A kind of pneumatic powerful reversing mechanism for gastric lavage machine

Abstract

This utility model relates to the field of gastric lavage machine technology, specifically to a pneumatically powered reversing mechanism for a gastric lavage machine. It includes a housing, within which a first channel and a second channel are symmetrically arranged. A liquid inlet port and a stomach inlet port are respectively provided on the rear side of the housing. A second port is also provided on the front side of the housing, corresponding to the first port. A stomach outlet port and a drain port are also respectively provided on the front side of the housing, corresponding to the liquid inlet port and the stomach inlet port, and all three ports communicate with the second channel. A reversing rod is adapted and installed in both the first and second channels, and the reversing rod has a reversing flow channel. The reversing rod is movable, allowing the first port to be selectively connected to either the liquid inlet port or the stomach inlet port, and the second port to be selectively connected to either the stomach outlet port or the drain port. This utility model significantly improves the safety and efficiency of gastric lavage while avoiding cross-contamination of the liquid.

Description

Technical Field

[0001] This utility model relates to the field of gastric lavage machine technology, specifically to a pneumatic powerful reversing mechanism for a gastric lavage machine. Background Technology

[0002] A gastric lavage machine is a medical device suitable for use in medical units and emergency centers to rescue patients suffering from food poisoning or ingestion of poison, as well as for preoperative gastric lavage. An electric gastric lavage machine generally consists of a main unit, liquid tubing, and a lavage tube. If the lavage tube is an externally purchased product, it should be a qualified product that meets product registration requirements and has a registration certificate. If the lavage tube is manufactured by the company itself, relevant performance indicators for the lavage tube should be added to the product registration standard. Some instruments also have a collection bottle. Under the power of positive and negative pressure pumps, the electric gastric lavage machine controls two pneumatic-controlled liquid volume control units according to the gastric lavage program via a solenoid valve group. Simultaneously, it draws liquid from the stomach and the clean liquid tank. Through a liquid path switching device, the reversing control system switches from negative pressure to positive pressure, discharging liquid into the stomach and the waste liquid tank respectively. However, the reversing control structure of traditional gastric lavage machines is relatively simple, resulting in poor performance and a high risk of cross-infection. Summary of the Invention

[0003] In order to address the shortcomings and deficiencies of existing gastric lavage machines, this invention provides a pneumatic high-power reversing mechanism for gastric lavage machines that improves the safety and efficiency of gastric lavage while avoiding cross-contamination of liquids.

[0004] This utility model achieves the above objectives by adopting the following technical solution:

[0005] A pneumatic high-power reversing mechanism for a gastric lavage machine includes a housing. The housing is arranged horizontally, with a first channel and a second channel extending laterally and symmetrically within the housing. A first port for connecting to a clean water tank is located on the rear side of the housing, and this first port communicates with the first channel. A liquid inlet port and a stomach inlet port are located on the rear side of the housing, away from the first port, with a gap between them. A second port is located on the front side of the housing, corresponding to the first port, for connecting to a wastewater tank. A stomach outlet port and a drain port are located on the front side of the housing, corresponding to the liquid inlet port and the stomach inlet port, and all three ports communicate with the second channel. A reversing rod is fitted into both the first and second channels. The reversing rod has an L-shaped cross-section for reversing flow channels, and the reversing rod is movable, allowing the first port to communicate with either the liquid inlet port or the stomach inlet port, and the second port to communicate with either the stomach outlet port or the drain port.

[0006] Preferably, a fixing groove is provided on the outer side of the housing, the fixing groove extends to the left and right, and a sliding block is adapted to be installed in the fixing groove. A fixing plate is connected and installed on one side of the sliding block. The fixing plate has a Z-shaped structure and is fixed to the sliding block by welding. A first mounting hole is provided on one side of the fixing plate. A vertically distributed connecting plate is also provided on one side of the fixing plate. A second mounting hole is opened on the connecting plate. Bolts are provided at both the first mounting hole and the second mounting hole.

