Micro-angle swing control structure based on thrombelastogram

Abstract

The invention relates to a micro-angle swing control structure based on a thrombelastogram instrument, and relates to the technical field of thrombelastogram instruments, the micro-angle swing control structure 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] The invention relates to the technical field of thromboelastographs, and in particular to a micro-angle swing control structure based on the thromboelastograph. Background Art

[0002] The thromboelastograph 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. The thromboelastograph is a special graph drawn by the thromboelastograph and is an indicator that reflects the dynamic changes in blood sample coagulation.

[0003] The main components of the thromboelastogram include a stainless steel blood cup that automatically adjusts the constant temperature, a small stainless steel cylinder inserted into the cup, and a sensor that can be connected to the cylinder. The blood cup is placed on a reaction pool that can swing back and forth at an angle of 4°45′. 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 drive the cylinder, and the signal reflected on the tracing paper through the sensor is a straight line. When the blood begins to coagulate, resistance is generated between the cup and the cylinder due to the adhesion of fibrin. The rotation of the cup drives the cylinder to move at the same time. As the fibrin increases, the resistance also increases, and the movement of the cylinder driven by the cup also changes accordingly. The movement of the cylinder cuts the magnetic lines to generate current, which is converted into a digital signal. This signal is drawn on the tracing paper through the sensor to form a unique thromboelastogram.

[0004] The swing structure of the blood cup of the traditional thromboelastograph utilizes a valve needle coaxial with the center line of the annular magnetic induction coil axis of the angular displacement sensor to drive the cup cover and the sample cup to perform coaxial relative motion at a rotation angle of 4°45′. The cup holder as an active component and the sample cup interference-fitted in the cup holder are connected to a rocker mechanism by a cam or an eccentric wheel to form a swing device of the thromboelastograph. However, the cam rocker mechanism occupies a large space and has a complex structure, which is not conducive to automation. In addition, the angle control accuracy of the repeated swing of the sample cup is low, thereby reducing the accuracy of subsequent measurements. Summary of the invention

[0005] In order to improve the convenience of using a thromboelastograph and the accuracy of detection, the present invention provides a micro-angle swing control structure based on the thromboelastograph.

[0006] The present application provides a micro-angle swing control structure based on a thromboelastograph, which adopts the following technical solution:

[0007] A micro-angle swing control structure based on a thromboelastography instrument comprises an outer shell, a blood cup arranged in the outer shell, and a swing mechanism arranged in the outer shell, wherein the swing mechanism comprises a fixed seat, a connecting shaft and a swing component, wherein the fixed seat is fixed in the outer shell, the connecting shaft is coaxially arranged at the bottom of the blood cup and penetrates the fixed seat, and the swing component is used to control the swing of the connecting shaft in the fixed seat.

[0008] By adopting the above technical solution, the blood cup is used to hold the blood sample, the swinging assembly 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 thromboelastograph. The swinging assembly is arranged in the fixed seat and the blood cup is driven to swing by the connecting shaft, which occupies a small space and has a simple structure, thereby improving the convenience of using the thromboelastograph.

[0009] Optionally, the swing assembly includes:

[0010] A mounting block, the mounting block is arranged below the fixing seat, the mounting block has a through hole penetrating the upper and lower surfaces of the mounting block, a mounting ring is rotatably arranged in the through hole, and the connecting shaft is coaxially inserted in the mounting ring and tightly matched with the mounting ring;

[0011] The electromagnet is arranged in the mounting block. When the electromagnet is connected to the current, the magnetic field generated by the electromagnet drives the mounting ring to rotate.

[0012] By adopting the above technical solution, during detection, current is connected, the electromagnet generates a magnetic field, the magnetic field drives the mounting ring to rotate, the rotation of the mounting ring drives the connecting shaft to rotate, and the blood cup is swung by electromagnetic drive. The structure is simple, the assembly process is simplified, thereby reducing costs, and it is more conducive to mass production. The repeated positioning accuracy of each swing is high, thereby improving the accuracy of subsequent measurements, thereby improving the convenience of using the thromboelastography instrument and the accuracy of detection.

[0013] Optionally, a swing rod is fixedly provided on the mounting ring, and 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 the current is connected, the magnetic field generated by the electromagnet generates an electromagnetic effect with the swing rod and drives the swing rod to rotate. When the power is off, since the swing rod is a permanent magnet shaft, the swing rod will be adsorbed on the iron core of the electromagnet, thereby achieving a power-off retention state, thereby improving the convenience of using the thromboelastography instrument and the accuracy of detection.

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

[0016] By adopting the above technical solution and the same-direction driving 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 achieving control of the swing angle of the swing rod, thereby improving the convenience of using 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 access port, which is connected to the mounting cavity.

[0018] By adopting the above technical solution, the installation cavity improves the convenience of installing the electromagnet, and the wire is connected through the wire access port, thereby improving the convenience of current input.

