A medical image diagnosis apparatus

Abstract

The application belongs to the technical field of radio diagnosis, and particularly relates to a medical image diagnosis device which comprises a detection part, a transmitting mechanism, a circulating mechanism, a control mechanism and an absorbing mechanism. The detection part comprises a bearing table, a gradient coil shell, a supporting plate and a headrest shell. The supporting plate is slidingly installed on the upper end surface of the bearing table, and the headrest shell is fixedly installed on the upper end of the supporting plate. The transmitting mechanism comprises a radio frequency coil shell and a heat exchange plate. The radio frequency coil shell is fixedly installed in the headrest shell, and the heat exchange plate is fixedly installed on the outer wall of the radio frequency coil shell. The circulating mechanism comprises a buffer tank, a cooling tank and a heat exchange pipe. The heat exchange pipe is fixedly installed in the heat exchange plate. The inner cavity cooling liquid of the heat exchange pipe enters the inner cavity of the buffer tank and then enters the inner cavity of the cooling tank. Through the cooperation of the above structure, when the radio frequency coil generates a magnetic field, the maintenance frequency of the cooling electronic elements in the cooling tank is reduced, the stability of the radio frequency coil is maintained, and the detection quality is improved.

Description

Technical Field

[0001] This invention belongs to the field of radiological diagnostic technology, specifically a medical imaging diagnostic device. Background Technology

[0002] Magnetic resonance imaging (MRI) is a cutting-edge medical imaging technology that utilizes the principles of magnetic resonance. It has excellent diagnostic capabilities for solid organs such as the brain, thyroid, liver, gallbladder, spleen, kidney, pancreas, adrenal glands, uterus, ovaries, and prostate, as well as the heart and major blood vessels. Compared with other auxiliary examination methods, MRI has advantages such as more imaging parameters, faster scanning speed, higher tissue resolution, and clearer images. It can help doctors "see" early lesions that are not easily detected and has become a powerful tool for early screening of tumors, heart disease, and cerebrovascular diseases.

[0003] In nuclear magnetic resonance (NMR) technology, the radio frequency (RF) coil is a key component, responsible for transmitting RF pulses to excite atomic nuclei to resonate and receiving magnetic resonance signals. Its performance directly affects the quality and accuracy of NMR imaging. Currently, water cooling has become one of the mainstream choices to cope with the large amount of heat generated by the RF coil during operation.

[0004] Because the RF coil generates heat continuously during operation, the cooling components must operate at full load for extended periods to maintain a stable magnetic field. This high-intensity operation puts immense pressure on the cooling components, making them highly susceptible to various malfunctions. Furthermore, as the heat dissipation medium of the water-cooling system, the coolant's chemical composition gradually changes over time and with increased usage frequency, leading to the precipitation of flocculents. These flocculents adhere to the inner walls of the cooling pipes, narrowing the coolant's flow path and reducing cooling efficiency. Additionally, they may circulate with the coolant into the precision heat dissipation components of the RF coil, causing wear and tear on its internal structure, affecting heat dissipation, and consequently impacting the stability of the magnetic field generated by the RF coil. Once flocculents are detected in the coolant, it must be replaced immediately, undoubtedly increasing the frequency of maintenance on the RF coil's heat dissipation components.

[0005] Therefore, the present invention provides a medical imaging diagnostic device. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a medical imaging diagnostic device according to the present invention, comprising a detection unit, a transmitting mechanism, a circulating mechanism, a control mechanism and an absorption mechanism;

[0008] The testing unit includes a support platform, a gradient coil housing, a support plate, and a headrest housing. The support plate is slidably mounted on the upper surface of the support platform, and the headrest housing is fixedly mounted on the upper end of the support plate.

[0009] The transmitting mechanism includes an RF coil housing and a heat exchange plate. The RF coil housing is fixedly installed inside the headrest housing, and the heat exchange plate is fixedly installed on the outer wall of the RF coil housing.

[0010] The circulation mechanism includes a buffer tank, a cooling tank, and heat exchange tubes. The heat exchange tubes are fixedly installed inside the heat exchange plate. After the coolant in the inner cavity of the heat exchange tubes enters the buffer tank, it enters the inner cavity of the cooling tank. The inner cavity of the cooling tank is connected to the other end of the heat exchange tubes.

