Integrated device for intragastric decompression and nutrition supply in emergency treatment

Abstract

The invention discloses an in-stomach pressure reduction and nutrition supply integrated device for emergency treatment, and relates to the technical field of medical instruments and equipment.The device comprises a protective shell, a set of supporting legs are installed on the bottom face of the protective shell, an opening and closing door is installed on the front face of the protective shell, and a bearing plate is installed on the inner wall of the protective shell; the stomach pressure of a patient is monitored through the stomach pressure sensor, the pressure of gastric juice is transmitted to the intelligent controller, the intelligent controller can control the negative pressure suction pump and the first electromagnetic valve to be opened, the negative pressure suction pump pumps the gastric juice into the gastric juice storage cylinder to be stored, and the intelligent controller controls the micro centrifugal pump and the second electromagnetic valve to be opened; a nutrient solution is injected into the stomach of a patient, the stomach pressure sensor continuously monitors and is linked with the controller to realize automatic switching between a pressure reduction mode and a nutrient supply mode, the risk of excessive stomach dilatation and nutrient solution reflux is remarkably reduced, the collaborative design of the double pumps supports data interaction, the working mode can be dynamically adjusted according to the pressure in the stomach, and the burden of the stomach and the intestine is prevented from being aggravated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical instrument equipment, in particular to an emergency gastric decompression and nutrition supply integrated device. BACKGROUND

[0002] In clinical treatment, gastric decompression is a key means to relieve symptoms of various acute and severe diseases. For patients with acute gastric distension, pyloric obstruction, intestinal obstruction, etc., the gastrointestinal peristalsis function is weakened or blocked, resulting in accumulation of a large amount of gas, liquid and undigested food in the stomach, and further causing symptoms such as increased gastric wall tension, abdominal pain, vomiting, etc. In severe cases, it can even cause gastric perforation, electrolyte imbalance and other life-threatening complications. Through gastric decompression, the gastric contents are promptly removed by negative pressure suction, which can effectively reduce the intragastric pressure and alleviate the patient's pain, creating conditions for subsequent treatment.

[0003] At the same time, nutrition supply is also indispensable in the process of emergency treatment. Patients cannot eat normally due to illness, or the gastrointestinal function is disturbed, affecting nutrient absorption. If long-term lack of nutritional support, it will cause problems such as decreased body immunity, slow wound healing, organ failure, etc. Especially in the emergency scene, the patient's condition is critical, and timely and effective nutrition supply can maintain the body's metabolic balance, enhance resistance, and improve the success rate of treatment. Therefore, while performing gastric decompression, nutrition supply must be ensured simultaneously to achieve the coordinated treatment of "decompression" and "nutritional support".

[0004] However, the existing gastric decompression and nutrition supply equipment still has some defects in use. The existing gastric decompression and nutrition supply equipment is mostly independently operated or simply combined, lacks integrated design and intelligent linkage mechanism, and the traditional equipment uses mechanical structure to realize decompression and nutrition channel switching, relying on passive response of physical pressure difference. Not only is the pressure monitoring accuracy low, but also the response speed is slow, which cannot timely respond to the gastric pressure mutation, and is easy to cause gastric overdistension or reflux of nutrient solution. The decompression pump and the nutrition pump of most devices are independent of each other, lack data interaction and collaborative control, and cannot dynamically adjust the working mode according to the intragastric pressure. For example, when the intragastric pressure is too high, the infusion of nutrient solution is still continued, increasing the gastrointestinal burden of the patient. Therefore, it is of great significance to develop an emergency gastric decompression and nutrition supply integrated device. SUMMARY

[0005] The purpose of the present application is to make up for the shortcomings of the prior art, and to provide an emergency gastric decompression and nutrition supply integrated device. It adopts integrated design and intelligent linkage mechanism, and realizes precise automatic switching of decompression and nutrition supply mode through linkage of sensors, electromagnetic valves and controllers, significantly reduces the risk of gastric overdistension and reflux of nutrient solution, and supports data interaction through collaborative design of double pumps, which can dynamically adjust the working mode according to the intragastric pressure to avoid increased gastrointestinal burden.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an integrated device for emergency gastric decompression and nutrition supply, which includes a protective shell, a group of supporting legs installed on the bottom surface of the protective shell, a switch door installed on the front surface of the protective shell, a carrying plate installed on the inner wall of the protective shell, two placement grooves are provided on the upper surface of the carrying plate, and two installation grooves are provided on the bottom surface of the carrying plate. A gastric juice storage cylinder and a nutrient solution storage cylinder are respectively placed in the two placement grooves, and the upper surfaces of the gastric juice storage cylinder and the nutrient solution storage cylinder are both installed with cylinder covers. A heating and stirring group is installed in the nutrient solution storage cylinder. The protective shell has a fixed component installed inside, the bottom surfaces of the gastric juice storage cylinder and the nutrient solution storage cylinder are respectively installed with a negative pressure suction pump and a micro centrifugal pump, the input end of the negative pressure suction pump is installed with a pressure reducing tube, the output end of the micro centrifugal pump is installed with a nutrient tube, the outer surfaces of the pressure reducing tube and the nutrient tube are respectively installed with a solenoid valve 1 and a solenoid valve 2, the outer surfaces of the pressure reducing tube and the nutrient tube are installed with an outer tube, a gastric pressure sensor is installed at one end of the outer tube away from the protective shell, the ends of the pressure reducing tube and the nutrient tube away from the protective shell are fixedly connected with a connecting tube, and an intelligent controller is installed on the front of the switch door.

