Device for assisting in adjusting breathing amplitude
By using electrical impedance tomography (EIP) technology to display and adjust respiratory waveforms in real time, the problem of tumor relocation caused by irregular breathing during radiotherapy is solved, enabling patients to control their breathing amplitude autonomously and ensuring the accuracy and safety of treatment.
Patent Information
- Application Number
- CN202422601330.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-10-28
AI Technical Summary
During radiotherapy, irregular breathing can cause tumors to shift, affecting the accuracy of treatment. Furthermore, communication between doctors and patients is difficult during deep breathing and breath-holding, making it hard to achieve ideal breathing training.
Using electrical impedance tomography (EI) technology, respiratory amplitude is measured through electrodes, and the respiratory waveform is displayed in real time with thresholds set. The respiratory status is displayed on both the patient and doctor's terminals, allowing the patient to adjust their respiratory amplitude independently. The terminal provides real-time feedback and automatically terminates treatment.
It enables patients to control their breathing amplitude independently, ensuring the accuracy of radiotherapy, reducing cardiotoxic side effects, and improving the real-time nature and accuracy of treatment.
Smart Images
Figure CN223654313U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of medical apparatus and instruments, and particularly relates to a device for assisting in adjusting breathing amplitude. BACKGROUND
[0002] Tumor radiotherapy is a local treatment method for treating tumors by using radiation. The radiation includes alpha, beta and gamma rays generated by radioisotopes and x-rays, electron rays, proton beams and other particle beams generated by various x-ray therapy machines or accelerators. About 70% of cancer patients need radiotherapy in the process of treating cancer, and about 40% of cancer can be radically treated by radiotherapy. Radiotherapy plays an increasingly important role in tumor treatment and has become one of the main means for treating malignant tumors.
[0003] When radiotherapy is performed on tumors in the chest and abdominal positions, the movement of organs caused by the breathing of patients, irregular breathing or deep breathing and the like can change the relative position of tumors, resulting in inaccurate irradiation, and the breathing state of the patient needs to be trained and monitored in real time. Meanwhile, in radiotherapy, the deep inspiration breath-hold state can increase the distance between the chest target area and the heart, thereby reducing the toxic side effects of the heart, and under the deep inspiration breath-hold radiotherapy, the breathing of the patient must be monitored, and the treatment can be triggered only when the breath-hold reaches the threshold. In the process of radiotherapy, the patient and the doctor are in different rooms, and communication is performed through voice intercom, which is greatly hindered, and the breathing training of the patient is difficult to achieve an ideal state. SUMMARY
[0004] The utility model discloses a device for assisting in adjusting breathing amplitude to assist the patient in adjusting the amplitude of breathing independently to solve the above problems. The specific technical scheme is as follows:
[0005] A device for assisting in adjusting breathing amplitude comprises impedance detection electrodes, an impedance detection processor, a display terminal, a setting and prompting terminal, two impedance detection electrodes are arranged, the impedance detection electrodes are connected with the impedance detection processor through wires, the impedance detection processor, the display terminal and the setting and prompting terminal are electrically connected with each other, the impedance detection processor obtains the real-time distance between the two electrodes by measuring the resistance value between the two electrodes and converts the real-time distance data into a breathing waveform graph to be displayed on the display terminal in real time, and a doctor can set the breathing amplitude threshold and display it on the display. The device can enable the patient to see the breathing waveform and the waveform amplitude range in real time, and the patient can control the breathing amplitude in the range set by the doctor independently without language prompting and guidance of the doctor.
[0006] Further, the delay time of breathing waveform acquisition and display is less than 20 ms.
[0007] Further, the display terminal is provided with two, the doctor end and the patient end. The patient end is designed as a wearable display device, avoiding the patient from watching when the body needs to keep a certain position during treatment.
[0008] Further, the setting and prompting terminal is provided with a prompting component, which is an alarm or a prompting lamp; a signal is sent to the radiotherapy equipment synchronously, and the radiotherapy is triggered when the breathing state matches the threshold value, so as to prompt the patient and the doctor whether the breathing amplitude exceeds the range during treatment, and the treatment is automatically terminated when the threshold value is exceeded.
[0009] Further, the setting and prompting terminal has a record saving software function. The breathing amplitude change during treatment can be played back by the doctor after treatment, so as to verify the treatment effect.
