Gastric tube for respiratory mechanics measuring device and respiratory mechanics measuring device

Abstract

The utility model relates to the field of medical apparatus and instruments provides a kind of gastric tube and respiratory mechanics determination device for respiratory mechanics determination device. Respiratory mechanics determination device gastric tube includes first tube body, for inserting in stomach;First pressure measuring sleeve, it is arranged in first tube body, and first pressure measuring sleeve is used to detect intragastric pressure;Second tube body, for inserting in esophagus;Second pressure measuring sleeve, it is arranged in second tube body, and second pressure measuring sleeve is used to detect esophageal pressure;Temperature sensing diaphragm, it is arranged in second tube body, and temperature sensing diaphragm is used to detect the temperature in esophagus. The respiratory mechanics determination device gastric tube realizes the synchronous monitoring of intragastric pressure, esophageal pressure and esophageal temperature, provides more comprehensive data support for critical illness and surgical anesthesia, realizes the multifunctional detection of gastric tube, improves the use convenience of gastric tube.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and provides a gastric tube for a respiratory mechanics measurement device and a respiratory mechanics measurement device. Background Technology

[0002] In the management of critical care and surgical anesthesia, physicians need to adjust the patient's respiratory parameters in a timely manner according to the patient's specific condition. These adjustments largely depend on the respiratory mechanics parameters displayed on the ventilator or anesthesia machine screen.

[0003] In practice, esophageal and gastric pressure monitoring is particularly important for individualized and precise protective lung ventilation management in anesthetized and critically ill respiratory patients. These pressure measurements can dynamically reflect the pathophysiological state of the patient's respiratory system in real time, guiding physicians to adjust respiratory parameters, optimize respiratory function, reduce the incidence of lung injury, and improve clinical outcomes.

[0004] However, there is currently a lack of consumables on the market that can simultaneously measure esophageal pressure, gastric pressure, and esophageal temperature. Utility Model Content

[0005] This utility model provides a gastric tube for a respiratory mechanics testing device, which enables multifunctional testing of the gastric tube and improves the ease of use of the gastric tube.

[0006] This utility model embodiment also provides a respiratory mechanics measuring device.

[0007] The first aspect of this utility model provides a gastric tube for respiratory mechanics measurement, comprising: The first tube is for insertion into the stomach; A first pressure-measuring sleeve is disposed on the first tube body, and the first pressure-measuring sleeve is used to detect intragastric pressure; The second tube is used for insertion into the esophagus; The second pressure-measuring sleeve is disposed in the second tube body and is used to detect esophageal pressure. A temperature sensing diaphragm is disposed in the second tube body, and the temperature sensing diaphragm is used to detect the temperature inside the esophagus.

[0008] According to one embodiment of the present invention, it further includes an air pump, which is in fluid communication with the first pressure measuring sleeve and the second pressure measuring sleeve through a ventilation pipeline.

[0009] According to one embodiment of the present invention, a T-junction is provided on the ventilation pipe.

[0010] According to one embodiment of the present invention, a gas flow sensor is also included, which is in fluid communication with the gas pump.

[0011] According to one embodiment of the present invention, it further includes a gastric tube body, and along the length direction of the gastric tube body, a first accommodating cavity, a second accommodating cavity and a third accommodating cavity are formed in the gastric tube body, which are isolated from each other. The first tube body passes through the first accommodating cavity, the second tube body passes through the second accommodating cavity, and the side wall of the third accommodating cavity is provided with an injection hole.

[0012] According to one embodiment of the present invention, at least one of the first accommodating cavity, the second accommodating cavity, and the third accommodating cavity is provided with a guide wire.

[0013] According to one embodiment of the present invention, at least one of the first accommodating cavity, the second accommodating cavity and the third accommodating cavity is provided with an acid-base sensing membrane.

[0014] According to one embodiment of the present invention, the pH sensing diaphragm includes a hydrogen ion sensitive field-effect transistor.

[0015] According to one embodiment of the present invention, it further includes a display, wherein the first pressure measuring sleeve, the temperature sensing diaphragm, and the display are electrically connected.

[0016] A second aspect of this utility model provides a respiratory mechanics measuring device, including a gastric tube for respiratory mechanics measuring devices as described above.

