Sputum suction device for department of pediatrics

Abstract

The sputum suction device comprises a base and an outer cover fixedly installed at the upper end of the base, a sputum suction pipe is connected to the outer cover, and a negative pressure mechanism is further inserted into the upper end of the outer cover in a penetrating mode; the device further comprises a connecting mechanism and a pressing mechanism, the connecting mechanism comprises a sleeve connected with the base in a penetrating mode and a limiting plate fixedly installed at the lower end of the sleeve, the limiting plate is arranged in an outer cover, and a corrugated pipe is jointly connected between the outer cover and the limiting plate. The pressing mechanism comprises a pressing plate arranged at the upper end of the sleeve, a through pipe fixedly installed at the lower end of the pressing plate and an insertion ring body fixedly installed at the lower end of the pressing plate, the through pipe is connected with the sleeve in a penetrating mode, and the insertion ring body is matched with the open groove. According to the sputum suction device for the pediatric department, the sputum suction pipe, the sleeve and the through pipe can be folded, the sputum suction pipe is detachable, operation is easy, storage and unfolding are convenient, the whole device is located in the outer cover after cleaning and sterilization, pollution is reduced, and the sputum suction device has leakproofness and is high in integrity and convenient to use for the second time.

Description

Technical Field

[0001] This invention relates to the field of pediatric treatment equipment, specifically a pediatric suction device. Background Technology

[0002] Pediatrics is a comprehensive medical science that studies the physical and mental development, health care, and disease prevention of children. All health and hygiene issues involving children and adolescents fall under the scope of pediatrics. Its patients are in the growth and development period. When treating patients, pediatrics uses suction devices, which are mainly used for routine suctioning, tracheotomy, and other procedures.

[0003] For example, a user-friendly pediatric suction device for treatment, disclosed in CN202210967844.8, includes a collection cylinder. A suction component is located on one side of the upper part of the collection cylinder, and a stop is located on the outside of the collection cylinder below the suction component. A limiting rod is connected to one side of the stop, and an adjusting cylinder is connected to one end of the limiting rod. A connecting cylinder, communicating with the inside of the collection cylinder, is located at the upper end of the connecting cylinder. An air suction tube is embedded in the upper end of the connecting cylinder, and the other end of the air suction tube is located inside the upper end of the adjusting cylinder. An anti-backflow component is located inside the upper part of the connecting cylinder. A cleaning component is located inside the collection cylinder. The suction tube is detached from the connecting sleeve, and water is introduced into the connecting sleeve to enter the collection cylinder. Then, utilizing the reset property of the spring rope, pulling the rope allows the cleaning wipe on the annular sleeve to wipe and clean the inner wall of the collection cylinder. This is convenient, quick, and allows for repeated use.

[0004] While the aforementioned patents allow for the disassembly of the suction tube and cleaning of the collection cylinder, the device is relatively disassembled and not easily folded for storage and use. After cleaning, the suction tube is exposed outside the device and is more susceptible to contamination. Therefore, we propose a pediatric suction device to address the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a pediatric suction device to solve the problems mentioned in the background art, such as the device being relatively scattered, difficult to fold and store, and the suction tube being exposed outside the device after cleaning, making it more susceptible to contamination.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pediatric suction device, comprising a base and an outer cover fixedly installed on the upper end of the base, wherein a suction tube is connected to the outer cover, and a negative pressure mechanism is inserted through the upper end of the outer cover;

[0007] Also includes:

[0008] An opening slot is formed at the upper end of the outer cover;

[0009] A connecting mechanism, comprising a sleeve that is inserted into the base and a limiting plate fixedly installed at the lower end of the sleeve, the limiting plate being disposed inside the outer cover, and a corrugated pipe being connected between the outer cover and the limiting plate;

[0010] The pressing mechanism includes a pressing plate disposed on the upper end of the sleeve, a through pipe fixedly installed on the lower end of the pressing plate, and a plug-in ring fixedly installed on the lower end of the pressing plate. The through pipe is inserted and connected to the sleeve, and the plug-in ring is adapted to the opening groove.

