Visual stomach tube and anti-reflux device comprising same

Abstract

A visible stomach tube and an anti-reflux device comprising the same belong to the technical field of stomach tubes, the visible stomach tube comprises a first stomach tube, the free end of the first stomach tube is inserted into the stomach of a human body, the free end of the first stomach tube is provided with a plurality of through holes, and the free end of the first stomach tube is provided with a 360-degree panoramic camera. The free end of the stomach tube is provided with a part in a panoramic shooting mode, so that the shooting range and angle are effectively expanded, the diseased region of the stomach is displayed in all directions, the problem that observation of a common camera is limited is solved, and more comprehensive and accurate information is provided for stomach tube lowering and pathological observation of the diseased region; and secondly, aiming at the reflux problem, a special anti-reflux part is arranged, so that nutrients or gastric juice reflux can be blocked when manual operation is stopped, gastric acid and the like are prevented from being sucked into the trachea and the lung to cause infection and stimulate esophageal mucosa, discomfort and psychological burden of a patient are relieved, and the one-way conveying performance of the stomach tube is protected.

Description

Technical Field

[0001] The invention belongs to the technical field of gastric tubes, and in particular relates to a visual gastric tube and an anti-reflux device comprising the gastric tube. Background Art

[0002] A gastric tube is a medical device that is mainly used for patients who cannot eat orally. It is inserted into the stomach through the nasal cavity or oral cavity to deliver nutrient solution, medicine, etc. to the stomach to ensure that the patient takes in enough nutrition and drug treatment. It can also extract gastric fluid, reduce gastric pressure, observe the condition of gastric fluid, and assist in the diagnosis and treatment of gastrointestinal diseases.

[0003] The related art (publication number CN221712897U) discloses a visualized gastric tube. A guide wire transmission line is arranged inside the gastric tube to support the gastric tube. In this way, when the gastric tube is inserted into the patient's body, it is easier to guide and insert, thereby reducing the patient's pain. By combining the transmission line with the guide wire, it not only supports the gastric tube, but also reduces the occupation of the internal space of the gastric tube, thereby ensuring smooth liquid infusion inside the gastric tube. When the gastric tube is not in use, the guide wire transmission line can be pulled out. By utilizing the characteristics of the gastric tube as a flexible tube, the gastric tube can be contracted to protect the patient's stomach wall and esophageal wall.

[0004] In the above scheme, the camera can be used to view the diseased part of the stomach when the gastric tube is lowered, but the range that can be photographed by an ordinary camera is limited, resulting in limited angles at which the diseased part of the stomach can be observed. It is impossible to show the diseased part of the stomach in an all-round and multi-angle manner, and the observation of the lowering of the gastric tube and the pathology of the diseased part is not comprehensive enough. Summary of the invention

[0005] In view of the fact that the range that ordinary cameras in the prior art can shoot is limited, resulting in the limited angle of the stomach diseased part that can be observed, and the inability to fully and multi-angle display of the stomach diseased part, and the incomplete observation of the lowering of the gastric tube and the pathology of the diseased part, the present invention provides a visual gastric tube and an anti-reflux device including the gastric tube, and a panoramic camera mode component is set at the free end of the gastric tube to effectively expand the shooting range and angle, fully display the stomach diseased part, overcome the limited observation problem of ordinary cameras, and provide more comprehensive and accurate information for the lowering of the gastric tube and the pathological observation of the diseased part. The specific technical scheme is as follows:

[0006] A visual gastric tube, comprising a first gastric tube, wherein the free end of the first gastric tube is an end inserted into a human stomach, the free end of the first gastric tube is provided with a plurality of through holes, a 360-degree panoramic camera is installed at the free end of the first gastric tube, the 360-degree panoramic camera is centrally arranged at the free end of the first gastric tube, and a portion of the 360-degree panoramic camera protruding from the first gastric tube accounts for two-thirds of the volume of the 360-degree panoramic camera itself, and a diameter of the 360-degree panoramic camera is 1 to 1.5 times the diameter of the first gastric tube;

[0007] Wherein, the length of the first gastric tube is set to be 40 cm to 75 cm.

[0008] The present invention also provides an anti-reflux device including a visual gastric tube, comprising the visual gastric tube, an anti-reflux unit is provided at one end of the first gastric tube away from the 360-degree panoramic camera, and a second gastric tube is connected to the side of the anti-reflux unit away from the first gastric tube;

[0009] The anti-backflow unit includes a first shell and a second shell, a sealed cavity is provided at the bottom end of the first shell, a first connecting port and a second connecting port are respectively provided on the left and right sides of the sealed cavity at the bottom end of the first shell, the sealed cavity at the bottom end of the first shell is symmetrically provided with two first horizontal portions and arc-shaped recessed portions, the arc-shaped recessed portions are recessed downward, a second horizontal portion is provided between the two arc-shaped recessed portions, and the first horizontal portion and the second horizontal portion are both provided in a horizontal direction, an anti-backflow plate is slidably provided on the upper surface of the second horizontal portion, a movable plate is connected to the top end of the anti-backflow plate, two first magnet blocks are symmetrically installed on the left and right side walls of the movable plate, and displacement components are provided on the left and right sides of the movable plate.

[0010] In the above technical solution, the displacement assembly includes two first mounting blocks symmetrically mounted on the upper surface of the first housing, one end of a first spring is mounted on the side wall of each first mounting block, a first moving block is mounted on the other end of the first spring, a second magnet block is mounted on a side of each first moving block close to the first magnet block, and the two second magnet blocks correspond to the positions of the two first magnet blocks respectively;

[0011] Wherein, the magnetic poles of the first magnet block and the second magnet block on the opposite side are the same.

[0012] In the above technical solution, the displacement assembly further comprises two second mounting blocks fixedly mounted on the upper surface of the first housing, a first limiting rod is mounted between the two second mounting blocks, and a second moving block is slidably sleeved on the first limiting rod;

[0013] Wherein, each of the first moving blocks is slidably sleeved on the first limiting rod.

[0014] In the above technical solution, the top end of the anti-backflow plate is connected to a movable plate through a first sealing unit;

[0015] The first sealing unit comprises a first sealing plate, which is horizontally mounted above the sealing cavity at the bottom end of the first shell, a blind groove is provided in the middle of the first sealing plate, and the bottom end of the blind groove is a thin plate, a first permanent magnet is mounted at the bottom end of the movable plate, a first permanent magnet is mounted at the top end of the anti-backflow plate, a second permanent magnet is connected to the bottom end of the movable plate, the second permanent magnet corresponds to the first permanent magnet up and down and is magnetically attracted to each other, a second limiting rod is parallelly mounted above the first sealing plate, both ends of the second limiting rod are respectively connected to the side walls of the first shell, and the movable plate is slidably sleeved on the second limiting rod;

[0016] Wherein, the bottom end of the first permanent magnet is connected to the top end of the anti-backflow plate.

[0017] Optionally, the top end of the anti-backflow plate is connected to a movable plate via a second sealing unit;

[0018] The second sealing unit comprises a second sealing plate, which is installed above the sealing cavity at the bottom end of the first shell in the horizontal direction, and the upper surface of the second sealing plate is symmetrically provided with two arc grooves, which are recessed downwards, and a sunken portion is provided between the two arc grooves, and a through groove is provided through the sunken portion in the vertical direction, and a sliding block is slidably embedded in the inner cavity of the through groove, and a cylinder is installed on the top of the sliding block, and the cylinder is slidably fitted along the upper surfaces of the two arc grooves, and a third limiting rod is installed in parallel above the second sealing plate, and the two ends of the third limiting rod are respectively connected to the side walls of the first shell, and the cylinder is slidably sleeved on the third limiting rod;

[0019] Wherein, the sliding block is connected to the top of the anti-backflow plate, the bottom end of the cylinder is connected to the top of the sliding block, and the top end of the cylinder is connected to the moving plate.

