Pediatric negative pressure gastric lavage device for pediatric nursing

Abstract

The invention relates to a pediatric negative-pressure gastric lavage device for pediatric nursing, which comprises a negative-pressure gastric lavage machine, an infusion tube, an insertion tube, a one-way valve assembly, a mask assembly, an occluder and a clamping piece, one end of the infusion tube is connected with an infusion port of the negative-pressure gastric lavage machine, and the insertion tube is connected with the infusion tube through the one-way valve assembly; the one-way valve assembly is slidably arranged outside the one-way valve assembly in a sleeving mode, a sleeving relation is formed between the interior of the occluder and the front end of the insertion tube, clamping pieces are arranged at the rear end of the occluder in an up-down symmetry mode, and the clamping pieces and the mask assembly can be temporarily connected in a clamped mode. The problems that liquid accidentally conveyed in advance from a stomach inserting tube cannot be emergently treated, so that the liquid enters the stomach in advance to cause safety accidents, and due to the fact that the self-control force of children is insufficient compared with that of adults, gastric juice or gastric lavage liquid often flows back from the oral cavity in the gastric lavage process and enters the nasal cavity to cause respiratory obstruction of the children are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of negative pressure gastric lavage, and particularly relates to a pediatric negative pressure gastric lavage device for pediatric nursing. Background Art

[0002] Gastric lavage refers to pouring a certain component of liquid into the gastric cavity, mixing the gastric contents and then pumping them out. This is repeated many times. The purpose is to remove the undigested poisons in the stomach or clean the gastric cavity. Clinically, it is used for the preparation before gastric surgery and examination. For acute poisoning such as swallowing organophosphorus, inorganic phosphorus, alkaloids, and barbiturates in a short time, gastric lavage is an important rescue measure. The gastric tube lavage technique is to insert the gastric tube from the mouth, pass through the esophagus and reach the stomach, first suck out the poison and then inject the lavage fluid, and discharge the gastric contents to achieve the purpose of removing the poison. Patients who have taken oral poisons should insert a gastric tube for gastric lavage as soon as possible when conditions permit, without being restricted by time. For those who have taken a large amount of poison within 4 to 6 hours, because the detoxification effect is good and the complications are relatively few, this gastric lavage method should be preferred. At present, when medical staff perform gastric lavage treatment on pediatric patients, they need to thoroughly clean the stomach through a gastric tube, remove the gastric contents or irritants, and prevent the absorption of poisons. After gastric lavage, the gastric lavage tank and the waste liquid tank need to be thoroughly cleaned for reuse.

[0003] Negative pressure suction gastric lavage is usually applicable to children over 3 years old. The liquid is poured into the stomach through a gastric lavage machine for gastric lavage. The existing gastric tube is a straight-through structure, and it is impossible to perform emergency treatment on some liquids that are accidentally transported in advance through the gastric tube, resulting in the liquid entering the stomach in advance and causing safety accidents. Moreover, due to the lack of self-control of children compared with adults, gastric juice or lavage fluid often flows back from the mouth during gastric lavage, causing the problem of respiratory obstruction in children when it enters the nasal cavity.

[0004] Based on this, there is still room for improvement on the basis of the existing pediatric negative pressure gastric lavage device. Summary of the Invention

[0005] The purpose of the present invention is to provide a pediatric negative pressure gastric lavage device for pediatric nursing to solve the deficiencies in the above-mentioned existing technologies.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A pediatric negative pressure gastric lavage device for pediatric nursing, comprising a negative pressure gastric lavage machine; an infusion tube, one end of which is connected to the infusion port of the negative pressure gastric lavage machine; an insertion tube, which is connected to the infusion tube through a one-way valve assembly; a mask assembly, which is slidably sleeved outside the one-way valve assembly; a bite block, the inside of which forms a sleeved relationship with the front end of the insertion tube, and clamping members are symmetrically arranged up and down at the rear end of the bite block, and the clamping members can be temporarily clamped with the mask assembly.

[0007] As a preferred technical solution of the present invention, the one-way valve assembly includes an inner cylinder, the rear end of which is connected to the front end of the infusion tube, and a valve core unit is arranged inside the inner cylinder; an outer cylinder, the front end of which is connected to the rear end of the insertion tube, and an inner sleeve and outer sleeve relationship is formed between the inner cylinder and the outer cylinder; a sliding frame, which is slidably arranged outside the outer cylinder, and limiting units are symmetrically arranged at the upper and lower ends inside the sliding frame, and the limiting units cooperate with the valve core unit; a locking unit, which temporarily locks the positions between the inner cylinder and the outer cylinder.

