High-pressure injector trolley with magnetic resonance state detection function and control method

Abstract

The invention discloses a high-pressure injector trolley with a magnetic resonance state detection function and a control method. The high-pressure injector trolley comprises a movable trolley body, a high-pressure injector, a power conversion device, a detection device and a controller, wherein the high-pressure injector, the power conversion device, the detection device and the controller are mounted on the trolley body; the power supply conversion device is used for converting an input power supply into a proper voltage for power supply; the detection device is used for collecting one or more data of a magnetic resonance indoor gradient field, a magnetic resonance indoor radio frequency signal, a magnetic resonance equipment peripheral magnetic field and magnetic resonance indoor sound; the controller is electrically connected with the detection device and the high-pressure injector respectively; the controller is used for receiving detection data of the detection device and judging whether the magnetic resonance equipment is in a scanning state or not according to the detection data. According to the invention, when and only when the magnetic resonance equipment is not in the scanning state, the high-pressure injector is allowed to charge and discharge the battery, so that artifact interference generated by charging and discharging of the battery of the high-pressure injector to the magnetic resonance equipment is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-pressure injectors, and in particular relates to a high-pressure injector trolley with a magnetic resonance state detection function and a control method thereof. Background Art

[0002] In many medical diagnosis and interventional procedures, medical staff inject saline or contrast agents into patients, and assist doctors in diagnosis and treatment with computed tomography (CT), digital subtraction angiography (DSA), and magnetic resonance imaging (MR). Since magnetic resonance imaging does not cause radiation damage to the human body during the imaging process, magnetic resonance imaging technology is increasingly being respected and used by hospitals. Magnetic resonance imaging technology can achieve the desired inspection effect of the image of the desired part while avoiding radiation to the patient. In order to obtain some early lesion images and clearer image development effects under magnetic resonance scanning, a high-pressure injector is required to inject contrast agents during magnetic resonance scanning to enhance the image scanning effect and achieve the best image development.

[0003] In order to prevent the use of high-pressure injectors from causing artifacts in magnetic resonance imaging, the current magnetic resonance high-pressure injector system uses optical fiber cables to connect the equipment between the magnetic resonance room and the control room when used in the magnetic resonance room. It can only be powered by AC power, and then converted to DC power through a power conversion box. The DC voltage signal is then input to the high-pressure injector trolley through shielding and filtering for use by the system. This connection method results in a relatively thick cable between the high-pressure injector and the power conversion box. Due to the limited space in the magnetic resonance room, this cable will be dragged, causing some troubles in the movement and use of the high-pressure injector.

[0004] At the same time, in some cases, the power conversion box of the high-pressure injector is fixed in a corner of the MRI room. In order to facilitate the enhanced imaging needs of different patients during daily use, the high-pressure injector of the MRI sometimes needs to be moved to the other side of the MRI bed or the rear end of the MRI for imaging. After the movement, the power input line of the system will be close to the MRI magnet. When the high-pressure injector is injecting, the system power is large, resulting in a large current in the power input at this time. The large current signal passing through the changing magnetic field will affect the uniformity of the magnetic field around the MRI. At the same time, the change of the large current signal will cause more high-frequency signals to appear in the cable, and the MRI is very sensitive to high-frequency signals during scanning, which will cause the system to have artifacts, which will ultimately affect the image of the MRI scan and have a certain impact on the final image judgment. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a high-pressure injector trolley with a magnetic resonance state detection function and a control method.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows:

[0007] On the one hand, the present invention discloses a high-pressure injector trolley with a magnetic resonance state detection function, comprising: a movable vehicle body and a high-pressure injector, a power conversion device, a detection device and a controller installed on the vehicle body;

[0008] The power conversion device is used to convert the input power into a suitable voltage to supply power to the high-pressure injector, the detection device and the controller respectively;

[0009] The detection device is used to collect one or more data of the gradient field in the magnetic resonance room, the radio frequency signal in the magnetic resonance room, the magnetic field around the magnetic resonance device, and the sound in the magnetic resonance room;

[0010] The controller is electrically connected to the detection device and the high-pressure injector respectively;

[0011] The controller is used to receive detection data from the detection device and determine whether the magnetic resonance device is in a scanning state according to the detection data;

[0012] If it is in the scanning state, the controller turns off the charging and discharging functions of the high-pressure injector;

[0013] If it is not in the scanning state, the controller turns on the charging and discharging function of the high-pressure injector.

