A convenient positioning type stomach tube based on stomach bag measurement

Abstract

The application belongs to the technical field of medical devices, and particularly relates to a convenient positioning type stomach tube based on stomach bag measurement, which comprises a catheter, a ballon, a one-way valve module and a bite module. The inside of the catheter is provided with an airway penetrating through the catheter. The inside of the catheter is fixedly provided with a plurality of developing lines. One end of the catheter is fixedly connected with an inner conical joint. The other end of the catheter is fixedly connected with a silica gel plug. The end of the catheter close to the silica gel plug is provided with a plurality of suction holes. The end of the catheter close to the inner conical joint is provided with a scale mark. The ballon can be inflated through the one-way valve module, so that the ballon is prevented from backflowing, thereby saving operation time and improving the convenience of positioning. In addition, the catheter can be automatically fixed in the oral cavity of a patient during the inflation of the ballon through the bite module, so that the shaking and twisting of the catheter is reduced, and the reliability of positioning is improved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a convenient positioning gastric tube based on gastric pouch measurement. Background Technology

[0002] A gastric tube is a medical device used to assist in gastric pouch surgery. During procedures such as sleeve gastrectomy, gastric bypass surgery, and partial sleeve gastrectomy, it is used to measure, calibrate, and adjust the size and position of the gastric pouch to ensure surgical outcomes. A convenient positioning gastric tube based on gastric pouch measurement typically consists of a tube body and a balloon. The end of the tube containing the balloon is inserted into the gastric pouch through the patient's mouth. The balloon inflates within the gastric pouch, increasing its volume and thus limiting the position of the tube body and the gastric pouch, thereby achieving positioning.

[0003] Existing convenient positioning gastric tubes based on gastric balloon measurement typically require the injection of saline solution into the balloon to inflate it after insertion. Because the fluid flows slowly along the thin tube, this method is time-consuming and lacks ease of positioning. Furthermore, the gastric tube is generally only positioned by the balloon's inflation; since the balloon is only located at one end, the other end cannot be properly secured, making the tube prone to shaking and twisting inside the patient's body. This can cause damage to the throat and esophagus, resulting in insufficient reliability of positioning. Summary of the Invention

[0004] The purpose of this invention is to provide a convenient positioning gastric tube based on gastric balloon measurement. It can inflate the balloon through a one-way valve module to avoid gas backflow, thereby saving operation time and improving the convenience of positioning. Furthermore, it can automatically fix the tube in the patient's mouth during balloon inflation through a bite module, reducing the possibility of tube shaking and twisting, and improving the reliability of positioning.

[0005] The specific technical solution adopted by this invention is as follows:

[0006] A convenient positioning gastric tube based on gastric pouch measurement, comprising:

[0007] The catheter has an air passage that runs through it, and multiple imaging lines are fixedly installed inside it. One end of the catheter is fixedly connected to an inner conical connector, and the other end of the catheter is fixedly connected to a silicone plug. The end of the catheter near the silicone plug has multiple suction holes, and the end of the catheter near the inner conical connector has scale markings.

[0008] A balloon, which is fixedly connected to one end of the catheter near the suction port, is connected to the airway and is used to fix the catheter in the gastric pouch;

[0009] A one-way valve module is fixedly connected to one end of the conical connector near the inner conical connector of the tubing. The one-way valve module is connected to the airway to prevent backflow of balloon gas.

[0010] The biting module is disposed between the balloon and the one-way valve module and is used to fix the catheter in the oral cavity;

[0011] In this process, after the balloon is inflated by the one-way valve module, the balloon expands and limits the catheter and the gastric pouch to fix the position of the catheter in the gastric pouch. The bite module, driven by the gas, limits the catheter and the oral cavity to fix the position of the catheter in the oral cavity.

[0012] As a preferred embodiment of the convenient positioning gastric tube based on gastric balloon measurement described in this invention, the balloon includes an expansion portion sleeved on the outside of the catheter, both ends of the expansion portion are fixedly connected to a fixing portion, the fixing portion is fixedly connected to the catheter, the inside of the catheter is provided with a first air hole, the first air hole is connected to the inner side of the fixing portion, and the first air hole is connected to the airway.

