A basket with anti-toppling and anti-sliding function and a closed-loop detection and control system

Abstract

The present application relates to the technical field of medical devices, and more particularly to a basket with anti-toppling and anti-sliding functions, a closed-loop detection and control system, the system comprising a sample holder, a basket, an analyzer and corresponding position / state sensors, when the basket is lifted, the radial force of the torsional spring in the magnetic attraction device makes the steel sheet rotate to a horizontal position and be attracted to the magnet at the bottom of the sample holder, thereby attracting the sample holder to the bottom surface of the basket, at the same time, the basket handle root baffle extends out of the basket, cooperates with the limiting device to close the test channel, and ensures that the sample holder cannot fall out of the basket, when the basket is placed into the analyzer, the magnetic attraction device and the limiting device at the bottom of the basket are reset, the sensor confirms and sends a signal to the control system, the magnetic attraction and mechanical limiting of the sample holder are released, and the push mechanism can push the sample holder into the detection position, after the test is completed, the empty basket can also be used to recover the sample holder, closed-loop monitoring and control of the state of the relevant mechanism are realized, and the deficiencies of the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a basket with anti-tipping and anti-slipping functions, and a closed-loop detection and control system. Background Technology

[0002] Sample analyzers are the core equipment for automated testing of clinical samples. Their supporting sample racks, sample baskets, and automatic sample loading and retrieval systems directly determine the efficiency and safety of sample handling.

[0003] In the current workflow of the sample analyzer, test tube samples are carried by sample racks, and then the sample racks are placed in batches into sample baskets. The automatic sample feeding system then transports the sample racks from the baskets to the testing station one by one. After the testing is completed, the retrieval system returns the sample racks to the baskets.

[0004] However, existing technologies have significant shortcomings: Firstly, most sample racks are open structures with an opening on one side. Without a fully automated, fully enclosed sample processing system, the baskets must be manually transported. During this process, the sample racks are prone to sliding or even tipping over due to vibration, tilting, or external force, leading to sample tube detachment, damage, or leakage. This not only wastes samples but also poses a risk of biological contamination due to leakage. Secondly, some sample baskets are not designed to prevent tipping. The baskets lack applications for confirming the status of the rack's limiting and locking mechanisms, and also lack relevant mechanical-electric closed-loop control systems. When the number of sample racks in the basket is small or unevenly distributed, the stability of the racks within the basket further decreases, exacerbating the risk of tipping. Furthermore, there is a possibility that mechanical failure may prevent the sample racks from being ejected from the basket. Summary of the Invention

[0005] The purpose of this invention is to provide a basket with anti-tipping and anti-slip functions, as well as a closed-loop detection and control system. This aims to solve the problems in existing sample analyzer accessories, such as the weak anti-tipping capability of the sample rack itself, insufficient limiting of the sample rack by the sample basket, and the inability to automatically confirm whether the sample basket is correctly positioned, whether the bottom of the basket is stable, and whether the relevant anti-tipping and locking mechanisms are correctly released after the sample basket is installed in the analyzer.

[0006] To achieve the above objectives, the present invention provides a basket with anti-tipping and anti-slip functions, including a sample rack and a basket body. The basket body is designed as a rectangular groove with one open end, the open end being the front end of the basket. The front end is provided with a rotatable limiting device and a capacity limit warning line. Telescopic handles are symmetrically provided at both the front and rear ends. The size of the sample rack is adapted to the basket body, and multiple sample racks can be placed side by side into the basket body.

[0007] The bottom of the sample holder is provided with several grooves, and several magnets are embedded in the grooves accordingly;

[0008] The bottom of the basket body has several slots, and the slots are equipped with magnetic suction devices that can rotate and be attracted to magnets; a baffle is provided at the base of the front handle of the basket body.

[0009] The magnetic attraction device includes a torsion spring, a rotating shaft, screws, and a steel sheet. The steel sheet is fixed to the rotating shaft by screws. When not subjected to external force, the upper end of the steel sheet is horizontal. The torsion spring is sleeved on the rotating shaft and has one end abutting against the upper end of the steel sheet.

