Valsalva respiration monitoring device and method

Abstract

The invention relates to a Valsalva respiration monitoring device and method. The device comprises a chest detection unit, an abdomen detection unit, a gas detection unit and a display unit. The chest detection unit is used for collecting chest posture information containing chest dimension values; the abdomen detection unit is used for collecting abdomen posture information containing an abdomen dimension value based on chest posture information of the chest detection unit so as to form collaborative detection of abdominal respiration; in response to the change trend that the chest posture information provided by the chest detection unit is the same as the abdomen posture information formed by the abdomen detection unit, the gas detection unit collects the pressure value of the exhaled gas of the patient; when the gas detection unit detects that the pressure value of gas formed in the first expiration action during single Valsalva breathing of the patient is lower than a first threshold value and the continuous time when the pressure value is lower than the first threshold value reaches a second threshold value, the first expiration action is completed; and the abdomen detection unit and the chest detection unit return to the standby state and trigger the display unit to prompt the doctor and the patient to restart single Valsalva breathing.

Description

[0001] The original basis of this divisional application is the patent application with application number 202210234844.7, application date March 10, 2022, and invention name “A Valsalva respiratory pressure detection method and device”. Technical Field

[0002] The present invention relates to the field of medical machinery, and in particular to a Valsalva respiratory monitoring device and method. Background Art

[0003] Valsalva breathing is a breathing method that involves inhaling through abdominal breathing and then closing the glottis, thereby increasing abdominal and thoracic pressure. In clinical practice, Valsalva breathing can create a state of stress by tightening the diaphragm. Using Doppler or ultrasound technology to monitor the brain or heart during this stressful state can provide doctors with additional diagnostic imaging support.

[0004] The existing technology provides many detection methods for Valsalva breathing. Chinese patent number CN108186005A discloses a device for visually quantifying the Valsalva maneuver, comprising: a first connecting tube, a filter, a breathing filter, a gas pressure gauge, a three-way joint, a second connecting tube, and an airbag; the filter and breathing filter are both removably and sealably mounted on the left port of the first connecting tube, the right port of the first connecting tube is sealedly connected to the left port of the three-way joint, the upper port of the three-way joint is sealedly connected to the gas pressure gauge, the right port of the three-way joint is sealedly connected to the left port of the second connecting tube, and the right port of the second connecting tube is sealedly connected to the airbag. Visualizing the Valsalva breathing maneuver helps doctors determine whether the gas pressure meets the standard. The Chinese patent number CN209186977U relates to an auxiliary device for Valsalva, including an air blowing mask for buckling on the human mouth, an elastic fastening portion near the edge of the air blowing mask, and a fixing belt for fixing the air blowing mask, which includes a transverse fixing belt and a longitudinal fixing belt. The air blowing mask is connected to a pressure gauge via a medium tube. In the above-mentioned prior art, most of the Valsalva breathing standards used for clinical diagnosis focus on whether the patient meets the air blowing pressure standard. However, in the actual Valsalva breathing process, since many people in daily life use chest breathing, they may adopt the incorrect chest breathing posture when the doctor requires abdominal breathing. In such a case, even if the air blowing pressure meets the standard, the patient's chest and abdominal muscle groups may not exert the correct force, resulting in failure to achieve the expected pressure effect.

[0005] Furthermore, Chinese patent number CN112957687A discloses an abdominal breathing training system, comprising an intelligent terminal, an abdominal breathing movement monitoring sensor, a physiological parameter sensor, a communication module, and a central controller; the abdominal breathing movement monitoring sensor is provided with an elastic abdominal belt for fixing to the user's abdomen and collecting abdominal movement signals during breathing; the physiological parameter sensor is used to synchronously collect the user's physiological parameter signals; the collected abdominal movement signals and physiological parameter signals are processed by the central controller and synchronously transmitted to the intelligent terminal via the communication module, and the abdominal movement information and physiological parameter signals are displayed in real time on the intelligent terminal. On the one hand, the abdominal movement signal alone cannot determine whether the patient's abdominal movement is caused by the abdomen driven by chest breathing or whether abdominal breathing is actually occurring. On the other hand, the single detection of abdominal movement may result in false detection of non-respiratory movement during the respiratory interval. Therefore, based on the detection of abdominal breathing and glottal closure in the Valsalva breathing maneuver for patient physiological monitoring, it is necessary to design a Valsalva breathing pressure detection method and device.

[0006] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the Invention

[0007] Prior art uses heart or brain imaging while a patient performs Valsalva breathing to provide effective evidence for doctors' diagnosis of stroke, heart rhythm disorders, and other conditions. Studies have shown that improper Valsalva breathing can lead to missed diagnoses exceeding 40% when detecting intracranial emboli or tricuspid valve problems. Therefore, the effectiveness of performing the standard Valsalva breathing maneuver has a significant impact on the detection rate of conditions such as stroke and myocardial infarction.

