CN221860013U - Medical detection device, sample application mechanism and sample application assembly - Google Patents

Abstract

The present application relates to a medical detection device, a spotting mechanism and a spotting component, the spotting component comprising: a sampling needle and an auxiliary needle. There is at least one sampling needle, the sampling needle comprises a needle tube, a needle push rod and a sampling needle connected to the needle tube, the first end of the needle push rod can be movably inserted into the needle tube, the second end of the needle push rod extends to the outside of the needle tube and is used to be connected to the push-pull mechanism. There is at least one auxiliary needle, the auxiliary needle is arranged corresponding to the sampling needle and is detachably connected. In the above-mentioned spotting component, during the spotting process, the liquid sample does not need to enter the original sampling needle of the sampling needle, but enters the auxiliary needle, which can avoid contamination of the sampling needle; when it is needed for spotting operations of other liquids, the auxiliary needle can be replaced, which can reduce cross contamination and improve spotting efficiency. At the same time, since there is no need to replace the more expensive sampling needle, the cost can be reduced.

Description

Medical testing device, sample spotting mechanism and sample spotting component

Technical Field

The present application relates to the technical field of medical devices, and in particular to a medical detection device, a spotting mechanism and a spotting component.

Background Art

Medical testing devices, including but not limited to nucleic acid mass spectrometers, are generally provided with a spotting structure. The spotting mechanism is provided with a sampling needle that can absorb liquid samples. When spotting, the sampling needle is immersed in the sample liquid to dip a small amount of liquid sample, and then the sampling needle moves to contact the solid substrate, so that the liquid sample is transferred from the sampling needle to the solid substrate surface of the test platform. However, different types of liquid samples have different adhesion to the sampling needle, and the effect when dipping the sample is also different, which requires the structure and material of the sampling needle to meet the requirements of sample adhesion, and the sampling needle cost is relatively high. In addition, when dipping different samples, using the same sampling needle is prone to cross-contamination of multiple samples, and the cleaning process is cumbersome and difficult, resulting in low efficiency.

Summary of the invention

Based on this, it is necessary to overcome the defects of the prior art and provide a medical detection device, a spotting mechanism and a spotting component, which can reduce cross contamination, improve spotting efficiency and reduce costs.

A spotting component, comprising:

A sampling needle, wherein at least one sampling needle is provided, and the sampling needle comprises a needle tube, a needle push rod, and a sampling needle head connected to the needle tube, wherein the first end of the needle push rod is movably inserted into the needle tube, and the second end of the needle push rod extends out of the needle tube and is used to be connected to a push-pull mechanism; and

Auxiliary needle, the auxiliary needle is provided as at least one, and the auxiliary needle is arranged corresponding to the sampling needle and is detachably connected.

In one embodiment, the auxiliary needle is a low-adsorption tip.

In one embodiment, the sample spotting assembly also includes a first sealing ring, a second sealing ring and a third sealing ring; the auxiliary needle is sleeved on the outside of the sampling needle, and the first sealing ring is arranged between the inner wall of the auxiliary needle and the outer wall of the sampling needle; the second sealing ring is sleeved on the outside of the first end of the needle push rod, and the second sealing ring abuts against the inner wall of the needle tube; the sampling needle is sleeved on the outside of the needle tube, and the third sealing ring is arranged between the inner wall of the sampling needle and the outer wall of the needle tube.

In one embodiment, the sample spotting assembly further includes a fourth sealing ring; the fourth sealing ring is mounted on the inner wall of the needle tube and sleeved on the outside of the needle push rod to seal and abut against the outer wall of the needle push rod.

In one embodiment, the sampling needle and the auxiliary needle are both provided in plurality, and each sampling needle is correspondingly connected to each auxiliary needle; the spotting assembly further comprises a mounting seat, and each sampling needle is installed on the mounting seat at intervals.

