Magnetic resonance test system

Abstract

The invention discloses a magnetic resonance test system, which comprises a stimulation module, an adjusting module, a circulation module, a circulation medium and a main control module, and is characterized in that the stimulation module is used for being in contact with a tested part so as to apply pressure stimulation and temperature stimulation to the tested part and detect an actual pressure value and an actual temperature value of the tested part; the adjusting module is connected with the stimulation module and used for adjusting the output pressure and the output temperature of the stimulation module, the circulating module is connected with the stimulation module and the adjusting module and forms a closed loop with the stimulation module and the adjusting module, the circulating medium is arranged in the closed loop, and the circulating module drives the circulating medium to circularly flow in the closed loop. The main control module is used for conducting pressure and temperature, the main control module is electrically connected with the stimulation module, the adjusting module and the circulation module, and the main control module regulates and controls the output pressure and the output temperature of the adjusting module according to the actual pressure value and the actual temperature value fed back by the stimulation module so as to adjust the output pressure and the output temperature of the stimulation module.

Description

Technical Field

[0001] The present application relates to the field of nuclear magnetic resonance testing technology, and in particular to a magnetic resonance testing system. Background Art

[0002] With the rise of high-temporal-resolution functional magnetic resonance imaging technology, researchers are increasingly demanding multimodal physiological stimulation experiments in magnetic resonance environments. Currently, tactile stimulation is one of the main research methods in magnetic resonance imaging experiments. Tactile sensation is specifically divided into touch pressure, pain, and temperature. Among them, pressure stimulation is widely used to explore the functions of the sensory and motor systems. By applying different pressure stimuli, researchers can deeply observe the responses of different brain regions to tactile input, thereby revealing the working mechanisms of the sensory cortex and related neural networks. In addition, temperature stimulation, as another sensory stimulus of touch, is also of great significance for studying temperature perception and temperature conduction pathways.

[0003] Therefore, there is an urgent need for a system that can provide precise pressure and temperature stimulation simultaneously in a strong magnetic field environment. Summary of the Invention

[0004] An embodiment of the present application provides a magnetic resonance testing system that integrates pressure and temperature stimulation into the same contact module, allowing researchers to simultaneously observe and study the complex reactions caused by pressure and temperature stimulation during magnetic resonance imaging experiments.

[0005] In a first aspect, an embodiment of the present application provides a magnetic resonance testing system, comprising:

[0006] a stimulation module, configured to contact a test site to apply pressure stimulation and temperature stimulation to the test site, and to detect actual pressure and temperature values applied to the test site;

[0007] A regulating module, connected to the stimulation module, for regulating the output pressure and output temperature of the stimulation module;

[0008] a circulation module, connecting the stimulation module and the regulation module, and forming a closed loop with the stimulation module and the regulation module;

[0009] A circulating medium is provided in a closed loop, and a circulation module is capable of driving the circulating medium to circulate in the closed loop to transmit pressure and temperature; and

[0010] The main control module is electrically connected to the stimulation module, the regulation module and the circulation module respectively. The main control module regulates the output pressure and output temperature of the regulation module according to the actual pressure value and actual temperature value fed back by the stimulation module to adjust the output pressure and output temperature of the stimulation module.

[0011] In some embodiments, the stimulation module includes:

[0012] A stimulation capsule is used to contact the test site and form a closed loop with the stimulation module and the regulation module. The stimulation capsule elastically expands or contracts as the pressure of the circulating medium changes, and the temperature of the stimulation capsule changes as the temperature of the circulating medium changes;

[0013] The fixing component is connected to the stimulation capsule to fix the stimulation capsule to the test site.

[0014] In some embodiments, the stimulation module further comprises:

[0015] A pressure sensor, electrically connected to the main control module, for detecting the actual pressure value of the test part; and

[0016] The temperature sensor is electrically connected to the main control module and is used to detect the actual temperature value of the test part.

[0017] In some embodiments, the fixing assembly includes:

[0018] The strap body is used for detachable installation on the test part;

[0019] A grid structure is provided on the strap body, and the stimulation capsule is installed in the grid structure; and

[0020] The first connecting member includes a first patch and a second patch that are detachably arranged. The first patch and the second patch are respectively located at the two ends of the strap body. The first patch and the second patch cooperate to enable the strap body to be tightly wrapped around the test part. The first patch and the second patch are separated to enable the strap body to be loosened from the test part.

[0021] In some embodiments, the adjustment module includes:

[0022] a pressure regulating unit, electrically connected to the main control module, for regulating the output pressure of the stimulation module; and

[0023] The temperature regulating unit is electrically connected to the main control module and is connected in series with the pressure regulating unit, and is used to regulate the output temperature of the stimulation module;

[0024] Among them, the pressure regulating unit, the temperature regulating unit, the circulation module and the stimulation module form a closed loop.

[0025] In some embodiments, the circulating medium is a liquid medium, and the pressure regulating unit includes:

[0026] The piston assembly includes a cylinder body and a piston rod, wherein the cylinder body is connected to the circulation module and contains a liquid medium, and the piston rod is movably disposed in the cylinder body to adjust the pressure of the liquid medium in the cylinder body; and

[0027] The driving motor is connected to the piston rod to drive the piston rod to move. The driving motor is electrically connected to the main control module, and the main control module controls the operation of the driving motor to drive the piston rod to move.

[0028] In some embodiments, the temperature regulating unit comprises:

[0029] A heating component is electrically connected to the main control module;

[0030] A refrigeration component is electrically connected to the main control module; and

[0031] The heat exchange pipeline includes a charging flow path and a discharging flow path thermally connected to the charging flow path. The heating component and the cooling component are both arranged in the charging flow path. The heating component and the cooling component are respectively used to heat or cool the charging flow path. The discharging flow path is connected in series to the closed loop and is used to perform heat exchange with the charging flow path.