[0017] According to the first aspect of the present invention, the gastric tube for the respiratory mechanics measurement device accurately monitors the pressure and temperature in the stomach and esophagus during anesthesia, which is crucial for ensuring patient safety. The first pressure-measuring cuff can monitor gastric pressure in real time. When the gastric pressure is too high, it indicates a potential risk of reflux of gastric contents, allowing the anesthesiologist to take timely measures, such as adjusting the patient's position or using a gastrointestinal decompression device, to prevent aspiration of refluxed material into the airway and reduce the risk of lung infection and suffocation. The temperature-sensing diaphragm can monitor esophageal temperature, reflecting changes in the patient's body temperature and providing important information for temperature management during anesthesia. During general anesthesia, the patient's thermoregulation function is suppressed. By monitoring esophageal temperature, the anesthesiologist can adjust heating or cooling equipment in a timely manner to maintain stable body temperature and reduce complications caused by abnormal body temperature. During surgery, especially abdominal surgery, the pressure-sensing function of the gastric tube helps doctors understand the intra-abdominal pressure status. For example, during laparoscopic surgery, monitoring gastric pressure can provide real-time feedback on intra-abdominal pressure, providing a reference for anesthesia and respiratory management. Meanwhile, esophageal pressure monitoring can reflect changes in a patient's respiratory mechanics. For patients on mechanical ventilation, doctors can adjust the parameters of the respiratory mechanics monitoring device based on changes in esophageal pressure to improve respiratory mechanics and oxygenation. Temperature-sensing diaphragms can monitor a patient's body temperature in real time, allowing for timely detection of hypothermia or hyperthermia during prolonged surgeries, enabling appropriate measures to ensure stable physiological functions. In the intensive care unit (ICU), for patients using respiratory mechanics monitoring devices, the second manometry cuff can continuously monitor esophageal pressure, assisting doctors in accurately measuring pleural pressure. Temperature-sensing diaphragms can reflect real-time changes in a patient's body temperature; for critically ill patients with septic shock, multiple organ dysfunction syndrome, and other conditions, temperature monitoring is crucial for assessing disease progression and treatment effectiveness. Furthermore, data collected via gastric tubes can be correlated with parameters displayed on the ventilator, providing doctors with a more comprehensive basis for adjusting treatment plans and improving the success rate of treating critically ill patients.

[0018] According to the second aspect of the present invention, the respiratory mechanics measuring device, when used in conjunction with a gastric tube during anesthesia, provides safer and more precise respiratory support for patients. The respiratory mechanics measuring device adjusts the temperature and humidity of the gas according to esophageal temperature, improving patient comfort and reducing the occurrence of temperature-related complications. During surgery, especially prolonged major surgeries, the synergistic operation of the ventilator and gastric tube provides stable respiratory support. The pressure and temperature monitoring function of the gastric tube helps doctors understand the patient's gastrointestinal and respiratory status in a timely manner, improving the safety and success rate of surgery. In the intensive care unit (ICU), for patients using respiratory mechanics measuring devices for respiratory support, the combined use of the device and gastric tube provides more comprehensive monitoring and treatment. The pressure and temperature data from the gastric tube reflect the patient's gastrointestinal function and overall condition, improving treatment outcomes. Simultaneously, the data storage and transmission function of the respiratory mechanics measuring device facilitates the tracking and management of the patient's condition by medical staff, contributing to improved medical quality and patient prognosis. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic perspective view of the first tube and the second tube provided by this utility model.

[0021] Figure 2 This is a schematic side view of the first tube and the second tube provided by this utility model.

[0022] Figure 3 This is a schematic cross-sectional view of the gastric tube body provided by this utility model.

[0023] Figure label: 100. First tube body; 102. First pressure-measuring cuff; 104. Second tube body; 106. Temperature-sensing diaphragm; 108. Second pressure-measuring cuff; 110. Three-way stopcock; 112. Gastric tube body; 114. First receiving cavity; 116. Second receiving cavity; 118. Third receiving cavity; 120. Guide wire; 122. pH-sensing diaphragm. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] like Figures 1 to 3 As shown, a first aspect embodiment of this utility model provides a gastric tube for a respiratory mechanics testing device, comprising: The first tube 100 is used for insertion into the stomach; The first pressure measuring sleeve 102 is disposed in the first tube body 100 and is used to detect the intragastric pressure. The second tube 104 is used for insertion into the esophagus; The second pressure measuring sleeve 108 is disposed on the second tube body 104 and is used to detect esophageal pressure. A temperature sensing diaphragm 106 is disposed in the second tube 104 and is used to detect the temperature inside the esophagus.

