Pediatric negative pressure gastric lavage device for pediatrician

Abstract

The invention discloses a pediatric department negative pressure gastric lavage device for pediatricians, and relates to the technical field of gastric lavage device.The pediatric department negative pressure gastric lavage device comprises a frame assembly, a container assembly is arranged in the frame assembly, an adjusting assembly is arranged at the top of the container assembly, a piston assembly is arranged in the container assembly, and the frame assembly comprises a base; the container assembly comprises an input container and an output container, and a first one-way valve and a fourth one-way valve are installed at the positions, close to the bottoms, of the outer surfaces of the opposite sides of the input container and the output container respectively. When the gastric lavage device is used, the positive pressure state and the negative pressure state in the input container and the output container can be circulated only by starting the driving motor, the gastric lavage liquid filling state and the gastric lavage liquid suction state are continuously and alternately carried out, manual switching and intervention are not needed, the automation degree is high, operation is convenient, the gastric lavage time of children is effectively shortened, and the working efficiency is improved. And discomfort of children caused by overlong gastric lavage time is avoided.

Description

Technical Field

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

[0002] The pediatric negative pressure gastric lavage device is an emergency device designed specifically for children, used to remove poisons or retained food in the stomach. Its core principle is to aspirate gastric contents under pressure through negative pressure suction, in cooperation with a gastric tube adapted to the esophageal structure of children. Pediatric gastric lavage is a key means to rescue children with food poisoning, accidental drug ingestion, etc.

[0003] Currently, when performing gastric lavage in pediatrics, due to the excessive pressure of traditional adult negative pressure gastric lavage equipment, it is easy to damage the esophageal and gastric mucosa of children. Therefore, most use a double-lumen gastric tube in cooperation with a syringe for manual operation. During the operation, the doctor needs to alternately use two syringes, one for injection and one for aspiration, repeatedly injecting gastric lavage fluid and aspirating the contaminated gastric lavage fluid in the stomach. Since this method requires frequent replacement of the syringe and emptying of the contaminated fluid, the operation is cumbersome and the efficiency is low, which will cause discomfort to children due to the prolonged gastric lavage time.

[0004] Therefore, a pediatric negative pressure gastric lavage device for pediatricians is proposed to solve the problems raised in the above background technique. Summary of the Invention

[0005] The purpose of the present invention is to provide a pediatric negative pressure gastric lavage device for pediatricians to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A pediatric negative pressure gastric lavage device for pediatricians, including a frame assembly. Inside the frame assembly, there is a container assembly. On the top of the container assembly, there is an adjustment assembly. Inside the container assembly, there is a piston assembly. The frame assembly includes a base. The container assembly includes an input container and an output container. On the outer surface of the opposite sides of the input container and the output container near the bottom, a first one-way valve and a fourth one-way valve are respectively installed. On the outer surface of the rear sides of the input container and the output container near the bottom, a second one-way valve and a fifth one-way valve are respectively installed. Between the rear ends of the second one-way valve and the fifth one-way valve, a double-lumen gastric tube is installed. On the top of the input container, a first top cover is installed. On the top of the output container, a second top cover is installed. The adjustment assembly includes two rotating covers, and the two rotating covers are respectively rotatably installed on the tops of the first top cover and the second top cover through bearings. The piston assembly includes a first piston and a second piston, and the first piston and the second piston are respectively slidably arranged at positions near the lower part inside the input container and the output container.

[0007] Preferably, the output end of the first one-way valve faces the input container, the input end of the second one-way valve faces the input container, the input end of the fourth one-way valve faces the output container, the input end of the fifth one-way valve faces the output container, and the two rotating covers are symmetrically arranged and are respectively arranged at the eccentric positions of the first top cover and the second top cover.

[0008] Preferably, the input container is installed at a position near the right side of the top of the base, the output container is installed at a position near the left side of the top of the base, universal wheels are installed at the bottom of the base near the four corners, a fastening ring is fixedly connected to the top of the base through a connecting rod, and the fastening ring is fixed at a position near the top between the outer surfaces of the input container and the output container.

[0009] Preferably, a motor bracket is installed on the front surface of the fastening ring, a driving motor is installed on the top of the motor bracket, the output end of the driving motor rotates through the top of the motor bracket and extends downward, and a driving gear is fixedly connected to the output end of the driving motor.