[0032] In some embodiments, a manual pressure regulating module is further included, the manual pressure regulating module is connected to the closed loop, and the manual pressure regulating module includes:

[0033] The medium container includes a medium inlet and a medium outlet, and the medium container is connected in series to the closed loop through the medium inlet and the medium outlet;

[0034] an adjusting member connected to the medium container, the adjusting member being used to adjust the volume of the medium container; and

[0035] The pressure gauge is installed in the medium container and is used to detect the pressure value of the circulating medium in the medium container.

[0036] In some embodiments, the medium container comprises:

[0037] a first plate;

[0038] a second plate body, the second plate body having a stroke approaching and moving away from the first plate body; and

[0039] The second connecting member connects the first plate body and the second plate body, and the second connecting member has multiple folding sections. The adjusting member drives the second plate body to approach the first plate body so that the folding sections are folded, thereby reducing the volume of the medium container; the adjusting member drives the second plate body away from the first plate body so that the folding sections are unfolded, thereby increasing the volume of the medium container.

[0040] In some embodiments, the loop module further comprises:

[0041] The pump body is electrically connected to the main control module, and the main control module controls the pump body to drive the circulating medium to flow in the closed loop;

[0042] Flexible connecting tube, the flexible connecting tube is respectively connected between the pump body, the regulating module and the stimulation module. The ends of the flexible connecting tube and the connections between the pump body, the regulating module and the stimulation module and the flexible connecting tube are provided with quick connectors so that the flexible connecting tube can be detachably installed between the pump body, the regulating module and the stimulation module.

[0043] The magnetic resonance testing system based on the embodiment of the present application includes a stimulation module, a regulation module, a circulation module, a circulating medium and a main control module. Among them, the stimulation module can provide multimodal stimulation to the test part, and realize the synchronous generation of pressure stimulation and temperature stimulation to the test part to meet actual experimental needs, so that researchers can observe the reactions under complex conditions caused by pressure and temperature stimulation under magnetic resonance imaging conditions.

[0044] Correspondingly, through the driving of the circulating medium by the circulation module, the circulating medium can directly transmit its pressure and temperature to the stimulation module, with low latency and high stability, and can quickly respond to the pressure and temperature stimulation set by researchers, effectively reducing experimental errors caused by stimulation delays.

[0045] In addition, the main control module is electrically connected to the stimulation module, the adjustment module and the circulation module respectively, and can control the adjustment module according to the actual pressure value and actual temperature value of the stimulation module, thereby performing negative feedback adjustment on the output pressure and output temperature of the stimulation module to achieve closed-loop control, thereby reducing the temperature fluctuations caused by changes in the circulating medium or the impact of temperature changes on the internal pressure, thereby improving the accuracy and stability of the stimulation module output. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 This is a schematic diagram of the process structure of a magnetic resonance testing system in one embodiment of the present application;

[0048] Figure 2 for Figure 1 Schematic diagram of the structure of the stimulation module of the medium magnetic resonance testing system;

[0049] Figure 3 for Figure 1 A schematic diagram of the structure of the fixed components of the stimulation module of the medium magnetic resonance testing system;

[0050] Figure 4A schematic diagram of a partial structure of a magnetic resonance testing system within a magnetic resonance scanning room according to an embodiment of the present application;

[0051] Figure 5 for Figure 1 Schematic diagram of the structure of the pressure regulating unit of the medium magnetic resonance test system;

[0052] Figure 6 for Figure 1 Schematic diagram of the structure of the manual voltage regulation module of the medium magnetic resonance test system.

[0053] Figure Number:

[0054] 100. Magnetic resonance testing system;

[0055] 1. Stimulation module; 11. Stimulation capsule; 12. Fixing assembly; 121. Strap body; 122. Grid structure; 123. First connector; 123a. First patch; 123b. Second patch; 13. Pressure sensor; 14. Temperature sensor;

[0056] 2. Regulation module; 21. Pressure regulation unit; 211. Piston assembly; 211a. Cylinder; 211b. Piston rod; 212. Drive motor; 213. One-way valve; 22. Temperature regulation unit;

[0057] 3. Circulation module; 31. Pump body; 32. Flexible connecting pipe; 33. Quick connector;

[0058] 4. Main control module;

[0059] 5. Manual pressure regulating module; 51. Medium container; 511. First plate; 512. Second plate; 513. Second connecting piece; 52. Adjusting piece; 53. Pressure gauge;

[0060] A. MRI control room; B. MRI scanning room. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0062] With the rise of high-temporal-resolution functional magnetic resonance imaging technology, researchers are increasingly demanding multimodal physiological stimulation experiments in magnetic resonance environments. Currently, tactile stimulation is one of the main research methods in magnetic resonance imaging experiments. Tactile sensation is specifically divided into touch pressure, pain, and temperature. Among them, pressure stimulation is widely used to explore the functions of the sensory and motor systems. By applying different pressure stimuli, researchers can deeply observe the responses of different brain regions to tactile input, thereby revealing the working mechanisms of the sensory cortex and related neural networks. In addition, temperature stimulation, as another sensory stimulus of touch, is also of great significance for studying temperature perception and temperature conduction pathways.

[0063] Therefore, there is an urgent need for a system that can provide precise pressure and temperature stimulation simultaneously in a strong magnetic field environment.

[0064] Please refer to Figure 1 and Figure 4 To solve the above technical problems, the present application proposes a magnetic resonance testing system 100. The embodiment of the present application provides a magnetic resonance testing system 100, which includes a stimulation module 1, a regulation module 2, a circulation module 3, a circulating medium, and a main control module 4. The stimulation module 1 is used to contact the test site to apply pressure stimulation and temperature stimulation to the test site and detect the actual pressure value and actual temperature value of the test site. The regulation module 2 is connected to the stimulation module 1 and is used to adjust the output pressure and output temperature of the stimulation module 1. The circulation module 3 is connected to the stimulation module 1 and the regulation module 2, and together with the stimulation module 1 and the regulation module 2, it forms a closed loop. The circulating medium is provided in the closed loop. The circulation module 3 can drive the circulating medium to circulate in the closed loop to transmit pressure and temperature. The main control module 4 is electrically connected to the stimulation module 1, the regulation module 2, and the circulation module 3 respectively. The main control module 4 regulates the output pressure and output temperature of the regulation module 2 according to the actual pressure value and actual temperature value fed back by the stimulation module 1, thereby regulating the output pressure and output temperature of the stimulation module 1.

