CN204789042U - A motion acupuncture treatment mechanism for full -automatic immune quantitative analysis appearance - Google Patents

Abstract

The utility model discloses a moving needling mechanism for a full-automatic immune quantitative analyzer, which comprises a needling base on which at least one sampling needle is slidably installed, and a driving device is installed on the needling base. The needle driving motor for the sampling needle to move up and down vertically, the sampling needle is covered with a negative pressure sleeve, the upper end of the negative pressure sleeve is connected to the atmosphere, and the lower end of the negative pressure sleeve is a needle port structure. Automatic sampling is realized through the addition of a needle driving motor; at the same time, by adding a negative pressure sleeve outside the sampling needle, the problem of negative pressure formed inside the blood collection tube during the sampling process is solved, thus realizing smooth sampling without removing the cap the goal of. Suitable for sampling of biological samples.

Description

Kinetic Needle Pricking Mechanism Used in Automatic Quantitative Immunity Analyzer

technical field

The utility model relates to a needling mechanism, in particular to a moving needling mechanism for a fully automatic immune quantitative analyzer.

Background technique

At present, point-of-care detection (POCT) has been widely used in the field of reagent detection technology at home and abroad because of its simplicity and rapidity. Among them, the automatic quantitative immunoassay analyzer is the most commonly used instant detector based on the use of plane scanning detection, but the movement needle mechanism in the existing automatic quantitative immune analyzer has the following problems in actual use:

When sampling, because the inside of the blood collection tube is a sealed space, you cannot directly use the sampling needle to pierce the sample (during the sampling process, the inside of the blood collection tube will form a negative pressure, which will affect the sampling), and the sealing cap on the blood collection tube must be pulled out first. off before sampling can be performed.

Contents of the invention

The purpose of the utility model is to overcome the deficiency of the above-mentioned background technology, and provide a movement needle mechanism for a full-automatic immune quantitative analyzer without removing the cover.

In order to achieve the above objectives, the utility model provides a motion needle mechanism for a fully automatic immune quantitative analyzer, comprising a needle base on which at least one sampling needle is slidably installed, and the needle base A needle driving motor that drives the sampling needle to move vertically up and down is installed on the top, and the outer cover of the sampling needle is equipped with a negative pressure removal sleeve, the upper end of the negative pressure removal sleeve communicates with the atmosphere, and the lower end of the negative pressure removal sleeve is Needle structure. Automatic sampling is realized through the addition of a needle driving motor; at the same time, by adding a negative pressure sleeve outside the sampling needle, the problem of negative pressure formed inside the blood collection tube during the sampling process is solved, thus realizing smooth sampling without removing the cap the goal of.

In the above solution, the sampling needle is slidably installed on the needle base through a screw nut, and the output end of the needle driving motor is connected with a screw rod matched with the screw nut, and the screw rod is inserted into the Installed in the screw nut. The automatic sampling function is realized by adopting the structure of the needle driving motor and the screw rod and the screw nut, the structure is simple, the operation is convenient and the cost is low.

In the above solution, the needle pricking base is provided with a linear bearing for the linear movement of the needle pricking mechanism.

In the above solution, the needle pricking base is also provided with a precision guide support slider for precise guidance of the needle pricking mechanism.

The beneficial effects brought by the technical solution provided by the utility model are:

1. Automatic sampling is realized through the additional needle driving motor;

2. By adding a negative pressure sleeve outside the sampling needle, the problem of negative pressure formed inside the blood collection tube during the sampling process is solved, so as to achieve the purpose of smooth sampling without removing the cap;

3. The automatic sampling function is realized by adopting the structure of the needling driving motor and the screw rod and the screw nut. The structure is simple, the operation is convenient and the cost is low.

Compared with the prior art, the utility model fully demonstrates its advantages in that it realizes automation, simple structure, convenient operation, high efficiency, low cost and smooth sampling without removing the cover.

Description of drawings

Fig. 1 is the oblique structure schematic diagram of embodiment;

Fig. 2 is another oblique structural schematic diagram of the embodiment;

Fig. 3 is a top view structural diagram when both the centrifugal turntable mechanism and the detection card moving mechanism of the embodiment are extended;

Fig. 4 is the oblique structural schematic diagram of centrifugal turntable mechanism;

Fig. 5 is a structural schematic diagram when Fig. 4 is stretched out;

Fig. 6 is a schematic cross-sectional structure diagram of Fig. 4;

Fig. 7 is a schematic structural view after removing the top plate of the protective cover in Fig. 4;

Fig. 8 is a schematic structural view of Fig. 7 after removing the fixed cover;

Fig. 9 is a schematic structural view of Fig. 8 after removing the protective cover and the handle;

Figure 10 is an assembly drawing of the fixed cover and the insertion platform;

Fig. 11 is a structural schematic diagram of a fixed cover;

Figure 12 is a schematic structural view of the insertion station;

Fig. 13 is a structural schematic diagram of the moving needle pricking mechanism;

