Respiratory training system for deep inspiration and breath-holding radiotherapy

Abstract

The invention discloses a respiratory training system for deep inspiration and breath-holding radiotherapy. The respiratory training system is small in equipment size, accurate, easy to use, easy to operate and convenient to carry. According to the technical scheme, the system comprises a respiration amplitude monitoring device and a man-machine interaction system, and the respiration amplitude monitoring device comprises a data acquisition unit, a data processing unit and a human-computer interaction unit, and is used for monitoring the respiration amplitude of a user and outputting an original displacement signal; the data receiving and processing unit is used for receiving the original displacement signal and converting the original displacement signal into a digital signal; the algorithm conversion unit is used for converting the digital signal into a digital signal matched with the amplitude during radiotherapy positioning; the data transmission unit is used for transmitting the digital signal converted by the algorithm conversion unit to the man-machine interaction system; the power supply unit is used for supplying power to each unit in the breathing amplitude monitoring device; and the man-machine interaction system is used for receiving the digital signal from the breathing amplitude monitoring device and displaying and processing the received digital signal in real time.

Description

Technical Field

[0001] The present invention relates to a medical training device, in particular to a respiratory training system for respiratory gating in deep inspiration breath-hold radiotherapy. Background Art

[0002] Deep inspiration breath hold (DIBH) is a therapeutic technique designed to reduce cardiac radiation during radiotherapy. During radiotherapy, deep inspiration breath hold can be used to control organ movement and keep normal tissue away from high-dose areas. In recent years, DIBH technology has gradually been used in patients with left-sided breast cancer. In patients with left-sided breast cancer, instructing patients to take a deep breath and hold their breath using chest breathing can effectively increase the distance between the heart and the irradiated target area and reduce the amount of radiation to the heart. In order to achieve accurate and effective DIBH treatment, it is particularly important to ensure the consistency and stability of the patient's chest wall position and the repeatability of each DIBH. During DIBH radiotherapy, monitoring and control of breathing is very important. Accurate control of the inhalation amplitude and inhalation time is an important guarantee for the smooth and accurate completion of radiotherapy.

[0003] However, optical surface monitoring and respiratory gating equipment are bulky and can only be used in positioning rooms and accelerator rooms, making them inconvenient for users to use anytime and anywhere. Existing respiratory training devices are large and heavy, with complex mechanical structures, making them difficult to carry. Therefore, there is an urgent need for a portable, accurate, easy-to-use, and miniaturized respiratory training device that can facilitate users to perform respiratory training in advance in non-medical settings such as at home, adapt to the respiratory environment during radiotherapy, save radiotherapy time, and improve radiotherapy accuracy and efficiency. Summary of the Invention

[0004] The following is a brief summary of one or more aspects to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceivable aspects and is neither intended to identify key or critical elements of all aspects nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that will be provided later.

[0005] The purpose of the present invention is to solve the above problems and provide a breathing training system for deep inspiration breath-hold radiotherapy, which can achieve miniaturization, accuracy, ease of use, simple operation and portability of the equipment, allowing users to perform independent breathing training in non-medical places.

[0006] The technical solution of the present invention is as follows: The present invention discloses a breathing training system for deep inspiration breath-hold radiotherapy, the system comprising a breathing amplitude monitoring device and a human-computer interaction system, wherein:

[0007] The respiratory amplitude monitoring device further comprises:

[0008] The data acquisition unit monitors the user's breathing amplitude by measuring the displacement of a fixed position on the user's chest and outputs an original displacement signal;

[0009] A data receiving and processing unit receives the original displacement signal from the data acquisition unit and converts the displacement signal into a digital signal;

[0010] an algorithm conversion unit, which converts the digital signal from the data receiving and processing unit into a digital signal that matches the amplitude during radiotherapy positioning;

[0011] A data transmission unit, which transmits the digital signal converted by the algorithm conversion unit to the human-computer interaction system; and

[0012] The power supply unit provides power to the data acquisition unit, data receiving and processing unit, algorithm conversion unit, and data transmission unit in the respiratory amplitude monitoring device;

[0013] The human-computer interaction system is used to receive digital signals from the respiratory amplitude monitoring device and to display and process the received digital signals in real time.

[0014] According to an embodiment of the breathing training system for deep inspiration breath-hold radiotherapy of the present invention, the breathing amplitude monitoring device is fixed on the user's body surface, and the fixing method includes sticking it on the user's body surface through a fixing patch.

[0015] According to an embodiment of the breathing training system for deep inspiration breath-hold radiotherapy of the present invention, the human-computer interaction system is installed and run on the mobile device.

