A portable intestinal fluid reinfusion device

Abstract

The present invention discloses a portable intestinal fluid reinfusion device, which belongs to the field of intestinal fluid recovery devices. The portable intestinal fluid reinfusion device comprises a metering barrel for containing intestinal fluid, a liquid inlet pipe, and a liquid outlet pipe. The liquid inlet pipe is used to connect the metering barrel with the proximal end of the intestine and is communicated with the top of the metering barrel. The liquid outlet pipe is used to connect the metering barrel with the distal end of the intestine and is communicated with the bottom of the metering barrel. A peristaltic pump is arranged on one side of the metering barrel, and the liquid outlet pipe passes through the pump head of the peristaltic pump. The portable intestinal fluid reinfusion device disclosed by the present invention is small in size and easy to carry, and can simulate the peristalsis of the intestine to slowly transport intestinal fluid, and has strong practicality.

Description

Technical Field

[0001] The invention relates to the field of intestinal fluid reinfusion devices, and in particular to a portable intestinal fluid reinfusion device. Background Art

[0002] Intestinal fistula usually refers to an abnormal channel between the gastrointestinal tract and other hollow organs, or between the intestine and the abdominal cavity or the abdominal wall. Due to the existence of abnormal channels, intestinal fistulas are prone to outflow of intestinal contents, thereby causing a series of lesions such as infection, loss of nutrient solution and digestive fluid, malnutrition and organ dysfunction. Long-term loss of nutrient solution and digestive fluid will also destroy the patient's homeostasis and nutritional status. In order to overcome the above problems, intestinal fluid reinfusion devices are used clinically to reinfuse intestinal fluids such as nutrient solution and digestive fluid into the healthy intestine. In existing clinical practice, ostomy bags are often used to recover ostomy fluid at the proximal end of the intestine, and then the ostomy fluid is transported to a large ostomy recovery device for buffering and output using an infusion pipeline, and then the ostomy fluid is reinfused to the distal end of the intestine through another long pipeline, so as to be reinfused into the patient's body. There are many inconveniences in the actual use of this device. For example: 1. The reinfusion procedure is complicated, which is not conducive to maintaining the timeliness of the ostomy fluid, and intestinal probiotics are easily contaminated and denatured during the reinfusion process. 2. The infusion pipeline is too long and there is no temperature guarantee, which is easy to lose the activity of digestive enzymes. 3. Fistula reinfusion takes a long time, and the reinfusion machine is large and cannot be carried. The patient needs to stay in bed for a long time, which affects the patient's range of activities and is prone to complications. 4. The infusion speed of enteral fluid cannot be controlled in real time, which is not conducive to precise regulation. 5. If the existing reinfusion machine is used without long-distance transportation and buffering, short-distance transportation will easily make it difficult to control the reflux speed of the fistula fluid, and it is impossible to ensure the slow movement of enteral fluid similar to that in the human body.

[0003] Chinese patent document publication number CN207768755U discloses a jejunostomy tube nutrient solution delivery device, including a fluid rehydration bag, a heater, a stopcock, a one-way valve, a rubber tube and a jejunostomy tube. The fluid rehydration bag is connected to the jejunostomy tube through the rubber tube, the heater is arranged on the outer surface of the fluid rehydration bag, the stopcock is arranged on the rubber tube at the outlet of the fluid rehydration bag, and the one-way valve is arranged at the connection between the rubber tube and the jejunostomy tube. The one-way valve arranged on the pipeline can effectively prevent the phenomenon of food reflux due to the increase in pipe diameter. A stopcock is arranged on the pipeline below the fluid rehydration bag, which can effectively control the speed of food entering the intestine. The above-mentioned jejunostomy tube nutrient solution delivery device controls the speed of food entering the intestine through a stopcock, and inflates through an air pump to achieve slow pressurization to achieve the purpose of slowly replenishing nutrient solution. This device is difficult to use in actual clinical processes, mainly because the peristalsis speed of the small intestine is relatively slow, with a rate of about 0.5-2.0cm / s. At this time, the opening of the stopcock can only be adjusted to a very small degree. Obviously, this very small opening is not suitable for intestinal fluid with high viscosity, and blockage is very likely to occur. In addition, it is even more difficult to control the fluid replenishment through a handheld air pump. Summary of the invention

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to provide a portable intestinal fluid reinfusion device, which is small in size and easy to carry, and can simulate the peristalsis of the intestine to slowly transport intestinal fluid.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The portable intestinal fluid reinfusion device provided by the present invention comprises a peristaltic pump and an intestinal fluid delivery pipeline with two ends respectively connected to the proximal end and the distal end of the intestine, and the intestinal fluid delivery pipeline passes through the pump head of the peristaltic pump.