Fig. 14 is a structural schematic diagram when the moving needle pricking mechanism is stretched out;

Fig. 15 is a side view structural schematic diagram of Fig. 13;

Fig. 16 is a side view structural schematic diagram of Fig. 14;

Fig. 17 is a schematic cross-sectional structure diagram of Fig. 13;

Fig. 18 is an assembly drawing of the detection card moving mechanism and the scanning mechanism;

Fig. 19 is a structural schematic diagram of another viewing angle of Fig. 18;

Fig. 20 is a schematic top view of Fig. 18;

Fig. 21 is a schematic cross-sectional structure diagram along line A-A in Fig. 20;

Fig. 22 is a schematic diagram of the structure when Fig. 20 is stretched out and loaded into the detection card;

Fig. 23 is a schematic diagram of the structure when Fig. 22 is retracted;

Fig. 24 is a schematic structural diagram of the first row of detection cards when scanning;

Fig. 25 is a schematic structural diagram when the first row of detection cards is disengaged;

Fig. 26 is a schematic diagram of the oblique view of the scanning mechanism;

Fig. 27 is another oblique structural schematic diagram of the scanning mechanism;

Fig. 28 is a schematic diagram of the oblique view of the needle washing mechanism;

Fig. 29 is another oblique structural schematic diagram of the needle washing mechanism;

Figure 30 is a schematic cross-sectional structure diagram of the needle washing mechanism;

Fig. 31 is a schematic diagram of another cross-sectional structure of the needle washing mechanism;

Fig. 32 is a schematic block diagram of the liquid circuit system of the instrument.

In the figure: centrifugal turntable mechanism 1, centrifugal motor 1a, insertion seat 1b, fixed cover 1c, blood collection tube detection device 1d, shaft coupling 1e, locking screw 1f, insertion platform 1g, protective cover 1h, centrifugal base 1i , fixed installation shell 1j, precise fixed electromagnet 1k, precision slide rail 1m, guide slide rail 1n, handle 1p, centrifugal heat conduction fan 1q, moving needling mechanism 2, needling base 2a, sampling needle 2b, needling driving motor 2c, go Negative pressure sleeve 2d, screw nut 2e, screw rod 2f, sample transfer mechanism 3, sample transfer motor 3a, sample transfer pulley 3b, sample transfer belt 3c, linear bearing 3d, linear guide rod 3e, precision guide support slider 3f , precision linear slide rail 3g, detection card moving mechanism 4, support frame 4a, upper movable plate 4b, lower movable plate 4c, accommodation groove 4d, upper slide rail 4e, lower slide rail 4f, upper movable motor 4g, lower movable motor 4h , upper pulley 4j, lower pulley 4k, upper transmission belt 4m, lower transmission belt 4n, drop hole 4p, scanning mechanism 5, scanning base 5a, scanning assembly 5b, scanning moving motor 5c, scanning pulley 5d, scanning transmission belt 5e , outrigger 5f, needle washing mechanism 6, housing 6a, needle washing chamber 6b, waste liquid outflow chamber 6c, liquid circuit control mechanism 7, washing liquid container 7a, liquid suction pump 7b, sampling pump 7c, sampling valve 7d, washing Needle pump 7e, waste container 7f, instrument rack 8.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the utility model.

In actual application, this sports acupuncture mechanism can form a fully automatic immunological quantitative analyzer together with other mechanisms, as follows:

As shown in Figure 1: this embodiment provides a fully automatic immunoassay analyzer, including a centrifugal turntable mechanism 1 for fixing the blood collection tube and centrifuging the sample in the blood collection tube; a moving needle mechanism 2 for Pumping and dripping the centrifuged sample in the blood collection tube; the sample transfer mechanism 3 is used to move the moving needle mechanism 2 with the sample to the top of the detection card moving mechanism 4; the detection card moving mechanism 4, It is used to place the detection card and move the detection card dripped with the sample to the detection station; the scanning mechanism 5 is used to scan the detection card located on the detection station and output the scanning result; the needle washing mechanism 6. It is used to clean the sampling needle of the moving needle pricking mechanism 2; the liquid circuit control mechanism 7 is used to control the liquid flow of the whole machine.

First, the centrifugation of the sample in the instrument is realized through the centrifugal turntable mechanism 1, and then the automatic and accurate quantitative sampling of the sample is realized through the moving needle mechanism 2, and then the quantitative sample obtained by sampling is moved to the detection card through the sample transfer mechanism 3 Drop the precisely quantitative sample onto the test card, and then move the test card with the sample dropped to the bottom of the scanning mechanism 5 through the test card moving mechanism 4. After scanning and outputting the results, the test card moving mechanism 4 will complete the detection The detection card is automatically disengaged, and finally the sampling needle of the moving needle pricking mechanism 2 is cleaned by the needle washing mechanism 6, thereby completing the whole operation. The whole operation does not require manual intervention, and the fully automatic operation is realized, thereby greatly improving the efficiency. Of course, if the sample does not need to be centrifuged, after the sample is inserted into the centrifugal turntable mechanism 1, no centrifugation operation is required, and the moving needle pricking mechanism 2 can be directly used for sampling.