In one embodiment, the spotting assembly further comprises a push plate, which is respectively connected to the second end of each of the needle push rods, and is also used to be connected to the push-pull mechanism;

The mounting seat is provided with a mounting channel corresponding to the sampling needle, the sampling needle is inserted into the mounting channel, the spotting assembly further comprises a fifth sealing ring and a sixth sealing ring, the fifth sealing ring is sleeved and mounted on an end of the needle tube away from the sampling needle head, the fifth sealing ring is also tightly abutted against the inner wall of the mounting channel, the sixth sealing ring is sleeved and mounted on the outside of the sampling needle head, the sixth sealing ring is also tightly abutted against the inner wall of the mounting channel;

The mounting seat also includes a first clamping plate detachably arranged on its bottom surface, and a second clamping plate detachably arranged on the top surface; the sampling needle passes through the first clamping plate and extends to the outside of the mounting seat, and the first clamping plate and the steps on the side wall of the sampling needle abut against each other; the second end of the needle push rod passes through the second clamping plate and extends to the outside of the mounting seat, and the end of the needle tube away from the sampling needle abuts against the second clamping plate.

A spotting mechanism comprises the spotting component, a bracket and a push-pull mechanism; the spotting component and the push-pull mechanism are both mounted on the bracket, and the push-pull mechanism is connected to the second end of the needle push rod.

In one embodiment, the push-pull mechanism includes a drive motor, a screw, a moving block, a nut and a guide assembly. The drive motor is installed on the bracket, the rotating shaft of the drive motor is connected to the screw, the nut is sleeved on the screw, and the nut is also connected to the moving block. The moving block is connected to the bracket through the guide assembly, and the guiding direction of the guide assembly is parallel to the axial direction of the screw.

In one embodiment, the spotting mechanism further includes a position detection component, the position detection component is used to detect the lifting height of the moving block, and the position detection component is electrically connected to the push-pull mechanism;

The spotting mechanism further includes a position calibrator, which is used to detect the position of the moving block, and the position calibrator is electrically connected to the push-pull mechanism.

A medical detection device, the medical detection device comprising the sample spotting mechanism

In the above-mentioned medical detection device, spotting mechanism and spotting assembly, during the spotting process, the liquid sample does not need to enter the original sampling needle of the sampling needle, but enters the auxiliary needle, which can avoid contamination of the sampling needle; when it is needed for spotting operations of other liquids, the auxiliary needle can be replaced, which can reduce cross contamination and improve spotting efficiency. At the same time, since there is no need to replace the more expensive sampling needle, the cost can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a spotting component according to an embodiment of the present application.

FIG. 2 is a cross-sectional structural diagram of the structure shown in FIG. 1 .

FIG. 3 is a top view of the structure shown in FIG. 1 .

FIG. 4 is a structural diagram of the sampling needle and the auxiliary needle in the structure shown in FIG. 1 .

FIG. 5 is a cross-sectional structural diagram of the structure shown in FIG. 4 .

FIG. 6 is an enlarged schematic diagram of the structure at point A in FIG. 5 .

FIG. 7 is an enlarged structural schematic diagram of FIG. 5 at point B. FIG.

FIG. 8 is a schematic structural diagram of a spotting mechanism according to an embodiment of the present application.

FIG. 9 is a schematic structural diagram of the bracket in the structure shown in FIG. 8 .

FIG. 10 is a schematic diagram of the structure of the push-pull mechanism, the position detection assembly and the position calibrator in the structure shown in FIG. 8 .

10. Sample spotting assembly; 11. Sampling needle; 111. Needle tube; 112. Needle push rod; 1121. Connecting part; 113. Sampling needle; 12. Auxiliary needle; 13. First sealing ring; 14. Second sealing ring; 15. Third sealing ring; 16. Fourth sealing ring; 17. Mounting seat; 171. First clamping plate; 172. Second clamping plate; 18. Pushing plate; 181. Concave part; 191. Fifth sealing ring; 192. Six sealing rings; 20, push-pull mechanism; 21, drive motor; 22, lead screw; 23, moving block; 24, nut; 25, guide assembly; 251, guide rail; 252, slider; 26, motor seat; 27, bearing seat; 28, coupling; 30, bracket; 40, position detection assembly; 41, grating disk reading terminal; 42, grating code disk; 50, position calibrator; 51, photoelectric switch; 52, trigger; 60, camera.

