Three-cavity double-air-bag esophageal pressure monitoring catheter and monitoring method thereof

Abstract

The invention relates to the technical field of three-cavity double-airbag, in particular to a three-cavity double-airbag esophageal pressure monitoring catheter and a monitoring method.The three-cavity double-airbag esophageal pressure monitoring catheter comprises a stomach tube, an esophageal sac trachea is connected to one side of the interior of the stomach tube in a penetrating mode, a stomach sac inflation tube is connected to the other side of the interior of the stomach tube in a penetrating mode, and an inflation adjustment control mechanism is arranged in the esophageal sac trachea; a monitoring mechanism is fixedly connected to one side of the stomach tube, and a first esophageal sac, a second esophageal sac and a third esophageal sac are arranged on the outer side of one end of the stomach tube. Gas can be injected into the first esophageal sac, the second esophageal sac and the third esophageal sac correspondingly through the first gas filling pipe, the second gas filling pipe and the third gas filling pipe, so that the bleeding point in the esophagus is determined, meanwhile, gas stopping is conducted on the esophageal sacs at the bleeding point position through a gas stopping clamp, and bleeding of the bleeding point is stopped.

Description

Technical Field

[0001] The present invention relates to the technical field of three-cavity double-balloons, in particular to a three-cavity double-balloon esophageal pressure monitoring catheter and a monitoring method thereof. Background Art

[0002] The double-balloon three-lumen tube, also known as the three-lumen double-balloon tube, is mainly used clinically for gastrointestinal bleeding caused by esophageal-gastric varices. It can effectively stop bleeding and usually only needs to be deflated once every 8-12 hours.

[0003] Among them, the "visual double-balloon three-lumen tube" disclosed in publication number "CN108852447A" is also an increasingly mature technology. It "comprises: a three-lumen catheter having a main lumen located in the center and two sub-lumens located on the sides of the main lumen; an imaging element inserted in the main lumen of the three-lumen catheter, with a camera component and a lighting component provided at the front end thereof; a transparent cover sealingly arranged at the front end of the three-lumen catheter; an imaging element guide tube communicating with the main lumen of the three-lumen catheter and used for guiding the rear direction of the imaging element; an imaging element plug used for sealing the tail end opening of the imaging element guide tube; a liquid extraction and flushing tube communicating with the main lumen of the three-lumen catheter; two gas injection and exhaust tubes communicating with the two sub-lumens of the three-lumen catheter respectively; a gastric balloon sleeved on the three-lumen catheter and communicating with one of the two sub-lumens; and an esophageal balloon sleeved on the three-lumen catheter and communicating with the other of the two sub-lumens.

[0004] The monitoring catheter adopts a double-balloon design and a multi-lumen catheter structure to detect changes in internal pressure of the esophagus and gastric cavity. This type of detection cannot accurately locate the bleeding point inside the esophagus, reducing the medical staff's grasp of the specific location of hemostasis inside the esophagus. This will have an adverse effect on its clinical application effect and it is necessary to improve it. At the same time, negative pressure drainage treatment is performed inside the gastric cavity before detection, which affects the hemostasis pressure detection inside the gastric cavity. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a three-chamber double-balloon esophageal pressure monitoring catheter and a monitoring method thereof, which solve the problems raised in the background art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a three-chamber double-balloon esophageal pressure monitoring catheter, comprising a gastric tube, an esophageal balloon trachea inserted and connected to one side of the interior of the gastric tube, a gastric balloon inflation tube inserted and connected to the other side of the interior of the gastric tube, an inflation adjustment and control mechanism provided inside the esophageal balloon trachea, a monitoring mechanism fixedly connected to one side of the gastric tube, a first esophageal balloon, a second esophageal balloon and a third esophageal balloon provided on the outside of one end of the gastric tube, and a small pressure sensor provided on one side of the first esophageal balloon, the second esophageal balloon and the third esophageal balloon, a gastric balloon provided on the outside of one end of the gastric tube, and a detection mechanism provided inside the gastric tube.

[0007] The inflation adjustment and control mechanism includes a first inflation tube, a second inflation tube and a third inflation tube that are connected to the inside of the esophageal bag air tube. One end of the first inflation tube, the second inflation tube and the third inflation tube are correspondingly connected to the first esophageal bag, the second esophageal bag and the third esophageal bag. An air-stop clamp is provided on the outside of the port of the air inlet end of the first inflation tube, the second inflation tube and the third inflation tube.