[0011] By adopting the above technical solution, one end of the suction tube is inserted into the limiting plate, and the base and outer cover are combined to form a sealed space. Under the action of the negative pressure mechanism, suction is generated inside the outer cover, and the suction tube generates suction. One end of the suction tube is inserted into the patient's mouth, and the patient's sputum is sucked into the outer cover by the suction tube. The suction tube is wrapped around the sleeve, and its length is relatively long. The suction tube can be placed at any angle. This device can be placed on one side to ensure the stability of the device. The suction tube of this device is detachable, and the whole device is easy to store and unfold. After cleaning and sterilization, the whole device is located inside the outer cover, which reduces contamination. It has airtightness, strong integrity, and is easy to reuse.

[0012] Preferably, a spiral groove is formed on the outer wall of the sleeve, the suction tube is wound around the spiral groove, and a straight spring is also provided on the outer periphery of the sleeve, with the two ends of the straight spring being fixedly connected to the outer cover and the limiting plate, respectively.

[0013] By adopting the above technical solution, the spiral groove facilitates the clamping of the suction tube, making it less prone to bending and blockage. The straight spring increases the elasticity of the bellows, making it easier for the device to fold and reset.

[0014] Preferably, the sleeve is rotatably connected to the through pipe, and a bearing is rotatably mounted between the sleeve and the through pipe. A spring is also rotatably mounted between the sleeve and the through pipe.

[0015] By adopting the above technical solution, the suction tube is wound in the sleeve. By setting bearings and springs, the sleeve can rotate about the tube when the suction tube is loosened. When rotating, the spring deforms until the suction tube is taken out from the limiting plate. After loosening, the spring can drive the sleeve to return to its original position, which makes it easy to store the suction tube. If it is necessary to extend the suction tube, simply rotate the suction tube in the opposite direction about the sleeve.

[0016] Preferably, the negative pressure mechanism includes a connecting sleeve disposed on the pressing plate and a negative pressure pipe fixedly installed at the lower end of the connecting sleeve. The negative pressure pipe is disposed inside the through pipe, and a connecting ring is fixedly installed at the lower end of the negative pressure pipe. The connecting ring is fixedly installed at the lower end of the through pipe.

[0017] By adopting the above technical solution, a negative pressure machine is connected to the negative pressure pipeline. The power of the negative pressure machine causes the negative pressure pipeline to generate suction, that is, suction can be generated in the outer casing. Through the cooperation between the connecting sleeve, the negative pressure pipeline, and the connecting ring, the device has integrity.

[0018] Preferably, the connecting sleeve and the negative pressure pipe are connected by an inner pipe, and a rubber pad is provided at the lower end of the inner pipe.

[0019] By adopting the above technical solution, an inner pipe is installed, in which cleaning liquid can be placed. A rubber pad seals the lower end of the inner pipe to prevent liquid leakage.

[0020] Preferably, a storage cylinder is fixedly installed at the upper end of the base, the storage cylinder is located inside the outer cover, a crossbar is provided inside the storage cylinder, a conical spike is fixedly installed at the middle of the upper end of the crossbar, and the conical spike is located at the lower end of the rubber pad.

[0021] By adopting the above technical solution, pressing down on the pressing plate until the conical puncture pierces the rubber pad, the liquid flows into the outer cover and vibrates the device, thus cleaning the outer cover.

[0022] Preferably, the lower end of the suction tube is inserted and connected to the limiting plate, the lower end of the suction tube is also fitted with a limiting block, the upper end of the suction tube is connected to an air bladder, and the outer wall of the air bladder is provided with a through hole.

[0023] By adopting the above technical solution, one end of the suction tube is located inside the air bladder. By setting the air bladder, it is possible to prevent the suction force of the suction tube from being too strong and causing damage to the oral mucosa, thus providing good protection. By setting the through hole, it is easy to ensure the smooth suction force of the suction tube.

[0024] Preferably, a limiting member and an occlusive block are slidably installed on the outer periphery of the suction tube, and one end of the limiting member is fixedly connected to the occlusive block.

[0025] By adopting the above technical solution, the limiting component and the biting block are bitten by the patient, which can prevent the patient from biting the suction tube tightly or breaking it, thus providing fixation and protection.

[0026] Preferably, the airbag is further provided with a support mechanism, which includes a connecting rod rotatably mounted on the outer periphery of the suction tube and a pulley rotatably mounted on the outer end of the connecting rod. The pulley is also slidably connected to the inner wall of the airbag, and the connecting rod and the outer periphery of the suction tube are connected together to an elastic sheet.