[0011] The control mechanism is used to stir the coolant inside the cooling tank when the coolant flows inside the heat exchange tube;

[0012] The absorption mechanism is used to reduce the content of flocculent impurities inside the coolant when the coolant enters the cooling chamber.

[0013] Preferably, a control pump is provided on one side of the cooling box, the input end of the control pump extends into the inner cavity of the cooling box, and the output end of the control pump is connected to the heat exchange tube.

[0014] A control plate is fixedly installed on the inner wall of the cooling box. The cold end of the control plate is located in the inner cavity of the cooling box and is fixedly installed with a heat absorption plate. The hot end of the control plate is located on the outer wall of the cooling box and is fixedly installed with a heat dissipation plate.

[0015] Preferably, the control mechanism includes a mounting cover, a water impeller, and a stirring shaft. The mounting cover is fixedly installed in the inner cavity of the cooling box and has an inlet and an outlet. The outlet of the mounting cover is connected to the input end of the control pump.

[0016] The water turbine blades are rotatably mounted on the inner wall of the mounting cover, with one axial end of the water turbine blades extending to the outer wall of the mounting cover and fixedly connected to the center position of the axial end of the stirring shaft.

[0017] Preferably, the buffer box is fixedly installed on the upper surface of the cooling box, and the bottom of the buffer box has a communication hole that communicates with the inner cavity of the cooling box. An elastic membrane is fixedly installed in the communication hole, and a liquid level valve is fixedly installed on the bottom surface of the buffer box. The buffer box is connected to the inner cavity of the cooling box through the liquid level valve.

[0018] Preferably, the absorption mechanism includes a support cover and a filter cylinder. The support cover is fixedly installed on the inner wall of the cooling box, and the upper opening of the support cover is connected to the output end of the liquid level valve. The outer wall of the support cover is a perforated plate, and the filter cylinder is fixedly installed on the inner wall of the support cover.

[0019] Preferably, an installation plate is fixedly installed on the upper end face of the installation cover, and an elastic block is fixedly installed on the inner wall of the installation plate, with a cavity provided in the inner wall of the elastic block;

[0020] The outer wall of the elastic block is fixedly equipped with an inlet pipe and a drain pipe. The inlet pipe is used to inject coolant into the elastic block, and the drain pipe is used to discharge the coolant from the inner cavity of the elastic block.

[0021] A follower ring is slidably installed on the outer wall of the support cover. The inner cavity of the follower ring is connected to the drain pipe, and the inner wall of the follower ring is provided with a drain hole facing the filter cartridge.

[0022] Preferably, a squeezing cam is fixedly installed on the outer wall of the stirring shaft, and the radial outer wall of the squeezing cam slides against the outer wall of the elastic block.

[0023] Preferably, a guide rod is fixedly installed on the inner wall of the cooling box, and a connecting arm is slidably installed on the outer wall of the guide rod, with one end of the connecting arm fixedly connected to the outer wall of the follower ring;

[0024] A buoyancy block is slidably installed on the outer wall of the guide rod, and the upper end face of the buoyancy block is fixedly connected to the bottom face of the connecting arm.

[0025] Preferably, a drive shaft is fixedly installed on the inner wall of the support cover, the bottom of the drive shaft is fixedly connected to the axial end of the stirring shaft, and one end of the drive shaft extends into the inner cavity of the support cover and is fixedly installed with a storage cylinder.

[0026] The outer wall of the storage cylinder is fixedly equipped with a scraper and a guide plate. The filter cylinder is made of elastic material, and the outer walls of the scraper and the guide plate slide against the inner wall of the filter cylinder.

[0027] The outer wall of the storage cylinder has a sewage inlet, and the position of the sewage inlet corresponds to the position of the guide plate.

[0028] Preferably, an adsorption tube is fixedly installed on the inner wall of the storage tube, the adsorption tube has holes inside, and the outer wall has grooves.