[0008] The Valsalva breathing maneuver primarily involves a tension phase, where the muscles contract and create high pressure in the chest and brain, and a release phase, where the muscles relax and return to a normal state. Based on these two phases, Valsalva breathing can be divided into the inhalation preparatory phase, the exhalation phase to reach a pressure of at least 40 cm H₂O, the breath-holding phase that closes the glottis for over 10 seconds, and the slow inhalation phase to return to a steady state. Crucially, both inhalation and exhalation rely on the contraction of the abdominal muscles and diaphragm.

[0009] Abdominal breathing relies primarily on contraction of the abdominal muscles and diaphragm. The key lies in coordinating the activity of the diaphragm and abdominal muscles during breathing. During inhalation, the abdominal muscles relax, the diaphragm contracts, and the abdomen moves downward, expanding the abdominal wall. During exhalation, the abdominal muscles contract, the diaphragm relaxes, and the abdomen returns to its original position, causing the abdomen to indent, increasing the tidal volume of exhaled air. Unlike chest breathing, abdominal breathing creates a synergistic relationship between the chest and abdomen. The expansion of the abdomen creates a cavity that drives chest expansion, allowing air to penetrate deeper into the lungs.

[0010] Since many people, such as office workers, have a long-term habit of using the chest cavity for chest breathing and have a small lung capacity, they do not use abdominal breathing or the exhalation force is not strong enough when performing Valsalva breathing, resulting in Valsalva breathing failure, which leads to unsatisfactory test results.

[0011] In response to the shortcomings of the existing technology, the present invention provides a Valsalva respiratory pressure detection device, which includes a gas detection unit for generating a pressure value of the exhaled gas of a patient wearing the gas detection unit; a physiological monitoring unit for monitoring physiological changes of the body in different breathing movements; an abdominal detection unit for monitoring changes in abdominal dimension values ​​due to dynamic changes in abdominal expansion and contraction; a chest detection unit for monitoring changes in chest dimension values ​​due to dynamic changes in chest expansion and contraction; and a display unit, which is configured to display the human body indicator data monitored by each module.

[0012] According to a preferred embodiment, the chest detection unit is used to collect chest posture information including chest dimension values; the abdominal detection unit collects abdominal posture information including abdominal dimension values ​​based on the chest posture information of the chest detection unit to form a coordinated detection of abdominal breathing; the gas detection unit generates a pressure value of the exhaled gas of the patient wearing the gas detection unit in response to the same change trend of the chest posture information provided by the chest detection unit and the abdominal posture information formed by the abdominal detection unit.

[0013] According to a preferred embodiment, in response to a decrease in the abdominal dimensional value collected by the abdominal detection unit for collecting abdominal posture information including abdominal dimensional values, the gas detection unit detects the pressure value of the patient's exhaled gas. After the pressure value detected by the gas detection unit for generating the pressure value of the patient's exhaled gas wearing the gas detection unit reaches a first threshold, the abdominal detection unit for collecting abdominal posture information including abdominal dimensional values ​​and the chest detection unit for collecting chest posture information including chest dimensional values ​​monitor the patient's abdominal posture and chest posture to ensure that the patient completes the physiological test while holding their breath after exhalation. When the pressure value of the patient's exhaled gas detected by the gas detection unit reaches the first threshold, in response to no dynamic change in the abdominal dimensional value associated with the patient's abdominal inhalation monitored by the abdominal detection unit and the chest dimensional value associated with the patient's chest inhalation monitored by the chest detection unit, the physiological monitoring unit for performing physiological testing on the patient during Valsalva respiration transmits the collected physiological indicator data of the patient during the tension phase to a display unit for displaying the physiological indicator data to a physician.

[0014] According to a preferred embodiment, when a patient wearing a gas detection unit begins to perform an inhalation action to increase the intrathoracic pressure in preparation for examining the physiological state of tissues in the body, the abdominal detection unit can collect the abdominal dimension value of the patient when performing abdominal breathing; the gas detection unit detects the pressure value of the patient's exhaled gas in response to the reduction of the abdominal dimension value collected by the abdominal detection unit, and after the pressure value reaches a first threshold, the abdominal detection unit and the chest detection unit monitor the patient's abdominal dimension value and chest dimension value based on the maintenance of the patient's non-breathing state after exhalation; when the abdominal dimension value monitored by the abdominal detection unit and the chest dimension value monitored by the chest detection unit do not change dynamically, the physiological monitoring unit, in response to the pressure value reaching the first threshold, transmits the collected physiological phenomenon information of the patient in the tension period to the control module.