The above-mentioned centrifugal turntable mechanism 1 includes a centrifugal motor 1a, one end of the rotating shaft of the centrifugal motor 1a is connected with an insertion seat 1b for inserting a blood collection tube, and the insertion seat 1b is equipped with a The fixed cover 1c in the insertion seat 1b, the other end of the rotating shaft of the centrifugal motor 1a is equipped with a blood collection tube detection device 1d for detecting the position of the blood collection tube in the insertion seat 1b, and the blood collection tube is vertically inserted in the In the socket 1b mentioned above. By arranging the blood collection tube vertically, the automatic sampling of the sampling needle can be realized, thereby improving the efficiency and reducing the labor cost.

The blood collection tube detection device 1d is an encoder; the rotating shaft of the centrifugal motor 1a is fixedly connected to the insertion seat 1b through a shaft coupling 1e. The rotating shaft of the centrifugal motor 1a and the insertion seat 1b are transitionally connected through the shaft coupling 1e, which facilitates the assembly of each component and provides convenience for later maintenance.

The fixed cover 1c is a disc-shaped structure, and the fixed cover 1c is provided with a through hole matching the port diameter of the blood collection tube along the circumferential direction, and the fixed cover 1c is installed by a locking screw 1f vertically arranged in the center On the top surface of the insertion seat 1b; between the fixed cover 1c and the insertion seat 1b, there is an insertion platform 1g for inserting and fixing a longer blood collection tube, and the insertion platform 1g is a cylinder The insertion table 1g is provided with an insertion hole arranged vertically along the circumferential direction, and the inner diameter of the insertion hole matches the outer diameter of the longer blood collection tube. The fixing of the fixed cover 1c is realized by adopting the vertically arranged locking screws 1f, which is simple and firm, low in cost and high in reliability; the insertion and fixing of longer blood collection tubes is realized by the additional insertion platform 1g , so that there is no need to replace the entire receptacle 1b, the cost is reduced and the operation is simple and convenient. Of course, the insertion table 1g and the fixed cover 1c can also be designed as an integral structure, so that when a longer blood collection tube needs to be inserted, the fixed cover 1c with the insertion table 1g is selected for use, and when a shorter blood collection tube is inserted, The fixed cover 1c that does not have the insertion platform 1g is selected for use and gets final product.

The periphery of the above-mentioned centrifugal motor 1a and the insertion seat 1b is provided with a protective cover 1h with an opening at one end, and a centrifugal base 1i is slidably installed on the bottom plate of the protective cover 1h, and the centrifugal motor 1a is fixedly installed on the On the centrifuge base 1i, a blood sampling hole for the insertion of a sampling needle is provided on the top plate of the protective cover 1h at a position corresponding to the insertion seat 1b. The additional protective cover 1h can effectively avoid potential safety hazards during high-speed centrifugation and improve the safety level of the mechanism.

The position corresponding to the fixed cover 1c on the top plate of the above-mentioned protective cover 1h is provided with a screw avoidance groove for avoiding the locking screw 1f, and the bottom plate of the protective cover 1h is provided for avoiding the detection of the blood collection tube detection device 1d. Device escape groove, the rotating shaft of the centrifugal motor 1a passes through the centrifugal base 1i and extends out of the protective cover 1h to connect with the blood collection tube detection device 1d. A precision fixing electromagnet 1k for fixing the centrifugal base 1i is provided at the position corresponding to the end of the centrifugal base 1i on the protective cover 1h. The added precisely fixed electromagnet 1k can effectively prevent the centrifugal base 1i from moving and shaking during the high-speed centrifugation process, thereby improving the stability and reliability of the mechanism and reducing the noise of the mechanism.

The bottom plate of the centrifugal base 1i and the bottom plate of the protective cover 1h are slidably connected by a precision slide rail 1m, and guides are respectively provided between the two sides of the centrifugal base 1i and the two sides of the protective cover 1h. Rail 1n. By designing the slide rail between the bottom plate of the centrifugal base 1i and the bottom plate of the protective cover 1h as a precision slide rail 1m, this can effectively improve the accuracy of the sliding of the centrifugal base 1i, thereby improving the detection accuracy of the instrument; at the same time, By adding guide rails 1n between the two sides of the centrifugal base 1i corresponding to the two sides of the protective cover 1h, the smoothness of sliding of the centrifugal base 1i is improved and the noise of the mechanism is also reduced. A handle 1p is provided on the centrifugal base 1i corresponding to the opening end of the protective cover 1h, and centrifugal heat conduction fans 1q for heat dissipation are respectively provided on both sides of the protective cover 1h. The added handle 1p facilitates the operation of the operator, and the added centrifugal heat conduction fan 1q can quickly dissipate the heat generated by the centrifugal motor 1a, thereby improving the service life of the centrifugal motor 1a.

