Safe gastric lavage device suitable for children

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a safe gastric lavage device suitable for children, the gastric lavage device comprises a first base and a second base, the second base is fixed on one side of the first base, and two sides of the first base are rotatably connected with a first supporting arm and a second supporting arm respectively; the two sides of the second base are rotationally connected with a third supporting arm and a fourth supporting arm respectively, a first connecting rod is fixed between the first supporting arm and the third supporting arm, a second connecting rod is fixed between the second supporting arm and the fourth supporting arm, and the first supporting arm, the third supporting arm and the first connecting rod jointly form an upper supporting unit. By rotating the first driving shaft rod, the upper supporting unit and the lower supporting unit support and limit the oral cavity of a child, a stomach tube is limited through the multiple limiting sleeves distributed in a broken line form, the insertion depth of the stomach tube is prevented from being changed, and the safety of the child in the gastric lavage process is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a safe gastric lavage device suitable for children. BACKGROUND

[0002] Gastric lavage is a core emergency treatment method for patients who have taken toxic substances or taken too much medicine by mistake. The core is to build a path between the stomach cavity and the external flushing equipment (such as a gastric lavage machine) through a gastric tube, and to rely on the circulation of flushing liquid to remove harmful substances in the stomach, thereby gaining critical time for emergency treatment. In the gastric lavage process of adults and patients with high cooperation degree, in order to prevent the patient from biting and causing damage, blockage or position deviation of the gastric tube, the industry usually uses the auxiliary scheme of "medical mouthpiece plus binding belt": the medical mouthpiece is placed in the oral cavity to isolate the direct contact between the teeth and the gastric tube, thereby playing a basic protection role; the supporting binding belt is used to limit the position of the mouthpiece to avoid displacement of the mouthpiece, thereby ensuring the stability of the gastric tube path, which can effectively meet the continuity and safety requirements of the gastric lavage operation in the adult scenario. However, when this scheme is applied to children's gastric lavage, its adaptability and safety defects are completely exposed. Children have an instinctive resistance to foreign objects in the oral cavity, and the placement of a medical mouthpiece can easily trigger strong foreign body sensation, directly triggering children's shaking, tongue pushing the mouthpiece and other resistance actions. At the same time, the fixing method of the existing binding belt cannot resist the force generated by the above resistance actions of children, and it is difficult to maintain the stable position of the mouthpiece. Children's shaking or tongue pushing can easily cause the mouthpiece to shift or even fall out, which directly leads to the obstruction of the intubation process - medical staff need to repeatedly adjust the body position of children to try intubation, greatly prolonging the emergency time. The inserted gastric tube can also shift position with the shaking of the child's head and swallowing action, resulting in over-insertion (possibly into the trachea or duodenum, causing choking, perforation risk) or under-insertion (flushing liquid overflow due to failure to reach the stomach cavity). In addition, if the mouthpiece falls off, the child may bite the gastric tube during the crying process, causing damage to the gastric tube, and ultimately requiring a second intubation, which not only increases the physiological pain of children, but also increases the risk of oral mucosa damage and infection. In summary, the existing "medical mouthpiece plus binding belt" gastric lavage auxiliary scheme is essentially a general scheme designed based on adult needs, which does not fully consider the oral physiological characteristics (such as sensitive swallowing reflex and special oral activity pattern) and psychological characteristics (strong resistance to foreign objects) of children, and does not optimize the fixing effect of the binding belt for children's resistance actions. In the context of children's gastric lavage, it forms a vicious cycle of "strong foreign body sensation → multiple resistance actions → failure of binding belt fixation → mouthpiece displacement / falling out → intubation difficulty + gastric tube depth out of control + tube damage → second intubation", which seriously affects the safety, effectiveness and comfort of children's gastric lavage. Based on the above problems, the present application proposes a safe gastric lavage device suitable for children to improve the above problems. SUMMARY

[0003] The purpose of the present application is to provide a safe gastric lavage device suitable for children, by rotating the first drive shaft rod (21), the upper support unit and the lower support unit form support and limit for the oral cavity of the child, and the multiple limiting sleeves (35) distributed in the form of a fold line limit the stomach tube, avoiding changes in the insertion depth of the stomach tube, and improving the safety of the child during gastric lavage.