[0007] A further preferred embodiment includes: a scale line extending left and right on one side of the fixing groove; and an indicator mark on one side of the connecting plate.

[0008] Preferably, a guide member is provided between the reversing rod and the first channel. The guide member includes a guide strip and a guide groove. The guide strip is disposed on the reversing rod, and the guide groove is opened in the first channel, and the guide strip and the guide groove are matched and installed.

[0009] A further preferred embodiment: the outer end of the commutator is also connected to a commutator drive, the commutator drive including a base plate and a power source, the base plate being connected to the two commutator rods by screws; the power source is disposed inside the housing and is used to connect the base plate for movement.

[0010] Further preferred: the power source is any one of a hydraulic push rod, a drive motor, or an air pump.

[0011] The advantages of this invention compared to existing technologies are as follows: This invention features a rational structural design. By employing an integrated structure to connect the clean water tank and the wastewater tank separately, the two circuits are designed to be independent of each other. Furthermore, with the cooperation of the base plate, power source, and reversing rod, automated circuit switching is achieved, improving the safety and efficiency of gastric lavage while avoiding cross-contamination of the liquids. The further design of the fixing groove and movable fixing plate optimizes the installation structure, allowing it to be adapted for installation in gastric lavage machine housings of different sizes and specifications, saving time and effort and enhancing practicality. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a perspective view of the overall structure of Embodiment 1 of this utility model;

[0014] Figure 2 This is a cross-sectional view of Embodiment 1 of the present invention. Figure 1 ;

[0015] Figure 3 This is a cross-sectional view of Embodiment 1 of the present invention. Figure 2 ;

[0016] Figure 4 This is a perspective view of Embodiment 2 of the present invention.

[0017] In the diagram: 1. Shell; 2. First channel; 3. Second channel; 4. First port; 5. Liquid inlet port; 6. Stomach inlet port; 7. Second port; 8. Stomach outlet port; 9. Drainage port; 10. Reversing rod; 11. Reversing flow channel; 12. Fixing groove; 13. Sliding block; 14. Fixing plate; 15. First mounting hole; 16. Connecting plate; 17. Second mounting hole; 18. Bolt; 19. Scale line; 20. Indicator mark; 21. Guide component; 22. Guide strip; 23. Guide groove; 24. Reversing drive; 25. Base plate; 26. Power source. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that, in the specific embodiments of this utility model, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the use of phrases such as "comprising one" to define an element does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "equipped" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example 1: As Figures 1 to 3 As shown:

[0022] A pneumatically driven reversing mechanism for a gastric lavage machine includes a housing 1, which is arranged horizontally. Within the housing 1 are a first channel 2 and a second channel 3, extending horizontally and symmetrically arranged front to back; both the right sides of the first and second channels open to the outside. A first port 4 for connecting a clean water tank is also provided on the rear side of the housing 1, specifically located on the rear left side of the housing. The first port 4 communicates with the first channel 2. A liquid inlet port 5 and a stomach inlet port 6 are also provided on the rear side of the housing 1, away from the first port 4, with a gap between them. This arrangement allows for loop switching between the first port-reversing channel-liquid inlet port or the first port-reversing channel-stomach inlet port via the movement of a reversing rod. A second port 7 is also provided on the front side of the housing 1, corresponding to the first port 4, for connecting a wastewater tank. On the front side of the housing 1, corresponding to the positions of the inlet port 5 and the stomach inlet port 6, a stomach outlet port 8 and a drain port 9 are respectively provided, and the second port 7, the stomach outlet port 8, and the drain port 9 are all connected to the second channel 3. This configuration allows for loop switching between the second port - reversing channel - stomach outlet port or the second port - reversing channel - drain port by moving the reversing rod. Reversing rods 10 are adapted and installed in both the first channel 2 and the second channel 3. Each reversing rod 10 has a reversing channel 11 with an L-shaped cross-section, specifically, the left end of the reversing channel is connected to the outside, meaning it can connect to either the first port or the second port within the corresponding channel. The reversing rod 10 is movable, so that the first port 4 can only be used selectively to maintain communication with either the inlet port 5 or the stomach inlet port 6; and the second port 7 can only be used selectively to maintain communication with either the stomach outlet port 8 or the drain port 9. This configuration results in a simple structural design and prevents cross-contamination of the pipeline.

