Sample analysis system and scheduling method thereof

Abstract

The invention relates to a sample analysis system and a scheduling method thereof, the sample analysis system comprises a sample introduction area, a sampling station, a recovery area, a buffer area, a push-in mechanism, a push-out mechanism and a hook frame mechanism, the sample introduction area is provided with a sample introduction inlet, and the push-in mechanism is used for pushing a sample frame of the sample introduction area into the sample introduction inlet; the recovery area is provided with a recovery position, and the cache area is used for caching the sample rack after sampling is finished; the push-out mechanism is used for pushing out the sample rack at the recovery position to the recovery area; and the hook frame mechanism is used for driving the sample frame to move among the sample inlet, the sampling station, the recovery station and the buffer area. According to the method, the cache region is arranged and used for caching the samples after sampling is finished, and when the samples need to be remeasured, the cached samples are scheduled from the cache region for remeasurement; only samples which do not need to be remeasured can be moved to the recovery area to be recovered. The low-cost re-measurement function of the sample can be realized without a large number of reaction cups; the use amount of the reaction cups is saved, the use cost of a user is reduced, and the use amount of samples is saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of in vitro diagnosis, and in particular relates to a sample analysis system and a scheduling method thereof. Background Art

[0002] Sample analysis systems (such as biochemical analyzers and coagulation analyzers) are widely used testing instruments in the field of in vitro diagnostic technology. They can obtain clinical diagnostic information by testing samples such as human blood and body fluids, providing a basis for disease diagnosis and body function judgment.

[0003] During clinical testing, the test results of test items may be uncertain. For example, it is not possible to directly determine whether the test results of the test items are positive or negative. Retesting is required to confirm in order to ensure the reliability of the test results. Taking the coagulation analyzer as an example, the current methods for retesting test items are: all samples need to be prepared in two reaction cups, one for normal testing and the other as a spare. The spare samples are first stored in the sample analysis system, and the samples for normal testing are used for testing. When the samples for normal testing are tested and do not need to be retested, the spare samples are taken out of the sample analysis system; when the samples for normal testing are tested and it is determined that they need to be retested, the spare samples in the sample analysis system are dispatched for retesting. Not only does it require a large number of reaction cups, but it also requires an increase in the amount of samples. Summary of the invention

[0004] The present invention overcomes the deficiencies in the prior art and provides a sample analysis system and a scheduling method thereof, which not only saves the amount of reaction cups and reduces the user's use cost, but also saves the amount of samples used.

[0005] The specific technical solutions of the present invention are as follows: A sample analysis system includes a sample feeding area, a sampling station, a recovery area, a buffer area, a push mechanism, a push mechanism and a hook mechanism. The sample injection area is provided with a sample injection inlet, and the pushing mechanism is used to push the sample rack of the sample injection area into the sample injection inlet; The recycling area is provided with a recycling position, and the pushing mechanism is used to push the sample rack at the recycling position into the recycling area; The buffer area is used to cache the sample rack after sampling is completed; The hook rack mechanism is used to drive the sample rack to move between the sampling inlet, the sampling station, the recovery station and the buffer area.

[0006] Preferably, the sampling area, sampling station, recovery area, and buffer area are arranged in sequence, and the hook frame mechanism can move along the length direction of the sampling area, sampling station, recovery area, and buffer area, and the sampling inlet, sampling station, recovery station, and buffer area are all within the moving path of the hook frame mechanism.

[0007] Preferably, a slidable sample rack cache tray is provided in the cache area, and its sliding direction is perpendicular to the moving direction of the hook rack mechanism.

[0008] Preferably, the cache area is also provided with an emergency insertion channel located on one side of the sample rack cache tray, for inserting the emergency sample rack into the sample rack cache tray.

[0009] Preferably, the hook rack mechanism comprises a rack, a rack hook disposed on the rack and a driving mechanism, and the driving mechanism drives the rack hook to rise or fall to hook or release the sample rack.