[0027] By adopting the above technical solution, when the suction tube is inserted into the oral cavity, its suction force moves the connecting rod towards the suction port of the suction tube. The two connecting rods gradually unfold and expand the air bladder, which facilitates the fixation of the suction tube and further increases the fixation effect of the device.

[0028] Compared with the prior art, the beneficial effects of the present invention are: the suction tube, sleeve and cannula of the device are all foldable, the suction tube is detachable, the operation is simple, and it is easy to store and unfold. After cleaning and sterilization, the whole device is located inside the outer cover, which reduces pollution. It has airtightness, strong integrity, and is easy to reuse. The specific contents are as follows.

[0029] 1. One end of the suction tube is inserted into the patient's mouth. Under the action of the negative pressure mechanism, the suction tube generates suction, which draws the sputum from the patient's mouth into the outer cover and collects it. After use, pull out the suction tube, and rotate the sleeve around the tube until the suction tube is removed from the outer cover. Clean and sterilize the device, and reinstall a new suction tube. At this time, press down on the pressing plate to move the tube and sleeve downward. The corrugated tube will then elongate until the insertion ring is engaged in the opening groove, and the suction tube is located in the outer cover. The entire device becomes smaller, less prone to internal contamination, and easier to store. When reusing, pull out the pressing plate upward. Under the action of the corrugated tube, the sleeve and tube spring back, increasing the internal space of the outer cover, and the device can be reused. It has a strong overall integrity.

[0030] 2. The sleeve can rotate around the tube. When rotating, the spring deforms until the suction tube is removed from the limiting plate. After releasing, the spring can drive the sleeve to return to its original position, making it easy to store the suction tube. The inner tube is equipped with a cleaning liquid that can be placed inside. Pressing down on the pressing plate moves the tube and the negative pressure tube and inner tube downwards until the conical puncture punctures the rubber pad. The liquid flows into the outer cover, sealing the opening at the top of the inner tube. Vibrating the device cleans the outer cover. After the device returns to its original position, the rubber pad has elasticity and sealing properties, allowing the lower end of the inner tube to be resealed for reuse. Repeating the pressing operation after cleaning allows the device to be stored away.

[0031] 3. The air bladder prevents excessive suction from damaging the oral mucosa, providing excellent protection. The through-hole ensures smooth suction. The limiting element and bite block, when bitten by the patient, prevent the patient from biting down on or breaking the suction tube, providing both stability and protection. When the suction force moves the connecting rods towards the suction port, the angle between the two connecting rods increases, gradually unfolding. The pulley slides around the air bladder, increasing its diameter. The air bladder rubs against the oral cavity or airway opening, facilitating the fixation of the suction tube. Combined with the limiting element and bite block, this further enhances the device's stability, resulting in excellent performance. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a perspective cross-sectional view of the present invention;

[0034] Figure 3 This is an overall sectional plan view of the present invention;

[0035] Figure 4 This is an exploded view of the connecting mechanism, pressing mechanism, and negative pressure mechanism of the present invention;

[0036] Figure 5 This is a schematic diagram of the connection mechanism structure of the present invention;

[0037] Figure 6 This is a schematic diagram of the pressing mechanism of the present invention;

[0038] Figure 7 This is a schematic diagram of the negative pressure mechanism of the present invention;

[0039] Figure 8 This is a schematic diagram of the suction tube structure of the present invention;

[0040] Figure 9 This is a cross-sectional view of the airbag of the present invention.