[0004] The technical solutions adopted by the present application are as follows: A safe gastric lavage device suitable for children, comprising a first base and a second base, the second base is fixed on one side of the first base, the two sides of the first base are respectively rotatably connected with a first support arm and a second support arm, the two sides of the second base are respectively rotatably connected with a third support arm and a fourth support arm, and the first support arm and the third support arm are fixed with a first connecting rod, the second support arm and the fourth support arm are fixed with a second connecting rod, the first support arm, the third support arm and the first connecting rod jointly constitute an upper support unit, the second support arm, the fourth support arm and the second connecting rod jointly constitute a lower support unit, the upper ends of the first support arm and the third support arm and the lower ends of the second support arm and the fourth support arm are provided with tooth grooves, further comprising: A support driving assembly is assembled between the upper support unit and the lower support unit, the support driving assembly comprises a first drive shaft rod, a first sliding block, a first transmission rod and a second transmission rod, one end of the first drive shaft rod is rotatably connected with the second base, the first sliding block is threadedly connected to the outer side of the first drive shaft rod, the first transmission rod is rotatably connected to the upper end of the first sliding block, the second transmission rod is rotatably connected to the lower end of the first sliding block, and the first transmission rod and the third support arm and the second transmission rod and the fourth support arm are rotatably connected; A limiting assembly is assembled between the upper support unit and the lower support unit, and the support driving assembly and the limiting assembly are connected, the limiting assembly is configured to limit the stomach tube; Wherein, rotating the first drive shaft rod drives the first sliding block to move, and the first transmission rod and the second transmission rod can adjust the included angle between the third support arm and the fourth support arm and form a limiting.

[0005] In a preferred scheme, the support driving assembly further comprises a second driving shaft, a second sliding block, a third transmission rod and a fourth transmission rod, one end of the second driving shaft is rotationally connected to the first base, the second driving shaft is connected to the limiting assembly, the second sliding block is slidingly connected to the outer side of the second driving shaft, the third transmission rod is rotationally connected to the upper end of the second sliding block, the fourth transmission rod is rotationally connected to the lower end of the second sliding block, and the third transmission rod and the first support arm and the fourth transmission rod and the second support arm are rotationally connected, wherein the second driving shaft is configured to drive the limiting assembly to transform between the initial state and the limiting state.

[0006] In a preferred scheme, the interiors of the first support arm, the second support arm, the third support arm and the fourth support arm are provided with avoiding grooves, and the ends of the first driving shaft and the second driving shaft away from the first base are provided with knobs, and the outer sides of the knobs are provided with anti-skid lines.

[0007] In a preferred scheme, the limiting assembly comprises a third sliding block, a fourth sliding block, an input sleeve and an output sleeve, the third sliding block is threadedly connected to the outer side of the second driving shaft, the fourth sliding block is slidingly connected to the outer side of the first driving shaft, the input sleeve is fixed between the third sliding block and the fourth sliding block, the output sleeve is fixed between the first base and the second base, a plurality of limiting sleeves are assembled between the input sleeve and the output sleeve, the plurality of limiting sleeves are sequentially arranged between the input sleeve and the output sleeve, elastic elements are fixed between the input sleeve and the nearest limiting sleeve, the output sleeve and the nearest limiting sleeve and adjacent two limiting sleeves, and adjacent two elastic elements are alternately arranged in the vertical direction, wherein when the limiting assembly is transformed from the initial state to the limiting state, the plurality of limiting sleeves are in a zigzag shape.

[0008] In a preferred scheme, the zigzag shape is any one of the following shapes: V-shaped, W-shaped and M-shaped.