[0016] According to one embodiment of the breathing training system for deep inspiration breath-hold radiotherapy of the present invention, the mobile device is fixed and supported by a bracket. The bracket has the function of adjusting the position, height and angle, so that the user can use the mobile device in different postures, wherein the bracket can be provided by the user.

[0017] According to an embodiment of the breathing training system for deep inspiration breath-hold radiotherapy of the present invention, a power switch is provided on the power supply unit.

[0018] According to an embodiment of the breathing training system for deep inspiration breath-hold radiotherapy of the present invention, the data acquisition unit is a small accelerometer module.

[0019] According to an embodiment of the breathing training system for deep inspiration breath-hold radiotherapy of the present invention, the data receiving and processing unit is further configured to filter, amplify and digitize the original displacement signal.

[0020] According to an embodiment of the breathing training system for deep inspiration breath-hold radiotherapy of the present invention, the data transmission unit is a wireless transmission method, and the wireless transmission method further includes Bluetooth transmission.

[0021] According to one embodiment of the breathing training system for deep inspiration breath-hold radiotherapy of the present invention, the algorithm conversion unit converts the digitized signal from the data receiving and processing unit into a digital signal that matches the amplitude during radiotherapy positioning by linear scalar multiplication.

[0022] Compared with the existing technology, the present invention has the following beneficial effects: the system of the present invention uses a small respiratory monitoring device to monitor the degree of respiratory fluctuation on the body surface, converts it into a visual waveform signal with the same respiratory amplitude as during radiotherapy positioning through an algorithm, and transmits it to a mobile application (APP) via Bluetooth for user training, so that patients can better control their breathing and improve the quality and efficiency of radiotherapy.

[0023] Specifically, the advantages of the present invention are that it can achieve miniaturization of the device, accuracy and ease of use, simple operation, and convenient portability. In addition, the APP interactive interface is intuitive and easy to use. The system of the present invention enables users to perform independent breathing training in non-medical settings. Through repeated training, the accuracy of breathing control can be improved to adapt to breathing control during radiotherapy, avoiding users spending too much time during radiotherapy, relieving tension, and thus improving the accuracy and efficiency of radiotherapy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above features and advantages of the present invention will be better understood after reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings. In the drawings, the components are not necessarily drawn to scale, and components with similar related properties or characteristics may have the same or similar reference numerals.

[0025] Figure 1 The figure shows the overall structure of an embodiment of a breathing training system for deep inspiration breath-hold radiotherapy according to the present invention.

[0026] Figure 2 Shown Figure 1 The diagram shows the structure of the respiratory amplitude monitoring device in the system embodiment.

[0027] Figure 3A and 3B Shown respectively Figure 2 The diagram shows a top view and a left side view of the installation diagram of the respiratory amplitude monitoring device.

[0028] Figure 4 Shown Figure 1 A schematic diagram of the APP interface display effect in the system embodiment shown.

[0029] Figure 5 Shown Figure 1 The working flow diagram of the system embodiment is shown. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Note that the various aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention.

[0031] Figure 1 FIG. 2 shows the overall structure of an embodiment of a breathing training system for deep inspiration breath-hold radiotherapy according to the present invention. Figure 1 As shown, the breathing training system for deep inspiration breath-hold radiotherapy of this embodiment includes a breathing amplitude monitoring device and a human-computer interaction system.

[0032] The respiratory amplitude monitoring device is placed on the user's body surface, such as Figure 3A As shown, the device is securely attached to the user's body surface via a fixing patch. The fixing patch has good adhesiveness and softness, ensuring that the small accelerometer module in the respiratory amplitude monitoring device accurately measures chest displacement changes.

[0033] The human-computer interaction system is, for example, an APP installed and running on a mobile device (such as a tablet or mobile phone). The human-computer interaction system establishes data transmission (such as Bluetooth) between the mobile device and the respiratory amplitude monitoring device to receive signals from the respiratory amplitude monitoring device, and displays and processes the received signals and data in real time. Figure 3B As shown, the mobile device is secured and supported by a bracket. The bracket can be adjusted in position, height, and angle to facilitate use in various postures. The bracket is designed to be stable, ensuring that the mobile device will not tip or slide during use. The bracket can be provided by the user.

[0034] The structure of the respiratory amplitude monitoring device is shown in Figure 2 As shown, the respiratory amplitude monitoring device further includes a data acquisition unit, a data receiving and processing unit, an algorithm conversion unit, a data transmission unit and a power supply unit.

[0035] The power supply unit, such as a rechargeable battery or button battery, provides power to the data acquisition unit, data receiving and processing unit, algorithm conversion unit, and data transmission unit within the device, ensuring that the device can operate stably for a long time and meet the user's training needs. A power switch is provided on the power supply unit.

