tapered surface 226 gradually decreases along the direction that the insertion column 417 is inserted into the positioning hole 225, so as to guide the insertion column 417 of the suction block 411 to be inserted into the positioning hole 225, so as to ensure that the insertion column 417 and the positioning hole 225 can be smoothly inserted.

Optionally, referring to fig. 2 to 4 and fig. 13, the carrier disc 31 is provided with a plurality of mounting locations at intervals, at least one mounting location is provided with the test chip 5, the plurality of mounting locations are uniformly distributed in the circumferential direction of the carrier disc 31, and an avoidance space 313 is provided between two adjacent mounting locations; the detection assembly further comprises a second light source module 62, the second light source module 62 and the first light source module 61 are oppositely arranged on two sides of the in-out device 1, and the second light source module 62 is used for collecting detection light emitted by the first light source module 61; when the tray 12 is located at the testing position and the locking member 41 is located at the locking position, the carrying tray 31 rotates to drive the detection position and the clearance position 313 of the testing chip 5 to pass between the first light source module 61 and the second light source module 62. Specifically, when the tray 12 is located at the testing position and the locking member 41 is located at the locking position, the microfluidic biochemical analyzer enters the testing state, the main motor 21 is started, and the rotating disc 31 is driven by the rotating disc 22 to rotate for a circle, at this time, when the clearance 313 passes through the first light source module 61, the light emitted by the first light source module 61 is received by the second light source module 62 through the clearance 313, and the signal value received by the second light source module 62 can be used as a white bottom. Preferably, the main motor 21 is further provided with an encoder 26, and when the second light source module 62 receives the detection light emitted by the first light source module 61, the encoder 26 records its position as an initial position. It should be noted that the first light source module 61 and the second light source module 62 are prior art, and the structure thereof is not described herein again.

The utility model discloses the scheme that is equipped with six installation positions on the year dish 31 has been given exemplarily, in other embodiments, also can set up the installation position on the year dish 31 as required into other figure, and this embodiment does not limit to this. In this embodiment, a maximum of six identical or different test chips 5 can be mounted on the carrier 31 for detection, and the detection efficiency is high. When the test chip 5 is mounted on the carrier disc 31, the test chip 5 exceeds the outer peripheral surface of the carrier disc 31, which helps to reduce the volume of the carrier disc 31, thereby facilitating the reduction of the overall volume of the microfluidic biochemical analyzer. The clearance hole 313 is located between two adjacent test chips 5.

Alternatively, referring to FIG. 17, the test chip 5 has an identification code 55, and the detecting assembly further includes a scanner 63, the scanner 63 being configured to scan the identification code 55 when the tray 12 is in the testing position and the retaining member 41 is in the locking position. The identification code 55 records data information of the test chips 5, when the microfluidic biochemical analyzer enters a test state, the main motor 21 is started, the carrier disc 31 is driven to rotate for a circle by the turntable 22, the data information of each test chip 5 can be identified by the code scanner 63, and the position of each test chip 5 can be recorded by matching with the encoder 26.

Alternatively, referring to fig. 17, the test chip 5 includes a chip main body 51, a reagent sheet 52, an upper sealing film 53 and a lower sealing film 54. The chip main body 51 is provided with a sample adding channel 515 and a detection cavity 516, the reagent sheet 52 is fixed in the detection cavity 516, the upper sealing film 53 and the lower sealing film 54 are respectively arranged on the upper surface and the lower surface of the chip main body 51 and seal the sample adding channel 515, the upper sealing film 53 is provided with a sample adding hole 531, the sample adding hole 531 is communicated with the sample adding channel 515, and the sample adding channel 515 is communicated with the detection cavity 516, so that body fluid is added from the sample adding hole 531, and the body fluid can flow into the detection cavity 516 through the sample adding channel 515 and can react with the reagent sheet 52. Specifically, the sample addition channel 515 includes a sample addition groove 5151 corresponding to the sample addition hole 531, a sample addition chamber 5152 communicating with the sample addition groove 5151, a capillary 5153 communicating with the sample addition chamber 5152, and a waste liquid chamber 5154 communicating with the sample addition chamber 5152. The capillary aperture 5153 is in communication with the detection chamber 516.

Referring to fig. 18, in the embodiment, the lower sealing film 54 further has a detection through hole 541, the detection through hole 541 corresponds to a detection position of the reagent sheet 52, when the tray 12 is located at the detection position and the locking member 41 is located at the locking position, the main motor 21 drives the carrier plate 31 to rotate, the detection through hole 541 can pass through the upper side of the first light source module 61, the light emitted by the first light source module 61 irradiates the detection through hole 541, the reagent sheet 52 absorbs a portion of the light and can reflect another portion of the light to be received by the first light source module 61, and various indexes and parameters of the sample-added body fluid can be analyzed based on the light signal received by the first light source module 61.