[0008] The monitoring mechanism includes a connecting tube connected to the bottom of one end of the gastric tube, one end of the connecting tube is connected to a negative pressure drain, one side of the connecting tube is provided with a pressure detector, one side of the pressure detector is fixedly connected to an alarm, and the inner wall of the gastric tube is interspersed with a medical imaging line.

[0009] The detection mechanism includes a wire that is inserted and connected to the inside of the gastric tube, one end of the wire is installed with a pressure sensor, and one side of the pressure sensor is provided with a small camera.

[0010] One end of the gastric tube is connected to the interior of the gastric balloon.

[0011] The outside of the gastric tube is provided with scale lines, and the gastric tube, esophageal balloon trachea and gastric tube are all made of soft rubber material.

[0012] A fixing plate is fixedly connected to one side of the negative pressure drain device, and a wireless signal transmission module is fixedly connected to the top of the fixing plate.

[0013] A three-chamber double-balloon esophageal pressure monitoring method comprises the following steps:

[0014] Step 1: Use a syringe to completely remove the gas from the gastric balloon, the first esophageal balloon, the second esophageal balloon, and the third esophageal balloon. The surgeon clamps the first, second, and third inflation tubes and the gastric tube with a vascular clamp. Then, use a cotton swab dipped in liquid paraffin to lubricate one nostril. Insert the gastric balloon, the first, second, and third esophageal balloons through the lubricated nostril. When the insertion depth is about 12-15 cm, the medical assistant uses a tongue depressor to check the oral cavity and observe whether the three-chamber two-balloon tube is folded. When the tube is inserted to 65 cm, the assistant uses a 50 ml syringe to aspirate the gastric tube. When bloody gastric contents are seen, it indicates that the tube tip has reached the stomach.

[0015] Step 2: The medical assistant uses another 50ml syringe to inject 200ml of air into the gastric balloon inflation tube to inflate the gastric balloon. After the gas is injected, the tube mouth is clamped with a vascular clamp, and the medical assistant assists in measuring the pressure in the balloon with a sphygmomanometer. Usually, the gastric balloon pressure is recommended to be maintained at 40-50mmHg. Then, the gastric balloon inflation tube mouth is clamped with a hemostatic forceps to prevent gas leakage. The three-chamber two-balloon tube is pulled outward. When moderate resistance is felt, it indicates that the gastric balloon has been pressed against the bottom of the stomach. If the gastric balloon compression cannot effectively stop bleeding, the first esophageal balloon, the second esophageal balloon, and the third esophageal balloon are inflated. The medical assistant injects 100ml of air into the corresponding first esophageal balloon, the second esophageal balloon, and the third esophageal balloon. The operator clamps the tube mouth of the esophageal balloon that needs to be retained with a hemostatic forceps to prevent gas leakage.

[0016] Step three: No deflation is required for the first 24 hours, and then deflation is performed every 12 hours for 15-30 minutes to avoid mucosal erosion caused by prolonged compression. Before deflation, the patient should take 20 ml of paraffin oil orally. When deflation is performed, loosen the hemostatic forceps at the mouth of the gastric balloon inflation tube to allow it to deflate naturally and slowly. In addition, the gastric contents can be properly aspirated during deflation to understand whether there is any rebleeding. The three-chamber two-balloon tube is generally placed for 3-5 days. After the bleeding stops, the gastric balloon inflation tube is deflated and observed for 24 hours. The tube can be removed only after there is no bleeding. When removing the tube, the patient should take 20 ml of liquid paraffin orally first, and the assistant uses a syringe to drain the gas in the balloon, first releasing the gas in the esophageal balloon and then the gas in the gastric balloon. The operator then slowly removes the three-chamber two-balloon tube.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a three-chamber double-balloon esophageal pressure monitoring catheter and a monitoring method thereof:

[0019] 1. The first, second and third esophageal balloons can be used to inject gas into the corresponding first, second and third esophageal balloons to determine the bleeding point inside the esophagus. At the same time, the esophageal balloon at the bleeding point can be clamped to stop the gas and stop bleeding.