[0026] According to the first aspect of the present invention, the gastric tube for the respiratory mechanics measurement device accurately monitors the pressure and temperature in the stomach and esophagus during anesthesia, which is crucial for ensuring patient safety. The first pressure-measuring cuff 102 can monitor the gastric pressure in real time. When the gastric pressure is too high, it indicates a potential risk of reflux of gastric contents. The anesthesiologist can then take timely measures, such as adjusting the patient's position or using a gastrointestinal decompression device, to prevent aspiration of refluxed material into the airway, reducing the risk of lung infection and suffocation. The temperature-sensing diaphragm 106 can monitor esophageal temperature, reflecting changes in the patient's body temperature and providing important information for temperature management during anesthesia. During general anesthesia, the patient's thermoregulation function is suppressed. By monitoring esophageal temperature, the anesthesiologist can adjust heating or cooling equipment in a timely manner to maintain stable body temperature and reduce complications caused by abnormal body temperature. During surgery, especially abdominal surgery, the pressure-sensing function of the gastric tube helps doctors understand the intra-abdominal pressure status. For example, during laparoscopic surgery, monitoring gastric pressure can provide real-time feedback on intra-abdominal pressure, providing a reference for anesthesia and respiratory management. Simultaneously, esophageal pressure monitoring can reflect changes in the patient's respiratory mechanics. For patients on mechanical ventilation, doctors can adjust the parameters of the respiratory mechanics measurement device based on changes in esophageal pressure to improve respiratory mechanics and oxygenation. The temperature-sensing diaphragm 106 can monitor the patient's body temperature in real time, allowing for timely detection of hypothermia or hyperthermia during prolonged surgery, enabling appropriate measures to ensure the stability of the patient's physiological functions. In the intensive care unit (ICU), for patients using respiratory mechanics measurement devices, the second pressure-sensing cuff 108 can continuously monitor esophageal pressure, assisting doctors in accurately measuring the patient's pleural cavity pressure. The temperature-sensing diaphragm 106 can reflect changes in the patient's body temperature in real time. For critically ill patients with septic shock, multiple organ dysfunction syndrome, and other conditions, temperature monitoring is crucial for assessing disease progression and treatment effectiveness. Furthermore, data collected via the gastric tube can be correlated with parameters displayed on the ventilator, providing doctors with a more comprehensive basis for adjusting treatment plans and improving the success rate of treating critically ill patients.

[0027] Please continue reading Figures 1 to 3 The first tube 100 is made of soft and biocompatible medical silicone material to ensure that damage to the patient's esophagus and stomach tissues is minimized during insertion into the stomach.

[0028] The first pressure measuring sleeve 102 is made of highly elastic and wear-resistant silicone material and is tightly attached to the first tube body 100 through a special heat sealing process to ensure good sealing at the connection and prevent gastric fluid leakage from affecting the accuracy of pressure detection.

[0029] The first set of capsules is designed with high-precision pressure sensing elements that work based on the principles of piezoresistive or capacitive effects, and can accurately convert the sensed changes in gastric pressure into electrical signals.

[0030] During the treatment of critically ill patients or surgical anesthesia, medical staff gently insert the first tube 100 into the stomach through the patient's mouth or nose, and the first pressure-measuring cuff 102 immediately begins real-time monitoring of gastric pressure. When the gastric pressure abnormally increases, such as during the anesthesia induction period when gas accumulates in the stomach due to gastrointestinal reactions, the pressure sensing element quickly detects the pressure change and transmits the signal to external monitoring equipment, alerting medical staff to take timely measures, such as adjusting the patient's position or performing gastrointestinal decompression, to prevent aspiration of gastric contents and reduce the risk of lung infection and suffocation.

[0031] The second tube, 104, is also made of high-quality medical-grade silicone, ensuring both flexibility and rigidity for easy insertion into the esophagus. Its outer diameter is meticulously designed to ensure a good fit to the esophagus without causing excessive discomfort to the patient.