[0007] Furthermore, heat dissipation grooves are provided on both the left and right sides of the protective shell, dustproof nets are installed on the inner walls of the two heat dissipation grooves, and transparent observation panels are fixedly embedded on both the left and right sides of the protective shell.

[0008] Furthermore, two suspension brackets are installed on the back of the protective shell, and a group of anti-slip strips are installed on the inner walls of the two suspension brackets.

[0009] Furthermore, the heating and stirring assembly includes a motor fixedly embedded in the upper surface of the nutrient solution storage cylinder, a rotating rod is installed at the output end of the motor, a heating rod is installed at the bottom end of the rotating rod, and two groups of stirring blades are installed on the outer surface of the rotating rod.

[0010] Furthermore, the fixing assembly includes a screw threadedly connected to the upper surface of the protective shell, a rotating block is installed at the top of the screw, the bottom end of the rotating block is rotatably connected to a fixed plate, and the fixed plate is adapted to the gastric juice storage cylinder and the nutrient solution storage cylinder, and a group of rubber strips are installed on the bottom surface of the fixed plate.

[0011] Furthermore, the fixing assembly also includes two sliding rods slidably connected to the upper surface of the protective shell, the bottom ends of the two sliding rods are connected to the upper surface of the fixing plate, and the top ends of the two sliding rods are installed with limiting plates.

[0012] Further, the intelligent controller is electrically connected with the stomach pressure sensor, and stomach pressure signals are collected in real time. The intelligent controller is electrically connected with the negative pressure suction pump, the micro centrifugal pump, the electromagnetic valve one and the electromagnetic valve two respectively. The intelligent controller controls the opening and closing of the negative pressure suction pump and the electromagnetic valve one based on a pressure gradient early warning model. The specific control logic is as follows:

[0013] The pressure gradient calculation formula is: Wherein, G p is a pressure gradient coefficient, representing the ratio of pressure change per unit time to sensitivity reference, P t is a current pressure value, P base is a basic pressure threshold, determined by the lower limit of human stomach physiological safety pressure, Δt is a sampling time interval, S p is a pressure sensitivity coefficient, an individualized parameter fitted from clinical data, with a value range of 0.8-1.2;

[0014] G p ≥G set and the duration exceeds T1, G set is a preset gradient threshold, T1 is a trigger delay threshold, the intelligent controller triggers the cascade control logic through a time sequence control algorithm, and the electromagnetic valve one is preferentially opened, and the negative pressure suction pump is started after a delay of ΔT to avoid instantaneous pressure impact, and ΔT is a mechanical response compensation time.

[0015] Further, the intelligent controller controls the working state of the micro centrifugal pump and the electromagnetic valve two based on a nutrition supply feasibility index model. The feasibility index calculation formula is: Wherein, F n is a nutrition supply feasibility index, a dimensionless parameter, with a value range of [0, 1], α is a pressure safety weight coefficient, β is a nutrition liquid remaining amount weight coefficient, γ is a pressure stability weight coefficient, P current is a current stomach pressure, P safe is a safety pressure upper limit, a stomach physiological tolerance threshold determined by clinical research, V nut is a remaining nutrition liquid volume, V store is a storage cylinder volume, R p is a pressure change rate, λ is a dynamic inhibition factor, used to adjust the influence degree of pressure fluctuation on feasibility, F n ≥F thresh , F thresh is a preset feasibility adjustment value, the intelligent controller starts the micro centrifugal pump first, and then starts the electromagnetic valve two after a delay, and simultaneously controls the heating and stirring assembly to heat the nutrition liquid to 37±0.5℃.

