Gastric lavage device for emergency treatment of acute poisoning patient

Abstract

The invention relates to a gastric lavage device for emergency treatment of acute poisoning patients, belongs to the technical field of gastric lavage devices, and aims to solve the problems that an existing gastric lavage device is not provided with an oral cavity fixing device and a pushing limiting device, cannot conveniently provide an intubation channel, can only depend on medical staff to manually push stomach tubes section by section, and is inconvenient to use. The gastric lavage device for emergency treatment of the acute poisoning patient comprises a stomach tube, an oral cavity fixing mechanism and a pushing limiting structure, the oral cavity fixing mechanism and the pushing limiting structure are connected together and used for opening the oral cavity of the patient and keeping the oral cavity in the state that the tube can be inserted, and the pushing limiting structure is connected with the stomach tube. Meanwhile, an insertion channel is established for the stomach tube, the pushing limiting structure automatically and slowly pushes the stomach tube into the body of the patient through a mechanical structure, manual adjustment can be conducted according to the pushing speed, speed adjustment in the intubation process is met, and the stomach tube is suitable for patients of different conditions.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gastric lavage devices, and particularly relates to an acute poisoning patient emergency gastric lavage device. BACKGROUND

[0002] Gastric lavage refers to connecting a gastric lavage pipeline after a patient takes a lateral position, pouring a certain component of gastric lavage fluid into a stomach cavity, and then repeatedly sucking out the gastric lavage fluid mixed with the stomach contents, so as to remove the unabsorbed poisons in the stomach or clean the stomach cavity. It is an important rescue measure. During the operation, the gastric tube is inserted into the stomach through the nasal cavity or oral cavity, the poisons are first sucked out, and then the gastric lavage fluid is injected, and the stomach contents are discharged, so as to achieve the purpose of eliminating poisons. During nursing, attention should be paid to avoiding gastric tube pollution and gastric tube prolapse. The existing gastric lavage equipment continuously introduces gastric lavage fluid into the stomach of the patient through the gastric tube inserted into the stomach of the patient during actual use, and the gastric lavage fluid and the stomach contents of the patient need to be fully mixed before being sucked out. This process needs to be repeated many times until the sucked liquid has high clarity. During the process, the patient is always in a lateral position and does not move, and the mixing degree of the gastric lavage fluid and the stomach contents entering the stomach each time is insufficient, which leads to a large number of repeated processes, causing the patient to feel uncomfortable and leading to reflux, vomiting, drooling and other phenomena.

[0003] Patent document with publication number CN119280548A discloses a gastric lavage device, which comprises a gastric lavage device and a gastric tube in communication with the gastric lavage device. The distal end of the gastric tube is provided with a mixing unit. The mixing unit comprises a connecting pipe, a rotating part and a one-way part. The connecting pipe is fixedly connected with the gastric tube. The rotating part is annular and comprises an outer ring and an inner ring. The outer ring of the rotating part is rotationally connected with the end of the connecting pipe. The inner ring of the rotating part is rotationally provided with a fan blade part between the outer ring. The fan blade part rotates when fluid passes through it. The one-way part is fixed in the inner ring of the rotating part. The one-way part is opened when the mixture is sucked in and is closed when the gastric lavage fluid is output.

[0004] The gastric lavage device can mix sufficiently and improve the comfort of the patient during the gastric lavage process. However, the device still has the following problems during use: (1) No oral cavity fixing device is provided, and it is not convenient and fast to establish a tube insertion channel on the human body, which is convenient for doctors to perform tube insertion operation.

[0005] (2) No pushing limiting device is provided, and the gastric tube can only be manually pushed by medical staff in sections, which is time-consuming and prone to cause tube insertion failure due to patient resistance (such as vomiting reflex). Meanwhile, the inserted gastric tube cannot be limited, and the inserted gastric tube is prone to be unstable due to patient restlessness or natural body rejection.

[0006] Therefore, it is urgent to design an acute poisoning patient emergency gastric lavage device to solve the above problems. SUMMARY

[0007] In view of the problems in the prior art that the oral cavity fixing device and the pushing limiting device are not arranged, the intubation channel cannot be conveniently provided, and the gastric orifice after intubation cannot be positioned, the present application provides an emergency gastric lavage device for acute poisoning patients, which comprises a gastric tube, an oral cavity fixing mechanism and a pushing limiting structure, the oral cavity fixing mechanism and the pushing limiting structure are linked together, wherein the oral cavity fixing mechanism is used for opening and keeping the oral cavity of the patient in a state that can be intubated, and at the same time an intubation channel is established for the gastric tube, so as to facilitate the doctor to insert the gastric tube from the oral cavity of the patient to the stomach through the channel.