[0041] In the diagram: 1. Base; 11. Storage cylinder; 12. Crossbar; 13. Conical spike; 14. Opening groove; 2. Outer cover; 3. Connecting mechanism; 31. Sleeve; 32. Limiting plate; 33. Corrugated pipe; 34. Spiral groove; 35. Straight spring; 4. Pressing mechanism; 41. Pressing plate; 42. Through pipe; 43. Insertion ring; 44. Bearing; 45. Clockwork spring; 5. Negative pressure mechanism; 51. Connecting sleeve; 52. Negative pressure pipe; 53. Connecting ring; 54. Inner pipe; 55. Rubber pad; 6. Suction tube; 61. Limiting block; 62. Airbag; 63. Through hole; 7. Limiting component; 71. Engaging block; 8. Supporting mechanism; 81. Connecting rod; 82. Pulley; 83. Elastic sheet. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1: Please refer to Figure 1-6The present invention provides a technical solution: a pediatric suction device, comprising a base 1 and an outer cover 2 fixedly installed on the upper end of the base 1, a suction tube 6 connected to the outer cover 2, and a negative pressure mechanism 5 inserted through the upper end of the outer cover 2; it also includes an opening groove 14, a connecting mechanism 3 and a pressing mechanism 4. The opening groove 14 is opened at the upper end of the outer cover 2. The connecting mechanism 3 includes a sleeve 31 inserted through the base 1 and a limiting plate 32 fixedly installed at the lower end of the sleeve 31. The limiting plate 32 is disposed inside the outer cover 2. A corrugated pipe 33 is connected between the outer cover 2 and the limiting plate 32. The pressing mechanism 4 includes a pressing plate 41 disposed at the upper end of the sleeve 31, a through pipe 42 fixedly installed at the lower end of the pressing plate 41 and a plug-in ring 43 fixedly installed at the lower end of the pressing plate 41. The through pipe 42 is inserted through the sleeve 31, and the plug-in ring 43 is adapted to the opening groove 14.

[0044] In the initial state, the bellows 33 is in a compressed state, one end of the sleeve 31 is located at the upper end of the outer cover 2, and the suction tube 6 is wound around the sleeve 31. Its length is relatively long, and the suction tube 6 can be placed at any angle. This device can be placed on one side to ensure the stability of the device.

[0045] One end of the suction tube 6 is inserted into the limiting plate 32. The base 1, outer cover 2, corrugated tube 33 and limiting plate 32 are combined to form a closed space. One end of the suction tube 6 is inserted into the patient's mouth. The negative pressure mechanism 5 is located in the tube 42. Under the action of the negative pressure mechanism 5, suction is generated in the outer cover 2. The suction tube 6 generates suction, which can draw the sputum in the patient's mouth into the outer cover 2 and collect it.

[0046] After use, pull out the suction tube 6, and rotate the sleeve 31 around the tube 42 until the suction tube 6 is removed from the outer cover 2. Clean and sterilize the device, and reinstall the new suction tube 6. At this time, press down on the pressing plate 41 to make the tube 42 and sleeve 31 move downward. At this time, the corrugated tube 33 is stretched until the insertion ring 43 is engaged in the opening groove 14. The suction tube 6 is located in the outer cover 2, the entire device becomes smaller, the interior is less likely to be contaminated, and it is easy to store. When reusing, pull out the pressing plate 41 upward. Under the action of the corrugated tube 33, the sleeve 31 and tube 42 spring back, the internal space of the outer cover 2 becomes larger, and the device can be reused. It has a strong overall integrity.

[0047] Example 2: Please refer to Figure 1-7 The outer wall of the sleeve 31 is provided with a spiral groove 34, and the suction tube 6 is wound around the spiral groove 34. A straight spring 35 is also provided on the outer periphery of the sleeve 31, and the two ends of the straight spring 35 are fixedly connected to the outer cover 2 and the limiting plate 32 respectively.

[0048] By setting the spiral groove 34, it is easy to snap the suction tube 6, making the suction tube 6 less prone to bending and blockage. By setting the straight spring 35, the elasticity of the bellows 33 is increased, making it easier to fold and reset the device.

[0049] Sleeve 31 is rotatably connected to pipe 42. A bearing 44 is rotatably mounted between sleeve 31 and pipe 42. A spring 45 is also rotatably mounted between sleeve 31 and pipe 42.

[0050] The suction tube 6 is wound in the sleeve 31. By setting the bearing 44 and the spring 45, the suction tube 6 is loosened, and the sleeve 31 can rotate about the tube 42. When rotating, the spring 45 deforms until the suction tube 6 is taken out from the limiting plate 32. After being released, the spring 45 can drive the sleeve 31 to return to its original position, which makes it easy to store the suction tube 6. If it is necessary to extend the suction tube 6, the suction tube 6 can be rotated in the opposite direction about the sleeve 31.