[0016] Further, the intelligent controller optimizes the decompression and nutrition supply switching logic through a bimodal collaborative control algorithm, wherein:

[0017] The mode switching criterion formula is: Wherein, D s is the mode switching decision value, P(t) is the pressure curve function at t, which is fitted by real-time data collected by the gastric pressure sensor, P target is the target pressure value, which is a set point dynamically adjusted according to the clinical state of the patient, t0 and t1 are the start and end times of the integral interval, respectively, K t is the time weight coefficient, which is dynamically adjusted according to the initial value of the treatment stage;

[0018] The bimodal collaborative efficiency formula is: Wherein, E coop is the collaborative efficiency index, a dimensionless parameter, representing the working efficiency under unit pressure, Q decomp is the decompression flow, τ decomp is the decompression time, Q nut is the nutrition flow, τ nut is the nutrition time, P avg is the average gastric pressure, t total is the total working time of the device;

[0019] D s ≥D thresh and E coop <E min , D thresh is the mode switching threshold, E min is the minimum efficiency threshold, and the intelligent controller optimizes the bimodal pump start-stop interval through a dynamic correction coefficient δ(t) to realize pressure fluctuation suppression, wherein δ(t) is determined by the following formula:

[0020] Compared with the prior art, the emergency gastric decompression and nutrition supply integrated device has the following beneficial effects:

[0021] One, the stomach liquid storage cylinder, nutrient liquid storage cylinder, negative pressure suction pump, micro centrifugal pump, decompression pipe, nutrient pipe, electromagnetic valve one, electromagnetic valve two, outer tube, stomach pressure sensor, communication pipe and intelligent controller, the device is used when medical staff inserts the outer tube from the patient's nasal cavity to the patient's stomach for use, the stomach pressure sensor can monitor the stomach pressure of the patient, the stomach pressure sensor can transmit the stomach pressure to the intelligent controller, when the stomach pressure of the patient exceeds the preset threshold, the intelligent controller can control the negative pressure suction pump and electromagnetic valve one to open, the negative pressure suction pump can suck the stomach liquid in the stomach of the patient to the inside of the stomach liquid storage cylinder for storage through the decompression pipe, the stomach pressure sensor continuously monitors the linkage mode of the controller to realize automatic switching, the intelligent controller can control the micro centrifugal pump and electromagnetic valve two to open, and the nutrient liquid stored in the nutrient liquid storage cylinder can be injected into the stomach of the patient through the nutrient pipe, so that the device can realize automatic switching of the decompression and nutrient supply mode, significantly reduce the risk of stomach overexpansion and nutrient liquid reflux, and the double-pump collaborative design supports data interaction, can dynamically adjust the working mode according to the intragastric pressure, and avoid the gastrointestinal burden from being increased.

[0022] Two, the placing groove, the mounting groove, the stomach liquid storage cylinder, the nutrient liquid storage cylinder, the cylinder cover, the lead screw, the rotating block, the fixed plate, the rubber strip, the sliding rod and the limiting plate are matched and arranged, the stomach liquid storage cylinder and the nutrient liquid storage cylinder are respectively placed in the inside of the placing groove, the rotating block is rotated to drive the lead screw to rotate, the threads between the lead screw and the protective shell are matched, the lead screw is rotated to drive the fixed plate to move under the guidance of the sliding rod, so that the rubber strip can be in contact with the stomach liquid storage cylinder and the nutrient liquid storage cylinder, the stomach liquid storage cylinder and the nutrient liquid storage cylinder can be conveniently limited, the stomach liquid storage cylinder and the nutrient liquid storage cylinder can be conveniently mounted on the upper surface of the placing groove, and the use of the device is convenient.

[0023] Three, the nutrient liquid storage cylinder, the cylinder cover, the motor, the rotating rod, the heating rod and the stirring blade are matched and arranged, the device is used, the cylinder cover is opened to conveniently inject the nutrient liquid into the inside of the nutrient liquid storage cylinder for storage, the motor works to drive the rotating rod to rotate, the heating rod is arranged to heat the nutrient liquid stored in the inside of the nutrient liquid storage cylinder, the rotating rod drives the stirring blade to rotate, so that the nutrient liquid in the inside of the nutrient liquid storage cylinder can be stirred, so that the nutrient liquid in the inside of the nutrient liquid storage cylinder can be uniformly heated, and the patient's stomach can be prevented from being stimulated due to too cold nutrient liquid.

[0024] Other advantages, objects and features of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the protective shell of the present application.

[0027] Figure 2 It is a schematic diagram of the internal structure of the protective shell of the present application.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the bearing plate of the present application.

[0029] Figure 4 It is a schematic diagram of the internal structure of the nutrient solution storage cylinder of the present application.

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing assembly of the present application.

[0031] Figure 6 It is a schematic diagram of the connection structure of the nutrient tube and the pressure reducing tube of the present application.

[0032] Figure 7 It is a control schematic diagram of the intelligent controller of the present application.

[0033] In the drawings: 1, protective shell; 2, support leg; 3, switch door; 4, bearing plate; 5, placing groove; 6, mounting groove; 7, gastric juice storage cylinder; 8, nutrient solution storage cylinder; 9, cylinder cover; 10, heating and stirring assembly; 101, motor; 102, rotating rod; 103, heating rod; 104, stirring blade; 11, fixing assembly; 111, screw rod; 112, rotating block; 113, fixing plate; 114, rubber strip; 115, sliding rod; 116, limiting plate; 12, negative pressure suction pump; 13, micro centrifugal pump; 14, pressure reducing tube; 15, nutrient tube; 16, electromagnetic valve one; 17, electromagnetic valve two; 18, outer tube; 19, gastric pressure sensor; 20, communication tube; 21, intelligent controller; 22, heat dissipation groove; 23, transparent observation plate; 24, hanging bracket. DETAILED DESCRIPTION

[0034] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined application purpose, the specific embodiments, structures, features and effects according to the present application will be described in detail below in combination with the drawings and preferred embodiments.