[0013] As a preferred embodiment of the convenient positioning gastric tube based on gastric pouch measurement described in this invention, wherein: the interior of the expansion portion is provided with a plurality of first expansion grooves along the axial direction of the conduit, the interior of the expansion portion is provided with a first air guide groove along the axial direction of the conduit, the first air guide groove is connected to a first air hole, and the first air guide groove is connected to a plurality of first expansion grooves.

[0014] As a preferred embodiment of the convenient positioning gastric tube based on gastric pouch measurement described in this invention, wherein: the interior of the expansion portion is provided with a plurality of second expansion grooves along the circumference of the catheter, the interior of the expansion portion is provided with a second air guide groove along the circumference of the catheter, the second air guide groove is connected to the first air hole, and the second air guide groove is connected to the plurality of second expansion grooves.

[0015] As a preferred embodiment of the convenient positioning gastric tube based on gastric pouch measurement described in this invention, the one-way valve module includes a trachea fixedly connected to the catheter, and a one-way valve is fixedly connected to the end of the trachea away from the catheter. The one-way valve is connected to the airway through the trachea.

[0016] As a preferred embodiment of the convenient positioning gastric tube based on gastric balloon measurement described in this invention, a second air hole is provided at the bottom of the trachea near the balloon, and the second air hole is connected to the airway.

[0017] As a preferred embodiment of the convenient positioning gastric tube based on gastric pouch measurement described in this invention, the biting module includes a sleeve fitted over the outside of the catheter. A baffle is fixedly connected to one end of the sleeve near the one-way valve module. A fixing rope is fixedly connected between the two ends of the baffle. Multiple limiting grooves are provided inside the sleeve. Multiple limiting holes are provided on the side of the catheter near the fixing rope. The spacing of the multiple limiting holes is adapted to the spacing of the multiple limiting grooves. The limiting holes are connected to the airway. A limiting component is provided inside the limiting holes.

[0018] As a preferred embodiment of the convenient positioning gastric tube based on gastric pouch measurement described in this invention, the limiting component includes a first elastic membrane, a second elastic membrane, and a limiting block. The first elastic membrane is fixedly connected to the top of the limiting hole, the second elastic membrane is fixedly connected to the bottom of the limiting hole, and the limiting block is movably disposed between the first elastic membrane and the second elastic membrane.

[0019] As a preferred embodiment of the convenient positioning gastric tube based on gastric balloon measurement described in this invention, wherein: a baffle is fixedly connected to the side of the sleeve near the balloon, and the diameter of the baffle is larger than the diameter of the sleeve.

[0020] As a preferred embodiment of the convenient positioning gastric tube based on gastric pouch measurement described in this invention, the tube is fitted with a stop plate on its outside, the stop plate has a stop hole inside, the upper end of the stop hole has a sliding part, the sliding part slides with the tube, and the lower end of the stop hole has a clamping part, the width of the clamping part is smaller than the width of the sliding part.

[0021] The technical effects achieved by this invention are as follows:

[0022] This invention employs a one-way valve module design, which facilitates balloon inflation and prevents gas backflow. When balloon inflation is required within the patient's gastric pouch, gas is introduced through the one-way valve. The gas travels through the trachea and airway to the interior of the balloon, continuously increasing the gas level between the inflation section and the catheter. This causes the balloon to inflate and increase in volume, thus fixing the catheter's position within the gastric pouch. This avoids the need for prolonged procedures that require injecting saline solution into the balloon, as is the traditional method. The one-way valve prevents gas from moving from the trachea to the outside, thus preventing balloon gas backflow, saving operation time and improving the ease of positioning.