[0010] The limiting device has a similar structure to the magnetic suction device, including a torsion spring, a rotating shaft, a screw, and a blocking plate. When not subjected to external force, the upper end of the blocking plate is horizontally positioned and extends out of the bottom of the basket.

[0011] The bottom surface of the basket body has two protrusions, which are diagonally distributed on both sides of the bottom surface.

[0012] The present invention also proposes a closed-loop detection and control system, including the basket with anti-tipping and anti-slip functions, the analyzer, and multiple sets of position / status sensors. The analyzer is provided with a pusher mechanism and a pin mechanism. The pusher mechanism includes a sample injection pusher mechanism and a retrieval pusher mechanism, which respectively include longitudinal and transverse directions. The sample injection longitudinal pusher mechanism is set in a groove at the bottom of the basket body and can slide along the rear end of the basket to the front end.

[0013] The pin mechanism is located at the rear end of the basket body, locking the basket body onto the working surface;

[0014] The bottom surface of the basket body is provided with pin holes, and the position of the pin holes is adapted to the position of the pins on the bottom plate of the analyzer recovery area.

[0015] Multiple sets of position / status sensors are installed at the corresponding positioning positions of the basket on the analyzer to collect position / status information of the relevant moving parts of the basket and send signals to the system.

[0016] Once the position / status sensor confirms that the basket is smoothly placed into the analyzer and that the magnetic suction device and the limiting device have returned to their correct positions, the pusher mechanism will perform the sample injection action.

[0017] When the basket is empty, it must be placed horizontally. After the magnetic suction device and the limiting device are confirmed to be in place, the pin mechanism locks the basket, and the pusher mechanism pushes the sample rack to the designated position of the basket. After confirming that it is full, the lock is released and the user is reminded to take the basket away.

[0018] This invention provides a basket with anti-tipping and anti-slip functions, along with a closed-loop detection and control system. The system includes a sample rack, a basket, an analyzer, and corresponding position / status sensors. When the basket is lifted, the torsion spring in the magnetic attraction device applies a radial force to the steel sheet, causing the steel sheet to rotate along with the rigidly connected shaft. When the steel sheet reaches a horizontal position, it generates an appropriate attraction force with the magnet at the bottom of the sample rack, thus firmly adhering the sample rack to the bottom of the basket. Simultaneously, the baffle at the base of the basket handle extends out of the basket, working with a limiting device to close the test channel and ensure that the sample rack does not fall out of the basket. When the basket is placed into the analyzer, the magnetic attraction device and the limiting device at the bottom of the basket return to their original positions. After confirmation by the sensors, a signal is sent to the control system to release the magnetic attraction and mechanical limiting force on the sample rack, allowing the pusher mechanism to push the sample rack into the detection position. After the test, the empty basket can also be used to retrieve the sample rack, achieving closed-loop monitoring and control of the relevant mechanism status, thus overcoming the shortcomings of existing technologies. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the sample rack structure in a specific embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the basket structure in a specific embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the magnetic attraction device structure in a specific embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the magnetic suction device in the case of a basket being empty and not placed on the pre-processing workbench during the manual loading and handling of samples according to the present invention.

[0024] Figure 5 This is a schematic diagram of the magnetic suction device in the case of a basket being empty and placed on a pre-processing workbench during the manual loading and handling of samples according to the present invention.

[0025] Figure 6 This is a schematic diagram of the limiting device status when the basket is on the pre-processing workbench in the scenario of manual loading and handling of the sample of the present invention.

[0026] Figure 7 This is a schematic diagram of the magnetic suction device in the case of manual loading and handling of the sample of the present invention, when the basket is not removed from the workbench.

[0027] Figure 8 This is a schematic diagram of the magnetic suction device in the case of a sample basket being loaded onto a sample rack and detached from the workbench in the manual loading and handling scenario of the present invention.

[0028] Figure 9 This is a schematic diagram showing the state of the handle and limiting device when the basket is on the pre-processing workbench in the scenario of manual loading and handling of the sample of the present invention.