[0008] As a preferred technical solution of the present invention, the valve core unit includes a fixing frame, which is fixedly installed in the inner cavity of the inner cylinder, and the middle part of the inner cavity is a reduced diameter structure from front to back; a valve core, which is horizontally slidably arranged on the fixing frame, and the valve core at the rearmost position blocks the middle part of the inner cavity.

[0009] As a preferred technical solution of the present invention, the limiting unit includes a limiting piece, which is slidably arranged in a sliding groove opened on the side wall of the outer cylinder, and separating grooves are symmetrically opened at the front and rear ends of the sliding groove. A partition plate is installed in the middle of the limiting piece, and the partition plate is located between the separating grooves. The outer end of the limiting piece is fixedly connected to the sliding frame, and the inner end of the limiting piece is temporarily clamped in a clamping groove opened on the valve core.

[0010] As a preferred technical solution of the present invention, the locking unit includes a connecting sleeve, which is fixedly installed on the outer cylinder, and an unlocking piece is slidably arranged up and down inside the connecting sleeve; a clamping buckle, which is slidably arranged up and down in a hidden groove opened on the inner cylinder, and the clamping buckle is elastically connected to the hidden groove. The upper end of the clamping buckle is temporarily clamped in a clamping buckle groove opened on the outer cylinder, and the lower end of the unlocking piece is located in the clamping buckle groove.

[0011] As a preferred technical solution of the present invention, the mask assembly includes a sliding sleeve, which is slidably arranged outside the insertion tube, and a clamping ring groove is opened at the front end of the sliding sleeve; a pressing unit, which is arranged in an inner cavity opened on the sliding sleeve, and the pressing unit is used to press the insertion tube to hinder liquid delivery; a mask, which is installed outside the sliding sleeve; a square sleeve, which is slidably arranged at the front end of the outer cylinder, and the sliding sleeve is rotatably arranged at the front end of the square sleeve.

[0012] As a preferred technical solution of the present invention, the clamping ring groove is composed of an annular groove and an inlet. The upper and lower ends of the annular groove are symmetrically communicated with the inlet, and the position of the clamping piece corresponds to the clamping ring groove.

[0013] As a preferred technical solution of the present invention, the pressing unit includes a threaded piece, which is in threaded fit connection in a threaded cylinder, and the threaded cylinder is installed in the middle of a connection groove opened on the sliding sleeve; a square block, the upper end of which is in rotational fit connection with the lower end of the threaded piece, and the square block is slidably arranged up and down at the lower end of the connection groove. A pressing column is rotatably sleeved at the lower end of the square block.

[0014] As a preferred technical solution of the present invention, the occluder includes occluding members, and the occluding members arranged up and down are connected by a connecting member. A sleeve member is connected between the middle parts of the occluding members by a pin shaft. The sleeve member is slidably sleeved outside the insertion tube, and a clamping member is fixedly installed at the rear end of the occluding member.

[0015] In summary, the present application includes the following beneficial technical effects: For the pediatric negative pressure gastric lavage device for pediatric nursing described in the present invention, the present application prevents the liquid from entering the tube in advance and the reflux of the liquid medium during the gastric lavage process by setting a one-way valve assembly, and avoids the situation that the gastric juice refluxing from the oral cavity enters the nasal cavity and causes respiratory obstruction through the composition of the mask assembly and the occluder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the structural schematic diagram of the present invention; Figure 2 is the cross-sectional view among the infusion tube, the insertion tube, the one-way valve assembly, the mask assembly, the occluder, and the clamping member of the present invention; Figure 3 is the partial cross-sectional view of the one-way valve assembly and the mask assembly of the present invention; Figure 4 is the present invention Figure 1 partial enlarged view at X; Figure 5 is the present invention Figure 2 partial enlarged view at Y; Figure 6 is the present invention Figure 2 partial enlarged view at Z. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes the present application in detail Figures 1-6 with reference to the accompanying drawings.

[0018] The embodiment of the present application discloses a pediatric negative pressure gastric lavage device for pediatric nursing. The present application prevents the reflux of the liquid medium during the gastric lavage process by setting a one-way valve assembly, and avoids the situation that the gastric juice refluxing from the oral cavity enters the nasal cavity and causes respiratory obstruction through the composition of the mask assembly 5 and the occluder 6.

