CN117554556B - A gastric juice acidity detection device for digestive system - Google Patents

Abstract

The invention relates to the field of gastric juice detection tools. A gastric juice acidity detection device for a digestive system comprises a negative pressure suction device and a detection device. The detection device comprises a dripping device and a base. A rotatable rotating table is arranged on the base. The rotating table is connected to a sampling box. When the rotating table rotates, the sampling box is driven to move in a circular arc track. The beneficial effects of the invention are as follows: an opening is arranged at the lower end of a negative pressure suction bottle so that the internal space of the negative pressure suction bottle can be connected with the external space, so that negative pressure cannot be generated in the negative pressure suction bottle, resulting in that a gastric tube connected to the negative pressure suction bottle cannot extract gastric juice from a patient's body. Only after the opening at the lower end of the negative pressure suction bottle is blocked by the sampling box, the internal space in the negative pressure suction bottle cannot be connected with the external space, so that the negative pressure suction bottle cannot obtain air from a channel other than the gastric tube, so that the extraction of gastric juice is simpler, and the process of pouring the extracted gastric juice into the sampling box is more convenient.

Description

A gastric juice acidity detection device for digestive system

Technical Field

The invention relates to the field of gastric juice detection tools, in particular to a gastric juice acidity detection device used in a digestive system.

Background technique

In clinical applications, gastric tubes are often used for gastrointestinal decompression, gastrointestinal nutrition and gastric lavage. Gastric acid can remove bacteria in food, kill cells in the stomach, activate gastrinogen, and provide the acidic environment it needs. After entering the small intestine, it can also promote the release of pancreatic hormone, thereby promoting the secretion of pancreatic juice, bile and small intestinal juice, ensuring the safety of the stomach and intestines and helping digestion. At the same time, changes in stomach acidity can affect the normal absorption of various nutrients in the intestines. Therefore, gastric acid is extremely important to the human digestive environment. The pH of normal gastric juice is 0.9-1.8, and pH 3.5-7.0 is low acid. In the process of testing gastric acid, the patient needs to empty his stomach and then inject pentagastrin into the patient's stomach. After the administration, gastric juice needs to be continuously extracted for one hour, one portion every fifteen minutes, for a total of four portions. During the test, the gastric juice needs to be poured from the negative pressure suction bottle into a sampling box or a gastric juice acidity detection device to test the acidity of the gastric juice. A gastric acidity detection device for gastroenterology has been retrieved, with application number CN201910028078.7, comprising a base, a detection platform, a pressure plate, a piston rod, a support spring, a cylinder, a piston, a drip head and a reagent cup. The detection platform is rotatably mounted on the base, and a plurality of detection slots distributed in a circular array are provided on the upper surface of the detection platform; a column is fixedly mounted on the upper surface of the left end of the base, and a support top plate is horizontally fixedly mounted on the top of the column; the cylinder is fixedly mounted on the bracket, wherein the bracket is fixedly mounted on the support top plate; a piston is arranged in the cylinder, and the support spring is compressed by pressing the pressure plate, so that the gas in the cylinder is discharged through the drip head, and when the pressure plate is released, under the action of the support spring, the piston moves upward in the cylinder, so that the reagent in the reagent cup enters the cylinder through the infusion pipeline, and the pressure plate is pressed again to discharge the reagent in the cylinder and drip into the detection slot, thereby facilitating the titration test of gastric juice.

However, in the above technical solution, the extraction and sampling of gastric juice and the dripping of reagents cannot be performed simultaneously, and after the patient's gastric juice is extracted into the negative pressure suction bottle, it is also very inconvenient to pour the gastric juice from the negative pressure suction bottle into the sampling box, the operation is complicated and the efficiency is low.

Summary of the invention

The problem to be solved by the present invention is to make gastric juice extraction and reagent dripping more convenient, reduce manual operations and improve efficiency.

To achieve the above-mentioned purpose, the technical solution adopted by the present invention is a gastric juice acidity detection device for the digestive system, comprising a negative pressure suction device and a detection device, the negative pressure suction device extracts gastric juice to the detection device, the detection device comprises a dripping device and a base, the dripping device comprises a cylinder and a piston, the piston is located in the cylinder, a dripping head is arranged at the lower end of the cylinder, an infusion tube is connected to the side wall of the cylinder, a reagent cup is connected to the other end of the infusion tube, a one-way valve is arranged on the dripping head and the infusion tube, a support frame and a rotating table are arranged on the base, the rotating table is connected to a sampling box, and the sampling box is driven to move in a circular arc trajectory when the rotating table rotates, and a power assembly is also arranged on the base, the power assembly comprises a servo motor and a gear cylinder, the gear cylinder is meshed with the servo motor, and the gear cylinder is fixedly connected to the rotating table;

The negative pressure suction device includes a negative pressure suction bottle located above the sampling box, the negative pressure suction bottle is connected to the support frame through a limiting structure, the negative pressure suction bottle is connected to a gastric tube and a negative pressure suction machine, the negative pressure suction bottle is funnel-shaped, the upper end of the negative pressure suction bottle is a closed end, and the lower end has an opening, when the sampling box contacts the opening at the lower end of the negative pressure suction bottle, a closed space is formed inside the negative pressure suction bottle, the negative pressure suction machine extracts gastric juice into the suction bottle, when the opening at the lower end of the negative pressure suction bottle is separated from the sampling box, the gastric juice in the negative pressure suction bottle drips into the sampling box, and the sampling box moves to the bottom of the dripping device as the rotating table rotates;

The detection device also includes a lifting power assembly, which is connected to the dripping device, and the lifting power assembly can control the contact and separation of the sampling box and the opening at the lower end of the negative pressure suction bottle;

The negative pressure suction device and the detection device are also connected with system components.

More preferably, four diagonal tie rods are arranged on the rotating platform, and the four diagonal tie rods are arranged in a circular array with the rotating platform as the center. A placement ring is provided at the end of the diagonal tie rod, and a limit opening is provided on the placement ring.

More preferably, a sampling box is arranged inside the placement ring, and a protruding column is arranged on the outer wall of the sampling box, and the protruding column is engaged in the limiting opening.

More preferably, the lifting power assembly includes a cylinder and a lifting platform, the lifting platform is connected to the bottom of the rotating table, a central shaft is arranged on the lifting platform, and the central shaft is connected to the dripping device.

More preferably, the lifting power assembly includes a vertical square plate and a transverse positioning plate arranged on the support frame, the lower end surface of the transverse positioning plate is connected to a cylinder, and the other end of the cylinder is connected to the limiting structure.