[0010] Preferably, the rack hook comprises two symmetrically arranged hook units, and when the two hook units rise synchronously, their tops can open relative to each other to hook the sample rack, and when the two hook units fall synchronously, their tops can close relative to each other to release the sample rack.

[0011] Preferably, when the two hook units rise synchronously to the open state, their tops are in an inverted figure eight shape, and when the two hook units fall synchronously to the closed state, their tops are close to each other.

[0012] Preferably, the bracket is provided with a guide slot and a hook driving plate, the hook driving plate is provided with a strip slot, the two hook body units can move along the guide slot and the strip slot at the same time, and the driving mechanism drives the hook driving plate to move up and down, thereby driving the two hook body units to rise or fall synchronously.

[0013] Preferably, the two hook units are rotatably connected to the bracket at one side away from each other, and the bottoms of the hook units are connected to sliding shafts, which are embedded in the guide sliding grooves and the strip grooves at the same time.

[0014] Preferably, the bracket is further provided with an anti-slipping plate, a receiving cavity is formed between the anti-slipping plate and the bracket, and the two hook units are embedded in the receiving cavity.

[0015] Preferably, the guide slots include two, corresponding one to one to the two hook units, and the two guide slots are arranged in an eight-shaped shape.

[0016] Preferably, the driving mechanism includes a screw motor, a screw and a screw nut, the screw motor is transmission-connected to the screw, the screw nut is sleeved on the screw, and the hook driving plate is connected to the screw nut; the screw motor drives the screw to rotate, so that the screw nut moves along the screw to drive the hook driving plate to move up and down.

[0017] Preferably, a horizontal extension portion is provided on one side of the hook driving plate and a vertical extension portion is provided on the other side, a guide rail is provided on the bracket, the horizontal extension portion of the hook driving plate is connected to the lead screw nut, and the vertical extension portion is slidably connected to the guide rail; the lead screw motor drives the lead screw to rotate, so that the lead screw nut moves along the lead screw to drive the hook driving plate to slide up and down along the guide rail.

[0018] Preferably, the pushing mechanism comprises a support frame, a first driving mechanism and a pushing bar arranged on the support frame, both ends of the pushing bar are symmetrically provided with abutment parts for abutting against the sample rack, and the first driving mechanism drives the pushing bar to reciprocate along the pushing direction of the sample rack.

[0019] Preferably, the ejection mechanism comprises a second driving mechanism and an ejection plate for ejecting the sample rack at the recovery position, and the second driving mechanism drives the ejection plate to reciprocate along the ejection direction of the sample rack.

[0020] The present invention also relates to a scheduling method for a sample analysis system, comprising the following steps: Place the sample rack into the sample injection area, and use the push mechanism to push the sample rack into the sample injection inlet; The hook rack mechanism moves the sample rack at the sampling inlet to the sampling station for sampling; After sampling, the sample rack is moved from the sampling station to the buffer area by the hook rack mechanism; When the sample rack in the buffer area needs to be retested, the hook rack mechanism moves the retest sample rack from the buffer area to the sampling station for sampling. After the sampling is completed, the retest sample rack is moved by the hook rack mechanism from the sampling station to the buffer area for caching.

[0021] Preferably, the sample rack in the buffer area that is determined to be unnecessary to be retested is moved to the recovery position by the hook rack mechanism and pushed out from the recovery position by the push-out mechanism.

[0022] Preferably, when the emergency sample is inserted into the sample rack cache tray in the cache area through the emergency insertion channel, the sample rack cache tray slides in a moving direction perpendicular to the hook rack mechanism, so that the emergency insertion channel and the recovery position are located in the same straight line, and the hook rack mechanism takes out the emergency sample rack from the emergency insertion channel, and transports it to the sampling station through the recovery position for sampling. After the sampling is completed, the emergency sample rack is transported by the hook rack mechanism from the sampling station to the cache in the cache area.

