A sample dispensing device for a coagulation analyzer

Abstract

This utility model relates to the field of medical equipment technology, specifically a sample loading device for a coagulation analyzer. It includes a ZR motion component, a sample loading component, a sample placement component, and a sample tube. The sample loading component is fixedly installed on the upper end of the ZR motion component, and the sample placement component is installed on the rear side of the ZR motion component. Both the sample loading and placement components include a mounting plate, a fixing block, a sample loading needle, a feed tube, a liquid level sensing plate, a sample pump, a third motor, a blowing tube, a suction tube, and a guide tube. The sample tube is positioned below the sample loading needle. The third motor, in conjunction with the sample pump, precisely aspirates the sample and then precisely blows it into the sample loading needle. The sample loading needle then transports the sample into the sample tube. Simultaneously, the liquid level sensing plate, in conjunction with the sample loading needle, detects the liquid level height by monitoring capacitance changes, further improving the loading accuracy and thus enhancing the sample detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically to a sample dispensing device for a coagulation analyzer. Background Technology

[0002] Coagulation analyzers are medical clinical laboratory equipment (laboratory medical devices). They are used in clinical practice to measure the content of various components in human blood, quantify biochemical analysis results, and provide reliable digital evidence for the clinical diagnosis of various diseases in patients. They are essential routine testing equipment in clinical practice. Among them, announcement number CN208689055U discloses a sample dispensing device for a coagulation analyzer, including: a base with a mounting seat on the base; a ball spline with a spline sleeve rotatably connected to a seat hole in the mounting seat; a sample dispensing needle assembly fixed to one end of the spline shaft of the ball spline; a linear drive component connected to the other end of the spline shaft for driving the spline shaft to move up and down; and a rotary drive component connected to the spline sleeve for driving the ball spline to rotate. The sample dispensing needle assembly of this device is connected to the linear drive component and the rotary drive component via the ball spline, realizing vertical up-and-down movement and horizontal rotation of the sample dispensing needle assembly. Compared with the existing three-axis operation mode, this reduces the overall size of the device, simplifies the structure of the sample dispensing device, and makes operation easier. Furthermore, since the sample dispensing needle assembly can rotate in the horizontal plane, it can dispense samples to multiple positions, making operation more flexible, shortening operation time, and improving work efficiency.

[0003] During use, the device directly adds samples through the sample dispensing needle assembly. The amount of sample added is difficult to control precisely, which can easily lead to too much or too little sample, thus affecting the accuracy of data detection.

[0004] Therefore, it is necessary to invent a sample loading device for a coagulation analyzer to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a sample loading device for a coagulation analyzer, so as to solve the problem that the amount of sample loaded is difficult to control precisely, which affects the accuracy of data detection.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sample loading device for a coagulation analyzer, comprising a ZR motion component, a sample loading component, a sample feeding component, and a sample tube. The sample loading component is fixedly installed on the upper end of the ZR motion component, and the sample feeding component is installed on the rear side of the ZR motion component. The sample loading component and the sample feeding component include a mounting plate, a fixing block, a sample loading needle, a feed tube, a liquid level sensing plate, a sample pump, a third motor, a blowing tube, a suction tube, and a guide tube. The sample tube is disposed on the lower side of the sample loading needle.

[0007] By adopting the above technical solution, the ZR motion component is used to adjust the height and left and right angle of the sample dispensing component, which facilitates the dispensing of samples to sample tubes at different positions. The sample loading component is used to transport the sample into the sample dispensing component. The third motor, together with the sample pump, accurately draws the sample and then accurately blows the sample into the inside of the sample dispensing needle. The sample dispensing needle transports the sample into the inside of the sample tube. At the same time, the liquid level sensing plate, together with the sample dispensing needle, detects the liquid level height by monitoring the change in capacitance, further improving the feeding accuracy.

[0008] Optionally, the fixing block is fixedly connected to the front end of the mounting plate, the sampling needle is fixedly connected to the lower end of the fixing block, and the feed tube is fixedly connected to the upper end of the sampling needle.

[0009] By adopting the above technical solution, the feed tube is used to input the sample into the inside of the sample dispensing needle, and the sample dispensing needle is used to transport the sample into the inside of the sample tube.

[0010] Optionally, the liquid level sensing plate is fixedly installed in the middle of the mounting plate, and the liquid level sensing plate is electrically connected to the sampling needle.

[0011] By adopting the above technical solution, the sampling needle contacts the sample, and the liquid level is determined by real-time monitoring of capacitance changes, thereby improving the sampling accuracy.

[0012] Optionally, the third motor is fixedly installed at the lower end of the sample pump, the blowing pipe and the suction pipe are both fixedly connected to the upper end of the sample pump, the guide pipe is fixedly connected to the upper end of the blowing pipe, and the end of the guide pipe away from the blowing pipe is fixedly connected to the feed pipe.