[0008] The pushing limiting structure is used in cooperation with the gastric tube, and acts on the gastric tube, so that the gastric tube is automatically pushed into the patient's body at a slow speed by a mechanical structure, and the pushing speed can be manually adjusted to meet the rate adjustment in the intubation process and adapt to patients in different conditions.

[0009] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: An emergency gastric lavage device for acute poisoning patients, comprising a gastric tube, further comprising: An oral cavity fixing mechanism for opening the oral cavity and establishing a channel for the gastric tube; A pushing limiting structure connected with the oral cavity fixing mechanism, the gastric tube is inserted into the pushing limiting mechanism, and the front end of the gastric tube is sent into the stomach through the pushing limiting mechanism.

[0010] Preferably, the oral cavity fixing mechanism comprises: An upper tooth fixing sleeve and a lower tooth fixing sleeve; A positioning assembly arranged between the upper tooth fixing sleeve and the lower tooth fixing sleeve, used for connecting and adjusting the distance between the upper tooth fixing sleeve and the lower tooth fixing sleeve.

[0011] Preferably, the pushing limiting structure comprises: A driving wheel assembly arranged on the lower tooth fixing sleeve, used for pushing the gastric tube; A plurality of auxiliary wheel assemblies cooperated with the driving wheel assembly to surround the gastric tube and abut against the outer wall of the gastric tube; Two groups of adjusting assemblies arranged on the two auxiliary wheel assemblies on the two sides of the driving wheel assembly, respectively, used for adjusting the distance between the two auxiliary wheel assemblies.

[0012] Preferably, the auxiliary wheel assembly comprises a wheel seat and a wheel body connected with each other, and a resilient member is further arranged between the wheel body and the wheel seat.

[0013] Preferably, the adjusting assembly comprises: A sliding seat sleeved on the positioning assembly; A limiting plate connected to the upper tooth fixing sleeve; The limiting column assembly is connected with the auxiliary wheel assembly at one end and movably inserted with the limiting plate at the other end, and is slidably connected with the sliding seat, for adjusting and positioning the position of the auxiliary wheel assembly.

[0014] Preferably, a reflux-preventing member is sleeved near the insertion end of the gastric tube.

[0015] Preferably, a blockage-preventing member is arranged in the insertion end of the gastric tube.

[0016] Preferably, the blockage-preventing member comprises: a plurality of circular supports arranged at intervals; a connecting air column connected with the plurality of circular supports respectively; an inflation pipeline connected at one end with the circular support away from the suction end of the gastric tube and extended out of the connection end of the gastric tube.

[0017] Preferably, a one-way valve is further arranged in the tube body of the gastric tube.

[0018] The beneficial effects of the present application are that the present application discloses a gastric lavage device for first aid of acute poisoning patients, and compared with the prior art, the improvement of the present application is that: (1) The oral cavity fixing mechanism is designed to quickly open the oral cavity and position the opened state, and the opening degree of the oral cavity of the patient can be adjusted according to the needs to meet the insertion needs of the doctor, and the oral cavity fixing mechanism provides an insertion channel for the gastric tube, which is convenient for the doctor to insert through the channel and supports the gastric tube.

[0019] (2) The present application designs a pushing and limiting structure composed of a driving wheel assembly, a plurality of auxiliary wheel assemblies and an adjusting assembly, which is used to realize automatic pushing mode and slowly insert the cannula into the patient's body; and during the insertion process, the auxiliary wheel assembly assists the driving wheel assembly to push the cannula and provides guiding and limiting functions to ensure that the cannula moves in position and according to the specified path; and the adjusting assembly can manually adjust the insertion rate to meet the needs of rate adjustment according to the patient's reaction during the insertion process, thereby improving the practicability.