More preferably, the limiting structure includes a limiting ring arranged on the support frame, an internal thread arranged on the inner wall of the limiting ring, and an external thread arranged on the outer wall of the negative pressure suction bottle.

More preferably, the limiting structure includes a limiting ring arranged on the support frame, the limiting ring is provided with a U-shaped rod, the U-shaped rod is provided with a clamping piece slideway, the clamping piece slideway is provided with clamping teeth, and the clamping piece slideway is connected with a limiting clamping piece.

More preferably, the limit engaging member includes a limit handle and a top engaging head, the top engaging head is provided with a push switch, the limit handle is provided with a groove and a through hole, the top engaging head is connected in the groove through a compression reset spring group and extends outward from the through hole.

More preferably, a cleaning device is also provided on the base, the cleaning device includes a screw dragon and a conveying sleeve, the conveying sleeve is provided with a rectangular opening and an insertion rod, the insertion rod is axially connected to the rectangular opening, and the insertion rod can be flipped in the rectangular opening, a conveying channel is provided in the insertion rod, the end of the insertion rod is axially connected to a cleaning rod, a cleaning channel and a cleaning hole are provided in the cleaning rod, and the cleaning channel is connected to the conveying channel.

Compared with the prior art, the beneficial effects of the present invention are as follows: by providing an opening at the lower end of the negative pressure suction bottle, the internal space of the negative pressure suction bottle can be communicated with the external space, and the external air can enter the negative pressure suction bottle from the opening, so that negative pressure cannot be generated in the negative pressure suction bottle, resulting in the stomach tube connected to the negative pressure suction bottle being unable to extract gastric juice from the patient's body. Only after the opening at the lower end of the negative pressure suction bottle is blocked by the sampling box, the internal space of the negative pressure suction bottle cannot be communicated with the external space, so that the negative pressure suction bottle cannot obtain air from the channel other than the stomach tube. At this time, the negative pressure suction machine is started to extract the gastric juice in the negative pressure suction bottle. The gastric tube will extract the gastric juice in the patient's body into the negative pressure suction bottle. After the gastric juice enters the negative pressure suction bottle, since the overall structure of the negative pressure suction bottle is funnel-shaped, the gastric juice will flow along the side wall of the negative pressure suction bottle to the opening at the lower end of the negative pressure suction bottle. When the sampling box is separated from the opening at the lower end of the sampling bottle, the gastric juice will flow downward through the opening and fall into the sampling box. Then, the sampling box containing the gastric juice is rotated to the bottom of the dripping device through the rotating table, and the reagent is dripped into the sampling box through the dripping device, so that the extraction of gastric juice is simpler, and the process of pouring the extracted gastric juice into the sampling box is more convenient, the operation is simple, and the labor cost is saved.

Furthermore, since the power component can control the rotating table to drive the sampling box to rotate so that the sampling box rotates to the bottom of the dripping device, and the lifting power component can control the sampling box to contact and separate with the opening of the negative pressure suction bottle, and can also control the dripping device to drip reagents into the sampling box, gastric juice extraction and gastric juice detection can be carried out simultaneously, and since the negative pressure suction device and the detection device are connected with system components, the timing control function of the system components can realize automatic timing extraction of gastric juice and dripping of reagents into the gastric juice, which greatly reduces the manual operation time, and no longer requires medical staff to supervise the one-hour gastric juice sampling process throughout the whole process, and can avoid the delay of sampling interval time caused by the large number of patients, forgetfulness or other unexpected situations of medical staff, etc., and the four gastric juice extractions after the injection of pentagastrin can be made more timely and accurate by timing the switch of the negative pressure suction device and the detection device through the system components;

Furthermore, since the negative pressure sampling bottle in the present invention has a special shape and is not easy to clean, a cleaning device is provided on the base to make the cleaning process of the negative pressure sampling bottle more convenient.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the base structure of the present invention;

FIG2 is a schematic diagram of the overall structure of the present invention from a front view;

FIG3 is a schematic structural diagram of a liquid dripping device according to the present invention;

FIG4 is a schematic diagram of the lifting platform structure of the present invention;

FIG5 is a schematic diagram of the structure of the sampling box of the present invention;

FIG6 is a schematic diagram of the limit opening structure of the present invention;

FIG7 is a schematic diagram of the overall structure of the cleaning device of the present invention;

FIG8 is a schematic diagram of the structure of the delivery sleeve of the present invention;

FIG9 is a schematic diagram of the structure of the plug rod of the present invention in an open state;

FIG10 is a schematic diagram of the structure of the rod merging state of the present invention;

FIG11 is a schematic structural diagram of a second embodiment of the present invention;

FIG12 is an enlarged structural schematic diagram of a position-limiting engaging member of the present invention;

FIG13 is a schematic diagram of the connection structure of the position-limiting engaging member of the present invention;

FIG14 is a schematic structural diagram of a fourth embodiment of the present invention;

FIG15 is a top view of a tie rod in a fourth embodiment of the present invention;

Among them, 1-negative pressure suction machine, 2-gastric tube, 3-negative pressure suction bottle, 4-drainage channel, 5-base, 6-rotating table, 7-inclined rod, 8-placing ring, 9-limiting port, 10-sampling box, 11-silicone pad, 12-protruding column, 13-support frame, 14-limiting ring, 15-gear cylinder, 16-cleaning device, 1601-bevel gear rod, 1602-auger, 1603-delivery sleeve, 1604-insertion rod, 1605-accommodating cavity, 1606-telescopic tube, 1607-cleaning rod, 1608-cleaning hole, 1609-cleaning villi, 1610- Small motor, 1611-fixed cylinder, 17-servo motor, 18-annular limit groove, 19-lifting platform, 20-cylinder, 21-center shaft, 22-gear plate, 23-reagent cup, 24-cylinder, 25-piston, 26-drip head, 27-push-pull rod, 28-limiting strip, 29-U-shaped rod, 30-horizontal pull rod, 31-vertical square plate, 32-horizontal positioning plate, 33-engaging teeth, 34-limiting handle, 35-compression reset spring group, 36-top head, 37-press switch, 38-positioning slide, 39-tension reset spring group, 40-pressing plate.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be an electrical connection; it can be a hydraulic oil circuit connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Referring to FIGS. 1 to 10 , a gastric juice acidity detection device for a digestive system includes a negative pressure suction device and a detection device. The negative pressure suction device can extract the patient's gastric juice from the body into the detection device, and then drip the reagent into the gastric juice through the detection device. The negative pressure suction device includes a negative pressure suction machine 1, a gastric tube 2 and a negative pressure suction bottle 3. The negative pressure suction machine 1 is connected to the negative pressure suction bottle 3, and the negative pressure suction bottle 3 is connected to the gastric tube 2, wherein the cross-section of the negative pressure suction bottle 3 is circular, and the overall structure of the negative pressure suction bottle 3 is a funnel shape that gradually shrinks from top to bottom. It should be noted that the upper end of the negative pressure suction bottle 3 is a closed end, and the lower end of the negative pressure suction bottle has an opening. Preferably, a drainage channel 4 is provided at the lower end of the negative pressure suction bottle, and the drainage channel 4 is a cylindrical structure. The drainage channel 4 is connected to the internal space of the negative pressure suction bottle, and a guide port is provided at the lower end of the drainage channel;