[0015] The beneficial effects of this technology: When performing TCD bubble detection, patients, especially those at risk of diseases such as stroke and myocardial infarction, are required to correctly complete Valsalva breathing to obtain a higher efficiency in disease detection. In response to the requirements of Valsalva breathing, this device uses coordinated detection of the abdomen and chest to determine whether the patient's first inhalation action during Valsalva breathing is correct, or whether abdominal breathing is performed by expanding the abdominal muscles. Through coordinated detection of the abdomen and chest, this device determines whether the patient's abdomen is exerted during the patient's first inhalation action, and during the first exhalation action, this device determines whether the patient uses the expanded abdominal muscles to squeeze the lungs, thereby finding the cause of failure for the patient's first exhalation action not reaching the air pressure value standard. At the same time, when the patient completes the first exhalation action and enters the first breath-holding action, the mouth airflow detection and the coordinated dimensional value changes of the chest and abdomen are detected to accurately determine whether the patient is in a complete breath-holding state with the valve closed. Based on the patient's second inhalation action, the release period and tension period nodes of Valsalva breathing corresponding to the patient's physiological phenomenon are monitored, thereby providing doctors with more accurate diagnostic basis.

[0016] The advantages of this technical solution are: 1. Monitoring of patients during Valsalva breathing is achieved through detection of dimensional values ​​of the abdomen and chest, thereby ensuring that patients complete Valsalva breathing with abdominal breathing, and ensuring that subsequent imaging examinations of the brain or heart are positive. 2. Detection of expiratory pressure ensures that patients during Valsalva breathing reach the required expiratory pressure, thereby ensuring that patients complete Valsalva breathing with qualified expiratory pressure, thereby ensuring that subsequent imaging examinations of the brain or heart are positive. 3. Since the abdomen and chest of the patient are monitored throughout the entire process by devices such as abdominal belts and chest belts, the doctor will not make misjudgments due to visual observation of chest and abdominal expansion, and there will be no physical contact between the doctor and the patient, thereby avoiding discomfort caused to the patient by physical contact. 4. Due to the restraining effect of the abdominal belt, the patient can be prompted to expand the abdomen and inhale, thereby helping patients in a tense state to perform correct abdominal breathing.

[0017] According to a preferred embodiment, when a patient in a tension period exhales based on a doctor's instruction and enters a release period, the physiological monitoring unit collects the same physiological indicator data of the patient as that of a patient in a tension period in response to the changing trend of the chest posture information provided by the chest detection unit and the abdominal posture information formed by the abdominal detection unit becoming larger at the same time, and sends the data to a display unit that displays the physiological indicator data to the doctor.

[0018] The beneficial effects of this technology: By monitoring the patient's abdomen during inhalation and exhalation, the release phase and tension phase of the patient can be correctly distinguished, and the effects of physiological phenomena collected at different phases can be compared and judged. Since the evaluation of the results of the TCD bubble test depends on the graded judgment of the number of microbubbles, and according to relevant literature, the release phase of the Valsalva breathing process produces more microbubbles than the tension phase, the doctor's evaluation of the patient's TCD bubble test results needs to be judged in combination with the number of microbubbles in the release and tension phases of the Valsalva breathing process. This system is based on the change in the dimensional value of the abdomen, and the system collects images of physiological phenomena for patients who change from the tension phase to the release phase, thereby capturing the complete process of microbubble appearance in the heart caused by the Valsalva breathing process.

[0019] According to a preferred embodiment, when a patient wearing a gas detection unit begins a chest compression maneuver to prepare for examining the physiological state of internal tissue, the gas detection unit detects the pressure of the patient's exhaled gas in response to a dynamic trend of a set of values, including chest dimensions detected by the chest detection unit and abdominal dimensions detected by the abdominal detection unit, increasing simultaneously, with the goal of confirming that the patient is correctly preparing for abdominal breathing and exhalation. Preferably, the chest compression maneuver is an inspiratory maneuver.

[0020] The beneficial effects of this technology: Since the interval between the patient's abdominal contraction and exhalation is short, the gas detection unit's gas pressure detection during exhalation is not ideal. The gas detection unit's air pressure detection working time is set during the patient's inhalation preparation time before exhalation. On the one hand, when the abdomen and chest are not expanded at the same time, it is determined that it is not abdominal breathing and the gas detection unit will not work; on the other hand, when both the abdomen and chest are not expanded, it is determined that it is not the patient's detection time and the gas detection unit will not work, thereby improving the working accuracy of the gas detection unit and not generating redundant invalid data to interfere with the doctor's diagnosis of clinical patients.

[0021] According to a preferred embodiment, the abdominal detection unit switches from a standby state to a working state of collecting the patient's abdominal dimension values ​​in response to the action of the patient wearing the gas detection unit, so that the working state of the respiratory pressure detection device is not affected by the patient wearing the abdominal detection unit and being in a non-detection time.

[0022] The beneficial effects of this technology: In normal usage scenarios, patients may have to wear abdominal belts and chest belts first. Since human breathing is continuous, the values ​​detected by the abdominal belts and chest belts worn by patients during non-detection time will change, triggering the gas detection unit to work. Since most current gas detection units use pointer pressure gauges for pressure detection, and the static state of the pointer pressure gauge before use has an important impact on the low error of subsequent air pressure detection, the pointer pressure gauge does not need to receive external gas when it is not working, such as possible air conditioning wind or other wind.