[0020] (3) The present application designs a reflux member and a one-way valve, wherein the reflux member is arranged near the suction end of the gastric tube to block the natural passage of the patient's stomach and prevent the reflux of gastric juice into the esophagus during the suction process, thereby affecting the gastric lavage and causing discomfort to the patient. The one-way valve is arranged in the tube body of the gastric tube to avoid the reflux of the liquid entering the tube body. Through the mutual cooperation of the reflux member and the one-way valve, a double-layer material barrier is formed to achieve the maximum relief of the reflux during the gastric lavage. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the gastric lavage device of the present application. Figure 2 The stomach lavage device is a top view of the application; Figure 3 The oral cavity fixing mechanism is a side view of the application; Figure 4 The push limiting structure is a structural schematic diagram of the application Figure 1 ; Figure 5 The push limiting structure is a structural schematic diagram of the application Figure 2 ; Figure 6 The auxiliary wheel assembly is a structural schematic diagram of the application; Figure 7 The push limiting structure is a bottom view of the application; Figure 8 The A part is an enlarged view of the application; Figure 9 The anti-blocking piece is a setting diagram of the application; Figure 10 The anti-blocking piece is a structural schematic diagram of the application; Figure 11 The one-way valve is a setting diagram of the application; Wherein: 1, oral cavity fixing mechanism; 101, upper tooth fixing sleeve; 1011, spring one; 102, lower tooth fixing sleeve; 103, positioning assembly; 1031, inflatable sleeve; 1032, sliding column; 104, mounting seat; 2, stomach tube; 201, anti-reflux piece; 3, push limiting structure; 301, driving wheel assembly; 3011, motor; 3012, driving wheel; 302, auxiliary wheel assembly; 3021, wheel seat; 3022, wheel body; 3023, elastic piece; 303, adjusting assembly; 3031, sliding seat; 3032, limiting plate; 3033, limiting column assembly; 3033A, sliding column; 3033B, sliding block; 3033C, guide piece; 3033D, spring two; 4, anti-blocking piece; 401, circular support; 402, connecting air column; 403, inflatable pipeline; 5, one-way valve. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in the description herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] In describing a position relationship, unless otherwise defined, when an element such as a layer, film or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, when a layer is referred to as being "under" or "beneath" another layer, it can be directly under the other layer, or one or more intervening layers can also be present. It will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers can also be present.

[0025] In the case of using "include", "have", and "contain" described herein, unless an explicit limiting term is used, such as "only", "consisting of", and the like, another component can be added. Unless otherwise mentioned, the singular form of the term can include the plural form, and it is not understood as the number of one.

[0026] It should be understood that although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element without departing from the scope of the present application.

[0027] It should also be understood that, in interpreting the elements, although not explicitly described, the elements are interpreted to include an error range that should be within an acceptable deviation range of a specific value determined by a person skilled in the art. For example, "about", "approximately", or "substantially" can mean within one or more standard deviations, without limitation.

[0028] Further, in the specification, the phrase "plan view schematic diagram" refers to a drawing when the target portion is viewed from above, and the phrase "cross-sectional view schematic diagram" refers to a drawing when a section is taken by vertically cutting the target portion and the section is viewed from the side.

[0029] Further, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements are drawn in the drawings only by way of example, not necessarily in true scale. Embodiments

[0030] Referring to the drawings Figures 1-11The device is used for gastric lavage of an acute poisoning patient, and comprises a mouth cavity fixing mechanism 1, a gastric tube 2 and a pushing limiting structure 3.

[0031] The pushing limiting structure 3 is fixedly connected with the mouth cavity fixing mechanism 1 and is used in cooperation with the mouth cavity fixing mechanism 1, for pushing and limiting the gastric tube 2 into the mouth cavity fixing mechanism 1 at a constant speed, so as to avoid too fast or too slow pushing speed and cause discomfort of the patient.

[0032] In the embodiment, the device is shown in the attached drawings. Figure 3 As shown in the drawings, the mouth cavity fixing mechanism 1 comprises an upper tooth fixing sleeve 101, a lower tooth fixing sleeve 102 and a positioning assembly 103, wherein the upper tooth fixing sleeve 101 is slidably and elastically sleeved on the upper end of the positioning assembly 103, the lower tooth fixing sleeve 102 is slidably and elastically sleeved on the lower end of the positioning assembly 103, that is, the lower tooth fixing sleeve 102 can be elastically slid, and the positioning assembly 103 is arranged between the upper tooth fixing sleeve 101 and the lower tooth fixing sleeve 102, for adjusting and positioning the distance between the upper tooth fixing sleeve 101 and the lower tooth fixing sleeve 102, so as to open and position the mouth cavity of the patient.