When the diversion port is not blocked, the internal space of the negative pressure suction bottle 3 is connected with the external space through the drainage channel, and the external air can enter the negative pressure suction bottle 3 from the diversion port through the drainage channel 4, so that negative pressure cannot be generated in the negative pressure suction bottle 3, resulting in the stomach tube 2 connected to the negative pressure suction bottle 3 being unable to extract gastric juice from the patient's stomach. At this time, even if the negative pressure suction machine 1 is started and the air in the negative pressure suction bottle 3 begins to be extracted, the external air will also enter the negative pressure suction bottle 3 from the diversion port through the drainage channel 4, resulting in the stomach tube 2 being unable to extract gastric juice from the patient's stomach. Only after the diversion port is blocked, the negative pressure suction The inside of the drainage bottle 3 and the drainage channel 4 cannot be connected to the outside air, so that the negative pressure suction bottle 3 cannot obtain air from the channel other than the gastric tube 2. At this time, the negative pressure suction machine 1 is started to extract the air in the negative pressure suction bottle 3, and the gastric tube 2 will extract the gastric juice in the patient's body into the negative pressure suction bottle 3. After the gastric juice enters the negative pressure suction bottle 3, since the overall structure of the negative pressure suction bottle 3 is funnel-shaped, the gastric juice will flow downward along the side wall of the negative pressure suction bottle 3 into the drainage channel 4. When the diversion port is not blocked, the gastric juice will be discharged outward through the diversion port and fall into the detection device, and then the reagent will be dripped into the gastric juice through the gastric juice detection device.

Wherein, referring to FIGS. 1 to 7 , the gastric fluid detection device includes a dripping device and a base 5, a power assembly is arranged in the base 5, a storage space is arranged in the base 5, the power assembly is located in the storage space, a rotating table 6 is arranged on the base 5, the rotation of the rotating table 6 can be controlled by the power assembly, the cross-section of the rotating table 6 is circular, and an inclined rod 7 is arranged on the rotating table 6, the number of the inclined rods 7 is four, and the inclined rods 7 are arranged in a circular array around the rotating table as the center, one end of the inclined rod 7 is fixedly connected to the rotating table 6, and the other end of the inclined rod 7 is provided with a placement ring 8, and the placement ring 8 is provided on Two limiting openings 9 are symmetrically arranged, and the limiting opening 9 extends from the inner circumference of the placement ring 8 to the outer circumference of the placement ring. The limiting opening 9 is a through opening, and the connecting line of the two limiting openings 9 forms a cross with the central axis of the placement ring 8, and the intersection is the center of the placement ring 8. The limiting opening 9 includes a vertical limiting opening and a horizontal limiting opening. The vertical limiting opening extends along the upper surface of the placement ring to the lower surface of the placement ring, and the horizontal limiting opening extends along the circumferential direction of the placement ring. The vertical limiting opening and the horizontal limiting opening are connected, so that the cross section of the limiting opening 9 is "L"-shaped, and a sampling box 10 is arranged in the placement ring 8;

The bottom surface of the sampling box 10 can be used to block the diversion port. In order to improve the blocking effect, a silicone pad 11 made of medical silicone can be fixedly arranged on the bottom of the sampling box. The silicone pad 11 can be used to block the diversion port to improve the blocking effect. Two raised protruding columns 12 are arranged on the outer side wall of the sampling box 10. When the sampling box 10 is placed in the placement ring 8, the protruding column 12 enters the vertical limiting port from the upper end of the limiting port 9. When the protruding column 12 contacts the horizontal limiting port, the sampling box 10 is rotated to make the protruding column 12 enter the horizontal limiting port. At this time, the placement ring 8 limits the sampling box 10 through the limiting port 9, so that the sampling box 10 cannot move up and down from the placement ring 8, thereby achieving the effect of making the sampling box 10 move with the placement ring 8. When the placement ring 8 moves up and down with the rotating table 6, the sampling box 10 will also move up and down accordingly. Other technical solutions can also be used to achieve the limitation of the sampling box 10, such as a threaded connection or a clamping structure.

The base 5 is also provided with a support frame 13, and a limiting ring 14 is provided on the support frame 13. The negative pressure suction bottle 3 is placed in the limiting ring 14. The limiting ring 14 is also provided with a limiting structure, which can limit the negative pressure suction bottle 3. The limiting structure is provided with an internal thread on the inner wall of the limiting ring 14, and an external thread matching the internal thread is also provided on the outer wall of the negative pressure suction bottle 3. The negative pressure suction bottle 3 is placed in the limiting ring 14, and then the negative pressure suction bottle 3 is rotated. The external thread on the outer wall of the negative pressure suction bottle 3 and the internal thread on the limiting ring cooperate with each other, so that the negative pressure suction bottle 3 is fixed on the limiting ring and controlled to be unable to move up and down. When the inner liner in the negative pressure suction bottle 3 needs to be replaced, or the negative pressure suction bottle 3 needs to be cleaned, the negative pressure suction bottle 3 is reversely rotated to take it out of the limiting ring 14;

Under normal conditions, after placing the negative pressure suction bottle 3 into the limiting ring 14, the four sampling boxes 10 are respectively placed in the four placement rings 8. For ease of understanding, the four sampling boxes 10 are arranged counterclockwise and marked as box No. 1, box No. 2, box No. 3 and box No. 4. At this time, the central axis of the diversion port at the lower end of the negative pressure suction bottle 3 is on the same straight line as a central axis of box No. 1. When the diversion port discharges gastric juice outward, the gastric juice will fall directly into box No. 1. When the rotating table 6 drives the sampling box 10 to rotate, the gastric juice in the negative pressure suction bottle 3 has been discharged and will not drip downward. When the rotating table 6 stops rotating, box No. 2 is located below the diversion port.