[0019] Refer to Figures 1 to 3As shown in the figure, a pediatric negative pressure gastric lavage device for pediatric nursing disclosed in this embodiment includes a negative pressure gastric lavage machine 1, an infusion tube 2, an insertion tube 3, a one-way valve assembly 4, a mask assembly 5, a bite block 6, and a clamping member 7. Based on the negative pressure gastric lavage machine 1, one end of the infusion tube 2 is connected to the infusion port of the negative pressure gastric lavage machine 1. The insertion tube 3 is connected to the infusion tube 2 through the one-way valve assembly 4. The mask assembly 5 is slidably sleeved outside the one-way valve assembly 4. The inside of the bite block 6 forms a sleeved relationship with the front end of the insertion tube 3. The clamping members 7 are symmetrically arranged up and down at the rear end of the bite block 6, and the clamping members 7 can be temporarily clamped with the mask assembly 5.

[0020] In the actual process, the bite block 6 is inserted into the child's mouth and bitten (to prevent the subsequent insertion tube 3 from being bitten flat). Subsequently, the mask assembly 5 is detached from the one-way valve assembly 4 (the one-way valve structure of the one-way valve assembly 4 is opened), and then moved along the infusion direction of the insertion tube 3 close to the bite block 6 and finally forms a clamped state through the clamping member 7. At this time, the mask assembly 5 covers the outside of the mouth. The insertion tube 3 is inserted into the patient's stomach as required (at this time, the infusion tube 2 and the insertion tube 3 are in a blocked state under the action of the one-way valve assembly 4), and it is confirmed that the position of the gastric tube is correct. The negative pressure gastric lavage machine 1 is connected, and the gastric lavage fluid is slowly injected into the stomach through the device, 200 - 300 milliliters each time. Subsequently, the gastric contents are pumped out through negative pressure, and it is observed whether the discharged liquid is clear. Repeat until the discharged liquid is not significantly contaminated. After the gastric lavage is completed, the gastric tube should be gently pulled out, and the patient's body position should be assisted to be adjusted.

[0021] Refer to Figures 2-3 As shown in the figure, in this application, the one-way valve assembly 4 controls the connection state of the connection between the infusion tube 2 and the insertion tube 3. When no liquid is being transported, this connection is in a blocked state. When liquid transportation is carried out later, this connection can conduct one-way transportation. When necessary, the one-way valve assembly 4 can be disassembled to separate the infusion tube 2 and the insertion tube 3, so that the liquid medium in the insertion tube 3 can be discharged. The specific structure of the one-way valve assembly 4 is as follows. The one-way valve assembly 4 includes an inner cylinder 41, a valve core unit 42, an outer cylinder 43, a sliding frame 44, a limiting unit 45, and a locking unit 46. The rear end of the inner cylinder 41 is connected to the front end of the infusion tube 2. The valve core unit 42 is arranged inside the inner cylinder 41. The front end of the outer cylinder 43 is connected to the rear end of the insertion tube 3. An inner and outer sleeved relationship is formed between the inner cylinder 41 and the outer cylinder 43. The sliding frame 44 is slidably arranged outside the outer cylinder 43. The limiting units 45 are symmetrically arranged at the upper and lower ends inside the sliding frame 44. The limiting units 45 cooperate with the valve core unit 42, and the locking unit 46 temporarily locks the positions between the inner cylinder 41 and the outer cylinder 43.

[0022] During the actual operation process, when the mask assembly 5 is sleeved on the outer cylinder 43, at this time, the sliding frame 44 is squeezed by the mask assembly 5 to make it in the rearmost position, and the limiting unit 45 connected to the sliding frame 44 locks the position of the valve core unit 42, so that the valve core unit 42 blocks the inside of the inner cylinder 41 to prevent the liquid from flowing, ensuring that the liquid will not flow out in advance before gastric lavage. When preparing for gastric lavage, after the bite block 6 is inserted into the child's mouth, the mask assembly 5 is slid out from the outer cylinder 43 and temporarily clamped and assembled with the bite block 6 to cover the outside of the mouth. At this time, there is no structure to squeeze the sliding frame 44, so that the limiting unit 45 loses the limiting effect. At this time, the position of the valve core unit 42 is unlocked, and the valve core unit 42 can move horizontally to play a role in one-way flow. If it is necessary to unlock the positions of the inner cylinder 41 and the outer cylinder 43, just press the locking unit 46 to unlock.