[0032] The second pressure-measuring cuff 108 is made of similar materials and in similar manufacturing process to the first pressure-measuring cuff 102. It is installed on the second tube 104 and its position is precisely calculated to ensure accurate detection of esophageal pressure.

[0033] The temperature sensing diaphragm 106 is made of a thermistor or thermocouple that responds quickly and accurately to temperature changes and is integrated into a specific position of the second tube 104 through microfabrication technology.

[0034] During surgery, especially major surgeries involving the abdomen or chest, after the second tube 104 is inserted into the esophagus, the second pressure monitoring cuff 108 monitors the esophageal pressure in real time, providing important information for doctors to assess the patient's respiratory mechanics.

[0035] For example, when using mechanical ventilation to assist breathing, doctors can adjust the parameters of relevant equipment in a timely manner based on changes in esophageal pressure to optimize the patient's respiratory function. Simultaneously, the temperature-sensing diaphragm 106 continuously monitors esophageal temperature, reflecting changes in the patient's body temperature. During prolonged surgeries, patient body temperature is prone to fluctuations. By monitoring esophageal temperature, medical staff can promptly detect cases of hypothermia or hyperthermia, adjust heating or cooling equipment accordingly, maintain stable patient body temperature, reduce complications caused by abnormal body temperature, and ensure the safe conduct of the surgery.

[0036] According to one embodiment of the present invention, it also includes an air pump, which is in fluid communication with the first pressure measuring sleeve 102 and the second pressure measuring sleeve 108 through a ventilation pipeline.

[0037] In one embodiment of this invention, a high-precision, low-noise miniature air pump is used, whose working principle is based on piston movement or diaphragm vibration to generate airflow. The air pump is connected to the first pressure measuring cuff 102 and the second pressure measuring cuff 108 via a flexible and airtight ventilation tube. During connection, ensure that the tube interfaces are tight, and use sealant or gaskets to prevent gas leakage. The diameter of the ventilation tube is reasonably selected according to the flow rate and pressure output of the air pump to ensure smooth gas delivery. The air pump is powered by a rechargeable battery or an external power source and is equipped with a dedicated power management module that can adjust the operating voltage and current of the air pump, thereby controlling the output pressure and flow rate of the air pump to meet the inflation and deflation needs of the pressure measuring cuffs in different patients and testing scenarios.

[0038] In critical care and surgical anesthesia scenarios, the stable operation of the air pump ensures that the first and second pressure monitoring cuffs 108 maintain an appropriate pressure state, guaranteeing the accuracy of pressure monitoring. For example, during anesthesia induction, accurate intragastric and esophageal pressure data help anesthesiologists promptly assess the patient's respiratory mechanics. If the air pump is unstable, leading to abnormal pressure in the pressure monitoring cuffs, the monitoring data may be inaccurate, affecting the doctor's assessment of the patient's condition. Stable pressure monitoring also assists doctors in precisely adjusting the parameters of the respiratory mechanics monitoring device, avoiding over-ventilation or under-ventilation due to inaccurate pressure monitoring, reducing the risk of complications such as barotrauma, and ensuring the patient's respiratory safety during anesthesia and surgery.

[0039] According to one embodiment of the present invention, a tee 110 is provided on the ventilation pipe.

[0040] In one embodiment of this invention, the three-way valve 110 is an electromagnetic valve or a manual regulating valve, installed on the ventilation line near the pressure measuring cuff. For the electromagnetic valve, it is connected to a control unit via circuitry, enabling remote control and automated operation. The control unit sends a signal to the electromagnetic valve based on a preset program or detected pressure data, controlling the opening and closing of the three-way valve 110 to precisely regulate the gas flow and pressure entering the pressure measuring cuff. The manual regulating valve is designed with an easy-to-operate knob or handle, allowing medical personnel to manually adjust the opening of the three-way valve 110 as needed. The three-way valve 110 is made of corrosion-resistant and well-sealing materials, such as medical-grade silicone or stainless steel, ensuring long-term stable use in medical environments and preventing gas leakage from affecting pressure measurement accuracy.