[0010] Preferably, driven gears are fixedly connected to the centers of the tops of the two rotating covers through brackets, the two driven gears are both meshed with the driving gear, the two driven gears are arranged without contact, the number of teeth on the surface of the driven gear is less than the number of teeth on the surface of the driving gear, a sliding groove is opened at the bottom of the rotating cover, the length of the sliding groove is less than the radius of the rotating cover and is located at the eccentric position at the bottom of the rotating cover, a sliding block is slidably connected between the inner walls of the sliding groove, and a first ball head seat is installed at the bottom of the sliding block.

[0011] Preferably, piston rods are fixedly connected to the tops of the first piston and the second piston, the two piston rods are symmetrically arranged and the tops are fixedly connected to a second ball head seat, the top of the second ball head seat is movably connected to a double ball rod, and the tops of the two double ball rods are respectively movably connected to the bottoms of the two first ball head seats.

[0012] Preferably, a lead screw is rotatably connected between the inner walls of the sliding groove, the outer surface of the lead screw threadedly penetrates the outer surface of the sliding block and one end of the lead screw is fixedly connected to a nut, and the nut is located outside the rotating cover.

[0013] Preferably, a pointer is fixedly connected to the top of the sliding block, an opening is opened at the top of the rotating cover to avoid the pointer, scales are arranged at the positions corresponding to the sliding groove on the top of the rotating cover, and the pointer is matched with the scales.

[0014] Preferably, a first partition layer and a second partition layer are respectively fixedly connected between the inner walls of the input container and the output container, and the outer surfaces of the two piston rods respectively slide through the outer surfaces of the first partition layer and the second partition layer.

[0015] Preferably, a communicating shell is fixedly connected at a position near the middle between the outer surfaces of the input container and the output container. A third one-way valve and a sixth one-way valve are respectively installed on the front sides of the outer surfaces of the input container and the output container. The output end of the third one-way valve faces the input container, and the output end of the sixth one-way valve faces the output container. A seventh one-way valve is installed on the left side of the outer surface of the output container, and the input end of the seventh one-way valve faces the output container. A three-way discharge pipe is installed between the output ends of the seventh one-way valve and the fourth one-way valve. The height of the communicating shell is higher than the maximum height of the first piston and the second piston. The bottoms of the first partition layer and the second partition layer are higher than the top of the communicating shell. The heights of the first one-way valve, the second one-way valve, the fourth one-way valve, and the fifth one-way valve are lower than the minimum height of the first piston and the second piston. The third one-way valve, the sixth one-way valve, and the seventh one-way valve all correspond to the height of the communicating shell.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the present invention is in use, only the driving motor needs to be started to make the internal positive and negative pressure states of the input container and the output container circulate, and the states of continuously and alternately perfusing gastric lavage fluid and aspirating gastric lavage fluid are carried out. There is no need for manual switching and intervention, the degree of automation is relatively high, the operation is convenient, the gastric lavage time of children is effectively shortened, and the discomfort caused by too long gastric lavage time is avoided.

[0017] 2. When the present invention is in use, through the cooperation of the nut, the screw rod, the sliding block, the first ball head seat, the double ball rod, the second ball head seat, the first piston and the second piston, the pressure peaks of the positive and negative pressures in the lower chambers inside the input container and the output container are adjusted, so as to achieve the purpose of adjusting the speed and pressure of aspirating and perfusing gastric lavage fluid. Moreover, the speed and pressure of aspiration or perfusion can be adjusted separately according to the actual situation, so as to be applicable to children of different ages, ensure the gastric lavage efficiency and avoid damage to the gastric mucosa of children.

[0018] 3. When the present invention is in use, after the middle chambers inside the input container and the output container are communicated by setting the communicating shell, through the cooperation of the third one-way valve, the sixth one-way valve and the seventh one-way valve, during the movement of the device, external air can be inhaled and discharged into the external waste liquid discharge pipeline through the three-way discharge pipe at the same time. The airflow discharged into the waste liquid pipe can flush the external waste liquid pipeline, avoid blockage of the waste liquid pipeline caused by the adhesion in the stomach, and ensure smooth liquid discharge.