The number of blood collection tubes that can be inserted into the insertion base 1b at one time is at least two, so that simultaneous centrifugation of multiple samples can be realized at one time, which provides conditions for high-throughput cross-detection of multiple samples at one time.

The above-mentioned detection card moving mechanism 4 includes a support frame 4a, and an upper layer moving plate 4b and a lower layer moving plate 4c are respectively slidably stacked on the support frame 4a, and the lower layer moving plate 4c is located below the upper layer moving plate 4b. The mobile plate 4b is provided with a leakage hole matched with the outer contour size of the detection card, and the leakage hole and the lower moving plate 4c form an accommodating groove 4d for accommodating the detection card, and the support frame 4a A drop hole 4p for dropping the test card is provided on the top. The placement, movement and removal of the detection card is realized by adopting the structure of the upper movable plate 4b and the lower movable plate 4c which are stacked together and can slide relatively. The structure is simple, the operation is convenient, the efficiency is high and the cost is low.

The above-mentioned upper floor mobile plate 4b is slidably installed on the support frame 4a by the upper floor slide rail 4e, and the described lower floor mobile plate 4c is slidably installed on the support frame 4a by the lower floor slide rail 4f, and the upper floor slide rail 4e and the lower floor slide rail 4f The difference in height is equal to or greater than the thickness of the lower moving plate 4c. By designing the height difference between the upper slide rail 4e and the lower slide rail 4f to be equal to or greater than the thickness of the lower movable plate 4c, interference between the upper movable plate 4b and the lower movable plate 4c can be avoided.

One end of the support frame 4a is provided with an upper moving motor 4g for driving the sliding of the upper movable plate 4b, and the other end of the support frame 4a is provided with an upper pulley 4j matched with the upper moving motor 4g. The output end of the motor 4g is driven and connected with the upper pulley 4j through the upper transmission belt 4m, and the upper transmission belt 4m is fixedly connected with the upper movable plate 4b; Sliding lower moving motor 4h, the other end of the support frame 4a is provided with a lower pulley 4k matched with the lower moving motor 4h, and the output end of the lower moving motor 4h is connected to the lower pulley through the lower transmission belt 4n 4k is transmission connected, and the lower transmission belt 4n is fixedly connected with the lower moving plate 4c.

The above-mentioned upper moving motor 4g and the upper pulley 4j are all located above the upper moving plate 4b, and the lower moving motor 4h and the lower pulley 4k are all located below the lower moving plate 4c; the upper moving plate The width of one end of 4b is greater than the width of the corresponding end of the lower moving plate 4c, and the upper moving motor 4g and the upper pulley 4j are arranged on the side exceeding the lower moving plate 4c in the corresponding width direction of the upper moving plate 4b . By designing the width of one end of the upper movable plate 4b to be greater than the width of the corresponding end of the lower movable plate 4c, this facilitates the arrangement and installation of the upper movable motor 4g and the upper pulley 4j, and also facilitates later maintenance.

The two upper slide rails 4e are respectively arranged on the support frame 4a corresponding to the positions on both sides of the bottom surface of the upper movable plate 4b, and the two lower slide rails 4f are respectively arranged on the support frame 4a corresponding to the two sides of the bottom surface of the upper movable plate 4b. The position on both sides of the bottom surface of the lower moving plate 4c, the two lower sliding rails 4f are located between the two upper sliding rails 4e. By arranging the two upper slide rails 4e respectively on the support frame 4a corresponding to the positions on both sides of the bottom surface of the upper movable plate 4b, and respectively arranging the two lower slide rails 4f on the support frame 4a corresponding to the positions on both sides of the bottom surface of the lower movable plate 4c position, and then arrange the two lower slide rails 4f between the two upper slide rails 4e, which facilitates the installation of the upper slide rails 4e and the lower slide rails 4f, and is also conducive to later maintenance.

The width of the end of the above-mentioned upper floor mobile plate 4b that is provided with the leakage hole is consistent with the width of the lower floor mobile plate 4c, and the width of the other end of the upper floor mobile plate 4b is greater than the width of the lower floor mobile plate 4c. The moving plate 4c is a square plate with the same width at both ends. By being provided with the width of an end of leak hole by the upper strata movable plate 4b, be designed to be consistent with the width of the lower floor movable plate 4c, and the width of the other end of the upper strata movable plate 4b is designed to be greater than the width of the lower floor movable plate 4c, like this, convenient When the upper slide rail 4e and the lower slide rail 4f are installed, the size of the upper movable plate 4b can be reduced as much as possible, thereby reducing the size of the part of the upper movable plate 4b and the lower movable plate 4c protruding from the supporting frame 4a, and reducing the size of the upper movable plate 4b and the lower moving plate 4c extend out of the occupied space of the instrument, which facilitates the operation of the operator.