[0029] The inner wall of the collection tube is equipped with an elastic sheet, one end of which is fixedly connected to the inner wall of the collection tube and used to seal the sewage inlet in one direction.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. This invention incorporates a buffer tank and a cooling tank. After the heat exchange plate heats the coolant in the heat exchange tube, it is discharged into the inner cavity of the buffer tank. At this point, the coolant dissipates heat naturally through the buffer tank, achieving initial heat dissipation after heat absorption. This reduces the workload of the cooling tank. Simultaneously, an absorption mechanism is incorporated to reduce the content of flocculent impurities in the coolant as it enters the inner cavity of the cooling tank. By reducing the flocculent impurities in the coolant, the heat exchange efficiency of the coolant can be maintained, thereby extending the coolant replacement cycle and reducing the maintenance frequency of the RF coil cooling location. When the RF coil generates a magnetic field, the maintenance frequency of the cooling electronic components inside the cooling tank is also reduced, maintaining the stability of the RF coil operation and thus improving the detection quality.

[0032] 2. This invention incorporates a buoyancy block and a follower ring. The inner wall of the follower ring has a drain hole facing the filter cartridge. The buoyancy of the buoyancy block and the gravity of the follower ring work together to control the reciprocating sliding of the follower ring as the liquid level inside the cooling chamber changes. This backwashing cleans different parts of the filter cartridge, improving cleaning efficiency. Simultaneously, when the stirring shaft rotates, the liquid level inside the cooling chamber fluctuates, causing the height of the buoyancy block to fluctuate accordingly. This causes the follower ring to reciprocate within the fluctuation range. During backwashing of the filter cartridge, the follower ring is controlled to maintain the same motion state, further promoting the cleaning efficiency of the filter cartridge, maintaining the removal efficiency of flocculent impurities in the coolant, reducing the maintenance cycle of the RF coil's heat dissipation components, and maintaining the heat dissipation efficiency of the RF coil, thus ensuring the stability of the magnetic field generated by the RF coil. Attached Figure Description

[0033] The invention will now be further described with reference to the accompanying drawings.

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0035] Figure 2 This is a schematic diagram of the installation of the radio frequency coil housing in this invention.

[0036] Figure 3 This is a schematic diagram of the installation of the elastic membrane in this invention.

[0037] Figure 4 This is a schematic diagram of the control plate in this invention.

[0038] Figure 5 This is a schematic diagram of the internal structure of the cooling box in this invention.

[0039] Figure 6 This is a schematic diagram of the installation of the mounting cover in this invention.

[0040] Figure 7 This is a schematic diagram of the structure of the water turbine blade in this invention.

[0041] Figure 8 This is a schematic diagram of the installation of the extrusion cam in this invention.

[0042] Figure 9 This is a schematic diagram of the internal structure of the support cover in this invention.

[0043] Figure 10 This is a schematic diagram of the installation of the elastic sheet in this invention.

[0044] In the diagram: 1. Gradient coil housing; 2. Support plate; 3. Support platform; 4. Headrest housing; 5. Control pump; 6. Heat exchange plate; 7. RF coil housing; 8. Buffer box; 9. Cooling box; 10. Control plate; 11. Heat sink; 12. Elastic membrane; 13. Liquid level valve; 14. Heat absorber plate; 15. Support cover; 16. Stirring shaft; 17. Guide rod; 18. Mounting plate; 19. Mounting cover; 20. Buoyancy block; 21. Storage cylinder; 22. Water impeller; 23. Follower ring; 24. Connecting arm; 25. Extrusion cam; 26. Elastic block; 27. Inlet pipe; 28. Drain pipe; 29. ​​Filter cylinder; 30. Scraper; 31. Drive shaft; 32. Guide plate; 33. Adsorption cylinder; 34. Elastic sheet; 35. Heat exchange tube. Detailed Implementation

[0045] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0046] like Figures 1 to 10 As shown, the medical imaging diagnostic device of the present invention includes a detection unit, a transmitting mechanism, a circulating mechanism, a control mechanism, and an absorption mechanism.

[0047] The detection unit includes a support stage 3, a gradient coil housing 1, a support plate 2, and a headrest housing 4. The gradient coil is located inside the gradient coil housing 1. The gradient coil is a coil used in the MRI system to generate spatial transformations. Its function is to create a magnetic field gradient in space by changing the strength of the magnetic field, so that the magnetic field varies at different locations, thereby achieving spatial encoding. This allows the MRI system to distinguish signals from different locations. In the MRI system, the frequency of the nuclear magnetic resonance signal is directly related to the strength of the magnetic field. The magnetic field gradient generated by the gradient coil enables hydrogen atoms at different locations to emit signals of different frequencies at the same time, thereby distinguishing different spatial regions by different frequencies. The gradient coil controls the change of magnetic field strength in different directions by applying different magnetic field gradients on the x-axis, y-axis, and z-axis. Each direction of the gradient coil corresponds to a different spatial encoding process, realizing localization and generating images.