[0065] It can be understood that the stimulation module 1 can provide multimodal stimulation to the test part, and realize the synchronous generation of pressure stimulation and temperature stimulation to the test part to meet the actual experimental needs, so that researchers can observe the reaction under complex conditions caused by pressure and temperature stimulation under magnetic resonance imaging conditions. Correspondingly, through the driving of the circulating medium by the circulation module 3, the circulating medium can directly transmit its pressure and temperature to the stimulation module 1, with low latency and high stability, and can quickly respond to the pressure and temperature stimulation set by the researchers, effectively reducing the experimental error caused by stimulation delay. In addition, the main control module 4 is electrically connected to the stimulation module 1, the adjustment module 2 and the circulation module 3 through the IIC serial line (Inter-Integrated Circuit, also known as I2 C or I2C, is a synchronous, multi-master, multi-slave serial communication bus), and can control the adjustment module 2 according to the actual pressure value and actual temperature value of the stimulation module 1, thereby performing negative feedback adjustment on the output pressure and output temperature of the stimulation module 1, realizing closed-loop control, and thereby reducing the temperature fluctuation caused by changes in the circulating medium or the impact of temperature changes on the internal pressure, thereby improving the accuracy and stability of the output of the stimulation module 1.

[0066] In the embodiments of the present application, stimulation module 1 is used to directly provide pressure stimulation and temperature stimulation to the test parts of the experimenter. It is understood that the test parts can be the hands, feet, back, face, and other human body areas, so as to facilitate adaptation to the research and treatment needs of different experiments, and this application is not limited thereto. In addition, stimulation module 1 can also detect the actual output pressure and actual temperature values, so that adjustment module 2 can adjust the output pressure and output temperature of stimulation module 1 after receiving feedback information.

[0067] Circulation module 3 connects stimulation module 1 and regulation module 2 to form a closed loop. Regulation module 2 can control the pressure and temperature of the circulating medium flowing within the closed loop, ensuring that the pressure and temperature of the circulating medium reach the preset pressure and temperature required by the researcher. This ensures that the circulating medium in stimulation module 1 has the preset pressure and temperature, further ensuring that the actual pressure and temperature of stimulation module 1 are equal to the preset pressure and temperature, respectively, to meet the researcher's needs. Furthermore, by transmitting pressure and temperature through the circulating medium, the flow of the circulating medium is unaffected by the strong magnetic environment. This allows for high immediacy while being compatible with experimental processes in a magnetic resonance environment, meeting the requirements of high-resolution functional magnetic resonance imaging experiments.

[0068] The circulating medium includes gaseous medium, liquid medium and solid medium. Different types of media can adapt to different experimental requirements as long as they can achieve pressure and temperature conduction. This application is not limited here.

[0069] In some embodiments, the main control module 4 in the present application includes a chip and a solid-state relay. The chip is used to receive signals of actual pressure values and actual temperature values. The chip is also used to receive electrical signals from the adjustment module 2 and send the adjustment signals to the adjustment module 2 to achieve adjustment of the output pressure and output temperature of the adjustment module 2. The solid-state relay is connected to the circulation module 3 and the adjustment module 2 to achieve the start and stop of the circulation module 3 and the adjustment module 2 under the control of the chip.

[0070] In the embodiments of the present application, the chips include FPGA chips (field programmable gate array chips), MCU chips (microcontroller chips), DSP chips (digital signal processors), etc. This application is not limited here, as long as it can meet the usage needs of researchers.

[0071] In one embodiment, the main control module 4 is responsible for overall control and feedback regulation, including an FPGA chip and a solid-state relay. The FPGA chip uses an AMD Xilinx 7020 FPGA chip to implement pressure generation, temperature regulation, and closed-loop feedback control logic. The solid-state relay uses a high-speed relay based on MOSFET, which can respond to control signals within 1ms to ensure low latency. The solid-state relay controls the start and stop of the circulation module 3 and the regulation module 2 to achieve rapid adjustment of the temperature of the circulating medium to meet the requirements of high time resolution experiments. In addition, the main control module 4 is also equipped with a BNC interface that can receive the sequence scan trigger electrical signal from the magnetic resonance scanner and control the pressure and temperature output according to the experimental design parameters, thereby adapting to the functional magnetic resonance imaging experimental environment based on block design.

[0072] Please refer to Figure 2 and Figure 3 The stimulation module 1 includes a stimulation capsule 11 and a fixing component 12, wherein the stimulation capsule 11 is used to contact the test site and form a closed loop with the stimulation module 1 and the adjustment module 2. The stimulation capsule 11 produces elastic deformation of expansion or contraction as the pressure of the circulating medium changes, and the temperature of the stimulation capsule 11 changes as the temperature of the circulating medium changes. The fixing component 12 is connected to the stimulation capsule 11 to fix the stimulation capsule 11 to the test site.

[0073] The stimulation capsule 11 serves as a functional interface that directly contacts the test site and can simultaneously transmit pressure and temperature stimulation through the physical properties of the circulating medium. Specifically, the stimulation capsule 11 includes an elastic cavity, which is connected to a closed loop and can carry the circulating medium. The deformation of the elastic cavity of the stimulation capsule 11 is driven by the pressure change of the circulating medium, thereby replacing the traditional mechanical structure and improving the response speed of pressure stimulation. In addition, the stimulation capsule 11 can quickly reach the set temperature through the continuous circulation of the circulating medium and ensure that the temperature output by the stimulation capsule 11 is uniform.

[0074] In the embodiment of the present application, the stimulation capsule 11 is made of non-metallic materials, such as silicone elastomers, rubber elastomers, etc. As long as it is elastic and is a non-metallic material, the present application is not limited here. The stimulation capsule 11 uses non-metallic materials to effectively isolate electromagnetic interference sources, ensuring that no radio frequency noise or image artifacts are introduced during subsequent imaging.