[0020] In the above technical solution, a locking unit is arranged outside the first shell and the second shell, and the locking unit includes two sets of locking mechanisms, and the two sets of locking mechanisms are arranged symmetrically on the left and right;

[0021] Each group of the locking mechanisms comprises a fixing seat fixedly mounted on the front side wall of the second shell, the outer side wall of the fixing seat is provided with a slot, an insert block is slidably embedded in the inner cavity of the slot, the insert block penetrates a through cavity from top to bottom, one end of a strap is installed at the bottom end of the insert block, the other end of the strap is inserted into the inner cavity of the through cavity from top to bottom, a plurality of fixing blocks are equidistantly arranged at one end of the strap inserted into the inner cavity of the through cavity, a moving rod is obliquely penetrated by the outer side wall of the insert block, the moving rod is inserted into the through cavity and embedded with a limiting block, the limiting block is embedded in the gap formed by two adjacent fixing blocks, a second spring is sleeved on the moving rod, and the two ends of the second spring are respectively connected to the moving rod and the side wall of the insert block;

[0022] Among them, the opposite sides of the fixing block and the limiting block are both set as inclined end faces, the inclined end face of the fixing block is set to be inclined downward in the direction close to the side wall of the strap, and the inclined end face of the limiting block is set to be inclined upward in the direction away from the strap.

[0023] In the above technical solution, the shape of the slot is set to be a dovetail shape, and the opening of the slot is set on the front side of the fixing seat.

[0024] In the above technical solution, a connecting unit is provided between the two plug-in blocks;

[0025] The connecting unit includes a first connecting column and a second connecting column, a first hollow cylinder is installed at one end of the first connecting column close to the second connecting column, a second hollow cylinder is slidably inserted into the inner cavity of the first hollow cylinder, and the second hollow cylinder is fixedly connected to the second connecting column, a third spring is sleeved on the first hollow cylinder and the second hollow cylinder, and both ends of the third spring are respectively connected to the first connecting column and the second connecting column.

[0026] In the above technical solution, the first shell and the second shell are detachably connected via a docking assembly;

[0027] The docking assembly includes a groove opened along the circumference of the first shell side wall, and also includes a convex strip installed on the circumference of the second shell side wall. The convex strip corresponds to the position of the groove and is adapted in size. The convex strip is embedded in the inner cavity of the groove.

[0028] Compared with the prior art, the visual gastric tube and the anti-reflux device including the gastric tube of the present invention have the following beneficial effects:

[0029] First, the range that ordinary cameras can shoot is limited, resulting in limited angles of the stomach diseased parts that can be observed, and the lesions of the stomach cannot be displayed in all directions and at multiple angles. For the problem that the lowering of the gastric tube and the observation of the pathology of the diseased parts are not comprehensive enough, the present invention is provided with a 360-degree panoramic camera at the free end of the first gastric tube. The 360-degree panoramic camera adopts a panoramic camera mode, which can more comprehensively shoot the situation of the diseased parts in the stomach, expand the shooting range and shooting angle, and display the lesions of the stomach in all directions and at multiple angles;

[0030] Second, the existing gastric tube lacks the function of preventing reflux. When the delivery of nutrients or the extraction of gastric fluid is stopped suddenly, the nutrients or fluid in the gastric tube will reflux. The reflux can easily cause gastric acid, food residues and other substances to be inhaled into the trachea and lungs to cause infection. It can also cause the esophageal mucosa to be repeatedly stimulated by gastric acid, causing uncomfortable symptoms such as heartburn and chest pain, increasing the discomfort and psychological burden of patients. In view of the above problems, the present invention is provided with an anti-reflux unit, which can block the nutrients or gastric fluid flowing in the first gastric tube and the second gastric tube when the delivery of nutrients or the extraction of gastric fluid is stopped, prevent reflux, protect the unidirectional delivery of the patient's gastric tube when in use, and further avoid the infection risk caused by reflux and unnecessary psychological burden on patients.

[0031] 3. In the present invention, when nutrients are transported from the second gastric tube to the first gastric tube, the anti-reflux plate can be driven to automatically move to the left to open the channel for transporting nutrients, and the anti-reflux plate can be automatically reset to the center when no manual operation is performed, and the anti-reflux function can be automatically realized; when gastric juice is extracted from the first gastric tube to the second gastric tube, the anti-reflux plate can be driven to automatically move to the right to open the channel for extracting gastric liquid, and the anti-reflux plate can still be automatically reset to the center when no manual operation is performed, and the anti-reflux function can be automatically realized; the present invention cleverly meets the anti-reflux requirements in two directions from the second gastric tube to the first gastric tube and from the first gastric tube to the second gastric tube through the single anti-reflux plate component, and realizes the multifunctional reuse effect of the anti-reflux plate component. Compared with the traditional mode of configuring anti-reflux devices for two channels respectively, the present invention reduces the space volume occupied by the entire device, shows significant advantages in space utilization, and enhances the convenience and practicality of application in medical care environments;

[0032] Fourth, in the present invention, a movable plate, a first magnet block, a first movable block and a second magnet block are provided. By utilizing the principle that like magnets attract and opposite magnets repel, in combination with components such as a first spring, the movable plate can drive the first movable block in the corresponding direction to compress the first spring in the corresponding position when the movable plate moves, and when the operation is manually stopped, the elastic force of the first spring and the repulsive force between the second magnet block and the first magnet block are utilized to form a coordinated reset power system, so that the movable plate drives the anti-reflux plate to accurately return to the center position, that is, in the present invention, the centering reset operation of the movable plate and the anti-reflux plate can be realized automatically without manual intervention, thereby effectively achieving the anti-reflux function, and improving the automation degree and ease of use of the device, reducing the complexity of manual operation and the potential risk of misoperation, and providing a more reliable guarantee for the use of anti-reflux gastric tubes;

[0033] 5. In the present invention, two modes, namely, the first sealing unit and the second sealing unit, are provided, which can be used as needed. Either mode can ensure that the anti-backflow plate is always moved in a sealed environment, and can effectively eliminate the interference of external factors on the movement process of the anti-backflow plate, thereby ensuring that when manually operated, the anti-backflow plate can be accurately and accurately caused to move stably in the expected direction, i.e., to the left or to the right, to realize the opening and use of the channel in the corresponding direction;

[0034] 6. The present invention is provided with a first permanent magnet, a thin plate, a second permanent magnet and a first sealing plate, which can promote the second permanent magnet and the first permanent magnet to move synchronously through the thin plate, thereby ensuring the synchronization of the movement of the anti-backflow plate and the moving plate while ensuring the sealing of the space below the first sealing plate;

[0035] 7. The present invention is provided with components such as a sliding block, a cylinder, a through groove, and an arc groove, so that when the sliding block, the cylinder, the movable plate, and the anti-backflow plate move synchronously, the cylinder will never leave the arc groove, thereby ensuring that the space below the second sealing plate always remains in a sealed state, thereby ensuring the synchronization of the movement of the anti-backflow plate and the movable plate;

[0036] 8. In the present invention, the first shell, the groove, the second shell, and the convex strip are provided, which can promote the sealed docking of the first shell and the second shell, and ensure that the moving plate always moves in the sealed space, thereby ensuring the sealing of the channel and the normal realization of the anti-backflow function;

[0037] 9. The present invention is provided with a locking unit, which can further connect and lock the first shell and the second shell, increase the tightness between the first shell and the second shell, and further ensure the sealing of the closed space in the anti-backflow unit;

[0038] 10. In the present invention, through the cooperation of the fixing block, the limiting block and the binding belt and other components, when the fixing block moves downward along the inner cavity of the through cavity, based on the linkage of various components, the limiting block can be automatically triggered to produce a displacement change to the outside, and once the fixing block stops moving, the limiting block will automatically and accurately embed into the position between two adjacent fixing blocks, thereby achieving an effective limiting effect on the fixing block; that is, the present invention directly realizes the automatic locking function of the binding belt in the inner cavity of the through cavity, and the entire operation process does not need to perform additional complex positioning steps, which greatly simplifies the operation process, and the positioning of the binding belt becomes efficient, convenient and accurate, which significantly improves the convenience and practicality in practical applications;

[0039] 11. In the present invention, a slot and an insert block are provided to ensure a tight connection between the insert block and the fixing seat, and to ensure a tight positioning of the first shell and the second shell by the binding belt. After positioning, the first shell and the second shell will not be separated in the front-to-back direction, and the engagement and limiting of the groove and the convex strip can prevent the first shell and the second shell from being separated in the left-right and up-down directions, that is, the all-round locking and limiting between the first shell and the second shell can be achieved after positioning;

[0040] 12. The present invention is provided with a connecting unit, which can elastically connect the left and right groups of plug-ins, ensuring that the left and right groups of plug-ins and the binding strap form a connected whole, which is more stable than a single binding strap and is more stable for locking between the first shell and the second shell;