[0019] Optionally, the blood holding cup comprises 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 clamped in the constant temperature cup groove.

[0020] By adopting the above technical solution, the constant temperature cup tank allows the cup body to maintain the temperature required for detection. When the swing rod swings, the constant temperature cup tank is driven to swing through the connecting shaft, and the cup body swings synchronously with the constant temperature cup tank, thereby improving the convenience of using the thromboelastography instrument.

[0021] Optionally, a support bearing is provided in the fixing seat, 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 swinging process, thereby improving the convenience of use of the thromboelastography instrument and the accuracy of detection.

[0023] Optionally, a limiting platform for limiting the constant temperature cup slot is provided in the fixing seat, and the limiting platform is annular and has an inner diameter greater than an outer diameter of the constant temperature cup slot.

[0024] By adopting the above technical solution, the limit table limits the maximum swing angle of the constant temperature cup slot, and cooperates with the limit channel to improve the stability of the swing of the constant temperature cup slot, thereby improving the convenience of using the thromboelastography instrument and the accuracy of detection.

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

[0026] 1. The blood cup is used to hold blood samples. The swing assembly 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 thromboelastograph. The swing assembly is arranged in the fixed seat and the blood cup is driven to swing by the connecting shaft. It occupies a small space and has a simple structure, thereby improving the convenience of using the thromboelastograph.

[0027] 2. During detection, current is connected and the electromagnet generates a magnetic field, which drives the mounting ring to rotate. The rotation of the mounting ring drives the connecting shaft to rotate, and the blood cup is swung by electromagnetic drive. The structure is simple, which simplifies the assembly process, thereby reducing costs and being more conducive to mass production. The repeated positioning accuracy of each swing is high, thereby improving the accuracy of subsequent measurements, thereby improving the convenience of using the thrombelastograph and the accuracy of detection.

[0028] 3. By adopting the same-direction driving mode, 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 realizing the control of the swing angle of the swing rod and improving the convenience of using the thromboelastography instrument. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0030] Figure 2 is an exploded view of the blood cup and the swing mechanism in the present application;

[0031] Figure 3 It is a structural schematic diagram of the swing assembly in this application.

[0032] Figure numerals: 1, outer shell; 11, mounting port; 2, blood cup; 21, constant temperature cup slot; 22, cup body; 3, swing mechanism; 31, fixed seat; 311, support bearing; 312, limit table; 32, connecting shaft; 33, swing assembly; 331, mounting block; 332, electromagnet; 34, mounting cavity; 35, through hole; 36, mounting ring; 361, swing rod; 37, wire access port; 38, limit channel. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] The embodiment of the present application discloses a micro-angle swing control structure based on a thrombelastograph.

[0035] Reference Figure 1 and Figure 2 A micro-angle swing control structure based on a thromboelastogram includes an outer shell 1, a blood cup 2 arranged in the outer shell 1, and a swing mechanism 3 arranged in the outer shell 1, wherein the swing mechanism 3 includes a fixed seat 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 installation opening 11 , which communicates with the inside and outside of the outer shell 1 . A fixing seat 31 is coaxially fixed in the outer shell 1 , a support bearing 311 is arranged in the fixing seat 31 , and a connecting shaft 32 is vertically passed through the support bearing 311 .

[0037] Reference Figure 1 and Figure 2 The blood cup 2 includes a constant temperature cup groove 21 and a cup body 22. The constant temperature cup groove 21 is located above the fixing seat 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 is in contact with 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 clamped in the constant temperature cup groove 21. In other feasible embodiments, the constant temperature cup groove 21 can also be heated and kept at a constant temperature by any constant temperature method used by the sampling cup in the prior art.

[0038] Reference Figure 1 and Figure 2 The connecting shaft 32 is coaxially arranged at the bottom of the blood cup 2 and penetrates the fixing seat 31. The top of the connecting shaft 32 is coaxially fixed to the bottom of the constant temperature cup groove 21. A limiting platform 312 for limiting the constant temperature cup groove 21 is provided in the fixing seat 31. The limiting platform 312 is located above the supporting bearing 311 and is annular. The inner diameter of the limiting platform 312 is greater than the outer diameter of the constant temperature cup groove 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 in the fixed seat 31. The swing assembly 33 includes a mounting block 331 and an electromagnet 332. The mounting block 331 is arranged below the fixed seat 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 arranged in the through hole 35. The connecting shaft 32 is coaxially inserted in the mounting ring 36 and is tightly matched 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 3There are two electromagnets 332, both of which are arranged in the installation cavity 34. A wire access port 37 is provided on the outer wall of the installation block 331, and the wire access port 37 is connected to the installation cavity 34. The two electromagnets 332 are driven in the same direction, and a limited position channel 38 is formed between the two electromagnets 332. The end of the swing rod 361 away from the installation ring 36 is located in the limited position channel 38. When the electromagnet 332 is connected to the current, the magnetic field generated by the two electromagnets 332 drives the swing rod 361 to rotate, and the swing direction of the swing rod 361 is controlled by controlling the direction of the electromagnetic coil, and the precise control of the micro-angle swing is realized by cooperating with the limited position channel 38. 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 this position after power failure.