[0020] 2. When draining gastric juice, food residues, gas and other substances in the gastric cavity, the stomach is treated with negative pressure through the set negative pressure drainer. The liquid and gas in the stomach are extracted by the force of negative pressure, which can help doctors or nurses observe the situation in the stomach and determine whether there are bleeding, inflammation and other problems. At the same time, it also provides patients with gastrointestinal decompression effect, reduces gastrointestinal pressure and discomfort, and alarms are issued in case of excessive pressure through the set alarm. When taking X-ray photos of the patient through the set medical imaging line, the distance of the gastric tube extending into the stomach can be understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 This is one of the structural diagrams of the present invention;

[0023] Figure 3 Schematic diagram of the structure of the negative pressure drainage device of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the pressure detector of the present invention;

[0025] Figure 5 It is a partial structural diagram of A of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the gastric balloon inflation tube of the present invention;

[0027] Figure 7 It is a schematic structural diagram of the air stop clamp of the present invention.

[0028] In the figure: 1. Gastric tube; 101. Esophageal balloon trachea; 102. Gastric balloon inflation tube; 103. First esophageal balloon; 104. Second esophageal balloon; 105. Third esophageal balloon; 106. Gastric balloon; 2. Inflation adjustment and control mechanism; 201. First inflation tube; 202. Second inflation tube; 203. Third inflation tube; 204. Air stop clamp; 205. Gastric balloon inflation tube;

[0029] 3. Monitoring mechanism; 301. Connecting tube; 302. Negative pressure drain; 303. Pressure detector; 304. Warning device; 305. Medical radiograph;

[0030] 4. Detection mechanism; 401. Wire; 402. Pressure sensor; 403. Small camera; 5. Scale line; 6. Fixing plate; 601. Wireless signal transmission module. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0033] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] like Figure 1-Figure 7 As shown, the present invention proposes a three-chamber double-balloon esophageal pressure monitoring catheter, comprising a gastric tube 1, an esophageal balloon air tube 101 is inserted and connected to one side of the interior of the gastric tube 1, a gastric balloon inflation tube 102 is inserted and connected to the other side of the interior of the gastric tube 1, an inflation adjustment control mechanism 2 is provided inside the esophageal balloon air tube 101, a monitoring mechanism 3 is fixedly connected to one side of the gastric tube 1, a first esophageal balloon 103, a second esophageal balloon 104 and a third esophageal balloon 105 are provided on the outside of one end of the gastric tube 1, and a small pressure sensor is provided on one side of the first esophageal balloon 103, the second esophageal balloon 104 and the third esophageal balloon 105, a gastric balloon 106 is provided on the outside of one end of the gastric tube 1, and a detection mechanism 4 is provided inside the gastric tube 1.

[0036] In specific use, when performing pressure detection and hemostasis treatment of the esophagus and stomach, the set gastric tube 1 can be used to expand the gastric balloon 106 by injecting liquid or gas, thereby fixing the position of the gastric tube 1 in the stomach, which can not only prevent the gastric tube 1 from falling out or moving, but also ensure the accuracy of hemostasis pressure detection. At the same time, the compression effect of the gastric balloon 106 can also help stop bleeding, which is particularly important when dealing with gastrointestinal bleeding. It is used to inject liquids such as drugs, nutrient solutions, etc. into the gastric cavity. Doctors can directly administer drugs or provide nutritional support without oral administration or other methods. This is very useful for people who cannot eat or need special nutritional delivery. When bleeding occurs inside the gastric cavity, the gastric balloon 106 can compress the gastric fundus after being inflated through the gastric tube 1 to help stop bleeding. At the same time, it can also prevent food, liquid, etc. in the stomach from flowing back into the esophagus or mouth, reducing the patient's discomfort such as nausea and vomiting. According to the different hemostasis points inside the esophagus, the first esophageal balloon 103, the second esophageal balloon 104 and the third esophageal balloon 105 are used to perform trial inflation to find the hemostasis point, and the pressure of the esophagus is sensed by a small pressure sensor, and the esophagus is inflated and compressed to further ensure the stability of the gastric tube 1. At the same time, it can also prevent acidic substances in the stomach from flowing back into the esophagus, reducing the occurrence of diseases such as esophagitis and esophageal ulcers.