The number of the above-mentioned accommodating grooves 4d is at least two, and the plurality of accommodating grooves 4d are arranged in at least one row; the upper slide rail 4e and the lower slide rail 4f are precision slide rails. By arranging the holding tanks 4d in multiple rows, high-throughput cross-detection of multiple samples can be satisfied at one time, and the detection efficiency is improved. By designing the upper slide rail 4e and the lower slide rail 4f as precision slide rails, the movement accuracy of the upper slide rail 4e and the lower slide rail 4f is improved, thereby improving the detection accuracy of the instrument.

The above-mentioned scanning mechanism 5 includes a scanning base 5a on which a scanning assembly 5b is slidably installed, the scanning part of the scanning assembly 5b faces downwards, and one end of the scanning base 5a is provided for driving the scanning assembly. 5b sliding scanning moving motor 5c, the other end of the scanning base 5a is provided with a scanning pulley 5d matched with the scanning moving motor 5c, and the output end of the scanning moving motor 5c is connected to the scanning belt 5e through the scanning transmission belt 5e. The pulley 5d is connected in transmission, and the scanning transmission belt 5e is fixedly connected with the scanning assembly 5b. The movement of the scanning assembly 5b is realized by the transmission of the scanning moving motor 5c and the scanning pulley 5d, so that a high-throughput cross detection that can satisfy multiple samples at one time can be realized, and the detection efficiency is improved. The scanning base 5a is mounted on the support frame 4a through legs 5f, and the scanning part of the scanning assembly 5b is located above the upper moving plate 4b.

Through the cooperative movement of the detection card moving mechanism 4 and the scanning mechanism 5, the one-time detection of 3*6=18 detection items is realized, the efficiency is very high, and the detected image does not have the problem of edge distortion. However, the existing single-point CCD imaging method has the problem that the detection channel is too small. If a single-channel detection is used, the detection efficiency is low; at the same time, the existing 3*6=18 detection items, although it can be used at one time Imaging, but there is a problem of image edge distortion.

The above-mentioned needle washing mechanism 6 includes a housing 6a, the housing 6a is provided with needle washing chambers 6b in the same number as the number of the sampling needles 2b, and the needle mouth slope of the needle washing chamber 6b facing the sampling needles 2b The inner wall of the housing 6a is arc-shaped, and a waste liquid outflow chamber 6c matching with the needle washing chamber 6b is also provided in the housing 6a. The side walls communicate, the bottom of the waste liquid outflow chamber 6c communicates with the output port of the housing 6a, and the side of the upper port of the needle washing chamber 6b communicates with the input port of the housing 6a. By designing the inner wall of the needle washing chamber 6b towards the inclined surface of the sampling needle 2b as an arc-shaped structure, the cleaning liquid that has cleaned the inner wall of the sampling needle 2b will flush back upwards at the arc-shaped structure, thereby improving the sampling efficiency. The outer wall of the needle 2b can also be cleaned, thereby increasing the number of times the outer wall of the sampling needle 2b is washed, and at the same time can appropriately save the running time of the instrument and the amount of cleaning liquid; at the same time, by using the waste liquid outflow chamber 6c instead of directly The scheme of opening a waste liquid outflow port at the bottom of the needle washing chamber 6b makes the effect of flushing back upwards of the cleaning liquid better.

The above-mentioned moving needling mechanism 2 includes a needling base 2a, on which at least one sampling needle 2b is slidably mounted, and a needling drive for driving the sampling needle 2b to move vertically up and down is installed on the needling base 2a. The motor 2c, the sampling needle 2b is covered with a negative pressure removal sleeve 2d, the upper end of the negative pressure removal sleeve 2d communicates with the atmosphere, and the lower end of the negative pressure removal sleeve 2d is a needle port structure. Automatic sampling is realized by the additional needle driving motor 2c; at the same time, by adding a negative pressure sleeve 2d outside the sampling needle 2b, the problem that negative pressure will be formed inside the blood collection tube during the sampling process is solved, thereby realizing the need for removing the cover. Can be smoothly sampled for the purpose. The sampling needle 2b is slidably mounted on the needle base 2a through a screw nut 2e, and the output end of the needle driving motor 2c is connected with a screw rod 2f matched with the screw nut 2e, the screw rod 2f is inserted into the screw nut 2e. The automatic sampling function is realized by adopting the structure of the needling driving motor 2c cooperating with the screw rod 2f and the screw nut 2e, and the structure is simple, the operation is convenient and the cost is low.