[0009] In a preferred scheme, in the free state, the cross-sectional shape of the elastic element in the vertical cross section is V-shaped.

[0010] In a preferred scheme, the ends of the input sleeve and the output sleeve close to each other and the two ends of the limiting sleeve are provided with arc-shaped avoiding surfaces.

[0011] In a preferred scheme, the interiors of the input sleeve, the output sleeve and the limiting sleeve are fixed with anti-skid bushings, and the inner walls of the anti-skid bushings are uniformly provided with a plurality of anti-skid lines.

[0012] The technical effects achieved by the application are as follows: The application is placed in the oral cavity when stomach lavage is performed on children, the first drive shaft rod is rotated, the third support arm and the fourth support arm are rotated and the included angle is gradually increased, the oral cavity is supported and limited by the upper support unit and the lower support unit, the oral cavity of the children cannot be closed, the phenomenon that the stomach tube is bitten, the device is dropped and displaced due to the resisting behavior of the children during intubation is avoided, and the device can effectively limit the oral cavity of the children; The stomach tube is sequentially penetrated into the inside of the input sleeve, the limiting sleeve and the output sleeve, the second drive shaft rod is rotated, the plurality of limiting sleeves are changed from the linear type to the broken line shape, the stomach tube is limited by the cooperation of the plurality of limiting sleeves in the broken line shape, the insertion depth of the stomach tube is changed during the crying of the children, and the perforation or invalid stomach lavage state is avoided, the safety performance of the device is improved, and the safety hidden danger during the stomach lavage of the children is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the overall structure schematic diagram of the application; Figure 2 is the rear view of the overall structure of the application; Figure 3 is the sectional view of the overall structure of the application; Figure 4 is the structure schematic diagram of the support drive assembly of the application; Figure 5 is the structure schematic diagram of the limiting assembly of the application; Figure 6 is the local structure schematic diagram of the limiting assembly of the application; Figure 7 is the structure schematic diagram of the limiting sleeve of the application; Figure 8 is the structure schematic diagram of the device in the initial state of the application.

[0014] In the drawings, the component list represented by each mark is as follows: 10, first base; 11, second base; 12, first support arm; 13, second support arm; 14, third support arm; 15, fourth support arm; 16, first connecting rod; 17, second connecting rod; 18, avoiding groove; 20, support drive assembly; 21, first drive shaft rod; 22, first sliding block; 23, first transmission rod; 24, second transmission rod; 25, second drive shaft rod; 26, second sliding block; 27, third transmission rod; 28, fourth transmission rod; 30, limiting assembly; 31, third slider; 32, fourth slider; 33, input sleeve; 34, output sleeve; 35, limiting sleeve; 36, elastic element; 37, arc-shaped avoiding surface. DETAILED DESCRIPTION

[0015] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0016] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given herein. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the present application. Therefore, the specific embodiments given herein are not to be interpreted as limiting the scope of the application.

[0017] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In a preferred embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0018] Thirdly, the present application is described in detail in conjunction with the schematic drawings, and in the detailed description of the embodiments of the present application, the sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic drawings are only examples, which should not limit the scope of protection of the present application herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual manufacture.

