Micro-angle swing control structure based on thrombelastogram

Abstract

The utility model relates to the technical field of thrombelastogram instruments, in particular to a micro-angle swing control structure based on a thrombelastogram instrument, which comprises an outer shell, a blood containing cup arranged in the outer shell and a swing mechanism arranged in the outer shell, the swing mechanism comprises a fixed seat, a connecting shaft and a swing assembly, the fixed seat is fixedly arranged in the outer shell, and the connecting shaft is connected with the swing assembly. The connecting shaft is coaxially arranged at the bottom of the blood containing cup and penetrates through the fixing base, and the swing assembly is used for controlling the connecting shaft to swing in the fixing base. The swing assembly drives the connecting shaft to swing through electromagnetic drive, the connecting shaft drives the blood containing cup to swing, swing of the blood containing cup is achieved through electromagnetic drive, the structure is simple, the assembly technology is simplified, cost is reduced, batch production is better facilitated, repeated positioning precision of swing every time is high, and therefore the accuracy of subsequent measurement is improved, and the production efficiency is improved. Therefore, the use convenience and the detection accuracy of the thrombelastogram instrument are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of thromboelastography, and in particular to a micro-angle swing control structure based on thromboelastography. Background Technology

[0002] Thromboelastography is an analyzer that detects dynamic changes in blood coagulation. It is a non-invasive diagnostic instrument used to monitor and analyze the coagulation state of blood samples, thereby playing an auxiliary role in assessing patients' clinical hemostasis symptoms. Thromboelastography is a special graph drawn by thromboelastography, which is an indicator reflecting the dynamic changes in blood coagulation.

[0003] The main components of a thromboelastography instrument include an automatically temperature-controlled stainless steel blood collection cup, a small stainless steel cylinder inserted into the cup, and a sensor that can be connected to the cylinder. The blood collection cup is placed on a reaction chamber that can swing back and forth at a 4°45′ angle. Blood is contained between the cup wall and the cylinder. When the blood sample is liquid, the back-and-forth rotation of the cup cannot move the cylinder, and the signal reflected on the tracing paper by the sensor is a straight line. When the blood begins to coagulate, resistance is generated between the cup and the cylinder due to fibrin adhesion. The rotation of the cup drives the cylinder to move simultaneously. As fibrin increases, the resistance also increases, and the movement of the cylinder driven by the cup changes accordingly. The movement of the cylinder cuts magnetic lines of force to generate current. The current is converted into a digital signal, and this signal is drawn on the tracing paper by the sensor to form a unique thromboelastography map.

[0004] Traditional thromboelastography instruments utilize a swinging structure in the blood collection cup. This structure employs a valve needle, coaxial with the center line of the annular magnetic induction coil of the angular displacement sensor, to drive the cup lid and sample cup to rotate relative to each other at a 4°45′ angle. The cup holder, acting as the active component, and the sample cup, interference-fitted within the cup holder, are connected to a rocker mechanism via a cam or eccentric wheel, forming the swinging device of the thromboelastography instrument. However, the cam-rocker mechanism occupies a large space, has a complex structure, and is not conducive to automation. Furthermore, it has low precision in controlling the angle of repeated swinging of the sample cup, thereby reducing the accuracy of subsequent measurements. Utility Model Content

[0005] To improve the ease of use and accuracy of thromboelastography, this invention provides a micro-angle swing control structure based on thromboelastography.

[0006] This application provides a micro-angle swing control structure based on a thromboelastography instrument, which adopts the following technical solution:

[0007] A micro-angle swing control structure based on a thromboelastography instrument includes an outer shell, a blood collection cup disposed within the outer shell, and a swing mechanism disposed within the outer shell. The swing mechanism includes a fixed base, a connecting shaft, and a swing assembly. The fixed base is fixed within the outer shell, the connecting shaft is coaxially disposed at the bottom of the blood collection cup and passes through the fixed base, and the swing assembly is used to control the swing of the connecting shaft within the fixed base.

[0008] By adopting the above technical solution, the blood cup is used to hold blood samples. The swing component drives the connecting shaft to swing, and the connecting shaft drives the blood cup to swing, thereby realizing the swing of the blood cup during the use of the thromboelastography instrument. The swing component is set in the fixed base and drives the blood cup to swing through the connecting shaft. It occupies less space and has a simple structure, thereby improving the convenience of using the thromboelastography instrument.

[0009] Optionally, the oscillating component includes:

[0010] The mounting block is located below the fixed base. The mounting block has a through hole that passes through the upper and lower surfaces of the mounting block. A mounting ring is rotatably installed in the through hole. The connecting shaft is coaxially inserted into the mounting ring and tightly fitted with the mounting ring.