The instrument also includes an instrument rack 8 for installing the centrifugal turntable mechanism 1, the moving needle pricking mechanism 2, the sample transfer mechanism 3, the detection card moving mechanism 4, the scanning mechanism 5, the needle washing mechanism 6, and the liquid circuit control mechanism 7. The needle washing mechanism 6 is arranged on one side of the instrument frame 8, the detection card moving mechanism 4 is arranged on the other side of the instrument frame 8, and the centrifugal turntable mechanism 1 is arranged between the needle washing mechanism 6 and the Between the detection card moving mechanism 4, the moving needle pricking mechanism 2 is horizontally movable and installed on the instrument frame 8 through the sample transfer mechanism 3. In the initial position, the moving needle pricking mechanism 2 is located in the needle washing mechanism 6, and the needle washing mechanism 6 is located on the same line as the centrifugal turntable mechanism 1, and the scanning mechanism 5 is located above the detection card moving mechanism 4. The sample transfer mechanism 3 includes a sample transfer motor 3a and a sample transfer pulley 3b that cooperate with each other, the sample transfer motor 3a is installed on one end of the upper part of the instrument frame 8, and the sample transfer pulley 3b is installed on the instrument The other end of the upper part of the frame 8, the output end of the sample transfer motor 3a is connected to the sample transfer pulley 3b through the sample transfer belt 3c, and the sample transfer belt 3c is fixedly connected to the needle base 2a. The needle base 2a is provided with a linear bearing 3d, and the upper part of the instrument frame 8 is horizontally equipped with a linear guide rod 3e matching the linear bearing 3d, and the linear bearing 3d is sleeved on the linear guide rod 3e. The needle base 2a is also provided with a precision guide support slider 3f, and the upper part of the instrument frame 8 is also horizontally equipped with a precision linear slide rail 3g matched with the precision guide support slider 3f, and the precision guide support slide The block 3f is slidably installed on the precision linear slide rail 3g.

By adopting the combination structure of the guide rod and the slide rail, in this way, in the actual process of needle insertion force, the linear bearing and the linear guide rod form a whole-circumferential torsional tension, which facilitates the stability of the mechanism and good stress; at the same time, the precision linear slide Rails make the overall installation of the needling mechanism easy, and form a torsion and vertical support force, which facilitates the smooth operation of the heavy-duty needling mechanism, increases the service life of the needling mechanism, and increases the reliability and operation quality of the mechanism.

The above-mentioned liquid path control mechanism 7 includes a washing liquid container 7a, a sampling pump 7c, a sampling valve 7d, a needle washing pump 7e and a waste liquid container 7f, the washing liquid container 7a communicates with the input port of the sampling pump 7c, and the sampling The output port of the pump 7c communicates with the sampling needle 2b through the sampling valve 7d, the washing liquid container 7a also communicates with the input port of the needle washing pump 7e, and the output port of the needle washing pump 7e communicates with the The input port of the needle washing mechanism 6 is connected, and the output port of the needle washing mechanism 6 is connected with the waste liquid container 7f. Through the mutual cooperation between the sampling pump 7c and the sampling valve 7d, the automatic collection of the sample is realized, thereby improving the efficiency; at the same time, through the mutual cooperation between the sampling pump 7c and the sampling valve 7d, the inner wall of the sampling needle 2b can also be realized. Automatic cleaning; moreover, through the cooperation of the needle washing pump 7e and the needle washing mechanism 6, the automatic cleaning of the outer wall of the sampling needle 2b is realized. A liquid suction pump 7b is provided between the washing liquid container 7a and the sampling pump 7c.

Of course, a liquid level sensor valve can be set in the washing liquid container 7a and the waste liquid container 7f, and through the timing control of the circuit and software, the replenishment of the cleaning liquid in the prompt washing liquid container 7a and the replacement of the waste liquid container 7f are realized; all of the above All liquid circuit system mechanisms need to perform pipeline liquid perfusion, suction and discharge, liquid flow, and accurate quantitative collection and discharge of liquid through a certain sequence.

The working process of this instrument is as follows:

First, the operator selects a different type of fixed cover 1c according to the length of the blood collection tube. After the selection, the centrifugal base 1i is pulled out through the handle 1p, and the blood collection tube is inserted into the insertion seat 1b, and then fixed with the fixed cover 1c. After completion, push the centrifugal base 1i back to its original position; then, control the detection card moving mechanism 4 to extend the upper movable plate 4b and the lower movable plate 4c at the same time, and put the corresponding detection card in the accommodating groove 4d, and put it away Afterwards, the upper moving plate 4b and the lower moving plate 4c return to their positions at the same time; at this time, the instrument can be turned on. After the instrument is turned on, the centrifugal motor 1a is first controlled to rotate to start the centrifugal operation. After the centrifugal operation is completed, the sample transfer mechanism 3 will move the needle Mechanism 2 moves to directly above the blood collection tube; after the moving needle pricking mechanism 2 moves in place, the blood collection tube is positioned through the encoder, and then the corresponding needle pricking drive motor 2c is controlled to drive the corresponding sampling needle 2b to pierce into the corresponding blood collection tube downward, and through the sampling The pump 7c draws a quantitative sample. After the sample is taken, the sampling needle 2b returns to its original position, and then starts the sampling of the next blood collection tube, and so on, until all the sampling needles 2b are extracted; then, the sample transfer mechanism 3 will The moving needle pricking mechanism 2 moves to the position of the detection card, and drops each sample in the sampling needle 2b on the first row of detection cards; The first row of test cards dripped with samples moves to the test station; then, the scanning mechanism 5 starts to scan each test card on the first row of test cards respectively, and displays the results on the display screen; Simultaneously after the sampling is completed, the moving needle pricking mechanism 2 returns to the initial position, and then controls all the sampling needles 2b to be respectively inserted into the corresponding needle washing chambers 6b, and the liquid suction pump 7b pumps the cleaning liquid into the sampling pump 7c, and then the sampling needles The pump 7c pumps the cleaning liquid into each sampling needle 2b to complete the cleaning of the inner wall of each sampling needle 2b. At the same time, the needle washing pump 7e also pumps the cleaning liquid into each needle washing chamber 6b to complete the cleaning of the outer wall of each sampling needle 2b. After cleaning, each sampling needle 2b returns to the initial position; so far, the detection of the first row of detection cards is completed, the detection process of the second row of detection cards and the third row of detection cards is cycled like this, and all detection cards are detected (insert sockets) After the samples in the blood collection tubes in 1b have been detected correspondingly), the lower movable plate 4c returns first, and the first row of detection cards, the second row of detection cards and the third row of detection cards complete the automatic detection in turn under the action of gravity. The card release action realizes the automatic recovery of discarded detection cards; finally, the upper movable plate 4b can be returned to its position.

The utility model first realizes the centrifugation of the sample in the instrument through the centrifugal turntable mechanism 1, then realizes the automatic and accurate quantitative sampling of the sample through the moving needle mechanism 2, and then moves the quantitative sample obtained by sampling through the sample transfer mechanism 3 Go to the top of the test card and drop the accurately quantitative sample on the test card, then move the test card with the sample dripped on the test card to the bottom of the scanning mechanism 5 through the test card moving mechanism 4, after scanning and outputting the results, the test card moving mechanism 4 The detected detection card is automatically removed, and finally the sampling needle of the moving needle pricking mechanism 2 is cleaned by the needle washing mechanism 6, so as to complete the whole operation. The whole operation does not require manual intervention, realizing fully automatic operation, thereby greatly improving efficiency;

By arranging the blood collection tube vertically, the automatic sampling of the sampling needle can be realized, thereby improving the efficiency and reducing the labor cost; the rotating shaft of the centrifugal motor 1a and the insertion seat 1b are transitionally connected through the coupling 1e, which is convenient The assembly of each component also provides convenience for later maintenance; the fixed cover 1c is fixed by adopting vertically arranged locking screws 1f, which is simple and firm, low in cost and high in reliability; The insertion table 1g realizes the insertion and fixation of a longer blood collection tube, so that there is no need to replace the entire insertion seat 1b, which reduces the cost and is simple and convenient to operate; the additional protective cover 1h can effectively avoid the safety hazards that exist during high-speed centrifugation. Hidden dangers improve the safety level of this mechanism; through the addition of precisely fixed electromagnet 1k, it can effectively prevent the centrifugal base 1i from moving and shaking during high-speed centrifugation, thereby improving the stability and reliability of this mechanism. It is beneficial to reduce the noise of this mechanism; by designing the slide rail between the bottom plate of the centrifugal base 1i and the bottom plate of the protective cover 1h as a precision slide rail 1m, this can effectively improve the sliding accuracy of the centrifugal base 1i, thereby improving The detection accuracy of the instrument; by adding guide rails 1n between the two sides of the centrifugal base 1i corresponding to the two sides of the protective cover 1h, this improves the sliding stability of the centrifugal base 1i and is also conducive to reducing the Noise; the added handle 1p facilitates the operation of the operator, and the added centrifugal heat conduction fan 1q can quickly dissipate the heat generated by the centrifugal motor 1a, thereby improving the service life of the centrifugal motor 1a; The number of blood collection tubes that can be inserted into the seat 1b at one time is at least two, so that simultaneous centrifugation of multiple samples can be realized at one time, which provides conditions for multiple samples to complete high-throughput cross detection at one time;