[0019] Please refer to the accompanying drawings Figures 1 to 4 As shown in the first embodiment of the present application, the embodiment provides a safe gastric lavage device suitable for children, which comprises a first base 10 and a second base 11, the second base 11 is fixed on one side of the first base 10, the first base 10 is rotatably connected with a first support arm 12 and a second support arm 13 on both sides respectively, the second base 11 is rotatably connected with a third support arm 14 and a fourth support arm 15 on both sides respectively, and a first connecting rod 16 is fixed between the first support arm 12 and the third support arm 14, a second connecting rod 17 is fixed between the second support arm 13 and the fourth support arm 15, the first support arm 12, the third support arm 14 and the first connecting rod 16 jointly constitute an upper support unit, the second support arm 13, the fourth support arm 15 and the second connecting rod 17 jointly constitute a lower support unit, the upper ends of the first support arm 12 and the third support arm 14 and the lower ends of the second support arm 13 and the fourth support arm 15 are provided with tooth grooves matched with teeth, and the safe gastric lavage device further comprises: A support drive assembly 20 is assembled between an upper support unit and a lower support unit. The support drive assembly 20 includes a first drive shaft 21, a first slider 22, a first transmission rod 23, and a second transmission rod 24. The first drive shaft 21 is rotatably connected to one end of the second base 11. The first drive shaft 21 is configured to drive the support drive assembly 20 to change between an initial state and a limited state. The first slider 22 is threadedly connected to the outside of the first drive shaft 21. The first transmission rod 23 is rotatably connected to the upper end of the first slider 22. The second transmission rod 24 is rotatably connected to the lower end of the first slider 22. The first transmission rod 23 and the third support arm 14, as well as the second transmission rod 24 and the fourth support arm 15, are all rotatably connected. The limiting component 30 is assembled between the upper support unit and the lower support unit, and the support drive component 20 is connected to the limiting component 30. The limiting component 30 is configured to limit the gastric tube. The rotation of the first drive shaft 21 drives the first slider 22 to move, and the angle between the third support arm 14 and the fourth support arm 15 can be adjusted and limited by the first transmission rod 23 and the second transmission rod 24.

[0020] It should be noted that a gastric lavage machine is also used in conjunction with this device. The gastric lavage machine is equipped with a gastric tube, and the gastric tube and the limiting component 30 are compatible.

[0021] Furthermore, the initial state refers to the state where the device is not placed inside the patient's oral cavity and the angle between the third support arm 14 and the fourth support arm 15 is at its minimum value; the limiting state refers to the state where the device is placed inside the patient's oral cavity, the patient's oral cavity is opened to its maximum angle, and the device limits the patient's oral cavity, preventing the patient's oral cavity from closing.

[0022] In this embodiment, when the child is given gastric lavage, the child opens the mouth, the medical staff places the device inside the child's mouth, rotates the first drive shaft rod 21, and through the threaded connection of the first drive shaft rod 21 and the first sliding block 22, the first drive shaft rod 21 drives the first sliding block 22 to move. Since the first sliding block 22 and the first transmission rod 23, the first transmission rod 23 and the third support arm 14, the first sliding block 22 and the second transmission rod 24, and the second transmission rod 24 and the fourth support arm 15 are all connected, the third support arm 14, the fourth support arm 15, the first transmission rod 23 and the second transmission rod 24 are driven by the first sliding block 22 to rotate synchronously, so that the included angle between the third support arm 14 and the fourth support arm 15 gradually increases. At the same time, since the first support arm 12 and the third support arm 14 and the second support arm 13 and the fourth support arm 15 are fixedly connected, the first support arm 12 and the second support arm 13 are driven by the third support arm 14 and the fourth support arm 15 to move synchronously, and the upper support unit and the lower support unit limit the upper teeth and the lower teeth of the child respectively, so that the child's mouth cannot be closed, avoiding the phenomenon of biting the stomach tube or the device falling off or moving during the child's crying process. In this process, it is necessary to ensure that the upper teeth and the lower teeth of the child are located inside the tooth groove. When the support driving assembly 20 changes from the initial state to the limiting state, the stomach tube is transported through the inside of the limiting assembly 30 to the stomach of the child, and the limiting assembly 30 is operated to limit the stomach tube, avoiding the change of the insertion depth of the stomach tube during the child's crying process, thereby avoiding the risk of perforation caused by excessive insertion and the phenomenon that the stomach tube cannot be effectively washed due to shallow insertion. Effectively avoid the safety hazards in the process of gastric lavage of children. After gastric lavage is completed, the first drive shaft rod 21 is rotated in the opposite direction, so that the support driving assembly 20 changes from the limiting state to the initial state, and the limiting of the teeth by the upper support unit and the lower support unit is released. Take out the device and the stomach tube, and the gastric lavage operation of the child patient can be completed.