[0023] Refer to Figures 2-3 As shown, the valve core unit 42 includes a fixing frame 421 and a valve core 422. The fixing frame 421 is fixedly installed in the inner cavity of the inner cylinder 41. The middle part of the inner cavity is a necking structure from front to back. The valve core 422 is horizontally slidably arranged on the fixing frame 421, and the valve core 422 at the rearmost position blocks the middle part of the inner cavity.

[0024] Refer to Figures 2-3 As shown, the limiting unit 45 includes a limiting member 451. The limiting member 451 is slidably arranged in a sliding groove 452 opened on the side wall of the outer cylinder 43, and partition grooves are symmetrically opened at the front and rear ends of the sliding groove 452. A partition plate 453 is installed in the middle of the limiting member 451. The partition plate 453 is located between the partition grooves. The outer end of the limiting member 451 is fixedly connected to the sliding frame 44, and the inner end of the limiting member 451 is temporarily clamped in a clamping groove opened on the valve core 422.

[0025] During the actual operation process, when the mask assembly 5 is sleeved on the outer cylinder 43, at this time, the sliding frame 44 is squeezed by the mask assembly 5 to be in the rearmost side. The limiting member 451 connected to the sliding frame 44 locks the position of the valve core 422. The rearmost limiting member 451 squeezes the valve core 422 to the rearmost side through the clamping groove so that it fits against the arc-shaped wall in the middle of the inner cavity, thus playing a role in intercepting and blocking, and further preventing the liquid from flowing, ensuring that the liquid will not flow out in advance before gastric lavage. When preparing for gastric lavage, after the bite block 6 is inserted into the child's mouth, the mask assembly 5 is slid out from the outer cylinder 43 and temporarily clamped and assembled with the bite block 6 to cover the outside of the mouth. At this time, there is no structure to squeeze the sliding frame 44, so that the limiting member 451 loses the limiting effect. At this time, the position of the valve core 422 is unlocked, and the valve core 422 can move horizontally to play a role in one-way flow. When the liquid in the subsequent infusion tube 2 flushes into the inner cylinder 41, the valve core 422 can be impacted forward to move forward, and the liquid is smoothly transported through the gap between the valve core 422 and the inner cavity of the inner cylinder 41 (if the liquid flows back, it will be blocked by the valve core 422).

[0026] Refer to Figure 5 As shown, the locking unit 46 includes a connecting sleeve 461, an unlocking member 462, and a clamping buckle 463. The connecting sleeve 461 is fixedly installed on the outer cylinder 43. The unlocking member 462 is slidably arranged up and down inside the connecting sleeve 461. The clamping buckle 463 is slidably arranged in the hidden groove opened in the inner cylinder 41. The clamping buckle 463 is elastically connected to the hidden groove. The upper end of the clamping buckle 463 is temporarily clamped in the buckle groove opened in the outer cylinder 43, and the lower end of the unlocking member 462 is located in the buckle groove.

[0027] During the actual operation process, if it is necessary to unlock the positions of the inner cylinder 41 and the outer cylinder 43, only need to press the unlocking member 462 to squeeze the clamping buckle 463 downward so that its upper end disengages from the buckle groove. At this time, the positions of the inner cylinder 41 and the outer cylinder 43 are unlocked.

[0028] Refer to Figures 2-3 As shown, the mask assembly 5 includes a sliding sleeve 51, a clamping ring groove 52, a pressing unit 53, a mask 54, and a square sleeve 55. The sliding sleeve 51 is slidably arranged outside the insertion tube 3. The front end of the sliding sleeve 51 is provided with a clamping ring groove 52. The pressing unit 53 is arranged in the built-in cavity opened in the sliding sleeve 51. The pressing unit 53 is used to press the insertion tube 3 to hinder the liquid transportation. The mask 54 is installed outside the sliding sleeve 51. The square sleeve 55 is slidably arranged at the front end of the outer cylinder 43, and the sliding sleeve 51 is rotatably arranged at the front end of the square sleeve 55; the clamping ring groove 52 is composed of an annular groove and an inlet. The upper and lower ends of the annular groove are symmetrically communicated with inlets, and the position of the clamping member 7 corresponds to the clamping ring groove 52.

