Visual stomach tube used in cooperation with bronchofiberscope

Abstract

The invention discloses a visual stomach tube used in cooperation with a bronchofiberscope in the technical field of medical ultrasonic imaging. The visual stomach tube comprises a stomach tube body and the bronchofiberscope. The stomach tube comprises an inner port extending into a human body and an outer port used for being held by hand. An annular air bag is arranged on the inner wall of the inner port, an air pipe is arranged in the stomach tube, one end of the air pipe is communicated with the annular air bag, and the other end of the air pipe is communicated with an external air pump. A cross-shaped inlet is formed in the outer side wall, close to the inner port, of the stomach tube, and the end of the bronchofiberscope sequentially penetrates through the cross-shaped inlet and the inner ring of the annular air bag and partially extends out of the inner port. Only a small part of the observation end of the bronchofiberscope enters the stomach tube, the interaction force between the bronchofiberscope and the stomach tube can be reduced when the bronchofiberscope is drawn out, the bronchofiberscope is convenient to draw out, and meanwhile the inserted stomach tube is prevented from shifting. The stomach tube inserting efficiency is improved, and the discomfort of a patient in the stomach tube inserting process is weakened.

Description

Technical Field

[0001] This invention relates to the field of medical ultrasound imaging technology, and more specifically to a visualization gastric tube used in conjunction with a fiberoptic bronchoscope. Background Technology

[0002] A nasogastric tube is a medical device inserted through the nose or mouth to reach the stomach, primarily for feeding, medication administration, or gastrointestinal decompression. Some patients cannot cooperate with routine nasogastric tube placement under general anesthesia. Anesthesiologists or nurses often resort to repeated blind insertions to try and insert the tube into the stomach, a method that is not only inefficient but can also lead to placement failure or adverse events such as mucosal damage. A fiberoptic bronchoscope (or simply bronchoscope) is a flexible endoscope used for examining, diagnosing, and treating respiratory diseases. It consists of a bundle of optical fibers and a flexible endoscope. To improve the efficiency of nasogastric tube insertion, a fiberoptic bronchoscope can be used as a visual aid for the procedure.

[0003] The conventional method for matching a bronchoscope and gastroscope involves inserting the bronchoscope through one end of the gastric tube and exiting through the other. As the nurse inserts the gastric tube into the patient, the bronchoscope follows the tube. Once the tube reaches the designated position, the bronchoscope is withdrawn. However, in practice, because the bronchoscope is located inside the gastric tube, it easily scrapes against the inner wall of the tube during withdrawal, leading to difficulty in removal and even pulling the tube out with it, negatively impacting the insertion of the gastric tube. Summary of the Invention

[0004] The purpose of this invention is to disclose a visual gastric tube for use with a fiberoptic bronchoscope, which facilitates the removal of the fiberoptic bronchoscope after the gastric tube has reached the appropriate position, thereby reducing the adverse effects on the stability of the gastric tube.

[0005] To achieve the above objectives, the present invention discloses a visualization gastric tube for use with a fiberoptic bronchoscope, comprising: a gastric tube, the gastric tube including an inner port for insertion into the human body and an outer port for handheld use; the inner wall of the inner port is provided with an annular air bladder, the gastric tube is provided with a trachea, one end of the trachea is connected to the annular air bladder, and the other end is connected to an external air pump.

[0006] The bronchoscope has a cross-shaped inlet on the outer wall of the gastric tube near the inner port. The observation end of the bronchoscope passes through the cross-shaped inlet, the inner ring of the annular balloon, and partially extends out of the inner port.

[0007] As an optional implementation, the outer wall of the gastric tube is provided with multiple spring clips, which are evenly distributed around the circumference of the gastric tube. The outer wall of the gastric tube has grooves corresponding to the positions of the spring clips; the spring clips can be housed within the corresponding grooves. Each spring clip has an internal air cavity, one end of which is a free end, and the other end is fixedly connected to the gastric tube. The air cavity communicates with the trachea. When the air cavity is deflated, the free end of the spring clip tends to curve outwards radially along the gastric tube.

[0008] As an optional implementation, the inner wall of the gastric tube has an inner groove corresponding to the cross-shaped inlet, and a patch is disposed within the inner groove. The side of the patch away from the inner port is fixedly connected to the edge of the inner groove, while the other edges of the patch are separate from the inner groove. The patch tends to embed into the inner groove.

[0009] As an optional implementation, the sidewall of the trachea is fixedly connected to the inner wall of the gastric tube, and the trachea extends spirally along the length of the inner wall of the gastric tube.