[0010] Further, the principle of measuring the breathing amplitude is impedance method, the change of impedance during breathing is measured, and the received signal is a voltage signal. The electric impedance detection processor is provided with a breathing simulation circuit for measuring the breathing amplitude, which is connected in sequence and consists of a breathing signal receiving, a breathing signal and carrier current coupling circuit, a band pass amplifier, a synchronous detector and a low pass amplifier. By transmitting a high-frequency current, i.e. a carrier current (about 60 KHZ) between two electrodes, the signal is added to the breathing signal (low-frequency signal), and then becomes a modulated high-frequency signal together. The breathing signal is detected through detection, and then an electric signal changing with breathing is formed. The chest movement during breathing causes the change of human body resistance, and the change graph of impedance value describes the dynamic waveform of breathing amplitude. The numerical calculation of breathing detection is mainly through multi-level threshold to identify the waveform peak and valley, and the optimal breathing rate value is screened in combination with historical data trend. The accuracy and stability of the breathing value are ensured by eliminating various possible interference on the breathing waveform.
[0011] Further, the electric impedance detection processor and the display terminal are connected and transmitted through a gigabit network cable.
[0012] Further, the device is provided with a quality assurance program to ensure that the output breathing waveform is linearly related to the change of impedance during breathing, and the correlation coefficient of the waveform amplitude and the impedance value is scaled.
[0013] The utility model discloses a kind of respiratory simulation circuit and display terminal, which can be used to measure the respiratory amplitude of patient, and the respiratory amplitude of patient can be displayed in real time.
[0014] Meanwhile, the doctor can input the threshold value suitable for the patient through the setting and prompting terminal according to the actual situation of the patient, and the threshold value is displayed through the display terminal. During radiotherapy, the patient can adjust the respiratory amplitude by observing the real-time respiratory amplitude on the display terminal, and control the respiratory amplitude within the threshold value, so as to ensure the accuracy of radiotherapy. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 The utility model discloses a structure schematic view.
[0016] Figure 2 The utility model discloses a respiratory simulation circuit for measuring respiratory amplitude.
[0017] Figure 3 The utility model discloses a display terminal for displaying respiratory amplitude diagram in real time.
[0018] Reference signs:
[0019] 1-resistance and impedance detection electrode. DETAILED DESCRIPTION
[0020] Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.
[0021] As Figure 1The utility model provides an apparatus for assisting the adjustment of respiratory amplitude, characterized in that it comprises impedance detection electrodes 1, impedance detection processors, display terminals, setting and prompting terminals; the impedance detection electrodes are provided with two; the impedance detection electrodes are connected with the impedance detection processors through wires, and the impedance detection processors, display terminals, setting and prompting terminals are electrically connected with each other; the impedance detection processors obtain the real-time distance between the two electrodes by measuring the resistance value between the two electrodes and convert the real-time distance data into a waveform diagram displayed on the display terminals; the respiratory waveform acquisition and display delay is less than 20 ms. The respiratory amplitude threshold value is set through the setting and prompting terminals and displayed on the display, and the respiratory amplitude condition is displayed in real time, such as Figure 3 The utility model discloses a device for assisting the adjustment of respiratory amplitude, characterized in that it comprises impedance detection electrodes 1, impedance detection processors, display terminals, setting and prompting terminals; the impedance detection electrodes are provided with two; the impedance detection electrodes are connected with the impedance detection processors through wires, and the impedance detection processors, display terminals, setting and prompting terminals are electrically connected with each other; the impedance detection processors obtain the real-time distance between the two electrodes by measuring the resistance value between the two electrodes and convert the real-time distance data into a waveform diagram displayed on the display terminals; the respiratory waveform acquisition and display delay is less than 20 ms. The respiratory amplitude threshold value is set through the setting and prompting terminals and displayed on the display, and the respiratory amplitude condition is displayed in real time, such as
[0022] The display terminals are provided with two, a doctor terminal and a patient terminal. The patient terminal is designed as a wearable display device to avoid the patient from watching during treatment when the body needs to maintain a certain position.
[0023] The setting and prompting terminals are provided with prompting components, which are alarmers or prompting lamps; signals are sent to the radiotherapy equipment synchronously, and the radiotherapy is triggered when the respiratory state is consistent with the threshold value, so that the patient and the doctor can be prompted whether the respiratory amplitude exceeds the range during treatment, and the treatment is automatically terminated when the threshold value is exceeded.
[0024] The setting and prompting terminals have a record saving software function. The doctor can replay the respiratory amplitude change during treatment to verify the treatment effect after treatment.
