Blood pump plug measuring device

Abstract

The utility model discloses a blood pump plug measuring device. The blood pump plug measuring device comprises a workbench; the height adjusting device comprises a measuring piece and a height adjusting assembly, the height adjusting assembly is arranged on the workbench, and the measuring piece is slidably connected to the height adjusting assembly in the vertical direction; the workpiece mounting device comprises a workpiece mounting mechanism, the workpiece mounting mechanism is slidably connected to the workbench in the horizontal direction, the workpiece mounting mechanism is provided with a containing space, the containing space is used for containing a to-be-measured product, and the measuring part measures a groove formed in the to-be-measured product. The utility model aims to improve the measurement precision and efficiency and improve the measurement adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool equipment field, especially a blood pump plug measuring device. BACKGROUND

[0002] In the prior art, the accurate measurement of certain specific groove sizes has always been a challenge, especially in situations requiring high precision and repeatability. Although conventional measuring tools such as special electronic inside calipers can provide relatively accurate measurement results in many application scenarios, due to the complex design of some grooves and their special locations (e.g., large depth, irregular shape, or located in difficult-to-reach positions), it is difficult to ensure that the measurement probe is in complete parallel contact with the groove surface when using traditional electronic inside calipers for measurement. This imbalance directly affects the consistency and accuracy of the measurement results, resulting in significant differences in data even when measuring the same groove multiple times. In order to obtain accurate measurement results, the operator needs to have a high skill level to ensure that the measuring tool is placed correctly and maintains a stable pressure and angle. However, in actual applications, even experienced technicians may not be able to do this every time, especially when working for a long time. SUMMARY

[0003] The main purpose of the present utility model is to provide a blood pump plug measuring device that improves measurement accuracy and efficiency and enhances the adaptability of measurement.

[0004] To achieve the above-mentioned purpose, the utility model provides a blood pump plug measuring device, which comprises:

[0005] a workbench;

[0006] a height adjusting device, the height adjusting device comprises a measuring piece and a height adjusting assembly, the height adjusting assembly is arranged on the workbench, and the measuring piece is slidably connected to the height adjusting assembly in the vertical direction;

[0007] a workpiece mounting device, the workpiece mounting device comprises a workpiece mounting mechanism, the workpiece mounting mechanism is slidably connected to the workbench in the horizontal direction, the workpiece mounting mechanism has a containing space, the containing space is used for accommodating a to-be-measured product, and the measuring piece measures a groove provided on the to-be-measured product.

[0008] In an embodiment, the workpiece mounting mechanism comprises a first sliding rail, a sliding block, a measuring seat assembly and a base, the base is arranged on the workbench, the first sliding rail is arranged on the base, the sliding block is slidably connected to the sliding rail in the horizontal direction, the measuring seat assembly is arranged on the sliding block, and the measuring seat assembly has the containing space.

[0009] In an embodiment, the blood pump head measuring device further comprises a limiting member, which is located on the sliding path of the slider away from the height adjusting device, and is used to limit the moving stroke of the slider.

[0010] In an embodiment, the measuring seat assembly comprises a mounting seat and a positioning block, the positioning block is arranged on the mounting seat, the mounting seat is arranged on the slider, and the positioning block and the mounting seat are configured to form the accommodation space.

[0011] In an embodiment, the mounting seat has a first mounting groove for accommodating the measured product, and the positioning block is configured in cooperation with the first mounting groove to form the accommodation space.

[0012] In an embodiment, the mounting seat has a first mounting groove, and the positioning block has a second mounting groove, the first mounting groove and the second mounting groove are configured in cooperation to form the accommodation space.

[0013] In an embodiment, the workpiece mounting device further comprises a support block, which is arranged on the base, and is located on the side of the measuring seat assembly close to the height adjusting assembly, the support block has a positioning groove for positioning the measuring member.