[0010] As an optional implementation, the gastric tube contains multiple tracheae, which are evenly distributed circumferentially along the inner wall of the gastric tube. An air chamber is located at the outer port, and the end of each trachea furthest from the annular air bladder communicates with the air chamber, which is connected to the air pump.

[0011] As an optional implementation, the gastric tube has multiple side holes on its outer peripheral wall, which are evenly distributed along the outer peripheral wall of the gastric tube. The multiple side holes are spirally arranged on the outer peripheral wall of the gastric tube in a direction away from the inner port.

[0012] As an optional implementation, a buffer head is provided on the end face of the inner port, and the buffer head has a through hole along its axial direction for the observation end of the bronchoscope to pass through. The buffer head includes a head and a connecting part. The connecting part is fixedly connected to the inner port, one side of the head fits against the end face of the inner port and is fixedly connected to the connecting part, and the other side has an outer rounded corner.

[0013] As an optional implementation, one side of the connector is fixedly connected to the head, and the other side is close to the bronchoscope and has a chamfer at the edge of the through hole.

[0014] As an optional implementation, the annular airbag has multiple exhaust pipes on the circumferential side near the inner port. One end of each exhaust pipe is connected to the annular airbag, and the other end is provided with a valve that automatically opens when the rated air pressure is reached.

[0015] As an alternative implementation, the length direction of the exhaust pipe deviates from the axis of the gastric tube, and the end where the valve is located extends closer to the inner port. The diameter of the exhaust pipe gradually decreases along its length, with the smallest diameter at the end of the exhaust pipe where the valve is located.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The expansion or contraction of the ring-shaped airbag is controlled by an external air pump to achieve the effect of connecting or separating the bronchoscope and the gastric tube, which is convenient to operate; the ring-shaped airbag located inside the gastric tube will not affect the outer diameter of the gastric tube, making it easy to insert or remove the gastric tube from the human body.

[0017] (2) During the process of removing the bronchoscope, since only a small part of the bronchoscope is inside the gastric tube, the probability of friction between the bronchoscope and the gastric tube is reduced, preventing the friction between the bronchoscope and the gastric tube from affecting the stability of the gastric tube in the human body, making the process of removing the bronchoscope smoother.

[0018] (3) When fluid is introduced into the gastric tube, if the fluid flows out from a certain point on the side of the gastric tube, it will cause uneven radial force on the gastric tube and positional displacement. The cross-shaped inlet does not affect the process of the bronchoscope passing through the side wall of the gastric tube. After the bronchoscope is withdrawn from the gastric tube, the cross-shaped inlet closes automatically, ensuring the uniformity of the structure of the side wall of the gastric tube, which is conducive to maintaining the stability of the position of the gastric tube in the human body; it prevents the gastric tube from getting tangled with the bronchoscope during the withdrawal process, which is conducive to the smooth withdrawal of the bronchoscope.

[0019] (4) The part of the bronchoscope that extends into the inner port can be directly observed to observe the condition inside the human body. Medical staff can adjust the position of the gastric tube or perform other operations based on the real-time images provided by the bronchoscope, reducing the blindness of gastric tube insertion and the discomfort to the patient, and improving the efficiency of gastric tube insertion. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the gastric tube structure disclosed in an embodiment of the present invention; Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged view of point A in the image; Figure 3 This is an embodiment of the present invention. Figure 1 Enlarged view of point B in the image; Figure 4This is a cross-sectional schematic diagram of the inflated state of the spring sheet in an embodiment of the present invention; Figure 5 This is a cross-sectional schematic diagram of the spring sheet in the exhaust state according to an embodiment of the present invention; Figure 6 This is a cross-sectional schematic diagram of the inner port of the gastric tube according to an embodiment of the present invention; Figure 7 This is an embodiment of the present invention. Figure 6 Enlarged view of point C in the image; Figure 8 This is a cross-sectional schematic diagram of the external port of the gastric tube according to an embodiment of the present invention; Figure 9 This is a cross-sectional schematic diagram of the buffer head according to an embodiment of the present invention; Explanation of key figure labels: 1. Gastric tube; 11. Trachea; 12. Cross-shaped inlet; 121. Patch; 122. Inner groove; 13. Circular balloon; 131. Exhaust pipe; 132. Valve; 14. Spring; 141. Air chamber; 15. Side hole; 16. Bottom groove; 17. Inner port; 18. Outer port; 2. Inflation assembly; 21. Air chamber; 22. Tube; 23. Air pump; 3. Fiberoptic bronchoscope; 4. Buffer head; 41. Connector; 411. Chamfer; 42. Head; 421. Through hole. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] Furthermore, some of the aforementioned terms, besides indicating direction or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0025] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0026] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0027] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] Please see Figures 1 to 2 This application provides a visualization gastric tube for use with a fiberoptic bronchoscope, including a gastric tube 1 and a fiberoptic bronchoscope 3. The gastric tube 1 includes an inner port 17 that extends into the human body and an outer port 18 for handheld insertion. The function of the gastric tube 1 is to facilitate the introduction of fluids such as nutrient solutions and medications into the stomach by medical personnel. The fiberoptic bronchoscope 3, as a flexible endoscope, is used to observe the internal environment of the human body. The observation end of the fiberoptic bronchoscope 3 extends beyond the inner port 17, providing real-time images for medical personnel to insert the gastric tube 1, facilitating technical adjustments to the direction of the gastric tube 1, and ensuring that the gastric tube 1 reaches the designated position safely and quickly. With the assistance of the fiberoptic bronchoscope 3, the efficiency of inserting the gastric tube 1 is improved, and the discomfort caused to the patient by blindly inserting the gastric tube 1 is reduced.