Referring to FIGS. 1 to 10 , the power assembly includes a gear cylinder 15 disposed below the rotating table 6. The upper end of the gear cylinder 15 is fixedly connected to the rotating table 6. The extension line of the central axis of the gear cylinder 15 coincides with the central axis of the rotating table 6. The gear cylinder 15 is a circular cylindrical structure with a hollow interior. The outer wall of the gear cylinder 15 is provided with bar teeth. A servo motor 17 is engaged with the bar teeth. The servo motor 17 is operated to control the gear cylinder 15 to drive the rotating table 6 to rotate, thereby causing the inclined tie rod 7 to control the placement ring 8 to rotate.

An annular limiting groove 18 is provided on the inner wall of the gear cylinder 15, and a lifting platform 19 is provided in the annular limiting groove 18. The lifting platform 19 is cylindrical, and the lifting platform 19 is located in the annular limiting groove 18, and the lifting platform 19 can rotate freely in the annular limiting groove 18. Therefore, when the gear cylinder 15 drives the rotating table 6 to rotate, the lifting platform 19 will not rotate in the annular limiting groove 18. A cylinder 20 is provided below the lifting platform 19, and the lifting and lowering of the lifting platform 19 can be controlled by the cylinder 20. In order to improve the stability of the lifting platform 19 and the rotating table 6, a central shaft 21 is provided at the center of the lifting platform 19. The central shaft 21 is vertical to the lifting platform 19. The central shaft 21 passes through the center of the rotating table 6 and then extends upward to be connected to the dripping device. The central shaft 21 is fixedly connected to the lifting platform 19;

Therefore, the central shaft 21 will rise or fall together with the lifting platform 19. When the cylinder 20 controls the lifting platform to rise, the rotating table 6 will rise accordingly, and the inclined rod 7 will drive the placement ring 8 to rise, so that the sampling box 10 in the placement ring 8 will also move upward. Since the No. 1 box was originally located below the guide port, the No. 1 box moves upward at this time, which will make the guide port located in the No. 1 box. When the lifting platform 19 stops rising, the silicone pad 11 in the No. 1 box just fits with the guide port. When the negative pressure suction machine 1 is running, the air in the negative pressure suction bottle 3 is extracted, and the silicone pad 11 will fit more closely with the guide port, thereby forming a blockage for the guide port, so that the negative pressure Negative pressure is formed in the suction bottle 3, which prompts the gastric tube 2 to extract gastric juice from the patient's body. When the negative pressure suction machine 1 stops working, the cylinder 20 controls the lifting platform 19 to descend, so that the rotating table 6 drives the inclined rod 7 to descend, and the sampling box 10 is controlled to descend by the placement ring 8 so that the No. 1 box moves downward accordingly, so that the silicone pad 11 in the No. 1 box is separated from the diversion port. At this time, the gastric juice in the negative pressure suction bottle will flow out of the diversion port through the drainage channel and drip into the No. 1 box. After the gastric juice is collected, the rotating table rotates so that the No. 2 box is located below the diversion port. Repeating the above operation can fill the No. 2 box with gastric juice, and then the rotating table 6 is rotated so that the No. 3 box is located below the diversion port.

Referring to FIGS. 1 to 10 , the upper end of the central shaft 21 is further provided with a serrated portion, a gear plate 22 is meshed on the serrated portion, and a dripping device is connected through the gear plate 22. The dripping device includes a reagent cup 23, a cylinder 24 and a piston 25. The reagent cup 23 is connected to the support frame 13. An infusion tube is connected to the reagent cup 23. The other end of the infusion tube is connected to the cylinder 24. A first one-way valve is provided at the connection between the infusion tube and the cylinder 24 to avoid backflow. A dripping head 26 is provided at the lower end of the cylinder 24. A valve is provided between the cylinder 24 and the dripping head 26. The second one-way valve, the reagent in the reagent cup 23 can be transported to the cylinder 24 through the infusion tube and then discharged through the drip head 26. The piston 25 is located in the cylinder 24. A closed accommodating chamber is formed between the piston 25 and the second one-way valve and the first one-way valve. The reagent or air can be stored in the accommodating chamber. The piston 25 is provided with a push-pull rod 27, which can drive the piston 25 to move up and down in the cylinder 24, so as to control the discharge of the air or reagent in the accommodating chamber. The push-pull rod 27 is provided with a gear bar, which meshes with the gear plate 22;

When the rotating platform 6 drives the central shaft 21 to rise, it drives the gear plate 22 to rotate, so that the gear plate 22 controls the push-pull rod 27 to drive the piston 25 to move downward. When the piston 25 moves downward, the air or liquid in the chamber of the cylinder 24 is discharged from the drip head 26. Among them, the annular limit groove 18, the lifting platform 19, the central shaft 21, the gear plate 22 and the gear bar constitute a lifting power assembly. The lifting power assembly can control the dripping device to drip into the sampling box 10 and can also control the sampling box 10 and the guide The fitting and separation of the flow outlet, when the rotating table 6 drives the central axis 21 to descend, the push-pull rod 27 is driven by the gear plate 22 to move the piston 25 upward, and when the piston 25 moves upward, the reagent in the reagent cup 23 is drawn into the accommodating chamber of the cylinder 24 through the infusion tube through the negative pressure. When the rotating table 6 is in a stationary state, if box No. 1 is located below the guide port, box No. 4 is located below the drip head 26, and when box No. 2 is located below the guide port, box No. 1 is located below the drip head 26, and so on.

Referring to FIGS. 1 to 10 , the negative pressure suction device and the detection device are also connected to a system component, which is connected to the negative pressure suction machine 1, the cylinder 20 and the servo motor 17 through a wire, and because the system component has a timing function, the system component can control the start and stop of the negative pressure suction machine 1, the cylinder 20 and the servo motor 17 according to a specified time;

After the power is connected, the negative pressure suction machine 1 is started, and the system components send out instructions to control the cylinder 20 to rise and the system components start the first round of timing. When the cylinder 20 rises for one minute, the system components control the negative pressure suction machine 1 to stop working while controlling the cylinder 20 to descend. After the cylinder 20 has descended for fifteen minutes, the system components control the servo motor 17 to operate according to the set parameters, so that the turntable 6 rotates ninety degrees clockwise. After the servo motor 17 stops running, the system components continue to issue instructions to control the cylinder 20 to rise while also controlling the negative pressure suction machine 1 to operate, and the system components start the second round of timing, repeating the instructions in the first round until the control servo motor 17 stops running in the fourth round. When the fourth round of servo motor 17 stops running and drives the turntable to rotate, the entire system components stop working, and manual control of the start of the negative pressure suction machine is required to start a new four-round timing and issue instructions.