Optionally, referring to fig. 18, the lower sealing film 54 is further provided with a vent hole 542 to prevent the sample feeding channel 515 from being blocked.

Optionally, referring to fig. 10 to 13, the chip carrier 3 further includes a plurality of fixing elements, the fixing elements are disposed corresponding to the mounting positions one by one, the fixing elements are disposed on the carrying tray 31, and the fixing elements can fix the test chip 5 on the carrying tray 31. Can fix a plurality of test chip 5 at a plurality of installation positions of carrying dish 31 through a plurality of fixed subassemblies, when rotary drive device 2 drive carried dish 31 and rotates, can detect a plurality of test chip 5 simultaneously, detection efficiency is higher. Specifically, the fixing assembly comprises a key 33 and a first elastic member 34, the key 33 has a clamping position clamped with the test chip 5 and a separation position separated from the test chip 5, and the first elastic member 34 can drive the key 33 to move from the separation position to the clamping position. The relative positions of the test chip 5 and the carrier disc 31 can be locked or unlocked by pressing the key 33. It should be noted that a key 33 and a first elastic member 34 are provided for each mounting position on the carrier plate 31. Preferably, the chip carrier 3 further comprises a cover plate 32, the cover plate 32 is fixed to the carrier plate 31, and the test chip 5 is clamped between the cover plate 32 and the carrier plate 31 to ensure stable positioning of the test chip 5 in the vertical direction. In this embodiment, the carrier disc 31 is provided with a key hole 314 corresponding to each first elastic member 34, the key 33 is slidably disposed in the key hole 314, and the first elastic members 34 respectively abut against the key 33 and the cover plate 32. The chip main body 51 is further provided with a fixing groove 511, and the key 33 is provided with a hook, so that when the hook is engaged with the fixing groove 511, the hook can lock the relative position of the test chip 5 and the tray 31. In other embodiments, the fixing component may be replaced by a screw or the like, and the fixing between the test chip 5 and the carrier plate 31 may be realized by the screw passing through the chip main body 51 and screwing with the carrier plate 31. In this embodiment, the cover plate 32 is mounted on the carrier plate 31 by screws, and the cover plate 32 and the carrier plate 31 cooperate to clamp only a portion of the outer edge of the test chip 5, so that the first light source module 61 can collect data of the test chip 5.

In this embodiment, the first elastic element 34 is preferably a compression spring, and in other embodiments, the first elastic element 34 may be a metal elastic sheet, a plastic elastic sheet, or a rubber pad instead. Preferably, referring to fig. 16, the key 33 is further provided with an insertion hole 332, and the first elastic member 34 is inserted into the insertion hole 332 to ensure that the elastic deformation direction of the first elastic member 34 is stable.

Optionally, referring to fig. 10, 11 and 13, the chip carrier 3 further includes a push rod 35 and a second elastic member 36, the second elastic member 36 is respectively abutted against the carrier disc 31 and the push rod 35, the test chip 5 is in sliding fit with the carrier disc 31, the test chip 5 can slide relative to the carrier disc 31 and has a pre-assembly position and a loading position, when the test chip 5 is located at the loading position, the push button 33 is clamped with the test chip 5, and the second elastic member 36 can drive the push rod 35 to abut against the test chip 5, so that the push rod 35 always has a tendency of driving the test chip 5 to move from the loading position to the pre-assembly position. It should be noted that two push rods 35 and two second elastic members 36 are provided for each mounting position on the carrier tray 31. By arranging the push rod 35 and the second elastic member 36, after the test chip 5 and the carrying disc 31 are unlocked by pressing the key 33, the push rod 35 can push the test chip 5 to move from the loading position to the pre-loading position under the action of the second elastic member 36, and the operation is simple and convenient. Specifically, a push rod groove 315 is formed in the carrier disc 31 corresponding to each push rod 35, the second elastic element 36 is installed in the push rod groove 315, and the push rod 35 is slidably located in the push rod groove 315. In order to ensure the stable stress of the chip main body 51, a baffle 512 is provided on the chip main body 51, and the push rod 35 abuts against the baffle 512. Preferably, in order to ensure that the sliding directions of the test chip 5 and the tray 12 are stable, the slide groove 316 is provided on the carrier 31, the slide rail 513 is provided on the chip main body 51, and the slide rail 513 is in sliding fit with the slide groove 316, further preferably, two slide rails 513 are oppositely provided on the chip main body 51 along the left-right direction, two slide grooves 316 are correspondingly provided on the carrier 31, and the two slide rails 513 are respectively slidably located in the two slide grooves 316. The test chip 5 can be restricted from moving in the left-right direction by the cooperation of the two slide rails 513 and the two slide grooves 316, wherein the left-right direction is perpendicular to the moving direction of the test chip 5 when moving from the pre-assembly position to the loading position, and the left-right direction is perpendicular to the vertical direction.