[0029] During the actual operation process, when the occluder 6 is combined with the mask assembly 5, the square sleeve 55 is slid out of the outer cylinder 43 and slides along the infusion direction of the insertion tube 3 until the clamping member 7 of the L-shaped structure enters the clamping ring groove 52 from the inlet. Subsequently, the sliding sleeve 51 is rotated so that the clamping member 7 and the clamping ring groove 52 are in a clamped state (at this time, the clamping member 7 and the inlet are arranged staggeredly). At this time, the combination of the occluder 6 and the mask assembly 5 is completed. When it is necessary to block the insertion tube 3 subsequently, the insertion tube 3 is blocked by pressing through the pressing unit 53.

[0030] Refer to Figure 6 As shown, the pressing unit 53 includes a threaded member 531, a square block 532, and a pressing column 533. The threaded member 531 is in threaded fit connection in the threaded cylinder, and the threaded cylinder is installed in the middle of the connection groove opened in the sliding sleeve 51. There is a rotational fit connection between the upper end of the square block 532 and the lower end of the threaded member 531. The square block 532 is arranged to slide up and down at the lower end of the connection groove, and a pressing column 533 is rotatably sleeved at the lower end of the square block 532.

[0031] During the actual operation process, when it is necessary to block the insertion tube 3 by pressing, the threaded member 531 is rotated to perform a spiral descent, and the square block 532 rotatably connected to the lower end of the threaded member 531 drives the pressing column 533 to descend so as to block the insertion tube 3 by pressing.

[0032] Refer to Figure 4 As shown, the occluder 6 includes an occluding member 61. The occluding members 61 arranged up and down are connected by a connecting member 62. A sleeve member 63 is connected between the middle parts of the occluding members 61 by a pin shaft. The sleeve member 63 is slidably sleeved outside the insertion tube 3, and a clamping member 7 is fixedly installed at the rear end of the occluding member 61.

[0033] During the actual occlusion process, the occluding members 61 with upper and lower arc-shaped structures are occluded by the upper and lower teeth and put into the mouth, and the insertion tube 3 passes through the sleeve member 63 and enters the mouth.

[0034] Working principle: Step 1: Patient assessment: Confirm the indications and contraindications, measure the body weight, and calculate the total amount of gastric lavage fluid (10 - 15 mL / kg for children, and the total amount ≤ 1000 mL); Step 2: Equipment inspection: Test the negative pressure system (-15 to -20 kPa initial setting), check the pipeline tightness (500 mL of clear water for trial operation), and preheat the flushing fluid to 37 ± 1 °C (low temperature is likely to cause shivering); Step 3: Body position fixation: Left lateral position (lower the head by 15° to prevent aspiration), and use a restraint blanket for infants and young children (allow a 15° range of movement); Step 4: Insert the bite block 6 into the child's mouth for biting. Then, detach the mask assembly 5 from the one-way valve assembly 4 and move it closer to the bite block 6 along the infusion direction of the insertion tube 3 to assemble the two. At this time, the mask assembly 5 covers the outside of the mouth. Step 5: Insert the insertion tube 3 into the patient's stomach as required and confirm that the gastric tube is in the correct position. Connect the negative pressure gastric lavage machine 1 and slowly inject the gastric lavage fluid into the stomach through the device, 200 - 300 ml each time. Then, aspirate the gastric contents through negative pressure and observe whether the discharged fluid is clear (the one-way valve assembly 4 can be removed during aspiration to separate the infusion tube 2 and the insertion tube 3, and expose the rear end of the insertion tube 3). Repeat until the discharged fluid is not significantly contaminated. Step 6: After completing the gastric lavage, gently pull out the gastric tube and assist the patient to adjust the body position.

[0035] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pediatric negative pressure gastric lavage device for pediatric nursing, characterized in that, Comprising: A negative pressure gastric lavage machine (1); An infusion tube (2), one end of which is connected to the infusion port of the negative pressure gastric lavage machine (1); An insertion tube (3), which is connected to the infusion tube (2) through a one-way valve assembly (4); A mask assembly (5), which is slidably sleeved outside the one-way valve assembly (4); A bite block (6), the inside of which forms a sleeved relationship with the front end of the insertion tube (3), and clamping members (7) are symmetrically arranged up and down at the rear end of the bite block (6), and the clamping members (7) can be temporarily clamped with the mask assembly (5).