[0023] The present invention sets up a buffer area for caching samples after sampling. When samples need to be retested, the cached samples are dispatched from the buffer area for retesting; only samples that do not need to be retested are moved to the recycling area for recycling. The low-cost retesting function of samples can be realized without a large number of reaction cups; not only the amount of reaction cups used is saved, the user's use cost is reduced, but also the amount of samples used is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the sample analysis system of the present invention; Figure 2 for Figure 1 A top view of Figure 3 for Figure 1 Bottom view of Figure 4 The structure of the hook mechanism of the present invention is shown in FIG. Figure 1 ; Figure 5 The structure of the hook mechanism of the present invention is shown in FIG. Figure 2 ; Figure 6 It is a structural schematic diagram of the hook rack mechanism of the present invention after removing the hook driving plate and the position sensor; Figure 7 It is a structural schematic diagram of the hook driving plate of the present invention; Figure 8 A bottom view of the sample holder of the present invention; Fig. 9 It is a structural schematic diagram of the pushing mechanism of the present invention. Implementation

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention, and the parts not mentioned in the present invention are all prior art. The technical solutions provided by the embodiments of the present invention are described in detail below in conjunction with the drawings.

[0026] See also Figures 1 to 3 The present invention provides a sample analysis system, including a sample injection area 1, a sampling station 11, a recovery area 4, a buffer area 8, a push mechanism 2, a push mechanism 5 and a hook rack mechanism 3. A reagent bottle 10 is provided on one side of the sampling station 11 for placing reagents required in the sample analysis process. The sample injection area 1 is provided with a sample injection inlet 1-1, and the push mechanism 2 is used to push the sample rack 9 of the sample injection area 1 into the sample injection inlet 1-1; the recovery area 4 is provided with a recovery position 4-1, and the push mechanism 5 is used to push the sample rack of the recovery position 4-1 out; the buffer area 8 is used to cache samples after sampling; the hook rack mechanism 3 is used to move the sample rack between the sample injection inlet 1-1, the sampling station 11, the recovery position 4-1 and the buffer area 8.

[0027] Furthermore, the sampling area 1, the sampling station 11, the recovery area 4, and the buffer area 8 are arranged in sequence, and the hook frame mechanism 3 can move along the length direction of the sampling area 1, the sampling station 11, the recovery area 4, and the buffer area 8, and the sampling inlet 1-1, the sampling station 11, the recovery position 4-1 and the buffer area 8 are all within the moving path of the hook frame mechanism 3.

[0028] Furthermore, the buffer area 8 includes a bracket 8-1, a driving unit 8-4, a slide rail 8-3, a conveyor belt 8-2, and a sample rack buffer tray 8-5 arranged on the bracket, the slide rail 8-3 is perpendicular to the moving direction of the hook rack mechanism 3, the sample rack buffer tray 8-5 is slidably connected to the slide rail 8-3, the sample rack buffer tray 8-5 is fixedly connected to the conveyor belt 8-2, and the conveyor belt 8-2 is transmission-connected to the driving unit 8-4; the driving unit 8-4 drives the conveyor belt 8-2 to move, driving the sample rack buffer tray 8-5 to slide along the slide rail 8-3. The sample rack buffer tray 8-5 is provided with a plurality of mutually parallel sample rack placement channels 8-6, and the sample rack buffer tray 8-5 can slide in a direction perpendicular to the moving direction of the hook rack mechanism 3, so as to facilitate the dispatching of the sample rack in any sample rack placement channel 8-6 ​​from the buffer area 8 to the recovery position 4-1 or the sampling station 11.

[0029] Furthermore, an emergency insertion channel 7 is provided on one side of the sample rack buffer tray 8-5, and its insertion direction is shown in FIG. Figure 2 As shown by the arrow on the left, the emergency function is realized, which is convenient for testing emergency samples first. In order to realize the emergency function, some existing sample analysis systems set up a separate emergency channel, which is costly and has a larger overall size; the present invention sets the emergency insertion channel 7 on the sample rack buffer tray 8-5, which is low in cost and more compact in structure.