[0023] This invention employs a bite-lock module design. This module automatically secures the catheter to the patient's mouth during balloon inflation. As the balloon inflates, gas passes through the airway and then through the limiting hole. Driven by the gas, the second elastic membrane pushes the limiting block upwards, causing the limiting block and the first elastic membrane to extend into the limiting groove, thus limiting the sleeve and catheter. Furthermore, because the sleeve is secured to the patient's mouth by a baffle, edge, and fixing rope, a limiting effect is created between the catheter and the mouth. This automatically secures the catheter to the patient's mouth during balloon inflation, reducing the risk of damage to the throat and esophagus caused by the catheter shaking or twisting inside the patient's body during positioning, thereby improving the reliability of positioning. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a partial exploded view of the inner conical joint and the conduit in this invention;

[0026] Figure 3 This is a partial exploded view of the silicone plug and balloon in this invention;

[0027] Figure 4 This is a partial cross-sectional view of the first expansion groove and the first air guide groove in this invention;

[0028] Figure 5 This is a partial cross-sectional view of the second expansion groove and the second air guide groove in this invention;

[0029] Figure 6 This is a schematic diagram of the one-way valve module in this invention;

[0030] Figure 7 This is a partial cross-sectional view of the second vent and air passage in this invention;

[0031] Figure 8 This is a partial cross-sectional view of the bite module in this invention;

[0032] Figure 9 This is a partial cross-sectional view of the limiting component in this invention;

[0033] Figure 10 This is a schematic diagram of the flow stop plate in this invention.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 10. Guide tube; 101. First air vent; 102. Limiting hole; 11. Airway; 12. Imaging line; 13. Inner conical connector; 14. Silicone plug; 15. Suction hole; 16. Scale markings;

[0036] 20. Balloon; 201. Inflatable part; 2011. First inflation groove; 2012. First air guide groove; 2013. Second inflation groove; 2014. Second air guide groove; 202. Fixing part;

[0037] 30. One-way valve module; 301. Air pipe; 3011. Second air port; 302. One-way valve;

[0038] 40. Sealing module; 401. Sleeve; 402. Baffle; 403. Fixing rope; 404. Limiting groove; 405. Limiting assembly; 4051. First elastic membrane; 4052. Second elastic membrane; 4053. Limiting block; 406. Edge guard;

[0039] 50. Flow stop plate; 51. Flow stop hole; 511. Sliding part; 512. Clamping part. Detailed Implementation

[0040] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0041] Example 1

[0042] like Figure 1-3 As shown, this is the first embodiment of the present invention. This embodiment provides a convenient positioning gastric tube based on gastric pouch measurement, including a catheter 10. An airway 11 is formed inside the catheter 10, and multiple radiopaque lines 12 are fixedly disposed inside the catheter 10. One end of the catheter 10 is fixedly connected to an inner conical connector 13, and the other end of the catheter 10 is fixedly connected to a silicone plug 14. Multiple suction holes 15 are formed at the end of the catheter 10 near the silicone plug 14, and a... Scale marking 16; Balloon 20, which is fixedly connected to one end of the catheter 10 near the suction port 15 and is connected to the airway 11, is used to fix the catheter 10 in the stomach pouch; One-way valve module 30, which is fixedly connected to one end of the catheter 10 near the inner conical connector 13 and is connected to the airway 11, is used to prevent gas backflow from the balloon 20; Biting module 40, which is disposed between the balloon 20 and the one-way valve module 30, is used to fix the catheter 10 in the oral cavity.

[0043] In use, during gastric pouch measurement, the biting module 40 is first fixed in the patient's mouth. Then, one end of the catheter 10 near the silicone plug 14 passes through the biting module 40 and extends into the patient's gastric pouch, causing the catheter 10 to move the balloon 20 to a suitable position in the gastric pouch. Gas is then introduced by the one-way valve module 30, and the gas moves through the airway 11 to the balloon 20, causing the balloon 20 to inflate and increase in volume. The balloon 20 adheres to the inner wall of the patient's gastric pouch, limiting the catheter 10 and the gastric pouch, thus fixing the catheter 10 in a suitable position in the gastric pouch, thereby achieving positioning in the gastric pouch. During this process, the gas in the airway 11 drives the biting module 40 to move, keeping the catheter 10 and the biting module 40 relatively fixed. Because the biting module 40 is relatively fixed to the mouth, the catheter 10 is fixed in a suitable position in the mouth, thereby achieving positioning in the mouth.