[0014] Based on the above technical solution, the following improvements can be made:

[0015] As a preferred solution, the detection device includes:

[0016] A magnetic field sensor, which is used to collect magnetic field data around the magnetic resonance device;

[0017] A data conversion circuit, the data conversion circuit is used to convert the magnetic field data collected by the magnetic field sensor into voltage data;

[0018] A data amplifying circuit, the data amplifying circuit is used to amplify the voltage data converted by the data conversion circuit;

[0019] The filter circuit is used to filter the amplified data after the data amplification circuit.

[0020] As a preferred solution, the detection device includes:

[0021] Noise sensor, which is used to collect sound data in the magnetic resonance room;

[0022] A data conversion circuit, the data conversion circuit is used to convert the sound data collected by the noise sensor into voltage data;

[0023] The data amplification circuit is used to amplify the voltage data converted by the data conversion circuit.

[0024] As a preferred solution, the power conversion device includes: a plurality of conversion circuits, and the conversion circuits are used to convert the input power into a plurality of different voltages.

[0025] As a preferred solution, the power conversion device converts the input 220V AC power into a DC 24V voltage, a DC 5V voltage and a DC 3.3V voltage.

[0026] As a preferred solution, a wireless communication device is also installed on the vehicle body, the wireless communication device is electrically connected to the controller, and the wireless communication device is used to realize remote data interaction between the high-pressure injector trolley and the control console.

[0027] On the other hand, the present invention further discloses a control method for a high-pressure injector trolley with a magnetic resonance state detection function, which is used to control any of the above-mentioned high-pressure injector trolleys, comprising:

[0028] Step S1: The high-pressure injector trolley is turned on;

[0029] Step S2: The detection device collects one or more data of the gradient field in the magnetic resonance room, the radio frequency signal in the magnetic resonance room, the magnetic field around the magnetic resonance device, and the sound in the magnetic resonance room;

[0030] Step S3: the controller receives the detection data from the detection device, and determines whether the magnetic resonance device is in a scanning state according to the detection data;

[0031] If it is in the scanning state, the controller turns off the charging and discharging functions of the high-pressure injector;

[0032] If it is not in the scanning state, the controller turns on the charging and discharging function of the high-pressure injector.

[0033] As a preferred solution, when the magnetic resonance device is not in a scanning state in step S3, it is further determined whether the motor of the high-pressure injector is in a running state;

[0034] If it is in the running state, the controller turns off the charging and discharging functions of the high-pressure injector;

[0035] If it is not in operation, the controller finally turns on the charging and discharging function of the high-pressure injector.

[0036] The present invention discloses a high-pressure injector trolley with a magnetic resonance state detection function and a control method, which has the following beneficial effects:

[0037] First, the present invention integrates a high-pressure injector, a power conversion device, a detection device and a controller on a high-pressure injector trolley, which can be moved and used at any position in the magnetic resonance room, providing convenience for the use of the high-pressure injector.

[0038] Second, the high-pressure injector trolley of the present invention integrates a magnetic resonance state detection function, which indirectly determines whether the magnetic resonance device is in a scanning state by detecting changes in the gradient field in the magnetic resonance room, changes in the radio frequency signal, changes in the magnetic field around the magnetic resonance device, or changes in the sound in the magnetic resonance room. When and only when the magnetic resonance device is not in a scanning state, the high-pressure injector is allowed to charge and discharge, thereby avoiding artifact interference on the magnetic resonance device caused by charging and discharging of the high-pressure injector battery, thereby ensuring good scanning imaging effects.

[0039] Third, the present invention adds a wireless communication device, which can realize remote data interaction between the high-pressure injector trolley and the control console, realize wireless connection between the high-pressure injector trolley and the control console, and facilitate the movement of the trolley during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 A schematic diagram of a high-pressure injector trolley provided in an embodiment of the present invention.

[0042] Figure 2 One of the circuit diagrams involved in the detection device provided in the embodiment of the present invention.

[0043] Figure 3 The detection device provided in the embodiment of the present invention involves the second circuit diagram.

[0044] Figure 4 A flow chart of a control method provided by an embodiment of the present invention.

[0045] Among them: 1-vehicle body, 2-high-pressure injector, 3-power conversion device, 4-detection device, 5-controller, 6-wireless communication device. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The expression of “comprising” an element is an “open” expression, which merely means that a corresponding component or step exists, and should not be interpreted as excluding additional components or steps.