[0029] Figure 10 This is a schematic diagram showing the status of the handle and limiting device of the basket during the transfer process in the scenario of manual loading and handling of the sample of this invention.

[0030] Figure 11 This is a schematic diagram of the bottom structure of the sample basket in a specific embodiment of the present invention.

[0031] Figure 12 This is a schematic diagram of the state when the magnetic suction device is not in contact with the analyzer base plate during the sample loading scenario of this invention.

[0032] Figure 13 This is a schematic diagram showing the state of the magnetic suction device contacting the analyzer base plate when the sample is loaded onto the analyzer.

[0033] Figure 14 This is a schematic diagram of the different states of the limiting device when the sample of this invention is installed on a machine.

[0034] Figure 15 This is a schematic diagram of the handle being retracted when the sample of this invention is installed on a machine.

[0035] Figure 16 This is a schematic diagram of the handle's state when the sample is being loaded onto the analyzer and is not in contact with the analyzer's base plate.

[0036] Figure 17 This is a schematic diagram showing the state of the handle after contacting the bottom plate of the analyzer when the sample is loaded onto the machine according to the present invention.

[0037] Figure 18 This is a schematic diagram of the sample loading scenario of the present invention, showing the sample being loaded into the test basket.

[0038] Figure 19 This is a schematic diagram of the bottom state of the basket when it is empty and placed in the instrument recycling area.

[0039] Figure 20 This is a schematic diagram of the magnetic suction device when the basket of the present invention is empty and placed in the instrument recycling area.

[0040] Figure 21 This is a schematic diagram of the limiting device status when the basket of the present invention is empty and placed in the instrument recycling area.

[0041] Figure 22This is a schematic diagram showing the handle state when the basket of the present invention is empty and placed in the instrument recycling area.

[0042] Figure 23 This is a schematic diagram of the handle state when the basket of the present invention is empty and placed in the instrument recovery area, without contacting the bottom plate of the analyzer.

[0043] Figure 24 This is a schematic diagram of the handle's state after contacting the analyzer's base plate when the basket of this invention is unloaded and placed in the instrument recovery area.

[0044] Figure 25 This is a schematic diagram of sample rack retrieval in a specific embodiment of the present invention. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] This invention provides a basket with anti-tipping and anti-slip functions, including a sample rack and a basket body. The basket body is designed as a rectangular groove with one open end, the open end being the front end of the basket. The front end is provided with a rotatable limiting device and a capacity limit warning line. Telescopic handles are symmetrically provided at both the front and rear ends. The size of the sample rack is adapted to the basket body, and multiple sample racks can be placed side by side into the basket body.

[0048] The bottom of the sample holder is provided with several grooves, and several magnets are embedded in the grooves accordingly;

[0049] The bottom of the basket body has several slots, and the slots are equipped with magnetic suction devices that can rotate and be attracted to magnets; a baffle is provided at the base of the front handle of the basket body.

[0050] The magnetic attraction device includes a torsion spring, a rotating shaft, screws, and a steel sheet. The steel sheet is fixed to the rotating shaft by screws. When not subjected to external force, the upper end of the steel sheet is horizontal. The torsion spring is sleeved on the rotating shaft and has one end abutting against the upper end of the steel sheet.

[0051] The limiting device has a similar structure to the magnetic suction device, including a torsion spring, a rotating shaft, a screw, and a blocking plate. When not subjected to external force, the upper end of the blocking plate is horizontally positioned and extends out of the bottom of the basket.

[0052] The bottom surface of the basket body has two protrusions, which are diagonally distributed on both sides of the bottom surface.

[0053] The present invention also proposes a closed-loop detection and control system, including the basket with anti-tipping and anti-slip functions, the analyzer, and multiple sets of position / status sensors. The analyzer is provided with a pusher mechanism and a pin mechanism. The pusher mechanism includes a sample injection pusher mechanism and a retrieval pusher mechanism, which respectively include longitudinal and transverse directions. The sample injection longitudinal pusher mechanism is set in a groove at the bottom of the basket body and can slide along the rear end of the basket to the front end.