[0033] Specifically, as shown in the drawings, Figure 4 The positioning assembly 103 is connected by an inflatable sleeve 1031 and two slide columns 1032, the inflatable sleeve 1031 is arranged between the two slide columns 1032 and is fixedly connected with the bottom end of the upper tooth fixing sleeve 101 and connected with the upper end of the lower tooth fixing sleeve 102, and the inflatable sleeve 1031 can drive the upper tooth fixing sleeve 101 and the lower tooth fixing sleeve 102 to move relatively after being inflated.

[0034] The upper tooth fixing sleeve 101 and the lower tooth fixing sleeve 102 are slidably sleeved on the upper and lower ends of the slide columns 1032 through mounting seats 104 and are arranged on the two sides of the inflatable sleeve 1031, and springs 1011 are further sleeved on the two ends of the slide columns 1032, one end of each spring 1011 is connected with the end of the slide column 1032, and the other end is fixedly connected with the upper tooth fixing sleeve 101 or the lower tooth fixing sleeve 102.

[0035] The upper tooth fixing sleeve 101 and the lower tooth fixing sleeve 102 are in arc-shaped structures and are made of medical silica gel material, which is in line with the dental arch shape of the patient and avoids pressing the gums, the inflatable sleeve 1031 forms an insertion channel for the gastric tube 2 after being inflated and presses the tongue, and the distance between the upper tooth fixing sleeve 101 and the lower tooth fixing sleeve 102 is adjusted, so that the mouth cavity of the patient is kept in an open state, the pressure of the inflatable sleeve 1031 is controllable in the range of 20-40 mmHg, the inflatable sleeve 1031 is a sleeve-shaped air bag and can be inflated.

[0036] When the mouth of the patient needs to be opened for positioning, and the insertion channel of the gastric tube is established, the upper dental fixing sleeve 101 and the lower dental fixing sleeve 102 are inserted into the mouth of the patient, so that the upper and lower teeth of the patient are respectively clamped on the upper dental fixing sleeve 101 and the lower dental fixing sleeve 102, then the inflatable sleeve 1031 is inflated to expand, the inflatable sleeve 1031 expands and presses the upper dental fixing sleeve 101 and the lower dental fixing sleeve 102 close to both ends of the slide column 1032, and the compression spring 1011 is compressed, so that the mouth of the patient is opened, and when the opening reaches the required degree, the inflation of the inflatable sleeve 1031 is stopped, so that the inflatable sleeve 1031 maintains the current expansion state, and the opening degree of the mouth of the patient is positioned.

[0037] In the embodiment of the present application, referring to FIG. 1, the push limiting structure 3 includes a driving wheel assembly 301, a plurality of auxiliary wheel assemblies 302, and an adjusting assembly 303. Figures 4-5 As shown in the figure, the driving wheel assembly 301 is fixedly arranged on the lower dental fixing sleeve 102 and in contact with the outer wall of the gastric tube 2, and when rotating, the gastric tube 2 is pushed into the body of the patient by friction.

[0038] In the embodiment of the present application, the auxiliary wheel assemblies 302 are three, which are arranged around the gastric tube 2 in cooperation with the driving wheel assembly 301, and are in contact with the outer wall of the gastric tube 2, and when the driving wheel assembly 301 pushes the gastric tube 2 to move, the remaining auxiliary wheel assemblies 302 ensure the stability of the gastric tube 2 during movement and guide the gastric tube 2.

[0039] The first auxiliary wheel assembly 302 is fixedly connected to the mounting seat 104 on the upper dental fixing sleeve 101 and is symmetrically arranged with the driving wheel assembly 301, the second auxiliary wheel assembly 302 is symmetrically arranged between the driving wheel assembly 301 and the first auxiliary wheel assembly 302, and is connected with the adjusting assembly 303.

[0040] The adjusting assembly 303 is two groups, which are fixedly arranged on the two auxiliary wheel assemblies 302, and the two auxiliary wheel assemblies 302 are symmetrically arranged, by changing the relative position between the two adjusting assemblies 303, the contact degree of the auxiliary wheel assembly 302 with the gastric tube 2 can be adjusted, that is, the friction between them is changed, when the friction between them is increased, the speed of the gastric tube 2 moving is slowed down, and the manual speed regulation of the gastric tube 2 is realized.