[0048] The support plate 2 is slidably installed on the upper surface of the support platform 3, and the headrest shell 4 is fixedly installed on the upper end of the support plate 2. During the test, the patient lies on the support plate 2 with his head on the headrest shell 4. As the support plate 2 moves, the patient is controlled to enter the gradient coil shell 1.

[0049] The transmitting mechanism includes a radio frequency coil housing 7 and a heat exchange plate 6. The radio frequency coil housing 7 is fixedly installed inside the headrest housing 4. The radio frequency coil is a component in the MRI system used to transmit radio frequency pulses and receive echo signals. The radio frequency coil is mainly responsible for exciting hydrogen atoms in the human body and receiving the signals emitted by these atoms after being excited by the radio frequency pulse. During an MRI scan, the radio frequency coil emits a short radio frequency pulse, which causes the hydrogen nuclei in the human body to jump from their initial low-energy state to a higher energy state. When the radio frequency pulse stops, the hydrogen nuclei return from the excited state to their original state, releasing excess energy.

[0050] The heat exchange plate 6 is fixedly installed on the outer wall of the RF coil housing 7. The heat generated when the RF coil is working is conducted through the heat exchange plate 6 (copper plate is selected) to reduce the temperature of the RF coil during operation.

[0051] The circulation mechanism includes a buffer box 8, a cooling box 9, and a heat exchange tube 35. The heat exchange tube 35 is fixedly installed inside the heat exchange plate 6, and the coolant is controlled to flow in the inner cavity of the heat exchange tube 35, so as to remove the heat energy when the heat exchange plate 6 conducts the heat generated when the radio frequency coil is working.

[0052] The coolant inside the heat exchange tube 35 enters the buffer tank 8 and then the cooling chamber 9. The cooling chamber 9 is connected to the other end of the heat exchange tube 35. The cooling chamber 9 is used to cool the coolant. The buffer tank 8 is made of copper. After the heat exchange plate 6 heats the coolant inside the heat exchange tube 35, it is discharged into the inner cavity of the buffer tank 8. At this time, the coolant is naturally cooled by the buffer tank 8, which achieves the initial heat dissipation of the coolant after heat absorption, thereby reducing the cooling workload of the cooling chamber 9. When the magnetic field is generated by the radio frequency coil, the maintenance frequency of the electronic components cooling inside the cooling chamber 9 is reduced, the stability of the radio frequency coil operation is maintained, and the detection quality is improved.

[0053] The control mechanism is used to stir the coolant inside the cooling box 9 when the coolant flows in the inner cavity of the heat exchange tube 35. Stirring the coolant inside the cooling box 9 can make the coolant cool evenly, maintain the stability of cooling and heat dissipation of the radio frequency coil, and thus maintain the stability of the magnetic field.

[0054] The absorption mechanism is used to reduce the content of flocculent impurities inside the coolant when the coolant enters the cooling chamber 9 from the inner cavity of the buffer tank 8. As the coolant is used, flocculent matter will gradually precipitate in the coolant. In order to maintain the stability of the coolant heat exchange, the coolant needs to be replaced. By reducing the flocculent impurities in the coolant, the heat exchange efficiency of the coolant can be maintained, thereby extending the coolant replacement cycle and reducing the maintenance frequency of the RF coil cooling position.

[0055] As a preferred embodiment of the present invention, a control pump 5 is provided on one side of the cooling box 9. The control pump 5 is a common micro water pump. The input end of the control pump 5 extends into the inner cavity of the cooling box 9, and the output end of the control pump 5 is connected to the heat exchange tube 35. The control pump 5 is the power source for the circulation of coolant.

[0056] A control plate 10 is fixedly installed on the inner wall of the cooling box 9. The control plate 10 is a semiconductor refrigeration plate with a hot end and a cold end.

[0057] The cold end of the control plate 10 is located in the inner cavity of the cooling box 9 and is fixedly installed with a heat absorption plate 14. The hot end of the control plate 10 is located on the outer wall of the cooling box 9 and is fixedly installed with a heat dissipation plate 11. Both the heat absorption plate 14 and the heat dissipation plate 11 are copper plates. The cooling is achieved by the cold end of the control plate 10. After the coolant enters the inner cavity of the cooling box 9, the coolant is cooled, which keeps the RF coil cool and thus maintains the stability of the magnetic field generated by the RF coil.