[0023] According to a preferred embodiment, when the gas detection unit detects that the pressure value of the gas formed in the first exhalation action of the patient during a single Valsalva breath is lower than a first threshold value and the continuous time for which the gas pressure value is lower than the first threshold value reaches a second threshold value, the abdominal detection unit and the chest detection unit return to the standby state and trigger the display unit to prompt the doctor and the patient to restart a single Valsalva breath.

[0024] According to a preferred embodiment, the abdominal detection unit includes an abdominal belt that surrounds the patient's abdomen and an abdominal belt displacement detector placed on the abdominal belt. When the patient's abdomen bulges or contracts during breathing, the patient's abdominal dimension is obtained by the displacement of the abdominal belt displacement detector placed on the patient's abdomen. The chest detection unit includes a chest belt that surrounds the patient's thorax and a chest belt displacement detector placed on the chest belt. When the patient's chest bulges or contracts during breathing, the patient's chest dimension is obtained by the displacement of the chest belt displacement detector placed on the patient's abdomen.

[0025] According to a preferred embodiment, the gas detection unit includes a pressure detection component, which can detect the gas pressure of the patient's exhaled mouth by receiving gas from the patient's mouth and generate a corresponding pressure value. Preferably, Valsalva breathing is Valsalva breathing.

[0026] According to a preferred embodiment, the physiological monitoring unit is provided with a pulsed Doppler and monitors the blood flow spectrum of the tricuspid valve orifice of the patient when the patient is in a tension phase.

[0027] A Valsalva respiratory pressure detection method comprises the following steps:

[0028] When the patient wearing the gas detection unit begins to perform chest compressions in preparation for examining the physiological state of internal tissues, the abdominal detection unit can collect abdominal dimension values ​​of the patient during abdominal breathing;

[0029] The gas detection unit detects a pressure value of the patient's exhaled gas in response to a decrease in the abdominal dimension value collected by the abdominal detection unit. After the pressure value reaches a first threshold, the abdominal detection unit and the chest detection unit monitor the abdominal dimension value and the chest dimension value of the patient based on the patient maintaining a non-breathing state after exhalation.

[0030] When the abdominal dimension values ​​monitored by the abdominal detection unit and the chest dimension values ​​monitored by the chest detection unit do not change dynamically, the physiological monitoring unit transmits the collected physiological phenomenon information of the patient in the tension period to the control unit in response to the pressure value reaching the first threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram illustrating the positions of abdomen detection and chest detection according to the present invention.

[0032] Reference numerals

[0033] 100: ventral side; 110: first chest detection area; 120: first abdomen detection area; 200: dorsal side; 210: second chest detection area; 220: second abdomen detection area. DETAILED DESCRIPTION

[0034] The following is a detailed description with reference to the accompanying drawings.

[0035] Example 1

[0036] The present invention provides a Valsalva respiratory pressure detection device, comprising a first module, a second module and a third module.

[0037] The first module can collect the patient's physiological index information and posture change information before and during Valsalva breathing.

[0038] The second module is configured to perform a detection area correction on at least one detection step when the third module monitors the patient's Valsalva respiration based on the patient's body physiological indicator information and posture change information before Valsalva respiration provided by the first module.

[0039] The third module is configured to complete the detection steps corrected by the second module for the patient's Valsalva breathing process based on the patient's body physiological index information and posture change information during the Valsalva breathing process provided by the first module.

[0040] According to a preferred embodiment, the first module includes: a gas detection unit, a chest detection unit, and an abdominal detection unit. The chest detection unit can collect chest dimension values ​​of the patient's inhalation and exhalation during cyclic breathing based on a first pressure sensing component arranged around the chest when the chest expands or contracts; the abdominal detection unit can collect abdominal dimension values ​​of the patient's inhalation and exhalation during cyclic breathing based on a second pressure sensing component arranged around the abdomen when the abdomen expands or contracts; the gas detection unit can be worn on the patient's face and form a certain space with the patient's face, so as to sense the gas flow at the patient's mouth and monitor the air pressure of the gas exhaled from the patient's mouth. The first module includes a chest detection unit that detects the patient's chest posture information and an abdominal detection unit that detects the patient's abdominal posture information.

[0041] Before the patient performs Valsalva breathing, the first module worn on the patient during non-detection time collects the respiratory posture information of the patient's chest and abdomen during daily breathing. The respiratory posture information includes chest dimension values ​​and abdominal dimension values. In response to the information collection of the respiratory posture of the chest and abdomen related to the patient's daily breathing provided by the first module, the second module generates data suitable for the individual patient for accurately detecting the amplitude of the undulating areas of the chest and abdomen of the patient whose chest and abdomen posture information is collected. Based on the data of the amplitude of the undulating areas at different positions of the patient's chest and abdomen, the second module corrects the pressure detection accuracy of different areas of the patient's chest or abdomen during Valsalva breathing in the third module. Preferably, the amplitude of the undulating areas of the patient's chest and abdomen can be calculated and sorted based on the curvature values ​​of the different undulating areas of the patient's chest and abdomen.