[0030] For further information, see Figures 4 to 7 The hook rack mechanism 3 includes a bracket 3-6, a rack hook and a driving mechanism arranged on the bracket 3-6, wherein the rack hook includes two hook body units 3-4 arranged symmetrically, and the driving mechanism drives the two hook body units 3-4 to rise or fall synchronously to hook or release the sample rack 9. Figure 8 The bottom of the sample rack 9 is provided with a groove 9-1 corresponding to the two hook units 3-4. The groove 9-1 at the bottom of the sample rack 9 and the retractable hook unit 3-4 are used to effectively utilize the space at the bottom, making the structure more compact, improving space utilization and saving costs.

[0031] Furthermore, when the two hook units 3 - 4 rise synchronously, their tops can be opened relative to each other to hook the sample rack 9 , and when the two hook units 3 - 4 fall synchronously, their tops can be closed relative to each other to release the sample rack 9 .

[0032] Furthermore, when the two hook units 3-4 rise synchronously to the open state, their tops are in an inverted eight-shaped shape, which is used to hook the sample rack 9 and can drive the sample rack 9 to move smoothly in two directions. When the two hook units 3-4 fall synchronously to the closed state, their tops are close to each other, and when the two hook units 3-4 extend from the bracket 3-6, they can easily enter the groove 9-1 at the bottom of the sample rack 9.

[0033] Furthermore, the bracket 3-6 is provided with a guide slot 3-5 and a hook driving plate 3-7, and the hook driving plate 3-7 is provided with a strip slot 3-9, and the two hook units 3-4 can move along the guide slot 3-5 and the strip slot 3-9 at the same time, and the driving mechanism drives the hook driving plate 3-7 to move up and down, thereby driving the two hook units 3-4 to rise or fall synchronously. The guide slot 3-5 guides the moving direction of the two hook units 3-4, and the strip slot 3-9 is used for the hook driving plate 3-7 to drive the two hook units 3-4 to rise or fall synchronously.

[0034] Furthermore, the two hook units 3-4 are rotatably connected to the bracket 3-6 on the side away from each other through the rotating shaft 3-11, and the bottom of the hook unit 3-4 is connected with a sliding shaft 3-10, and the sliding shaft 3-10 is embedded in the guide groove 3-5 and the strip groove 3-9 at the same time; after adopting the above structure, the two hook units 3-4 can move along the guide groove 3-5 and the strip groove 3-9 at the same time, which is not only simple in structure but also low in cost.

[0035] Furthermore, the bracket 3-6 is provided with an anti-slip plate 3-3, and a receiving cavity (not shown) is formed between the anti-slip plate 3-3 and the bracket 3-6, and the two hook units 3-4 are embedded in the receiving cavity. The two hook units 3-4 are arranged in the receiving cavity, so that the two hook units 3-4 are more secure when they rise or fall.

[0036] Furthermore, the guide slots 3-5 include two, which correspond one to one with the two hook units 3-4, and the two guide slots 3-5 are arranged in an eight-shaped shape.

[0037] Furthermore, the driving mechanism includes a screw motor 3-1, a screw 3-15 and a screw nut 3-2. The screw motor 3-1 is connected to the screw 3-15 in transmission, the screw nut 2 is sleeved on the screw 3-15, and the hook driving plate 3-7 is connected to the screw nut 3-2; the screw motor 3-1 drives the screw 3-15 to rotate, so that the screw nut 3-2 moves along the screw 3-15 to drive the hook driving plate 3-7 to move up and down.