[0075] The fixing component 12 can be detachably installed on the test part, so as to facilitate fixing the stimulation capsule 11 at the specific position of the test part of the experimenter. When the volume of the stimulation capsule 11 changes dynamically with the pressure of the circulating medium, it can still be in stable contact with the test part, thereby ensuring the position stability of the stimulation capsule 11 during the experiment, thereby further improving the stability of the experimental results.

[0076] In addition, by configuring different models of fixing components 12, it can be suitable for different test parts of the experimenter and can be applied to a wider range of experimental scenarios.

[0077] It is understood that in other embodiments, the stimulation module 1 uses mechanical transmission or flexible transmission to achieve pressure transmission, such as using an elastic deformable body or a hydraulic diaphragm to achieve the function of transmitting pressure stimulation and temperature stimulation. This application is not limited to this.

[0078] In other embodiments, the stimulation module 1 further includes a pressure sensor 13 and a temperature sensor 14. The pressure sensor 13 is electrically connected to the main control module 4 for detecting the actual pressure value of the test part, and the temperature sensor 14 is electrically connected to the main control module 4 for detecting the actual temperature value of the test part.

[0079] In this example, the actual pressure value and actual temperature value of the test part are directly detected by the pressure sensor 13 and the temperature sensor 14. It can be understood that when the circulating medium flows in a closed loop, it may produce interference such as pressure attenuation and heat loss, causing the output parameters of the stimulation module 1 at the end to drift, and it cannot accurately output the set pressure and set temperature. Since the main control system can receive electrical signals of the actual pressure value and the actual temperature value, a control closed loop with end feedback is formed to ensure that the main control module 4 can compensate in real time for the stimulation deviation caused by pressure changes or thermodynamic losses caused by environmental fluctuations, thereby ensuring the stability and accuracy of the output pressure value and output temperature value.

[0080] Furthermore, the pressure sensor 13 includes a piezoresistive sensor, which is used to detect the actual pressure value output by the stimulation module 1. The piezoresistive sensor is electrically connected to the main control module 4, and the piezoresistive sensor converts the actual pressure value into an electrical signal and transmits it to the main control module 4. The temperature sensor 14 includes an optical fiber temperature sensor 14, which is used to detect the actual temperature value output by the stimulation module 1. The optical fiber temperature sensor 14 is electrically connected to the main control module 4, and the optical fiber temperature sensor 14 converts the actual temperature value stimulus into an electrical signal and transmits it to the main control module 4. It can be understood that the piezoresistive sensor can sense pressure changes through changes in the resistance of the material, has high sensitivity and resolution, is easy to capture tiny pressure changes, has a fast response speed, can reflect pressure changes in real time, and has strong stability. The optical fiber temperature sensor 14 mainly uses changes in optical signals to measure temperature, has extremely high measurement accuracy, and the optical fiber material is non-conductive and not affected by electromagnetic interference. It is compatible with strong magnetic environments (such as those in magnetic resonance imaging equipment), ensuring the accuracy and reliability of the measured actual temperature value.

[0081] In other embodiments, the pressure sensor 13 and the temperature sensor 14 can also be arranged at other positions in the closed loop. For example, the pressure sensor 13 and the temperature sensor 14 can be placed upstream or downstream of the regulation module 2 to achieve feedforward or feedback closed-loop control of physical quantities such as pressure and temperature.

[0082] In other embodiments, please refer to Figure 3 and Figure 4 The fixing assembly 12 includes a strap body 121, a grid structure 122, and a first connector 123. The strap body 121 is used to be detachably mounted on the test site. The grid structure 122 is provided in the strap body 121. The stimulation capsule 11 is installed in the grid structure 122. The first connector 123 includes a detachable first patch 123a and a second patch 123b. The first patch 123a and the second patch 123b are respectively located at the two ends of the strap body 121. The first patch 123a and the second patch 123b cooperate to enable the strap body 121 to be tightly wrapped around the test site. The first patch 123a and the second patch 123b separate to allow the strap body 121 to be loosened from the test site.

[0083] It should be noted that the strap body 121 is used to wrap around the test part of the experimenter, and the strap body 121 has different specifications according to different test parts. For example, when the test part is the hand or foot of the human body, a shorter strap body 121 can be used, and when the test part is the back area, a longer strap body 121 can be used. This application is not limited here.

[0084] The grid structure 122 is provided on the strap body 121, and the grid structure 122 is used to accommodate the stimulation capsule 11 to fix the position of the stimulation capsule 11 and ensure that the stimulation capsule 11 can accurately apply pressure and temperature stimulation to the test part. In some embodiments, there are multiple grid structures 122, and multiple grid structures 122 are spaced apart on the strap body 121. On the one hand, the stimulation capsule 11 can be installed in the grid structures 122 at different positions to achieve pressure and temperature stimulation at specific positions of the test part. On the other hand, in other embodiments, the number of stimulation capsules 11 and grid structures 122 are both multiple, so that pressure and temperature stimulation can be applied to the test part from different positions at the same time, thereby ensuring the diversity of experimental scenarios and satisfying the researchers' research effect on the effects of simultaneous pressure and temperature stimulation on different parts.

[0085] The first patch 123a and the second patch 123b of the first connector 123 cooperate to secure the strap body 121 to the test site. The first patch 123a and the second patch 123b of the first connector 123 cooperate to separate the strap body 121 from the test site. In some embodiments, one of the first patch 123a and the second patch 123b comprises a soft fiber, while the other comprises a barbed elastic fiber, thereby facilitating quick engagement and disengagement of the first patch 123a and the second patch 123b.

[0086] It is understandable that each component of the fixing assembly 12 is made of non-metallic materials, so it can ensure mechanical strength while being compatible with the magnetic resonance environment.