Referring to FIGS. 1-10 , due to the special shape of the negative pressure suction bottle 3 in the present invention, there are certain inconveniences in cleaning. In order to avoid the trouble of inconvenience in cleaning, a cleaning device 16 is also connected to the base 5. The cleaning device 16 includes a bevel gear rod 1601 meshed with the gear cylinder 15. The other end of the bevel gear rod 1601 is meshed with an auger 1602. The auger 1602 can be driven to rotate by the bevel gear rod 1601. The central axis of the auger 1602 is perpendicular to the base. The top shaft of the auger 1602 is connected to The conveying sleeve 1603 is a barrel-shaped structure, the upper end of the conveying sleeve 1603 is a closed end, and the lower end of the conveying sleeve 1603 is an open end. A containing groove is provided at the lower end of the auger 1602, and a medical cleaning agent is contained in the containing groove. A cylindrical through hole connected to the containing groove is also provided on the base 5. The conveying sleeve 1603 is located in the cylindrical through hole and can rotate. The medical cleaning agent in the containing groove can be transported to the upper end of the conveying sleeve 1603 through the cooperation of the auger 1602 and the conveying sleeve 1603.

The top wall of the delivery sleeve 1603 is hemispherical, and two rectangular openings are symmetrically arranged on the top wall of the delivery sleeve 1603. Socket slideways are arranged on both sides of the rectangular openings, and a plug rod 1604 is arranged in the rectangular opening. The lower end of the plug rod 1604 is connected to the socket slideway by a telescopic tube 1606. The socket slideway is also connected to a receiving cavity 1605 located in the top wall. The receiving cavity 1605 accommodates the excess part of the telescopic tube 1606. The plug rod 1604 is cylindrical. A conveying channel is provided in 1604, the lower end of the conveying channel is located in the conveying sleeve 1603, the upper end of the conveying channel is axially connected with a cleaning rod 1607, the axial connection is located at the upper part of the cleaning rod 1607, and is located at one-third of the entire cleaning rod 1607. A cleaning channel is provided in the cleaning rod 1607, and the cleaning channel and the conveying channel are also connected by a telescopic tube 1606. A cleaning hole 1608 is provided on the cleaning rod 1607, and the cleaning hole 1608 is communicated with the cleaning channel;

When the gear cylinder rotates, it drives the bevel gear rod 1601 to rotate so that it controls the auger 1602 to rotate, thereby delivering the medical cleaning agent in the containing groove to the upper end of the delivery sleeve 1603. Due to the setting of the telescopic tube 1606, no matter how the insertion rod 1604 rotates, the telescopic tube 1606 can block the position outside the rectangular opening to prevent the medical cleaning agent from flowing out from other positions of the rectangular opening, so that the medical cleaning agent can only enter the delivery channel in the insertion rod 1604 from the rectangular opening, and then enter the cleaning channel in the cleaning rod 1607, and finally flow out from the cleaning hole 1608.

Due to the axial connection between the insertion rod 1604 and the conveying sleeve 1603, the insertion rod 1604 can be flipped to be perpendicular to the conveying sleeve 1603. When the insertion rod 1604 is perpendicular to the conveying sleeve 1603, since the axial connection position between the cleaning rod 1607 and the insertion rod 1604 is located at the upper end of the cleaning rod 1607, the cleaning rod 1607 will be in a freely hanging state under the influence of gravity. If the cleaning rod 1607 is located inside the negative pressure suction bottle 3 at this time, it will be restricted by the shape of the inner wall of the negative pressure suction bottle 3, thereby fitting with the inner wall of the negative pressure suction bottle 3. In order to better clean the inner wall of the negative pressure suction bottle 3, detachable cleaning fluff 1609 is provided on the outer circumferential surface of the cleaning rod 1607 and the conveying sleeve 1603. When the conveying sleeve 1603 is inserted into the negative pressure suction bottle 3, the cleaning fluff 1609 is squeezed, so that the conveying sleeve 1603 can smoothly enter the negative pressure suction bottle 3.

A motor slot is provided inside the base 5, which is connected to the cylindrical through hole. A small motor 1610 is provided in the motor slot, and bar teeth are provided on the conveying sleeve 1603. The small motor 1610 is meshed with the bar teeth. When the small motor 1610 rotates, it will drive the conveying sleeve 1603 to rotate. Since the auger 1602 is axially connected to the top wall of the conveying sleeve 1603, the auger 1602 will not rotate with the conveying sleeve 1603, and the small motor 1610 is connected to the system components, so that the system components can control the start and stop of the small motor 1610, and a fixing cylinder 1611 is also provided on the base 5, and the fixing cylinder 1611 is provided with an internal thread for fixing the negative pressure suction bottle 3.

When in use, firstly, four empty sampling boxes 10 are placed in the placement ring 8, so that the protruding column 12 enters the limiting opening 9. When the protruding column 12 contacts the lateral limiting opening, the sampling box 10 is rotated to make the protruding column 12 enter the lateral limiting opening, so that the placement ring 8 limits the up and down movement of the sampling box 10. At the same time, the reagent cup 23 is filled with reagent, that is, phenol red indicator. Then, the medical staff inserts the gastric tube 2 into the patient who has been injected with pentagastrin. After the gastric tube 2 enters the patient's stomach, the patient's gastric fluid is sampled four times, and each sampling interval is 15 minutes. The power is turned on and the negative pressure suction machine 1 is controlled to start. At the same time, the system components start to operate and start the first round of gastric fluid sampling.