DETAILED DESCRIPTION

In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

Referring to FIG. 1 and FIG. 2 , FIG. 1 shows a schematic diagram of the structure of a spotting component 10 according to an embodiment of the present application. FIG. 2 shows a cross-sectional structural diagram of the structure shown in FIG. 1 . A spotting component 10 provided in an embodiment of the present application comprises: a sampling needle 11 and an auxiliary needle 12. The sampling needle 11 is provided as at least one, and the sampling needle 11 comprises a needle tube 111, a needle push rod 112 and a sampling needle 113 connected to the needle tube 111. The first end of the needle push rod 112 is movably inserted into the needle tube 111, and the second end of the needle push rod 112 extends to the outside of the needle tube 111 and is used to be connected to the push-pull mechanism 20. The auxiliary needle 12 is provided as at least one, and the auxiliary needle 12 is correspondingly arranged with the sampling needle 113 and is detachably connected.

Among them, when the sample spotting is working, the needle push rod 112 moves in the direction away from the auxiliary needle 12 under the drive of the push-pull mechanism 20, so that the liquid sample at the sampling position can be sucked into the inside of the auxiliary needle 12, and then the auxiliary needle 12 is driven to move to the sample spotting position, and the needle push rod 112 moves in the direction close to the auxiliary needle 12 under the drive of the push-pull mechanism 20, so that the liquid sample inside the auxiliary needle 12 can be squeezed outward to the sample spotting position, and the sample spotting position is, for example, a platform target holder.

In the above-mentioned spotting component 10, during the spotting process, the liquid sample does not need to enter the original sampling needle 113 of the sampling needle 11, but enters the auxiliary needle 12, which can avoid contamination of the sampling needle 113; when it is needed to be used for spotting operations of other liquids, the auxiliary needle 12 can be replaced, which can reduce cross contamination and improve spotting efficiency. At the same time, since there is no need to replace the more expensive sampling needle 113, the cost can be reduced.

In some embodiments, the auxiliary needle 12 can accommodate a liquid sample in an amount including but not limited to 5 μl to 50 μl, which can be flexibly adjusted and set according to actual needs.

In some embodiments, the first end of the needle push rod 112 is inserted into the needle tube 111 and is flush with the end of the needle tube 111. This can prevent the needle push rod 112 from contacting the sampling needle 113 and the auxiliary needle 12, thereby avoiding contamination caused by contact with the auxiliary needle 12 and effectively reducing the risk of cross contamination.

In one embodiment, the auxiliary needle 12 includes but is not limited to a low-absorption suction tip. In this way, when sucking a liquid with a low surface tension, the liquid can easily slide down from the inner surface of the auxiliary needle 12, thereby leaving very little residual liquid in the auxiliary needle 12.

Please refer to Figures 4 to 7. Figure 4 shows a structural diagram of the sampling needle 11 and the auxiliary needle 12 in the structure shown in Figure 1. Figure 5 shows a cross-sectional structural diagram of the structure shown in Figure 4. Figure 6 shows an enlarged structural schematic diagram of Figure 5 at A. Figure 7 shows an enlarged structural schematic diagram of Figure 5 at B. In some embodiments, the sample spotting assembly 10 further includes a first sealing ring 13, a second sealing ring 14 and a third sealing ring 15. The auxiliary needle 12 is sleeved on the outside of the sampling needle 113. The first sealing ring 13 is arranged between the inner wall of the auxiliary needle 12 and the outer wall of the sampling needle 113, and plays a sealing role to prevent external gas from entering the inside of the auxiliary needle 12. In addition, the second sealing ring 14 is sleeved on the outside of the first end of the needle push rod 112, and the second sealing ring 14 is abutted against the inner wall of the needle tube 111. When the needle push rod 112 drives the second sealing ring 14 installed thereon to move upward, a negative pressure is generated inside the auxiliary needle 12, and the liquid sample can be sucked into the inside of the auxiliary needle 12. In addition, the sampling needle 113 is sleeved on the outside of the needle tube 111, and the third sealing ring 15 is arranged between the inner wall of the sampling needle 113 and the outer wall of the needle tube 111, which plays a sealing role and can prevent external gas from entering the auxiliary needle 12. In this way, adding sealing rings to each connection of the spotting component 10 can improve the airtightness of each connection, so that the auxiliary needle 12 has a sufficiently large vacuum degree. After extracting the liquid sample, the liquid sample can be stably maintained in the sampling needle 113, preventing the liquid sample from dripping uncontrollably during the movement of the spotting component 10.