[0013] By adopting the above technical solution, the third motor is used to drive the sample pump to draw up the sample. A quantitative amount of sample is drawn up through the suction tube, and then the sample is blown into the inside of the sample needle through the blowing tube and the guide tube.

[0014] Optionally, the ZR motion assembly includes a first fixed plate, a second fixed plate, and a third fixed plate. The second fixed plate and the third fixed plate are fixedly connected to the lower end and the upper end of the first fixed plate, respectively. A first motor is fixedly installed on the lower end of the right side surface of the first fixed plate, and a second motor is fixedly installed on the lower surface of the third fixed plate near the right end.

[0015] By adopting the above technical solution, the first motor, the second motor, and the third motor are all motors equipped with encoders, which facilitates precise control.

[0016] Optionally, the output end of the first motor is fixedly connected to a first pulley, and a second pulley is rotatably connected to the left side surface of the first fixed plate near the upper end. A first transmission belt is connected between the first pulley and the second pulley. A first connecting block is fixedly connected to the surface of the first transmission belt. A guide rod is fixedly connected to the lower end of the first connecting block. A limit sleeve is fixedly connected to the left side surface of the first fixed plate near the lower end. The guide rod and the limit sleeve are slidably connected.

[0017] By adopting the above technical solution, the first motor drives the first pulley to rotate, the first pulley and the second pulley cooperate to drive the first transmission belt to rotate, thereby driving the first connecting block to rise and fall, while the guide rod slides up and down inside the limiting sleeve to limit the position of the first connecting block.

[0018] Optionally, a third pulley is fixedly connected to the upper end of the second motor, a mounting base is fixedly connected to the left end of the third fixing plate, a fourth pulley is rotatably connected to the upper end of the mounting base, and a second transmission belt is drivingly connected between the third pulley and the fourth pulley.

[0019] By adopting the above technical solution, the second motor is used to drive the third pulley to rotate, and the third pulley and the fourth pulley cooperate to drive the second transmission belt to rotate.

[0020] Optionally, a lifting rod is slidably connected inside the fourth pulley. The upper end of the lifting rod is fixedly connected to the rear end of the mounting plate, and the lower end of the lifting rod is rotatably connected to a second connecting block. The second connecting block is fixedly connected to the first connecting block. A limit groove is formed on the side of the lifting rod, and a limit block is fixedly connected to the surface of the fourth pulley. The fourth pulley is locked inside the limit groove.

[0021] By adopting the above technical solution, the fourth pulley, lifting rod, limiting block and limiting groove work together to drive the mounting plate to rotate, thereby driving the dispensing needle to rotate and adjusting the vertical position of the dispensing needle. The first connecting block and the second connecting block work together to drive the lifting rod to rise and fall, thereby adjusting the vertical position of the dispensing needle.

[0022] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This invention uses a third motor in conjunction with a sample pump to precisely aspirate the sample and then precisely blow it into the sample needle. The sample needle then delivers the sample into the sample tube. Simultaneously, a liquid level sensor plate, in conjunction with the sample needle, detects the liquid level by monitoring changes in capacitance, further improving the feeding accuracy and thus the accuracy of sample detection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the sample loading component structure of this utility model; Figure 3 This is a schematic diagram of the ZR motion component structure of this utility model; Figure 4 This utility model Figure 3 Schematic diagram of the structure at point A in the diagram; Figure 5 This is a schematic diagram of the sample feeding component structure of this utility model.

[0024] Explanation of reference numerals in the attached figures: 1. ZR motion assembly; 11. First fixed plate; 12. Second fixed plate; 13. Third fixed plate; 14. First motor; 15. First pulley; 16. Second pulley; 17. First transmission belt; 18. First connecting block; 19. Guide rod; 110. Second motor; 111. Third pulley; 112. Mounting base; 113. Fourth pulley; 114. Lifting rod; 115. Limiting groove; 116. Second transmission belt; 117. Second connecting block; 2. Sample loading assembly; 21. Mounting plate; 22. Fixed block; 23. Sample loading needle; 24. Feed tube; 25. Liquid level sensing plate; 3. Sample loading assembly; 31. Sample pump; 32. Third motor; 33. Blowing tube; 34. Suction tube; 35. Guide tube; 4. Sample tube. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figures 1 to 5 The sample loading device of the coagulation analyzer shown includes a ZR motion component 1, a sample loading component 2, a sample loading component 3, and a sample tube 4. The sample loading component 2 is fixedly installed on the upper end of the ZR motion component 1, and the sample loading component 3 is installed on the rear side of the ZR motion component 1. The sample loading component 2 and the sample loading component 3 include a mounting plate 21, a fixing block 22, a sample loading needle 23, a feed tube 24, a liquid level sensing plate 25, a sample pump 31, a third motor 32, a blowing tube 33, a suction tube 34, and a guide tube 35. The sample tube 4 is located on the lower side of the sample loading needle 23.