[0036] The output end of the data acquisition unit is connected to the input end of the data receiving and processing unit, the output end of the data receiving and processing unit is connected to the input end of the algorithm conversion unit, and the output end of the algorithm conversion unit is connected to the input end of the data transmission unit.

[0037] The data acquisition unit is, for example, a small accelerometer module that monitors the user's breathing amplitude by measuring the displacement of a fixed position on the chest. The small accelerometer module collects tiny displacement changes of the chest in real time and outputs an original displacement signal.

[0038] The principle of accelerometer to measure distance is to calculate the position change by integrating the acceleration signal. The specific steps are as follows:

[0039] (1) Acceleration measurement: An accelerometer measures acceleration in a certain direction in real time. A three-axis accelerometer can measure acceleration in the X, Y, and Z directions.

[0040] (2) Integrate the acceleration signal to obtain velocity: Assume there is a time interval Δt, during which the acceleration measured by the accelerometer is a(t). By integrating the acceleration, we can obtain the velocity v(t):

[0041] v(t)=∫a(t)dt

[0042] (3) Integrate the velocity signal to obtain the displacement: Similarly, by integrating the velocity, the displacement s(t) can be obtained:

[0043] s(t)=∫v(t)dt=∫(∫a(t)dt)dt

[0044] Through these two integration processes, the acceleration signal can be converted into a displacement signal, thereby measuring the distance an object has moved. When measuring respiratory fluctuations, the small accelerometer module is fixed to the chest. The measurement period is relatively short, and error accumulation is small, resulting in a more accurate respiratory fluctuation distance.

[0045] The data receiving and processing unit receives the original displacement signal from the data acquisition unit and converts the displacement signal into a digital signal. Specifically, the original displacement signal is filtered, amplified and digitized to remove noise and interference in the signal, enhance the clarity and stability of the signal, and ensure the accuracy of signal transmission.

[0046] The algorithm conversion unit is implemented by a microprocessor, which converts the digital signal from the data receiving and processing unit into a digital signal matching the amplitude during radiotherapy positioning through linear scalar multiplication in the microprocessor.

[0047] The data transmission unit transmits the digital signal converted by the algorithm conversion unit to the human-computer interaction system installed on the mobile device. The data transmission unit can be wireless, such as using a Bluetooth module, to ensure fast and stable signal transmission, allowing the user to view and analyze respiratory data in real time.

[0048] For example, a human-computer interaction system is an app installed on a mobile device. Users secure their mobile device to a bracket and use the system to perform breathing exercises. The system allows users to view breathing amplitude and waveform data and practice breathing control according to set target ranges and time parameters. Through repeated training, users can improve the accuracy of their breathing control, thereby better coordinating with radiotherapy treatment and enhancing treatment effectiveness and efficiency.

[0049] refer to Figure 4 The example of the system APP interface display effect shown in the figure, the human-computer interaction system in this embodiment provides the following functions:

[0050] (1) DIBH radiotherapy education video: The human-computer interaction system has an embedded education video to introduce the principles and operation methods of DIBH (deep breath hold) technology to users, helping them understand and master the breathing control skills in radiotherapy.

[0051] (2) Tutorial video on how to use the breathing training device: The human-computer interaction system provides a detailed tutorial video to guide users on how to correctly install and use the breathing training device, ensuring that they can operate the device correctly and conduct effective training.

[0052] (3) Inhalation amplitude target range setting: Users can set the target range of inhalation amplitude according to their own situation. The human-computer interaction system provides a convenient setting interface, and different users can adjust the target range to suit their own training needs.

[0053] (4) Breath-holding time setting: The user can set the duration of breath-holding. The human-computer interaction system will conduct real-time monitoring and feedback based on the set time parameters to help the user perform regular breathing training.

[0054] (5) Inhalation amplitude display: The human-computer interaction system displays the user's breathing amplitude in real time for the user's reference and adjustment.

[0055] (6) Respiratory waveform display: The human-computer interaction system displays the user's respiratory cycle in the form of a waveform graph, which is convenient for analysis and adjustment.

[0056] The workflow of the entire breathing training system is as follows Figure 5 As shown, the text description is as follows.

[0057] Step 1: The user performs positioning before radiotherapy. The therapist records the amplitude range of the user's deep inhalation and the breath-holding time during positioning and informs the user.

[0058] Step 2: The user lies on his back, maintaining the same body position as the positioning device. Fix the respiratory amplitude monitoring device to the designated position of the user's chest with the fixing patch.

[0059] Step 3: Turn on the power switch of the respiratory amplitude monitoring device and the Bluetooth switch of the mobile device to connect the respiratory amplitude monitoring device to the mobile device.