[0058] The heat sink 11 is equipped with an exhaust fan on its exterior. The exhaust fan is used to increase the airflow speed on the outer wall of the heat sink 11, thereby maintaining the heat dissipation of the hot end of the control plate 10.

[0059] The control mechanism includes a mounting cover 19, a water turbine blade 22, and a stirring shaft 16. The mounting cover 19 is fixedly installed in the inner cavity of the cooling box 9 and has an inlet and an outlet so that the coolant inside the cooling box 9 can enter the mounting cover 19 and be discharged from the inner cavity of the mounting cover 19.

[0060] The outlet of the mounting cover 19 is connected to the input of the control pump 5. When the coolant flows inside the cooling box 9, it enters through the inlet outside the mounting cover 19 and then exits through the outlet.

[0061] The water turbine blade 22 is rotatably mounted on the inner wall of the mounting cover 19. When the coolant enters through the inlet outside the mounting cover 19 and is then discharged through the outlet, the water turbine blade 22 is affected by the water flow and thus rotates.

[0062] One axial end of the water turbine blade 22 extends to the outer wall of the mounting cover 19 and is fixedly connected to the center of the axial end of the stirring shaft 16. The outer wall of the stirring shaft 16 is provided with stirring fins. When the stirring shaft 16 rotates, it stirs the coolant inside the cooling box 9 so that the coolant is cooled evenly inside the cooling box 9. At the same time, the rotation speed of the stirring shaft 16 is synchronized with the drainage flow rate of the control pump 5.

[0063] In a preferred embodiment of the present invention, the buffer tank 8 is fixedly installed on the upper end face of the cooling tank 9. The bottom of the buffer tank 8 is provided with a communication hole that communicates with the inner cavity of the cooling tank 9. An elastic membrane 12 is fixedly installed in the communication hole. When the control pump 5 is working, the coolant circulates in the inner cavity of the heat exchange tube 35, the buffer tank 8 and the cooling tank 9, and the inner cavity of the heat exchange tube 35, the buffer tank 8 and the cooling tank 9 form a sealed chamber. When the coolant is discharged from the inner cavity of the cooling tank 9 and the coolant is buffered in the inner cavity of the buffer tank 8, the internal pressure of the inner cavity of the cooling tank 9 decreases due to the discharge of the coolant. The elastic membrane 12 can prevent the cooling tank 9 from deforming and improve the stability of the structure.

[0064] A liquid level valve 13 is fixedly installed on the bottom surface of the buffer tank 8. The buffer tank 8 is connected to the inner cavity of the cooling tank 9 through the liquid level valve 13. The liquid level valve 13 is a solenoid valve with a liquid level threshold set. When the liquid level in the inner cavity of the buffer tank 8 rises to the liquid level threshold, the liquid level valve 13 is turned on, thereby discharging the coolant that has been initially cooled inside the buffer tank 8 into the inner cavity of the cooling tank 9.

[0065] The absorption mechanism includes a support cover 15 and a filter cartridge 29. The support cover 15 is fixedly installed on the inner wall of the cooling box 9, and the upper opening of the support cover 15 is connected to the output end of the liquid level valve 13. When the liquid level valve 13 is turned on, the coolant in the buffer box 8 enters the interior of the support cover 15 through the liquid level valve 13.

[0066] The outer wall of the support cover 15 is a perforated plate, and the filter cylinder 29 is fixedly installed on the inner wall of the support cover 15. The support cover 15 supports the filter cylinder 29, and the filter cylinder 29 filters the flocculent impurities precipitated in the coolant and retains the flocculent impurities in the inner cavity of the filter cylinder 29. When the coolant circulates, the content of flocculent impurities in the coolant participating in the circulation is reduced, thereby maintaining the cooling efficiency of the radio frequency coil and achieving the effect of reducing the maintenance frequency.

[0067] In a preferred embodiment of the present invention, an mounting plate 18 is fixedly mounted on the upper end face of the mounting cover 19, and an elastic block 26 is fixedly mounted on the inner wall of the mounting plate 18. The elastic block 26 is made of rubber and has a cavity in its inner wall. After pressing the elastic block 26, the elastic block 26 is reset by its own elastic force.