In some embodiments, the first sealing ring 13, the second sealing ring 14, and the third sealing ring 15 are independently set, and the specific number of each includes but is not limited to one, two, three or other numbers, which can be flexibly adjusted and set according to actual needs.

Please refer to FIG. 5 to FIG. 7 . In one embodiment, the spotting assembly 10 further includes a fourth sealing ring 16. The fourth sealing ring 16 is mounted on the inner wall of the needle tube 111 and is sleeved on the outside of the needle push rod 112 to seal against the outer wall of the needle push rod 112. In this way, the fourth sealing ring 16 can further improve the airtightness between the outer wall of the needle push rod 112 and the inner wall of the needle tube 111, preventing external gas from entering the inside of the needle tube 111. In this way, when extracting a liquid sample, the vacuum degree inside the auxiliary needle 12 is large enough to keep the liquid sample inside in a static state.

In some embodiments, the number of the fourth sealing ring 16 includes but is not limited to one, two or more, and is specifically arranged at the top of the needle tube 111, that is, one end away from the auxiliary needle 12, so that it is convenient for the installation operation of the fourth sealing ring 16; of course, the fourth sealing ring 16 can also be arranged at any other position of the needle tube 111 according to actual needs, which is not limited here.

Please refer to Figures 1 to 3. In one embodiment, the sampling needle 113 and the auxiliary needle 12 are both provided in plurality, and each sampling needle 113 is correspondingly connected to each auxiliary needle 12. The spotting assembly 10 also includes a mounting seat 17, and each sampling needle 11 is installed on the mounting seat 17 at intervals. In this way, the auxiliary needle 12 is not just one, but is provided in plurality and correspondingly connected to a plurality of sampling needles 113, which can meet the needs of extracting different liquid samples at one time, and the extracted liquid samples can all be retained on the auxiliary needle 12. In addition, each sampling needle 11 is assembled together through the mounting seat 17.

In some embodiments, when there are multiple sampling needles 11, the second ends of the needle push rods 112 can be connected to a corresponding push-pull mechanism 20, so that the sampling work of each sampling needle 11 can be carried out independently without affecting each other; or they can be connected to a common push-pull structure, so that the sampling work of each sampling needle 11 can be carried out synchronously, which can improve work efficiency; they can also be arranged in other matching ratios with the push-pull mechanism 20, which is not limited here and can be flexibly adjusted and arranged according to actual needs.

Referring to FIGS. 1 to 3 , in one embodiment, the sample spotting assembly 10 further includes a push plate 18. The push plate 18 is respectively connected to the second end of each needle push rod 112, and the push plate 18 is also used to be connected to the push-pull mechanism 20. In this way, under the drive of the push-pull mechanism 20, the push plate 18 is driven to move up and down, and the push plate 18 correspondingly drives each needle push rod 112 to move up and down synchronously, so as to realize the sample spotting action of each sampling needle 11.

Please refer to FIG. 1 to FIG. 3. In some embodiments, the second end of the needle push rod 112 is provided with a connecting portion 1121. The connecting portion 1121 is connected to the push plate 18. The outer contour size of the connecting portion 1121 is larger than the outer contour size of the main structure of the needle push rod 112. The connecting portion 1121 is stably connected to the push plate 18 because of its large enough volume size. The outer contour size of the main structure of the needle push rod 112 is designed to be small enough, for example, a slender rod body, so that it can be inserted into the needle tube 111, and when it is driven by the connecting portion 1121 to move upward for a distance, it can achieve accurate control of the amount of liquid sample absorbed, so that the amount of liquid sample absorbed can reach, for example, microliters.

Please refer to Figures 1 to 3. In some embodiments, the push plate 18 is provided with a recess 181 that is adapted to the shape of the connecting portion 1121. The connecting portion 1121 is disposed in the recess 181. The main structure of the needle push rod 112 passes through the bottom wall of the recess 181 and extends into the interior of the needle tube 111. In this way, it is convenient to assemble each needle push rod 112 onto the push portion. In addition, the push-pull mechanism 20 is provided with, for example, a moving block 23, which is connected to the top surface of the push plate 18. The moving block 23 is pressed against each connecting portion 1121 at the same time, so that each connecting portion 1121 is firmly disposed on the push plate 18.