[0054] The pin mechanism is located at the rear end of the basket body, locking the basket body onto the working surface;

[0055] The bottom surface of the basket body is provided with pin holes, and the position of the pin holes is adapted to the position of the pins on the bottom plate of the analyzer recovery area.

[0056] Multiple sets of position / status sensors are installed at the corresponding positioning positions of the basket on the analyzer to collect position / status information of the relevant moving parts of the basket and send signals to the system.

[0057] After the position / status sensor confirmed that the basket was placed smoothly into the analyzer and that the magnetic suction device and the limiting device had returned to their correct positions, the pusher mechanism performed the sample injection action;

[0058] When the basket is empty, it must be placed horizontally. After the magnetic suction device and the limiting device are confirmed to be in place, the pin mechanism locks the basket, and the pusher mechanism pushes the sample rack to the designated position of the basket. After confirming that it is full, the lock is released and the user is reminded to take the basket away.

[0059] The following description, in conjunction with specific embodiments, provides further details. Please refer to the provided text. Figures 1 to 25 :

[0060] The sample holder structure in this embodiment is as follows: Figure 1 As shown, the bottom of the sample holder has several grooves, and each groove contains a corresponding magnet. The diagram uses only one magnet as an example.

[0061] The front structure of the basket is as follows Figure 2As shown, the bottom of the basket has several slots, and each slot is equipped with a magnetic attraction device that can be attracted to a magnet. The structure of the magnetic attraction device is as follows: Figure 3 As shown. The front of the basket is designed with a rotating limit device to prevent the operator from overloading the sample holder, and there is also a warning line indicating the capacity limit. Telescopic handles are designed at both ends of the basket. In manual handling scenarios, the extended handles prevent the operator's hands from contacting the sample tubes; in loading the basket onto the machine, the handles fall back into place under their own weight, reducing the vertical space requirements of the instrument. Additionally, a baffle is designed at the base of the front handle. In manual handling scenarios, in the event of a sudden external force impact that cannot be counteracted by magnetic force, the baffle and the limit mechanism can close the testing channel, ensuring that the sample holder does not detach from the basket.

[0062] The bottom structure of the sample basket is as follows Figure 11 As shown, the bottom of the basket has positioning pin holes, which, by engaging with pins on the analyzer, accurately position the basket on the analyzer. There are also two protrusions on the upper right and lower left of the bottom of the basket, which trigger sensors on the analyzer to generate corresponding signals to identify the current state of the basket. The magnetic suction device and the drive torsion spring components of the limiting mechanism are also located at the bottom of the basket.

[0063] The following three specific use cases will be used to illustrate the application: sample loading and handling, sample loading onto the machine, and sample unloading from the machine.

[0064] (1) Sample loading and handling scenarios: such as Figure 4 , 5 As shown, the operator places the basket on the pre-processing worktable, and the basket in this scene is in an unloaded state. At this time, the steel plate inside the magnetic suction device is subjected to the normal force of the worktable surface. This force counteracts the diametrical torque generated by the torsion spring, causing the steel plate to rotate together with the rigidly connected shaft. At this time, the magnetic suction device is in the retracted state.

[0065] At the same time, such as Figure 6 As shown, a torsion spring inside the limiting device applies a radial force to the stop plate, keeping it in the extended position. This prevents the operator from placing sample racks into the basket from the outlet and from overloading the basket.

[0066] The operator places the basket on the pre-processing worktable. At this time, the steel plate of the magnetic suction device is subjected to the normal force of the worktable surface, and the magnetic suction device is in the retracted state. Figure 7 and Figure 8As shown. After the operator places all the sample holders into the basket, they lift the handles at both ends to transport the samples in the laboratory. At this point, the basket detaches from the workbench, and the steel plate inside the magnetic suction device is no longer subjected to the normal force of the workbench. The radial force applied by the torsion spring to the steel plate causes the steel plate to rotate along with the rigidly connected shaft. When the steel plate moves to a horizontal position, it generates a suitable attraction force with the magnet at the bottom of the sample holder, thus firmly adhering the sample holder to the bottom of the basket. During transportation, even under slight vibration, the sample holder remains stable due to the continuous magnetic attraction.