[0041] In order to ensure that the driving wheel assembly 301 and the plurality of auxiliary wheel assemblies 302 are always in contact with the surface of the gastric tube 2 during the adjustment of the upper dental fixing sleeve 101 and the lower dental fixing sleeve 102, the maximum inflation state of the inflatable sleeve 1031 is limited, so that even if the inflatable sleeve 1031 is inflated to the maximum extent, the driving wheel assembly 301 and the auxiliary wheel assemblies 302 symmetrical thereto are in contact with the outer wall of the gastric tube 2 and do not come off during the back movement of the upper dental fixing sleeve 101 and the lower dental fixing sleeve 102, ensuring that the driving wheel assembly 301 can smoothly push the gastric tube 2 into the stomach of the patient after the distance adjustment of the upper dental fixing sleeve 101 and the lower dental fixing sleeve 102.

[0042] Specifically, the driving wheel assembly 301 includes a motor 3011 and a driving wheel 3012, wherein the motor 3011 is fixedly connected with the lower dental fixing sleeve 102, and the motor 3011 is a stepping motor, which is an electric motor that converts an electrical pulse signal into a corresponding angular displacement or linear displacement. For every input pulse signal, the rotor rotates an angle or moves forward by one step, and the output angular displacement or linear displacement is proportional to the input pulse number, and the rotation speed is proportional to the pulse frequency, so that the uniform movement of the gastric tube 2 can be realized by the motor 3011, and the distance moved by the gastric tube 2 can be controlled in a fixed time.

[0043] The output shaft of the motor 3011 is connected with the rotating shaft of the driving wheel 3012, when the motor 3011 rotates, the rotating shaft of the driving wheel 3012 is driven to rotate, and then the driving wheel 3012 is driven to rotate, the driving wheel 3012 drives the gastric tube 2 to move through the friction force between them, thereby realizing the automatic insertion of the gastric tube 2 into the patient's body at a slow and uniform speed.

[0044] Referring to FIG. 1, Figure 6 As shown in the drawings, the driving wheel 3012 and the auxiliary wheel assembly 302 have the same structure, and both include a wheel seat 3021 and a wheel body 3022 connected with each other, and a elastic member 3023 is further arranged between the wheel body 3022 and the wheel seat 3021. Specifically, two telescopic rods symmetrically arranged are connected between the wheel seat 3021 and the wheel body 3022, the telescopic rods are sleeved with the elastic member 3023, one end of the elastic member 3023 is connected with the wheel body 3022, and the other end is connected with the wheel seat 3021.

[0045] The adjustment assembly 303 is used for adjusting the friction force between the auxiliary wheel assembly 302 and the gastric tube 2, and then manually adjusting the movement speed of the gastric tube 2, so as to meet the adjustment of the insertion speed of the gastric tube 2 during the intubation process.

[0046] Referring to FIG. 1, Figures 7-8As shown, the adjusting assembly 303 comprises a sliding seat 3031, a limiting plate 3032 and a limiting column assembly 3033, wherein the sliding seat 3031 is fixedly sleeved in the middle part of the sliding column 1032, and a sliding rail is fixedly arranged on the sliding seat 3031, which is used for sliding connection with the limiting column assembly 3033; the limiting plate 3032 is fixedly arranged on the mounting seat 104 of the oral cavity fixing mechanism 1, and a plurality of equidistant limiting holes are formed in the limiting plate 3032.

[0047] The limiting column assembly 3033 is slidingly arranged at one end in the sliding rail of the sliding seat 3031, and is movably inserted at the other end with the limiting plate 3032, and is further fixedly connected with the auxiliary wheel assembly 302. By moving the limiting column assembly 3033, the limiting column assembly 3033 can drive the auxiliary wheel assembly 302 to move synchronously, so as to adjust the abutting degree of the auxiliary wheel assembly 302 and the gastric tube 2, and increase or decrease the friction force between the auxiliary wheel assembly 302 and the gastric tube 2.