[0023] Secondly, please refer to Figure 4 , the support driving assembly 20 further comprises a second drive shaft rod 25, a second sliding block 26, a third transmission rod 27 and a fourth transmission rod 28. One end of the second drive shaft rod 25 is rotatably connected to the first base 10. The second drive shaft rod 25 is connected with the limiting assembly 30. The second sliding block 26 is slidably connected to the outer side of the second drive shaft rod 25. The third transmission rod 27 is rotatably connected to the upper end of the second sliding block 26. The fourth transmission rod 28 is rotatably connected to the lower end of the second sliding block 26. The third transmission rod 27 and the first support arm 12, and the fourth transmission rod 28 and the second support arm 13 are rotatably connected. The second drive shaft rod 25 is configured to drive the limiting assembly 30 to change between the initial state and the limiting state.

[0024] In this embodiment, when the device is placed inside the oral cavity of a child for gastric lavage, the first drive shaft rod 21 is rotated, so that the support drive assembly 20 is transformed from the initial state to the limiting state, the second drive shaft rod 25 is rotated, and the limiting assembly 30 is driven by the second drive shaft rod 25 to transform from the initial state to the limiting state. The limiting assembly 30 in the limiting state limits the gastric tube, preventing the insertion depth of the gastric tube from changing and causing perforation or ineffective gastric lavage.

[0025] Secondly, please refer to Figure 4 , the inside of the first support arm 12, the second support arm 13, the third support arm 14 and the fourth support arm 15 are provided with a plurality of avoiding grooves 18, and the avoiding grooves 18 are respectively matched with the first transmission rod 23, the second transmission rod 24, the third transmission rod 27 and the fourth transmission rod 28. The first drive shaft rod 21 and the second drive shaft rod 25 are provided with a rotating handle at the end away from the first base 10, and the outer side of the rotating handle is provided with anti-skid lines.

[0026] In this embodiment, the avoiding grooves 18 can avoid interference between the first support arm 12, the second support arm 13, the third support arm 14 and the fourth support arm 15 and the first transmission rod 23, the second transmission rod 24, the third transmission rod 27 and the fourth transmission rod 28 during rotation. The rotating handle can increase the friction between the first drive shaft rod 21 and the second drive shaft rod 25 and the hands of medical staff, facilitating the medical staff to apply force.

[0027] Secondly, please refer to Figures 5 to 7 , the limiting assembly 30 includes a third sliding block 31, a fourth sliding block 32, an input sleeve 33 and an output sleeve 34. The third sliding block 31 is threadedly connected to the outer side of the second drive shaft rod 25, and the fourth sliding block 32 is slidingly connected to the outer side of the first drive shaft rod 21. The input sleeve 33 is fixed between the third sliding block 31 and the fourth sliding block 32, and the output sleeve 34 is fixed between the first base 10 and the second base 11. A plurality of limiting sleeves 35 are assembled between the input sleeve 33 and the output sleeve 34, and the limiting sleeves 35 are arranged in sequence between the input sleeve 33 and the output sleeve 34. An elastic element 36 is fixed between the input sleeve 33 and the nearest limiting sleeve 35, the output sleeve 34 and the nearest limiting sleeve 35, and the adjacent two limiting sleeves 35. The adjacent two elastic elements 36 are alternately arranged in the vertical direction. When the limiting assembly 30 is transformed from the initial state to the limiting state, the plurality of limiting sleeves 35 are in a broken line shape.