[0019] 4. The overall structure of the present invention is simple, the cost is relatively low, the use flexibility is relatively high, and only one motor is used to supply driving force, which has the function of energy saving and is conducive to large-scale promotion and use in the market. Description of the Drawings

[0020] Figure 1Stereogram of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention; Figure 2 Top view of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention; Figure 3 Partial structural sectional view of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention; Figure 4 Schematic diagram of the frame assembly structure of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention; Figure 5 Stereogram of the container assembly of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention; Figure 6 Sectional view of the container assembly of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention; Figure 7 Stereogram of the container assembly of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention from another angle; Figure 8 Top view of the container assembly of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention; Figure 9 Sectional view of the adjustment assembly of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention; Figure 10 Schematic diagram of the piston assembly structure of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention; Figure 11 Schematic diagram of the movement of the piston assembly and the adjustment assembly of a pediatric negative pressure gastric lavage device for pediatricians according to the present invention.

[0021] In the figure: 1. Frame assembly; 101. Base; 102. Universal wheel; 103. Fastening ring; 104. Motor frame; 105. Driving motor; 106. Driving gear; 2. Container assembly; 201. Input container; 202. First partition; 203. First one-way valve; 204. Second one-way valve; 205. Third one-way valve; 206. First top cover; 207. Output container; 208. Second partition; 209. Fourth one-way valve; 210. Fifth one-way valve; 211. Sixth one-way valve; 212. Second top cover; 213. Connecting shell; 214. Seventh one-way valve; 215. Three-way discharge pipe; 216. Double-chamber gastric tube; 3. Adjustment assembly; 301. Rotating cover; 302. Sliding groove; 303. Sliding block; 304. Lead screw; 305. Nut; 306. First ball head seat; 307. Pointer; 308. Scale; 309. Driven gear; 4. Piston assembly; 401. Double ball rod; 402. Second ball head seat; 403. Piston rod; 404. First piston; 405. Second piston. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1: Please refer to Figures 1 - 11 As shown in the figure, the present invention provides a technical solution: a pediatric negative pressure gastric lavage device for pediatricians, including a frame assembly 1. Inside the frame assembly 1, a container assembly 2 is provided. At the top of the container assembly 2, an adjustment assembly 3 is provided. Inside the container assembly 2, a piston assembly 4 is provided. The frame assembly 1 includes a base 101. The container assembly 2 includes an input container 201 and an output container 207. At the positions near the bottom on the outer surfaces of the opposite sides of the input container 201 and the output container 207, a first one-way valve 203 and a fourth one-way valve 209 are respectively installed. At the positions near the bottom on the rear outer surfaces of the input container 201 and the output container 207, a second one-way valve 204 and a fifth one-way valve 210 are respectively installed. Between the rear ends of the second one-way valve 204 and the fifth one-way valve 210, a double-chamber gastric tube 216 is installed. At the top of the input container 201, a first top cover 206 is installed. At the top of the output container 207, a second top cover 212 is installed. The adjustment assembly 3 includes two rotating covers 301. The two rotating covers 301 are respectively rotatably installed on the tops of the first top cover 206 and the second top cover 212 through bearings. The piston assembly 4 includes a first piston 404 and a second piston 405. The first piston 404 and the second piston 405 are respectively slidably arranged at positions near the lower part inside the input container 201 and the output container 207.

[0024] The output end of the first one-way valve 203 faces the input container 201. The input end of the second one-way valve 204 faces the input container 201. The input end of the fourth one-way valve 209 faces the output container 207. The input end of the fifth one-way valve 210 faces the output container 207. The two rotating covers 301 are symmetrically arranged and are respectively arranged at eccentric positions on the first top cover 206 and the second top cover 212.

[0025] The input container 201 is installed at a position near the right side on the top of the base 101. The output container 207 is installed at a position near the left side on the top of the base 101. At the four corners near the bottom of the base 101, universal wheels 102 are respectively installed. On the top of the base 101, a fastening ring 103 is fixedly connected through a connecting rod. The fastening ring 103 is fixed at a position near the top between the outer surfaces of the input container 201 and the output container 207.

[0026] The front surface of the fastening ring 103 is provided with a motor mount 104, the top of the motor mount 104 is provided with a driving motor 105, the output end of the driving motor 105 rotates through the top of the motor mount 104 and extends downward, and the output end of the driving motor 105 is fixedly connected with a driving gear 106.