[0029] Before inserting the gastric tube 1 into the human body, the fiberoptic bronchoscope 3 needs to be assembled onto the gastric tube 1. The inner wall of the inner port 17 is provided with an annular balloon 13 for holding the fiberoptic bronchoscope 3. The gastric tube 1 contains a trachea 11, one end of which is connected to the annular balloon 13, and the other end is connected to an external air pump 23. The annular balloon 13 located inside the gastric tube 1 does not increase the diameter of the gastric tube 1, facilitating its insertion and removal from the human body.

[0030] A cross-shaped inlet 12 is provided on the outer wall of the gastric tube 1 near the inner port 17. After the gastric tube 1 enters the stomach, gastric fluid may reflux into the gastric tube 1. If the fluid escapes from the side wall of the gastric tube 1, it will cause uneven radial force on the gastric tube 1. As a result, when the bronchoscope 3 is withdrawn, the gastric tube 1 and the bronchoscope 3 will become entangled, which is not conducive to the withdrawal of the bronchoscope 3 and will also affect the stability of the position of the gastric tube 1. The cross-shaped inlet 12 does not affect the passage of the bronchoscope 3 through the side wall of the gastric tube 1, and can automatically close after the bronchoscope 3 is withdrawn from the gastric tube 1, so as to maintain the uniformity of the side wall structure of the gastric tube 1 and prevent the gastric tube 1 from swinging due to backflow of gastric fluid.

[0031] The observation end of the bronchoscope 3 passes sequentially through the cross-shaped inlet 12, the annular balloon 13, and partially extends out of the inner port 17. The air pump 23 inflates the annular balloon 13, causing it to expand and adhere to the outer wall of the bronchoscope 3. Under air pressure, the annular balloon 13 applies radial pressure to the outer wall of the bronchoscope 3, thus achieving stable clamping and fixation of the end of the bronchoscope 3 by the gastric tube 1. After the endoscope reaches the designated position, the bronchoscope 3 needs to be withdrawn. The air pump 23 draws air from the air tube 131, reducing the air pressure inside the annular balloon 13. The annular balloon 13 contracts and loses its ability to clamp the bronchoscope 3. At this point, applying external force to the bronchoscope 3 allows it to be withdrawn. Because only a portion of the observation end of the bronchoscope 3 enters the gastric tube 1, there is less friction between the bronchoscope 3 and the gastric tube 1 during withdrawal, making it less likely that the gastric tube 1 will be pulled out of the body along with the bronchoscope 3, thus maintaining the stability of the gastric tube 1 after insertion. Medical staff can control the expansion and contraction of the annular balloon 13 by operating the air pump 23, thereby connecting or separating the bronchoscope 3 from the gastric tube 1, which is convenient to operate.