[0037] The inflation adjustment control mechanism 2 includes a first inflation tube 201, a second inflation tube 202 and a third inflation tube 203 which are connected to the inside of the esophageal bag air tube 101. One end of the first inflation tube 201, the second inflation tube 202 and the third inflation tube 203 are correspondingly connected to the first esophageal bag 103, the second esophageal bag 104 and the third esophageal bag 105. An air stop clamp 204 is provided on the outside of the port of the air inlet end of the first inflation tube 201, the second inflation tube 202 and the third inflation tube 203.

[0038] During specific use, the first inflation tube 201, the second inflation tube 202, and the third inflation tube 203 can be used to inject gas into the corresponding first esophageal balloon 103, the second esophageal balloon 104, and the third esophageal balloon 105, so as to determine the bleeding point inside the esophagus, and at the same time, the esophageal balloon at the bleeding point is stopped by the air stop clamp 204 to stop the bleeding.

[0039] The monitoring mechanism 3 includes a connecting tube 301 connected to the bottom of one end of the gastric tube 1, one end of the connecting tube 301 is connected to a negative pressure drain 302, a pressure detector 303 is provided on one side of the connecting tube 301, and an alarm 304 is fixedly connected to one side of the pressure detector 303. A medical imaging line 305 is inserted and connected to the inner wall of the gastric tube 1.

[0040] During specific use, when draining gastric juice, food residues, gas and other substances in the gastric cavity, the stomach is subjected to negative pressure treatment through the provided negative pressure drain 302. The liquid and gas in the stomach are extracted by the force of negative pressure, which can help doctors or nurses observe the situation in the stomach and determine whether there are problems such as bleeding and inflammation. At the same time, it also provides the patient with the effect of gastrointestinal decompression, reduces gastrointestinal pressure and discomfort, and uses the provided alarm 304 to sound an alarm in the event of excessive pressure. When taking an X-ray of the patient through the provided medical imaging line 305, the distance to which the gastric tube 1 extends into the stomach can be understood.

[0041] The detection mechanism 4 includes a wire 401 that is inserted into and connected to the inside of the gastric tube 1 . A pressure sensor 402 is installed at one end of the wire 401 , and a small camera 403 is provided on one side of the pressure sensor 402 .

[0042] During specific use, the pressure inside the gastric cavity is sensed and measured through the provided wire 401 and the pressure sensor 402, the detected data is transmitted through the wire 401, and the stomach is observed through the provided small camera 403. In actual work, the gastric tube 1 in the device is first inserted into the gastric cavity from the mouth, and then the external observation pressure detector 303 connected to the gastric tube 1 is observed to observe the pressure changes in the esophagus to avoid insufficient pressure or excessive pressure. When the pressure is insufficient, there is no sound, and when the pressure is too high, the alarm device 304 prompts an alarm sound.

[0043] One end of the gastric tube 1 is connected to the interior of the gastric balloon 106 .

[0044] The outside of the gastric tube 1 is provided with a scale line 5. The gastric tube 1, the esophageal balloon trachea 101 and the gastric tube 1 are all made of soft rubber material.

[0045] During specific use, the length of the gastric tube 1 inserted into the stomach is recorded using the provided scale lines 5 .

[0046] A fixing plate 6 is fixedly connected to one side of the negative pressure drain 302 , and a wireless signal transmission module 601 is fixedly connected to the top of the fixing plate 6 .

[0047] During specific use, the data of gastric pressure detection is transmitted to the computer terminal through the wireless signal transmission module 601.

[0048] A disinfection method for automatically replacing a drainage bag comprises the following steps:

[0049] Step 1: Use a syringe to completely remove all the gas from the gastric balloon 106, the first esophageal balloon 103, the second esophageal balloon 104, and the third esophageal balloon 105. The surgeon clamps the first inflation tube 201, the second inflation tube 202, the third inflation tube 203, and the gastric tube 1 with a vascular clamp. Then, a cotton swab dipped in liquid paraffin is used to lubricate one nostril. The gastric balloon 106, the first esophageal balloon 103, the second esophageal balloon 104, and the third esophageal balloon 105 are inserted through the lubricated nostril. When the insertion depth is about 12-15 cm, the medical assistant uses a tongue depressor to check the oral cavity to see if the three-chamber two-balloon tube is folded. When the tube is inserted to 65 cm, the assistant uses a 50 ml syringe to aspirate the gastric tube 1. The presence of bloody gastric contents indicates that the tube tip has reached the stomach.