[0067] like Figure 9 As shown, when the basket is on the pre-processing workbench, the handle retracts naturally due to gravity, and the baffle at the base of the handle does not restrict the movement of the sample holder.

[0068] like Figure 10 As shown. During transport, the handle is lifted by the operator, and the baffle at the base of the handle extends out of the basket. If a sudden, large external force is applied at this time, the magnetic attraction of the sample holder may instantly fail. The baffle and limiting device at the base of the handle can close the testing channel up and down, effectively preventing the sample holder from falling out of the basket.

[0069] (2) Sample loading scenarios: such as Figure 11 As shown, the operator first aligns the pin hole at the bottom of the sample basket with the sample holder onto the pin on the bottom plate of the analyzer's test area. The sample basket is then guided into the analyzer via the pin's guide structure. At this time, bosses 1 and 2 trigger sensors 1 and 2 on the analyzer's bottom plate to generate a signal indicating that the sample basket is in operation. If the sample basket is not correctly and smoothly placed into the analyzer, the signal deviation generated by sensors 1 and 2 will be greater than the preset value, indicating that the basket is in an abnormal state.

[0070] At the same time, such as Figure 12 , 13 As shown, when the operator places the basket containing the sample holder into the sample inlet area of ​​the instrument from top to bottom, the steel plate inside the magnetic suction device is subjected to a normal force from the worktable surface. This force counteracts the diametrical torque generated by the torsion spring, causing the steel plate to rotate along with the rigidly connected shaft. At this point, the steel plate separates from the magnet at the bottom of the sample holder, and the sample holder is no longer constrained by the magnetic force. Simultaneously, a sensor 3 is installed at a corresponding position on the analyzer's base plate to receive the signal generated by the rotational movement of the steel plate. This signal is used to confirm that the magnetic suction device has returned to the designated position and sends a confirmation signal to the control system. At this time, the sample holder can begin to be transported and tested inside the instrument according to the set program.

[0071] At the same time, such as Figure 14As shown. The limiting device is also triggered by the protrusion structure on the analyzer's base plate to rotate, causing it to leave the horizontal position and retract into the basket. At this time, a sensor 4 is installed at a corresponding position on the analyzer's base plate to receive the signal generated by the rotation of the limiting device. This signal is used to confirm that the limiting device has returned to the designated position and to send a confirmation signal to the control system.

[0072] At the same time, such as Figure 15 , 16 As shown in Figure 17, the handle also falls due to gravity, and the handle stop automatically retracts. At this time, sensors 5-8, located at corresponding positions on the analyzer's base plate, receive signals generated by the bottom of the handle. This signal is used to confirm that the handle has retracted to the preset position inside the basket and sends a confirmation signal to the control system. At this time, the test channel changes from closed to open. If the consistency deviation of the signal strength of sensors 5-6 is inconsistent with the preset value, it indicates that the basket or handle has not been placed horizontally in place.

[0073] Finally, as Figure 18 As shown. After receiving valid signals from sensors 1-8, the system confirms, according to the preset signal logic, that the basket has been smoothly placed into the analyzer, meaning that the relevant magnetic suction device, limiting device, and handle are all in the preset state. Then, the sample holder inside the basket and the sample it carries can be tested normally.

[0074] At this point, the longitudinal pusher mechanism on the instrument can begin to push the sample holder out of the basket along the test channel direction according to the test command. A sensor 9 is installed at a specific position on the instrument. When the sensor 9 detects that the sample holder is in place, it will trigger the transverse pusher mechanism to send the sample holder to the relevant position inside the instrument to perform the detection action.