Please refer to Figures 1 to 3. In some embodiments, the mounting seat 17 is provided with a mounting channel corresponding to the sampling needle 11, and the sampling needle 11 is inserted into the mounting channel. In addition, please refer to Figures 5 to 7. The spotting assembly 10 also includes a fifth sealing ring 191 and a sixth sealing ring 192. The fifth sealing ring 191 is sleeved and mounted on the end of the needle tube 111 away from the sampling needle 113, and the fifth sealing ring 191 is also tightly abutted against the inner wall of the mounting channel. The sixth sealing ring 192 is sleeved and mounted on the outside of the sampling needle 113, and the sixth sealing ring 192 is also tightly abutted against the inner wall of the mounting channel. In this way, under the sealing effect of the fifth sealing ring 191 and the sixth sealing ring 192, external gas can be prevented from entering the interior of the sampling needle 113, so that when extracting the liquid sample, the vacuum degree inside the auxiliary needle 12 is large enough to keep the internal liquid sample in a static state.

Please refer to FIG. 2 . In some embodiments, the mounting seat 17 further includes a first pressing plate 171 detachably disposed on the bottom surface thereof, and a second pressing plate 172 detachably disposed on the top surface thereof. The sampling needle 113 penetrates the first pressing plate 171 and extends to the outside of the mounting seat 17 . The first pressing plate 171 and the steps on the side wall of the sampling needle 113 abut against each other. The second end of the needle push rod 112 penetrates the second pressing plate 172 and extends to the outside of the mounting seat 17 . The end of the needle tube 111 away from the sampling needle 113 abuts against the second pressing plate 172 . In this way, the sampling needle 113 can be stably fixed inside the mounting seat 17 , and the end of the needle tube 111 away from the sampling needle 113 can be stably fixed inside the mounting seat 17 . In this way, when the needle push rod 112 is driven to move up and down, the needle tube 111 and the sampling needle 113 remain fixed, that is, they do not move up and down with the needle push rod 112 .

Referring to Fig. 1, Fig. 8 to Fig. 10, in one embodiment, a spotting mechanism includes the spotting assembly 10 of any of the above embodiments, and also includes a bracket 30 and a push-pull mechanism 20. The spotting assembly 10 and the push-pull mechanism 20 are both mounted on the bracket 30, and the push-pull mechanism 20 is connected to the second end of the needle push rod 112.

With the above-mentioned spotting mechanism, during the spotting process, the liquid sample does not need to enter the original sampling needle 113 of the sampling needle 11, but enters the auxiliary needle 12, which can avoid contamination of the sampling needle 113; when it is needed to be used for spotting operations of other liquids, the auxiliary needle 12 can be replaced, which can reduce cross contamination and improve spotting efficiency. At the same time, since there is no need to replace the more expensive sampling needle 113, the cost can be reduced.

In some embodiments, the push-pull mechanism 20 includes but is not limited to a cylinder, a linear module, etc., as long as it can drive the push-pull rod to move up and down to achieve the extraction and spotting process of the liquid sample.

Please refer to Figures 8 to 10. In one embodiment, the push-pull mechanism 20 includes a drive motor 21, a screw rod 22, a moving block 23, a nut 24 and a guide assembly 25. The drive motor 21 is mounted on the bracket 30. The rotating shaft of the drive motor 21 is connected to the screw rod 22. The nut 24 is sleeved on the screw rod 22. The nut 24 is also connected to the moving block 23. The moving block 23 is connected to the bracket 30 through the guide assembly 25. The guide direction of the guide assembly 25 is parallel to the axial direction of the screw rod 22. When the drive motor 21 is working, it drives the screw rod 22 to rotate, and the nut 24 moves along the screw rod 22 accordingly, and drives the moving block 23 to move under the guidance of the guide assembly 25. When the moving block 23 moves, it drives the needle push rod 112 to move up and down, thereby realizing the sampling and spotting action. In this way, the forward and reverse rotation of the drive motor 21 can control the upward and downward movement of the needle push rod 112 to complete the sample extraction and release process.

Please refer to Figures 8 to 10. In one embodiment, the spotting mechanism further includes a position detection component 40. The position detection component 40 is used to detect the lifting height of the moving block 23, and the position detection component 40 is electrically connected to the push-pull mechanism 20. In this way, the position detection component 40 can detect the lifting height of the moving block 23, and the push-pull mechanism 20 drives the lifting action of the push-pull block according to the detection information of the position detection component 40, which can improve the accuracy of the lifting height of the moving block 23, thereby improving the accuracy of the liquid sample sucked and released.