[0087] Please refer to Figure 1 The regulating module 2 includes a pressure regulating unit 21 and a temperature regulating unit 22. The pressure regulating unit 21 is electrically connected to the main control module 4 and is used to regulate the output pressure of the stimulation module 1. The temperature regulating unit 22 is electrically connected to the main control module 4 and is connected in series with the pressure regulating unit 21 to regulate the output temperature of the stimulation module 1. The pressure regulating unit 21, the temperature regulating unit 22, the circulation module 3 and the stimulation module 1 constitute a closed loop. In the above embodiment, the pressure regulating unit 21 and the temperature regulating unit 22 are arranged in series in sequence, so that the circulating medium can pass through the heat exchange process and the pressure modulation process in sequence, thereby realizing synchronous regulation of the temperature and pressure of the circulating medium. In addition, the pressure regulating unit 21 and the temperature regulating unit 22 can accurately control the pressure stimulation and temperature output by the stimulation module 1.

[0088] In addition, the pressure regulating unit 21 and the temperature regulating unit 22 can independently regulate the pressure and temperature of the circulating medium, and since the main control module 4 can monitor the actual pressure value and actual temperature value output by the stimulation module 1, the actual pressure value and actual temperature value output are compared with the preset pressure value and preset temperature value required by the researchers, so that the pressure regulating unit 21 and the temperature regulating unit 22 are negatively feedback adjusted according to the difference between the preset pressure value and the actual pressure value, and the difference between the preset temperature value and the actual temperature value. The pressure regulating unit 21 and the temperature regulating unit 22 are regulated to ensure that the pressure stimulation and temperature stimulation output by the stimulation module 1 can be feedback-regulated in real time, and the actual pressure value and the actual temperature value can maintain a small difference with the preset pressure value and the preset temperature value, thereby improving the output accuracy of the stimulation module 1 while also improving the output stability.

[0089] Please refer to Figure 5 The circulating medium is a liquid medium. The pressure regulating unit 21 includes a piston assembly 211 and a driving motor 212. The piston assembly 211 includes a cylinder 211a and a piston rod 211b. The cylinder 211a is connected to the circulation module 3 and accommodates the liquid medium. The piston rod 211b is movably arranged in the cylinder 211a to adjust the pressure of the liquid medium in the cylinder 211a. The driving motor 212 is connected to the piston rod 211b to drive the piston rod 211b to move. The driving motor 212 is electrically connected to the main control module 4. The main control module 4 controls the operation of the driving motor 212 to drive the movement of the piston rod 211b.

[0090] In some embodiments, the circulating medium is a liquid medium that can circulate in a closed loop and circulate within the cylinder 211a of the piston assembly 211. The repeated movement of the piston rod 211b within the cylinder 211a changes the volume of the cylinder 211a, thereby increasing or decreasing the internal volume of the cylinder 211a to change the pressure borne by the liquid medium. In this application, pressure stimulation is achieved by driving the stimulation module 1 through pressure changes in the liquid medium, which effectively complies with the magnetic resonance environment and reduces the impact on imaging quality.

[0091] It is understood that the cylinder 211a has a fluid inlet and a fluid outlet, and the liquid medium can flow into the cylinder 211a through the fluid inlet and flow out of the cylinder 211a through the fluid outlet. In some embodiments of the present application, the fluid inlet of the cylinder 211a is connected to a one-way valve 213. The one-way valve 213 only allows the inflow of the liquid medium and prevents the outflow of the liquid medium, thereby achieving one-way circulation of the liquid medium.

[0092] Specifically, the piston rod 211b has a first end and a second end arranged opposite to each other along its extension direction, wherein the first end of the piston rod 211b is connected to the drive motor 212, and the second end of the piston rod 211b has a moving stroke along the driving direction of the drive motor 212, and the second end of the piston rod 211b is used to fit the inner wall surface of the cylinder body 211a. Therefore, when the liquid medium flows through the fluid inlet into the space defined by the cylinder body 211a and the second end of the piston rod 211b, it can be driven by the second end of the piston rod 211b to change the pressure carried by the liquid medium. Specifically, the piston rod 211b moves in a direction close to the drive motor 212 to increase the volume of the cylinder body 211a, thereby reducing the pressure carried by the liquid medium. The piston rod 211b moves in a direction away from the drive motor 212 to reduce the volume of the cylinder body 211a, thereby increasing the pressure carried by the liquid medium.

[0093] In some embodiments, the drive motor 212 includes a linear motor that can directly convert electrical energy into linear motion output without the need for intermediate transmission components, thereby eliminating the gap error and elastic deformation of the intermediate transmission components. While reducing transmission errors, it achieves high-precision control of the position of the piston rod 211b, further achieving high-precision control of the bearing pressure of the liquid medium. In addition, the linear motor has high acceleration and speed, and can complete the drive of the piston rod 211b in a short time, so as to quickly respond to the main control module 4's demand for pressure changes. In specific experimental processes, it is necessary to frequently adjust or change the pressure. In this case, the linear motor can ensure rapid switching between different pressure settings, thereby meeting complex experimental requirements and is suitable for situations where multiple adjustments to experimental pressure parameters are required.

[0094] It can be understood that the main control module 4 is electrically connected to the linear motor. The main control module 4 controls the operation of the linear motor to adjust the pressure of the liquid medium, and further controls the output pressure of the stimulation module 1. In addition, the main control module 4 can obtain the motion state of the linear motor and the actual pressure value received by the pressure sensor 13 while controlling the operation of the linear motor, thereby achieving a closed-loop control effect on the linear motor.

[0095] In the above embodiment, the pressure regulating unit 21 also includes an electromagnetic shielding shell, which is used to cover other internal structures of the pressure regulating unit 21 inside the electromagnetic shielding shell. When the driving motor 212 is a linear motor, the electromagnetic shielding shell can effectively shield the influence of the external magnetic field on the linear motor, thereby ensuring the normal operation of the linear motor.

[0096] Please refer to Figure 1The temperature adjustment unit 22 includes a heating component, a cooling component and a heat exchange pipeline, wherein the heating component and the cooling component are electrically connected to the main control module 4, the heat exchange pipeline includes a charging flow path and a discharging flow path thermally connected to the charging flow path, the heating component and the cooling component are both arranged in the charging flow path, the heating component and the cooling component are respectively used for heating or cooling the charging flow path, the discharging flow path is connected in series to the closed loop, and the discharging flow path is used to perform heat exchange with the charging flow path.