[0041] 13. In the present application, by providing the first hollow cylinder, the second hollow cylinder, and the third spring, the distance between the two groups of plug-ins can be moved away or closer, and the two plug-ins in the mutually distant state can be more easily aligned with the inner cavities of the slots at corresponding positions, and the elastic force of the third spring can be used to automatically insert the two groups of plug-ins into the inner cavities of the slots at corresponding positions, so that the plug-ins are automatically inserted into the slots for connection and assembly;

[0042] In summary, firstly, in terms of gastric observation, a panoramic camera mode component is set at the free end of the gastric tube to effectively expand the shooting range and angle, fully display the gastric lesion site, overcome the limited observation problem of ordinary cameras, and provide more comprehensive and accurate information for the lowering of the gastric tube and pathological observation of the patient; secondly, in response to the reflux problem, a special anti-reflux component is set to block the reflux of nutrients or gastric juice when the manual operation is stopped, avoid the infection caused by the inhalation of gastric acid and other substances into the trachea and lungs and the stimulation of the esophageal mucosa, reduce the patient's discomfort and psychological burden, and protect the unidirectional delivery of the gastric tube; thirdly, the anti-reflux structure is cleverly designed, and two-way anti-reflux is achieved through a single component, which reduces the space occupied by the device and enhances the convenience of application in the medical environment; and the magnet principle is used in conjunction with related components to realize automated living The device can be reset in the middle, which improves the automation level and ease of use of the device and reduces the risk of misoperation. In addition, a variety of methods are adopted to ensure the precise movement of key components in a sealed environment, the coordination of multiple components to achieve synchronous movement and ensure sealing, and the coordination of various components to achieve sealing docking and connection locking settings, further ensuring the normal realization of channel sealing and anti-reflux functions. In addition, the strap can be automatically locked after being inserted into the lumen, and the entire operation process does not require additional complex positioning steps, which greatly simplifies the operation process and significantly improves the convenience and practicality in actual applications. The connection stability of components and the convenience of assembly are improved, and the setting of the connection unit prompts the left and right sets of plug-ins and straps to form a connected whole, which is more stable than a single strap setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic structural diagram of the first gastric tube in Example 1 of the present invention;

[0044] Figure 2 This is a schematic structural diagram of the second housing of Embodiment 1 of the present invention;

[0045] Figure 3 This is a schematic diagram of the structure of the groove of Example 1 of the present invention;

[0046] Figure 4 This is a schematic diagram of the structure of the convex strips of Example 1 of the present invention;

[0047] Figure 5 This is a schematic structural diagram of the first sealing plate of Example 1 of the present invention;

[0048] Figure 6 Schematic diagram of the cross-sectional structure of the first sealing plate of Example 1 of the present invention

[0049] Figure 7 This is a schematic diagram of the top view of the structure of the first moving block of Example 1 of the present invention;

[0050] Figure 8 This is a schematic structural diagram of the second magnet block in Example 1 of the present invention;

[0051] Fig. 9 This is a schematic diagram of the structure of a fixed block according to Embodiment 1 of the present invention;

[0052] Fig.10 This is a schematic structural diagram of the first connecting column of Example 1 of the present invention;

[0053] Fig.11 This is a schematic structural diagram of a fixing base according to Embodiment 1 of the present invention;

[0054] Fig.12 This is a schematic diagram of the structure of the plug-in block of Embodiment 1 of the present invention;

[0055] Fig.13 This is a schematic diagram of the structure of a cylinder in Example 2 of the present invention;

[0056] Fig.14 This is a schematic diagram of the structure of the arc groove in Example 2 of the present invention;

[0057] Figures 1 to 14 , 1. first gastric tube, 2. 360-degree panoramic camera, 3. anti-reflux unit, 3001. first shell, 3002. groove, 3003. second shell, 3004. convex strip, 3005. first communication port, 3006. second communication port, 3007. first horizontal portion, 3008. arc-shaped recessed portion, 3009. second horizontal portion, 3010. anti-reflux plate, 3011. moving plate, 3012. first magnet block, 3013. first mounting block, 3014. first spring, 3015. first moving block, 3016. second mounting block, 3017. first limiting rod, 3018. second magnet block, 3019. second moving block, 4. second gastric tube, 5. first sealing unit, 5001. first sealing plate, 5002. blind groove, 5003, thin plate, 5004, first permanent magnet, 5005, second permanent magnet, 5006, second limiting rod, 6, second sealing unit, 6001, second sealing plate, 6002, arc groove, 6003, sunken part, 6004, through groove, 6005, sliding block, 6006, cylinder, 6007, third limiting rod, 7, locking unit, 7001, fixing seat, 7002, slot, 7003, plug-in block, 7004, through cavity, 7005, binding band, 7006, fixing block, 7007, moving rod, 7008, second spring, 7009, limiting block, 8, connecting unit, 8001, first connecting column, 8002, second connecting column, 8003, first hollow cylinder, 8004, second hollow cylinder, 8005, third spring. DETAILED DESCRIPTION

[0058] The following is a combination of specific implementation cases and attached Figures 1 to 14 The present invention is further described below, but the present invention is not limited to these embodiments.

[0059] Example 1

[0060] See also Figures 1 to 12 As shown, a visual gastric tube comprises a first gastric tube 1, wherein the free end of the first gastric tube 1 is an end inserted into the human stomach. Figure 1 As shown, the left end of the first gastric tube 1 is an end inserted into the human stomach, and a plurality of through holes are provided at the free end of the first gastric tube 1, so that nutrients can flow out of the first gastric tube 1 to the outside or the liquid in the stomach can be drawn into the first gastric tube 1. A 360-degree panoramic camera 2 is installed at the free end of the first gastric tube 1. The 360-degree panoramic camera 2 adopts a commonly used miniature 360-degree panoramic camera on the market, which can meet the requirements of being smoothly inserted into the stomach through the nasal cavity or the oral cavity, and can meet the display function of the imaging of the 360-degree panoramic camera 2 controlled by an external controller, and its model is not further described here. The 360-degree panoramic camera 2 is centrally arranged at the free end of the first gastric tube 1. The centrally arranged 360-degree panoramic camera 2 can cooperate with the first gastric tube 1 to enter the human stomach in an upright position, so as to avoid the 360-degree panoramic camera 2 being tilted to one side relative to the first gastric tube 1, which causes the 360-degree panoramic camera 2 to scratch the nasal cavity, oral cavity or stomach during the lowering process. The portion of the 360-degree panoramic camera 2 protruding from the first gastric tube 1 accounts for two-thirds of the volume of the 360-degree panoramic camera 2 itself. The 360-degree panoramic camera 2 set at this volume ratio can meet the protruding volume The 360-degree panoramic camera 2 can display the gastric environment in a panoramic and multi-angle manner, and ensure the connection viscosity between the 360-degree panoramic camera 2 and the first gastric tube 1, and ensure the stability between the two. The diameter of the 360-degree panoramic camera 2 is 1 to 1.5 times the diameter of the first gastric tube 1. The diameter of a conventional gastric tube is 6 mm to 12 mm. Therefore, the diameter interval of the 360-degree panoramic camera 2 is set to 6 mm to 18 mm. The 360-degree panoramic camera 2 with this ratio can meet the needs of all-round exploration and display of the gastric environment, and can also smoothly follow the human nasal cavity, oral cavity, and stomach without causing any damage to the human body. The invention does not cause obvious discomfort to the body, that is, it meets the demand for the use of a visual gastric tube while ensuring the comfort of the patient when the gastric tube is lowered; wherein, the length of the first gastric tube 1 is set to 40cm-75cm, and the length of the first gastric tube 1 inserted into the human body is 20cm-55cm. Children are generally inserted with 20cm-25cm, and adults are generally inserted with 45cm-55cm. The length of the first gastric tube 1 is set to 40cm-75cm, which can ensure that at least 20cm of the first gastric tube 1 remains outside the human body, so as to ensure that the first gastric tube 1 of sufficient length is inserted into the human stomach for visual detection.