[0050] Step 2: The medical assistant uses another 50ml syringe to inject 200ml of air into the gastric balloon inflation tube 205 to inflate the gastric balloon 106. After the gas is injected, the tube opening is clamped with a vascular clamp. The medical assistant helps measure the pressure in the balloon with a sphygmomanometer. Generally, the pressure of the gastric balloon 106 is recommended to be maintained at 40-50mmHg. The tube opening of the gastric balloon inflation tube 205 is then clamped with a hemostat to prevent gas leakage. The three-chamber two-balloon tube is pulled outward. When moderate resistance is felt, it indicates that the gastric balloon 106 has been pressed against the fundus of the stomach. If the compression of the gastric balloon 106 cannot effectively stop bleeding, the first esophageal balloon 103, the second esophageal balloon 104, and the third esophageal balloon 105 are inflated. The medical assistant injects 100ml of air into the corresponding first esophageal balloon 103, the second esophageal balloon 104, and the third esophageal balloon 105. The operator clamps the tube opening of the esophageal balloon that needs to be retained with a hemostat to prevent gas leakage.

[0051] Step three: No deflation is required for the first 24 hours, and then deflation is performed every 12 hours for 15-30 minutes to avoid mucosal erosion caused by prolonged compression. Before deflation, the patient should take 20 ml of paraffin oil orally. When deflation is performed, loosen the hemostatic forceps at the mouth of the gastric balloon inflation tube 205 to allow it to deflate naturally and slowly. In addition, the gastric contents can be properly aspirated during deflation to understand whether there is any rebleeding. The three-chamber two-balloon tube is generally placed for 3-5 days. After the bleeding stops, the gastric balloon inflation tube 205 is deflated and observed for 24 hours. The tube can be removed only after there is no bleeding. When removing the tube, the patient should take 20 ml of liquid paraffin orally first, and the assistant uses a syringe to drain the gas in the bag, first releasing the gas in the esophageal bag, and then releasing the gas in the gastric balloon 106. The operator then slowly removes the three-chamber two-balloon tube.

[0052] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0053] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A three-chamber double-balloon esophageal pressure monitoring catheter, comprising a gastric tube (1), characterized in that: An esophageal balloon air tube (101) is inserted and connected to one side of the interior of the gastric tube (1), and a gastric balloon inflation tube (102) is inserted and connected to the other side of the interior of the gastric tube (1). An inflation adjustment control mechanism (2) is provided inside the esophageal balloon air tube (101), and a monitoring mechanism (3) is fixedly connected to one side of the gastric tube (1). A first esophageal balloon (103), a second esophageal balloon (104) and a third esophageal balloon (105) are provided on the outside of one end of the gastric tube (1), and a small pressure sensor is provided on one side of the first esophageal balloon (103), the second esophageal balloon (104) and the third esophageal balloon (105). A gastric balloon (106) is provided on the outside of one end of the gastric tube (1), and a detection mechanism (4) is provided inside the gastric tube (1).

2. The three-chamber, double-balloon esophageal pressure monitoring catheter according to claim 1, characterized in that: The inflation adjustment control mechanism (2) comprises a first inflation tube (201), a second inflation tube (202) and a third inflation tube (203) which are connected to the inside of the esophageal balloon air tube (101); one end of the first inflation tube (201), the second inflation tube (202) and the third inflation tube (203) are connected to the first esophageal balloon (103), the second esophageal balloon (104) and the third esophageal balloon (105) respectively; and an air stop clamp (204) is provided on the outside of the air inlet end of the first inflation tube (201), the second inflation tube (202) and the third inflation tube (203).

3. The three-chamber, double-balloon esophageal pressure monitoring catheter according to claim 1, characterized in that: The monitoring mechanism (3) comprises a connecting tube (301) connected to the bottom of one end of the gastric tube (1), one end of the connecting tube (301) is connected to a negative pressure drain (302), a pressure detector (303) is provided on one side of the connecting tube (301), an alarm (304) is fixedly connected to one side of the pressure detector (303), and a medical radiograph (305) is inserted and connected to the inner wall of the gastric tube (1).