[0042] When a patient performs Valsalva breathing, the chest and abdomen will produce large fluctuations. The present application monitors the dimensions of the patient's abdomen and chest to learn whether the patient's diaphragm located in the abdomen and the intercostal muscles located in the chest participate in the breathing process during Valsalva breathing. However, in the process of monitoring the dimensional values ​​of the chest and abdomen, patients with different physical fitness will have areas with narrowed fluctuation amplitudes in the abdomen and chest. For example, the area around the navel of a patient with abdominal fat accumulation due to long-term drinking has a smaller fluctuation amplitude during Valsalva breathing, especially compared with the fluctuation amplitude of the right and left hypochondriacal regions of the patient's abdomen. When the dimensional value changes of the patient's abdomen are learned by pressure detection of the patient's abdominal pressure value changes, the abdominal area with a smaller fluctuation amplitude change will cause the system to produce a large error in the dimensional value detection of the patient's abdominal area, and the system will misjudge whether the patient's diaphragm participates in Valsalva breathing, and ultimately misdiagnose the correct Valsalva breathing action as an incorrect Valsalva breathing action.

[0043] According to a preferred embodiment, the second module can divide the patient's detection area into at least four areas according to the size of the area's changing curvature based on the chest and abdominal breathing postures of the patient during daily breathing provided by the first module: a first chest detection area 110 located at the chest position of the human body's ventral side 100, a second chest detection area 210 located at the chest position of the human body's dorsal side 200, a first abdominal detection area 120 located at the abdominal position of the human body's ventral side 100, and a second abdominal detection area 220 located at the abdominal position of the human body's dorsal side 200, and adjust the pressure detection accuracy of the four areas based on the order of the changing curvatures of the four areas, i.e., the first abdominal detection area 120>the first chest detection area 110>the second abdominal detection area 220>the second chest detection area 210, and make the pressure detection accuracy of each area inversely proportional to its changing curvature. Based on the detection results of the first abdomen detection area 120 > the first chest detection area 110 > the second abdomen detection area 220 > the second chest detection area 210, the pressure detection accuracy of the above four areas can be ranked as the first abdomen detection area 120 < the first chest detection area 110 < the second abdomen detection area 220 < the second chest detection area 210. Figure 1 shown.

[0044] This system acquires the fluctuation amplitude of each area of ​​the patient's abdomen based on the patient's daily breathing data, and generates different abdominal pressure detection accuracy based on the individual differences of different patients, so that the abdominal area with narrowed fluctuation amplitude can also obtain correct detection results based on the adjusted pressure area, ensuring that the system can obtain the correct dimensional value of the patient's abdomen. The system accurately determines whether the patient's diaphragm is contracting or relaxing, and thus correctly determines whether the patient's Valsalva breathing action is standard. The patient's abdominal area includes the right hypochondrium, epigastric area, left hypochondrium, right lumbar area, umbilical area, left lumbar area, right inguinal area, hypogastric area and left inguinal area.

[0045] The TCD bubble test for early detection of stroke or myocardial infarction depends on the patient performing correct Valsalva breathing. Correct Valsalva breathing can improve the patient's positive detection rate. The key to achieving the standard Valsalva breathing maneuver lies in abdominal breathing and expiratory pressure. However, in the actual abdominal breathing test process, due to individual differences, abdominal belts and chest belts of the same specifications produce different test standards for patients. Based on individual differences, the present invention collects data from individuals before testing and generates a test mode suitable for the individual patient. Pressure sensors in different areas collect information on the patient's chest and abdomen during daily breathing, thereby generating posture change trends of various areas of the patient's chest and abdomen during breathing. The second module corrects the pressure detection accuracy of the third module in different areas that are consistent with the patient's individual, thereby avoiding misdiagnosis due to subtle posture changes in the abdomen and chest during Valsalva breathing. In response to the motion recognition of the mouth unit of the first module worn by the patient, when the patient wearing the mouth unit of the first module begins to perform chest pressurization, the third module can trigger the gas pressure recognition of the mouth unit in advance based on the decrease in the trend of the patient's abdominal dimension value during abdominal breathing collected by the abdominal detection unit of the first module, thereby ensuring that the gas pressure of the patient's exhalation during a single Valsalva breathing process is fully detected.

[0046] According to a preferred embodiment, when the air pressure detected by the mouth unit of the first module reaches a first threshold, the chest detection unit and the abdomen detection unit of the first module jointly detect changes in the posture of the patient's chest and abdomen. When the abdominal and chest dimensions monitored by the abdomen detection unit and the chest detection unit do not dynamically change due to the patient's non-breathing state, the third module transmits the physiological phenomenon information of the patient in the tension phase, collected by the physiological monitoring unit, to the display unit.