[0097] In an embodiment of the present application, the heating component is used to heat the circulating medium, and the refrigeration component is used to cool the circulating medium, so that the temperature adjustment range of the circulating medium is between 2°C and 47°C, that is, to ensure that the stimulation module 1 can output both high temperatures higher than the subject's body temperature and low temperatures lower than the subject's body temperature, and can meet a variety of stimuli including temperature sensation, cold sensation and touch sensation, ensuring the presentation of combined coded temperature and pressure tactile stimulation, further expanding the possibility of studying complex physiological reactions during the experiment.

[0098] In some embodiments, the temperature of the circulating medium includes 2°C, 5°C, 10°C, 15°C, 20°C, 25°C, 30°C, 35°C, 40°C, 45°C, 47°C, etc. The charging flow path is heated or cooled by a heating component or a cooling component, so that the circulating medium in the discharging flow path connected in series in the closed loop can exchange heat with the charging flow path, thereby forming circulating media at different temperature states. By encoding and combining the temperature and pressure of the circulating medium, multimodal physiological stimulation is provided, thereby flexibly supporting the needs of various magnetic resonance imaging experiments, thereby improving the complexity of researchers' specific experimental conditions and the reliability of experimental data.

[0099] It can be understood that the main control module 4 controls the operation of the heating component and the refrigeration component based on the data feedback from the temperature sensor 14, and the main control module 4 dynamically adjusts the output power of the heating component and the refrigeration component through the PID closed-loop control algorithm to form a negative feedback regulation, which can not only improve the accuracy of temperature control, but also ensure that the temperature adjustment unit 22 can quickly respond to temperature change requirements, ensure that the temperature of the circulating medium can always be maintained within the preset temperature range, and improve the stability and reliability of the temperature adjustment unit 22.

[0100] In some other embodiments, the heating assembly includes an electric heating unit, which heats by resistive heating, has a high energy efficiency ratio, and can quickly and effectively increase the temperature of the circulating medium.

[0101] Correspondingly, the refrigeration component includes a TEC (Thermoelectric Cooler) semiconductor refrigeration unit, wherein the TEC semiconductor refrigeration unit uses the Peltier effect for cooling, can be controlled by the main control module 4 to accurately adjust the temperature of the circulating medium, and has a high energy efficiency ratio, and can quickly and effectively reduce the temperature of the circulating medium.

[0102] In some embodiments of the present application, the pressure sensor 13 is affected by the temperature of the circulating medium, thereby generating a drift value affected by temperature. The main control module 4 compensates for the drift value of the pressure sensor 13 affected by temperature based on the feedback signal of the pressure sensor 13 and the feedback signal of the temperature sensor 14, and calculates the compensated pressure value, and then dynamically controls the pressure regulating unit 21 to adjust the output pressure value. More specifically, by controlling the drive motor 212 and the piston rod 211b connected thereto, the displacement and movement speed of the piston rod 211b are changed, thereby ensuring that the pressure stimulation output by the stimulation module 1 can be within the set range, and ensuring the high precision and consistency of the output pressure and temperature of the regulation module 2.

[0103] Please refer to Figure 6 The magnetic resonance testing system 100 of the present application further includes a manual pressure regulating module 5, which is connected to a closed circuit and includes a medium container 51, an adjusting member 52, and a pressure gauge 53. The medium container 51 includes a medium inlet and a medium outlet, which are connected in series to the closed circuit via the medium inlet and the medium outlet. The adjusting member 52 is connected to the medium container 51 and is used to adjust the volume of the medium container 51. The pressure gauge 53 is installed in the medium container 51 and is used to detect the pressure value of the circulating medium in the medium container 51.

[0104] The manual pressure regulating module 5 is connected in series with the closed loop and forms a mechanical pressure regulating path independent of the pressure regulating unit 21. In the embodiment of the present application, the volume of the medium container 51 is adjusted by the adjusting member 52, so that the medium container 51 can absorb or release part of the circulating medium to achieve the regulation of the circulating medium pressure. This mechanical adjustment does not rely on electrical signals or software control. When the main control module 4 fails or needs to be operated offline, the manual pressure regulating module 5 can ensure that the pressure value in the closed loop can be maintained within the normal range, thereby improving the anti-interference ability and stability of the magnetic resonance testing system 100.

[0105] In addition, the pressure gauge 53 is used to monitor the pressure changes in the medium container 51 in real time and provide accurate pressure values, which makes it easier for researchers to adjust the regulating member 52 according to the current pressure value to ensure that the pressure value of the circulating medium can reach the set value of the system.

[0106] For further information, please refer to Figure 6 The medium container 51 includes a first plate 511, a second plate 512, and a second connecting member 513. The second plate 512 has a travel distance between approaching and moving away from the first plate 511. The second connecting member 513 connects the first plate 511 and the second plate 512. The second connecting member 513 has multiple folding sections. The adjusting member 52 drives the second plate 512 toward the first plate 511 to fold the folding sections, thereby reducing the volume of the medium container 51. The adjusting member 52 drives the second plate 512 away from the first plate 511 to unfold the folding sections, thereby increasing the volume of the medium container 51.

[0107] In the embodiment of the present application, the movement of the second plate 512 is driven by the adjustment member 52 to adjust the volume of the medium container 51, and the folding section of the second connecting member 513 can be switched between the folded and unfolded states, which also makes the volume adjustment process more flexible and controllable, and can effectively meet the experimental needs of researchers.

[0108] In some embodiments, the second connecting member 513 is made of a flexible material. On the one hand, the second connecting member 513 made of the flexible material has less resistance when switching between the folded and unfolded states, and can be adjusted more easily when the adjustment member 52 drives the second plate 512 to move. On the other hand, the connecting member 123 made of the flexible material has a certain buffering performance. When the pressure carried by the circulating medium is too large, the connecting member 123 can absorb the impact energy of the circulating medium, thereby ensuring the normal operation of each component in the entire closed loop.