[0051] The negative pressure mechanism 5 includes a connecting sleeve 51 disposed on the pressing plate 41 and a negative pressure pipe 52 fixedly installed at the lower end of the connecting sleeve 51. The negative pressure pipe 52 is disposed inside the through pipe 42, and a connecting ring 53 is fixedly installed at the lower end of the negative pressure pipe 52. The connecting ring 53 is fixedly installed at the lower end of the through pipe 42.

[0052] The negative pressure pipe 52 is connected to a negative pressure machine. The power of the negative pressure machine causes the negative pressure pipe 52 to generate suction, that is, suction can be generated in the outer cover 2. Through the cooperation between the connecting sleeve 51, the negative pressure pipe 52 and the connecting ring 53, the device has integrity.

[0053] An inner pipe 54 is connected to the connecting sleeve 51 and the negative pressure pipe 52. A rubber pad 55 is installed at the lower end of the inner pipe 54.

[0054] An inner pipe 54 is provided, in which cleaning liquid can be placed. A rubber pad 55 seals the lower end of the inner pipe 54 to prevent liquid leakage.

[0055] A storage cylinder 11 is fixedly installed on the upper end of the base 1. The storage cylinder 11 is located inside the outer cover 2. The base 1 and the storage cylinder 11 are an integral structure and are detachable from the outer cover 2. The sputum sucked in by the suction tube 6 is stored in the storage cylinder 11, which is easy to disassemble and clean. A crossbar 12 is provided inside the storage cylinder 11. A conical spike 13 is fixedly installed in the middle of the upper end of the crossbar 12. The conical spike 13 is located at the lower end of the rubber pad 55.

[0056] The conical spike 13 has a tree-like structure with a larger diameter at the top than at the bottom. When the pressing plate 41 is pressed down, the through pipe 42 drives the negative pressure pipe 52 and the inner pipe 54 downwards until the conical spike 13 punctures the rubber pad 55. The liquid flows into the outer cover 2, sealing the opening at the top of the inner pipe 54. This vibrates the device, which cleans the outer cover 2. After the device is reset, the rubber pad 55 has resilience and sealing properties, and can reseal the bottom of the inner pipe 54 for reuse.

[0057] Example 3: Please refer to 1-3. Figure 7-9 The lower end of the suction tube 6 is inserted and connected to the limiting plate 32. The lower end of the suction tube 6 is also fitted with a limiting block 61. The limiting block 61 and the suction tube 6 are detachably connected. When the suction tube 6 is installed, the limiting block 61 is in the removed state. After installation, the limiting block 61 is installed again to prevent the suction tube 6 from being pulled out as a whole when it is pulled. After suctioning is completed, the suction tube 6 is pulled outward, and the limiting block 61 separates from the suction tube 6 and falls into the storage cylinder 11, which is convenient for operation and use.

[0058] The upper end of the suction tube 6 is connected to an air bladder 62. An opening 63 is provided on the outer wall of the air bladder 62. One end of the suction tube 6 is located inside the air bladder 62. By setting the air bladder 62, the suction force of the suction tube 6 can be prevented from being too strong and causing damage to the oral mucosa, thus providing good protection. The opening 63 facilitates the smooth suction of the suction tube 6.

[0059] A limiting element 7 and an occlusive block 71 are also slidably installed on the outer periphery of the suction tube 6, with one end of the limiting element 7 being fixedly connected to the occlusive block 71.

[0060] The limiting member 7 and the biting block 71 slide around the outer periphery of the suction tube 6. When the two slide, they are bitten by the patient during use, which can prevent the patient from biting the suction tube 6 tightly or breaking it, thus providing fixation and protection.

[0061] The airbag 62 is also provided with a support mechanism 8. The support mechanism 8 includes a connecting rod 81 rotatably mounted on the outer periphery of the suction tube 6 and a pulley 82 rotatably mounted on the outer end of the connecting rod 81. The pulley 82 is also slidably connected to the inner wall of the airbag 62. The connecting rod 81 and the outer periphery of the suction tube 6 are connected together to an elastic sheet 83.