[0041] In critical care and surgical anesthesia, the Three-Way 110 can precisely control the amount of gas entering the manometry cuff, thereby ensuring the accuracy of pressure monitoring. For example, during surgery, the patient's respiratory status and physical condition will constantly change, and the Three-Way 110 can quickly adjust the pressure of the manometry cuff according to actual needs. If the patient's abdominal pressure changes suddenly due to surgical procedures, the Three-Way 110 can promptly adjust the pressure of the gastric manometry cuff, allowing the first manometry cuff 102 to continuously and accurately monitor the gastric pressure. This provides doctors with reliable information to assess changes in respiratory mechanics and intra-abdominal pressure, helping them to adjust anesthesia and respiratory support strategies in a timely manner, ensuring the patient's safety and the smooth progress of the surgery.

[0042] According to one embodiment of the present invention, a gas flow sensor is also included, which is in fluid communication with the gas pump.

[0043] In one embodiment of this invention, a high-precision, fast-response thermal gas flow sensor or an ultrasonic gas flow sensor is selected. The gas flow sensor is installed on the ventilation pipe between the air pump and the pressure measuring sleeve, ensuring that the gas can completely flow through the sensor's detection area. The sensor measures flow rate using specific sensing principles; for example, a thermal sensor measures flow rate by utilizing the effect of gas flow on the heat dissipation of a heating element, while an ultrasonic sensor calculates flow rate by detecting the time difference of ultrasonic wave propagation in the gas. The sensor converts the detected gas flow signal into an electrical signal and transmits it to the control unit. The control unit processes and analyzes the signal, calculates real-time gas flow data according to a preset algorithm, and outputs it through a display screen or data interface.

[0044] In critical care and surgical anesthesia, gas flow sensors can monitor the gas flow rate entering the manometry cuff in real time, providing medical staff with more comprehensive monitoring data. For example, in the intensive care unit, when patients are receiving prolonged respiratory support using a respiratory mechanics monitoring device, monitoring gas flow allows medical staff to determine whether the gas pump is functioning properly and whether the inflation and deflation of the manometry cuff are smooth. Abnormal gas flow may indicate a blockage in the ventilation tubing or a gas pump malfunction, allowing medical staff to take timely corrective measures. This ensures the proper functioning of the gastric tube pressure monitoring system, providing reliable assurance for doctors to accurately assess the patient's respiratory mechanics and adjust treatment plans, thereby improving the success rate of treating critically ill patients.

[0045] According to one embodiment of the present invention, it further includes a gastric tube body 112. Along the length direction of the gastric tube body 112, a first accommodating cavity 114, a second accommodating cavity 116 and a third accommodating cavity 118 are formed in the gastric tube body 112, which are isolated from each other. A first tube body 100 passes through the first accommodating cavity 114, a second tube body 104 passes through the second accommodating cavity 116, and an injection hole is opened on the side wall of the third accommodating cavity 118.

[0046] In one embodiment of this utility model, the gastric tube body 112 is made of biocompatible materials such as medical-grade silicone or polyurethane, and manufactured through extrusion molding or injection molding. During the manufacturing process, a special mold is used to precisely control the size, shape, and position of the first receiving cavity 114, the second receiving cavity 116, and the third receiving cavity 118, ensuring mutual isolation and tight fit with the first tube body 100 and the second tube body 104. When the first tube body 100 and the second tube body 104 are inserted into their respective receiving cavities, they are fixed by interference fit or heat sealing to ensure the sealing between the tube body and the receiving cavity and prevent liquid or gas leakage. The injection holes on the side wall of the third receiving cavity 118 are processed by laser drilling or mechanical drilling. The diameter and number of injection holes are designed according to actual usage requirements to meet the injection requirements of nutrient solutions, drugs, etc.

[0047] In critical care and surgical anesthesia, this design of the gastric tube body 112 improves ease of use and functionality. During prolonged surgery or treatment of critically ill patients, the inlet port of the third commissural cavity 118 can be used to inject nutritional fluids to maintain the patient's nutritional supply or to administer medications for treatment, without the need for additional tubes, reducing patient discomfort and the risk of infection. Simultaneously, the isolated commissural cavities prevent interference between tubes, ensuring accurate monitoring of gastric pressure, esophageal pressure, and temperature, providing physicians with more reliable data, facilitating the development of more precise anesthesia and treatment plans, and promoting patient recovery.