[0061] The existing gastric tube lacks the function of preventing reflux. When the delivery of nutrients or the extraction of gastric fluid is suddenly stopped, the nutrients or fluid in the gastric tube will reflux. The reflux can easily cause gastric acid, food residues and other substances to be inhaled into the trachea and lungs, causing infection. It can also cause repeated stimulation of the esophageal mucosa by gastric acid, causing heartburn, chest pain and other uncomfortable symptoms, increasing the discomfort and psychological burden of patients. For the above problems, please refer to Figures 1 to 4 As shown, the present invention also provides an anti-reflux device comprising a visual gastric tube, including a visual gastric tube, see Figure 2 As shown, an anti-reflux unit 3 is provided at one end of the first gastric tube 1 away from the 360-degree panoramic camera 2, and a second gastric tube 4 is connected to the side of the anti-reflux unit 3 away from the first gastric tube 1, and the 360-degree panoramic camera 2, the first gastric tube 1, the anti-reflux unit 3, and the second gastric tube 4 are connected in sequence from left to right;

[0062] Main references Figure 3 As shown, the anti-reflux unit 3 includes a first shell 3001 and a second shell 3003. A sealed cavity is provided at the bottom of the first shell 3001. A first communicating port 3005 and a second communicating port 3006 are respectively provided on the left and right sides of the sealed cavity at the bottom of the first shell 3001. The right end of the first stomach tube 1 is communicated with the sealed cavity of the first shell 3001 through the first communicating port 3005. The left end of the second stomach tube 4 is communicated with the sealed cavity of the first shell 3001 through the second communicating port 3006. The sealed cavity at the bottom of the first shell 3001 is symmetrically provided with two first horizontal portions 3007 and an arc-shaped recessed portion 3008. The arc-shaped recessed portion 3008 is recessed downward, and a second horizontal portion 3007 is provided between the two arc-shaped recessed portions 3008. 09, and the first horizontal portion 3007 and the second horizontal portion 3009 are both arranged in the horizontal direction, and the second horizontal portion 3009 has an anti-reflux plate 3010 slidably fitted on its upper surface, the top of the anti-reflux plate 3010 is connected to a movable plate 3011, and two first magnet blocks 3012 are symmetrically installed on the left and right side walls of the movable plate 3011, and displacement components are arranged on the left and right sides of the movable plate 3011; the centering and resetting operation of the movable plate 3011 and the anti-reflux plate 3010 can be realized automatically without manual intervention, thereby effectively achieving the anti-reflux function, and improving the automation degree and ease of use of the device, reducing the complexity of manual operation and the potential risk of misoperation, and providing a more reliable guarantee for the use of anti-reflux gastric tubes;

[0063] When it is necessary to use this device to deliver nutrients to the patient's stomach, a sterile syringe filled with nutrients is connected to the free end of the second gastric tube 4, and the nutrients are delivered to the bottom chamber of the first shell 3001 through the second gastric tube 4 and the second connecting port 3006 by pushing the sterile syringe. Since the bottom chamber of the first shell 3001 is in a sealed state, the anti-reflux plate 3010 can be pushed to the left by the air in the second gastric tube 4. At this time, the anti-reflux plate 3010 is separated from the second horizontal portion 3009 and is above the left arc-shaped recessed portion 3008. At this time, there is a gap between the bottom end of the anti-reflux plate 3010 and the left arc-shaped recessed portion 3008, and a connecting channel for nutrient delivery is formed. The nutrients enter through the second connecting port 3006, and are gradually pushed to the first connecting port 3005 through the gap between the anti-reflux plate 3010 and the left arc-shaped recessed portion 3008, and continue to enter the first gastric tube 1, and deliver nutrients to the patient's stomach through the through hole opened in the first gastric tube 1;

[0064] When the device is needed to extract the liquid in the patient's stomach to the outside, a sterile syringe is connected to the free end of the second gastric tube 4 for back extraction. Referring to the same principle as the above steps, the bottom chamber of the first shell 3001 is sealed, so that the liquid in the patient's stomach passes through the first gastric tube 1, the anti-reflux unit 3, and the second gastric tube 4 in sequence and finally enters the sterile syringe for collection;

[0065] An anti-reflux unit 3 is provided, which can block the nutrients or gastric fluid flowing in the first gastric tube 1 and the second gastric tube 4 when the delivery of nutrients or the extraction of gastric fluid is stopped manually, so as to prevent reflux and protect the unidirectional delivery of the patient's gastric tube when in use, and further avoid the infection risk caused by reflux and unnecessary psychological burden on the patient; in addition, through the setting of a single anti-reflux plate 3010 component, the anti-reflux requirements in two directions from the second gastric tube 4 to the first gastric tube 1 and from the first gastric tube 1 to the second gastric tube 4 are cleverly met, and the multifunctional reuse effect of the anti-reflux plate 3010 component is achieved. Compared with the traditional mode of respectively configuring anti-reflux devices for two channels, the present invention reduces the space volume occupied by the entire device, shows significant advantages in space utilization, and enhances the convenience and practicality of application in medical environments.

[0066] Main references Figure 3 and Figure 4As shown, the first shell 3001 and the second shell 3003 are detachably connected through a docking assembly; the docking assembly includes a groove 3002 opened along the circumference of the side wall of the first shell 3001, and also includes a convex strip 3004 installed on the circumference of the side wall of the second shell 3003, the convex strip 3004 corresponds to the position of the groove 3002 and is adapted in size, the convex strip 3004 is embedded in the inner cavity of the groove 3002, when the first shell 3001 and the second shell 3003 are connected, the convex strip 3004 is aligned with the groove 3002 so that it is completely embedded in the inner cavity of the groove 3002, so as to realize the snap-fit ​​connection between the first shell 3001 and the second shell 3003; the first shell 3001, the groove 3002, the second shell 3003, and the convex strip 3004 are provided, which can promote the sealed docking of the first shell 3001 and the second shell 3003, and ensure that the movable plate 3011 always moves in the sealed space, thereby ensuring the sealing of the channel and the normal realization of the anti-backflow function.

[0067] Main references Figure 3 , Figure 7 and Figure 8 As shown, the displacement assembly includes two first mounting blocks 3013 symmetrically mounted on the upper surface of the first shell 3001, one end of a first spring 3014 is mounted on the side wall of each first mounting block 3013, and a first moving block 3015 is mounted on the other end of the first spring 3014, and a second magnet block 3018 is mounted on the side of each first moving block 3015 close to the first magnet block 3012, and the two second magnet blocks 3018 correspond to the positions of the two first magnet blocks 3012 respectively; wherein the magnetic poles of the first magnet block 3012 and the second magnet block 3018 on the opposite side are the same, and in the present application, the first The magnet block 3012 and the second magnet block 3018 are both configured as magnet blocks with S poles, and the S poles on the first magnet block 3012 and the second magnet block 3018 are arranged opposite to each other, or both are configured as magnet blocks with N poles, and the N poles on the first magnet block 3012 and the second magnet block 3018 are arranged opposite to each other, thereby ensuring that there is always a repulsive force between the first magnet block 3012 and the second magnet block 3018, and the first magnet block 3012 and the second magnet block 3018 are magnet blocks commonly used on the market and meet the above-mentioned use requirements, and their models are not limited here; mainly refer to Figure 7 As shown, the displacement assembly also includes two second mounting blocks 3016 fixedly mounted on the upper surface of the first housing 3001, a first limiting rod 3017 is mounted between the two second mounting blocks 3016, and a second moving block 3019 is slidably sleeved on the first limiting rod 3017; wherein each first moving block 3015 is slidably sleeved on the first limiting rod 3017;

[0068] When the sterile syringe is pushed continuously to deliver nutrients, the movable plate 3011 moves to the left at this time. Since there is a force of repulsion between the first magnet block 3012 and the second magnet block 3018, the movable plate 3011 moving to the left will cause the second magnet block 3018 on the left to move to the left, and the first spring 3014 on the left is forced to be compressed at this time; when the nutrients are stopped manually, the elastic force of the first spring 3014 drives the second magnet block 3018 on the left to move to the right, causing the first magnet block 3012 on the left side of the movable plate 3011 to move to the right under the action of the repulsive force, that is, causing the movable plate 3011 to move to the right and reset to the initial position, that is, the anti-reflux plate 3010 under the movable plate 3011 at this time is restored to the initial position, and the anti-reflux plate 3010 is attached to the upper surface of the second horizontal portion 3009 to form a barrier to prevent the nutrients in the first gastric tube 1 from flowing back to the inner cavity of the second gastric tube 4, that is, at this time, an anti-reflux mechanism can be formed during nutrient delivery;

[0069] When the gastric juice in the patient's stomach is continuously extracted manually, referring to the same principle of the above steps, in the extraction state, the anti-reflux plate 3010 moves to the right to above the right arc-shaped recessed portion 3008 to form a connecting channel for extracting gastric juice, and the gastric juice can be pushed to the second connecting port 3006 through the first gastric tube 1, the first connecting port 3005, the anti-reflux plate 3010 and the gap between the left arc-shaped recessed portion 3008, and enter the sterile syringe through the second gastric tube 4 to collect the gastric juice; when the sterile syringe is stopped manually, referring to the above steps, the elastic force of the first spring 3014 on the right can prompt the second magnet block 3018 on the right to drive the moving plate 3011 to return to its initial position. At this time, the anti-reflux plate 3010 is attached to the upper surface of the second horizontal portion 3009 to form a barrier to prevent the gastric juice in the second gastric tube 4 from flowing back into the inner cavity of the first gastric tube 1, that is, at this time, an anti-reflux mechanism can be formed when extracting gastric juice.