[0007] A further technical solution of the present invention is that it includes a metering barrel for containing intestinal fluid, the intestinal fluid delivery pipeline includes a liquid inlet pipeline and a liquid outlet pipeline, the liquid inlet pipeline is used to connect the metering barrel with the proximal end of the intestine, and is communicated with the top end of the metering barrel, the liquid outlet pipeline is used to connect the metering barrel with the distal end of the intestine, and is communicated with the bottom end of the metering barrel, the peristaltic pump is located on one side of the metering barrel, and the liquid outlet pipeline passes through the pump head of the peristaltic pump.

[0008] A further technical solution of the present invention is that the pump head includes a tube mounting frame and a rotor with a plurality of sticks fixed thereon, and a fixing groove for mounting the intestinal fluid delivery pipeline is provided between the tube mounting frame and the rotor.

[0009] A further technical solution of the present invention is that it also includes a controller, and at least one laser level meter and a gravity sensor are arranged in the metering barrel, and the laser level meter and the gravity sensor are both electrically connected to the controller.

[0010] The gravity sensor is used to detect the posture of the metering barrel. When it detects that the metering barrel is in an upright state, the laser liquid level meter detects multiple liquid level detection values ​​within a preset time, and the controller calculates the average value of the multiple detection values ​​within the preset time as the height data of the collected liquid level.

[0011] A further technical solution of the present invention is that it also includes a constant temperature auxiliary heater, which is electrically connected to the controller and is located on the bottom joint of the metering barrel.

[0012] A further technical solution of the present invention is that it also includes a one-way valve for preventing the backflow of intestinal fluid, and the one-way valve is fixed on the bottom joint of the metering barrel or on the liquid outlet pipe.

[0013] A further technical solution of the present invention is that it also includes a fixing frame, the metering barrel is fixed in the left frame body of the fixing frame, and the right side of the fixing frame is fixed with a controller, a motor driver and a stepper motor in sequence from top to bottom.

[0014] A further technical solution of the present invention is that one end of the liquid inlet pipe is provided with a proximal connector for connecting to the proximal end of the intestine, and the other end thereof is detachably connected to the upper part of the metering barrel and the two are interconnected, one end of the liquid outlet pipe is detachably connected to the lower part of the metering barrel and the two are interconnected, and the other end thereof is provided with a distal connector for connecting to the distal end of the intestine, and the proximal connector and / or the distal connector are both configured as drainage plum blossom heads.

[0015] A further technical solution of the present invention is that the drainage plum blossom head includes a bud-shaped bulge and one or more drainage holes, and one or more drainage holes are located on the outer surface of the bud-shaped bulge.

[0016] A further technical solution of the present invention is that the proximal connector and / or the distal connector is provided with a leakproof sealing ring, and the leakproof sealing ring is composed of a hydrogel dressing mesh layer, a polyurethane foam pad, and a polyurethane translucent film from the inside to the outside.

[0017] A further technical solution of the present invention is that the metering barrel comprises a barrel body and a barrel cover, the barrel cover is located above the barrel body, the barrel body and the barrel cover are screwed together, the metering barrel is detachably connected to the top joint, and the metering barrel is detachably connected to the bottom joint.

[0018] A further technical solution of the present invention is that the leakproof sealing ring is composed of a hydrogel dressing mesh layer, a polyurethane foam pad, and a polyurethane translucent film in sequence from the inside to the outside.

[0019] The beneficial effects of the present invention are:

[0020] The portable intestinal fluid reinfusion device provided by the present invention can realize the peristaltic slow transmission of liquid in a small space by setting a peristaltic pump acting on the liquid outlet pipe of the metering barrel, without adopting a large number of control valves and buffer devices often used in the prior art. The working mode of the peristaltic pump can well simulate the peristalsis of the intestine, thereby realizing the slow transmission of intestinal fluid. In addition, the proximal connector and the distal connector both adopt drainage plum blossom heads, and the proximal port of the intestine and the distal port of the intestine can be sleeved on the drainage plum blossom head. The bud-shaped bulge of the drainage plum blossom head can effectively support the proximal port of the large intestine and the distal port of the intestine. Under the action of the restoring force after expansion, the proximal port of the large intestine and the distal port of the intestine are prevented from slipping out of the joint. Furthermore, a special leak-proof sealing ring made of three layers of leak-proof material is sleeved on the connection between the proximal port of the intestine and the distal port of the intestine and the proximal connector and the distal connector, further avoiding leakage at the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a portable intestinal fluid reinfusion device provided in Embodiment 1 of the present invention;