[0048] According to one embodiment of the present invention, at least one of the first accommodating cavity 114, the second accommodating cavity 116 and the third accommodating cavity 118 is provided with a guide wire 120.

[0049] In one embodiment of this invention, the guidewire 120 is made of nickel-titanium alloy or stainless steel, which has good flexibility and support. Its surface undergoes a special coating treatment, such as a hydrophilic coating, to reduce friction between the guidewire 120 and the inner wall of the lumen, facilitating insertion and removal. The diameter of the guidewire 120 is selected according to the size of the receiving cavity to ensure free sliding within the cavity without affecting the normal function of the tube. When inserting the guidewire 120, medical personnel first insert one end of the guidewire 120 into the receiving cavity through a special insertion device, and then slowly advance it until it reaches the appropriate position. During use, the guidewire 120 can be removed or replaced as needed. Care should be taken when removing it to avoid damaging the tube and the inner wall of the receiving cavity.

[0050] In critical care and surgical anesthesia scenarios, the presence of guidewire 120 facilitates the insertion of gastric tubes. For patients who are unconscious or critically ill, inserting a gastric tube can be challenging. Guidewire 120 provides support, making it easier to insert the tube along the correct path into the stomach and esophagus, reducing tissue damage during insertion. For example, in emergency endotracheal intubation anesthesia, rapid and accurate insertion of the gastric tube is crucial to preventing reflux of gastric contents. Guidewire 120 can improve the success rate of gastric tube insertion, shorten operation time, reduce the risk of aspiration and airway obstruction, and ensure the smooth progress of anesthesia and surgery.

[0051] According to one embodiment of the present invention, at least one of the first accommodating cavity 114, the second accommodating cavity 116 and the third accommodating cavity 118 is provided with an acid-base sensing diaphragm 122; the acid-base sensing diaphragm 122 includes a hydrogen ion sensitive field-effect transistor.

[0052] In one embodiment of this invention, the pH sensing diaphragm 122 is a sensor based on the principle of a hydrogen ion-sensitive field-effect transistor, which is precisely installed on the inner wall of the accommodating cavity. During installation, it is essential to ensure that the sensing diaphragm is in full contact with the liquid within the accommodating cavity while avoiding mechanical damage. The sensing diaphragm is connected to a signal processing circuit via wires. The signal processing circuit amplifies, filters, and performs analog-to-digital conversion on the electrical signal generated by the sensing diaphragm, transmitting the processed digital signal to a microprocessor. The microprocessor converts the signal into a pH value according to a preset algorithm, which can then be output via a display screen or data interface.

[0053] In critical care and surgical anesthesia, the pH-sensing membrane 122 can monitor changes in the pH of the gastrointestinal tract in real time. For example, during surgery, a patient's gastrointestinal function may be affected by factors such as anesthetic drugs and surgical procedures. Abnormal changes in the pH of the gastrointestinal tract may indicate gastrointestinal dysfunction or acid-base imbalance. By monitoring pH, doctors can promptly identify these problems and take corresponding measures, such as adjusting drug treatment plans or providing gastrointestinal support, maintaining the patient's internal environment stability, reducing the occurrence of postoperative complications, and promoting postoperative recovery.

[0054] According to one embodiment of the present invention, it also includes a display, and the first pressure measuring sleeve 102 and the temperature sensing diaphragm 106 are electrically connected to the display.

[0055] In one embodiment of this invention, a high-resolution, high-contrast liquid crystal display or organic light-emitting diode display is selected to ensure that medical staff can clearly read the data under different lighting conditions. The display is connected to the signal processing module of the first pressure-measuring cuff 102 and the temperature-sensing diaphragm 106 via a data transmission cable, employing standard data transmission protocols such as SPI or I2C to ensure the accuracy and stability of data transmission. The display's interface is simple and intuitive, displaying data such as intragastric pressure and esophageal temperature in real time in the form of numbers, charts, or graphs. Simultaneously, the display also has functions such as brightness adjustment, data storage, and playback, facilitating medical staff to view historical data and conduct comparative analysis.