[0023] In this embodiment, a guide member 21 is further provided between the reversing rod 10 and the first channel 2. The guide member 21 includes a guide strip 22 and a guide groove 23; the guide strip 22 is disposed on the reversing rod 10, and the guide groove 23 is formed in the first channel 2, ensuring that the guide strip 22 and the guide groove 23 are matched and installed. The purpose of this arrangement is to ensure the guiding stability of the reversing rod during movement. Preferably, an oil seal or sealing ring is also provided at the corresponding position of the connection between the reversing rod and the first or second channel; this arrangement is used to ensure the normal operation of the corresponding circuit.

[0024] In this embodiment, the outer end of the reversing rod 10 is also connected to a reversing drive 24. The reversing drive 24 includes a base plate 25 and a power source 26. The base plate 25 is connected to the two reversing rods 10 by screws. The power source 26 is disposed inside the housing 1 and is used to move the base plate 25. The power source 26 can be any one of a hydraulic push rod, a drive motor, or an air pump. In a preferred embodiment, a cylinder is used. With this configuration, the operator can control the cylinder to perform telescopic movements through the power source, thereby driving the two reversing rods to move back and forth, ultimately realizing the control of the inlet and outlet circuits of the corresponding gastric lavage machine. By adopting an integrated structure to connect the clean water tank and the wastewater tank separately, the two circuits are designed to be independent of each other. Furthermore, with the cooperation of the base plate, the power source, and the reversing rods, automated circuit switching is achieved, improving the safety and efficiency of gastric lavage, while avoiding cross-contamination of the liquids.

[0025] An electric gastric lavage machine uses an air pump to generate positive and negative pressure. This pressure drives a cylinder, causing a reversing lever to move and switch the ports for gastric lavage operations. Specifically, when the air pump generates negative pressure, it is introduced into the working chamber (clean water tank and waste water tank) via an electromagnetic reversing valve. Figure 2 As shown: Under negative pressure, the cylinder drives the reversing rod to move. Specifically, the inlet port 5 in the first channel 2 is connected to the first port 4 through the reversing channel 11. Due to the special structural design of the reversing rod, the first port 4 is not connected to the stomach inlet port 6. The second port 7 in the second channel 3 is connected to the stomach outlet port 8; the second port 7 is not connected to the drain port 9. At this time, the medicine in the clear water tank flows to the first port 4 through the inlet port 5 and the corresponding reversing channel 11; at the same time, the gastric waste in the stomach is sucked into the wastewater tank from the second port 7 through the stomach outlet port 8 and the corresponding reversing channel 11, which is the stomach outlet operation.

[0026] When the air pump of the electric gastric lavage machine generates positive pressure, it begins to fill the working chambers (clean water tank and waste water tank) with air. Under this positive pressure, the cylinder drive arm extends, causing the reversing rod 10 to move to the desired position. Figure 3The location is shown. At this time, the second port 7 is connected to the drain port 9, and the first port 4 is connected to the stomach inlet port 6; the medicine in the working chamber enters the stomach inlet port 6 through the first port 4 via the corresponding reversing channel 11, and finally enters the patient's stomach, which is the stomach inlet operation. At the same time, the sewage in the sewage tank enters the drain port 9 through the second port 7 via the corresponding reversing channel 11 and is discharged into the sewage bucket.