[0011] An electromagnet is installed inside a mounting block. When current is applied to the electromagnet, the magnetic field generated by the electromagnet drives the mounting ring to rotate.

[0012] By adopting the above technical solution, during testing, an electric current is applied, and the electromagnet generates a magnetic field. The magnetic field drives the mounting ring to rotate, and the rotation of the mounting ring drives the connecting shaft to rotate. The blood cup is swung by electromagnetic drive. The structure is simple, the assembly process is simplified, thereby reducing costs and making it more conducive to mass production. Moreover, the repeatability of each swing is highly accurate, thereby improving the accuracy of subsequent measurements. Therefore, the convenience of using the thromboelastography instrument and the accuracy of detection are improved.

[0013] Optionally, a swing rod is fixed on the mounting ring. The swing rod is a permanent magnet shaft, and the magnetic field generated by the electromagnet drives the swing rod to swing.

[0014] By adopting the above technical solution, when current is applied, the magnetic field generated by the electromagnet and the swing rod generate an electromagnetic interaction and drive the swing rod to rotate. When the power is off, since the swing rod is a permanent magnet shaft, the swing rod will be attracted to the iron core of the electromagnet, thereby achieving a state of power-off retention. This improves the convenience of using the thromboelastography instrument and the accuracy of detection.

[0015] Optionally, two electromagnets are provided, both of which are located within the mounting block and driven in the same direction. A limiting channel is formed between the two electromagnets, and the end of the swing rod away from the mounting ring is located within the limiting channel.

[0016] By adopting the above technical solution and using a co-directional drive method, the swing direction of the swing rod can be controlled by controlling the direction of the electromagnetic coil. At the same time, the limiting channel limits the maximum swing angle of the swing rod, thereby controlling the swing angle of the swing rod and improving the ease of use of the thromboelastography instrument.

[0017] Optionally, the mounting block has a mounting cavity, the electromagnet is located in the mounting cavity, and the outer wall of the mounting block has a wire inlet, which communicates with the mounting cavity.

[0018] By adopting the above technical solution, the mounting cavity improves the ease of electromagnet installation, and the wire connection through the wire inlet improves the ease of current flow.

[0019] Optionally, the blood collection cup includes a constant temperature cup groove and a cup body, the connecting shaft is coaxially fixed to the bottom of the constant temperature cup groove, and the cup body is snapped into the constant temperature cup groove.

[0020] By adopting the above technical solution, the constant temperature cup bath keeps the cup body at the temperature required for detection. When the swing rod swings, it drives the constant temperature cup bath to swing through the connecting shaft. The cup body swings synchronously with the constant temperature cup bath, thereby improving the ease of use of the thromboelastography instrument.

[0021] Optionally, the fixed base is provided with a support bearing, and the connecting shaft passes through the support bearing.

[0022] By adopting the above technical solution, the support bearing supports the connecting shaft, thereby improving the stability of the connecting shaft during the swing process, thus improving the ease of use and accuracy of the thromboelastography instrument.

[0023] Optionally, the fixing base is provided with a limiting platform for limiting the constant temperature cup pool. The limiting platform is annular and its inner diameter is larger than the outer diameter of the constant temperature cup pool.

[0024] By adopting the above technical solution, the limiting stage limits the maximum angle of the constant temperature cup's swing, and the limiting channel improves the stability of the constant temperature cup's swing, thereby improving the ease of use and accuracy of the thromboelastography instrument.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The blood cup is used to hold blood samples. The swinging component drives the connecting shaft to swing, and the connecting shaft drives the blood cup to swing, thereby realizing the swinging of the blood cup during the use of the thromboelastography instrument. The swinging component is set in the fixed base and drives the blood cup to swing through the connecting shaft. It occupies less space and has a simple structure, thus improving the convenience of using the thromboelastography instrument.

[0027] 2. During testing, an electric current is applied, and the electromagnet generates a magnetic field. The magnetic field drives the mounting ring to rotate, which in turn drives the connecting shaft to rotate. The blood cup is swung by electromagnetic drive. The structure is simple, which simplifies the assembly process, thereby reducing costs and making it more suitable for mass production. In addition, the repeatability of each swing is highly accurate, which improves the accuracy of subsequent measurements. Therefore, the convenience of using the thromboelastography instrument and the accuracy of testing are improved.

[0028] 3. By adopting a unidirectional drive method, the swing direction of the swing rod can be controlled by controlling the direction of the electromagnetic coil. At the same time, the limit channel limits the maximum swing angle of the swing rod, thereby controlling the swing angle of the swing rod and improving the ease of use of the thromboelastography instrument. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this application;

[0030] Figure 2 This is an exploded view of the blood-collecting cup and the swinging mechanism in this application;

[0031] Figure 3 This is a schematic diagram of the swing component in this application.