[0032] In some embodiments, the outer peripheral wall of the gastric tube 1 is provided with a plurality of side holes 15 on the side near the inner port 17, and the plurality of side holes 15 are evenly distributed along the outer peripheral wall of the gastric tube 1. The plurality of side holes 15 are spirally arranged on the outer peripheral wall of the gastric tube 1 in a direction away from the inner port 17, and the spiral arrangement allows for a greater number of side holes 15 per unit length of the gastric tube 1. When medical personnel deliver fluids such as nutrient solutions and medicines into the stomach through the gastric tube 1, the fluid can be discharged from the inner port 17 and the side holes 15. The larger number of side holes 15 can improve the efficiency of fluid discharge. Since the side holes 15 are distributed along the length of the gastric tube 1, they can provide a radiation area when the fluid is ejected, making it easier to disperse the fluid to various areas of the human stomach and facilitate the absorption of the fluid by the human body. When gastric reflux occurs, gastric juice enters the gastric tube 1 from the inner port 17 and can easily return to the stomach through the side holes 15. This can improve the effect of the gastric tube 1 in preventing gastric juice reflux.

[0033] See Figure 2 and Figure 9In some embodiments, a buffer head 4 is provided on the end face of the inner port 17. The buffer head 4 is generally made of a biocompatible elastic material such as medical silicone or hydrogel. This is to reduce friction and abrasion between the inner port 17 of the gastric tube 1 and the human body during insertion, thereby reducing discomfort to the patient. The buffer head 4 has a through hole 421 on its axial direction for the observation end of the bronchoscope 3 to pass through. The buffer head 4 includes a head 42 and a connecting part 41. The connecting part 41 is fixedly connected to the inner port 17 by a threaded connection or chemical adhesive. One side of the head 42 fits against the end face of the inner port 17 and is fixedly connected to the connecting part 41, while the other end has an outer rounded corner. The outer rounded corner can reduce friction between the buffer head 4 and human tissue, improving the smoothness of the gastric tube 1 entering the human body.

[0034] In some embodiments, one side of the connecting part 41 is fixedly connected to the head 42, and the other side is close to the bronchoscope 3 and has a chamfer 411 at the edge of the through hole 421. When the bronchoscope 3 passes through the through hole 421, guided by the chamfer 411, the bronchoscope 3 can be quickly aligned and pass through the through hole 421.

[0035] See Figures 3 to 5 In some embodiments, a plurality of spring pieces 14 are provided on the outer wall of the gastric tube 1. The spring pieces 14 are evenly distributed around the circumference of the gastric tube 1. The outer wall of the gastric tube 1 has a bottom groove 16 for accommodating the spring pieces 14 at the corresponding positions, and each spring piece 14 can be housed in the corresponding bottom groove. The interior of the spring piece 14 is hollow, forming an air cavity 141, which is connected to the trachea 11. When the air cavity 141 is in the degassing state, one end of the spring piece 14 tends to protrude radially outward from the bottom groove 16 along the gastric tube 1, while the other end is fixedly connected to the gastric tube 1.

[0036] During the insertion of the gastric tube 1, the air pump 23 inflates the trachea 11 to allow the annular balloon 13 to stably hold the bronchoscope 3. Simultaneously, the trachea 11 continuously inflates the air chamber 141. Under the pressure of the air, the spring 14 embeds into the bottom groove 16, maintaining a uniform diameter on the outer wall of the gastric tube 1, facilitating its insertion into the body. Once the gastric tube 1 reaches the designated position, to withdraw the bronchoscope 3, the air pump 23 expels the air from the exhaust pipe 131, and the annular balloon 13 contracts, causing the air in the air chamber 141 to flow back into the trachea 11. Due to its elastic recovery, one end of the spring 14 protrudes beyond the bottom groove 16, increasing the maximum radial dimension of the gastric tube 1 and increasing the interaction force between the gastric tube 1 and the body. This helps to fix the gastric tube 1 in place, preventing the friction between the bronchoscope 3 and the gastric tube 1 from pulling it out of its proper position when the bronchoscope 3 is withdrawn. When it is necessary to remove the gastric tube 1 from the human body, the air pump 23 can be used to inflate the spring 14 so that the spring 14 can be re-embedded in the bottom groove 16, and the medical staff can then smoothly remove the gastric tube 1 from the human body.

[0037] See Figure 6In some embodiments, the inner wall of the gastric tube 1 has an inner groove 122 corresponding to the cross-shaped inlet 12, and a patch 121 is provided within the inner groove 122. The side of the patch 121 away from the inner port 17 is fixedly connected to the edge of the inner groove 122, while the other edges of the patch 121 are separate from the inner groove 122. The patch 121 is made of an elastic and biocompatible material, and under the action of its own elastic recovery, the patch 121 tends to embed into the inner groove 122 when no external force is applied.