[0068] An inlet pipe 27 and a drain pipe 28 are fixedly installed on the outer wall of the elastic block 26. Both the inlet pipe 27 and the drain pipe 28 are equipped with one-way valves. The inlet pipe 27 is used to inject coolant into the elastic block 26, and the drain pipe 28 is used to discharge coolant from the inner cavity of the elastic block 26. The conduction direction of the inlet pipe 27 and the drain pipe 28 is controlled by the one-way valves. By repeatedly pressing the elastic block 26 in conjunction with the elastic force of the elastic block 26 itself, the inlet pipe 27 draws in the coolant inside the cooling box 9 and discharges it through the drain pipe 28.

[0069] A follower ring 23 is slidably provided on the outer wall of the support cover 15. The follower ring 23 has a cavity inside. The inner cavity of the follower ring 23 is connected to the drain pipe 28. The inner wall of the follower ring 23 has a drain hole facing the filter cartridge 29. The drain pipe 28 inputs coolant into the inner cavity of the follower ring 23 and then discharges it through the drain hole, thereby rinsing the filter cartridge 29 from the outside to the inside, preventing flocculent impurities from adhering to the inner wall of the filter cartridge 29, maintaining the filtration efficiency of the filter cartridge 29, and promoting the cooling efficiency of the radio frequency coil.

[0070] A squeezing cam 25 is fixedly installed on the outer wall of the stirring shaft 16. The radial outer wall of the squeezing cam 25 slides against the outer wall of the elastic block 26. When the control pump 5 draws coolant from the cooling tank 9, it drives the stirring shaft 16 to rotate. At this time, the squeezing cam 25 rotates synchronously to reciprocate and squeeze the elastic block 26, thereby controlling the coolant in the cooling tank 9 to flush the filter cartridge 29.

[0071] In this embodiment, by extracting the coolant from the bottom of the cooling box 9 and then discharging it through the follower ring 23, not only is the backflushing cleaning of the filter cartridge 29 achieved, but the flow of coolant inside the cooling box 9 is also promoted, the stirring efficiency is improved, and the uniform cooling of the coolant inside the cooling box 9 is maintained in conjunction with the rotation of the stirring shaft 16.

[0072] A guide rod 17 is fixedly installed on the inner wall of the cooling box 9, and a connecting arm 24 is slidably installed on the outer wall of the guide rod 17. One end of the connecting arm 24 is fixedly connected to the outer wall of the follower ring 23. By setting the guide rod 17 in conjunction with the connecting arm 24, the sliding stability of the follower ring 23 is improved.

[0073] After the liquid level valve 13 is closed, the liquid level inside the cooling tank 9 gradually decreases as the control pump 5 operates. After the liquid level valve 13 is opened, the liquid level inside the cooling tank 9 gradually increases. As the coolant is buffered and released in the buffer tank 8, the liquid level inside the cooling tank 9 rises and falls repeatedly.

[0074] A buoyancy block 20 is slidably installed on the outer wall of the guide rod 17. The upper end face of the buoyancy block 20 is fixedly connected to the bottom face of the connecting arm 24. The density of the buoyancy block 20 is not higher than the density of the coolant. Through the buoyancy of the buoyancy block 20 and the gravity of the follower ring 23, the follower ring 23 is controlled to slide back and forth when the liquid level in the inner cavity of the cooling box 9 changes (in order to adapt to the sliding drain pipe 28 of the follower ring 23 being an elastic hose), thereby backwashing and cleaning different positions of the filter cartridge 29, improving cleaning efficiency. At the same time, when the stirring shaft 16 rotates, the liquid level of the coolant inside the cooling box 9 fluctuates. At this time, the height of the buoyancy block 20 fluctuates accordingly, causing the follower ring 23 to slide back and forth within the fluctuation range. When backwashing the filter cartridge 29, the follower ring 23 is controlled to maintain the same motion state, thereby promoting the cleaning efficiency of the filter cartridge 29, maintaining the removal efficiency of flocculent impurities in the coolant, reducing the maintenance cycle of the RF coil heat dissipation part, and maintaining the heat dissipation efficiency of the RF coil, which is used to maintain the stability of the magnetic field generated by the RF coil.