[0032] Reference numerals: 1. Outer shell; 11. Mounting port; 2. Blood cup; 21. Thermostatic cup holder; 22. Cup body; 3. Swinging mechanism; 31. Fixed base; 311. Support bearing; 312. Limiting platform; 32. Connecting shaft; 33. Swinging assembly; 331. Mounting block; 332. Electromagnet; 34. Mounting cavity; 35. Through hole; 36. Mounting ring; 361. Swinging rod; 37. Wire inlet; 38. Limiting channel. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0034] This application discloses a micro-angle swing control structure based on a thromboelastography instrument.

[0035] Reference Figure 1 and Figure 2 A micro-angle swing control structure based on a thromboelastography instrument includes an outer shell 1, a blood collection cup 2 disposed within the outer shell 1, and a swing mechanism 3 disposed within the outer shell 1. The swing mechanism 3 includes a fixed base 31, a connecting shaft 32, and a swing assembly 33.

[0036] Reference Figure 1 and Figure 2The outer shell 1 is cylindrical and has a vertical mounting port 11. The mounting port 11 connects the inside and outside of the outer shell 1. The fixing seat 31 is coaxially fixed inside the outer shell 1. The fixing seat 31 is equipped with a support bearing 311. The connecting shaft 32 is vertically inserted into the support bearing 311.

[0037] Reference Figure 1 and Figure 2 The blood collection cup 2 includes a constant temperature cup groove 21 and a cup body 22. The constant temperature cup groove 21 is located above the fixed base 31. The diameter of the top of the constant temperature cup groove 21 is larger than the diameter of the bottom. The lower surface of the top of the constant temperature cup groove 21 abuts against the upper surface of the outer shell 1. The constant temperature cup groove 21 has a built-in electric heating film (not shown in the figure). The cup body 22 is snapped into the constant temperature cup groove 21. In other feasible embodiments, the constant temperature cup groove 21 can also be heated and kept constant temperature using any of the constant temperature methods used in the sampling cup in the prior art.

[0038] Reference Figure 1 and Figure 2 The connecting shaft 32 is coaxially located at the bottom of the blood cup 2 and passes through the fixed seat 31. The top of the connecting shaft 32 is coaxially fixed to the bottom of the constant temperature cup 21. The fixed seat 31 is provided with a limiting platform 312 for limiting the constant temperature cup 21. The limiting platform 312 is located above the support bearing 311 and is annular. The inner diameter of the limiting platform 312 is larger than the outer diameter of the constant temperature cup 21.

[0039] Reference Figure 1 , Figure 2 and Figure 3 The swing assembly 33 is used to control the swing of the connecting shaft 32 within the fixed base 31. The swing assembly 33 includes a mounting block 331 and an electromagnet 332. The mounting block 331 is located below the fixed base 31. The mounting block 331 has a mounting cavity 34. The mounting cavity 34 has a through hole 35 that passes through the upper and lower surfaces of the mounting block 331. A mounting ring 36 is rotatably mounted within the through hole 35. The connecting shaft 32 is coaxially inserted into the mounting ring 36 and tightly fitted with the mounting ring 36. When the mounting ring 36 rotates, it drives the connecting shaft 32 to rotate synchronously. A swing rod 361 is fixed on the outer surface of the mounting ring 36. The swing rod 361 is a permanent magnet shaft.

[0040] Reference Figure 2 and Figure 3Two electromagnets 332 are provided, both of which are located in the mounting cavity 34. The outer wall of the mounting block 331 has a wire inlet 37, which is connected to the mounting cavity 34. The two electromagnets 332 are driven in the same direction, and a limit channel 38 is formed between them. The end of the swing rod 361 away from the mounting ring 36 is located in the limit channel 38. When current is applied to the electromagnets 332, the magnetic field generated by the two electromagnets 332 drives the swing rod 361 to rotate. The swing direction of the swing rod 361 is controlled by controlling the direction of the electromagnetic coil. With the help of the limit channel 38, precise control of micro-angle swing is achieved. At the same time, since the swing rod 361 is a permanent magnet, when the swing rod 361 touches the iron core of the electromagnet 332, it is attracted and remains in the same position after the power is cut off.