By adopting the structure of the upper movable plate 4b and the lower movable plate 4c which are stacked together and can slide relatively, the placement, movement and de-carding of the detection card are realized, the structure is simple, the operation is convenient, the efficiency is high and the cost is low; The height difference between slide rail 4e and lower floor slide rail 4f is designed to be equal to or greater than the thickness of lower floor movable plate 4c, can avoid like this interference between upper floor movable plate 4b and lower floor movable plate 4c; By designing the width of upper floor movable plate 4b one end Be larger than the width of the corresponding end of the lower moving plate 4c, which is convenient for the arrangement and installation of the upper moving motor 4g and the upper pulley 4j, and also facilitates the maintenance in the later stage; by arranging the two upper slide rails 4e respectively on the support frame 4a corresponding to the upper Move the positions on both sides of the bottom surface of the moving plate 4b, and arrange the two lower slide rails 4f on the support frame 4a corresponding to the positions on both sides of the bottom surface of the lower movable plate 4c, and then arrange the two lower slide rails 4f on the two upper slide rails 4e, which facilitates the installation of the upper slide rail 4e and the lower slide rail 4f, and also facilitates later maintenance; by designing the width of the end of the upper movable plate 4b with the leak hole to be consistent with the width of the lower movable plate 4c , and the width of the other end of the upper movable plate 4b is designed to be greater than the width of the lower movable plate 4c, so that while facilitating the installation of the upper slide rail 4e and the lower slide rail 4f, the size of the upper movable plate 4b can be reduced as much as possible, thereby reducing The size of the part where the upper movable plate 4b and the lower movable plate 4c protrude from the support frame 4a is reduced, the space occupied by the upper movable plate 4b and the lower movable plate 4c protruding from the instrument is reduced, and the operation of the operator is facilitated; Arranged in multiple rows, this can meet the high-throughput cross-detection of multiple samples at one time, and improve the detection efficiency; by designing the upper slide rail 4e and the lower slide rail 4f as precision slide rails, this improves the efficiency of the upper slide rail 4e and the lower slide rail. The movement accuracy of the slide rail 4f improves the detection accuracy of the instrument;

The movement of the scanning assembly 5b is realized by the transmission of the scanning moving motor 5c and the scanning pulley 5d, so that a high-throughput cross detection that can satisfy multiple samples at one time can be realized, and the detection efficiency is improved;

By designing the inner wall of the needle washing chamber 6b towards the inclined surface of the sampling needle 2b as an arc-shaped structure, the cleaning liquid that has cleaned the inner wall of the sampling needle 2b will flush back upwards at the arc-shaped structure, thereby improving the sampling efficiency. The outer wall of the needle 2b can also be cleaned, thereby increasing the number of washings of the outer wall of the sampling needle 2b, and at the same time can appropriately save the running time of the instrument and the amount of cleaning liquid; The bottom of chamber 6b is equipped with a waste liquid outflow port, which makes the effect of cleaning liquid flushing upwards better;

Automatic sampling is realized by the additional needle driving motor 2c; at the same time, by adding a negative pressure sleeve 2d outside the sampling needle 2b, the problem that negative pressure will be formed inside the blood collection tube during the sampling process is solved, thereby realizing the need for removing the cover. The purpose of smooth sampling; by adopting the structure of the needle driving motor 2c in cooperation with the screw 2f and the screw nut 2e, the automatic sampling function is realized, the structure is simple, the operation is convenient and the cost is low;

By adopting the combination structure of the guide rod and the slide rail, in this way, in the actual process of needle insertion force, the linear bearing and the linear guide rod form a whole-circumferential torsional tension, which facilitates the stability of the mechanism and good stress; at the same time, the precision linear slide rails, so that the needle mechanism is easy to install as a whole, and forms a torsion and vertical support force, which facilitates the smooth operation of the heavy-duty needle mechanism, increases the service life of the needle mechanism, and increases the reliability and operation quality of the mechanism;

Through the mutual cooperation between the sampling pump 7c and the sampling valve 7d, the automatic collection of the sample is realized, thereby improving the efficiency; at the same time, through the mutual cooperation between the sampling pump 7c and the sampling valve 7d, the inner wall of the sampling needle 2b can also be realized. Automatic cleaning; moreover, through the cooperation of the needle washing pump 7e and the needle washing mechanism 6, the automatic cleaning of the outer wall of the sampling needle 2b is realized.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. A motion needle pricking mechanism for a full-automatic immune quantitative analyzer, characterized in that: it comprises a needle pricking base (2a), and at least one sampling needle (2b) is slidably installed on said pricking needle base (2a), A needle driving motor (2c) that drives the sampling needle (2b) to move vertically up and down is installed on the needle base (2a), and a negative pressure sleeve (2d) is placed on the outer cover of the sampling needle (2b). The upper end of the negative pressure removal sleeve (2d) communicates with the atmosphere, and the lower end of the negative pressure removal sleeve (2d) is a needle port structure. 2. The motion needle pricking mechanism for a full-automatic immune quantitative analyzer as claimed in claim 1, characterized in that: said sampling needle (2b) is slidably mounted on said pricking needle base (2a) by a screw nut (2e) ), the output end of the needle driving motor (2c) is connected with a screw rod (2f) matched with the screw nut (2e), and the screw rod (2f) is inserted in the screw nut ( 2e). 3. The moving needle sticking mechanism for a fully automatic immunoassay quantitative analyzer according to claim 1, characterized in that: the needle sticking base (2a) is provided with a linear bearing (3d) for the linear movement of the needle sticking mechanism. 4. The motion acupuncture mechanism for automatic quantitative immunoassay analyzer as claimed in claim 3, characterized in that: the needle base (2a) is also provided with a precision guide support slider for the precise guidance of the needle mechanism (3f).