[0027] Example 2: Based on Example 1, such as Figure 4 The image shows a pneumatic powerful reversing mechanism for a gastric lavage machine, further comprising: a fixing groove 12 extending laterally on the outer side of the housing 1; a sliding block 13 preferably having a T-shaped structure being fitted and installed at the fixing groove 12; a fixing plate 14 having a Z-shaped structure being welded to the sliding block 13; a first mounting hole 15 on one side of the fixing plate 14 for connecting to the housing structure of the gastric lavage machine; a vertically distributed connecting plate 16 on one side of the fixing plate 14, with a second mounting hole 17 for connecting to the housing of this embodiment to achieve position fixation; bolts 18 are provided at both the first mounting hole 15 and the second mounting hole 17; a scale line 19 extending laterally is provided on one side of the fixing groove 12; and an indicator mark 20 is provided on one side of the connecting plate 16. This arrangement aims to adjust the distance between the fixing plate and the housing. The design incorporates a fixed groove and a movable fixing plate, optimizing the installation structure. This allows it to be installed in gastric lavage machine housings of different sizes, saving time and effort and enhancing practicality.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic power reversing mechanism for a gastric lavage machine, characterized by: The system includes a housing (1) with left and right sides. A first channel (2) and a second channel (3) are provided within the housing (1) and are symmetrically arranged extending left and right. A first port (4) for connecting a clean water tank is also provided on the rear side of the housing (1), and the first port (4) communicates with the first channel (2). An inlet port (5) and a stomach inlet port (6) are also provided on the rear side of the housing (1) away from the first port (4), with a gap between them. A second port (7) is also provided on the front side of the housing (1) corresponding to the first port (4), and the second port (7) is used to connect a sewage tank. A second port (7) is also provided on the front side of the housing (1) corresponding to the first port (4), and is used to connect to a sewage tank. At the locations of the inlet port (5) and the stomach inlet port (6), a stomach outlet port (8) and a drain port (9) are respectively provided, and the second port (7), the stomach outlet port (8) and the drain port (9) are all connected to the second channel (3); a reversing rod (10) is adapted to be installed in both the first channel (2) and the second channel (3), and a reversing flow channel (11) is also provided in the reversing rod (10). The cross-section of the reversing flow channel (11) is L-shaped, and the reversing rod (10) is movable so that the first port (4) can only be used to maintain communication with the inlet port (5) and the stomach inlet port (6); the second port (7) can only be used to maintain communication with the stomach outlet port (8) and the drain port (9).

2. The kind of pneumatic strong reversing mechanism for a stomach-washing machine according to claim 1, characterized in that: A fixing groove (12) is provided on the outside of the housing (1). The fixing groove (12) extends to the left and right. A sliding block (13) is also adapted to be installed in the fixing groove (12). A fixing plate (14) is connected to one side of the sliding block (13). The fixing plate (14) has a Z-shaped structure and is fixed to the sliding block (13) by welding. A first mounting hole (15) is provided on one side of the fixing plate (14). A vertically distributed connecting plate (16) is also provided on one side of the fixing plate (14). A second mounting hole (17) is opened on the connecting plate (16). Bolts (18) are provided at both the first mounting hole (15) and the second mounting hole (17).

3. The pneumatic high-power reversing mechanism for a gastric lavage machine according to claim 2, characterized in that: A scale line (19) extending left and right is provided on one side of the fixing groove (12); an indicator mark (20) is provided on one side of the connecting plate (16).

4. The pneumatic high-power reversing mechanism for a gastric lavage machine according to claim 1, characterized in that: A guide (21) is provided between the reversing rod (10) and the first channel (2). The guide (21) includes a guide bar (22) and a guide groove (23). The guide bar (22) is disposed on the reversing rod (10), and the guide groove (23) is opened in the first channel (2), and the guide bar (22) and the guide groove (23) are matched and installed.

5. The kind of pneumatic strong reversing mechanism for a stomach-washing machine according to claim 4, characterized in that: The outer end of the commutator (10) is also connected to a commutator drive (24), which includes a base plate (25) and a power source (26). The base plate (25) is connected to the two commutator (10) by screws. The power source (26) is located inside the housing (1) and is used to connect the base plate (25) to move.

6. The kind of pneumatic strong reversing mechanism for a stomach-washing machine according to claim 5, characterized in that: The power source (26) is any one of a hydraulic push rod, a driving motor and a gas pump. The power source (26) is any one of a hydraulic push rod, a driving motor and a gas pump.

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