[0035] Embodiment one

[0036] AsFigure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown in the emergency gastric decompression and nutrition supply integrated device, the device comprises a protective shell 1, a set of supporting legs 2 are installed on the bottom surface of the protective shell 1, a switch door 3 is installed on the front surface of the protective shell 1, a bearing plate 4 is installed on the inner wall of the protective shell 1, two placing grooves 5 are opened on the upper surface of the bearing plate 4, two installation grooves 6 are opened on the bottom surface of the bearing plate 4, a gastric juice storage cylinder 7 and a nutrient liquid storage cylinder 8 are respectively placed in the inner part of the two placing grooves 5, cylinder covers 9 are installed on the upper surfaces of the gastric juice storage cylinder 7 and the nutrient liquid storage cylinder 8, and a heating and stirring assembly 10 is installed in the interior of the nutrient liquid storage cylinder 8.

[0037] A fixing assembly 11 is installed in the interior of the protective shell 1, a negative pressure suction pump 12 and a micro centrifugal pump 13 are respectively installed on the bottom surfaces of the gastric juice storage cylinder 7 and the nutrient liquid storage cylinder 8, a pressure reducing pipe 14 is installed on the input end of the negative pressure suction pump 12, a nutrient pipe 15 is installed on the output end of the micro centrifugal pump 13, an electromagnetic valve one 16 and an electromagnetic valve two 17 are respectively installed on the outer surfaces of the pressure reducing pipe 14 and the nutrient pipe 15, an outer pipe 18 is installed on the outer surfaces of the pressure reducing pipe 14 and the nutrient pipe 15, a gastric pressure sensor 19 is installed on the end of the outer pipe 18 away from the protective shell 1, a communication pipe 20 is fixedly communicated with the ends of the pressure reducing pipe 14 and the nutrient pipe 15 away from the protective shell 1, an intelligent controller 21 is installed on the front surface of the switch door 3, heat dissipation grooves 22 are opened on the left and right side surfaces of the protective shell 1, dustproof nets are installed on the inner walls of the two heat dissipation grooves 22, transparent observation plates 23 are fixedly embedded on the left and right side surfaces of the protective shell 1, two hanging supports 24 are installed on the back surface of the protective shell 1, and a set of anti-skid strips are installed on the inner walls of the two hanging supports 24.

[0038] In the embodiment, the protective shell 1 provides protection and installation basis for the whole device, the supporting legs 2 are installed on the bottom surface of the protective shell 1 and play a role in supporting the device to make the device stably placed. The switch door 3 is installed on the front surface of the protective shell 1, which is convenient for medical staff to open and operate and maintain the interior of the device. The bearing plate 4 is fixed on the inner wall of the protective shell 1 and is used for bearing the gastric juice storage cylinder 7 and the nutrient liquid storage cylinder 8. The placing grooves 5 are opened on the upper surface of the bearing plate 4 and are used for placing the gastric juice storage cylinder 7 and the nutrient liquid storage cylinder 8 to preliminarily position them. The installation grooves 6 are opened on the bottom surface of the bearing plate 4 and provide installation space for the negative pressure suction pump 12 and the micro centrifugal pump 13. The cylinder covers 9 are installed on the upper surfaces of the gastric juice storage cylinder 7 and the nutrient liquid storage cylinder 8 and can prevent dust and other impurities from entering the cylinders. Meanwhile, the cylinder covers 9 are convenient for opening to add or take out the contents when needed. The heating and stirring assembly 10 is installed in the interior of the nutrient liquid storage cylinder 8 and is used for heating and stirring the nutrient liquid. The fixing assembly 11 is installed in the interior of the protective shell 1 and is used for fixing the gastric juice storage cylinder 7 and the nutrient liquid storage cylinder 8 to ensure their stability during the operation of the device.