[0044] The one-way valve module 30 allows gas to pass through in only one direction, preventing gas backflow from the balloon 20. By inflating the balloon 20 through the one-way valve module 30, the traditional method of injecting saline into the balloon 20 avoids the need for prolonged operation, thus improving the convenience of the positioning process. By adjusting the amount of gas inflated through the one-way valve module 30, the size of the balloon 20 can be adjusted to accommodate different positions of irregularly shaped gastric pouches, improving the applicability of the positioning process. During the inflation of the balloon 20, the bite module 40, driven by the gas, fixes the catheter 10 in the patient's mouth, reducing the risk of the catheter 10 shaking or twisting inside the patient's body during positioning, which could damage the patient's throat and esophagus, thus improving the reliability of the positioning process.

[0045] Under X-ray imaging, the imaging line 12 shows the position and shape of the catheter 10 inside the human body, which is convenient for medical personnel to locate the catheter 10. The inner conical connector 13 and the silicone plug 14 block the airway 11 when connected to the catheter 10 to prevent gas leakage inside the airway 11. The inner conical connector 13 is used to connect the catheter 10 to other medical devices. The silicone plug 14 prevents gastric juice from entering the balloon 20 through the airway 11 to prevent the balloon 20 from being blocked during inflation. The suction port 15 connects the inside and outside of the catheter 10 to facilitate the extraction of gastric juice. The scale markings 16 are provided with multiple scale lines and numbers to facilitate marking the depth and position of the catheter 10 inserted into the patient's body, thereby facilitating the measurement of the size and position of the gastric balloon.

[0046] It should be noted that the material of catheter 10 is medical-grade silicone rubber, the color of catheter 10 is transparent, the radiopaque line 12 is distributed radially along catheter 10, the material of inner conical connector 13 is polycarbonate, and the material of silicone plug 14 is medical-grade silicone rubber.

[0047] Example 2

[0048] Reference Figure 1-10This is the second embodiment of the present invention, which is based on the previous embodiment.

[0049] like Figure 1 , Figure 2 and Figure 3 As shown, the balloon 20 includes an expansion portion 201 sleeved on the outside of the catheter 10. Both ends of the expansion portion 201 are fixedly connected to a fixing portion 202. The fixing portion 202 is fixedly connected to the catheter 10. A first air hole 101 is opened inside the catheter 10. The first air hole 101 is connected to the inner side of the fixing portion 202 and is connected to the airway 11.

[0050] It should be noted that the balloon 20 is made of medical-grade silicone rubber and is transparent in color.

[0051] According to the above structure, when the balloon 20 is inflated, the gas moves through the airway 11 and the first air hole 101 into the interior of the balloon 20, causing the gas between the expansion part 201 and the catheter 10 to increase continuously, and the space between the expansion part 201 and the outer wall of the catheter 10 to increase continuously, thereby causing the surface of the expansion part 201 to expand, and the balloon 20 to fit against the inner wall of the gastric pouch, thus limiting the catheter 10 and the gastric pouch.

[0052] like Figure 4 As shown, the expansion section 201 has a plurality of first expansion grooves 2011 formed inside the conduit 10 along the axial direction, and the expansion section 201 has a first air guide groove 2012 formed inside the conduit 10 along the axial direction. The first air guide groove 2012 is connected to the first air hole 101, and the first air guide groove 2012 is connected to the plurality of first expansion grooves 2011.

[0053] It should be noted that the first expansion groove 2011 is annular, and the first air guide groove 2012 is strip-shaped.

[0054] According to the above structure, the gas moves through the first vent 101 to the first gas guide groove 2012, and then moves along the first gas guide groove 2012 to the multiple first expansion grooves 2011, which facilitates the rapid diffusion of the gas between the expansion part 201 and the conduit 10, and reduces the obstruction of the gas movement caused by the inner wall of the expansion part 201.

[0055] like Figure 5 As shown, the expansion section 201 has a plurality of second expansion grooves 2013 circumferentially formed inside the conduit 10, and a second air guide groove 2014 circumferentially formed inside the expansion section 201. The second air guide groove 2014 is connected to the first air hole 101, and the second air guide groove 2014 is connected to the plurality of second expansion grooves 2013.

[0056] It should be noted that the second expansion groove 2013 is strip-shaped, and the second air guide groove 2014 is annular.