[0041] Reference Figure 1 , Figure 2 and Figure 3 During testing, the blood sample is placed in the cup 22, and the constant temperature cup bath 21 maintains the required temperature for testing. When current is applied, the electromagnet 332 generates a magnetic field, which drives the mounting ring 36 to rotate. The rotation of the mounting ring 36 drives the connecting shaft 32 to rotate, thus achieving the swing of the blood cup 2 through electromagnetic drive. The structure is simple, the assembly process is simplified, thereby reducing costs and facilitating mass production. The same-direction drive method is adopted, so the swing direction of the swing rod 361 can be controlled by controlling the direction of the electromagnetic coil. At the same time, the limit channel 38 limits the maximum swing angle of the swing rod 361, thereby achieving control of the swing angle of the swing rod 361. Moreover, the repeatability of each swing is highly accurate, thereby improving the accuracy of subsequent measurements. Therefore, the convenience of using the thromboelastography instrument and the accuracy of detection are improved.

[0042] In practical applications, the structure of electromagnet 332 and swing rod 361 can also be used in other detection environments that require swinging. The maximum swing angle can be controlled by changing the width of the limiting channel 38.

[0043] The working principle of this application embodiment is as follows:

[0044] During testing, the blood sample is placed in the cup 22, and the constant temperature cup bath 21 maintains the required temperature for testing. When current is applied, the electromagnet 332 generates a magnetic field, which drives the mounting ring 36 to rotate. The rotation of the mounting ring 36 drives the connecting shaft 32 to rotate, thus achieving the swing of the blood cup 2 through electromagnetic drive. The structure is simple, the assembly process is simplified, thereby reducing costs and facilitating mass production. The same-direction drive method is adopted, so the swing direction of the swing rod 361 can be controlled by controlling the direction of the electromagnetic coil. At the same time, the limiting channel 38 limits the maximum swing angle of the swing rod 361, thereby achieving control of the swing angle of the swing rod 361. Moreover, the repeatability of each swing is highly accurate, thereby improving the accuracy of subsequent measurements. Therefore, the convenience of using the thromboelastography instrument and the accuracy of detection are improved.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A micro-angle swing control structure based on a thromboelastography instrument, characterized in that: The device includes an outer shell (1), a blood collection cup (2) disposed inside the outer shell (1), and a swing mechanism (3) disposed inside the outer shell (1). The swing mechanism (3) includes a fixed base (31), a connecting shaft (32), and a swing assembly (33). The fixed base (31) is fixed inside the outer shell (1). The connecting shaft (32) is coaxially disposed at the bottom of the blood collection cup (2) and passes through the fixed base (31). The swing assembly (33) is used to control the connecting shaft (32) to swing within the fixed base (31).

2. The micro-angle swing control structure based on a thromboelastography instrument according to claim 1, characterized in that: The swing assembly (33) includes: Mounting block (331), the mounting block (331) is located below the fixed base (31), the mounting block (331) has a through hole (35) that passes through the upper and lower surfaces of the mounting block (331), the mounting ring (36) is rotatably provided in the through hole (35), and the connecting shaft (32) is coaxially inserted in the mounting ring (36) and tightly fitted with the mounting ring (36); An electromagnet (332) is installed inside a mounting block (331). When current is applied to the electromagnet (332), the magnetic field generated by the electromagnet (332) drives the mounting ring (36) to rotate.

3. The micro-angle swing control structure based on a thromboelastography instrument according to claim 2, characterized in that: A swing rod (361) is fixed on the mounting ring (36). The swing rod (361) is a permanent magnet shaft. The magnetic field generated by the electromagnet (332) drives the swing rod (361) to swing.

4. The micro-angle swing control structure based on a thromboelastography instrument according to claim 3, characterized in that: Two electromagnets (332) are provided, both of which are located in the mounting block (331) and are driven in the same direction. A limiting channel (38) is formed between the two electromagnets (332), and the end of the swing rod (361) away from the mounting ring (36) is located in the limiting channel (38).

5. The micro-angle swing control structure based on a thromboelastography instrument according to claim 2, characterized in that: The mounting block (331) has a mounting cavity (34), the electromagnet (332) is located in the mounting cavity (34), and the outer wall of the mounting block (331) has a wire inlet (37), which is connected to the mounting cavity (34).

6. The micro-angle swing control structure based on a thromboelastography instrument according to claim 1, characterized in that: The blood collection cup (2) includes a constant temperature cup groove (21) and a cup body (22). The connecting shaft (32) is coaxially fixed at the bottom of the constant temperature cup groove (21), and the cup body (22) is snapped into the constant temperature cup groove (21).

7. The micro-angle swing control structure based on a thromboelastography instrument according to claim 6, characterized in that: The fixed base (31) is provided with a support bearing (311), and the connecting shaft (32) passes through the support bearing (311).

8. The micro-angle swing control structure based on a thromboelastography instrument according to claim 7, characterized in that: The fixed base (31) is provided with a limiting platform (312) for limiting the constant temperature cup (21). The limiting platform (312) is annular and its inner diameter is larger than the outer diameter of the constant temperature cup (21).

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