[0041] Reference Figure 1 , Figure 2 and Figure 3 During the test, the cup body 22 holds the blood sample, and the constant temperature cup tank 21 keeps the cup body 22 at the temperature required for the test. When the current is connected, the electromagnet 332 generates a magnetic field, and the magnetic field drives the mounting ring 36 to rotate. The rotation of the mounting ring 36 drives the connecting shaft 32 to rotate, and the blood cup 2 is swung by electromagnetic drive. The structure is simple, the assembly process is simplified, thereby reducing the cost, and it is more conducive to mass production. The same-direction driving method is adopted, so that 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 realizing the control of the swing angle of the swing rod 361, and the repeated positioning accuracy of each swing is high, thereby improving the accuracy of subsequent measurements, thereby improving the convenience of using the thromboelastography instrument and the accuracy of detection.

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

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

[0044] During testing, the cup body 22 holds the blood sample, and the constant temperature cup tank 21 allows the cup body 22 to maintain the temperature required for testing. When current is connected, the electromagnet 332 generates a magnetic field, and the magnetic field drives the mounting ring 36 to rotate. The rotation of the mounting ring 36 drives the connecting shaft 32 to rotate, and the blood cup 2 is swung by electromagnetic drive. The structure is simple, and the assembly process is simplified, thereby reducing costs and being more conducive to mass production. The same-direction driving method is adopted, so that 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 realizing the control of the swing angle of the swing rod 361, and the repeated positioning accuracy of each swing is high, thereby improving the accuracy of subsequent measurements, thereby improving the convenience of using the thromboelastography instrument and the accuracy of detection.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A micro-angle swing control structure based on a thromboelastograph, characterized in that: The invention comprises an outer shell (1), a blood cup (2) arranged in the outer shell (1), and a swing mechanism (3) arranged in the outer shell (1); the swing mechanism (3) comprises a fixed seat (31), a connecting shaft (32) and a swing component (33); the fixed seat (31) is fixed in the outer shell (1); the connecting shaft (32) is coaxially arranged at the bottom of the blood cup (2) and penetrates in the fixed seat (31); and the swing component (33) is used to control the swing of the connecting shaft (32) in the fixed seat (31).

2. According to claim 1, a micro-angle swing control structure based on a thromboelastograph is characterized in that: The swing assembly (33) comprises: A mounting block (331), the mounting block (331) being arranged below the fixing seat (31), the mounting block (331) having a through hole (35) penetrating the upper and lower surfaces of the mounting block (331), a mounting ring (36) being rotatably arranged in the through hole (35), the connecting shaft (32) being coaxially inserted in the mounting ring (36) and tightly fitted with the mounting ring (36); The electromagnet (332) is arranged in the mounting block (331). When the electromagnet (332) is connected to a current, the magnetic field generated by the electromagnet (332) drives the mounting ring (36) to rotate.

3. The micro-angle swing control structure based on thromboelastometry according to claim 2, characterized in that: A swing rod (361) is fixedly provided on the mounting ring (36), and 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 thromboelastometry according to claim 3, characterized in that: Two electromagnets (332) are provided, and the two electromagnets (332) are both arranged in the mounting block (331) and driven in the same direction. A limiting channel (38) is formed between the two electromagnets (332), and one 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 thromboelastometry according to claim 2, characterized in that: The mounting block (331) has a mounting cavity (34) therein, the electromagnet (332) is located in the mounting cavity (34), and the outer wall of the mounting block (331) has a wire access port (37), the wire access port (37) being in communication with the mounting cavity (34).

6. The micro-angle swing control structure based on thromboelastometry according to claim 1, characterized in that: The blood holding cup (2) comprises a constant temperature cup groove (21) and a cup body (22); the connecting shaft (32) is coaxially fixed to the bottom of the constant temperature cup groove (21); and the cup body (22) is snap-fitted into the constant temperature cup groove (21).

7. The micro-angle swing control structure based on thromboelastometry according to claim 6, characterized in that: A support bearing (311) is disposed inside the fixing seat (31), and the connecting shaft (32) is inserted into the support bearing (311).

8. The micro-angle swing control structure based on thromboelastometry according to claim 7, characterized in that: A limiting platform (312) for limiting the position of the thermostatic cup slot (21) is arranged inside the fixing seat (31); the limiting platform (312) is annular and has an inner diameter greater than the outer diameter of the thermostatic cup slot (21).

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