In this embodiment, the second elastic element 36 is preferably a second compression spring, and in other embodiments, the second elastic element 36 may be a metal elastic sheet, a plastic elastic sheet, or a rubber pad. Preferably, referring to fig. 13, the push rod 35 includes an insertion portion 352, a sliding portion 351 and a head portion 353, which are connected in sequence, wherein the head portion 353 is used for abutting against the test chip 5, the sliding portion 351 is used for sliding-fitting with the carrying disc 31, the insertion portion 352 is sleeved with a second compression spring, and the second compression spring abuts against the sliding portion 351 and the carrying disc 31 respectively, so as to ensure a stable direction when the second compression spring is elastically deformed.

Optionally, referring to fig. 16, the hook of the key 33 is provided with a key guide surface 331, in the process of pushing the test chip 5 to move from the pre-installed position to the loaded position, the chip main body 51 may abut against the key guide surface 331 and push the key 33 to compress the first elastic member 34, so that the hook of the key 33 is located above the test chip 5, so that the test chip 5 passes over the hook of the key 33 and reaches the loaded position, and when the test chip 5 is located at the loaded position, the hook of the key 33 is clamped into the fixing groove 511 under the action of the first elastic member 34, thereby achieving the position locking of the test chip 5.

Optionally, referring to fig. 14, in the process that the test chip 5 moves from the pre-assembly position to the loading position, in order to ensure that the test chip 5 can stably stop at the loading position, the chip main body 51 is provided with a first limiting surface 514, the carrying disc 31 is provided with a second limiting surface 317, and when the first limiting surface 514 abuts against the second limiting surface 317, the test chip 5 is located at the loading position.

The operating principle of the microfluidic biochemical analyzer is as follows:

1) the test chip 5 is loaded on the carrier tray 31

The two slide rails 513 on the test chip 5 are aligned with the two slide grooves 316 on the carrier tray 31 and push the test chip 5 toward the center of the carrier tray 31 until the first mating surface 415 and the second mating surface 431 are abutted, in the process, the two push rods 35 will gradually compress the second elastic member 36, and the hooks of the keys 33 will be snapped into the fixing grooves 511, so as to lock the relative positions of the test chip 5 and the carrier tray 31.

2) And a sample adding process: after the test chip 5 is loaded on the tray 31, the liquid to be tested is dropped from the loading hole 531 of the test chip 5 into the loading channel 515 by a syringe or a pipette.

3) The chip carrier 3 enters the test chamber 111

The in-out bin motor 15 is started, the in-out bin motor 15 drives the gear 13 to rotate, the gear 13 drives the rack 14 to move, so that the tray 12 drives the chip carrier 3 to move from the testing position to the sample adding position, when the second photoelectric sensor 18 detects the second detection hole 128, the in-out bin motor 15 stops rotating, and the tray 12 is located at the sample adding position at the moment. Locate tray 12 in the application of sample position and install chip carrier 3 to fixed round hole 125, reverse start business turn over storehouse motor 15, business turn over storehouse motor 15 drives gear 13 and rotates, gear 13 drives rack 14 and moves, so that tray 12 drives chip carrier 3 and moves to the test position, in this process, chip carrier 3 and the direction inclined plane 221 butt of carousel 22, and move and progressively be located carousel 22 along direction inclined plane 221, when first photoelectric sensor 17 detects first inspection hole 127, business turn over storehouse motor 15 stall, tray 12 is located the test position this moment, and chip carrier 3 and tray 12 complete separation and support in carousel 22.

4) And heating the mixture

Go up heating body 71 and lower heating body 72 circular telegram heating to by adding the real-time temperature of two heating bodies of two temperature sensor 73 detections, when reaching the temperature of requirement, stop heating body 71 and lower heating body 72 heating, if when the temperature reduction back, go up heating body 71 and lower heating body 72 circular telegram heating, so circulation, in order to guarantee that the temperature in test storehouse 111 keeps the test temperature of requirement always, in order to eliminate ambient temperature's influence.