[0014] In an embodiment, the height adjusting assembly comprises a support column, a second sliding rail, an adjusting member, and a connecting member, the support column is arranged on the workbench, the second sliding rail is arranged on the support column, the connecting member is arranged on the second sliding rail in a vertical direction, the measuring member is connected to the connecting member, and the adjusting member is drivingly connected to the sliding rail to adjust the height position of the measuring member by sliding the sliding rail in a vertical direction.

[0015] In an embodiment, the adjusting member comprises an adjusting knob and a locking portion, the adjusting knob is arranged on the support column, the adjusting knob is drivingly connected to the sliding rail, and the adjusting knob is used to adjust the height of the measuring member, and the locking portion is arranged on the connecting member to fix the position of the measuring member after reaching the required height.

[0016] In an embodiment, the measuring member is a measuring probe.

[0017] The utility model discloses a blood pump plug measuring device, specifically speaking, it includes following several components: workstation is the basic structure of whole device, and other components are all installed on it. Height adjusting device this device further contains two parts: measuring piece is used to measure the specific part (such as recess) on blood pump plug (the product to be measured). Height adjusting component is fixed on the workstation, and allows measuring piece to slide up and down along vertical direction, so as to adapt to the measuring demand of different height or position. Workpiece mounting device, this device is mainly used for fixing the blood pump plug to be measured, and ensures that it can be positioned and measured accurately. It includes: workpiece mounting mechanism can slide along horizontal direction on the workstation, to adjust the position of the product to be measured. The mechanism is internally provided with accommodating space, for placing the product to be measured (i.e. blood pump plug), so as to guarantee its stability and correct positioning, and facilitate accurate measurement of measuring piece. In general, this is a kind of special equipment designed to accurately measure specific features (for example recess) on blood pump plug, and through the cooperation of height adjusting device and workpiece mounting device, the accurate positioning and measurement of the product to be measured can be realized. This helps to improve the measurement accuracy and efficiency, and is also suitable for different specifications of blood pump plug measurement. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the structure shown in these drawings without creative labor.

[0019] Figure 1 The structural schematic diagram of blood pump plug measuring device one embodiment provided by the utility model is provided.

[0020] Figure 2 The partial enlarged schematic view A of Figure 1

[0021] Figure 3 The structural schematic diagram of blood pump plug measuring device another embodiment provided by the utility model is provided.

[0022] Explanation of reference numerals:

[0023] ​10, workbench; 20, height adjusting device; 21, measuring piece; 22, height adjusting assembly; 221, support column; 222, second sliding rail; 223, adjusting piece; 224, connecting piece; 225, adjusting knob; 30, workpiece mounting device; 31, workpiece mounting mechanism; 311, first sliding rail, 312, sliding block; 313, measuring seat assembly; 314, base; 315, mounting seat; 316, positioning block; 317, first mounting groove; 318, second mounting groove; 32, containing space; 33, support block; 331, positioning groove; 40, limiting piece.

[0024] The realization, functional features and advantages of the utility model will be further described in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0027] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0028] The utility model provides a blood pump plug measuring device.

[0029] The following mainly illustrates the embodiments of the blood pump plug measuring device.

[0030] Reference is made to Figures 1 to 3 In an embodiment of the present application, a blood pump plug measuring device comprises:

[0031] a workbench 10;

[0032] a height adjusting device 20, the height adjusting device 20 comprises a measuring piece 21 and a height adjusting assembly 22, the height adjusting assembly 22 is arranged on the workbench 10, and the measuring piece 21 is slidingly connected to the height adjusting assembly 22 in the vertical direction;

[0033] a workpiece mounting device 30, the workpiece mounting device 30 comprises a workpiece mounting mechanism 31, the workpiece mounting mechanism 31 is slidingly connected to the workbench 10 in the horizontal direction, the workpiece mounting mechanism 31 has a containing space 32, the containing space 32 is used for accommodating a product to be measured, and the measuring piece 21 measures a groove provided on the product to be measured.