[0075] In a preferred embodiment of the present invention, a drive shaft 31 is fixedly installed on the inner wall of the support cover 15. The bottom of the drive shaft 31 is fixedly connected to the axial end of the stirring shaft 16. During the rotation of the stirring shaft 16, the drive shaft 31 rotates synchronously.

[0076] One end of the drive shaft 31 extends into the inner cavity of the support cover 15 and is fixedly installed with a storage cylinder 21. The storage cylinder 21 has a hollow structure. When the stirring shaft 16 rotates, the storage cylinder 21 is driven to rotate synchronously through the drive shaft 31.

[0077] The outer wall of the storage cylinder 21 is fixedly equipped with a scraper 30 and a guide plate 32. The filter cylinder 29 is made of elastic material (elastic non-woven filter fabric). The outer walls of the scraper 30 and the guide plate 32 slide against the inner wall of the filter cylinder 29. When the storage cylinder 21 rotates, the inner wall of the filter cylinder 29 is scraped by the scraper 30 and the guide plate 32, thereby improving the cleaning efficiency of the filter cylinder 29 itself.

[0078] The outer wall of the collection cylinder 21 is provided with a sludge inlet, the position of which corresponds to the position of the guide plate 32. The sludge inlet is located at the connection between the guide plate 32 and the collection cylinder 21. The guide plate 32 is inclined. When the collection cylinder 21 rotates, the guide plate 32 provides radial thrust to the flocculent impurities, so that the flocculent impurities can enter the interior of the collection cylinder 21 (the upper part of the collection cylinder 21 is made of mesh plate material), which is used to prevent the flocculent impurities from accumulating in the filter cylinder 29.

[0079] An adsorption cylinder 33 is fixedly installed on the inner wall of the storage cylinder 21. The adsorption cylinder 33 has holes inside and grooves on its outer wall. The adsorption cylinder 33 is made of sponge material and adsorbs flocculent impurities through its internal holes to prevent impurities inside the storage cylinder 21 from being discharged again.

[0080] To further prevent the discharge of flocculent impurities from inside the collection cylinder 21, an elastic sheet 34 is provided on the inner wall of the collection cylinder 21. One end of the elastic sheet 34 is fixedly connected to the inner wall of the collection cylinder 21 and is used to close the inlet in one direction. The elastic sheet 34 and the inlet in cooperation form a one-way valve structure. When the collection cylinder 21 stops rotating, the inlet inlet is kept closed to prevent the discharge of flocculent impurities, maintain the heat exchange efficiency of the circulating coolant, and promote the generation of a stable magnetic field by the radio frequency coil.

[0081] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0082] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0083] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical imaging diagnostic device, characterized in that: It includes a detection unit, a launching mechanism, a circulation mechanism, a control mechanism, and an absorption mechanism; The detection unit includes a support platform (3), a gradient coil housing (1), a support plate (2), and a headrest housing (4). The support plate (2) is slidably mounted on the upper surface of the support platform (3), and the headrest housing (4) is fixedly mounted on the upper end of the support plate (2). The transmitting mechanism includes a radio frequency coil housing (7) and a heat exchange plate (6). The radio frequency coil housing (7) is fixedly installed inside the headrest housing (4), and the heat exchange plate (6) is fixedly installed on the outer wall of the radio frequency coil housing (7). The circulation mechanism includes a buffer tank (8), a cooling tank (9), and a heat exchange tube (35). The heat exchange tube (35) is fixedly installed inside the heat exchange plate (6). The coolant in the inner cavity of the heat exchange tube (35) enters the inner cavity of the cooling tank (9) after entering the buffer tank (8). The inner cavity of the cooling tank (9) is connected to the other end of the heat exchange tube (35). The control mechanism is used to stir the coolant inside the cooling tank (9) when the coolant flows in the inner cavity of the heat exchange tube (35); The absorption mechanism is used to reduce the content of flocculent impurities inside the coolant when the coolant in the inner cavity of the buffer tank (8) enters the inner cavity of the cooling tank (9); The control mechanism includes a mounting cover (19), a water turbine blade (22), and a stirring shaft (16). The mounting cover (19) is fixedly installed in the inner cavity of the cooling box (9) and has an inlet and an outlet. The outlet of the mounting cover (19) is connected to the input end of the control pump (5). The water turbine blade (22) is rotatably mounted on the inner wall of the mounting cover (19), and one axial end of the water turbine blade (22) extends to the outer wall of the mounting cover (19) and is fixedly connected to the center position of the axial end of the stirring shaft (16). The buffer box (8) is fixedly installed on the upper surface of the cooling box (9). The bottom of the buffer box (8) is provided with a communication hole that communicates with the inner cavity of the cooling box (9). An elastic membrane (12) is fixedly installed in the communication hole. A liquid level valve (13) is fixedly installed on the bottom surface of the buffer box (8). The buffer box (8) communicates with the inner cavity of the cooling box (9) through the liquid level valve (13). The absorption mechanism includes a support cover (15) and a filter cylinder (29). The support cover (15) is fixedly installed on the inner wall of the cooling box (9), and the upper opening of the support cover (15) is connected to the output end of the liquid level valve (13). The outer wall of the support cover (15) is a mesh plate, and the filter cylinder (29) is fixedly installed on the inner wall of the support cover (15).