[0057] According to the above structure, the gas moves through the first vent 101 to the second gas guide groove 2014, and then moves along the second gas guide groove 2014 to the multiple second expansion grooves 2013, which facilitates the rapid diffusion of the gas between the expansion part 201 and the conduit 10, and reduces the obstruction of the gas movement caused by the inner wall of the expansion part 201.

[0058] like Figure 1 , Figure 6 and Figure 7 As shown, the one-way valve module 30 includes an air tube 301 fixedly connected to the conduit 10. A one-way valve 302 is fixedly connected to one end of the air tube 301 away from the conduit 10. The one-way valve 302 is connected to the airway 11 through the air tube 301.

[0059] It should be noted that the trachea 301 and the tubing 10 are connected only by the trachea 301 and the airway 11. There are no other gaps or cracks between the trachea 301 and the tubing 10 for gas-liquid exchange. The trachea 301 is inclined towards the side closer to the inner conical connector 13.

[0060] According to the above structure, the one-way valve 302 only allows gas to move from the outside to the air tube 301. When the balloon 20 pushes the gas to the one-way valve module 30 under the action of elasticity, the one-way valve 302 prevents the gas from moving from the air tube 301 to the outside, thereby preventing the balloon 20 from experiencing gas backflow.

[0061] like Figure 6 and Figure 7 As shown, a second air hole 3011 is provided at the bottom of the trachea 301 on the side near the balloon 20, and the second air hole 3011 is connected to the airway 11.

[0062] It should be noted that the diameter of the second vent 3011 is compatible with the diameter of the air passage 11.

[0063] According to the above structure, when the gas moves to the airway 11 through the trachea 301, since the second air hole 3011 is located on the side of the trachea 301 close to the balloon 20, it guides the gas to move towards the side close to the balloon 20, preventing the gas from moving away from the balloon 20, which facilitates the inflation of the balloon 20.

[0064] like Figure 1 , Figure 8 and Figure 9As shown, the bite module 40 includes a sleeve 401 fitted outside the conduit 10. A baffle 402 is fixedly connected to one end of the sleeve 401 near the one-way valve module 30. A fixing rope 403 is fixedly connected between the two ends of the baffle 402. Multiple limiting grooves 404 are opened inside the sleeve 401. Multiple limiting holes 102 are opened on the side of the conduit 10 near the fixing rope 403. The spacing of the multiple limiting holes 102 is adapted to the spacing of the multiple limiting grooves 404. The limiting holes 102 are connected to the air passage 11. A limiting component 405 is provided inside the limiting holes 102.

[0065] It should be noted that the size of the baffle 402 is larger than the distance between the patient's lips when the mouth is open.

[0066] According to the above structure, the sleeve 401 is placed into the patient's mouth, and the patient's upper and lower teeth bite down on the sleeve 401. The catheter 10 is inserted into the inside of the sleeve 401. The sleeve 401 prevents the patient's tongue and upper and lower teeth from interfering with the catheter 10, reducing the possibility of the catheter 10 shaking or twisting during positioning. The fixing rope 403 is fixed to the patient's head, and the baffle 402 fits against the patient's mouth to prevent the sleeve 401 from sliding into the depth of the patient's mouth, thereby fixing the sleeve 401 in the patient's mouth. When the balloon 20 is inflated, when the gas inside the airway 11 passes through the limiting hole 102, the gas drives the limiting component 405 to move. The limiting component 405 limits the sleeve 401 and the catheter 10 to keep the catheter 10 relatively fixed to the patient's mouth.

[0067] like Figure 9 As shown, the limiting component 405 includes a first elastic membrane 4051, a second elastic membrane 4052, and a limiting block 4053. The first elastic membrane 4051 is fixedly connected to the top of the limiting hole 102, the second elastic membrane 4052 is fixedly connected to the bottom of the limiting hole 102, and the limiting block 4053 is movably disposed between the first elastic membrane 4051 and the second elastic membrane 4052.

[0068] It should be noted that, in the initial state, the first elastic membrane 4051 does not protrude from the surface of the conduit 10, and the limiting block 4053 retracts into the interior of the limiting hole 102. The limiting block 4053 is spherical in shape.