[0038] For further information, see Figure 5 and Figure 7A horizontal extension portion 3-12 is provided on one side of the hook driving plate 3-7, and a vertical extension portion 3-13 is provided on the other side thereof. A guide rail 3-8 is provided on the bracket 3-6, and the guide rail 3-8 guides the up and down movement of the hook driving plate 3-7. The horizontal extension portion 3-12 of the hook driving plate 3-7 is connected to the lead screw nut 3-2, and the vertical extension portion 3-13 is slidably connected to the guide rail 3-8; the lead screw motor 3-1 drives the lead screw 3-15 to rotate, so that the lead screw nut 3-2 moves along the lead screw 3-15 to drive the hook driving plate 3-7 to slide up and down along the guide rail 3-8; the above structure is adopted to make the structure more compact.

[0039] Furthermore, a position sensor 3-14 is also provided on the bracket 3-6 for detecting the moving distance of the hook driving plate 3-7 and determining whether the two hook units 3-4 have descended into place when they descend synchronously.

[0040] See also Figure 1 The sample analysis system of the present invention is also provided with a synchronous belt drive assembly 6 extending along the length direction of the sampling area 1, the sampling station 11, the recovery area 4, and the buffer area 8. The hook frame mechanism 3 is transmission-connected with the synchronous belt drive assembly 6. The synchronous belt drive assembly 6 drives the hook frame mechanism 3 to move along the length direction of the sampling area 1, the sampling station 11, the recovery area 4, and the buffer area 8. The synchronous belt drive assembly 6 adopts a common structure in this field and is not described in detail here.

[0041] For further information, see Fig. 9 The pushing mechanism 2 includes a support frame 2-1, a first guide rail 2-2, a first synchronous belt 2-3, a first driving mechanism 2-6 and a pushing bar 2-5 arranged on the support frame 2-1, and the first guide rail 2-2 is parallel to the pushing direction of the sample rack ( Figure 2 The direction indicated by the arrow on the right is the sample rack push-in direction). The push bar 2-5 is slidably connected to the first guide rail 2-2, and the push bar 2-5 is fixedly connected to the first synchronous belt 2-3. The first synchronous belt 2-3 is transmission-connected to the first driving mechanism 2-6. The two ends of the push bar 2-5 are symmetrically provided with abutment parts 2-4 for contacting with the sample rack 9. The first driving mechanism 2-6 drives the first synchronous belt 2-3 to move, driving the push bar 2-5 to reciprocate along the sample rack push-in direction. After adopting the above structure, when the sample rack needs to be pushed from the sample injection area 1 into the sample injection inlet 1-1, the first driving mechanism 2-6 drives the first synchronous belt 2-3 to move, driving the push bar 2-5 to move along the sample rack push-in direction; the symmetrically arranged abutment parts 2-4 abut against the two ends of the sample rack, pushing the sample rack from the sample injection area 1 into the sample injection inlet 1-1, and pushing the sample rack from the two ends of the sample rack, so that the sample rack can be pushed in more smoothly, and the sample is prevented from splashing out of the sample rack.

[0042] For further information, see Figure 2 and Figure 3The ejection mechanism 5 includes a second driving mechanism (not shown), a second guide rail 5-3, a second synchronous belt 5-2, and an ejection plate 5-1. The second guide rail 5-3 and the second synchronous belt 5-2 are both arranged on the bottom plate 12. The second guide rail 5-3 is parallel to the ejection direction of the sample rack ( Figure 2 The direction indicated by the arrow on the upper side is the sample rack push-out direction). The push-out plate 5-1 is slidably connected to the second guide rail 5-3, and the push-out plate 5-1 is fixedly connected to the second synchronous belt 5-2. The second synchronous belt 5-2 is transmission-connected to the second driving mechanism. The second driving mechanism drives the second synchronous belt 5-2 to drive the push-out plate 5-1 to reciprocate along the sample rack push-out direction. When the sample rack needs to be pushed out from the recovery position 4-1 to the recovery tray 4-2, the second driving mechanism drives the second synchronous belt 5-2 to move, driving the push-out plate 5-1 to move along the sample rack push-out direction, thereby pushing out the sample rack on the recovery position 4-1.