[0027] At the center of the top of both rotating covers 301, there are driven gears 309 fixedly connected through brackets. Both driven gears 309 are meshed with the driving gear 106. The two driven gears 309 are arranged without contact. The number of teeth on the surface of the driven gear 309 is less than the number of teeth on the surface of the driving gear 106. A sliding groove 302 is formed at the bottom of the rotating cover 301. The length of the sliding groove 302 is less than the radius of the rotating cover 301 and is located at an eccentric position at the bottom of the rotating cover 301. A sliding block 303 is slidably connected between the inner walls of the sliding groove 302, and a first ball head seat 306 is installed at the bottom of the sliding block 303.

[0028] Piston rods 403 are fixedly connected to the tops of the first piston 404 and the second piston 405. The two piston rods 403 are symmetrically arranged and the tops are fixedly connected with a second ball head seat 402. The top of the second ball head seat 402 is movably connected with a double ball rod 401. The tops of the two double ball rods 401 are respectively movably connected with the bottoms of the two first ball head seats 306.

[0029] Steps of using the present invention: When the device is in use, it is convenient to push the device for movement under the action of the universal wheels 102. The fastening ring 103 is used to improve the connection strength between the input container 201 and the output container 207. The motor bracket 104 is used to install the driving motor 105. The double-chamber gastric tube 216 is in a Y shape with two internal channels, namely the perfusion channel and the suction channel. Inside the input container 201, the upper chamber, the middle chamber, and the lower chamber are separated from top to bottom by the first partition layer 202 and the first piston 404. Similarly, inside the output container 207, the upper chamber, the middle chamber, and the lower chamber are separated from top to bottom by the second partition layer 208 and the second piston 405. The first one-way valve 203, the second one-way valve 204, the third one-way valve 205, the fourth one-way valve 209, the fifth one-way valve 210, the sixth one-way valve 211, and the seventh one-way valve 214 only allow the fluid to flow from the input end to the output end and prohibit the flow from the output end to the input end. When using this device to wash the stomach of a pediatric food poisoning child, the input end of the first one-way valve 203 is connected to an external container filled with gastric lavage fluid through an external tube, and the discharge port of the three-way discharge pipe 215 is connected to an external container for discharging waste liquid through a tube. Then, the soft head of the double-chamber gastric tube 216 is placed in the child's stomach. Subsequently, the driving motor 105 is started. The driving motor 105 will drive the driving gear 106 to rotate, and the driving gear 106 will simultaneously drive the two driven gears 309 to rotate synchronously. When the two driven gears 309 rotate, they will drive the two rotating covers 301 to rotate. At this time, the two rotating covers 301 will drive the upper ends of the double-ball rods 401 in the input container 201 and the output container 207 to perform circular motion through the sliding blocks 303 and the first ball head seats 306. And the upper ends of the double-ball rods 401 are located at positions deviating from the center in the input container 201 and the output container 207. Since the bottom ends of the double-ball rods 401 are movably connected to the piston rods 403 through the second ball head seats 402, and the piston rods 403 are limited by the first partition layer 202 and the second partition layer 208 and can only move up and down. Therefore, when the top end of the double-ball rod 401 approaches the piston rod 403, the inclination angle is small, and it will push the piston rod 403 downward. When the top end of the double-ball rod 401 is far from the piston rod 403, the inclination angle is large, and it will pull the piston rod 403 upward, so as to drive the piston rod 403 to perform reciprocating up and down motion. During this process, the two piston rods 403 will simultaneously drive the first piston 404 inside the input container 201 and the second piston 405 inside the output container 207 to perform reciprocating up and down motion synchronously. When the first piston 404 and the second piston 405 move upward, the volume of the lower lower chamber inside the input container 201 and the output container 207 increases, forming a negative pressure. As a result, the output end of the first one-way valve 203 will suck the gastric lavage fluid into the input container 201 through an external pipeline, and the input end of the fifth one-way valve 210 will suck the contaminated gastric lavage fluid in the child's stomach into the output container 207 through the suction channel in the double-chamber gastric tube 216.During the process, the perfusion channel inside the double-lumen gastric tube 216 is in a state of suspended perfusion. When the first piston 404 and the second piston 405 move downward, the lower cavity volume inside the input container 201 and the output container 207 decreases, forming a positive pressure. As a result, the gastric lavage fluid in the input container 201 is discharged through the second one-way valve 204 and perfused into the child's stomach through the perfusion channel in the double-lumen gastric tube 216 for gastric lavage. During this process, the suction channel inside the double-lumen gastric tube 216 is in a state of suspended suction, and the contaminated gastric lavage fluid in the output container 207 will be discharged from the fourth one-way valve 209 under the action of the positive pressure. Finally, the contaminated gastric lavage fluid is discharged into an external waste liquid container through the three-way discharge pipe 215 and the external pipeline. During the entire use process, only by starting the drive motor 105 can the internal positive and negative pressure states of the input container 201 and the output container 207 be cycled, and the states of perfusing gastric lavage fluid and sucking gastric lavage fluid can be continuously alternated. There is no need for manual switching and intervention, with a high degree of automation, convenient operation, effectively shortening the gastric lavage time for children, avoiding discomfort caused by too long gastric lavage time. The overall structure of this device is simple, with a low cost, high flexibility in use, and only one motor is required to supply driving force, which has the effect of energy saving and is conducive to large-scale promotion and use in the market.