[0069] According to the above structure, during the inflation of the balloon 20, when the gas inside the airway 11 passes through the limiting hole 102, the gas pushes the second elastic membrane 4052 upward, causing the second elastic membrane 4052 to deform upward and push up the limiting block 4053. The limiting block 4053 then moves the second elastic membrane 4052 upward and protrudes from the top of the limiting hole 102. The limiting block 4053 and the second elastic membrane 4052 extend into the limiting groove 404, limiting the sleeve 401 and the catheter 10, so that the catheter 10 and the sleeve 401 remain relatively fixed. Thus, during the inflation of the balloon 20, the biting module 40 fixes the catheter 10 in the patient's mouth under the action of the gas.

[0070] like Figure 1 and Figure 8 As shown, a retaining edge 406 is fixedly connected to the side of the sleeve 401 near the balloon 20, and the diameter of the retaining edge 406 is larger than the diameter of the sleeve 401.

[0071] It should be noted that the cross-sectional shape of the flange 406 is annular.

[0072] According to the above structure, when the patient's upper and lower teeth bite the sleeve 401, the guard 406 prevents the sleeve 401 from disengaging from the patient's upper and lower teeth, thereby improving the reliability of fixation during the positioning process.

[0073] like Figure 1 and Figure 10 As shown, a flow stop plate 50 is sleeved on the outside of the conduit 10. A flow stop hole 51 is opened inside the flow stop plate 50. A sliding part 511 is provided at the upper end of the flow stop hole 51. The sliding part 511 is slidably engaged with the conduit 10. A clamping part 512 is provided at the lower end of the flow stop hole 51. The width of the clamping part 512 is smaller than the width of the sliding part 511.

[0074] It should be noted that the material of the baffle plate 50 is polycarbonate.

[0075] According to the above structure, when it is necessary to stop the flow of the conduit 10, the conduit 10 is inserted into the interior of the stop plate 50 through the stop hole 51, so that the sliding part 511 slides to a suitable position on the conduit 10, and the conduit 10 is moved towards the clamping part 512. The clamping part 512 clamps the conduit 10, so that the conduit 10 deforms and the inner walls are attached to each other, thereby hindering the flow of gas and liquid inside the conduit 10. This makes it convenient to stop the flow of the conduit 10 directly by the relative sliding between the conduit 10 and the stop plate 50 during positioning, saving operation time and improving the convenience of the positioning process.

[0076] The working principle of this invention is as follows: During gastric pouch measurement, the bite module 40 is fixed in the patient's mouth, and the catheter 10 is inserted into the patient's body through the bite module 40, causing the balloon 20 to move into the gastric pouch. Gas is injected into the balloon 20 through the one-way valve module 30, causing the balloon 20 to expand and adhere to the inner wall of the patient's gastric pouch, thus limiting the position of the catheter 10 and the gastric pouch, thereby achieving positioning at the gastric pouch. The gas in the airway 11 drives the bite module 40 to move, keeping the catheter 10 and the bite module 40 relatively fixed. The catheter 10 is fixed in the mouth. The catheter 10 is positioned appropriately in the oral cavity to achieve positioning. During this process, the one-way valve module 30 prevents gas backflow from the balloon 20. By inflating the balloon 20, the traditional method of injecting saline into the balloon 20 is avoided, which requires a long operation time and improves the convenience of the positioning process. During the inflation of the balloon 20, the bite module 40 fixes the catheter 10 in the patient's oral cavity under the action of the gas, reducing the possibility of the catheter 10 shaking or twisting inside the patient's body during positioning and improving the reliability of the positioning process.