[0048] Further, the limiting column assembly 3033 comprises a sliding column 3033A, a sliding block 3033B, a guide piece 3033C and a spring 3033D. The sliding block 3033B is clamped in the sliding rail of the sliding seat 3031, the sliding column 3033A is movably sleeved at one end on the sliding block 3033B and is inserted at the other end into the limiting plate 3032, and the sliding block 3033B is fixedly connected with the wheel seat 3021.

[0049] In the initial state, since the distance between the upper dental fixing sleeve 101 and the lower dental fixing sleeve 102 is the smallest, at this time, the lower end of the sliding column 3033A is inserted into the sliding block 3033B and extends out of the sliding block 3033B, and the upper end is inserted into the limiting plate 3032. When the distance between the upper dental fixing sleeve 101 and the lower dental fixing sleeve 102 is adjusted to the maximum, due to the movement of the sliding column 3033A, the lower end of the sliding column 3033A is inserted into the sliding block 3033B, and the upper end is still inserted into the limiting plate 3032. That is, during the change of the distance between the upper dental fixing sleeve 101 and the lower dental fixing sleeve 102, the two ends of the sliding column 3033A are always inserted into the sliding block 3033B and the limiting plate 3032.

[0050] The sliding column 3033A passes through the guide piece 3033C, and the spring 3033D is arranged on the guide piece 3033C. The spring 3033D is sleeved on the sliding column 3033A, and one end is fixedly connected with the guide piece 3033C, and the other end is fixedly connected with the sliding column 3033A.

[0051] When the auxiliary wheel assembly 302 needs to be moved, the sliding column 3033A is manually pressed down, the sliding column 3033A compresses the spring 3033D, and moves downward relative to the sliding column 3033A, at this time the sliding column 3033A is disengaged from the limiting plate 3032, then the sliding column 3033A is pushed, the sliding block 3033B is used to make the sliding column 3033A slide on the sliding seat 3031, the sliding block 3033B drives the wheel seat 3021 to move synchronously, and then drives the wheel body 3022 to further contact the gastric tube 2, so that the friction between the two is increased, and after being adjusted to be appropriate, the force applied to the sliding column 3033A is released, the spring 3033D restores the deformation, drives the sliding column 3033A to move up and down relative to the sliding block 3033B, and is inserted into other limiting holes in the limiting plate 3032, and then the sliding column 3033A is locked, finally the adjustment and locking of the auxiliary wheel assembly 302 are realized.

[0052] In the embodiment of the present application, the material of the gastric tube 2 can be polyurethane or silica gel, which has a certain deformation capacity, and the insertion end of the gastric tube 2 is an arc-shaped insertion head, which is also made of polyurethane or silica gel, and has a hardness of 30-40 Shore A. Radial inclined holes are formed on the insertion head. This structure reduces the contact pressure by 70% compared with traditional hard gastric tubes.

[0053] A reflux prevention member 201 is sleeved near the insertion end of the gastric tube 2. The reflux prevention member 201 is made of medical rubber with high elasticity and good air tightness, and has a pressure threshold of 15-20 cmH2O. It can automatically inflate or deflate according to the change of the intragastric pressure, form a one-way valve effect, and prevent the reflux of vomitus.

[0054] Specifically, referring to FIG. 1, Figure 9 As shown in FIG. 1, the reflux prevention member 201 is a hollow cylindrical inflatable air bag, which can ensure that when the gastric tube 2 is suctioned, the gastric juice is only washed out through the gastric tube 2 and cannot flow back through the natural body channel.

[0055] As shown in FIG. 1, the reflux prevention member 201 is a hollow cylindrical inflatable air bag, which can ensure that when the gastric tube 2 is suctioned, the gastric juice is only washed out through the gastric tube 2 and cannot flow back through the natural body channel. Figure 9 As shown in FIG. 1, the reflux prevention member 201 is a hollow cylindrical inflatable air bag, which can ensure that when the gastric tube 2 is suctioned, the gastric juice is only washed out through the gastric tube 2 and cannot flow back through the natural body channel. Figure 1 As shown in FIG. 1, the reflux prevention member 201 is a hollow cylindrical inflatable air bag, which can ensure that when the gastric tube 2 is suctioned, the gastric juice is only washed out through the gastric tube 2 and cannot flow back through the natural body channel.