[0030] Embodiment 2: As Figures 1 - 3 and Figure 9 shown, the difference based on the combination of the embodiments lies in that a lead screw 304 is rotatably connected between the inner surfaces of the sliding grooves 302. The outer surface of the lead screw 304 threadedly penetrates the outer surface of the sliding block 303, and one end of the lead screw 304 is fixedly connected to a nut 305, and the nut 305 is located outside the rotating cover 301.

[0031] A pointer 307 is fixedly connected to the top of the sliding block 303. An opening is provided at the top of the rotating cover 301 to avoid the pointer 307. A scale 308 is provided at the position corresponding to the top of the rotating cover 301 and the sliding groove 302, and the pointer 307 cooperates with the scale 308.

[0032] The usage steps of the present invention are as follows: Rotating the nut 305 drives the screw rod 304 inside the sliding groove 302 to rotate, which drives the sliding block 303 to move closer to or away from the center of the rotating cover 301, achieving the effect of changing the moving range of the upper end of the double ball rod 401. When the moving range of the upper end of the double ball rod 401 shrinks, the difference between the maximum inclination angle and the minimum inclination angle will decrease, so that the stroke and moving speed of the lower-connected first piston 404 or second piston 405 within the same time will decrease. Conversely, when the moving range of the upper end of the double ball rod 401 increases after adjustment, the stroke and moving speed of the first piston 404 and the second piston 405 within the same time will increase. By adjusting the moving stroke and moving speed of the first piston 404 and the second piston 405, the peak pressures of the positive pressure and negative pressure in the lower chambers of the input container 201 and the output container 207 can be adjusted, thereby achieving the purpose of adjusting the speed and pressure of aspirating and perfusing the gastric lavage fluid. Moreover, the speed and pressure of aspiration or perfusion can be adjusted separately according to the actual situation, so as to be suitable for children of different ages, ensuring the gastric lavage efficiency while avoiding damage to the gastric mucosa of children. At the same time, during the movement of the sliding block 303, the pointer 307 on its top will move accordingly, and the position of the pointer 307 can be observed through the scale 308, thereby judging the adjustment distance of the sliding block 303.

[0033] Embodiment 3: As Figures 1 - 3 and Figures 5 - 8 shown, the difference based on the combination of the embodiments lies in that a first partition 202 and a second partition 208 are respectively fixedly connected between the inner walls of the input container 201 and the output container 207, and the outer surfaces of the two piston rods 403 respectively slide through the outer surfaces of the first partition 202 and the second partition 208.

[0034] A communicating shell 213 is fixedly connected at a position near the middle between the outer surfaces of the input container 201 and the output container 207. A third one-way valve 205 and a sixth one-way valve 211 are respectively installed on the front sides of the outer surfaces of the input container 201 and the output container 207. The output end of the third one-way valve 205 faces the input container 201, and the output end of the sixth one-way valve 211 faces the output container 207. A seventh one-way valve 214 is installed on the left side of the outer surface of the output container 207, and the input end of the seventh one-way valve 214 faces the output container 207. A three-way discharge pipe 215 is installed between the output ends of the seventh one-way valve 214 and the fourth one-way valve 209. The height of the communicating shell 213 is higher than the maximum height of the first piston 404 and the second piston 405. The bottoms of the first partition 202 and the second partition 208 are higher than the top of the communicating shell 213. The heights of the first one-way valve 203, the second one-way valve 204, the fourth one-way valve 209, and the fifth one-way valve 210 are lower than the minimum height of the first piston 404 and the second piston 405. The third one-way valve 205, the sixth one-way valve 211, and the seventh one-way valve 214 all correspond to the height of the communicating shell 213.