[0043] The present invention also relates to a scheduling method for the sample analysis system, comprising the following steps: placing a sample rack into a sampling area 1, and pushing the sample rack into a sampling inlet 1-1 by a pushing mechanism 2; the hook rack mechanism 3 moves the sample rack at the sampling inlet 1-1 to a sampling station 11 for sampling; after sampling, the sample rack is moved by the hook rack mechanism 3 from the sampling station 11 to a cache in a buffer area 8; when the sample rack in the buffer area 8 needs to be re-tested, the driving unit 8-4 drives the sample rack cache tray 8-5 to slide along a moving direction perpendicular to the hook rack mechanism 3, so that the sample rack placement channel 8-6 ​​of the re-tested sample rack is located in the same straight line as the recovery position 4-1, and the hook rack mechanism 3 is driven to move the re-tested sample rack from the buffer area 8 to the sampling station 11 for sampling, and after sampling, the re-tested sample rack is moved by the hook rack mechanism 3 from the sampling station 11 to the cache in the buffer area 8.

[0044] Furthermore, the sample racks in the buffer area 8 that are determined not to need retesting are moved to the recovery position 4 - 1 by the hook rack mechanism 3 , and the pushing mechanism 5 pushes the sample racks in the recovery position 4 - 1 onto the recovery tray 4 - 2 .

[0045] Furthermore, when the emergency sample in the cache area 8 is inserted into the sample rack cache tray in the cache area through the emergency insertion channel, the driving unit 8-4 drives the sample rack cache tray 8-5 to slide along the moving direction perpendicular to the hook rack mechanism 3, so that the emergency insertion channel 7 and the recovery position 4-1 are located in the same straight line, and drives the hook rack mechanism 3 to take out the emergency sample rack from the emergency insertion channel 7, and transport it to the sampling station 11 through the recovery position 4-1 to sample the emergency sample rack. After the sampling is completed, the emergency sample rack is transported by the hook rack mechanism 3 from the sampling station 11 to the cache in the cache area 8.

[0046] The specific workflow of the present invention is as follows: 1. Place the sample rack 9 in the sample inlet 1. The first drive mechanism 2-6 drives the first synchronous belt 2-3 to move, driving the push bar 2-5 to move along the sample rack push direction, and pushing the sample rack from the sample inlet 1 to the sample inlet 1-1. At this time, the two hook units 3-4 of the hook rack mechanism 3 are in a retracted state, that is, the two hook units 3-4 do not protrude from the anti-slip pressure plate 3-3. The synchronous belt drive assembly 6 drives the hook rack mechanism 3 to move to the bottom of the sample rack in the sample inlet 1-1. The drive mechanism drives the hook drive plate 3-7 to move upward, thereby driving the two hook units 3-4 to rise synchronously. By driving the two slide shafts 3-10 to move upward along the guide groove 3-5, the two hook units 3-4 protrude from the anti-slip pressure plate 3-3 and hook the groove 9-1 at the bottom of the sample rack 9. The synchronous belt drive assembly 6 drives the hook frame mechanism 3 to hook the sample rack and move it to the sampling station 11. After the sampling is completed, the synchronous belt drive assembly 6 drives the hook frame mechanism 3 to hook the sample rack and move it to the sample rack placement channel 8-6 ​​of the buffer area 8 for buffering. The drive mechanism drives the rack hook drive plate 3-7 to move downward, thereby driving the two hook body units 3-4 to descend synchronously until the two hook body units 3-4 are in a retracted state. The synchronous belt drive assembly 6 drives the hook frame mechanism 3 to move below the sample inlet 1-1, waiting for the next sample rack to enter.