[0109] In addition, before or after the researchers start the experiment, they can release the pressure in the closed loop through the manual pressure regulating module 5 to ensure that each component in the closed loop can operate in a safe state and ensure the safety of the experimental process. In addition, when the stimulation module 1 is pressure calibrated, it can also be achieved by adjusting the manual pressure regulating module 5.

[0110] In some embodiments, the pressure gauge 53 is disposed inside the medium container 51 and connected to the first plate 511 so that the pressure gauge 53 can better measure the pressure of the circulating medium in the closed loop, making it easier for experimenters to adjust the adjustment member 52 according to the pressure measured by the pressure gauge 53.

[0111] Please continue to refer to Figure 6The adjusting member 52 includes an adjusting screw, which is inserted into the second plate 512 and abuts the first plate 511. The adjusting screw is rotated to adjust the second plate 512 closer to the first plate 511 to reduce the volume of the medium container 51, and the adjusting screw is rotated to adjust the second plate 512 away from the first plate 511 to increase the volume of the medium container 51. The adjusting screw is threadedly connected to the second plate 512, so that when the adjusting screw is rotated, the second plate 512 can be driven closer to or away from the first plate 511, further changing the volume of the medium container 51. The adjustment process is more precise, and the adjustment of the volume of the medium container 51 is smoother and more controllable, which can adapt to various experimental needs and achieve personalized adjustment.

[0112] Researchers can instantly adjust the manual pressure regulating module 5 when necessary to reduce excessive pressure stimulation caused by failure of the main control module 4 or other reasons, thereby protecting the safety of the subjects. In addition, if the main control module 4 fails, the manual pressure regulating module 5 can serve as an emergency measure to reduce potential risks.

[0113] In some of these embodiments, please refer to Figure 1 The circulation module 3 also includes a pump body 31 and a flexible connecting tube 32. The pump body 31 is electrically connected to the main control module 4, which controls the pump body 31 to drive the circulating medium to flow in the closed loop. The flexible connecting tube 32 is respectively connected between the pump body 31, the regulating module 2 and the stimulation module 1. Quick connectors 33 are provided at the ends of the flexible connecting tube 32 and at the connections between the pump body 31, the regulating module 2 and the stimulation module 1 and the flexible connecting tube 32, so that the flexible connecting tube 32 can be detachably installed between the pump body 31, the regulating module 2 and the stimulation module 1.

[0114] The main control module 4 precisely controls the operating state of the pump 31 according to experimental requirements, ensuring stable flow of the circulating medium within the system. The pump 31 provides sufficient power for the circulating medium, enabling efficient circulation within a closed loop, meeting the requirements of high-resolution experiments. Furthermore, the pump 31's powering of the circulating medium ensures timely and accurate temperature and pressure regulation, improving the accuracy and immediacy of the pressure and temperature output by the stimulation module 1.

[0115] The main control module 4 monitors the pressure and temperature of the circulating medium in real time through sensors, and adjusts the working state of the pump body 31 according to the feedback data, ensuring that the flow of the circulating medium in the closed loop remains within a preset range, realizing closed-loop feedback of the pump body 31, reducing the impact of human operating errors and performance fluctuations of the pump body 31, and improving the reliability and stability of the magnetic resonance testing system 100.

[0116] In some embodiments, combined with the flow rate regulation by the pump body 31 and the temperature regulation by the temperature regulation unit 22, the main control module 4 can achieve precise temperature control by controlling the pump body 31 and the temperature regulation unit 22 to meet the experimental requirements of temperature stimulation.

[0117] In the embodiment of the present application, the design of the quick connector 33 allows the flexible connecting tube 32 to be easily installed and disassembled, greatly simplifying the assembly and maintenance process of the closed flow path. Experimenters can complete the installation, disassembly and replacement of related components in a short time, thereby improving experimental efficiency. In addition, the flexible connecting tube 32 can be bent, squeezed, and stretched to adapt to changes in different positions and angles, reducing the risk of failure due to mechanical stress. It can be understood that the connection between the quick connector 33 and the flexible connecting tube 32 not only improves the flexibility of the system, but also is compatible with the magnetic resonance environment and better transmits the pressure and temperature of the circulating medium.

[0118] In some embodiments, the inner diameter of the flexible connecting tube 32 is 1 / 4 inch (i.e., 6.35 mm), and the corresponding quick connector 33 is also 1 / 4 inch. The flexible connecting tube 32 in the present application is made of polyurethane (PU) material, which has strong tensile strength and bending resistance. It can ensure that the pressure of the circulating medium in the flexible connecting tube 32 does not change significantly during the transmission process, thereby ensuring that the pressure ultimately delivered to the stimulation module 1 is consistent with the set pressure. In addition, the inner surface of the flexible connecting tube 32 is relatively smooth, which reduces friction and viscosity effects during the flow of the circulating medium, further reducing experimental errors.

[0119] Specifically, the circulating medium in the flexible connection flows through the circulation module 3, the temperature adjustment unit 22, the pressure adjustment unit 21, and the stimulation module 1 in sequence, and the loop drawn out from the stimulation module 1 flows back to the manual pressure adjustment module 5, and finally flows back to the circulation module 3 to complete the circulation process of the circulating medium.

[0120] Please refer to Figure 1 In the embodiment of the present application, in order to solve the interference of the strong magnetic environment on magnetic resonance imaging, in the present application, the main control module 4, the adjustment module 2 and part of the circulation module 3 (i.e., the pump body 31) are all located in the magnetic resonance control room A to isolate the influence of the strong magnetic environment, and the stimulation module 1 is located in the magnetic resonance scanning room B, in direct contact with the test part of the subject. The components located in the magnetic resonance scanning room B are all made of non-magnetic substances and non-metallic materials, avoiding the potential safety risks and image quality impact caused by the strong magnetic environment.