[0062] In the initial state, the angle between the two connecting rods 81 is less than 180 degrees, and the diameter of the air bladder 62 is small, making it easy to pass through the oral cavity. When the suction tube 6 is inserted into the oral cavity and generates suction, the suction force moves the connecting rods 81 toward the suction port of the suction tube 6, the angle between the two connecting rods 81 increases, and they gradually unfold. The pulley 82 slides about the air bladder 62, making the diameter of the air bladder 62 larger. The air bladder 62 rubs against the oral cavity or airway opening, which facilitates the fixation of the suction tube 6. With the help of the limiting member 7 and the biting block 71, the fixation effect of this device is further increased, resulting in good performance.

[0063] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0064] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pediatric suction device, comprising a base (1) and an outer cover (2) fixedly installed on the upper end of the base (1), wherein a suction tube (6) is connected to the outer cover (2), and a negative pressure mechanism (5) is inserted through the upper end of the outer cover (2); characterized in that Also includes: An opening groove (14) is formed on the upper end of the outer cover (2); The connecting mechanism (3) includes a sleeve (31) that is inserted into the base (1) and a limiting plate (32) that is fixedly installed at the lower end of the sleeve (31). The limiting plate (32) is disposed inside the outer cover (2). A corrugated pipe (33) is connected between the outer cover (2) and the limiting plate (32). The pressing mechanism (4) includes a pressing plate (41) disposed on the upper end of the sleeve (31), a through pipe (42) fixedly installed on the lower end of the pressing plate (41), and a plug-in ring (43) fixedly installed on the lower end of the pressing plate (41). The through pipe (42) is inserted and connected to the sleeve (31), and the plug-in ring (43) is adapted to the opening groove (14).

2. A sputum suction device for pediatric use as claimed in claim 1, wherein: The sleeve (31) has a spiral groove (34) on its outer wall. The suction tube (6) is wound around the spiral groove (34). A straight spring (35) is also provided on the outer periphery of the sleeve (31). The two ends of the straight spring (35) are fixedly connected to the outer cover (2) and the limiting plate (32) respectively.

3. A pediatric suction device according to claim 2, characterized in that: The sleeve (31) is rotatably connected to the through pipe (42), and a bearing (44) is rotatably installed between the sleeve (31) and the through pipe (42). A spring (45) is also rotatably installed between the sleeve (31) and the through pipe (42).

4. A pediatric suction device according to claim 3, characterized in that: The negative pressure mechanism (5) includes a connecting sleeve (51) disposed on the pressing plate (41) and a negative pressure pipe (52) fixedly installed at the lower end of the connecting sleeve (51). The negative pressure pipe (52) is disposed inside the through pipe (42). A connecting ring (53) is fixedly installed at the lower end of the negative pressure pipe (52). The connecting ring (53) is fixedly installed at the lower end of the through pipe (42).

5. A pediatric suction device according to claim 4, characterized in that: The connecting sleeve (51) and the negative pressure pipe (52) are connected by an inner pipe (54), and a rubber pad (55) is provided at the lower end of the inner pipe (54).

6. A pediatric suction device according to claim 4, characterized in that: A storage cylinder (11) is fixedly installed on the upper end of the base (1). The storage cylinder (11) is located inside the outer cover (2). A crossbar (12) is provided inside the storage cylinder (11). A conical spike (13) is fixedly installed in the middle of the upper end of the crossbar (12). The conical spike (13) is located at the lower end of the rubber pad (55).

7. A pediatric suction device according to claim 4, characterized in that: The lower end of the suction tube (6) is inserted and connected to the limiting plate (32). The lower end of the suction tube (6) is also fitted with a limiting block (61). The upper end of the suction tube (6) is connected to an air bag (62). A through hole (63) is opened on the outer wall of the air bag (62).

8. A pediatric suction device according to claim 4, characterized in that: The suction tube (6) is also slidably installed with a limiting member (7) and a biting block (71) on its outer periphery, and one end of the limiting member (7) is fixedly connected to the biting block (71).

9. A pediatric suction device according to claim 4, characterized in that: The airbag (62) is also provided with a support mechanism (8). The support mechanism (8) includes a connecting rod (81) rotatably mounted on the outer periphery of the suction tube (6) and a pulley (82) rotatably mounted on the outer end of the connecting rod (81). The pulley (82) is also slidably connected to the inner wall of the airbag (62). The connecting rod (81) and the outer periphery of the suction tube (6) are connected together with an elastic sheet (83).

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