[0047] According to a preferred embodiment, the chest detection unit can collect the pressure value generated when the chest changes dynamically and obtain the changed chest dimension value in combination with the initial dimension value, so as to feel the breathing posture of the chest and the changing trend of the breathing posture.

[0048] According to a preferred embodiment, the abdominal detection unit can collect the pressure value generated when the abdomen changes dynamically, and obtain the changed abdominal dimension value in combination with the initial dimension value, so as to feel the breathing posture of the abdomen and the changing trend of the breathing posture.

[0049] Example 2

[0050] The present invention provides a Valsalva respiratory pressure detection device, which includes a gas detection unit for generating a pressure value of exhaled gas of a patient wearing the gas detection unit; a physiological monitoring unit for monitoring physiological changes of a body in different respiratory movements; an abdominal detection unit for monitoring changes in abdominal dimension values ​​caused by dynamic changes in abdominal expansion and contraction; a chest detection unit for monitoring changes in chest dimension values ​​caused by dynamic changes in chest expansion and contraction; and a display unit configured to display human body index data monitored by each module.

[0051] When the patient wearing the gas detection unit starts to inhale, the abdominal detection unit can collect the abdominal dimension value of the patient when performing abdominal breathing; the gas detection unit detects the pressure value of the patient's exhaled gas in response to the reduction of the abdominal dimension value collected by the abdominal detection unit, and after the pressure value reaches the first threshold, the abdominal detection unit and the chest detection unit monitor the patient's abdominal dimension value and chest dimension value based on the patient's non-breathing state after exhalation; when the abdominal dimension value monitored by the abdominal detection unit and the chest dimension value monitored by the chest detection unit do not change dynamically, in response to the pressure value reaching the first threshold, the physiological monitoring unit transmits the collected physiological phenomenon information of the patient in the tension period to the display unit.

[0052] When patients present with symptoms such as headaches, doctors may perform a bubble test to monitor for microemboli. The bubble test involves injecting air, performing Valsalva breathing, and monitoring the patient's brain and heart during the tension phase.

[0053] The doctor mixes 1 ml of air with 9 ml of saline and injects the mixture into the patient. The patient performs Valsalva respiration, forcing blood flow through the foramen ovale to flow differently than during rest. Valsalva respiration creates periods of tension and release, distinct from rest. During these two periods, the presence of microemboli, which can lead to cerebral infarction, can be detected by monitoring the number of bubbles within the heart.

[0054] In specific real-time operations, Valsalva breathing has an important impact on the positive rate of microemboli detection in patients. If Valsalva breathing is not standard, the patient's blood flow cannot form tension and release periods that are different from the resting period.

[0055] According to a preferred embodiment, the resting phase refers to the patient's normal breathing state in daily life. The tension phase refers to the state after Valsalva breathing, when the patient's diaphragm tightens, the glottis closes, and chest pressure rises. The release phase refers to the state during the tension phase when the patient exhales gently and the diaphragm relaxes. A single tension phase and a single release phase constitute a complete Valsalva breathing process.

[0056] After the mixture is injected, the patient wears a gas detection unit, an abdominal detection unit, and a chest detection unit. After receiving a voice prompt, the patient inhales to the maximum capacity they can reach. At this time, the abdominal detection unit detects the increase in the patient's abdominal dimension based on the changes in the patient's abdominal posture. As the patient continues to inhale, the system can provide voice prompts encouraging inhalation until the patient stops inhaling or the patient's abdominal dimension no longer increases. At this point, the system determines that the patient is using abdominal breathing and has made correct preparations.

[0057] Before the patient exhales into the gas detection unit, the abdomen will be moved first and then exhale, so the abdominal detection unit will detect that the dimension value of the patient's abdomen has decreased. The above changes trigger the gas detection unit to detect the pressure value of the patient's exhaled gas. When the pressure of the exhaled gas reaches the first threshold, the abdominal detection unit and the chest detection unit can monitor the patient's abdomen and chest at the same time. When the patient's abdominal dimension value and chest dimension value do not change and the duration reaches the second threshold, the physiological monitoring unit intercepts the physiological phenomenon monitoring results of this time and sends them to the display unit to provide effective monitoring data for the doctor.

[0058] When a patient in the tension phase exhales and enters the release phase based on the doctor's instructions, the physiological monitoring unit collects the same physiological phenomenon information of the patient as that of the patient in the tension phase in response to the reduction of the abdominal dimension value collected by the abdominal detection unit and sends it to the display unit.

[0059] At the same time, after receiving valid data from the tension phase, the patient can slowly exhale based on the doctor's or system's voice prompts, allowing themselves to enter the release phase. At this time, the patient's abdominal and chest dimensions decrease based on the exhalation action. Based on the changes in the reduction of the abdominal dimensions collected by the abdominal detection unit, the physiological monitoring unit sends the physiological monitoring data generated in the above process to the display unit.