[0034] The utility model provides a device specially used for measuring blood pump plug, and the design purpose is to ensure accurate and repeatable measurement of specific grooves on the blood pump plug. The scheme includes a workbench 10, which serves as the base of the entire measurement system, providing a stable base platform to ensure that other components can be accurately installed and operated. The height adjusting device 20 includes a measuring part 21 and a height adjusting assembly 22. The measuring part 21 is the part that directly contacts the measured product and is used to obtain specific size information of the groove. The height adjusting assembly 22 allows the measuring part 21 to slide in the vertical direction to adapt to different height measurement requirements. This design ensures the accuracy of the measurement by adjusting the position of the measuring part even if the height of the measured product varies. The workpiece mounting device 30 includes a workpiece mounting mechanism 31, which includes a containing space 32 for fixing the blood pump plug to be measured. This mechanism can slide in the horizontal direction, making it easy to accurately position the measured product. Specifically, first place the blood pump plug to be measured in the containing space 32 of the workpiece mounting mechanism 31 and ensure its stability. According to the specific size of the blood pump plug, adjust the height of the measuring part 21 using the height adjusting assembly 22 so that it is in the appropriate measurement position. Move the workpiece mounting mechanism 31 horizontally to align the groove on the measured product with the measuring part 21. Start the measurement process, and the measuring part 21 contacts and measures the specific size of the groove. Calculate the actual size of the groove according to the formula: Actual value of groove = reading of measuring probe + 6. Record the measurement data, and after completing one measurement, you can reposition or replace the measured product as needed and repeat the above steps. In this embodiment, the position of the measuring part 21 is adjusted using the height adjusting assembly 22 to reach a depth of 7.8mm from the plug, preparing to measure a groove with a diameter of φ8.26±0.02mm and a width of 1mm. Calculate the actual size of the groove according to the formula: Actual value of groove = reading of measuring probe + 6. The utility model scheme designs height adjustment and horizontal sliding function, and the device can adapt to different types and sizes of blood pump plugs to ensure high precision in each measurement. The design of the horizontally sliding workpiece mounting mechanism and the vertically sliding measuring part makes the operation of the equipment more convenient, reduces the preparation time, and improves the work efficiency.

[0035] Please refer to Figures 1 to 3 In an embodiment of the utility model, the workpiece mounting mechanism 31 includes a first sliding rail 311, a sliding block 312, a measuring seat assembly 313, and a base 314. The base 314 is arranged on the workbench 10, the first sliding rail 311 is arranged on the base 314, the sliding block 312 is connected to the sliding rail 221 in the horizontal direction, the measuring seat assembly 313 is arranged on the sliding block 312, and the measuring seat assembly 313 has the containing space 32.

[0036] By adjusting the position of the measuring piece 21 using the height adjustment assembly 22, different depth positions on the measured object (7.8mm in this case) can be accurately aligned, ensuring the accuracy of the measurement. The design of the slider 312 slidingly connected to the first slide rail 311 in the horizontal direction allows the operator to easily fine-tune and translate the measured object, adapting to different measurement needs. Through the horizontal sliding mechanism and vertical adjustment function, the operation process of the equipment is simplified, making the installation and positioning of the measured object easier, reducing the preparation time and improving the work efficiency. Whether it is to replace the sample or to reposition different parts of the same sample, this design supports quick and accurate adjustment. Specifically, the measured blood pump plug is correctly placed in the accommodation space 32 of the measuring seat assembly 313, and its stability is ensured. The measuring seat assembly 313 is arranged on the slider 312, and the slider 312 can slide horizontally along the first slide rail 311. By pushing the slider 312 to move along the first slide rail 311, the measuring seat assembly 313 (together with the measured object) is roughly moved to a position close to the measurement position. This step is to quickly align the approximate position of the measuring piece 21 with the measured object. Adjust the height of the measuring piece 21 using the height adjustment assembly 22 to reach the depth (7.8mm in this case) that needs to be measured, preparing for accurate measurement of the groove with a diameter of φ8.26±0.02mm and a width of 1mm. Continue to fine-tune the position of the slider 312 to accurately align the groove on the measured object with the measuring piece 21. Since the slider 312 can move smoothly on the first slide rail 311, very fine position adjustment can be achieved to ensure the accuracy of the measurement. Start the measurement process and let the measuring piece 21 contact and measure the specific size of the groove. Record the reading of the measuring probe. According to the formula, calculate the actual size of the groove (for example: actual value = reading of the measuring probe + 6). Record and analyze the data to complete the measurement.