[0022] Figure 2 is a schematic structural diagram of a portable intestinal fluid reinfusion device provided in Embodiment 2 of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a peristaltic pump provided in a specific embodiment of the present invention;

[0024] Figure 4 is a schematic structural diagram of a proximal connector provided in a specific embodiment of the present invention;

[0025] Figure 5 is a top view of a leak-proof sealing ring provided in a specific embodiment of the present invention;

[0026] Figure 6 is a circuit diagram of a portable intestinal fluid reinfusion device provided in a specific embodiment of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the portable intestinal fluid reinfusion device provided in the third embodiment of the present invention.

[0028] In the figure: 1. Peristaltic pump; 2. Intestinal fluid delivery pipeline; 11. Pump head; 111. Pipe mounting frame; 112. Rotor; 113. Stick; 114. Guide groove; 21. Liquid inlet pipeline; 22. Liquid outlet pipeline; 3. Measuring barrel; 31. Filter screen; 32. Scale ruler; 35. Top joint; 36. Bottom joint; 41. Laser level meter; 411. First laser level meter; 412. Second laser level meter; 42. Constant temperature auxiliary heater; 43. Controller; 431. Outer shell; 44. Touch screen ; 5. One-way valve; 45. Heating plate; 46. Temperature sensor; 47. Gravity sensor; 48. Player; 6. One-way exhaust valve; 7. Fixed frame; 12. Motor driver; 13. Stepper motor; 431. Outer shell; 81. Proximal connector; 82. Distal connector; 83. Bud-shaped bulge; 84. Drainage hole; 9. Leak-proof sealing ring; 91. Hydrogel dressing mesh layer; 92. Polyurethane foam pad; 93. Polyurethane translucent film; 94. Fan-shaped notch; 37. Barrel body; 38. Barrel cover. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0030] Embodiment 1

[0031] like Figure 1As shown, a portable intestinal fluid reinfusion device provided in this embodiment includes a peristaltic pump 1 and an intestinal fluid delivery pipeline 2, wherein the two ends of the intestinal fluid delivery pipeline 2 are respectively connected to the proximal end of the intestine and the distal end of the intestine, and the intestinal fluid delivery pipeline 2 passes through the pump head 11 of the peristaltic pump 1. The proximal end of the intestine and the distal end of the intestine can be directly or indirectly connected through the intestinal fluid delivery pipeline 2, and the peristaltic action of the stick 113 on the rotor 112 of the peristaltic pump 1 causes the tube wall of the intestinal fluid delivery pipeline 2 to be squeezed, thereby driving the flow of intestinal fluid in the intestinal fluid delivery pipeline 2. Preferably, the intestinal fluid delivery pipeline 2 is made of silicone tube, and the peristaltic pump 1 is configured as a finger-shaped peristaltic pump 1. There are three main forms of intestinal movement, including tonic contraction, segmental movement and peristalsis, among which tonic contraction usually occurs under external or internal stimulation to react to stress. Segmental movement often occurs after eating, and almost does not exist on an empty stomach. The frequency of segmental movement of the intestine is usually higher at the head end and the main working area, and lower at the end of the intestine. For example, the frequency of the head end and the main working area of ​​the duodenum is about 10 to 12 times / min, while the frequency of the end is 6 to 9 times / min. In addition, peristalsis occurs in various parts of the intestine, and its main function is to transport the position in the intestine. Its rate is usually about 0.5 to 2.0 cm / s, and the peristaltic speed of the proximal small intestine is greater than that of the distal end. The interaction between the peristaltic pump 1 and the intestinal fluid delivery pipeline 2 in this embodiment is mainly to simulate the peristaltic process of the small intestine, thereby slowly advancing the intestinal fluid to move at the working rate of the intestine at different positions. Most of the prior art uses gas pumps or valves to control intestinal fluid, which not only involves many components but also has complex control. It is difficult to carry an intestinal fluid return device, and it is difficult to simulate intestinal peristalsis and is easy to block. Further, in order to enhance the intestinal peristalsis effect, multiple rotors 112 can be set on the peristaltic pump 1 or multiple peristaltic pumps 1 can be used to further enhance the intestinal peristalsis effect. Preferably, the peristaltic pump 1 is configured as a peristaltic pump with adjustable flow and flow display, and the flow display is displayed in real time through the touch screen 44, which is convenient for medical staff to observe the flow rate of intestinal fluid.