[0075] (3) Sample removal scenario: This step involves placing the empty sample basket into the instrument's retrieval area. The basket is responsible for retrieving the samples after testing. Figure 19 As shown. The operator first aligns the pin hole at the bottom of the empty recovery basket with the pin on the bottom plate of the analyzer's recovery area. The basket to be tested is then loaded into the analyzer through the pin's guide structure. At this time, bosses 3 and 4 trigger sensors 10 and 11 to generate a signal for the recovery basket to be loaded into the analyzer.

[0076] At the same time, such as Figure 20 As shown, the magnetic suction device is subjected to the normal force of the analyzer base plate, moves away from the horizontal position and retracts into the basket. At this time, the steel plate of the magnetic suction device will not generate magnetic attraction with the magnet at the bottom of the sample rack that is about to be pushed back.

[0077] Meanwhile, a sensor 12 is installed at a corresponding position on the analyzer base plate to receive signals generated by the rotational movement of the steel sheet. This signal is used to confirm that the magnetic suction device has returned to the designated position and to send a confirmation signal to the control system.

[0078] At the same time, such as Figure 21 As shown, the limiting device is also triggered by the protrusion structure on the analyzer's base plate to rotate, causing it to leave the horizontal position and retract into the basket. At this time, a sensor 13 is positioned at a corresponding location on the analyzer's base plate to receive the signal generated by the rotating motion of the limiting device. This signal confirms that the limiting device has rotated to the designated position and sends a confirmation signal to the control system.

[0079] At the same time, such as Figure 22 , 23 As shown in Figure 24, the handle also falls due to gravity, and the handle stop automatically retracts. At this time, sensors 14-17, located at corresponding positions on the analyzer's base plate, receive signals generated by the bottom of the handle. This signal is used to confirm that the handle has retracted to the preset position inside the basket and sends a confirmation signal to the control system. At this time, the test channel changes from closed to open. If the consistency deviation of the signal strength of sensors 14-17 is inconsistent with the preset value, it indicates that the basket or handle has not been placed horizontally in place.

[0080] like Figure 25 As shown. After the system confirms that the signals from sensors 10-17 are all in the preset state, the latch mechanism on the analyzer base plate pops out, locking the basket to prevent the operator from removing it during retrieval. At this point, the basket can begin receiving the sample racks after testing.

[0081] After the test is completed, the sample rack is pushed to the designated position by the horizontal pusher in the analyzer's recovery area, triggering sensor 18 to generate a signal. Upon receiving this signal, the vertical pusher in the analyzer's recovery area then pushes the sample racks back into the basket one by one. When a certain number of sample racks have accumulated, the proximity sensor 19 on the bottom plate of the instrument's recovery area is triggered, generating a full-load signal. At this point, the pin mechanism on the analyzer's bottom plate retracts, the system alarms that the recovery basket is full, and the user is prompted to remove the basket and clean out the sample racks inside.

[0082] When the operator lifts the handle and retracts the basket from the analyzer's base plate, the magnetic suction device resets under the drive of the torsion spring mechanism, and the magnet at the bottom of the sample holder engages with the magnetic suction device. Simultaneously, the limiting device also resets under the drive of the torsion spring mechanism, re-closing the test channel together with the extended handle baffle. This ensures that the sample will not slip or fall out of the basket during operator transport.

[0083] In summary, the present invention has the following beneficial effects:

[0084] 1. When the operator lifts the basket to transfer the sample, the basket leaves the workbench. The radial force of the torsion spring drives the steel plate to rotate with the shaft to a horizontal position, forming an attraction force with the magnet at the bottom of the sample holder, firmly adhering the sample holder to the bottom of the basket. Even slight vibrations during handling can be maintained by the magnetic attraction to keep the sample holder stable, avoiding slippage or tipping of the sample holder during manual handling, which could lead to sample tubes falling off, breaking, or sample leakage, resulting in sample waste and the risk of contamination.

[0085] 2. When the operator puts an excessive amount of sample racks into the basket, the limiting mechanism will block the sample racks from being put in, ensuring the normal operation of the instrument.

[0086] 3. When the operator is handling the sample, if there is a sudden external force impact that the magnetic force cannot cancel out, the baffle and limiting mechanism can close the test channel to ensure that the sample rack will not fall out of the basket.