5) And locking the same

When the electric push rod starts to work, the moving shaft 421 drives the pressure plate 412 and the suction block 411 to move downwards through the top shaft 43, and when the first sensor 45 detects the sensing piece 46, at this time, the suction block 411 is inserted into the fixing hole 311 and is sucked with the magnetic member 23, the pressure plate 412 is pressed on the cover plate 32 of the chip carrier 3 to press the carrier plate 31 on the turntable 22, and the relative position of the chip carrier 3 and the turntable 22 can be locked. Then, the electric push rod rotates in the opposite direction, the moving shaft 421 drives the top shaft 43 to move upward for a certain distance, so that the top shaft 43 is located in the second matching hole 414, the top shaft 43 is completely separated from the platen 412, and the rotation test of the main motor 21 is waited.

6) Unlocking of the lock

After the test is completed, the electric push rod starts to work, the moving shaft 421 drives the top shaft 43 to enter the first matching hole 413, and continues to drive the pressure plate 412 and the suction block 411 to move upwards through the top shaft 43, so that the magnetic member 23 and the suction block 411 are separated. When the second sensor 47 detects the sensing piece 46, the electric pushing rod 35 stops working, at this time, the suction block 411 is higher than the chip carrier 3, so as to unlock the chip carrier 3, the in-out motor 15 starts working, the tray 12 is driven to withdraw the chip carrier 3 from the testing bin 111, and the test is completed.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A chip carrier, comprising:

the test device comprises a carrying disc (31), wherein a plurality of mounting positions are uniformly arranged on the carrying disc (31) along the circumferential direction, and each mounting position can be used for mounting a test chip (5);

the test chip fixing device comprises a plurality of fixing assemblies, wherein the fixing assemblies and the mounting positions are arranged in a one-to-one correspondence mode, the fixing assemblies are arranged on a carrying disc (31), and the fixing assemblies can fix the test chip (5) on the carrying disc (31).

2. The chip carrier according to claim 1, wherein the fixing component comprises a key (33) floatingly disposed on the carrying tray (31), the key (33) has a hook, the testing chip (5) is provided with a fixing groove (511), and when the key (33) is engaged with the testing chip (5), the hook is engaged with the fixing groove (511).

3. The chip carrier according to claim 2, characterized in that the fixing assembly further comprises a first elastic member (34), the key (33) has a clamping position clamped with the test chip (5) and a separation position separated from the test chip (5), and the first elastic member (34) can drive the key (33) to move from the separation position to the clamping position.

4. A chip carrier according to claim 3, further comprising a cover plate (32), wherein the cover plate (32) is fixed to the boat (31) and the test chip (5) is clamped between the cover plate (32) and the boat (31).

5. The chip carrier according to claim 4, wherein a plug hole (332) is formed in the key (33), the first elastic member (34) is a first compression spring, one end of the first compression spring is inserted into the plug hole (332), and the other end of the first compression spring abuts against the cover plate (32).

6. The chip carrier according to claim 2, wherein a slide rail (513) is disposed on the test chip (5), a slide groove (316) is disposed on the carrying tray (31) corresponding to each mounting position, the slide rail (513) is slidably disposed in the slide groove (316), the test chip (5) can slide relative to the carrying tray (31) to have a pre-installation position and a loading position, and when the test chip (5) is located at the loading position, the key (33) is engaged with the test chip (5).

7. The chip carrier according to claim 6, further comprising a plurality of pusher assemblies, at least one of the pusher assemblies being disposed corresponding to each of the mounting locations, the pusher assemblies comprising a pusher (35) and a second resilient member (36);

when the test chip (5) is located at the loading position, the second elastic piece (36) can drive the push rod (35) to abut against the test chip (5), so that the push rod (35) always has a tendency of driving the test chip (5) to move from the loading position to the pre-loading position.

8. The chip carrier according to claim 7, wherein the push rod (35) comprises a plug portion (352), a sliding portion (351) and a head portion (353) which are connected in sequence, the head portion (353) is used for abutting against the test chip (5), the sliding portion (351) is in sliding fit with the carrying disc (31), the second elastic member (36) is a second compression spring which is sleeved on the plug portion (352), and the second compression spring abuts against the sliding portion (351) and the carrying disc (31) respectively.

9. The chip carrier according to claim 6, wherein a first limiting surface (514) is disposed on the chip carrier, a second limiting surface (317) is disposed on the carrying plate (31), and when the test chip (5) is located at a loading position, the first limiting surface (514) abuts against the second limiting surface (317) to prevent the test chip (5) from passing the loading position.

10. A microfluidic biochemical analyzer, comprising the chip carrier according to any one of claims 1 to 9.

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