2. The pediatric negative pressure gastric lavage device for pediatric nursing according to claim 1, wherein: The one-way valve assembly (4) includes: An inner cylinder (41), the rear end of which is connected to the front end of the infusion tube (2), and a valve core unit (42) is arranged inside the inner cylinder (41); An outer cylinder (43), the front end of which is connected to the rear end of the insertion tube (3), and an inner and outer sleeved relationship is formed between the inner cylinder (41) and the outer cylinder (43); A sliding frame (44), which is slidably arranged outside the outer cylinder (43), and limiting units (45) are symmetrically arranged at the upper and lower ends inside the sliding frame (44), and the limiting units (45) cooperate with the valve core unit (42); A locking unit (46), which temporarily locks the positions between the inner cylinder (41) and the outer cylinder (43).

3. A pediatric negative pressure gastric lavage device for pediatric nursing according to claim 2, characterized in that: The valve core unit (42) includes: A fixing frame (421), which is fixedly installed in the inner cavity of the inner cylinder (41), and the middle part of the inner cavity is a reduced diameter structure from front to back; A valve core (422), which is horizontally slidably arranged on the fixing frame (421), and the valve core (422) at the rearmost position blocks the middle part of the inner cavity.

4. A pediatric negative pressure gastric lavage device for pediatric nursing, characterized in that: The limiting unit (45) includes a limiting member (451), the limiting member (451) is slidably arranged in a sliding groove (452) opened on the side wall of the outer cylinder (43), and separating grooves are symmetrically opened at the front and rear ends of the sliding groove (452), a partition plate (453) is installed in the middle of the limiting member (451), the partition plate (453) is located between the separating grooves, the outer end of the limiting member (451) is fixedly connected to the sliding frame (44), and the inner end of the limiting member (451) is temporarily clamped in a clamping groove opened on the valve core (422).

5. A pediatric negative pressure gastric lavage device for pediatric nursing, characterized in that: The locking unit (46) includes: A connecting sleeve (461), which is fixedly installed on the outer cylinder (43), and an unlocking member (462) is slidably arranged up and down inside the connecting sleeve (461); A clamping buckle (463), which is slidably arranged up and down in a hidden groove opened on the inner cylinder (41), and the clamping buckle (463) is elastically connected to the hidden groove, the upper end of the clamping buckle (463) is temporarily clamped in a clamping buckle groove opened on the outer cylinder (43), and the lower end of the unlocking member (462) is located in the clamping buckle groove.

6. The pediatric negative pressure gastric lavage device for pediatric nursing according to claim 2, wherein: The mask assembly (5) includes: A sliding sleeve (51), which is slidably arranged outside the insertion tube (3), and a clamping ring groove (52) is opened at the front end of the sliding sleeve (51); A pressing unit (53), which is arranged in a built-in cavity opened on the sliding sleeve (51), and the pressing unit (53) is used to press the insertion tube (3) to block liquid delivery; A mask (54), which is installed outside the sliding sleeve (51); The square sleeve (55) is slidably arranged at the front end of the outer cylinder (43), and the sliding sleeve (51) is rotatably arranged at the front end of the square sleeve (55).

7. A pediatric negative pressure gastric lavage device for pediatric care according to claim 6, characterized in that: The clamping ring groove (52) consists of an annular groove and an inlet. The upper and lower ends of the annular groove are symmetrically communicated with the inlet, and the position between the clamping member (7) and the clamping ring groove (52) corresponds to each other.

8. A pediatric negative pressure gastric lavage device for pediatric nursing, characterized in that: The pressing unit (53) includes: A threaded member (531) which is in threaded engagement with a threaded cylinder, and the threaded cylinder is installed in the middle of the connecting groove formed in the sliding sleeve (51); A square block (532) which is rotatably connected to the lower end of the threaded member (531) at its upper end. The square block (532) is arranged to slide up and down at the lower end of the connecting groove, and a pressing column (533) is rotatably sleeved at the lower end of the square block (532).

9. The pediatric negative pressure gastric lavage device for pediatric nursing according to claim 1, wherein: The biter (6) includes a biting member (61). The biting members (61) arranged up and down are connected by a connecting member (62). A sleeve member (63) is connected between the middle parts of the biting members (61) by a pin shaft. The sleeve member (63) is slidably sleeved outside the insertion tube (3), and a clamping member (7) is fixedly installed at the rear end of the biting member (61).

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