Specifically, the position detection component 40 includes a grating disk reading terminal 41 and a grating code disk 42. The grating disk reading terminal 41 is fixed on the bracket 30, and the grating code disk 42 is installed on the lead screw. The grating disk reading terminal 41 detects the rotation angle of the grating code disk 42, thereby being able to accurately detect and control the rotation angle of the lead screw 22, and then being able to accurately control the moving distance of the needle push rod 112, so that the absorption and release amounts of the liquid sample meet the requirements.

Please refer to FIG. 10 . In one embodiment, the spotting mechanism further includes a position calibrator 50. The position calibrator 50 is used to detect the position of the moving block 23, which is defined as the zero position, and specifically, for example, the position of the moving block 23 corresponding to when the needle push rod 112 moves upward to the limit position, or the position of the moving block 23 corresponding to when the needle push rod 112 moves downward to the limit position. The position calibrator 50 is electrically connected to the push-pull mechanism 20. The position calibrator 50 performs a position calibration function, so that the position of the moving block 23 can be more accurately controlled, thereby accurately controlling the amount of liquid sample absorbed and released.

Please refer to FIG. 10 . In some embodiments, the position calibrator 50 includes a photoelectric switch 51 and a trigger 52 that cooperates with the photoelectric switch 51. One of the photoelectric switch 51 and the trigger 52 is mounted on the bracket 30, and the other is mounted on the moving block 23. When the moving block 23 drives the trigger 52 to move to the position of the photoelectric switch 51, the photoelectric switch 51 can sense it accordingly, and starts to output a signal to stimulate the drive motor 21 to perform a corresponding action.

In one embodiment, the guide assembly 25 can be set to one or more, and the guide assembly 25 includes but is not limited to the matching form of the guide rail 251 and the slider 252, the matching form of the guide sleeve and the guide rod, etc., which can be flexibly set according to actual needs. Specifically, the bracket 30 as a whole presents a groove structure, and the guide assembly 25 is set to, for example, two, and is arranged on the bracket 30 at a relative interval. Both guide assemblies 25 are connected to the moving block 23, play a guiding role for the moving block 23, and make the moving block 23 move smoothly under the drive of the screw rod 22.

Referring to FIGS. 8 to 10 , in some embodiments, the push-pull mechanism 20 further includes a motor seat 26 and a bearing seat 27. The drive motor 21 is mounted on the motor seat 26, and the motor seat 26 is mounted on the bracket 30. The rotating shaft of the drive motor 21 is specifically connected to the screw rod 22 through a coupling 28, and the coupling 28 includes but is not limited to a groove coupling 28. In addition, the bearing seat 27 is disposed on the bracket 30, and one end of the screw rod 22 away from the drive motor 21 is mounted on the bearing seat 27.

Please refer to FIG. 1 and FIG. 8 . In one embodiment, a medical detection device is provided. The medical detection device includes the spotting mechanism of any of the above embodiments.

In the above-mentioned medical detection device, during the spotting process, the liquid sample does not need to enter the original sampling needle 113 of the sampling needle 11, but enters the auxiliary needle 12, which can avoid contamination of the sampling needle 113; when it is needed for spotting operations of other liquids, the auxiliary needle 12 can be replaced, which can reduce cross contamination and improve spotting efficiency. At the same time, since there is no need to replace the more expensive sampling needle 113, the cost can be reduced.

In addition, when the spotting mechanism is working, after the push-pull mechanism 20 drives the moving block 23 back to the zero position, the needle push rod 112 starts to move upward to extract the liquid sample and keep the liquid sample on the auxiliary needle 12. The spotting mechanism has reliable airtightness to ensure that there is no risk of sample dripping when the liquid sample is moved to the detection platform. Due to the presence of the position detection component 40, it can be guaranteed that there is a sufficient amount of sample, avoiding the phenomenon of missing when the liquid sample is extracted and released.

1 and 8 , in one embodiment, the medical detection device further comprises a camera 60. The camera 60 is used to capture images of the spotting component 10 spotting the liquid sample, and the location of the liquid sample during spotting and placement can be determined based on the image information.