2. The medical imaging diagnostic device according to claim 1, characterized in that: A control pump (5) is provided on one side of the cooling box (9). The input end of the control pump (5) extends into the inner cavity of the cooling box (9), and the output end of the control pump (5) is connected to the heat exchange tube (35). The inner wall of the cooling box (9) is fixedly installed with a control plate (10). The cold end of the control plate (10) is located in the inner cavity of the cooling box (9) and is fixedly installed with a heat absorption plate (14). The hot end of the control plate (10) is located in the outer wall of the cooling box (9) and is fixedly installed with a heat dissipation plate (11).

3. The medical imaging diagnostic device according to claim 1, characterized in that: An installation plate (18) is fixedly installed on the upper end face of the installation cover (19), and an elastic block (26) is fixedly installed on the inner wall of the installation plate (18). The inner wall of the elastic block (26) is provided with a cavity. The outer wall of the elastic block (26) is fixedly equipped with an inlet pipe (27) and a drain pipe (28). The inlet pipe (27) is used to inject coolant into the elastic block (26), and the drain pipe (28) is used to discharge the coolant from the inner cavity of the elastic block (26). The outer wall of the support cover (15) is slidably provided with a follower ring (23), the inner cavity of the follower ring (23) is connected to the drain pipe (28), and the inner wall of the follower ring (23) is provided with a drain hole facing the filter cylinder (29).

4. A medical imaging diagnostic device according to claim 3, characterized in that: The outer wall of the stirring shaft (16) is fixedly installed with a squeezing cam (25), and the radial outer wall of the squeezing cam (25) slides against the outer wall of the elastic block (26).

5. A medical imaging diagnostic device according to claim 4, characterized in that: A guide rod (17) is fixedly installed on the inner wall of the cooling box (9), and a connecting arm (24) is slidably installed on the outer wall of the guide rod (17). One end of the connecting arm (24) is fixedly connected to the outer wall of the follower ring (23). A buoyancy block (20) is slidably installed on the outer wall of the guide rod (17), and the upper end face of the buoyancy block (20) is fixedly connected to the bottom face of the connecting arm (24).

6. A medical imaging diagnostic device according to claim 5, characterized in that: A drive shaft (31) is fixedly installed on the inner wall of the support cover (15). The bottom of the drive shaft (31) is fixedly connected to the axial end of the stirring shaft (16). One end of the drive shaft (31) extends into the inner cavity of the support cover (15) and is fixedly installed with a storage cylinder (21). The outer wall of the storage cylinder (21) is fixedly equipped with a scraper (30) and a guide plate (32). The filter cylinder (29) is made of elastic material. The outer walls of the scraper (30) and the guide plate (32) slide against the inner wall of the filter cylinder (29). The outer wall of the storage tube (21) is provided with a sewage inlet, and the position of the sewage inlet corresponds to the position of the guide plate (32).

7. A medical imaging diagnostic device according to claim 6, characterized in that: An adsorption tube (33) is fixedly installed on the inner wall of the storage tube (21). The adsorption tube (33) has holes inside and grooves on its outer wall. The inner wall of the storage tube (21) is provided with an elastic sheet (34), one end of which is fixedly connected to the inner wall of the storage tube (21) and is used to unidirectionally seal the sewage inlet.

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