[0035] The using steps of the present invention are as follows. The inner cavities of the input container 201 and the output container 207 are connected through the communication shell 213. When the first piston 404 and the second piston 405 descend, the volume of the inner cavity increases and forms a negative pressure state. The outside air enters the inner cavity through the third one-way valve 205 and the sixth one-way valve 211 to balance the pressure. When the first piston 404 and the second piston 405 ascend, the volume of the inner cavity decreases and the pressure increases, so as to discharge the air through the seventh one-way valve 214. The discharged air enters the external waste liquid discharge pipeline through the three-way discharge pipe 215, and the air flow discharged into the waste liquid pipe can wash the external waste liquid pipeline, avoiding the blockage of the waste liquid pipeline caused by the adhesion in the stomach, and ensuring smooth liquid discharge.

[0036] The effects achieved by the entire mechanism and its working principle are as follows: Inside the input container 201, the first partition layer 202 and the first piston 404 divide it into an upper chamber, a middle chamber, and a lower chamber arranged from top to bottom. Similarly, inside the output container 207, the second partition layer 208 and the second piston 405 divide it into an upper chamber, a middle chamber, and a lower chamber arranged from top to bottom. The first one-way valve 203, the second one-way valve 204, the third one-way valve 205, the fourth one-way valve 209, the fifth one-way valve 210, the sixth one-way valve 211, and the seventh one-way valve 214 only allow fluid to flow from the input end to the output end and prohibit flow from the output end to the input end. When using this device to wash the stomach of a child with pediatric food poisoning, the input end of the first one-way valve 203 is connected to an external container filled with gastric lavage fluid through an external tube, and the discharge port of the three-way discharge pipe 215 is connected to an external container for discharging waste liquid through a tube. Then, the soft head of the double-chamber gastric tube 216 is placed in the child's stomach. Subsequently, the drive motor 105 is started. The drive motor 105 drives the drive gear 106 to rotate, and the drive gear 106 simultaneously drives two driven gears 309 to rotate synchronously. When the two driven gears 309 rotate, they drive two rotating covers 301 to rotate. At this time, the two rotating covers 301 drive the upper ends of the double-ball rods 401 in the input container 201 and the output container 207 to perform circular motion through the sliding blocks 303 and the first ball head seats 306. Moreover, the upper ends of the double-ball rods 401 are located at positions deviating from the center in the input container 201 and the output container 207. Since the bottom ends of the double-ball rods 401 are movably connected to the piston rods 403 through the second ball head seats 402, and the piston rods 403 are limited by the first partition layer 202 and the second partition layer 208 and can only move up and down, when the top ends of the double-ball rods 401 approach the piston rods 403, the inclination angle is smaller, and they will push the piston rods 403 downward. When the top ends of the double-ball rods 401 are far from the piston rods 403, the inclination angle is larger, and they will pull the piston rods 403 upward, thereby achieving the purpose of driving the piston rods 403 to reciprocate up and down. During this process, the two piston rods 403 simultaneously drive the first piston 404 inside the input container 201 and the second piston 405 inside the output container 207 to reciprocate up and down synchronously. When the first piston 404 and the second piston 405 move upward, the volume of the lower chambers inside the input container 201 and the output container 207 increases, forming a negative pressure. As a result, the output end of the first one-way valve 203 will suck the gastric lavage fluid into the input container 201 through an external pipeline, and the input end of the fifth one-way valve 210 will suck the contaminated gastric lavage fluid in the child's stomach into the output container 207 through the suction channel in the double-chamber gastric tube 216. During this process, the perfusion channel inside the double-chamber gastric tube 216 is in a suspended perfusion state. When the first piston 404 and the second piston 405 move downward, the volume of the lower chambers inside the input container 201 and the output container 207 decreases, forming a positive pressure.As a result, the gastric lavage fluid in the input container 201 is discharged through the second one-way valve 204 and perfused into the child's stomach through the perfusion channel in the double-lumen gastric tube 216 for gastric lavage. During this process, the suction channel inside the double-lumen gastric tube 216 is in a suspended suction state, while the contaminated gastric lavage fluid in the output container 207 will be discharged from the fourth one-way valve 209 under the action of positive pressure, and finally the contaminated gastric lavage fluid is discharged into an external waste liquid container through the three-way discharge pipe 215 and the external pipeline. During the whole use process, only by starting the drive motor 105 can the positive pressure and negative pressure states inside the input container 201 and the output container 207 be circulated, and the states of perfusing