4. The three-lumen double-balloon esophageal pressure monitoring catheter according to claim 1, characterized in that: The detection mechanism (4) includes a wire (401) inserted into and connected to the inside of the gastric tube (1), a pressure sensor (402) is installed at one end of the wire (401), and a small camera (403) is provided on one side of the pressure sensor (402).

5. The three-lumen double-balloon esophageal pressure monitoring catheter according to claim 1, characterized in that: One end of the gastric tube (1) is connected to the interior of the gastric balloon (106).

6. The three-lumen double-balloon esophageal pressure monitoring catheter according to claim 1, characterized in that: The outside of the gastric tube (1) is provided with a scale line (5), and the gastric tube 1, the esophageal balloon trachea 101 and the gastric tube 1 are all made of soft rubber material.

7. The three-lumen double-balloon esophageal pressure monitoring catheter according to claim 3, characterized in that: A fixing plate (6) is fixedly connected to one side of the negative pressure drain (302), and a wireless signal transmission module (601) is fixedly connected to the top of the fixing plate (6).

8. A three-lumen double-balloon esophageal pressure monitoring method, comprising a three-lumen double-balloon esophageal pressure monitoring catheter according to claims 1-7, characterized in that: The steps include: Step 1: Use a syringe to completely drain the gas in the gastric balloon (106), the first esophageal balloon (103), the second esophageal balloon (104) and the third esophageal balloon (105). The operator clamps the first inflation tube (201), the second inflation tube (202) and the third inflation tube (203) and the gastric tube (1) with a vascular clamp. Then, a cotton swab dipped in liquid paraffin is used to lubricate one nostril. The gastric balloon (106), the first esophageal balloon (103), the second esophageal balloon (104) and the third esophageal balloon (105) are inserted from the lubricated nostril. When the insertion depth is about 12-15 cm, the medical assistant uses a tongue depressor to check the oral cavity and observe whether the three-chamber two-balloon tube is folded. When the tube is inserted to 65 cm, the assistant uses a 50 ml syringe to aspirate the gastric tube (1). When bloody gastric contents are seen, it indicates that the tube tip has reached the stomach. Step 2: The medical assistant uses another 50ml syringe to inject 200ml of air through the gastric balloon inflation tube (205) to inflate the gastric balloon (106). After the gas is insufflated, the tube opening is clamped with a vascular clamp, and the medical assistant assists in measuring the pressure inside the balloon with a sphygmomanometer. Generally, the pressure of the gastric balloon (106) is recommended to be maintained at 40-50 mmHg. Then, the tube opening of the gastric balloon inflation tube (205) is clamped with a hemostatic forceps to prevent gas leakage. The three-chamber two-balloon tube is pulled outward. When a moderate resistance is felt, it indicates that the gastric balloon (106) has been pressed against the bottom of the stomach. If the compression of the gastric balloon (106) cannot effectively stop bleeding, the first esophageal balloon (103), the second esophageal balloon (104), and the third esophageal balloon (105) are insufflated. The medical assistant injects 100 ml of air into the corresponding first esophageal balloon (103), the second esophageal balloon (104), and the third esophageal balloon (105). The operator clamps the tube opening of the esophageal balloon that needs to be retained with a hemostatic forceps to prevent gas leakage. Step 3: No deflation is required for the first 24 hours. Thereafter, deflation is performed for 15-30 minutes every 12 hours to avoid prolonged compression causing mucosal erosion. Before deflation, the patient first takes 20 ml of paraffin oil orally. When deflation is performed, the hemostatic forceps at the mouth of the gastric balloon inflation tube (205) are loosened to allow it to deflate naturally and slowly. In addition, during deflation, the gastric contents can be appropriately aspirated to understand whether there is any re-bleeding. The three-chamber two-balloon tube is generally placed for 3-5 days. After the bleeding stops, the gastric balloon inflation tube (205) is deflated and observed for 24 hours. The tube can be removed only after there is no bleeding. When removing the tube, the patient first takes 20 ml of liquid paraffin orally. The assistant uses a syringe to extract all the gas in the balloon, first releasing the gas in the esophageal balloon and then releasing the gas in the gastric balloon (106). The operator then slowly removes the three-chamber two-balloon tube.

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