[0038] As the bronchoscope 3 passes through the outer wall of the gastric tube 1 and enters the interior of the gastric tube 1, the bronchoscope 3 contacts the patch 121. Guided by the patch 121, the bronchoscope 3 deflects towards the inner port 17, eliminating the need for additional manual guidance and improving the ease of installation. After the bronchoscope 3 is withdrawn from the gastric tube 1, the patch 121 automatically embeds into the inner groove 122, restoring the inner wall of the gastric tube 1 to a smooth state. The patch 121 enhances the sealing of the cross-shaped inlet 12, preventing the gastric tube 1 from being ejected from the cross-shaped inlet 12 when the fluid pressure is too high, and facilitating stable radial force distribution in the gastric tube 1 as the fluid flows through it.

[0039] See Figure 6 and Figure 8 In some embodiments, when a large amount of fluid passes through the gastric tube 1, the pressure of the fluid on both ends of the gastric tube 1 is uneven, which may cause the gastric tube 1 to "whiplash," resulting in patient discomfort, displacement, or even mucosal damage. The sidewall of the trachea 11 is fixedly connected to the inner wall of the gastric tube 1, and the trachea 11 extends spirally along the length of the inner wall of the gastric tube 1. The trachea 11 and the gastric tube 1 can be fixedly connected by chemical bonding or integral molding. The spiral pattern formed by the trachea 11 on the inner wall of the gastric tube 1 can reduce the flow velocity of the fluid when passing through the gastric tube 1, keep the overall force on the gastric tube 1 balanced, and reduce the "whiplash" phenomenon. The fluid inserted into the gastric tube 1 by medical staff is generally a mixture of nutrients or medicines. When the fluid passes through the gastric tube 1, under the action of the spiral pattern formed by the trachea 11, the fluid forms a vortex, which facilitates the mixing and agitation of the fluid during transportation, prevents the formation of deposits inside the gastric tube 1, and helps maintain the patency of the gastric tube 1.

[0040] The tube contains multiple tracheae 11, which are evenly distributed circumferentially along the inner wall of the gastric tube 1. An air chamber 21 is located at the outer port 18. The end of the trachea 11 furthest from the annular cuff 13 is connected to the air chamber 21, which is connected to the air pump 23 via a flexible tube 22. The multiple tracheae 11 improve ventilation efficiency and prevent ventilation failure caused by blockage of a single or multiple tracheae. The evenly distributed tracheae 11 facilitate uniform air pressure distribution, preventing excessive local inflation and deformation of the annular cuff 13, and maintaining the cuff's stable gripping ability on the fiberoptic bronchoscope 3.

[0041] See Figures 6 to 7In some embodiments, when the observation end of the bronchoscope 3 enters the human body, bodily fluids may contaminate the bronchoscope 3, making it difficult for the bronchoscope 3 to obtain clear images. The annular airbag 13 has multiple exhaust pipes 131 circumferentially arranged on the side near the inner port 17. One end of each exhaust pipe 131 is connected to the annular airbag 13, and the other end has a valve 132 that automatically opens upon reaching a rated air pressure. When it is necessary to clean the observation end of the bronchoscope 3, the air pressure inside the annular airbag 13 is increased by the air pump 23 to reach the air pressure value that causes the valve 132 to open. After the valve 132 opens, the ejected airflow sweeps and cleans the surface of the bronchoscope 3, allowing the bronchoscope 3 to obtain clear images. When it is not necessary to clean the bronchoscope 3, the valve 132 closes by restoring the normal air pressure input using the air pump 23.

[0042] In some embodiments, the length direction of the exhaust pipe 131 deviates from the axis of the gastric tube 1, and the end where the valve 132 is located extends towards the inner port 17. This facilitates the formation of a gas vortex towards the outside of the gastric tube 1 at the inner port 17, and the spiral airflow can enhance the cleaning effect of the exhaust pipe 131 on the fiberoptic bronchoscope 3. The diameter of the exhaust pipe 131 gradually decreases along its length direction, and the diameter is smallest at the end of the exhaust pipe 131 where the valve 132 is located. As the airflow flows from the annular balloon 13 to the valve 132, the diameter of the exhaust pipe 131 gradually decreases, which has a speed-increasing effect on the gas, increasing the gas velocity ejected from the valve 132, which is beneficial to improving the cleaning force of the fiberoptic bronchoscope 3.