gastric lavage fluid and sucking gastric lavage fluid can be continuously alternated, without manual switching and intervention, with a high degree of automation, convenient operation, effectively shortening the gastric lavage time for children and avoiding discomfort caused to children due to too long gastric lavage time; And during the use of this device, the screw rod 304 inside the sliding groove 302 can be rotated by rotating the nut 305. Under the action of the thread on the surface of the screw rod 304, the sliding block 303 will move closer to or away from the center of the rotating cover 301, achieving the effect of changing the moving range of the upper end of the double-ball rod 401. When the moving range of the upper end of the double-ball rod 401 is reduced, the difference between its maximum inclination angle and minimum inclination angle will decrease, so that the stroke and moving speed of the lower-connected first piston 404 or second piston 405 within the same time will decrease. On the contrary, when the moving range of the upper end of the double-ball rod 401 increases after adjustment, the stroke and moving speed of the first piston 404 and the second piston 405 within the same time will increase. By adjusting the moving stroke and moving speed of the first piston 404 and the second piston 405, the peak values of the positive pressure and negative pressure in the lower chambers inside the input container 201 and the output container 207 can be adjusted, thereby achieving the purpose of adjusting the speed and pressure of sucking and perfusing gastric lavage fluid, and the speed and pressure of sucking or perfusing can also be adjusted separately according to the actual situation, so as to be applicable to children of different ages, ensuring the gastric lavage efficiency while avoiding damage to the gastric mucosa of children. At the same time, during the movement of the sliding block 303, the pointer 307 on its top will move accordingly, and the position of the pointer 307 can be observed through the scale 308, so as to judge the adjustment distance of the sliding block 303; During the use of this device, the middle cavities at the middle positions inside the input container 201 and the output container 207 are connected through the communication shell 213. When the first piston 404 and the second piston 405 descend, the volumes of the middle cavities inside the input container 201 and the output container 207 increase and form a negative pressure state. At this time, the outside air will enter the middle cavity through the third one-way valve 205 and the sixth one-way valve 211 to balance the pressure. When the first piston 404 and the second piston 405 ascend, the pressure in the middle cavities of the input container 201 and the output container 207 increases and the air is discharged through the seventh one-way valve 214. At this time, the discharged air will enter the external waste liquid discharge pipeline through the three-way discharge pipe 215, and the airflow discharged into the waste liquid pipe can wash the external waste liquid pipeline, avoiding the blockage of the waste liquid pipeline caused by the adhesion assistance in the stomach and ensuring smooth liquid discharge.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pediatric negative pressure gastric lavage device for pediatricians, comprising a frame assembly (1), characterized in that: Inside the frame component (1), a container component (2) is provided. At the top of the container component (2), an adjustment component (3) is provided. Inside the container component (2), a piston component (4) is provided; The frame component (1) includes a base (101); The container component (2) includes an input container (201) and an output container (207). At positions near the bottom on the outer surfaces of the opposite sides of the input container (201) and the output container (207), a first one-way valve (203) and a fourth one-way valve (209) are respectively installed. At positions near the bottom on the rear outer surfaces of the input container (201) and the output container (207), a second one-way valve (204) and a fifth one-way valve (210) are respectively installed. Between the rear ends of the second one-way valve (204) and the fifth one-way valve (210), a double-lumen gastric tube (216) is installed. At the top of the input container (201), a first top cover (206) is installed. At the top of the output container (207), a second top cover (212) is installed; The adjustment component (3) includes two rotating covers (301). The two rotating covers (301) are respectively rotatably installed on the tops of the first top cover (206) and the second top cover (212) through bearings; The piston component (4) includes a first piston (404) and a second piston (405). The first piston (404) and the second piston (405) are respectively slidably arranged at positions near the lower part inside the input container (201) and the output container (207).

2. The pediatric negative pressure gastric lavage device for pediatricians according to claim 1, characterized in that: The output end of the first one-way valve (203) faces the input container (201). The input end of the second one-way valve (204) faces the input container (201). The input end of the fourth one-way valve (209) faces the output container (207). The input end of the fifth one-way valve (210) faces the output container (207). The two rotating covers (301) are symmetrically arranged and are respectively arranged at eccentric positions on the first top cover (206) and the second top cover (212).