[0121] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0122] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0123] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0124] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0125] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0126] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A magnetic resonance testing system (100), characterized in that include: A stimulation module (1) is used for contacting a test part to apply pressure stimulation and temperature stimulation to the test part, and detecting an actual pressure value and an actual temperature value of the test part; a regulating module (2), connected to the stimulation module (1), and configured to regulate the output pressure and output temperature of the stimulation module (1); a circulation module (3) connected to the stimulation module (1) and the regulation module (2), and forming a closed loop with the stimulation module (1) and the regulation module (2); A circulating medium is provided in the closed loop, and the circulation module (3) is capable of driving the circulating medium to circulate in the closed loop for transmitting pressure and temperature; and A main control module (4) is electrically connected to the stimulation module (1), the regulation module (2) and the circulation module (3) respectively. The main control module (4) regulates the output pressure and output temperature of the regulation module (2) according to the actual pressure value and the actual temperature value fed back by the stimulation module (1), so as to regulate the output pressure and output temperature of the stimulation module (1).

2. The magnetic resonance testing system (100) according to claim 1, characterized in that The stimulation module (1) comprises: A stimulation capsule (11), the stimulation capsule (11) being used to contact the test site and forming the closed loop with the stimulation module (1) and the adjustment module (2); the stimulation capsule (11) undergoes elastic deformation such as expansion or contraction as the pressure of the circulating medium changes, and the temperature of the stimulation capsule (11) changes as the temperature of the circulating medium changes; A fixing component (12) is connected to the stimulation capsule (11) to fix the stimulation capsule (11) to the test site.

3. The magnetic resonance testing system (100) according to claim 2, characterized in that The stimulation module (1) further comprises: a pressure sensor (13), electrically connected to the main control module (4), for detecting an actual pressure value applied to the test part; and A temperature sensor (14) is electrically connected to the main control module (4) and is used to detect the actual temperature value of the test part.

4. The magnetic resonance testing system (100) according to claim 2, characterized in that The fixing assembly (12) comprises: A binding strap body (121) is used for being detachably mounted on the test part; a grid structure (122) provided on the strap body (121), wherein the stimulation capsule (11) is installed in the grid structure (122); and The first connecting member (123) includes a first patch (123a) and a second patch (123b) that are detachably arranged. The first patch (123a) and the second patch (123b) are respectively located at two ends of the strap body (121). The first patch (123a) and the second patch (123b) cooperate to enable the strap body (121) to be tightly wrapped around the test part. The first patch (123a) and the second patch (123b) are separated to enable the strap body (121) to loosen the test part.

5. The magnetic resonance testing system (100) according to claim 1, characterized in that The regulating module (2) comprises: a pressure regulating unit (21), electrically connected to the main control module (4), for regulating the output pressure of the stimulation module (1); and a temperature regulating unit (22), electrically connected to the main control module (4) and connected in series with the pressure regulating unit (21), for regulating the output temperature of the stimulation module (1); The pressure regulating unit (21), the temperature regulating unit (22), the circulation module (3) and the stimulation module (1) constitute the closed loop.

6. The magnetic resonance testing system (100) according to claim 5, characterized in that The circulating medium is a liquid medium, and the pressure regulating unit (21) comprises: A piston assembly (211) includes a cylinder (211a) and a piston rod (211b), wherein the cylinder (211a) is in communication with the circulation module (3) and contains the liquid medium, and the piston rod (211b) is movably disposed in the cylinder (211a) to adjust the pressure of the liquid medium in the cylinder (211a); and The driving motor (212) is connected to the piston rod (211b) to drive the piston rod (211b) to move. The driving motor (212) is electrically connected to the main control module (4). The main control module (4) controls the operation of the driving motor (212) to drive the piston rod (211b) to move.

7. The magnetic resonance testing system (100) according to claim 5, characterized in that The temperature regulating unit (22) comprises: A heating component electrically connected to the main control module (4); a refrigeration component electrically connected to the main control module (4); and The heat exchange pipeline includes a charging flow path and a discharging flow path thermally connected to the charging flow path. The heating component and the cooling component are both arranged in the charging flow path. The heating component and the cooling component heat or cool the charging flow path respectively. The discharging flow path is connected in series to the closed loop and is used to perform heat exchange with the charging flow path.

8. The magnetic resonance testing system (100) according to claim 1, characterized in that It also includes a manual pressure regulating module (5), the manual pressure regulating module (5) is connected to the closed loop, and the manual pressure regulating module (5) includes: A medium container (51), the medium container (51) comprising a medium inlet and a medium outlet, the medium container (51) being connected in series to the closed circuit via the medium inlet and the medium outlet; an adjusting member (52) connected to the medium container (51), the adjusting member (52) being used to adjust the volume of the medium container (51); and A pressure gauge (53) is installed in the medium container (51), and the pressure gauge (53) is used to detect the pressure value of the circulating medium in the medium container (51).

9. The magnetic resonance testing system (100) according to claim 8, characterized in that The medium container (51) comprises: a first plate (511); a second plate (512), the second plate (512) having a stroke approaching and moving away from the first plate (511); and A second connecting member (513) is provided, wherein the second connecting member (513) connects the first plate body (511) and the second plate body (512); the second connecting member (513) has a plurality of folding sections; the adjusting member (52) drives the second plate body (512) to approach the first plate body (511) so as to fold the folding sections, thereby reducing the volume of the medium container (51); and the adjusting member (52) drives the second plate body (512) to move away from the first plate body (511) so as to unfold the folding sections, thereby increasing the volume of the medium container (51).

10. The magnetic resonance testing system (100) according to claim 1, characterized in that The circulation module (3) further comprises: A pump body (31), the pump body (31) being electrically connected to the main control module (4), and the main control module (4) controlling the pump body (31) to drive the circulating medium to flow in the closed loop; A flexible connecting tube (32) is connected between the pump body (31), the regulating module (2) and the stimulation module (1), respectively. Quick connectors (33) are provided at the ends of the flexible connecting tube (32) and at the connections between the pump body (31), the regulating module (2) and the stimulation module (1) and the flexible connecting tube (32), so that the flexible connecting tube (32) can be detachably installed between the pump body (31), the regulating module (2) and the stimulation module (1).

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