[0070] Main references Figures 5 to 7 As shown, the top of the anti-backflow plate 3010 is connected to the movable plate 3011 through the first sealing unit 5; the first sealing unit 5 includes a first sealing plate 5001, which is installed above the sealing cavity at the bottom end of the first shell 3001 in the horizontal direction, and a blind groove 5002 is opened in the middle of the first sealing plate 5001, see Figure 6As shown, the bottom end of the blind groove 5002 is a thin plate 5003, and the thin plate 5003 is made of a thin sheet material on the market that will not affect magnetism, that is, the thin plate 5003 can ensure that the space below the first sealing plate 5001 is sealed, and will not affect the mutual attraction between the first permanent magnet 5004 and the second permanent magnet 5005, ensuring that the first permanent magnet 5004 and the second permanent magnet 5005 can move synchronously under the action of the force of mutual attraction. The first permanent magnet 5004 and the second permanent magnet 5005 can meet the above-mentioned usage requirements, and their models are not limited or repeated here; moving plate A first permanent magnet 5004 is installed at the bottom of 3011, a first permanent magnet 5004 is installed at the top of the anti-backflow plate 3010, a second permanent magnet 5005 is connected to the bottom of the movable plate 3011, the second permanent magnet 5005 corresponds to the first permanent magnet 5004 up and down and is magnetically attracted to each other, a second limiting rod 5006 is installed above the first sealing plate 5001 in parallel, both ends of the second limiting rod 5006 are respectively connected to the side walls of the first shell 3001, and the movable plate 3011 is slidably sleeved on the second limiting rod 5006; wherein, the bottom end of the first permanent magnet 5004 is connected to the top of the anti-backflow plate 3010;

[0071] During the process of the anti-reflux plate 3010 moving to the left, that is, when the sterile syringe is continuously pushed manually to deliver nutrients, the first permanent magnet 5004 can drive the second permanent magnet 5005 to move to the left along the surface of the thin plate 5003. At this time, the movable plate 3011 moves to the left, and the first spring 3014 on the left is forced to be in a compressed state; when the nutrients are manually stopped from being pushed, the elastic force of the first spring 3014 drives the second magnet block 3018 on the left to move to the right, prompting the movable plate 3011 to move to the right and reset to the initial position, that is, the second permanent magnet 5005, the first permanent magnet 5004, and the anti-reflux plate 3010 under the movable plate 3011 are all restored to their initial positions. At this time, the anti-reflux plate 3010 is attached to the upper surface of the second horizontal portion 3009 to form a barrier to prevent the nutrients in the first gastric tube 1 from flowing back to the inner cavity of the second gastric tube 4, that is, at this time, an anti-reflux mechanism can be formed during nutrient delivery.

[0072] Main references Figure 2 , Figures 9 to 12 As shown, a locking unit 7 is provided outside the first shell 3001 and the second shell 3003. The locking unit 7 includes two sets of locking mechanisms. The two sets of locking mechanisms are symmetrically arranged. The first shell 3001 and the second shell 3003 can be further connected and locked by the locking unit 7, thereby increasing the tightness between the first shell 3001 and the second shell 3003, and further ensuring the sealing of the enclosed space in the anti-backflow unit 3.

[0073] Each set of locking mechanisms includes a fixing seat 7001 fixedly mounted on the front side wall of the second shell 3003, a slot 7002 is provided on the outer wall of the fixing seat 7001, an insert block 7003 is slidably embedded in the inner cavity of the slot 7002, the insert block 7003 penetrates from top to bottom to form a through cavity 7004, one end of a strap 7005 is mounted on the bottom end of the insert block 7003, and the other end of the strap 7005 is inserted into the inner cavity of the through cavity 7004 from top to bottom, and the strap 7005 is made of polycarbonate or PA6 material, so that the strap 7005 has high strength, toughness, The characteristics of rigidity, that is, to ensure that the strap 7005 can have sufficient toughness to bend to wrap the outer wall of the first shell 3001 and the second shell 3003, and also have sufficient rigidity to ensure that the fixing block 7006 on the strap 7005 can be sufficiently stable after being locked; a plurality of fixing blocks 7006 are equidistantly arranged at one end of the strap 7005 inserted into the inner cavity of the through cavity 7004, and a moving rod 7007 is obliquely penetrated on the outer wall of the insert block 7003, and the moving rod 7007 is inserted into the through cavity 7004 and embedded and installed with a limiting block 7009, which limits the position. The block 7009 is embedded in the gap formed by two adjacent fixed blocks 7006, and a second spring 7008 is sleeved on the mobile rod 7007. The two ends of the second spring 7008 are respectively connected to the mobile rod 7007 and the side wall of the insert block 7003; wherein, the fixed block 7006 and the limiting block 7009 are both arranged on opposite sides with inclined end faces, the inclined end face of the fixed block 7006 is arranged downwardly in a direction close to the side wall of the strap 7005, and the inclined end face of the limiting block 7009 is arranged upwardly in a direction away from the strap 7005. The inclined end face The fixed block 7006 and the limiting block 7009 can ensure that after the strap 7005 is inserted into the inner cavity of the through cavity 7004, the limiting block 7009 is automatically driven to move outward, without manually pulling the limiting block 7009 outward to make it lose its limiting effect on the fixed block 7006, and when the strap 7005 stops being inserted, the limiting block 7009 can be inserted into the gap between two adjacent fixed blocks 7006 at corresponding positions by means of the elastic force of the second spring 7008, so as to automatically realize the positioning of the strap 7005 in the through cavity 7004;

[0074] One end of the strap 7005 with the fixing block 7006 is wrapped around the outside of the first shell 3001 and the second shell 3003, and the end is inserted from top to bottom into the inner cavity of the insertion block 7003. During the insertion process, due to the coordinated arrangement of the inclined outer wall of the fixing block 7006 and the inclined outer wall of the limiting block 7009, the limiting block 7009 can be first moved outward to achieve compression of the second spring 7008. When the limiting block 7009 moves to the gap between two adjacent fixing blocks 7006 corresponding to the limiting block 7009, the elastic force of the second spring 7008 drives the limiting block 7009 to be embedded in the gap between two adjacent fixing blocks 7006, thereby achieving limit locking of the fixing block 7006, and as the fixing block 7006 is inserted into the gap between the two adjacent fixing blocks 7006, the limiting block 7009 is locked. The fixed block 7006 continues to move downward along the inner cavity of the insert block 7003. Every time the fixed block 7006 moves a unit of distance, the limit block 7009 can be moved away from the fixed block 7009 and then embedded in the gap corresponding to the fixed block 7006 to limit the fixed block 7006. No extra locking steps are required, and the locked fixed block 7006 cannot continue to move upward until the binding band 7005 completely fits the outer wall of the first shell 3001 and the second shell 3003 to be wrapped and locked to ensure the tightness of the connection between the first shell 3001 and the second shell 3003; the first gastric tube 1 is connected to the first connecting port 3005, and the second gastric tube 4 is connected to the second connecting port 3006, and the sealing of the connection is ensured;

[0075] Through the cooperation of the fixing block 7006, the limiting block 7009 and the binding strap 7005, when the fixing block 7006 moves downward along the inner cavity of the through cavity 7004, the limiting block 7009 can be automatically triggered to produce an outward displacement change. Once the fixing block 7006 stops moving, the limiting block 7009 will automatically and accurately embed itself into the position between two adjacent fixing blocks 7006, thereby achieving an effective limiting effect on the fixing block 7006. That is, the present invention directly realizes the automatic locking function of the binding strap 7005 in the inner cavity of the through cavity 7004, and the entire operation process does not need to perform additional complex positioning steps, which greatly simplifies the operation process, and makes the positioning of the binding strap 7005 efficient, convenient and accurate, significantly improving the convenience and practicality in actual applications.