[0025] The principle of measuring respiratory amplitude is impedance method, and the change of impedance during respiration is measured. The received signal is a voltage signal. The connection block diagram of the respiratory simulation circuit for measuring respiratory amplitude is as shown in Figure 2 The respiratory simulation circuit for measuring respiratory amplitude is provided with a respiratory signal receiving, a respiratory signal and carrier current coupling circuit, a band pass amplifier, a synchronous detector and a low pass amplifier connected in sequence.
[0026] By emitting a high-frequency current between two electrodes, namely the carrier current (about 60KHZ), the signal is added to the respiratory signal (low-frequency signal), and then together into a modulated high-frequency signal, after detection, the respiratory signal is detected, and then a respiratory-varying electrical signal is formed. During the breathing process, the chest movement causes the body resistance to change, and the impedance value change graph describes the dynamic waveform of the breathing amplitude. The numerical calculation of the respiratory detection is mainly through multi-level threshold to identify the waveform peak and trough, and the optimal respiratory rate value is screened by combining the historical data trend. By eliminating various possible disturbances on the respiratory waveform, the accuracy and stability of the respiratory value are ensured.
[0027] The electrical impedance detection processor is connected and transmitted with the display terminal through the gigabit network cable. The device is provided with a quality assurance program to ensure that the output respiratory waveform is linearly related to the impedance change during breathing, and the correlation coefficient of the waveform amplitude and the impedance value is scaled.
[0028] In use, first, two detection electrodes are attached to both sides of the thorax and marked with position marks, the measurement circuit power is turned on, and the impedance value between the two electrodes under different breathing states is continuously measured. The electrical impedance detection processor converts the resistance value change signal into a digital waveform displayed on the doctor display terminal and the patient display terminal through an algorithm. The doctor controls the patient's breathing state during treatment according to the upper and lower threshold values of the respiratory waveform set by the software. During the treatment process, the patient can observe his own breathing state according to the display terminal and compare it with the reference breathing state, and when the deviation occurs, the patient can adjust the breathing independently, so that the respiratory curve and the reference curve are consistent. When the over-limit condition occurs, the software changes the waveform color to prompt the patient to adjust the breathing state and records the respiratory waveform of the patient during the entire treatment process in real time.
[0029] The above describes the preferred embodiment of the patent in detail, but the patent is not limited to the above-mentioned embodiment, and various changes can be made within the knowledge range of ordinary skilled persons in the art without departing from the purpose of the patent.
Claims
1. A device to assist in regulating respiratory amplitude, characterized in that: It includes resistance impedance detection electrode, resistance impedance detection processor, display terminal, setting and prompting terminal; the resistance impedance detection electrode is provided with two; the resistance impedance detection electrode is connected with the resistance impedance detection processor through wire, the resistance impedance detection processor, display terminal, setting and prompting terminal are electrically connected with each other; the resistance impedance detection processor obtains the real-time distance between two electrodes by measuring the resistance value between two electrodes and converts the real-time distance data into respiratory waveform diagram and displays on the display terminal; the setting and prompting terminal sets the respiratory amplitude threshold and displays on the display.
2. A device to assist in regulating breath amplitude as defined in claim 1, wherein: The respiratory waveform acquisition and display delay time is less than 20 ms.
3. The device of claim 1, wherein: The display terminal is provided with two, doctor end and patient end; wherein the patient end is a wearable display device.
4. The device of claim 1, wherein: The setting and prompting terminal is provided with a prompt component, which is an alarm or a prompt light; a signal is sent to the radiotherapy equipment synchronously, the radiotherapy is triggered when the respiratory state is consistent with the threshold, and the treatment is automatically terminated when the threshold is exceeded.
5. The device of claim 1, wherein: The setting and prompting terminal has a record saving software.
6. The device of claim 1, wherein: The resistance impedance detection processor is provided with a breathing simulation circuit for measuring the breathing amplitude, which is connected with the breathing signal receiving, breathing signal and carrier current coupling circuit, band pass amplifier, synchronous detector and low pass amplifier in sequence.
7. The device of claim 1, wherein: The resistance impedance detection processor and the display terminal are connected and transmitted through gigabit network cable.
8. The device of claim 1, wherein: The device is provided with a quality assurance program to ensure that the output respiratory waveform is linearly related to the change of impedance during breathing, and the correlation coefficient of the waveform amplitude and impedance value is scaled.