[0037] Please refer to Figures 1 to 3 In an embodiment of the present application, the blood pump plug measuring device further comprises a limiting piece 40, which is located on the sliding path of the slider 312 away from the height adjustment device 20, and is used to limit the movement stroke of the slider 312.

[0038] The main function of the limiting piece 40 is to prevent the slider 312 from exceeding its designed movement range, thereby avoiding damage to the equipment or inaccurate measurement due to excessive movement. By limiting the maximum movement distance of the slider, the risk of accidents can be reduced, ensuring the safety of the operator. The limiting piece 40 helps to ensure that the slider 312 can stop at the correct position each time, which is particularly important for tasks that require high precision measurement. It can ensure that the measured object is always in the same starting position, thereby improving the consistency and accuracy of the measurement.

[0039] With the help of the limiting piece 40, the consistency between different measurements is guaranteed, which is very important for quality control. It can be understood that the main body of the limiting piece 40 can be a block or plate structure made of a solid material such as metal or high-strength plastic, which ensures sufficient strength to withstand impact and wear during long-term use. The limiting piece 40 needs to have one or more mounting interfaces to facilitate fixation on the workbench 10 or the base 314 at the end of the sliding path of the slider 312. These interfaces can be threaded holes, buckles or other forms of quick connection devices to facilitate installation and removal for maintenance. In order to reduce the noise and vibration generated when the slider 312 hits the limiting piece, and to prevent damage to the slider, the front end of the limiting piece 40 (i.e. the part in contact with the slider) can be designed with a cushioning material or a special shaped contact surface. This can be a rubber pad, a spring shock absorber, or a specially treated surface (such as adding a wear-resistant coating).

[0040] Please refer to Figures 1 to 3 In an embodiment of the present application, the measuring seat assembly 313 includes a mounting seat 315 and a positioning block 316, the positioning block 316 is arranged on the mounting seat 315, the mounting seat 315 is arranged on the slider 312, and the positioning block 316 and the mounting seat 315 are configured to form the accommodation space 32.

[0041] The mounting seat 315 is arranged on the slider 312 as a base support part. The positioning block 316 is arranged on the mounting seat 315 and cooperates with the mounting seat 315 to form the accommodation space 32 for stably accommodating the blood pump plug to be measured. By using the positioning block 316, the positional consistency of each time the measured product is placed can be ensured. The mounting seat 315 provides a solid base, and the positioning block 316 adds an additional support point to ensure that the measured product does not move or deviate during the measurement process, enhancing the stability of the entire system. The main function of the positioning block 316 is to help accurately fix the position of the measured product. The positioning block is usually designed according to the specific shape and size of the measured product to ensure that the measured product can be stably placed in the correct position, and by replacing positioning blocks 316 of different shapes or sizes, this design can easily adapt to different types or sizes of measured products, improving the versatility and flexibility of the equipment. The accommodation space 32 is a specific area or cavity formed by the positioning block 316 and the mounting seat 315, which is specially used to accommodate the blood pump plug to be measured. In this way, the measured product can be accurately and stably positioned in the same position every time, thereby improving the consistency and accuracy of the measurement.

[0042] Please refer to Figures 1 to 3In an embodiment of the present application, the mounting seat 315 has a first mounting groove 317, the first mounting groove 317 is used for accommodating the measured product, and the positioning block 316 cooperates with the first mounting groove 317 to form the accommodating space 32.

[0043] The measuring seat assembly 313 is composed of the mounting seat 315 and the positioning block 316. The mounting seat 315 has a first mounting groove 317, and the positioning block 316 cooperates with the first mounting groove 317. The positioning block 316 not only helps to further fix the measured product, but also forms a more stable and accurate accommodating space 32 together with the first mounting groove 317, so as to ensure that the measured product remains stable during the whole measuring process. It can be understood that the first mounting groove 317 provides preliminary physical limitation, and the positioning block 316 increases additional support points, so as to ensure that the measured product does not move or deviate during the measuring process, thereby enhancing the overall stability of the system.