[0028] Specifically, in the free state, the cross-sectional shape of the elastic element 36 in the vertical section is V-shaped, wherein the free state refers to the state of the elastic element 36 when it is not installed and not subjected to external pressure or tension, and in the initial state, the elastic element 36 is in a stretched state under the cooperation of the input sleeve 33 and the output sleeve 34, and in the initial state, the central axes of the input sleeve 33, the output sleeve 34 and the plurality of limiting sleeves 35 are located on the same straight line, and the input sleeve 33, the output sleeve 34 and the plurality of limiting sleeves 35 are arranged in a straight line Further, the fold line shape is any one of the following shapes: V-shaped, W-shaped, M-shaped, wavy or other curved shape, in this embodiment, when the limiting assembly 30 is in the limiting state, the plurality of limiting sleeves 35 are distributed in M shape.

[0029] In this embodiment, when the support driving assembly 20 is transformed from the initial state to the limiting state, the child's oral cavity is limited by the cooperation of the upper support unit and the lower support unit, so that the child's oral cavity cannot be closed, and the gastric tube is sequentially inserted into the inside of the input sleeve 33, the limiting sleeve 35 and the output sleeve 34, until the insertion depth of the gastric tube reaches the expected value, the second drive shaft 25 is rotated, the second drive shaft 25 and the third sliding block 31 are threadedly connected, so that the second drive shaft 25 drives the third sliding block 31 to move, the third sliding block 31 and the input sleeve 33 are fixedly connected, so that the third sliding block 31 drives the input sleeve 33 to move towards the output sleeve 34, the tension of the input sleeve 33 acting on the elastic element 36 gradually decreases, the elastic element 36 in the stretched state gradually changes to the free state, the limiting assembly 30 changes from the initial state to the limiting state, and the plurality of limiting sleeves 35 changes from a straight line to a fold line, through the cooperation of the plurality of limiting sleeves 35 distributed in the fold line shape, the gastric tube is limited, avoiding the change of the insertion depth of the gastric tube during the crying process of the child, thereby avoiding the state of perforation or invalid gastric lavage, improving the safety performance of the device, and effectively avoiding the safety hazard during the gastric lavage process of the child.

[0030] It should be noted that the specific principle of limiting the stomach tube by the plurality of limiting sleeve 35 distributed in the shape of a broken line is as follows: the plurality of limiting sleeve 35 distributed in the shape of a broken line forms a limiting pipeline, and the limiting pipeline in the shape of a broken line has at least one bending corner non-straight through structure. When the child shakes his head and moves his brain, causing the stomach tube to move relative to the limiting assembly 30, the stomach tube needs to move synchronously along the path of the limiting pipeline. When passing through the bending corner, the stomach tube needs to bend and deform to adapt to the angle of the corner due to its own rigidity and flexibility. The inner wall of the corner of the limiting pipeline will form a physical block to the bending part of the stomach tube (the outer wall of the stomach tube when bending will be closely attached to the inner wall of the corner, and the inner wall will form a supporting contact with the outer wall of the corner. This contact relationship will generate a reaction force that hinders the stomach tube from moving in the pulling direction); at the same time, the basic friction between the stomach tube and the inner wall of the limiting sleeve 35 is significantly increased due to the increased contact pressure caused by the bending deformation of the stomach tube at the corner, further enhancing the resistance to the pulling action of the stomach tube, and the bending deformation of the stomach tube has its own structural limit. The fixed angle of the broken line corner limits the maximum bending degree of the stomach tube, and the movement trend of the stomach tube is effectively limited, thereby realizing the limiting effect of the limiting pipeline on the stomach tube.

[0031] Please refer again to Figure 6 and Figure 7 , the ends of the input sleeve 33 and the output sleeve 34 close to each other and the two ends of the limiting sleeve 35 are provided with arc-shaped avoiding surfaces 37. From one end of the input sleeve 33, every two adjacent arc-shaped avoiding surfaces 37 form a group and are marked as corner avoiding grooves, and the adjacent two corner avoiding grooves are arranged alternately in the vertical direction.

[0032] In this embodiment, the corner avoiding grooves are arranged to avoid the corner from collapsing after the stomach tube changes from a straight line to a broken line, thereby avoiding the stomach tube in the shape of a broken line from reducing the efficiency of gastric lavage.