In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims (10)

1. A spotting component, characterized in that the spotting component comprises: A sampling needle, wherein at least one sampling needle is provided, and the sampling needle comprises a needle tube, a needle push rod, and a sampling needle head connected to the needle tube, wherein the first end of the needle push rod is movably inserted into the needle tube, and the second end of the needle push rod extends out of the needle tube and is used to be connected to a push-pull mechanism; and Auxiliary needle, the auxiliary needle is provided as at least one, and the auxiliary needle is arranged corresponding to the sampling needle and is detachably connected. 2 . The spotting assembly according to claim 1 , wherein the auxiliary needle is a low-adsorption tip. 3. The sample spotting assembly according to claim 1 is characterized in that the sample spotting assembly also includes a first sealing ring, a second sealing ring and a third sealing ring; the auxiliary needle is sleeved on the outside of the sampling needle, and the first sealing ring is arranged between the inner wall of the auxiliary needle and the outer wall of the sampling needle; the second sealing ring is sleeved on the outside of the first end of the needle push rod, and the second sealing ring abuts against the inner wall of the needle tube; the sampling needle is sleeved on the outside of the needle tube, and the third sealing ring is arranged between the inner wall of the sampling needle and the outer wall of the needle tube. 4. The sample spotting assembly according to claim 3, characterized in that the sample spotting assembly further comprises a fourth sealing ring; the fourth sealing ring is installed on the inner wall of the needle tube and is sleeved on the outside of the needle push rod to seal and abut against the outer wall of the needle push rod. 5. The spotting assembly according to claim 1 is characterized in that the sampling needle and the auxiliary needle are both provided in plurality, and each sampling needle is correspondingly connected to each auxiliary needle; the spotting assembly further comprises a mounting seat, and each sampling needle is installed on the mounting seat at intervals. 6. The spotting assembly according to claim 5, characterized in that the spotting assembly further comprises a push plate, the push plate is respectively connected to the second end of each of the needle push rods, and the push plate is also used to be connected to the push-pull mechanism; The mounting seat is provided with a mounting channel corresponding to the sampling needle, the sampling needle is inserted into the mounting channel, the spotting assembly further comprises a fifth sealing ring and a sixth sealing ring, the fifth sealing ring is sleeved and mounted on an end of the needle tube away from the sampling needle head, the fifth sealing ring is also tightly abutted against the inner wall of the mounting channel, the sixth sealing ring is sleeved and mounted on the outside of the sampling needle head, the sixth sealing ring is also tightly abutted against the inner wall of the mounting channel; The mounting seat also includes a first clamping plate detachably arranged on its bottom surface, and a second clamping plate detachably arranged on the top surface; the sampling needle passes through the first clamping plate and extends to the outside of the mounting seat, and the first clamping plate and the steps on the side wall of the sampling needle abut against each other; the second end of the needle push rod passes through the second clamping plate and extends to the outside of the mounting seat, and the end of the needle tube away from the sampling needle abuts against the second clamping plate. 7. A spotting mechanism, characterized in that it comprises the spotting assembly according to any one of claims 1 to 6, and further comprises a bracket and a push-pull mechanism; the spotting assembly and the push-pull mechanism are both mounted on the bracket, and the push-pull mechanism is connected to the second end of the needle push rod. 8. The spotting mechanism according to claim 7 is characterized in that the push-pull mechanism includes a driving motor, a screw, a moving block, a nut and a guide assembly, the driving motor is installed on the bracket, the rotating shaft of the driving motor is connected to the screw, the nut is sleeved on the screw, and the nut is also connected to the moving block, the moving block is connected to the bracket through the guide assembly, and the guiding direction of the guide assembly is parallel to the axial direction of the screw. 9. The spotting mechanism according to claim 8, characterized in that the spotting mechanism further comprises a position detection component, the position detection component is used to detect the lifting height of the moving block, and the position detection component is electrically connected to the push-pull mechanism; The spotting mechanism further includes a position calibrator, which is used to detect the position of the moving block, and the position calibrator is electrically connected to the push-pull mechanism. 10. A medical detection device, characterized in that the medical detection device comprises the spotting mechanism according to any one of claims 7 to 9.