[0049] In order to achieve the purpose of the present invention, some embodiments of the high-pressure injector trolley and control method having a magnetic resonance state detection function are as follows: Figure 1 As shown, the high-pressure injector trolley comprises: a movable body 1 and a high-pressure injector 2, a power conversion device 3, a detection device 4 and a controller 5 installed on the body 1;

[0050] The power conversion device 3 is used to convert the input power into a suitable voltage to supply power to the high-pressure injector 2, the detection device 4 and the controller 5 respectively;

[0051] The detection device 4 is used to collect one or more data of the gradient field in the magnetic resonance room, the radio frequency signal in the magnetic resonance room, the magnetic field around the magnetic resonance device, and the sound in the magnetic resonance room;

[0052] The controller 5 is electrically connected to the detection device 4 and the high-pressure injector 2 respectively;

[0053] The controller 5 is used to receive the detection data of the detection device 4, and determine whether the magnetic resonance device is in a scanning state according to the detection data;

[0054] If it is in the scanning state, the controller turns off the charging and discharging functions of the high-pressure injector 2;

[0055] If it is not in the scanning state, the controller turns on the charging and discharging function of the high-pressure injector 2 .

[0056] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that the detection device 4 includes:

[0057] A magnetic field sensor, which is used to collect magnetic field data around the magnetic resonance device;

[0058] A data conversion circuit, the data conversion circuit is used to convert the magnetic field data collected by the magnetic field sensor into voltage data;

[0059] A data amplifying circuit, the data amplifying circuit is used to amplify the voltage data converted by the data conversion circuit;

[0060] The filter circuit is used to filter the amplified data after the data amplification circuit.

[0061] Some circuits involved in the above-mentioned detection device with magnetic field detection function are as follows Figure 2 shown.

[0062] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that the detection device 4 includes:

[0063] Noise sensor, which is used to collect sound data in the magnetic resonance room;

[0064] A data conversion circuit, the data conversion circuit is used to convert the sound data collected by the noise sensor into voltage data;

[0065] The data amplification circuit is used to amplify the voltage data converted by the data conversion circuit.

[0066] The inventor discovered that the whistling sound emitted by the magnetic resonance device when scanning and when not scanning is different. Therefore, the present invention indirectly determines the scanning state of the magnetic resonance device based on this noise, and further controls the battery charging state of the high-pressure injector based on the scanning state of the resonance device. The present invention can avoid the phenomenon of artifacts generated when the magnetic resonance device scans images due to the radio frequency signal or current change signal generated by the battery charging circuit.

[0067] Specifically, the distributed circuits involved in the detection device with noise detection function are as follows: Figure 3 shown.

[0068] In order to further optimize the implementation effect of the present invention, in some other implementations, the remaining characteristic technologies are the same, except that the power conversion device 3 includes: a plurality of conversion circuits, and the conversion circuits are used to convert the input power into a plurality of different voltages.

[0069] Furthermore, the power conversion device converts the input 220V AC power into a DC 24V voltage, a DC 5V voltage and a DC 3.3V voltage.

[0070] It is worth noting that the 220V AC power supply is first converted into a DC 24V voltage, then the DC 24V voltage is converted into a DC 5V voltage, and then the DC 5V voltage is converted into a DC 3.3V voltage.

[0071] The DC 24V voltage is used to power the high-pressure injector motor; the DC 5V voltage is used to power the above-mentioned detection device, sensor or indicator light circuit, etc., detection circuit, indicator light circuit; the DC 3.3V voltage is used to power the controller.

[0072] In order to further optimize the implementation effect of the present invention, in some other embodiments, the other characteristic technologies are the same, the difference is that a wireless communication device 6 is also installed on the vehicle body, the wireless communication device 6 is electrically connected to the controller 5, and the wireless communication device 6 is used to realize remote data interaction between the high-pressure injector trolley and the control console.

[0073] The embodiment of the present invention also discloses a control method of a high-pressure injector trolley with a magnetic resonance state detection function, which is used to control the high-pressure injector trolley disclosed in any of the above embodiments, such as Figure 4 As shown, including:

[0074] Step S1: The high-pressure injector trolley is turned on;

[0075] Step S2: The detection device collects one or more data of the gradient field in the magnetic resonance room, the radio frequency signal in the magnetic resonance room, the magnetic field around the magnetic resonance device, and the sound in the magnetic resonance room;

[0076] Step S3: the controller receives the detection data from the detection device, and determines whether the magnetic resonance device is in a scanning state according to the detection data;

[0077] If it is in the scanning state, the controller turns off the charging and discharging functions of the high-pressure injector;

[0078] If it is not in the scanning state, the controller turns on the charging and discharging function of the high-pressure injector.

[0079] Further, when the magnetic resonance device is not in the scanning state in step S3, it is further determined whether the motor of the high-pressure injector is in the running state;

[0080] If it is in the running state, the controller turns off the charging and discharging functions of the high-pressure injector;

[0081] If it is not in operation, the controller finally turns on the charging and discharging function of the high-pressure injector.