[0087] 4. When the operator places the basket into the instrument, the magnetic suction device and limiting device at the bottom of the basket are triggered by relevant structures. Simultaneously, relevant sensors are activated and signals are sent to the control system to confirm that the basket is placed horizontally and that all mechanical structures are in their normal, preset states. The magnetic attraction and mechanical limiting mechanisms automatically release, preventing jamming or tipping of the sample rack during sample delivery and retrieval due to an unstable basket or mechanical malfunctions in the magnetic suction / limiting mechanisms. Simultaneously, the handle retracts into the instrument due to gravity. This opens the testing channel of the sample rack, eliminating the need for manual release and improving the instrument's automation level and testing efficiency.

[0088] 5. When the test is finished, the operator lifts the basket, triggering the magnetic suction mechanism, and the sample holder is firmly attached to the inside of the basket. At the same time, the baffle on the handle extends, closing the test channel together with the limiting mechanism, allowing the sample to be transferred smoothly and safely.

[0089] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A basket with anti-tipping and anti-slip functions, comprising a sample rack and a basket body, characterized in that, The basket body is designed as a rectangular groove with one open end, the open end being the front end of the basket. The front end is equipped with a rotatable limiting device and a capacity limit warning line. Telescopic handles are symmetrically arranged at both the front and rear ends. The size of the sample rack is adapted to the basket body, and multiple sample racks can be placed side by side into the basket body. The bottom of the sample holder is provided with several grooves, and several magnets are embedded in the grooves accordingly; The bottom of the basket body has several slots, and the slots are equipped with magnetic suction devices that can rotate and be attracted to magnets; a baffle is provided at the base of the front handle of the basket body.

2. The basket with anti-tipping and anti-slip functions as described in claim 1, characterized in that, The magnetic attraction device includes a torsion spring, a rotating shaft, screws, and a steel sheet. The steel sheet is fixed to the rotating shaft by screws. When not subjected to external force, the upper end of the steel sheet is horizontal. The torsion spring is sleeved on the rotating shaft and has one end abutting against the upper end of the steel sheet.

3. The basket with anti-tipping and anti-slip functions as described in claim 2, characterized in that, The limiting device has a similar structure to the magnetic suction device, including a torsion spring, a rotating shaft, a screw, and a blocking plate. When not subjected to external force, the upper end of the blocking plate is horizontally positioned and extends out of the bottom of the basket.

4. The basket with anti-tipping and anti-slip functions as described in claim 3, characterized in that, The bottom surface of the basket body has two protrusions, which are diagonally distributed on both sides of the bottom surface.

5. A closed-loop detection and control system, comprising a basket with anti-tipping and anti-slip functions as described in any one of claims 1 to 4, an analyzer, and multiple sets of position / status sensors, characterized in that, The analyzer is equipped with a pusher mechanism and a pin mechanism. The pusher mechanism includes a sample injection pusher mechanism and a recovery pusher mechanism, which respectively include longitudinal and transverse directions. The longitudinal sample injection pusher mechanism is set in a groove at the bottom of the basket body and can slide along the rear end of the basket to the front end. The pin mechanism is located at the rear end of the basket body, locking the basket body onto the working surface; The bottom surface of the basket body is provided with pin holes, and the position of the pin holes is adapted to the position of the pins on the bottom plate of the analyzer recovery area. Multiple sets of position / status sensors are installed at the corresponding positioning positions of the basket on the analyzer to collect position / status information of the relevant moving parts of the basket and send signals to the system.

6. The closed-loop detection and control system as claimed in claim 5, characterized in that, After the position / status sensor confirmed that the basket was placed smoothly into the analyzer and that the magnetic suction device and the limiting device had returned to their correct positions, the pusher mechanism performed the sample injection action; When the basket is empty, it must be placed horizontally. After the magnetic suction device and the limiting device are confirmed to be in place, the pin mechanism locks the basket, and the pusher mechanism pushes the sample rack to the designated position of the basket. After confirming that it is full, the lock is released and the user is reminded to take the basket away.

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