[0044] Please refer to Figures 1 to 3 In an embodiment of the present application, the mounting seat 315 has a first mounting groove 317, the positioning block 316 has a second mounting groove 318, and the first mounting groove 317 cooperates with the second mounting groove 318 to form the accommodating space 32.

[0045] The mounting seat 315 is fixed on the sliding block 312 and provides basic support. It is characterized in that it has a first mounting groove 317, which is specially made according to the shape of the measured product (such as a blood pump plug) and is used for preliminarily placing the measured product. The positioning block 316 is arranged on the mounting seat 315 and is characterized in that it has a second mounting groove 318. The second mounting groove 318 cooperates with the first mounting groove 317 to form an accommodating space 32 that accurately matches the shape of the measured product, so as to ensure that the measured product is stably and accurately placed. Through the cooperation of the first mounting groove 317 and the second mounting groove 318, the measured product can be accurately positioned. This design allows the measured product to be accurately placed in a preset position, ensuring the consistency of the position of the measured product during each measurement.

[0046] Please refer to Figures 1 to 3 In an embodiment of the present application, the workpiece mounting device 30 further comprises a support block 33, the support block 33 is arranged on the base 314, the support block 40 is located on the side of the measuring seat assembly 313 close to the height adjusting assembly 22, and the support block 33 has a positioning groove 331, the positioning groove 331 is used for positioning the measuring piece 21.

[0047] The support block 33 is fixed on the base 314 and located between the measurement seat assembly 313 and the height adjustment assembly 22. The positioning groove 331 is provided on the support block 33 and is specially designed for precise positioning of the measuring member 21. This ensures that the measuring member 21 can accurately reach the predetermined position for measurement each time. The support block 33 provides an additional support point for the measuring member 21, increasing the overall stability of the system. Especially when performing fine measurements, any slight shaking can affect the results, so it is necessary to add a stable support. It can be understood that the positioning groove 331 is a V-shaped groove. The V-shaped groove can accommodate cylindrical measuring members of different diameters within a certain range without the need to replace different positioning devices.

[0048] Please refer to Figures 1 to 3 In an embodiment of the present application, the height adjustment assembly 22 includes a support column 221, a second sliding rail 222, an adjustment member 223, and a connecting member 224. The support column 221 is provided on the workbench 10. The second sliding rail 222 is provided on the support column 221. The connecting member 224 is vertically slidingly provided on the second sliding rail 222. The measuring member 21 is connected to the connecting member 224. The adjustment member 223 is drivingly connected to the sliding rail 222 to adjust the height position of the measuring member 21 by sliding the sliding rail 222 vertically.

[0049] The support column 221 is fixed on the workbench 10 and provides a stable foundation for the entire height adjustment assembly. The second sliding rail 222 is mounted on the support column 221 and is arranged vertically to allow the connecting member 224 to slide thereon. The adjustment member 223 is drivingly connected to the second sliding rail 222 to drive the sliding rail to move up and down manually or automatically, thereby adjusting the height position of the measuring member 21. The connecting member 224 is vertically slidingly provided on the second sliding rail 222 and is directly connected to the measuring member 21. It is responsible for fixing the measuring member 21 at the desired height position. Through the design of the second sliding rail 222 and the adjustment member 223, fine adjustment of the height of the measuring member 21 can be achieved, ensuring that it can accurately reach the specified depth of the product to be measured. The support column 221 provides a solid foundation, while the second sliding rail 222 and the connecting member 224 ensure the stability and reliability of the measuring member 21 during the entire measurement process.