The system components first control the rise of the cylinder 20, thereby controlling the lifting platform 19 to drive the rotating platform 6 to rise. The rise of the rotating platform 6 can drive the inclined rod 7 to control the placement ring 8 to move upward, thereby moving the sampling box 10 upward. Since the diversion port is located above the No. 1 box, through the upward movement of the No. 1 box, the diversion port will enter the No. 1 box and gradually approach the silicone pad 11 in the No. 1 box until the diversion port fits with the silicone pad 11 in the No. 1 box. When the silicone pad 11 fits with the diversion port, since the negative pressure suction bottle 3 cannot obtain air from other channels except the gastric tube 2, the gastric tube 2 will be taken from the patient's body. Gastric juice is extracted into the negative pressure suction bottle 3, and due to the rise of the lifting platform 19 and the rotating platform 6, the central shaft 21 also moves upward, so that the serrated portion drives the gear plate 22 to rotate, and then controls the push-pull rod 27 to drive the piston 25 to move downward, so that the air in the cylinder 24 and the drip head 26 is squeezed and discharged from the drip head 26. At this time, the No. 4 box is located below the drip head 26. Then, after the cylinder 20 rises for one minute, the system components control the negative pressure suction machine 1 to stop running, and the cylinder 20 descends at the same time. At this time, the gastric juice extracted from the negative pressure suction bottle 3 is about 15-20 ml;

At this time, the cylinder 20 controls the lifting platform 19 to drive the rotating platform 6 and the central shaft 21 to descend, and then the inclined rod 7 controls the placement ring 8 to drive the sampling box 10 to move downward, so that the silicone pad 11 in the No. 1 box is separated from the diversion port, and then the gastric juice in the negative pressure suction bottle 3 will flow out from the diversion port after passing through the drainage channel 4 and drip into the No. 1 box, and the gastric juice begins to secrete gastric acid in the No. 1 box, and the central shaft 21 descends to control the gear plate 22 to drive the push-pull rod 27 to move the piston 25 upward in the cylinder 24, and at this time the cylinder 24 extracts the reagent in the reagent cup 23 into the accommodating space of the cylinder 24 through the infusion tube;

When the gastric juice in the negative pressure suction bottle 3 has all fallen into the No. 1 box, you can choose to replace the negative pressure suction bottle 3. Take out the used negative pressure suction bottle 3, insert the insertion rod 1604 and the cleaning rod 1607 into the interior of the negative pressure suction bottle 3 through the opening at the lower end of the negative pressure suction bottle 3, and then fix it through the fixing tube 1611 so that the negative pressure suction bottle 3 cannot rotate. At the same time, install the new negative pressure suction bottle 3 on the limit ring 14. Then, after the cylinder descends for fifteen minutes, the system components will control the servo motor to rotate according to the specified parameters, so that the rotating table 6 rotates ninety degrees. At this time, the No. 1 box is located below the drip head 26, and the No. 2 box is located above the diversion port.

When the rotating table rotates, since the bevel gear rod 1601 in the cleaning device is meshed with the gear cylinder, the bevel gear rod 1601 drives the auger 1602 to rotate, so that the medical cleaning agent in the containing tank is transported upward in the conveying sleeve 1603, and the medical cleaning agent enters the conveying channel in the insertion rod 1604 through the rectangular opening, and then enters the cleaning channel through the conveying channel, and finally flows out from the cleaning hole 1608 to penetrate the cleaning fluff 1609 on the cleaning rod 1607;

At this time, the system component controls the cylinder 20 to rise, so that the silicone pad 11 in the second box fits with the guide port, and controls the operation of the negative pressure suction machine 1 to perform a second gastric fluid sampling for the patient. At the same time, the system component controls the small motor 1610 to rotate, so that the conveying sleeve 1603 rotates accordingly, and then controls the insertion rod 1604 and the cleaning rod 1607 to rotate in the negative pressure suction bottle 3, so that the cleaning hairs 1609 clean the inner wall of the negative pressure suction bottle 3. When the gastric fluid extraction stops, the system component controls the small motor 1610 to stop, and the negative pressure suction bottle 3 is removed from the cleaning device and rinsed with clean water to dry.

Through the timing and control of the system components, it is possible to effectively avoid the situation where the patient cannot be sampled on time due to forgetfulness or emergency situations caused by human factors, and the patient's gastric juice can be sampled better at the prescribed intervals. In addition, the rise of the central shaft 21 drives the gear plate 22 to rotate, and the gear plate is engaged with the push-pull rod, so that the gear plate controls the push-pull rod 27 to drive the piston 25 to move downward in the cylinder 24, and the reagent extracted from the reagent cup 23 in the cylinder 24 is discharged from the drip head 26, so that it drips into the gastric juice in the No. 1 box. At this time, the gastric juice in the No. 1 box has been stable for fifteen minutes, and the gastric acid in the gastric juice has been fully secreted. Combined with the dripped reagent, it only needs to wait for the gastric juice and the reagent to fully react.

No medical staff is required to operate the whole process. The patient only needs to cooperate according to the regulations to realize automatic gastric juice extraction and sampling, and the reagent will be automatically dripped after sufficient gastric acid secretion. The medical staff only needs to take out the gastric tube 2 from the patient's body and take out the sampling box 10 from the placement ring 8 after the fourth round. It should be noted that at this time, box No. 4 located under the drip head 26 is temporarily not fully secreting gastric juice, and no reagent is dripped in, and there may also be insufficient amount of reagent dripped into boxes No. 1, No. 2, and No. 3. Therefore, medical staff are required to drip the reagent by themselves and observe and calculate the results.

The second embodiment of the present invention, as shown in Figures 1 to 11, is a modification and replacement of the lifting power assembly recorded in the above embodiment. The lifting power assembly includes two limit strips 28 arranged on the support frame 13, and a vertical slideway is arranged on the limit strips 28. Two sliders are arranged on the limit ring 14. The two sliders are respectively located in the two vertical slideways and can move up and down in the vertical slideways, so that the limit ring 14 moves up and down accordingly. A U-shaped rod 29 is arranged on the upper surface of the limit ring 14, and a horizontal tie rod 30 is also arranged on the U-shaped rod 29. The horizontal tie rod 30 is fixedly connected to the upper end of the push-pull rod 27. The rise and fall of the push-pull rod 27 and the limit ring 14 can be controlled simultaneously by the horizontal tie rod 30. A vertical square plate 31 is arranged on the support frame 13, and a horizontal positioning plate 32 is fixedly connected to the upper end of the vertical square plate 31. The lower end surface of the horizontal positioning plate 32 is connected to the cylinder 20, and the other end of the cylinder 20 is connected to the middle end of the horizontal tie rod 30.

The cylinder 20 can control the horizontal tie rod 30 to drive the limit ring 14 and the push-pull rod 27 to move up and down, and a rotating seat is fixedly connected below the rotating table 6. The rotating seat is located in the storage space of the base 5 and is fixed to the base 5. A rotating rod is connected to the rotating seat. The upper end of the rotating rod is fixedly connected to the rotating table 6, so that the rotating table 6 can rotate with the rotating rod as the central axis. Since the rotating seat is fixed to the base 5, the rotating table cannot move up and down.