[0060] According to a preferred embodiment, when the abdominal posture changes, the abdominal detection unit can obtain the change of the abdominal dimension value through the pressure sensing change on the airbag or the binding belt, that is, the abdominal detection unit extracts the abdominal dimension value from the abdominal movement information in combination with the abdominal posture information.

[0061] According to a preferred embodiment, when the abdominal posture changes, the chest detection unit can obtain the change of the chest dimension value through the pressure sensing change on the airbag or the binding belt, that is, the chest detection unit extracts the chest dimension value from the chest movement information in combination with the chest posture information.

[0062] According to a preferred embodiment, when a patient wearing a gas detection unit begins to inhale, the gas detection unit detects the pressure value of the patient's exhaled gas in response to a dynamic trend in which a set of values ​​including chest dimension values ​​detected by the chest detection unit and abdominal dimension values ​​detected by the abdominal detection unit simultaneously increase in order to determine whether the patient is making correct abdominal breathing and exhalation preparations.

[0063] According to a preferred embodiment, the abdominal detection unit switches from a standby state to an operating state for collecting abdominal dimensional values ​​in response to the patient's action of wearing the gas detection unit, thereby ensuring that the operating state of the respiratory pressure detection device is not affected by the patient wearing the abdominal detection unit and being in a non-detection time. The information collection process may need to be repeated multiple times, and the abdominal detection unit and chest detection unit are not repeatedly worn during this process. Therefore, the system can distinguish between detection time and non-detection time based on whether the patient is wearing the gas detection unit.

[0064] When the gas pressure remains below the first threshold for a continuous period reaching a second threshold, the display unit, based on the abdomen and chest detection units returning to standby mode, prompts the patient to resume abdominal breathing preparation. Since Valsalva breathing requires abdominal breathing, the abdomen and chest detection units fail to detect an increase in the dimensional values ​​of the two components during Valsalva preparation. Therefore, the patient's breathing pattern is considered incorrect and the unit returns to standby mode. Furthermore, since the patient's exhalation time is limited, if the gas pressure remains below the first threshold for a period of time, it is recommended that the patient rest and resume Valsalva breathing to prevent hypoxia caused by continued exhalation. Therefore, in response to the gas pressure remaining below the first threshold for a continuous period reaching a second threshold, the abdomen and chest detection units return to standby mode. In response to the abdomen and chest detection units returning to standby mode, the display unit notifies the doctor and patient that the current collection process has failed and that they can restart at an appropriate time. Preferably, the first threshold is within the range of 2s to 10s.

[0065] According to a preferred embodiment, the abdominal detection unit includes an abdominal belt that surrounds the patient's abdomen and an abdominal belt displacement detector placed on the abdominal belt. When the abdomen of a patient who is in respiratory action bulges or tightens, the patient's abdominal dimension value is obtained by the displacement of the abdominal belt displacement detector provided on the patient's abdomen on the abdominal belt. The chest detection unit includes a chest belt that surrounds the patient's thorax and a chest belt displacement detector placed on the chest belt. When the chest of a patient who is in respiratory action bulges or tightens, the patient's chest dimension value is obtained by the displacement of the chest belt displacement detector provided on the patient's chest on the chest belt. The changing trend of the abdomen and chest is directly obtained through the displacement change. Since the detection of the abdomen and chest designed in the present invention does not require precise numerical values ​​but requires the knowledge of the changing trends of the abdomen and chest, an abdominal belt and chest belt that do not generate pressure will bring better comfort to the patient.

[0066] According to a preferred embodiment, the gas detection unit includes a pressure detection component that can detect the pressure of the patient's exhaled air by receiving gas from the patient's mouth and generate a corresponding pressure value. Specifically, the gas detection unit can include a gauge barometer, a mouthpiece, and a control valve. The patient can transmit gas to the gauge barometer through the mouthpiece, and the gauge barometer can detect the patient's exhaled air pressure. The control valve is used to adjust the operating state of the gas detection unit.

[0067] According to a preferred embodiment, the physiological monitoring unit is equipped with a pulsed Doppler to monitor the blood flow spectrum of the patient's tricuspid valve orifice when the patient is in tension. Preferably, the physiological monitoring unit can also perform imaging detection of blood flow in the foramen ovale or monitor microembolic signals in the cerebral arteries.

[0068] Based on the four modules involved in this system, the present invention relates to a Valsalva respiratory pressure detection method, which includes the following steps:

[0069] When a patient wearing a gas detection unit begins to perform chest compression movements in preparation for examining the physiological state of tissues in the body, the abdominal detection unit can collect the abdominal dimension value of the patient when performing abdominal breathing; the gas detection unit detects the pressure value of the patient's exhaled gas in response to the reduction of the abdominal dimension value collected by the abdominal detection unit; after the pressure value reaches a first threshold, the abdominal detection unit and the chest detection unit monitor the patient's abdominal dimension value and chest dimension value based on the patient's non-breathing state after exhalation; when the abdominal dimension value monitored by the abdominal detection unit and the chest dimension value monitored by the chest detection unit do not change dynamically, the physiological monitoring unit, in response to the pressure value reaching the first threshold, transmits the collected physiological phenomenon information of the patient in the tension period to the control module.