[0039] The negative pressure suction pump 12 is installed at the bottom of the gastric juice storage cylinder 7, communicates with the gastric juice storage cylinder 7 through the decompression pipe 14, and is used for extracting gastric juice. The micro centrifugal pump 13 is installed at the bottom of the nutrient liquid storage cylinder 8, communicates with the nutrient liquid storage cylinder 8 through the nutrient pipe 15, and is used for delivering nutrient liquid. The electromagnetic valve one 16 and the electromagnetic valve two 17 are respectively installed on the outer surfaces of the decompression pipe 14 and the nutrient pipe 15, and are used for controlling the opening and closing of the pipes. The outer pipe 18 is sleeved on the outer surfaces of the decompression pipe 14 and the nutrient pipe 15, and the end thereof away from the protective shell 1 is provided with the gastric pressure sensor 19, which is used for being inserted into the stomach of the patient and monitoring the gastric pressure. The communication pipes 20 are fixedly communicated with the ends of the decompression pipe 14 and the nutrient pipe 15 away from the protective shell 1, and are used for communicating with the stomach of the patient. The intelligent controller 21 is installed on the front surface of the switch door 3, is electrically connected with the gastric pressure sensor 19, the negative pressure suction pump 12, the micro centrifugal pump 13, the electromagnetic valve one 16 and the electromagnetic valve two 17, and is used for receiving the signal of the gastric pressure sensor 19 and controlling the operation of each component. The heat dissipation grooves 22 are formed on the left and right side surfaces of the protective shell 1, and the inner walls thereof are provided with dustproof nets, which can prevent dust from entering and help the device to dissipate heat. The transparent observation plates 23 are fixedly embedded on the left and right side surfaces of the protective shell 1, and are used for facilitating the medical staff to observe the internal conditions of the device. The hanging supports 24 are installed on the back surface of the protective shell 1, and the inner walls thereof are provided with anti-skid strips, which can make the device be hung at a suitable position and increase the flexibility of placing the device.

[0040] The working steps of the embodiment are as follows:

[0041] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 6 , in use, the medical staff inserts the outer pipe 18 into the stomach of the patient from the nasal cavity, the gastric pressure sensor 19 monitors the gastric pressure of the patient in real time, and transmits the signal to the intelligent controller 21. When the pressure signal received by the intelligent controller 21 exceeds the preset threshold value, the electromagnetic valve one 16 is controlled to be opened, the negative pressure suction pump 12 is started after a time delay, the gastric juice in the stomach of the patient is extracted by the negative pressure suction pump 12 through the decompression pipe 14 and the communication pipe 20, and is stored in the gastric juice storage cylinder 7, so as to realize gastric decompression. When the gastric pressure is reduced to a certain extent, the intelligent controller 21 controls the micro centrifugal pump 13 to be started, the electromagnetic valve two 17 is opened after a time delay, and the nutrient liquid in the nutrient liquid storage cylinder 8 is injected into the stomach of the patient through the nutrient pipe 15 and the communication pipe 20 by the micro centrifugal pump 13, so as to realize nutrient supply. In the whole process, the heat dissipation grooves 22 and the dustproof nets cooperate to help the device to dissipate heat, the transparent observation plates 23 facilitate the medical staff to observe the internal conditions, and the hanging supports 24 can be used to hang and place the device according to the needs.

[0042] Example two

[0043] As shown in Figure 1 , Figure 2 , Figure 4 , and Figure 5As shown, the heating and stirring assembly 10 includes a motor 101 fixedly embedded in the upper surface of the nutrient solution storage cylinder 8, a rotating rod 102 is installed at the output end of the motor 101, a heating rod 103 is installed at the bottom end of the rotating rod 102, and two groups of stirring blades 104 are installed on the outer surface of the rotating rod 102.

[0044] The fixing assembly 11 includes a screw rod 111 threadedly connected to the upper surface of the protective shell 1, a rotating block 112 is installed at the top of the screw rod 111, and the bottom end of the rotating block 112 is rotatably connected to a fixing plate 113, and the fixing plate 113 is adapted to the gastric juice storage cylinder 7 and the nutrient solution storage cylinder 8. A group of rubber strips 114 are installed on the bottom surface of the fixing plate 113. The fixing assembly 11 also includes two sliding rods 115 slidably connected to the upper surface of the protective shell 1, the bottom ends of the two sliding rods 115 are connected to the upper surface of the fixing plate 113, and the tops of the two sliding rods 115 are installed with limiting plates 116.

[0045] In this embodiment, the motor 101 is fixedly embedded in the upper surface of the nutrient solution storage cylinder 8, and its output end is connected to the rotating rod 102, which is used to drive the rotating rod 102 to rotate. A heating rod 103 is installed at the bottom end of the rotating rod 102, and two sets of stirring blades 104 are installed on the outer surface. When the rotating rod 102 rotates, it drives the heating rod 103 and the stirring blades 104 to rotate. The heating rod 103 is used to heat the nutrient solution, and the stirring blades 104 are used to stir the nutrient solution so that the nutrient solution is heated evenly.

[0046] The screw rod 111 is threadedly connected to the upper surface of the protective shell 1, and a rotating block 112 is installed at the top, and the bottom end is rotatably connected to the fixed plate 113. Rotating the rotating block 112 can drive the screw rod 111 to rotate, thereby causing the fixed plate 113 to move up and down. The fixed plate 113 is adapted to the gastric juice storage cylinder 7 and the nutrient solution storage cylinder 8, and a rubber strip 114 is installed on the bottom surface. When the fixed plate 113 moves downward, the rubber strip 114 contacts the gastric juice storage cylinder 7 and the nutrient solution storage cylinder 8, playing a fixing and buffering role. The sliding rod 115 is slidably connected to the upper surface of the protective shell 1, and the bottom end is connected to the upper surface of the fixed plate 113. A limiting plate 116 is installed at the top for guiding and limiting the movement of the fixed plate 113 to ensure smooth movement of the fixed plate 113.