[0027] During the sample loading process, the sample tube 4 is placed in an arc shape on the side of the ZR motion component 1. The ZR motion component 1 is used to adjust the height and angle of the sample loading component 2, which in turn adjusts the height and horizontal angle of the loading needle 23. At this time, the sample loading component 2 and the sample feeding component 3 work together to sequentially load multiple sets of sample tubes 4, improving the convenience of operation and enabling the loading of large batches of samples. See Figure 1 , Figure 2 and Figure 5 The fixing block 22 is fixedly connected to the front end of the mounting plate 21, the sampling needle 23 is fixedly connected to the lower end of the fixing block 22, the feed pipe 24 is fixedly connected to the upper end of the sampling needle 23, the liquid level sensing plate 25 is fixedly installed in the middle position of the mounting plate 21, the liquid level sensing plate 25 is electrically connected to the sampling needle 23, the third motor 32 is fixedly installed at the lower end of the sampling pump 31, the blowing pipe 33 and the suction pipe 34 are both fixedly connected to the upper end of the sampling pump 31, the guide pipe 35 is fixedly connected to the upper end of the blowing pipe 33, and the end of the guide pipe 35 away from the blowing pipe 33 is fixedly connected to the feed pipe 24.

[0028] Specifically, the third motor 32 and the sample pump 31 work together to precisely aspirate the sample through the suction tube 34. Then, the sample is transported to the inside of the sample needle 23 through the blowing tube 33, the guide tube 35, and the feed tube 24. The sample is then injected into the sample tube 4 through the sample needle 23. During the injection process, the liquid level sensor plate 25 and the sample needle 23 work together to monitor the change in capacitance in real time and detect the position of the liquid level. The third motor 32 and the sample pump 31 work together to precisely blow and wash the sample. The liquid level sensor plate 25 and the sample needle 23 work together to perform double-layer detection of the sample volume, thereby improving the accuracy of sample addition.

[0029] See Figure 1 , Figure 3 and Figure 4The ZR motion assembly 1 includes a first fixed plate 11, a second fixed plate 12, and a third fixed plate 13. The second fixed plate 12 and the third fixed plate 13 are fixedly connected to the lower end and the upper end of the first fixed plate 11, respectively. A first motor 14 is fixedly installed on the lower end of the right side surface of the first fixed plate 11, and a second motor 110 is fixedly installed on the lower surface of the third fixed plate 13 near the right end. A first pulley 15 is fixedly connected to the output end of the first motor 14. A second pulley 16 is rotatably connected to the upper end of the left side surface of the first fixed plate 11. A first transmission belt 17 is drivingly connected between the first pulley 15 and the second pulley 16. A first connecting block 18 is fixedly connected to the surface of the first transmission belt 17. A guide rod 19 is fixedly connected to the lower end of the first connecting block 18. A guide rod 19 is fixedly connected to the lower end of the left side surface of the first fixed plate 11. A fixed connection is provided with a limiting sleeve, and a guide rod 19 is slidably connected to the limiting sleeve. The upper end of the second motor 110 is fixedly connected to a third pulley 111. The left end of the third fixed plate 13 is fixedly connected to a mounting base 112. The upper end of the mounting base 112 is rotatably connected to a fourth pulley 113. A second transmission belt 116 is connected between the third pulley 111 and the fourth pulley 113. A lifting rod 114 is slidably connected inside the fourth pulley 113. The upper end of the lifting rod 114 is fixedly connected to the rear end of the mounting plate 21. The lower end of the lifting rod 114 is rotatably connected to a second connecting block 117. The second connecting block 117 is fixedly connected to a first connecting block 18. A limiting groove 115 is opened on the side of the lifting rod 114. A limiting block is fixedly connected to the surface of the fourth pulley 113. The fourth pulley 113 is stuck inside the limiting groove 115.

[0030] In addition, the first motor 14 drives the first pulley 15 to rotate, and the first pulley 15 and the second pulley 16 cooperate to drive the first transmission belt 17 to rotate, which in turn drives the first connecting block 18 to rise and fall. The first connecting block 18 drives the second connecting block 117 to rise and fall, and the second connecting block 117 drives the lifting rod 114 to slide up and down inside the fourth pulley 113 to adjust the height of the mounting plate 21 and the sample needle 23. At the same time, the second motor 110 drives the third pulley 111 to rotate, and the third pulley 111 and the second transmission belt 116 cooperate to drive the fourth pulley 113 to rotate. The fourth pulley 113, the limiting block and the limiting groove 115 cooperate to drive the lifting rod 114 to rotate, thereby adjusting the horizontal angle of the mounting plate 21 and the sample needle 23.