[0076] Main references Fig. 9 As shown, the shape of the slot 7002 is set to be a dovetail shape, and the opening of the slot 7002 is set on the front side of the fixing seat 7001. The dovetail-shaped slot 7002 can ensure the tight connection between the plug block 7003 and the fixing seat 7001, and ensure the tight positioning of the strap 7005 for the first shell 3001 and the second shell 3003. After the positioning, the first shell 3001 and the second shell 3003 will not be separated in the front and rear directions.

[0077] Main references Fig.10 and Fig.11As shown, a connecting unit 8 is provided between the two plug-in blocks 7003, and the connecting unit 8 can be used to elastically connect the left and right groups of plug-in blocks 7003, so as to ensure that the left and right groups of plug-in blocks 7003 and the binding strap 7005 form a connected whole, which is more stable than the binding strap 7005 provided alone, and has more stability for locking between the first shell 3001 and the second shell 3003; the connecting unit 8 includes a first connecting column 8001 and a second connecting column 8002, and a first hollow cylinder 8003 is installed at one end of the first connecting column 8001 close to the second connecting column 8002, and a second hollow cylinder 8004 is slidably inserted into the inner cavity of the first hollow cylinder 8003, and the second hollow cylinder 8004 is fixedly connected to the second connecting column 8002, and a third spring 8005 is sleeved on the first hollow cylinder 8003 and the second hollow cylinder 8004, and the two ends of the third spring 8005 are respectively connected to the first connecting column 8001 and the second connecting column 8002;

[0078] The first connecting column 8001 and the second connecting column 8002 are pulled toward both sides, so that the second hollow cylinder 8004 moves outward along the inner cavity of the second hollow cylinder 8004. At this time, the third spring 8005 is forced to stretch and lengthen. After the two groups of plug blocks 7003 on the left and right sides correspond to the inner cavities of the slots 7002 on the left and right sides respectively, the pulling force on the first connecting column 8001 and the second connecting column 8002 is removed. Under the action of the elastic force of the third spring 8005, the two groups of plug blocks 7003 on both sides slide and embed into the corresponding inner cavities of the slots 7002 respectively.

[0079] By providing the first hollow tube 8003, the second hollow tube 8004 and the third spring 8005, the distance between the two groups of plug blocks 7003 can be moved away or closer, and the two plug blocks 7003 in the state of being away from each other can be more conveniently aligned with the inner cavities of the slots 7002 at corresponding positions. With the elastic force of the third spring 8005, the two groups of plug blocks 7003 can be automatically inserted into the inner cavities of the slots 7002 at corresponding positions, so that the plug blocks 7003 are automatically inserted into the slots 7002 for connection and assembly.

[0080] The working principle of a visual gastric tube and an anti-reflux device including the gastric tube in this embodiment is as follows:

[0081] Before using the device, the device is connected and assembled: first, the first shell 3001 and the second shell 3003 are connected: align the convex strip 3004 with the groove 3002 so that it is completely embedded in the inner cavity of the groove 3002 to achieve the snap-fit ​​connection between the first shell 3001 and the second shell 3003; secondly, the first shell 3001 and the second shell 3003 are further locked and limited: pull the first connecting column 8001 and the second connecting column 8002 to both sides to cause the second hollow cylinder 8004 to move outward along the inner cavity of the second hollow cylinder 8004. At this time, the third spring 8 005 is forced to stretch and lengthen, and after the left and right sets of plug blocks 7003 are respectively aligned with the inner cavities of the slots 7002 on the left and right sides, the pulling force on the first connecting column 8001 and the second connecting column 8002 is removed, and the elastic force of the third spring 8005 causes the two sets of plug blocks 7003 on both sides to slide and embed into the corresponding inner cavities of the slots 7002 respectively; one end of the strap 7005 with the fixing block 7006 is wrapped around the outside of the first shell 3001 and the second shell 3003, and the end is forced to be inserted into the inner cavity of the plug block 7003 from top to bottom. During the insertion process, due to the tilt of the fixing block 7006 to the outside The coordinated arrangement of the wall and the inclined outer wall of the limit block 7009 can firstly cause the limit block 7009 to move outward, thereby compressing the second spring 7008. When the limit block 7009 moves to the gap between two adjacent fixed blocks 7006, the elastic force of the second spring 7008 drives the limit block 7009 to snap into the gap between two adjacent fixed blocks 7006, thereby realizing the limit locking of the fixed block 7006. As the fixed block 7006 continues to move downward along the inner cavity of the insert block 7003, the fixed block 7006 moves one unit of distance. The limiting block 7009 can be moved away from the gap of the corresponding fixing block 7006 and then embedded in the gap of the fixing block 7006 to limit the fixing block 7006 without any extra locking steps, and the fixed block 7006 cannot move upwards after being locked until the binding band 7005 completely fits the outer wall of the first shell 3001 and the second shell 3003 to be wrapped and locked to ensure the tightness of the connection between the first shell 3001 and the second shell 3003; the first gastric tube 1 is connected to the first connecting port 3005, and the second gastric tube 4 is connected to the second connecting port 3006, and the sealing of the connection is ensured;

[0082] When in use, the 360-degree panoramic camera 2 is first inserted into the patient's nasal cavity or oral cavity, so that the 360-degree panoramic camera 2 drives a part of the first gastric tube 1 into the patient's gastric environment. The 360-degree panoramic camera 2 can display the patient's gastric environment in an all-round manner through an external controller electrically connected to the 360-degree panoramic camera 2, thereby overcoming the problem of limited observation of ordinary cameras, and the anti-reflux unit 3 is placed as a whole on a table or other position with a supporting function, ensuring that the free end of the second gastric tube 4 can be operated by the staff;

[0083] When it is necessary to use this device to deliver nutrients to the patient's stomach, a sterile syringe filled with nutrients is connected to the free end of the second gastric tube 4, and the nutrients are delivered to the bottom chamber of the first shell 3001 through the second gastric tube 4 and the second connecting port 3006 by pushing the sterile syringe. Since the bottom chamber of the first shell 3001 is in a sealed state, the anti-reflux plate 3010 can be pushed to the left by the air in the second gastric tube 4. At this time, the anti-reflux plate 3010 is separated from the second horizontal portion 3009 and is above the left arc-shaped recessed portion 3008. At this time, there is a gap between the bottom end of the anti-reflux plate 3010 and the left arc-shaped recessed portion 3008, and a connecting channel for nutrient delivery is formed. The nutrients enter through the second connecting port 3006, and are gradually pushed to the first connecting port 3005 through the gap between the anti-reflux plate 3010 and the left arc-shaped recessed portion 3008, and continue to enter the first gastric tube 1, and deliver nutrients to the patient's stomach through the through hole opened in the first gastric tube 1;

[0084] In the process of the anti-backflow plate 3010 moving to the left, that is, when the sterile syringe is continuously pushed manually to deliver nutrients, the first permanent magnet 5004 can drive the second permanent magnet 5005 to move to the left along the surface of the thin plate 5003. At this time, the movable plate 3011 moves to the left. Since there is a force of repulsion between the first magnet block 3012 and the second magnet block 3018, the movable plate 3011 moving to the left will cause the second magnet block 3018 on the left to move to the left. At this time, the first spring 3014 on the left is forced to be in a compressed state. When the nutrients are stopped manually, the first spring 3 The elastic force of 014 drives the second magnet block 3018 on the left side to move to the right side, causing the first magnet block 3012 on the left side of the moving plate 3011 to move to the right side under the action of the repulsive force, that is, causing the moving plate 3011 to move to the right side and reset to the initial position, that is, at this time, the second permanent magnet 5005, the first permanent magnet 5004, and the anti-reflux plate 3010 under the moving plate 3011 are all restored to the initial position, and at this time, the anti-reflux plate 3010 is attached to the upper surface of the second horizontal part 3009 to form a barrier, so as to prevent the nutrients in the first gastric tube 1 from flowing back to the inner cavity of the second gastric tube 4, that is, at this time, an anti-reflux mechanism can be formed during nutrient delivery;