[0047] The working steps of this embodiment are as follows:

[0048] like Figure 1 、 Figure 2 、 Figure 4 ,and Figure 5As shown, when the nutrient solution needs to be added, open the barrel cover 9 to inject the nutrient solution into the nutrient solution storage barrel 8, when the nutrient solution needs to be heated, the intelligent controller 21 controls the motor 101 and the heating rod 103 to work, the motor 101 drives the rotating rod 102 to rotate, driving the stirring blade 104 to rotate and stir the nutrient solution, while the heating rod 103 heats the nutrient solution, so that the nutrient solution is uniformly heated to an appropriate temperature, when the gastric juice storage barrel 7 and the nutrient solution storage barrel 8 are installed, they are respectively placed in the placing groove 5 on the bearing plate 4, then the rotating block 112 is rotated, the screw rod 111 rotates to drive the fixed plate 113 to move downward under the guidance of the sliding rod 115, until the rubber strip 114 is in close contact with the gastric juice storage barrel 7 and the nutrient solution storage barrel 8, and they are fixed in the placing groove 5, ensuring that they do not shake during the operation of the device.

[0049] Example three

[0050] As Figure 2 and Figure 7 shown, the intelligent controller 21 is electrically connected with the gastric pressure sensor 19, and real-time gastric pressure signals are collected, the intelligent controller 21 is electrically connected with the negative pressure suction pump 12, the micro centrifugal pump 13, the electromagnetic valve one 16 and the electromagnetic valve two 17, the intelligent controller 21 controls the opening and closing of the negative pressure suction pump 12 and the electromagnetic valve one 16 based on a pressure gradient early warning model, and the specific control logic is: the pressure gradient calculation formula is: wherein, G p is a pressure gradient coefficient, representing the ratio of pressure change per unit time to sensitivity reference, P t is the current pressure value, P base is the basic pressure threshold value, which is determined by the lower limit of the physiological safe pressure of the human stomach, Δt is the sampling time interval, S p is the pressure sensitivity coefficient, which is an individualized parameter fitted from clinical data, and the value range is 0.8-1.2; G p ≥G set and the duration exceeds T1, G set is a preset gradient threshold value, T1 is a trigger delay threshold value, the intelligent controller 21 triggers the cascade control logic through a time sequence control algorithm, and the electromagnetic valve one 16 is preferentially opened, and the negative pressure suction pump 12 is started after a delay of ΔT to avoid instantaneous pressure impact, and ΔT is a mechanical response compensation time.

[0051] The intelligent controller 21 controls the working state of the micro centrifugal pump 13 and the electromagnetic valve two 17 based on a nutrition supply feasibility index model, and the feasibility index calculation formula is: wherein, F n is the nutrition supply feasibility index, which is a dimensionless parameter, and the value range is [0, 1], α is a pressure safety weight coefficient, β is a nutrition solution remaining amount weight coefficient, and γ is a pressure stability weight coefficient, P currentis the current gastric pressure, P safe V is the upper limit of safety pressure, which is the physiological tolerance threshold of the stomach determined by clinical research. nut is the volume of the remaining nutrient solution, V store is the storage cylinder volume, R p is the pressure change rate, λ is the dynamic suppression factor, which is used to adjust the impact of pressure fluctuation on feasibility, F n ≥F thresh When F thresh To preset the feasibility adjustment value, the intelligent controller 21 first starts the micro centrifugal pump 13, delays opening of the second solenoid valve 17, and simultaneously controls the heating and stirring component 10 to heat the nutrient solution to 37±0.5°C.

[0052] The intelligent controller 21 optimizes the switching logic between decompression and nutrition supply through a dual-mode collaborative control algorithm. The mode switching criterion formula is: Among them, D s is the mode switching decision value, P(t) is the pressure curve function at time t, which is obtained by fitting the real-time data collected by the gastric pressure sensor 19, and P target is the target pressure value, the set point is dynamically adjusted according to the patient's clinical status, t0 and t1 are the start and end time of the integration interval, respectively, K t is the time weight coefficient, and the initial value is dynamically adjusted according to the treatment stage; the dual-pump synergistic efficiency formula is: Among them, E coop Q is the synergy efficiency index, a dimensionless parameter that characterizes the working efficiency under unit pressure. decomp is the pressure reduction flow rate, τ decomp Q is the decompression time, nut is the nutrient flow, τ nut is the nutrition duration, P avg is the mean gastric pressure, t total is the total working time of the device; D s ≥D thresh And E coop <E min When D thresh is the mode switching threshold, E min As the minimum efficiency threshold, the intelligent controller 21 optimizes the dual pump start-up and shutdown intervals through the dynamic correction coefficient δ(t) to achieve pressure fluctuation suppression, where δ(t) is determined by the following formula:

[0053] In this embodiment, in this embodiment, the intelligent controller 21 is electrically connected to the gastric pressure sensor 19, and receives the gastric pressure signal collected by the gastric pressure sensor 19 in real time. The intelligent controller 21 is also electrically connected to the negative pressure suction pump 12, the micro centrifugal pump 13, the solenoid valve 16 and the solenoid valve 2 17 respectively, and controls the opening and closing and operation of these components according to the received pressure signal and the preset model and formula. The pressure gradient early warning model is used to determine whether the decompression function needs to be started. When the pressure gradient coefficient G p Greater than or equal to the preset gradient threshold G set When the duration exceeds the trigger delay threshold T1, the intelligent controller 21 triggers the cascade control logic, first opens the solenoid valve 16, and starts the negative pressure suction pump 12 after the mechanical response compensation time ΔT is delayed. The nutrition supply feasibility index model is used to determine whether the nutrition supply conditions are met. When the nutrition supply feasibility index F n Greater than or equal to the preset feasibility threshold F thresh When the temperature reaches 37°C, the intelligent controller 21 starts the micro centrifugal pump 13, opens the solenoid valve 17 after a delay, and controls the heating and stirring component 10 to heat the nutrient solution to 37±0.5°C. The dual-mode collaborative control algorithm is used to optimize the switching logic between pressure reduction and nutrient supply. The mode switching decision value D is calculated by the mode switching criterion formula. s , calculate the synergistic efficiency index E through the dual pump synergistic efficiency formula coop , when D s Greater than or equal to the mode switching threshold D thresh And E coop Less than the minimum efficiency threshold E min When , the intelligent controller 21 optimizes the dual pumps through the dynamic correction coefficient δ(t).

[0054] The working steps of this embodiment are as follows:

[0055] like Figure 2 and Figure 7 As shown, the gastric pressure sensor 19 collects gastric pressure data in real time and transmits it to the intelligent controller 21. The intelligent controller 21 calculates the pressure gradient coefficient according to the pressure gradient calculation formula. p ≥G set When the duration exceeds T1, the intelligent controller 21 first opens the electromagnetic valve 16, and then starts the negative pressure suction pump 12 to reduce the pressure after a delay of ΔT. At the same time, the intelligent controller 21 calculates the feasibility index according to the calculation formula of the nutrient supply feasibility index. When F n ≥F thresh When the micro centrifugal pump 13 is started first, the electromagnetic valve 17 is opened after a delay to supply nutrients, and the heating and stirring component 10 is controlled to heat the nutrient solution. In addition, the intelligent controller 21 calculates the mode switching decision value through the mode switching criterion formula; the synergistic efficiency index is calculated through the dual pump synergistic efficiency formula. When D s ≥Dthresh And E coop <E min At the same time, the dynamic correction coefficient is used to optimize the opening and closing intervals of the dual pumps, suppress pressure fluctuations, and achieve efficient switching and coordinated work between the decompression and nutrient supply modes.

[0056] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An integrated device for emergency gastric decompression and nutrition supply, characterized in that: The device comprises a protective shell (1), a group of supporting legs (2) is installed on the bottom surface of the protective shell (1), a switch door (3) is installed on the front surface of the protective shell (1), a carrying plate (4) is installed on the inner wall of the protective shell (1), two placement grooves (5) are provided on the upper surface of the carrying plate (4), two installation grooves (6) are provided on the bottom surface of the carrying plate (4), a gastric juice storage cylinder (7) and a nutrient solution storage cylinder (8) are respectively placed inside the two placement grooves (5), the upper surfaces of the gastric juice storage cylinder (7) and the nutrient solution storage cylinder (8) are both installed with cylinder covers (9), a heating and stirring component (10) is installed inside the nutrient solution storage cylinder (8), a fixing component (11) is installed inside the protective shell (1), and the bottom surface of the gastric juice storage cylinder (7) is provided with a fixing component (11). A negative pressure suction pump (12) and a micro centrifugal pump (13) are respectively installed on the bottom surface of the nutrient solution storage cylinder (8); a pressure reducing pipe (14) is installed on the input end of the negative pressure suction pump (12); a nutrient tube (15) is installed on the output end of the micro centrifugal pump (13); a solenoid valve 1 (16) and a solenoid valve 2 (17) are respectively installed on the outer surfaces of the pressure reducing pipe (14) and the nutrient tube (15); an outer tube (18) is installed on the outer surfaces of the pressure reducing pipe (14) and the nutrient tube (15); a gastric pressure sensor (19) is installed on one end of the outer tube (18) away from the protective shell (1); a connecting pipe (20) is fixedly connected to one end of the pressure reducing pipe (14) and the nutrient tube (15) away from the protective shell (1); and an intelligent controller (21) is installed on the front of the switch door (3).