3. The pediatric negative pressure gastric lavage device for pediatricians according to claim 1, characterized in that: The input container (201) is installed at a position near the right side on the top of the base (101). The output container (207) is installed at a position near the left side on the top of the base (101). Universal wheels (102) are installed at the bottom of the base (101) near the four corners. At the top of the base (101), a fastening ring (103) is fixedly connected through a connecting rod. The fastening ring (103) is fixed at a position near the top between the outer surfaces of the input container (201) and the output container (207).

4. The pediatric negative pressure gastric lavage device for pediatricians according to claim 3, characterized in that: On the front surface of the fastening ring (103), a motor bracket (104) is installed. At the top of the motor bracket (104), a driving motor (105) is installed. The output end of the driving motor (105) rotatably penetrates through the top of the motor bracket (104) and extends downward. The output end of the driving motor (105) is fixedly connected to a driving gear (106).

5. The pediatric negative pressure gastric lavage device for pediatricians according to claim 1, wherein: At the center of the top of each of the two rotating covers (301), a driven gear (309) is fixedly connected through a bracket. The two driven gears (309) are both meshed with a driving gear (106). The two driven gears (309) are arranged without contact. The number of teeth on the surface of the driven gear (309) is less than the number of teeth on the surface of the driving gear (106). A sliding groove (302) is formed at the bottom of the rotating cover (301). The length of the sliding groove (302) is less than the radius of the rotating cover (301) and is located at an eccentric position at the bottom of the rotating cover (301). A sliding block (303) is slidably connected between the inner walls of the sliding groove (302). A first ball head seat (306) is installed at the bottom of the sliding block (303).

6. The pediatric negative pressure gastric lavage device for pediatricians according to claim 1, characterized in that: Piston rods (403) are fixedly connected to the tops of the first piston (404) and the second piston (405). The two piston rods (403) are symmetrically arranged and a second ball head seat (402) is fixedly connected to the top ends. The top end of the second ball head seat (402) is movably connected to a double ball rod (401). The top ends of the two double ball rods (401) are respectively movably connected to the bottoms of the two first ball head seats (306).

7. The pediatric negative pressure gastric lavage device for pediatricians according to claim 5, characterized in that: A lead screw (304) is rotatably connected between the inner walls of the sliding groove (302). The outer surface of the lead screw (304) threadedly penetrates through the outer surface of the sliding block (303), and one end of the lead screw (304) is fixedly connected to a nut (305). The nut (305) is located outside the rotating cover (301).

8. The pediatric negative pressure gastric lavage device for pediatricians according to claim 5, characterized in that: A pointer (307) is fixedly connected to the top of the sliding block (303). An opening is formed at the top of the rotating cover (301) to avoid the pointer (307). A scale (308) is arranged at the position corresponding to the sliding groove (302) on the top of the rotating cover (301). The pointer (307) cooperates with the scale (308).

9. The pediatric negative pressure gastric lavage device for pediatricians according to claim 6, characterized in that: A first partition (202) and a second partition (208) are respectively fixedly connected between the inner walls of the input container (201) and the output container (207). The outer surfaces of the two piston rods (403) respectively slide through the outer surfaces of the first partition (202) and the second partition (208).

10. The pediatric negative pressure gastric lavage device for pediatricians according to claim 9, characterized in that: A communication shell (213) is fixedly connected at a position near the middle between the outer surfaces of the input container (201) and the output container (207). A third one-way valve (205) and a sixth one-way valve (211) are respectively installed on the front sides of the outer surfaces of the input container (201) and the output container (207). The output end of the third one-way valve (205) faces the input container (201), and the output end of the sixth one-way valve (211) faces the output container (207). A seventh one-way valve (214) is installed on the left side of the outer surface of the output container (207), and the input end of the seventh one-way valve (214) faces the output container (207). A three-way discharge pipe (215) is installed between the output ends of the seventh one-way valve (214) and the fourth one-way valve (209). The height of the communication shell (213) is higher than the maximum height of the first piston (404) and the second piston (405). The bottoms of the first partition layer (202) and the second partition layer (208) are higher than the top of the communication shell (213). The heights of the first one-way valve (203), the second one-way valve (204), the fourth one-way valve (209), and the fifth one-way valve (210) are lower than the minimum height of the first piston (404) and the second piston (405). The third one-way valve (205), the sixth one-way valve (211), and the seventh one-way valve (214) all correspond to the height of the communication shell (213).

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