[0070] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation of the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The present invention specification contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", all of which indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as having to be set, so the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A Valsalva respiratory monitoring device comprising: A chest detection unit, configured to collect chest posture information including chest dimension values; an abdomen detection unit, which collects abdomen posture information including abdomen dimension values ​​based on the chest posture information of the chest detection unit to form a coordinated detection of abdominal breathing; The gas detection unit collects the pressure value of the patient's exhaled gas in response to the same change trend of the chest posture information provided by the chest detection unit and the abdominal posture information formed by the abdomen detection unit, characterized in that: Also includes a display unit, When the gas detection unit detects that the pressure value of the gas formed in the first exhalation action of the patient during a single Valsalva breath is lower than a first threshold and the continuous time for which the pressure value is lower than the first threshold reaches a second threshold, the abdomen detection unit and the chest detection unit return to the standby state and trigger the display unit to prompt the doctor and the patient to restart a single Valsalva breath.

2. The device according to claim 1, characterized in that After receiving the voice prompt, the patient inhales at the maximum capacity that he or she can reach. At this time, the abdomen detection unit detects the enlarged dimension value of the patient's abdomen based on the change in the patient's abdominal posture; When the patient continues to inhale, a voice prompt encouraging inhalation is given until the patient stops inhaling or the dimension value of the patient's abdomen no longer increases; at this time, the abdominal detection unit determines that the patient is using abdominal breathing and has made correct preparations.

3. The device according to claim 1 or 2, characterized in that The device also includes a physiological monitoring unit, When a patient in the tension period exhales based on the doctor's instructions and enters the release period, the physiological monitoring unit responds to the trend of simultaneous increase in the chest posture information provided by the chest detection unit and the abdominal posture information formed by the abdominal detection unit, and collects the same physiological indicator data of the patient as that of the patient in the tension period and sends it to the display unit that displays the physiological indicator data to the doctor.

4. The device according to any one of claims 1 to 3, characterized in that When a patient wearing the gas detection unit begins to perform chest compression movements in preparation for examining the physiological state of tissues in the body, the gas detection unit detects the pressure value of the patient's exhaled gas in response to a dynamic trend in which a set of values ​​including the chest dimension values ​​detected by the chest detection unit and the abdominal dimension values ​​detected by the abdominal detection unit simultaneously increase for the purpose of determining that the patient is making correct abdominal breathing and exhalation preparations.

5. The device according to any one of claims 1 to 4, characterized in that When the abdominal posture changes, the chest detection unit can obtain the change of the chest dimension value through the pressure sensing change on the airbag or the binding belt. The chest detection unit extracts the dimension value of the chest from the motion information of the chest in combination with the posture information of the chest.

6. The device according to any one of claims 1 to 5, characterized in that The abdominal detection unit includes an abdominal belt that surrounds the patient's abdomen and an abdominal belt displacement detector placed on the abdominal belt. When the patient's abdomen bulges or tightens during breathing, the patient's abdominal dimension value is obtained by the displacement of the abdominal belt displacement detector set on the patient's abdomen on the abdominal belt.

7. The device according to any one of claims 1 to 6, characterized in that The gas detection unit includes a pressure detection component, The pressure detection component can detect the gas pressure in the patient's mouth by receiving the gas in the patient's mouth and generate a corresponding pressure value.

8. The device according to any one of claims 1 to 6, characterized in that The gas detection unit includes a gauge barometer, a mouthpiece and a control valve; The patient can transmit gas through the mouthpiece to a gauge barometer, which can detect the patient's expiratory air pressure; The control valve is used to adjust the working state of the gas detection unit.

9. The device according to any one of claims 3 to 8, characterized in that The physiological monitoring unit is provided with a pulsed Doppler and monitors the blood flow spectrum of the patient's tricuspid valve orifice when the patient is in a tension phase.

10. A Valsalva respiration monitoring method, characterized in that: The method comprises: The chest detection unit collects chest posture information including chest dimension values; The abdomen detection unit collects the abdomen posture information including the abdomen dimension value based on the chest posture information of the chest detection unit to form a coordinated detection of abdominal breathing; In response to the chest posture information provided by the chest detection unit and the abdomen posture information formed by the abdomen detection unit having the same change trend, the gas detection unit collects the pressure value of the patient's exhaled gas, When the gas detection unit detects that the pressure value of the gas formed in the first exhalation action of the patient during a single Valsalva breath is lower than a first threshold and the continuous time for which the pressure value is lower than the first threshold reaches a second threshold, the abdomen detection unit and the chest detection unit return to the standby state and trigger the display unit to prompt the doctor and the patient to restart a single Valsalva breath.

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