[0031] In the specific sample addition process, the sample needle 23 is first lifted and rotated to the upper side of the sample tube 4. Then, the sample needle 23 is moved down into the sample tube 4. The first motor 14 precisely controls the height of the sample needle 23. Then, the sample is added into the sample tube 4. After the addition is completed, the sample needle 23 is lifted and rotated to the upper side of another set of sample tubes 4.

[0032] The working principle of this utility model is as follows: The third motor 32, together with the sample pump 31, accurately draws the sample and then blows it into the sample needle 23. The sample needle 23 delivers the sample into the sample tube 4. At the same time, the liquid level sensing plate 25, together with the sample needle 23, detects the liquid level by monitoring the change in capacitance, thereby improving the feeding accuracy and thus improving the detection accuracy of the sample.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A sample loading device for a coagulation analyzer, comprising a ZR motion assembly (1), a sample loading assembly (2), a sample feeding assembly (3), and a sample tube (4), characterized in that: The sample loading component (2) is fixedly installed on the upper end of the ZR motion component (1), and the sample feeding component (3) is installed on the rear side of the ZR motion component (1). The sample loading component (2) and the sample feeding component (3) include a mounting plate (21), a fixing block (22), a sample loading needle (23), a feed tube (24), a liquid level sensing plate (25), a sample pump (31), a third motor (32), a blowing tube (33), a suction tube (34), and a guide tube (35). The sample tube (4) is located on the lower side of the sample loading needle (23).

2. The sample dispensing device for a coagulation analyzer according to claim 1, characterized in that: The fixing block (22) is fixedly connected to the front end of the mounting plate (21), the sample needle (23) is fixedly connected to the lower end of the fixing block (22), and the feed tube (24) is fixedly connected to the upper end of the sample needle (23).

3. The sample dispensing device for a coagulation analyzer according to claim 2, characterized in that: The liquid level sensing plate (25) is fixedly installed in the middle of the mounting plate (21), and the liquid level sensing plate (25) is electrically connected to the sampling needle (23).

4. The sample dispensing device for a coagulation analyzer according to claim 1, characterized in that: The third motor (32) is fixedly installed at the lower end of the sample pump (31). The blowing pipe (33) and the suction pipe (34) are both fixedly connected to the upper end of the sample pump (31). The guide pipe (35) is fixedly connected to the upper end of the blowing pipe (33). The end of the guide pipe (35) away from the blowing pipe (33) is fixedly connected to the feed pipe (24).

5. The sample dispensing device for a coagulation analyzer according to claim 1, characterized in that: The ZR motion assembly (1) includes a first fixed plate (11), a second fixed plate (12) and a third fixed plate (13). The second fixed plate (12) and the third fixed plate (13) are fixedly connected to the lower end and the upper end of the first fixed plate (11) respectively. A first motor (14) is fixedly installed on the lower end of the right side surface of the first fixed plate (11), and a second motor (110) is fixedly installed on the lower surface of the third fixed plate (13) near the right end.

6. The sample dispensing device for a coagulation analyzer according to claim 5, characterized in that: The output end of the first motor (14) is fixedly connected to a first pulley (15). The left side surface of the first fixed plate (11) is rotatably connected to a second pulley (16) near the upper end. The first pulley (15) and the second pulley (16) are connected by a first transmission belt (17). The surface of the first transmission belt (17) is fixedly connected to a first connecting block (18). The lower end of the first connecting block (18) is fixedly connected to a guide rod (19). The left side surface of the first fixed plate (11) is fixedly connected to a limit sleeve near the lower end. The guide rod (19) is slidably connected to the limit sleeve.

7. A sample dispensing device for a coagulation analyzer according to claim 6, characterized in that: The upper end of the second motor (110) is fixedly connected to a third pulley (111), the left end of the third fixed plate (13) is fixedly connected to a mounting base (112), the upper end of the mounting base (112) is rotatably connected to a fourth pulley (113), and a second transmission belt (116) is connected between the third pulley (111) and the fourth pulley (113).

8. A sample dispensing device for a coagulation analyzer according to claim 7, characterized in that: The fourth pulley (113) is internally slidably connected to a lifting rod (114). The upper end of the lifting rod (114) is fixedly connected to the rear end of the mounting plate (21). The lower end of the lifting rod (114) is rotatably connected to a second connecting block (117). The second connecting block (117) is fixedly connected to the first connecting block (18). A limiting groove (115) is opened on the side of the lifting rod (114). A limiting block is fixedly connected to the surface of the fourth pulley (113). The fourth pulley (113) is stuck inside the limiting groove (115).

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