[0047] 2. When the samples on the sample rack in the buffer area 8 need to be retested, the driving unit 8-4 drives the sample rack cache tray 8-5 to slide along the moving direction perpendicular to the hook rack mechanism 3, so that the sample rack placement channel 8-6 ​​of the retest sample rack is in the same straight line as the recovery position 4-1. After the two hook units 3-4 on the hook rack mechanism 3 are folded, the hook rack mechanism 3 is driven to move to the bottom of the retest sample rack, and the driving mechanism 3-1 drives the two hook units 3-4 to protrude the anti-slip pressure plate 3-3, hook the groove 9-1 at the bottom of the retest sample rack, and drive the hook rack mechanism 3 to hook the retest sample rack and move it to the sampling station 11 for sampling. After the sampling is completed, the synchronous belt drive assembly 6 drives the hook rack mechanism 3 to hook the retest sample rack and move it to the sample rack placement channel 8-6 ​​of the buffer area 8 for temporary storage. If the system determines that the retest sample does not need to be retested, the hook rack mechanism 3 is driven to move the retest sample rack from the buffer area 8 to the recovery position 4-1. After the hook rack mechanism 3 is driven to retract the two hook units 3-4, the second driving mechanism drives the second synchronous belt 5-2 to move, driving the push-out plate 5-1 to move along the sample rack push-out direction, thereby pushing the retest sample rack on the recovery position 4-1 onto the recovery tray 4-2.

[0048] 3. After the emergency insertion channel 7 is placed in the emergency sample rack, the driving unit 8-4 drives the sample rack buffer tray 8-5 to slide along the moving direction perpendicular to the hook rack mechanism 3, so that the emergency insertion channel 7 and the recovery position 4-1 are in the same straight line, and the synchronous belt driving component 6 drives the hook rack mechanism 3 to move to the bottom of the emergency sample rack, and preferentially moves the emergency sample rack to the sampling station 11 for sampling. After the sampling is completed, the emergency sample rack is moved from the sampling station 11 to the buffer area 8 by the hook rack mechanism 3. If the system determines that the emergency sample does not need to be retested, the hook rack mechanism 3 moves the emergency sample rack from the buffer area 8 to the recovery position 4-1, and after driving the hook rack mechanism 3 to retract the two hook units 3-4, the second driving mechanism drives the second synchronous belt 5-2 to move, driving the push plate 5-1 to move along the sample rack push direction, thereby pushing the emergency sample rack on the recovery position 4-1 onto the recovery tray 4-2.

[0049] The present invention adopts a push-in mechanism, a push-out mechanism and a hook rack mechanism to realize the functions of scheduling, caching, emergency and retesting of the sample rack, and can realize the low-cost retesting function of the sample without a large number of reaction cups; it not only saves the amount of reaction cups and reduces the user's use cost, but also saves the amount of sample used. The present invention cleverly uses the groove at the bottom of the sample rack and the retractable hook unit, effectively utilizes the space at the bottom of the channel, makes the structure more compact, improves space utilization and saves costs; the buffer area of ​​the present invention can complete the caching of samples, thereby realizing the low-cost retesting function of samples; the present invention sets an emergency position on the buffer area, realizes the emergency function, and improves space utilization.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sample analysis system, characterized in that It includes a sampling area, a sampling station, a recovery area, a buffer area, a push-in mechanism, a push-out mechanism and a hook frame mechanism. The sample injection area is provided with a sample injection inlet, and the pushing mechanism is used to push the sample rack of the sample injection area into the sample injection inlet; The recycling area is provided with a recycling position, and the pushing mechanism is used to push the sample rack at the recycling position into the recycling area; The buffer area is used to cache the sample rack after sampling is completed; The hook rack mechanism is used to drive the sample rack to move between the sampling inlet, the sampling station, the recovery station and the buffer area.

2. The sample analysis system according to claim 1, characterized in that: The sampling area, sampling station, recovery area, and buffer area are arranged in sequence, and the hook frame mechanism can move along the length direction of the sampling area, sampling station, recovery area, and buffer area. The sampling inlet, sampling station, recovery station, and buffer area are all within the moving path of the hook frame mechanism.