[0043] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A visualization gastric tube for use with a fiberoptic bronchoscope, characterized in that, include: A gastric tube (1) includes an inner port (17) that extends into the human body and an outer port (18) for holding. The inner wall of the inner port (17) is provided with an annular air bladder (13). The gastric tube (1) is provided with a trachea (11) inside. One end of the trachea (11) is connected to the annular air bladder (13), and the other end is connected to an external air pump (23). The bronchoscope (3) has a cross-shaped inlet (12) on the outer wall of the gastric tube (1) near the inner port (17). The observation end of the bronchoscope (3) passes through the cross-shaped inlet (12) and the inner ring of the annular balloon (13) in sequence and extends partially out of the inner port (17).

2. The visualization gastric tube for use with a fiberoptic bronchoscope as described in any one of claims 1, characterized in that, The outer wall of the gastric tube (1) is provided with a plurality of spring pieces (14), which are evenly distributed around the circumference of the gastric tube (1). The outer wall of the gastric tube (1) is provided with a bottom groove (16) corresponding to the position of the spring piece (14). The spring piece (14) can be stored in the corresponding bottom groove (16). The inside of the spring piece (14) is provided with an air chamber (141). One end of the spring piece (14) is a free end, and the other end is fixedly connected to the gastric tube (1). The air chamber (141) is connected to the trachea (11). When the air chamber (141) is in the air-venting state, the free end of the spring piece (14) has a tendency to bend outward along the radial direction of the gastric tube (1).

3. The visualization gastric tube used in conjunction with a fiberoptic bronchoscope according to claim 1 or 2, characterized in that, The inner wall of the gastric tube (1) is provided with an inner groove (122) corresponding to the position of the cross-shaped inlet (12), and a patch (121) is provided in the inner groove (122); the side of the patch (121) away from the inner port (17) is fixedly connected to the edge of the inner groove (122), and the other edges of the patch (121) are separated from the inner groove (122); the patch (121) has a tendency to be embedded in the inner groove (122).

4. The visualization gastric tube for use with a fiberoptic bronchoscope according to any one of claims 1-3, characterized in that, The outer wall of the trachea (11) is fixedly connected to the inner wall of the stomach tube (1), and the trachea (11) extends spirally along the length of the inner wall of the stomach tube (1).

5. The visualization gastric tube for use with a fiberoptic bronchoscope as described in any one of claims 4, characterized in that, The stomach tube (1) is provided with multiple tracheas (11) inside, and the multiple tracheas (11) are evenly distributed along the circumferential direction of the inner peripheral wall of the stomach tube (1); the outer port (18) is provided with an air chamber (21), and the end of the trachea (11) away from the annular air bag (13) is connected to the air chamber (21), and the air chamber (21) is connected to the air pump (23).

6. The visualization gastric tube for use with a fiberoptic bronchoscope as described in claim 4, characterized in that, The gastric tube (1) has a plurality of side holes (15) on its outer peripheral wall, and the plurality of side holes (15) are evenly distributed in a ring along the outer peripheral wall of the gastric tube (1); the plurality of side holes (15) are spirally arranged on the outer peripheral wall of the gastric tube (1) in a direction away from the inner port (17).

7. The visualization gastric tube for use with a fiberoptic bronchoscope according to any one of claims 1-3, characterized in that, The inner port (17) has a buffer head (4) on its end face. The buffer head (4) has a through hole (421) on its axial direction for the observation end of the bronchoscope (3) to pass through. The buffer head (4) includes a head (42) and a connecting part (41). The connecting part (41) is fixedly connected to the inner port (17). One side of the head (42) is fitted with the end face of the inner port (17) and fixedly connected to the connecting part (41). The other side has an outer rounded corner.

8. The visualization gastric tube for use with a fiberoptic bronchoscope according to claim 7, characterized in that, One side of the connecting part (41) is fixedly connected to the head (42), and the other side is close to the bronchoscope (3) and has a chamfer (411) at the edge of the through hole (421).

9. The visualization gastric tube for use with a fiberoptic bronchoscope according to any one of claims 1-3, characterized in that the annular balloon (13) is provided with a plurality of exhaust pipes (131) in the circumferential direction on the side near the inner port (17), one end of the exhaust pipe (131) is connected to the annular balloon (13), and the other end is provided with a valve (132) that automatically opens when the rated air pressure is reached.

10. The visualization gastric tube for use with a fiberoptic bronchoscope according to claim 9, characterized in that, The length direction of the exhaust pipe (131) is deviated from the axis of the gastric tube (1), and the end where the valve (132) is located extends towards the inner port (17); the diameter of the exhaust pipe (131) gradually decreases along its length direction, and the diameter of the exhaust pipe (131) at the end where the valve (132) is located is the smallest.

Images