[0050] Please refer to Figures 1 to 3 In an embodiment of the present application, the adjustment member 223 includes an adjustment knob 225 and a locking portion. The adjustment knob 225 is provided on the support column 221 and is drivingly connected to the sliding rail 222. The adjustment knob 225 is used to adjust the height of the measuring member 21. The locking portion is provided on the connecting member 224 to fix the position of the measuring member 21 after reaching the desired height.

[0051] The support column 221 is fixed on the workbench 10, providing a stable foundation for the entire height adjustment assembly. The second sliding rail 222 is installed on the support column 221 and arranged in the vertical direction, allowing the connecting piece 224 to slide on it. The adjustment piece 223 includes an adjustment knob 225 and a locking part. The adjustment knob 225 is arranged on the support column 221 and is drivingly connected with the second sliding rail 222. By rotating the adjustment knob 225, the vertical movement of the second sliding rail 222 and the connecting piece 224 thereon can be controlled, thereby adjusting the height of the measuring piece 21. The locking part is arranged on the connecting piece 224 and is used to fix the position of the measuring piece 21 after reaching the desired height, ensuring that no displacement occurs during the measurement process. The connecting piece 224 is arranged on the second sliding rail 222 in the vertical direction and is directly connected to the measuring piece 21, responsible for fixing the measuring piece 21 at the desired height position. Through the design of the adjustment knob 225 and the second sliding rail 222, fine adjustment of the height of the measuring piece 21 can be achieved, ensuring that it can accurately reach the specified depth of the measured product (for example, 7.8mm). This design ensures that the measuring piece 21 is in the same and accurate position every time it is measured, reducing errors caused by manual adjustment. The design of the locking part ensures that the position of the measuring piece 21 is firmly locked after reaching the desired height, preventing any accidental displacement or shaking during the measurement process. This enhances the overall stability and reliability of the system, ensuring the consistency of the measurement results. The adjustment knob 225 provides an intuitive operation method, allowing the operator to easily adjust the height of the measuring piece 21 by rotating the knob. The locking part simplifies the fixing step, making the entire preparation process more efficient. This design reduces the need for complex calibration, improving work efficiency.

[0052] Please refer to Figures 1 to 3 In an embodiment of the present application, the measuring piece 21 is a measuring probe.

[0053] The measuring probe is usually a tool specially designed for direct contact with the surface of the measured object, which can provide very accurate size data. For application scenarios such as blood pump plugs that require high-precision measurement, using a measuring probe can ensure that the data obtained has high accuracy and repeatability. If the measuring probe is worn or damaged, it can be easily replaced without the need to make major adjustments to the entire measurement system, which can also reduce maintenance costs.

[0054] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A blood pump hub measurement device, characterized by, The utility model relates to a workbench, height adjusting device and workpiece mounting device. The utility model discloses a workbench, height adjusting device and workpiece mounting device. The workpiece mounting device comprises a workpiece mounting mechanism, which is slidably connected to the workbench in a horizontal direction. The workpiece mounting mechanism comprises a first sliding rail, a sliding block, a measuring seat assembly and a base.

2. The blood pump hub measurement device of claim 1, wherein, The workpiece mounting device further comprises a limiting piece, which is located on the sliding path of the sliding block away from the height adjusting device.

3. The blood pump hub measurement device of claim 2, wherein, The measuring seat assembly comprises a mounting seat and a positioning block.

4. The blood pump hub measurement device of claim 2, wherein, The mounting seat has a first mounting groove for accommodating the workpiece to be measured.

5. The blood pump hub measurement device of claim 4, wherein, The mounting seat has a first mounting groove, and the positioning block has a second mounting groove.

6. The blood pump hub measurement device of claim 4, wherein, The workpiece mounting device further comprises a support block, which is located on the base.

7. The blood pump hub measurement device of claim 2, wherein, The height adjusting assembly comprises a support column, a second sliding rail, an adjusting piece and a connecting piece.

8. The blood pump hub measurement device of claim 1, wherein, The adjusting piece comprises an adjusting knob and a locking part.

9. The blood pump hub measurement device of claim 8, wherein, The measuring piece is a measuring probe.

10. The blood pump hub measurement device of claim 1, wherein, ​

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