3. The sample analysis system according to claim 1 or 2, characterized in that: A slidable sample rack cache tray is provided in the cache area, and its sliding direction is perpendicular to the moving direction of the hook rack mechanism.

4. The sample analysis system according to claim 3, characterized in that: The buffer area is also provided with an emergency insertion channel located on one side of the sample rack buffer tray, which is used to insert the emergency sample rack into the sample rack buffer tray.

5. The sample analysis system according to claim 1, characterized in that: The hook rack mechanism comprises a rack, a rack hook arranged on the rack and a driving mechanism. The driving mechanism drives the rack hook to rise or fall so as to hook or release the sample rack.

6. The sample analysis system according to claim 5, characterized in that: The rack hook includes two symmetrically arranged hook units. When the two hook units rise synchronously, their tops can be opened relative to each other to hook the sample rack. When the two hook units fall synchronously, their tops can be closed relative to each other to release the sample rack.

7. The sample analysis system according to claim 5 or 6, characterized in that: The bracket is provided with a guide slot and a hook driving plate, and the hook driving plate is provided with a strip slot. The two hook units can move along the guide slot and the strip slot at the same time, and the driving mechanism drives the hook driving plate to move up and down, thereby driving the two hook units to rise or fall synchronously.

8. The sample analysis system according to claim 7, characterized in that: The two hook units are rotatably connected to the bracket at the sides away from each other, and the bottoms of the hook units are connected with sliding shafts, which are embedded in the guide sliding grooves and the strip grooves at the same time.

9. The sample analysis system according to claim 7, characterized in that: The driving mechanism includes a screw motor, a screw and a screw nut. The screw motor is connected to the screw in a transmission manner. The screw nut is sleeved on the screw. The hook driving plate is connected to the screw nut. The screw motor drives the screw to rotate, so that the screw nut moves along the screw and drives the hook driving plate to move up and down.

10. The sample analysis system according to claim 1, characterized in that: The pushing mechanism includes a support frame, a first driving mechanism and a pushing bar arranged on the support frame, and abutment parts for contacting the sample rack are symmetrically arranged at both ends of the pushing bar. The first driving mechanism drives the pushing bar to reciprocate along the pushing direction of the sample rack.

11. The sample analysis system according to claim 1, characterized in that: The push-out mechanism comprises a second driving mechanism and a push-out plate for pushing out the sample rack at the recovery position, and the second driving mechanism drives the push-out plate to reciprocate along the sample rack push-out direction.

12. A scheduling method for a sample analysis system, characterized in that: The steps include: Place the sample rack into the sample injection area, and use the push mechanism to push the sample rack into the sample injection inlet; The hook rack mechanism moves the sample rack at the sampling inlet to the sampling station for sampling; After sampling, the sample rack is moved from the sampling station to the buffer area by the hook rack mechanism; When the sample rack in the buffer area needs to be retested, the hook rack mechanism moves the retest sample rack from the buffer area to the sampling station for sampling. After the sampling is completed, the retest sample rack is moved by the hook rack mechanism from the sampling station to the buffer area for caching.

13. The scheduling method of the sample analysis system according to claim 12, characterized in that: The sample rack in the buffer area that is determined not to need retesting is moved to the recovery position by the hook rack mechanism and pushed out from the recovery position by the push mechanism.

14. The scheduling method of the sample analysis system according to claim 13, characterized in that: When the emergency sample is inserted into the sample rack cache tray in the cache area through the emergency insertion channel, the sample rack cache tray slides in a moving direction perpendicular to the hook rack mechanism, so that the emergency insertion channel and the recovery position are in the same straight line. The hook rack mechanism takes out the emergency sample rack from the emergency insertion channel, and transports it to the sampling station through the recovery position for sampling. After the sampling is completed, the emergency sample rack is transported by the hook rack mechanism from the sampling station to the cache in the cache area.

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