[0056] In critical care and surgical anesthesia, monitors allow medical staff to obtain data from gastric tube monitoring intuitively and promptly. For example, during anesthesia, anesthesiologists can observe changes in gastric pressure and esophageal temperature at any time without the need for additional equipment for data reading and analysis. When abnormal data occurs, doctors can react quickly; for instance, if gastric pressure is too high, measures can be taken promptly to prevent reflux and aspiration; if esophageal temperature is abnormal, the patient's temperature management strategy can be adjusted. This helps improve the safety of anesthesia and surgery, reduces medical risks caused by untimely data acquisition, and ensures patient safety.

[0057] A second aspect of this utility model provides a respiratory mechanics measuring device, including a gastric tube for respiratory mechanics measuring devices as described above.

[0058] According to the second aspect of the present invention, the respiratory mechanics measuring device, when used in conjunction with a gastric tube during anesthesia, provides safer and more precise respiratory support for patients. The respiratory mechanics measuring device adjusts the temperature and humidity of the gas according to esophageal temperature, improving patient comfort and reducing the occurrence of temperature-related complications. During surgery, especially prolonged major surgeries, the synergistic operation of the ventilator and gastric tube provides stable respiratory support. The pressure and temperature monitoring function of the gastric tube helps doctors understand the patient's gastrointestinal and respiratory status in a timely manner, improving the safety and success rate of surgery. In the intensive care unit (ICU), for patients using respiratory mechanics measuring devices for respiratory support, the combined use of the device and gastric tube provides more comprehensive monitoring and treatment. The pressure and temperature data from the gastric tube reflect the patient's gastrointestinal function and overall condition, improving treatment outcomes. Simultaneously, the data storage and transmission function of the respiratory mechanics measuring device facilitates the tracking and management of the patient's condition by medical staff, contributing to improved medical quality and patient prognosis.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gastric tube for a respiratory mechanics testing device, characterized in that, include: The first tube (100) is used for insertion into the stomach; A first pressure-measuring cuff (102) is disposed on the first tube body (100), and the first pressure-measuring cuff (102) is used to detect intragastric pressure; The second tube (104) is used for insertion into the esophagus; The second pressure measuring sleeve (108) is disposed in the second tube body and is used to detect esophageal pressure; A temperature sensing diaphragm (106) is disposed on the second tube (104) and the temperature sensing diaphragm (106) is used to detect the temperature inside the esophagus.

2. The gastric tube for the respiratory mechanics testing device according to claim 1, characterized in that, It also includes an air pump, which is in fluid communication with the first pressure measuring sleeve (102) and the second pressure measuring sleeve (108) through a ventilation pipeline.

3. The gastric tube for the respiratory mechanics testing device according to claim 2, characterized in that, A tee (110) is provided on the ventilation pipe.

4. The gastric tube for the respiratory mechanics testing device according to claim 2, characterized in that, It also includes a gas flow sensor, which is in fluid communication with the gas pump.

5. The gastric tube for the respiratory mechanics testing device according to any one of claims 1 to 4, characterized in that, It also includes a gastric tube body (112), and along the length direction of the gastric tube body (112), a first accommodating cavity (114), a second accommodating cavity (116) and a third accommodating cavity (118) are formed in the gastric tube body (112) and are isolated from each other. The first tube body (100) passes through the first accommodating cavity (114), the second tube body (104) passes through the second accommodating cavity (116), and the side wall of the third accommodating cavity (118) is provided with a flow hole.

6. The gastric tube for the respiratory mechanics testing device according to claim 5, characterized in that, At least one of the first accommodating cavity (114), the second accommodating cavity (116) and the third accommodating cavity (118) is provided with a guide wire (120).

7. The gastric tube for the respiratory mechanics testing device according to claim 5, characterized in that, At least one of the first accommodating cavity (114), the second accommodating cavity (116) and the third accommodating cavity (118) is provided with an acid-base sensing membrane (122).

8. The gastric tube for the respiratory mechanics testing device according to claim 7, characterized in that, The pH sensing diaphragm (122) includes a hydrogen ion sensitive field-effect transistor.

9. The gastric tube for the respiratory mechanics testing device according to any one of claims 1 to 4, characterized in that, It also includes a display, and the first pressure measuring sleeve (102) and the temperature sensing diaphragm (106) are electrically connected to the display.

10. A respiratory mechanics measuring device, characterized in that, Including a gastric tube for a respiratory mechanics measuring device as described in any one of claims 1 to 9.

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