[0077] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A convenient positioning gastric tube based on gastric pouch measurement, characterized in that: include: The catheter (10) has an airway (11) that runs through it. Multiple imaging lines (12) are fixedly installed inside the catheter (10). One end of the catheter (10) is fixedly connected to an inner conical connector (13). The other end of the catheter (10) is fixedly connected to a silicone plug (14). Multiple suction holes (15) are provided at the end of the catheter (10) near the silicone plug (14). Scale markings (16) are provided at the end of the catheter (10) near the inner conical connector (13). A balloon (20) is fixedly connected to one end of a catheter (10) near the suction port (15). The balloon (20) is connected to the airway (11) and is used to fix the catheter (10) in the gastric pouch. One-way valve module (30), which is fixedly connected to one end of the conduit (10) near the inner conical connector (13), and is connected to the airway (11) to prevent gas backflow in the balloon (20); The bite module (40) is disposed between the balloon (20) and the one-way valve module (30) for fixing the catheter (10) in the oral cavity. In this process, after the balloon (20) is inflated by the one-way valve module (30), the balloon (20) expands and limits the catheter (10) and the gastric pouch to fix the position of the catheter (10) in the gastric pouch. The mouthpiece module (40) limits the catheter (10) and the oral cavity under the action of the gas to fix the position of the catheter (10) in the oral cavity. The bite module (40) includes a sleeve (401) fitted outside the conduit (10). A baffle (402) is fixedly connected to one end of the sleeve (401) near the one-way valve module (30). A fixing rope (403) is fixedly connected between the two ends of the baffle (402). Multiple limiting grooves (404) are opened inside the sleeve (401). Multiple limiting holes (102) are opened on one side of the conduit (10) near the fixing rope (403). The spacing of the multiple limiting holes (102) is adapted to the spacing of the multiple limiting grooves (404). The limiting holes (102) are connected to the airway (11). A limiting component (405) is provided inside the limiting holes (102). The limiting component (405) includes a first elastic membrane (4051), a second elastic membrane (4052), and a limiting block (4053). The first elastic membrane (4051) is fixedly connected to the top of the limiting hole (102), the second elastic membrane (4052) is fixedly connected to the bottom of the limiting hole (102), and the limiting block (4053) is movably disposed between the first elastic membrane (4051) and the second elastic membrane (4052).

2. The convenient positioning gastric tube based on gastric pouch measurement according to claim 1, characterized in that: The balloon (20) includes an expansion portion (201) sleeved on the outside of the catheter (10). Both ends of the expansion portion (201) are fixedly connected to a fixing portion (202). The fixing portion (202) is fixedly connected to the catheter (10). The inside of the catheter (10) is provided with a first air hole (101). The first air hole (101) is connected to the inside of the fixing portion (202). The first air hole (101) is connected to the airway (11).

3. The convenient positioning gastric tube based on gastric pouch measurement according to claim 2, characterized in that: The expansion section (201) has a plurality of first expansion grooves (2011) formed inside the conduit (10) along the axial direction. The expansion section (201) has a first air guide groove (2012) formed inside the conduit (10) along the axial direction. The first air guide groove (2012) is connected to the first air hole (101). The first air guide groove (2012) is connected to the plurality of first expansion grooves (2011).

4. The convenient positioning gastric tube based on gastric pouch measurement according to claim 2, characterized in that: The expansion section (201) has a plurality of second expansion grooves (2013) circumferentially formed inside the conduit (10), and a second air guide groove (2014) circumferentially formed inside the expansion section (201) along the conduit (10). The second air guide groove (2014) is connected to the first air hole (101), and the second air guide groove (2014) is connected to the plurality of second expansion grooves (2013).

5. The convenient positioning gastric tube based on gastric pouch measurement according to claim 1, characterized in that: The one-way valve module (30) includes a trachea (301) fixedly connected to the conduit (10), and a one-way valve (302) fixedly connected to one end of the trachea (301) away from the conduit (10). The one-way valve (302) is connected to the airway (11) through the trachea (301).

6. The convenient positioning gastric tube based on gastric pouch measurement according to claim 5, characterized in that: The bottom of the trachea (301) is provided with a second air hole (3011) on the side near the balloon (20), and the second air hole (3011) is connected to the airway (11).

7. The convenient positioning gastric tube based on gastric pouch measurement according to claim 1, characterized in that: A retaining edge (406) is fixedly connected to the side of the sleeve (401) near the balloon (20), and the diameter of the retaining edge (406) is larger than the diameter of the sleeve (401).

8. The convenient positioning gastric tube based on gastric pouch measurement according to claim 1, characterized in that: The conduit (10) is fitted with a stop plate (50), and the stop plate (50) has a stop hole (51) inside. The upper end of the stop hole (51) is provided with a sliding part (511), which slides with the conduit (10). The lower end of the stop hole (51) is provided with a clamping part (512), and the width of the clamping part (512) is smaller than the width of the sliding part (511).

Images