When in use, the system component controls the cylinder 20 to drive the horizontal tie rod 30 to move downward, so that the limit ring 14 moves downward in the vertical slide, and at the same time, the limit ring 14 drives the negative pressure suction bottle 3 to move downward, so that the guide port fits with the silicone pad 11 in the sampling box 10, so that the gastric tube 2 can extract gastric fluid from the patient's body into the negative pressure suction bottle 3, and at the same time, the push-pull rod 27 can be controlled to drive the piston 25 to move downward in the cylinder 24, so that the piston 25 can control the air or reagent in the cylinder 24 to be discharged from the cylinder 24 through the drip head 26. When the system component controls the cylinder 20 to drive the horizontal tie rod 30 to move upward, the guide port is separated from the silicone pad 11 in the sampling box 10, so that the gastric fluid in the negative pressure suction bottle 3 flows into the sampling box 10, and And because the limiting opening 9 set on the placement ring 8 and the protruding column 12 on the sampling box 10 cooperate, the sampling box 10 can be prevented from being pressed and offset or the silicone pad 11 can be prevented from being separated from the guide port, causing the sampling box 10 to move upward with the negative pressure suction bottle 3. When the horizontal pull rod 30 moves upward, it also controls the push-pull rod 27 to drive the piston 25 to move upward in the cylinder 24, and the reagent is extracted from the reagent cup 23 through the infusion tube into the cylinder 24. In this embodiment, many parts can be saved, making the structure simpler and saving production costs. However, it should be noted that during use, it is necessary to control the length of the gastric tube 2 to avoid the gastric tube 2 moving when the negative pressure suction bottle 3 moves up and down, thereby causing discomfort to the patient.

The third embodiment of the present invention, referring to Figures 1 to 13, is based on the second embodiment, the internal thread on the limit ring 14 and the thread on the negative pressure suction bottle are cancelled, and the limit structure is set to set a clamping piece slide on the U-shaped rod 29, and a limit clamping piece 41 is set in the clamping piece slide to limit the negative pressure suction bottle 3, specifically, a clamping tooth 33 is also set in the clamping piece slide, the upper end face of the clamping tooth 33 is an inclined surface, and the lower end face of the clamping tooth 33 is a plane, and the clamping teeth 33 are arranged at equal intervals along the length of the clamping piece slide, and the limit clamping piece 41 includes a limit handle 34, and the limit One end of the handle 34 is located in the engaging member slideway and can move up and down in the engaging member slideway. A spring groove is provided in the limit handle 34, and a compression reset spring group 35 is provided in the spring groove. The limit handle 34 is also provided with a through hole connected to the spring groove, and a top engaging head 36 is provided in the through hole. The compression reset spring group 35 is connected to the top engaging head 36. The lower surface of the top engaging head 36 is an inclined surface, and the upper surface of the top engaging head 36 is a plane. A pressing switch 37 is vertically connected to the top engaging head 36. The pressing switch 37 is located in the groove. The top engaging head 36 extends from the through hole to the engaging member slideway and is top-engaged with the engaging teeth 33.

By pulling the push switch 37, the top engaging head 36 can be controlled to move away from the engaging teeth 33, and the limit handle 34 can move upward at this time. When the push switch 37 is released, the top engaging head 36 is pushed to a state of being engaged with the engaging teeth 33 by compressing the return spring group 35. At this time, the limit handle 34 cannot move upward. When the limit handle 34 is pressed downward, the inclined surface of the compression return spring group 35 and the top engaging head 36 cooperate with the engaging teeth 33, which will make the limit handle 34 move downward without being restricted. When in use, first move the limit engaging member 41 upward, then put the negative pressure suction bottle 3 into the limit ring 14, and press the limit handle 34 downward to make the limit handle 34 The lower end is in contact with the top wall of the negative pressure suction bottle 3. At this time, the locking tooth 33 is engaged with the top engaging head 36, so that the limit handle 34 cannot move upward, thereby limiting the negative pressure suction bottle 3 from moving upward. The limiting method adopted in this embodiment can adapt to negative pressure suction bottles 3 of different heights, and there is no need to set external threads on the negative pressure suction bottle 3, which is simpler and more convenient. However, since the external threads in the negative pressure suction bottle 3 are cancelled in this embodiment, the fixed cylinder 1611 in the cleaning device cannot limit the negative pressure suction bottle 3. Therefore, the setting of the fixed cylinder 1611 is also cancelled. When in use, the negative pressure suction bottle 3 needs to be manually held to limit it.

In the fourth embodiment of the present invention, referring to FIGS. 1 to 15 , the cylinder 20 in the second embodiment is replaced by a manual pressure assembly, and the lifting and lowering of the negative pressure suction bottle 3 and the push-pull rod 27 are controlled by the manual pressure assembly. The manual pressure assembly includes a positioning slide 38 arranged on the vertical square plate 31, and the cross section of the positioning slide 38 is a "concave" type. The upper and lower ends of the positioning slide 38 are both closed ends. A positioning slider is arranged on the side of the horizontal tie rod 30, and the positioning slider is a "T" type. The positioning slider is located in the positioning slide 38, and the positioning slider can move up and down in the positioning slide 38. The horizontal tie rod 30 is pushed downward by the positioning slide 38 and the positioning slider. The moving distance is limited to avoid the situation where the equipment is damaged by excessive force. A tension reset spring group 39 is fixedly connected to the upper surface of the cross tie rod 30. The tension reset spring group 39 is located at the middle end of the cross tie rod 30. The cross tie rod 30 can be pulled and reset by the tension reset spring group 39. When the cross tie rod 30 is under pressure, it will move downward. When the cross tie rod 30 loses pressure, it will move upward and reset by the tension reset spring group 39. For the convenience of use, a pressing plate 40 can also be provided on the cross tie rod 30. By pressing the pressing plate 40 downward, the cross tie rod 30 is controlled to move downward, driving the negative pressure suction bottle 3 and the push-pull rod 27 to move downward.