2. The integrated device for emergency gastric decompression and nutrition supply according to claim 1, characterized in that: The left and right sides of the protective shell (1) are both provided with heat dissipation grooves (22), the inner walls of the two heat dissipation grooves (22) are both installed with dustproof nets, and the left and right sides of the protective shell (1) are both fixedly inlaid with transparent observation panels (23).

3. The integrated device for emergency gastric decompression and nutrition supply according to claim 1, characterized in that: Two suspension brackets (24) are installed on the back of the protective shell (1), and a group of anti-slip strips are installed on the inner walls of the two suspension brackets (24).

4. The integrated device for emergency gastric decompression and nutrition supply according to claim 1, characterized in that: The heating and stirring assembly (10) comprises a motor (101) fixedly embedded in the upper surface of the nutrient solution storage cylinder (8); a rotating rod (102) is installed at the output end of the motor (101); a heating rod (103) is installed at the bottom end of the rotating rod (102); and two groups of stirring blades (104) are installed on the outer surface of the rotating rod (102).

5. The integrated device for emergency gastric decompression and nutrition supply according to claim 1, characterized in that: The fixing assembly (11) includes a screw rod (111) threadedly connected to the upper surface of the protective shell (1), a rotating block (112) is installed at the top end of the screw rod (111), and a fixing plate (113) is rotatably connected to the bottom end of the rotating block (112), and the fixing plate (113) is adapted to the gastric juice storage cylinder (7) and the nutrient solution storage cylinder (8), and a group of rubber strips (114) are installed on the bottom surface of the fixing plate (113).

6. The integrated device for emergency gastric decompression and nutrition supply according to claim 5, characterized in that: The fixing assembly (11) further includes two sliding rods (115) slidably connected to the upper surface of the protective shell (1), the bottom ends of the two sliding rods (115) are connected to the upper surface of the fixing plate (113), and the top ends of the two sliding rods (115) are installed with a limiting plate (116).

7. The integrated device for emergency gastric decompression and nutrition supply according to claim 1, characterized in that: The intelligent controller (21) is electrically connected to the gastric pressure sensor (19) to collect gastric pressure signals in real time. The intelligent controller (21) is electrically connected to the negative pressure suction pump (12), the micro centrifugal pump (13), the solenoid valve 1 (16) and the solenoid valve 2 (17) respectively. The intelligent controller (21) controls the opening and closing of the negative pressure suction pump (12) and the solenoid valve 1 (16) based on the pressure gradient early warning model. The specific control logic is as follows: The pressure gradient calculation formula is: Among them, G p is the pressure gradient coefficient, P t is the current pressure value, P base is the basic pressure threshold, Δt is the sampling time interval, S p is the pressure sensitivity coefficient; G p ≥G set When the duration exceeds T1, the intelligent controller (21) triggers the cascade control logic through the timing control algorithm, preferentially opens the electromagnetic valve 1 (16), and starts the negative pressure suction pump (12) after a delay of ΔT.

8. The integrated device for emergency gastric decompression and nutrition supply according to claim 7, characterized in that: The intelligent controller (21) controls the working states of the micro centrifugal pump (13) and the second solenoid valve (17) based on a nutrient supply feasibility index model, and the feasibility index calculation formula is: Among them, F n is the nutrient supply feasibility index, α is the pressure safety weight coefficient, β is the nutrient solution residual weight coefficient, γ is the pressure stability weight coefficient, P current is the current gastric pressure, P safe is the upper limit of safety pressure, V nut is the volume of the remaining nutrient solution, V store is the storage cylinder volume, R p is the pressure change rate, λ is the dynamic suppression factor, F n ≥F thresh When the temperature is high, the intelligent controller (21) starts the micro centrifugal pump (13), delays the opening of the second solenoid valve (17), and synchronously controls the heating and stirring component (10) to heat the nutrient solution to 37±0.5°C.

9. The integrated device for emergency gastric decompression and nutrition supply according to claim 8, characterized in that: The intelligent controller (21) optimizes the switching logic of pressure reduction and nutrition supply through a dual-mode collaborative control algorithm, wherein: The mode switching criterion formula is: Among them, D s is the mode switching decision value, P(t) is the pressure curve function at time t, which is obtained by fitting the real-time data collected by the gastric pressure sensor (19), and P target is the target pressure value, t0 and t1 are the start and end time of the integration interval respectively, K t is the time weight coefficient; The formula for dual pump synergistic efficiency is: Among them, E coop is the synergy efficiency index, Q decomp is the pressure reduction flow rate, τ decomp Q is the decompression time, nut is the nutrient flow, τ nut is the nutrition duration, P avg is the mean gastric pressure, t total is the total working time of the device; D s ≥D thresh And E coop <E min When , the intelligent controller (21) optimizes the dual pump opening and closing interval through the dynamic correction coefficient δ(t) to achieve pressure fluctuation suppression, where δ(t) is determined by the following formula: δ(t)

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