[0033] In a preferred embodiment, anti-skid bushings (not shown in the figure) are fixed inside the input sleeve 33, the output sleeve 34 and the limiting sleeve 35, and a plurality of anti-skid lines are uniformly arranged on the inner wall of the anti-skid bushing.

[0034] Here, the inner diameter of the anti-skid bushing is marked as D1, and the outer diameter of the stomach tube is marked as D2. D2+2mm<D1<D2+4mm. By this arrangement, it is ensured that the stomach tube can be conveniently inserted into the stomach of the patient, and when the limiting assembly 30 is in the limiting state, the gap between the stomach tube and the anti-skid bushing is large, and the limiting assembly 30 cannot effectively limit the stomach tube.

[0035] In this embodiment, the anti-skid bushing can increase the friction between the stomach tube in the shape of a broken line and the limiting sleeve 35, and further improve the limiting effect of the limiting assembly 30 on the stomach tube.

[0036] The working principle of the present application is: When the stomach of the child is washed, the child opens the oral cavity, the medical staff places the device in the oral cavity of the child, rotates the first driving shaft rod 21, moves the first driving shaft rod 21 through the threaded connection of the first driving shaft rod 21 and the first sliding block 22, moves the first sliding block 22 through the first sliding block 22, rotates the third supporting arm 14, the fourth supporting arm 15, the first transmission rod 23 and the second transmission rod 24 synchronously through the first sliding block 22, gradually increases the included angle between the third supporting arm 14 and the fourth supporting arm 15, forms limiting through the upper supporting unit and the lower supporting unit to the upper teeth and the lower teeth of the child respectively, so that the oral cavity of the child cannot be closed, the stomach tube is sequentially conveyed to the stomach of the child through the inside of the input sleeve 33, the limiting sleeve 35 and the output sleeve 34, rotates the second driving shaft rod 25, moves the third sliding block 31 and the input sleeve 33 towards the output sleeve 34, the elastic element 36 in the stretched state gradually changes to the free state, the limiting assembly 30 changes from the initial state to the limiting state, the plurality of limiting sleeves 35 changes from the character type to the broken line shape, through the cooperation of the plurality of limiting sleeves 35 distributed in the broken line shape, the stomach tube is limited, the insertion depth of the stomach tube is prevented from changing, after the stomach is washed, the first driving shaft rod 21 is reversely rotated, the supporting driving assembly 20 changes from the limiting state to the initial state, the limiting of the teeth by the upper supporting unit and the lower supporting unit is released, the device and the stomach tube are taken out, and the stomach washing operation of the child patient can be completed.

[0037] The above is only the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, can make several improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as no special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A safety gastric lavage device for children, characterized in that: The utility model provides a gastric tube fixing device, including first base (10) and second base (11), second base (11) is fixed to one side of first base (10), both sides of first base (10) are rotatably connected with first support arm (12) and second support arm (13) respectively, both sides of second base (11) are rotatably connected with third support arm (14) and fourth support arm (15) respectively, and first connecting rod (16) is fixed between first support arm (12) and third support arm (14), second connecting rod (17) is fixed between second support arm (13) and fourth support arm (15), first support arm (12), third support arm (14) and first connecting rod (16) jointly constitute upper support unit, second support arm (13), fourth support arm (15) and second connecting rod (17) jointly constitute lower support unit, the upper end of first support arm (12) and third support arm (14) and the lower end of second support arm (13) and fourth support arm (15) are all provided with tooth slot, support drive assembly (20) is assembled between upper support unit and lower support unit, support drive assembly (20) includes first drive shaft rod (21), first sliding block (22), first transmission rod (23) and second transmission rod (24), one end of first drive shaft rod (21) is rotatably connected with second base (11), first sliding block (22) is screw connected on the outside of first drive shaft rod (21), first transmission rod (23) is rotatably connected with the upper end of first sliding block (22), second transmission rod (24) is rotatably connected with the lower end of first sliding block (22), and first transmission rod (23) and third support arm (14) and second transmission rod (24) and fourth support arm (15) are rotatably connected between them; Limiting assembly (30) is assembled between upper support unit and lower support unit, and support drive assembly (20) and limiting assembly (30) are connected, limiting assembly (30) is configured to be able to form limiting to gastric tube; Wherein, rotating first drive shaft rod (21) drives first sliding block (22) to move, and the included angle between third support arm (14) and fourth support arm (15) can be adjusted and limiting is formed through first transmission rod (23) and second transmission rod (24).