[0056] Specifically, in use, the reflux prevention member 201 can be inflated to expand, and after the reflux prevention member 201 expands, the cardia port is blocked, so that the liquid in the stomach cannot flow back into the esophagus through the cardia port, but can only pass through the end of the gastric tube 2.

[0057] The insertion end of the gastric tube 2 is provided with a hollow structure, and a blockage prevention piece 4 is arranged in the insertion end of the gastric tube 2, the blockage prevention piece 4 is an inflatable air bag support, when the end of the gastric tube 2 is blocked during the suction process, the blockage prevention piece 4 can be inflated to expand and then support the end of the gastric tube 2, so that the inner diameter of the end of the gastric tube 2 is increased, and the suction is smoothly carried out, and mechanical damage caused by forced suction is avoided.

[0058] Wherein referring to the accompanying drawings Figure 10 The blockage prevention piece 4 includes three circular supports 401, a connecting air column 402 and an inflation pipeline 403, wherein the three circular supports 401 are spaced apart and communicated with the connecting air column 402, the inflation pipeline 403 is communicated on the circular support 401 away from the suction end of the gastric tube 2 and extends along the wall of the gastric tube 2 to the outer end of the gastric tube 2, so as to facilitate the inflation of the blockage prevention piece 4 to expand.

[0059] Specifically, the circular support 401 includes a circular ring support and four inclined supports, which are X-shaped and communicated with the circular ring support at one end and communicated with the connecting air column 402 at the other end, which constitutes a whole inflatable support frame, and the material of the blockage prevention piece 4 is preferably silicone or rubber, which can deform after inflation.

[0060] Further, referring to the accompanying drawings Figure 11 The body of the gastric tube 2 is also fixedly provided with a one-way valve 5 for preventing reverse flow in the gastric tube 2, the one-way valve 5 is made of medical grade silicone and has good elasticity and sealing property, allowing one-way flow of liquid during normal gastric lavage, and quickly closing and blocking the reflux when the gastric juice refluxes.

[0061] Specifically, the one-way valve 5 is composed of two L-shaped one-way valves, under the condition that the gastric tube 2 has suction force, the liquid can be smoothly sucked through the one-way valve 5, when the suction force in the gastric tube 2 disappears, and under the condition that the gastric tube 2 is vertical, the liquid in the gastric tube 2 will not flow back to the patient's body through the one-way valve 5, thereby avoiding the reflux in the gastric tube 2.

[0062] The use principle of the gastric lavage device for first aid of acute poisoning patients is as follows: when gastric lavage operation is needed, the oral cavity fixing mechanism 1 is used first, and the oral cavity of the patient is adjusted and fixed to a state convenient for the insertion of the gastric tube 2.

[0063] Specifically, first, the upper dental fixed sleeve 101 and the lower dental fixed sleeve 102 are inserted into the patient's oral cavity, so that the patient's upper and lower teeth are respectively occluded on the upper dental fixed sleeve 101 and the lower dental fixed sleeve 102, then the inflatable sleeve 1031 is inflated to expand, the inflatable sleeve 1031 expands and presses the upper dental fixed sleeve 101 and the lower dental fixed sleeve 102 close to the two ends of the slide column 1032, and the spring 1011 is compressed, so as to realize the opening of the patient's mouth, and after the opening to the required degree, the inflation of the inflatable sleeve 1031 is stopped, so as to keep the current expansion state, and then the positioning of the opening degree of the patient's oral cavity is realized.

[0064] Then, the insertion end of the gastric tube 2 is inserted into the push limiting structure 3 and into the inflatable sleeve 1031, at this time, the driving wheel 3012 and the three auxiliary wheel assemblies 302 are arranged around the gastric tube 2, then the motor 3011 is started, the motor 3011 rotates to drive the rotating shaft of the driving wheel 3012 to rotate, and then drives the driving wheel 3012 to rotate, the driving wheel 3012 drives the gastric tube 2 to move deep into the body through the friction force between the driving wheel 3012 and the gastric tube 2, while the three auxiliary wheel assemblies 302 guide and assist the driving wheel 3012 to move, so as to automatically insert the gastric tube 2 into the patient's body at a slow and uniform speed.

[0065] When it is necessary to adjust the insertion speed of the gastric tube 2 to slow down the insertion speed, the friction force between any one of the auxiliary wheel assemblies 302 connected with the adjusting assembly 303 and the gastric tube 2 is adjusted through the adjusting assembly 303, so as to adjust the insertion speed of the gastric tube 2.