[0060] Step 4: Open the HMI app on your mobile device and tap the "DIBH Education" button to watch the DIBH radiotherapy education video. Then, tap the "Tutorial" button to watch the breathing training device tutorial video. Both videos can be watched repeatedly for easy learning.

[0061] Step 5: Fix the mobile device on the bracket and adjust the position, height and angle of the bracket to ensure that the human-computer interaction system APP information on the mobile device can be clearly seen.

[0062] Step 6: Click the "Breathing Training" button on the human-computer interaction system app to set breathing training parameters. Set the target inspiratory amplitude range and breath-hold time consistent with those used during positioning. Enter the breath-hold time target value and amplitude range in the app. The green frame on the patient interface in the app will then move to the target position.

[0063] Step 7: The user begins breathing steadily, then turns on the training button to begin training. The user begins breathing calmly, and the human-computer interaction system announces, "Please inhale, bring the yellow column into the green box, and begin holding your breath." The user begins inhaling. When the inhalation amplitude is within the set target range, the yellow breathing column on the patient interface rises to the green box. The system then begins timing. When the breath-holding time within this range reaches the breath-holding time for positioning, the human-computer interaction system announces, "Training Completed," indicating that the breathing training was successful.

[0064] Although the above methods are illustrated and described as a series of acts for simplicity of explanation, it is to be understood and appreciated that these methods are not limited by the order of the acts, as some acts may occur in a different order and / or concurrently with other acts from those illustrated and described herein or not illustrated and described herein but understandable to those skilled in the art according to one or more embodiments.

[0065] Those skilled in the art will further appreciate that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or a combination of the two. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. A skilled person may implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as resulting in a departure from the scope of the present invention.

[0066] The various illustrative logic blocks, modules, and circuits described in conjunction with the embodiments disclosed herein may be implemented or performed using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0067] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read and write information from / to the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and storage medium may reside in a user terminal as discrete components.

[0068] In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, including any media that facilitates the transfer of a computer program from one location to another. A storage medium may be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks typically reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0069] The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A breathing training system for deep inspiration breath-hold radiotherapy, characterized in that: The system includes a respiratory amplitude monitoring device and a human-computer interaction system, wherein: The respiratory amplitude monitoring device further comprises: The data acquisition unit monitors the user's breathing amplitude by measuring the displacement of a fixed position on the user's chest and outputs an original displacement signal; A data receiving and processing unit receives the original displacement signal from the data acquisition unit and converts the displacement signal into a digital signal; an algorithm conversion unit, which converts the digital signal from the data receiving and processing unit into a digital signal that matches the amplitude during radiotherapy positioning; A data transmission unit, which transmits the digital signal converted by the algorithm conversion unit to the human-computer interaction system; and The power supply unit provides power to the data acquisition unit, data receiving and processing unit, algorithm conversion unit, and data transmission unit in the respiratory amplitude monitoring device; The human-computer interaction system is used to receive digital signals from the respiratory amplitude monitoring device and to display and process the received digital signals in real time.

2. The breathing training system for deep inspiration breath-hold radiotherapy according to claim 1, characterized in that: The respiratory amplitude monitoring device is fixed on the user's body surface, and the fixing method includes sticking it on the user's body surface through a fixing patch.

3. The breathing training system for deep inspiration breath-hold radiotherapy according to claim 1, characterized in that: The human-computer interaction system is installed and run on the mobile device.

4. The breathing training system for deep inspiration breath-hold radiotherapy according to claim 3, characterized in that: The mobile device is fixed and supported by a bracket, which has the function of adjusting the position, height and angle so that the user can use the mobile device in different postures, wherein the bracket can be provided by the user.

5. The breathing training system for deep inspiration breath-hold radiotherapy according to claim 1, characterized in that: A power switch is provided on the power supply unit.

6. The breathing training system for deep inspiration breath-hold radiotherapy according to claim 1, characterized in that: The data acquisition unit is a small accelerometer module.

7. The breathing training system for deep inspiration breath-hold radiotherapy according to claim 1, characterized in that: The data receiving and processing unit is further configured to filter, amplify and digitize the original displacement signal.

8. The breathing training system for deep inspiration breath-hold radiotherapy according to claim 1, characterized in that: The data transmission unit is a wireless transmission method, and the wireless transmission method further includes Bluetooth transmission.

9. The breathing training system for deep inspiration breath-hold radiotherapy according to claim 1, characterized in that: The algorithm conversion unit converts the digital signal from the data receiving and processing unit into a digital signal that matches the amplitude during radiotherapy positioning by linear scalar multiplication.

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