[0085] When the device is needed to extract the liquid in the patient's stomach to the outside, a sterile syringe is connected to the free end of the second gastric tube 4 for back extraction. Referring to the same principle as the above steps, the bottom chamber of the first shell 3001 is sealed, so that the liquid in the patient's stomach passes through the first gastric tube 1, the anti-reflux unit 3, and the second gastric tube 4 in sequence and finally enters the sterile syringe for collection;

[0086] In the process of the anti-reflux plate 3010 moving to the right, that is, when the gastric juice in the patient's stomach is continuously extracted manually, referring to the same principle of the above steps, with the help of the setting of the first sealing unit 5, the anti-reflux plate 3010 is moved to the right to above the right arc-shaped recessed portion 3008 in the extraction state, forming a communication channel for extracting gastric juice, and the gastric juice can be pushed to the second communication port 3006 through the gap between the first gastric tube 1, the first communication port 3005, the anti-reflux plate 3010 and the left arc-shaped recessed portion 3008. and enters the sterile syringe through the second gastric tube 4 to collect gastric juice; when the sterile syringe is manually stopped from being extracted, the above steps are referred to in the same way, and the elastic force of the first spring 3014 on the right side can prompt the second magnet block 3018 on the right side to drive the movable plate 3011 to return to the initial position. At this time, the anti-reflux plate 3010 is attached to the upper surface of the second horizontal portion 3009 to form a barrier to prevent the gastric juice in the second gastric tube 4 from flowing back to the inner cavity of the first gastric tube 1, that is, at this time, an anti-reflux mechanism can be formed when extracting gastric juice;

[0087] After use, the first gastric tube 1 and the second gastric tube 4 can be disassembled from the first connecting port 3005 and the second connecting port 3006 respectively, so that a new gastric tube can be replaced with the anti-reflux unit 3 for assembly and use next time, thereby meeting the need for equipment recycling; after use, the first shell 3001 and the second shell 3003 need to be disassembled, cleaned and disinfected: the two groups of moving rods 7007 on both sides are pulled outward to cause the limiting block 7009 to disengage from the gap between the two corresponding fixed blocks 7006 at this time, that is, the limiting block 7009 no longer limits the fixed block 7006, and the side of the strap 7005 with the fixed block 7006 is pulled outward. After the two ends are pulled upward to cause them to be separated from the inner cavity of the through cavity 7004, the first connecting column 8001 and the second connecting column 8002 are pulled to both sides to cause the two to move away from each other. At this time, the second hollow cylinder 8004 slides along the inner cavity of the first hollow cylinder 8003, and the third spring 8005 is forced to stretch and lengthen until the two groups of plug blocks 7003 slide outward to separate from the corresponding inner cavities of the slots 7002, so that the two groups of straps 7005 can be disassembled from the outside of the first shell 3001 and the second shell 3003. The first shell 3001 and the second shell 3003 are separated, and the inner cavity at the bottom of the first shell 3001 can be cleaned and disinfected.

[0088] In summary, firstly, in terms of gastric observation, a panoramic camera mode component is set at the free end of the gastric tube to effectively expand the shooting range and angle, fully display the gastric lesion site, overcome the limited observation problem of ordinary cameras, and provide more comprehensive and accurate information for the lowering of the gastric tube and pathological observation of the patient; secondly, in response to the reflux problem, a special anti-reflux component is set to block the reflux of nutrients or gastric juice when the operation is manually stopped, avoid the infection caused by the inhalation of gastric acid and other substances into the trachea and lungs, and irritate the esophageal mucosa, reduce the patient's discomfort and psychological burden, and protect the unidirectional delivery of the gastric tube; thirdly, the anti-reflux structure is cleverly designed, and two-way anti-reflux is achieved through a single component, which reduces the space occupied by the device and enhances the convenience of application in the medical environment; and the magnet principle is used in conjunction with related components to achieve automatic centering and reset, improving the automatic function of the device The degree of simplification and ease of use can be improved, and the risk of misoperation can be reduced. In addition, a variety of methods are adopted to ensure that key components move accurately in a sealed environment, multiple components cooperate to achieve synchronous movement and ensure sealing, and each component cooperates to achieve the setting of sealed docking and connection locking, so as to further ensure the normal realization of channel sealing and anti-backflow function. In addition, the strap 7005 can be automatically locked after being inserted into the inner cavity of the through cavity 7004, and the entire operation process does not require additional complex positioning steps, which greatly simplifies the operation process and significantly improves the convenience and practicality in actual application. The connection stability of components and the convenience of assembly are improved, and the setting of the connecting unit 8 prompts the left and right sets of plug blocks 7003 and the strap 7005 to form a connected whole, which is more stable than the single strap 7005.

[0089] Example 2

[0090] The difference between this embodiment and the first embodiment is that in the present application, the sealing property of the inner cavity of the anti-backflow unit 3 is ensured by the second sealing unit 6 .

[0091] Main references Fig.13 and Fig.14 As shown, the top of the anti-backflow plate 3010 is connected to a moving plate 3011 through a second sealing unit 6;

[0092] The second sealing unit 6 includes a second sealing plate 6001, which is installed above the sealing cavity at the bottom end of the first shell 3001 in the horizontal direction. Two arc grooves 6002 are symmetrically provided on the upper surface of the second sealing plate 6001. The arc grooves 6002 are recessed downward. A sunken portion 6003 is provided between the two arc grooves 6002. A through groove 6004 is provided through the sunken portion 6003 in the vertical direction. A sliding block 6005 is slidably embedded in the inner cavity of the through groove 6004. A cylindrical Body 6006, the cylinder 6006 is slidably fitted along the upper surfaces of the two arc grooves 6002, a third limiting rod 6007 is installed parallel to the second sealing plate 6001, both ends of the third limiting rod 6007 are respectively connected to the side walls of the first shell 3001, and the cylinder 6006 is slidably sleeved on the third limiting rod 6007; wherein, the sliding block 6005 is connected to the top of the anti-backflow plate 3010, the bottom end of the cylinder 6006 is connected to the top of the sliding block 6005, and the top of the cylinder 6006 is connected to the movable plate 3011.

[0093] The principle of ensuring the sealing of the inner cavity at the bottom end of the first housing 3001 by the second sealing unit 6 is as follows:

[0094] When the anti-backflow plate 3010 is forced to move to the left or right, it can drive the sliding block 6005 and the cylinder 6006 to move synchronously. The sliding block 6005 always moves along the inner cavity of the through groove 6004 without being restricted, and the cylinder 6006 always moves along the surface of the arc groove 6002, which can ensure that the chamber at the bottom of the second sealing plate 6001 is always in a sealed state. While ensuring the horizontal movement of the anti-backflow plate 3010, the sliding block 6005, the cylinder 6006, and the movable plate 3011, the sealing of the chamber below the second sealing plate 6001 is guaranteed, thereby ensuring the normal application of the anti-backflow function in a sealed environment.

[0095] There are two types of settings, namely a first sealing unit 5 and a second sealing unit 6, which can be used as needed. Either method can ensure that the anti-backflow plate 3010 is always moved in a sealed environment, and can effectively eliminate the interference of external factors on the movement process of the anti-backflow plate 3010, thereby ensuring that during manual operation, the anti-backflow plate 3010 can be accurately and correctly caused to perform a stable displacement movement in the expected direction, that is, to the left or to the right, to realize the opening and use of the channel in the corresponding direction.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A visual gastric tube, comprising a first gastric tube (1), characterized in that: The free end of the first gastric tube (1) is an end inserted into the human stomach, the free end of the first gastric tube (1) is provided with a plurality of through holes, a 360-degree panoramic camera (2) is installed at the free end of the first gastric tube (1), the 360-degree panoramic camera (2) is centrally arranged at the free end of the first gastric tube (1), and the portion of the 360-degree panoramic camera (2) protruding from the first gastric tube (1) accounts for two-thirds of the volume of the 360-degree panoramic camera (2), and the diameter of the 360-degree panoramic camera (2) is 1 to 1.5 times the diameter of the first gastric tube (1); Wherein, the length of the first gastric tube (1) is set to be 40 cm to 75 cm.