[0082] The present invention discloses a high-pressure injector trolley with a magnetic resonance state detection function and a control method, which has the following beneficial effects:

[0083] First, the present invention integrates the high-pressure injector 2, the power conversion device 3, the detection device 4 and the controller 5 on the high-pressure injector trolley, which can be moved and used at any position in the magnetic resonance room, providing convenience for the use of the high-pressure injector.

[0084] Second, the high-pressure injector trolley of the present invention integrates a magnetic resonance state detection function, which indirectly determines whether the magnetic resonance device is in a scanning state by detecting changes in the gradient field in the magnetic resonance room, changes in the radio frequency signal, changes in the magnetic field around the magnetic resonance device, or changes in the sound in the magnetic resonance room. When and only when the magnetic resonance device is not in a scanning state, the high-pressure injector is allowed to charge and discharge, thereby avoiding artifact interference on the magnetic resonance device caused by charging and discharging of the high-pressure injector battery, thereby ensuring good scanning imaging effects.

[0085] Thirdly, the present invention adds a wireless communication device, which can realize remote data interaction between the high-pressure injector trolley and the control console.

[0086] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like 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, and do not indicate or imply 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 a limitation on the present invention.

[0087] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0088] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-pressure injector trolley with a magnetic resonance state detection function, characterized in that: include: A movable vehicle body and a high-pressure injector, a power conversion device, a detection device and a controller mounted on the vehicle body; The power conversion device is used to convert the input power into a suitable voltage to supply power to the high-pressure injector, the detection device and the controller respectively; The detection device is used to collect one or more data of the gradient field in the magnetic resonance room, the radio frequency signal in the magnetic resonance room, the magnetic field around the magnetic resonance device, and the sound in the magnetic resonance room; The controller is electrically connected to the detection device and the high-pressure injector respectively; The controller is used to receive detection data from the detection device and determine whether the magnetic resonance device is in a scanning state according to the detection data; If it is in the scanning state, the controller turns off the charging and discharging functions of the high-pressure injector; If it is not in the scanning state, the controller turns on the charging and discharging function of the high-pressure injector.

2. The high-pressure injector trolley according to claim 1, characterized in that: The detection device comprises: A magnetic field sensor, wherein the magnetic field sensor is used to collect magnetic field data around the magnetic resonance device; A data conversion circuit, wherein the data conversion circuit is used to convert the magnetic field data collected by the magnetic field sensor into voltage data; A data amplifying circuit, wherein the data amplifying circuit is used to amplify the voltage data converted by the data conversion circuit; The filter circuit is used for filtering the amplified data after the data amplification circuit.

3. The high-pressure injector trolley according to claim 1, characterized in that: The detection device comprises: A noise sensor, wherein the noise sensor is used to collect sound data in the magnetic resonance room; A data conversion circuit, wherein the data conversion circuit is used to convert the sound data collected by the noise sensor into voltage data; The data amplifying circuit is used to amplify the voltage data converted by the data converting circuit.

4. The high-pressure injector trolley according to claim 1, characterized in that: The power conversion device includes: a plurality of conversion circuits, and the conversion circuits are used to convert input power into a plurality of different voltages.

5. The high-pressure injector trolley according to claim 4, characterized in that: The power conversion device converts the input 220V AC power into a DC 24V voltage, a DC 5V voltage and a DC 3.3V voltage.

6. The high-pressure injector trolley according to claim 1, characterized in that: A wireless communication device is also installed on the vehicle body. The wireless communication device is electrically connected to the controller and is used to realize remote data interaction between the high-pressure injector trolley and the control console.

7. A control method for a high-pressure injector trolley with a magnetic resonance state detection function, characterized in that: Used to control the high-pressure injector trolley according to any one of claims 1 to 6, comprising: Step S1: The high-pressure injector trolley is turned on; Step S2: The detection device collects one or more data of the gradient field in the magnetic resonance room, the radio frequency signal in the magnetic resonance room, the magnetic field around the magnetic resonance device, and the sound in the magnetic resonance room; Step S3: the controller receives the detection data from the detection device, and determines whether the magnetic resonance device is in a scanning state according to the detection data; If it is in the scanning state, the controller turns off the charging and discharging functions of the high-pressure injector; If it is not in the scanning state, the controller turns on the charging and discharging function of the high-pressure injector.

8. The control method according to claim 7, characterized in that: When the magnetic resonance device is not in the scanning state in step S3, further determining whether the motor of the high-pressure injector is in the running state; If it is in the running state, the controller turns off the charging and discharging functions of the high-pressure injector; If it is not in operation, the controller finally turns on the charging and discharging function of the high-pressure injector.

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