When in use, the pressing plate 40 is manually pressed downward, so that the horizontal pull rod 30 drives the negative pressure suction bottle 3 and the push-pull rod 27 to move downward. When the guide port on the negative pressure suction bottle 3 fits onto the silicone pad 11 in the sampling box 10, the silicone pad 11 blocks the guide port, so that the gastric tube 2 can extract gastric fluid from the patient's body into the negative pressure suction bottle 3, and the push-pull rod 27 also drives the piston 25 to move downward to the lower end of the cylinder 24, so that the piston 25 can push the air or reagent in the cylinder 24 into the cylinder 24 through the drip head 26. At this time, the positioning slider moves to the closed end below the positioning slide 38, and the positioning slider can no longer move downward. When the gastric fluid extraction is completed, the pressing plate 40 is released, and the horizontal pull rod 30 is moved upward by stretching the reset spring group 39. The push-pull rod 27 moves upward, thereby driving the negative pressure suction bottle 3 and the push-pull rod 27 to move upward, separating the diversion port from the silicone pad 11, so that the gastric juice in the negative pressure suction bottle 3 drips downward into the sampling box 10, and at the same time, the push-pull rod 27 moves upward, driving the piston 25 to move upward in the cylinder 24, so that the reagent in the reagent cup 23 enters the cylinder 24 through the infusion tube, and the setting of the system components can also be cancelled. The switch of the negative pressure suction machine 1 and the small motor 1610 is manually controlled, the servo motor 17 is cancelled, and the rotation of the rotating table 6 is directly controlled by manually turning the inclined rod 7. This embodiment can avoid damage to the electric device, or in special circumstances where it is inconvenient to use the electric device, and the entire gastric juice acidity detection device for the digestive system can be controlled in a fully manual manner.

In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims (8)

1. A gastric juice acidity detection device for a digestive system, comprising a negative pressure suction device and a detection device, wherein the negative pressure suction device extracts gastric juice onto the detection device, and is characterized in that: the detection device comprises a dripping device and a base, wherein a rotatable rotating table is arranged on the base, wherein the rotating table is connected to a sampling box, and when the rotating table rotates, the sampling box is driven to move in a circular arc track, and a power assembly is also arranged on the base, wherein the power assembly comprises a servo motor and a gear cylinder, wherein a bar-shaped tooth is arranged on the outer wall of the gear cylinder, and the bar-shaped tooth is meshed with the servo motor, and the gear cylinder is fixedly connected to the rotating table; The base is also connected to a cleaning device, which includes a bevel gear rod meshed with the gear cylinder, the other end of the bevel gear rod is meshed with an auger, the auger is driven to rotate by the bevel gear rod, the central axis of the auger is perpendicular to the base, the top axis of the auger is connected to a conveying sleeve, the conveying sleeve is a barrel-shaped structure, the upper end of the conveying sleeve is a closed end, and the lower end of the conveying sleeve is an open end. A holding groove is provided at the lower end of the auger, and medical cleaning agent is filled in the holding groove. A bottom cover is also provided below the placement groove, and the bottom cover is located on the bottom surface of the base. A cylindrical through hole connected to the holding groove is also provided on the base, and the conveying sleeve is located in the cylindrical through hole. When the conveying sleeve rotates, the medical cleaning agent in the holding groove is transported to the upper end of the conveying sleeve through the cooperation of the auger and the conveying sleeve, and the conveying The top wall of the sleeve is hemispherical, and two rectangular openings are symmetrically arranged on the top wall of the conveying sleeve. Socket slideways are arranged on both sides of the rectangular openings, and an insertion rod is arranged in the rectangular opening. The lower end of the insertion rod is connected to the socket slideway by a telescopic tube. The socket slideway is also connected to a receiving cavity located in the top wall, and the receiving cavity accommodates the excess part of the telescopic tube therein. The insertion rod is cylindrical, and a conveying channel is arranged in the insertion rod. The lower end of the conveying channel is located in the conveying sleeve, and the upper end of the conveying channel is axially connected to a cleaning rod. The axial connection is located at the upper part of the cleaning rod, and is located at one-third of the entire cleaning rod. A cleaning channel is arranged in the cleaning rod, and the cleaning channel and the conveying channel are also connected by a telescopic tube. A cleaning hole is arranged on the cleaning rod, and the cleaning hole is connected to the cleaning channel; A motor slot is provided inside the base, the motor slot is connected to the cylindrical through hole, a small motor is provided in the motor slot, the small motor is engaged with the conveying sleeve, and a fixing cylinder is also provided on the base, and an internal thread is provided on the fixing cylinder; The negative pressure suction device comprises a negative pressure suction bottle located above the sampling box, the negative pressure suction bottle is connected to a gastric tube and a negative pressure suction machine, the negative pressure suction bottle is funnel-shaped, the upper end of the negative pressure suction bottle is a closed end, and the lower end has an opening, when the sampling box contacts the opening at the lower end of the negative pressure suction bottle, a closed space is formed inside the negative pressure suction bottle, the negative pressure suction machine extracts gastric juice into the suction bottle, when the opening at the lower end of the negative pressure suction bottle is separated from the sampling box, the gastric juice in the negative pressure suction bottle drips into the sampling box, and the sampling box moves to the bottom of the dripping device as the rotating table rotates; The detection device also includes a lifting power assembly, which is connected to the dripping device, and the lifting power assembly can control the contact and separation of the sampling box and the opening at the lower end of the negative pressure suction bottle; The negative pressure suction device and the detection device are also connected with system components. 2. A gastric juice acidity detection device for the digestive system according to claim 1, characterized in that: four inclined rods are arranged on the rotating table, and the four inclined rods are arranged in a circular array with the rotating table as the center, and a placement ring is arranged at the end of the inclined rod, and a limit opening is provided on the placement ring. 3. A gastric juice acidity detection device for the digestive system according to claim 2, characterized in that: a sampling box is arranged in the placement ring, and a protruding column is arranged on the outer wall of the sampling box, and the protruding column is engaged in the limit opening. 4. A gastric juice acidity detection device for the digestive system according to claim 1, characterized in that: the lifting power assembly includes a cylinder and a lifting platform, the lifting platform is connected to the bottom of the rotating table, and a central shaft is arranged on the lifting platform, the central shaft is connected to the dripping device, and the central shaft can control the dripping device to drip reagent outward. 5. A gastric juice acidity detection device for the digestive system according to claim 1, characterized in that: a support frame is provided on the base, a limiting ring is provided on the support frame, a limiting structure is provided on the limiting ring, and the limiting structure can limit the negative pressure suction bottle. 6. A gastric juice acidity detection device for the digestive system according to claim 5, characterized in that: the limiting structure is an internal thread set on the inner wall of the limiting ring and an external thread set on the outer wall of the negative pressure suction bottle. 7. A gastric juice acidity detection device for the digestive system according to claim 5, characterized in that: the limiting structure includes a U-shaped rod arranged on the limiting ring, a clamping piece slide is arranged on the connecting rod, a clamping piece slide is arranged in the clamping piece slide, and a clamping piece is connected in the clamping piece slide. 8. A gastric juice acidity detection device for the digestive system according to claim 7, characterized in that: the limit engaging member includes a limit handle and a top engaging head, the top engaging head is provided with a press switch, the limit handle is provided with a groove and a through hole, the top engaging head is connected in the groove through a compression reset spring group and extends outward from the through hole.