2. A safety gastric lavage device for children according to claim 1, characterized in that: The support driving assembly (20) further comprises a second driving shaft rod (25), a second sliding block (26), a third transmission rod (27) and a fourth transmission rod (28), one end of the second driving shaft rod (25) is rotationally connected to the first base (10), the second driving shaft rod (25) is connected with the limiting assembly (30), the second sliding block (26) is slidingly connected to the outer side of the second driving shaft rod (25), the third transmission rod (27) is rotationally connected to the upper end of the second sliding block (26), the fourth transmission rod (28) is rotationally connected to the lower end of the second sliding block (26), and the third transmission rod (27) and the first support arm (12) and the fourth transmission rod (28) and the second support arm (13) are rotationally connected, wherein the second driving shaft rod (25) is configured to drive the limiting assembly (30) to transform between the initial state and the limiting state.

3. A safety gastric lavage device for children as claimed in claim 2 wherein: The first support arm (12), the second support arm (13), the third support arm (14) and the fourth support arm (15) are internally provided with an avoiding groove (18), and the first driving shaft rod (21) and the second driving shaft rod (25) are provided with a handle at the end away from the first base (10), and the outer side of the handle is provided with an anti-skid pattern.

4. The safety gastric lavage device for children according to claim 1, characterized in that: The limiting assembly (30) comprises a third sliding block (31), a fourth sliding block (32), an input sleeve (33) and an output sleeve (34), the third sliding block (31) is threadedly connected to the outer side of the second driving shaft rod (25), the fourth sliding block (32) is slidingly connected to the outer side of the first driving shaft rod (21), the input sleeve (33) is fixed between the third sliding block (31) and the fourth sliding block (32), the output sleeve (34) is fixed between the first base (10) and the second base (11), a plurality of limiting sleeves (35) are assembled between the input sleeve (33) and the output sleeve (34), the plurality of limiting sleeves (35) are sequentially arranged between the input sleeve (33) and the output sleeve (34), an elastic element (36) is fixed between the input sleeve (33) and the nearest limiting sleeve (35), the output sleeve (34) and the nearest limiting sleeve (35), and the adjacent two limiting sleeves (35), and the adjacent two elastic elements (36) are alternately arranged in the vertical direction, wherein when the limiting assembly (30) is transformed from the initial state to the limiting state, the plurality of limiting sleeves (35) are in a broken line shape.

5. A safety gastric lavage device for children as claimed in claim 4 wherein: The broken line shape is any one of the following shapes: V-shaped, W-shaped, M-shaped.

6. A safety gastric lavage device for children as claimed in claim 4 wherein: In the free state, the cross-sectional shape of the elastic element (36) in the vertical cross-section is V-shaped.

7. A safety gastric lavage device for children as claimed in claim 4 wherein: Arc-shaped avoiding surfaces (37) are formed at the ends of the input sleeve (33), the output sleeve (34) and the limiting sleeve (35) which are close to each other.

8. A safety gastric lavage device for children as claimed in claim 4 wherein: Anti-skid bushings are fixed in the input sleeve (33), the output sleeve (34) and the limiting sleeve (35), and the inner walls of the anti-skid bushings are uniformly provided with a plurality of anti-skid patterns.

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