[0066] Specifically, the slide column 3033A is manually pressed down, the spring 3033D is compressed, and the slide column 3033A moves downward relative to the slide column 3033A, at this time, the slide column 3033A is separated from the limiting plate 3032, then the slide column 3033A is pushed, the slide block 3033B is used to make the slide column 3033A slide on the slide seat 3031, the slide block 3033B drives the wheel seat 3021 to move synchronously, and then drives the wheel body 3022 to further contact the gastric tube 2, so as to increase the friction force between them, after adjusting to the appropriate degree, the force applied to the slide column 3033A is released, the spring 3033D restores the deformation, drives the slide column 3033A to move upward and downward relative to the slide block 3033B, and inserts into other limiting holes in the limiting plate 3032, and then the slide column 3033A is locked, finally the adjustment and locking of the auxiliary wheel assembly 302 are realized, and then the adjustment of the friction force between the auxiliary wheel assembly 302 and the gastric tube 2 is completed.

[0067] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A gastric lavage device for emergency treatment of patients with acute poisoning, comprising a gastric tube (2), characterized in that, Also includes: Oral fixation mechanism (1); used to open the oral cavity and establish a passage for the gastric tube; The push-limiting structure (3) is connected to the oral fixation mechanism (1). The gastric tube (2) is inserted into the push-limiting structure (3). The front end of the gastric tube (2) is sent into the stomach through the push-limiting structure (3).

2. The gastric lavage device for emergency treatment of acute poisoning patients according to claim 1, characterized in that, Dental fixation devices (1) include: Upper tooth fixation sleeve (101) and lower tooth fixation sleeve (102); A positioning component (103) is disposed between the upper tooth fixing sleeve (101) and the lower tooth fixing sleeve (102) for connecting and adjusting the distance between the upper tooth fixing sleeve (101) and the lower tooth fixing sleeve (102).

3. The gastric lavage device for emergency treatment of acute poisoning patients according to claim 2, characterized in that, The push limit structure (3) includes: The active wheel assembly (301) is mounted on the lower tooth fixation sleeve (102) and is used to push the gastric tube (2). Several auxiliary wheel assemblies (302) are arranged around the gastric tube (2) in conjunction with the active wheel assembly (301) and abut against the outer wall of the gastric tube (2); Two sets of adjustment components (303) are respectively set on two auxiliary wheel components (302) on both sides of the drive wheel component (301) to adjust the distance between the two corresponding auxiliary wheel components (302).

4. The gastric lavage device for emergency treatment of acute poisoning patients according to claim 3, characterized in that, The auxiliary wheel assembly (302) includes a wheel seat (3021) and a wheel body (3022) connected to each other, and an elastic element (3023) is also provided between the wheel body (3022) and the wheel seat (3021).

5. A gastric lavage device for emergency treatment of acute poisoning patients according to claim 3, characterized in that, The adjustment component (303) includes: The slide (3031) is fitted onto the positioning component (103); The limiting plate (3032) is connected to the upper tooth fixing sleeve (101); The limiting post assembly (3033) is connected at one end to the auxiliary wheel assembly (302) and movably inserted at the other end to the limiting plate (3032). The limiting post assembly (3033) is slidably connected to the slide (3031) and is used to adjust and position the auxiliary wheel assembly (302).

6. The gastric lavage device for emergency treatment of acute poisoning patients according to claim 1, characterized in that, An anti-reflux device (201) is fitted near the insertion end of the gastric tube (2).

7. A gastric lavage device for emergency treatment of acute poisoning patients according to claim 1, characterized in that, An anti-blocking device (4) is provided inside the insertion end of the gastric tube (2).

8. A gastric lavage device for emergency treatment of acute poisoning patients according to claim 7, characterized in that, Anti-clogging component (4) includes: Several circular brackets (401) are spaced apart; Connect the air column (402) and connect it to several circular brackets (401) respectively; An air-filled tube (403) is connected at one end to a circular support (401) away from the suction end of the gastric tube (2), and at the other end extends out of the connection end of the gastric tube (2).

9. A gastric lavage device for emergency treatment of acute poisoning patients according to claim 1, characterized in that, A one-way valve (5) is also installed inside the gastric tube (2).

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