2. An anti-reflux device comprising a visual gastric tube, characterized in that: Comprising the visual gastric tube according to claim 1, an anti-reflux unit (3) is provided at one end of the first gastric tube (1) away from the 360-degree panoramic camera (2), and a second gastric tube (4) is connected to the side of the anti-reflux unit (3) away from the first gastric tube (1); The anti-backflow unit (3) comprises a first shell (3001) and a second shell (3003), wherein a sealed cavity is arranged at the bottom end of the first shell (3001), and a first communication port (3005) and a second communication port (3006) are respectively provided on the left and right sides of the sealed cavity at the bottom end of the first shell (3001), and the sealed cavity at the bottom end of the first shell (3001) is symmetrically provided with two first horizontal portions (3007) and an arc-shaped recessed portion (3008), wherein the arc-shaped recessed portion (3008) is recessed downwards, and the two arc-shaped recessed portions (3008) are arranged to be spaced apart from each other. A second horizontal portion (3009) is arranged between the recessed portions (3008), and the first horizontal portion (3007) and the second horizontal portion (3009) are both arranged in the horizontal direction, an anti-backflow plate (3010) is slidably arranged on the upper surface of the second horizontal portion (3009), a moving plate (3011) is connected to the top of the anti-backflow plate (3010), two first magnet blocks (3012) are symmetrically installed on the left and right side walls of the moving plate (3011), and displacement components are arranged on the left and right sides of the moving plate (3011).

3. The anti-reflux device comprising a visible gastric tube according to claim 2, characterized in that: The displacement assembly comprises two first mounting blocks (3013) symmetrically mounted on the upper surface of the first housing (3001), one end of a first spring (3014) being mounted on the side wall of each of the first mounting blocks (3013), a first moving block (3015) being mounted on the other end of the first spring (3014), a second magnet block (3018) being mounted on a side of each of the first moving blocks (3015) close to the first magnet block (3012), and the two second magnet blocks (3018) respectively correspond to the positions of the two first magnet blocks (3012); The magnetic poles of the first magnet block (3012) and the second magnet block (3018) on the opposite side are the same.

4. The anti-reflux device comprising a visible gastric tube according to claim 3, characterized in that: The displacement assembly further comprises two second mounting blocks (3016) fixedly mounted on the upper surface of the first housing (3001), a first limiting rod (3017) being mounted between the two second mounting blocks (3016), and a second moving block (3019) being slidably sleeved on the first limiting rod (3017); Wherein, each of the first moving blocks (3015) is slidably mounted on the first limiting rod (3017).

5. The anti-reflux device comprising a visible gastric tube according to claim 2, characterized in that: The top end of the anti-backflow plate (3010) is connected to a movable plate (3011) via a first sealing unit (5); The first sealing unit (5) comprises a first sealing plate (5001), the first sealing plate (5001) being installed horizontally above the sealing cavity at the bottom end of the first shell (3001), a blind groove (5002) being provided in the middle of the first sealing plate (5001), the bottom end of the blind groove (5002) being a thin plate (5003), a first permanent magnet (5004) being installed at the bottom end of the movable plate (3011), and a first permanent magnet (5004) being installed at the top end of the anti-backflow plate (3010). 004), a second permanent magnet (5005) is connected to the bottom of the movable plate (3011), the second permanent magnet (5005) corresponds to the first permanent magnet (5004) in upper and lower directions and is magnetically attracted to each other, a second limiting rod (5006) is installed above the first sealing plate (5001) in parallel, both ends of the second limiting rod (5006) are respectively connected to the side walls of the first shell (3001), and the movable plate (3011) is slidably sleeved on the second limiting rod (5006); Wherein, the bottom end of the first permanent magnet (5004) is connected to the top end of the anti-backflow plate (3010).

6. The anti-reflux device comprising a visible gastric tube according to claim 2, characterized in that: The top end of the anti-backflow plate (3010) is connected to a movable plate (3011) via a second sealing unit (6); The second sealing unit (6) comprises a second sealing plate (6001), the second sealing plate (6001) being installed above the sealing cavity at the bottom end of the first shell (3001) in the horizontal direction, the upper surface of the second sealing plate (6001) being provided with two arc-shaped grooves (6002) symmetrically on the left and right, the arc-shaped grooves (6002) being recessed downwards, a sunken portion (6003) being provided between the two arc-shaped grooves (6002), the sunken portion (6003) being provided with a through groove (6004) penetrating in the vertical direction, the through groove A sliding block (6005) is slidably embedded in the inner cavity (6004), a cylinder (6006) is installed on the top of the sliding block (6005), and the cylinder (6006) is slidably fitted along the upper surfaces of the two arc-shaped grooves (6002), a third limiting rod (6007) is installed parallel to the upper surface of the second sealing plate (6001), and both ends of the third limiting rod (6007) are respectively connected to the side walls of the first shell (3001), and the cylinder (6006) is slidably sleeved on the third limiting rod (6007); The sliding block (6005) is connected to the top of the anti-backflow plate (3010), the bottom of the cylinder (6006) is connected to the top of the sliding block (6005), and the top of the cylinder (6006) is connected to the moving plate (3011).

7. The anti-reflux device comprising a visible gastric tube according to claim 2, characterized in that: A locking unit (7) is arranged on the outside of the first shell (3001) and the second shell (3003), and the locking unit (7) comprises two sets of locking mechanisms, and the two sets of locking mechanisms are arranged symmetrically on the left and right; Each group of the locking mechanisms comprises a fixing seat (7001) fixedly mounted on the front side wall of the second shell (3003); a slot (7002) is provided on the outer side wall of the fixing seat (7001); an insert block (7003) is slidably embedded in the inner cavity of the slot (7002); a through cavity (7004) is formed through the insert block (7003) from top to bottom; one end of a strap (7005) is mounted on the bottom end of the insert block (7003); the other end of the strap (7005) is inserted into the inner cavity of the through cavity (7004) from top to bottom; and the strap (7005) is inserted into the through cavity (7004). 004) one end of the inner cavity is provided with a plurality of fixed blocks (7006) at equal intervals, the outer wall of the insert block (7003) is obliquely penetrated with a moving rod (7007), the moving rod (7007) is inserted into the through cavity (7004) and embedded with a limiting block (7009), the limiting block (7009) is embedded in the gap formed by two adjacent fixed blocks (7006), the moving rod (7007) is sleeved with a second spring (7008), and the two ends of the second spring (7008) are respectively connected to the moving rod (7007) and the side wall of the insert block (7003); The opposite sides of the fixing block (7006) and the limiting block (7009) are both arranged as inclined end faces, the inclined end face of the fixing block (7006) is arranged to be inclined downward in a direction close to the side wall of the binding strap (7005), and the inclined end face of the limiting block (7009) is arranged to be inclined upward in a direction away from the binding strap (7005).

8. The anti-reflux device comprising a visible gastric tube according to claim 7, characterized in that: The slot (7002) is opened in a dovetail shape, and the opening of the slot (7002) is arranged at the front side of the fixing seat (7001).

9. The anti-reflux device comprising a visible gastric tube according to claim 7, characterized in that: A connecting unit (8) is provided between the two plug-in blocks (7003); The connecting unit (8) comprises a first connecting column (8001) and a second connecting column (8002), wherein a first hollow cylinder (8003) is installed at one end of the first connecting column (8001) close to the second connecting column (8002), a second hollow cylinder (8004) is slidably inserted into the inner cavity of the first hollow cylinder (8003), and the second hollow cylinder (8004) is fixedly connected to the second connecting column (8002), and a third spring (8005) is sleeved on the first hollow cylinder (8003) and the second hollow cylinder (8004), and the two ends of the third spring (8005) are respectively connected to the first connecting column (8001) and the second connecting column (8002).

10. The anti-reflux device comprising a visible gastric tube according to claim 2, characterized in that: The first shell (3001) and the second shell (3003) are detachably connected via a docking assembly; The docking assembly includes a groove (3002) opened along the circumference of the side wall of the first shell (3001), and also includes a convex strip (3004) installed on the circumference of the side wall of the second shell (3003), the convex strip (3004) corresponds to the position of the groove (3002) and is adapted in size, and the convex strip (3004) is embedded in the inner cavity of the groove (3002).

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