[0032] like Figure 3As shown, the pump head 11 includes a tube mounting frame 111 and a rotor 112 fixed with a plurality of sticks 113. A guide groove 114 for mounting the intestinal fluid delivery pipeline 2 is provided between the tube mounting frame 111 and the rotor 112. Specifically, the guide groove 114 is located on the inner wall of the end of the tube mounting frame 111. Preferably, three sticks 113 are fixed on the rotor 112. The shape of the gap between the inner wall of the end of the tube mounting frame 111 and one or two sticks 113 changes continuously during the rotation of the rotor 112. For example, the shape of the gap between the guide groove 114 and the inner wall and one or two sticks 113 changes continuously during the rotation of the rotor 112. When the sticks 113 on the rotor 112 crush the intestinal fluid delivery pipeline 2, the intestinal fluid in the intestinal fluid delivery pipeline 2 will be thrown out. After crushing, the intestinal fluid delivery pipeline 2 restores its shape, generates vacuum negative pressure, and continuously sucks in the intestinal fluid, so that the intestinal fluid moves slowly, achieving the purpose of simulating the digestive process of the small intestine.

[0033] Embodiment 2

[0034] like Figure 2 and Figure 3 As shown, the portable intestinal fluid reinfusion device provided in this embodiment includes a metering barrel 3 for containing intestinal fluid, and the intestinal fluid delivery pipeline 2 includes an inlet pipeline 21 and an outlet pipeline 22. The inlet pipeline 21 is used to connect the metering barrel 3 with the proximal end of the intestine, and is communicated with the top end of the metering barrel 3. Specifically, it is connected with the top joint 35 of the metering barrel 3 in a threaded manner. The threaded connection is used to adapt to different types of inlet pipelines 21, that is, different types of inlet pipelines 21 only need to have the same threaded opening to be able to be connected with the top end of the metering barrel 3. The outlet pipeline 22 is used to connect the metering barrel 3 with the distal end of the intestine, and is communicated with the bottom end of the metering barrel 3. Specifically, it is connected with the bottom end joint 36 of the metering barrel 3 in a threaded manner, and can also adapt to different types of outlet pipelines 22. In addition, the selection of different types of inlet pipelines 21 and outlet pipelines 22 is related to the body size of the patient. The peristaltic pump 1 is located on one side of the metering barrel 3, and the liquid outlet pipe 22 passes through the pump head 11 of the peristaltic pump 1. A filter screen 31 is provided in the middle of the metering barrel 3, and the filter screen 31 can filter impurities in the intestinal fluid. The intestinal fluid flowing in from the liquid inlet pipe 21 first enters the metering barrel 3, and after being filtered in the metering barrel 3, it flows out from the liquid outlet pipe 22 under the driving action of the peristaltic pump 1. A scale 32 is provided on the metering barrel 3, and the patient or doctor can determine the intestinal fluid volume in the metering barrel 3 according to the positional relationship between the intestinal fluid in the metering barrel 3 and the scale 32, so that the patient or doctor can observe the intestinal fluid volume in the metering barrel 3, and thus reasonably adjust the rotation speed of the peristaltic pump 1 manually.

[0035] Embodiment 3

[0036] like Figure 7As shown, the portable intestinal fluid reinfusion device provided in this embodiment includes a metering barrel 3 for containing intestinal fluid, and the intestinal fluid delivery pipeline 2 includes a liquid inlet pipeline 21 and a liquid outlet pipeline 22. The liquid inlet pipeline 21 is used to connect the metering barrel 3 with the proximal end of the intestine and is connected to the top of the metering barrel 3.

[0037] The difference between the third embodiment and the second embodiment is that:

[0038] In order to facilitate the cleaning of the metering barrel 3, the metering barrel 3 is set to be a detachable metering barrel 3. At this time, if the internal devices such as the laser level meter 41, the heating plate 45 and the temperature sensor 46 are installed inside the metering barrel 3, these devices are also fixed in the metering barrel 3 in a detachable manner, so as to facilitate the cleaning of the corresponding devices. Preferably, the liquid inlet pipe 21 is connected to the top joint 35 of the metering barrel 3 by threaded matching. The threaded connection method is to adapt to different types of liquid inlet pipes 21, that is, different types of liquid inlet pipes 21 only need to have the same threaded port model to be able to communicate with the top of the metering barrel 3. The liquid outlet pipe 22 is used to connect the metering barrel 3 with the distal end of the intestine and is connected to the bottom outlet of the metering barrel 3. Preferably, the liquid outlet pipe 22 is connected to one end of the bottom joint 36 of the metering barrel 3 by threaded matching. Similarly, the bottom joint 36 can also adapt to different types of liquid outlet pipes 22 while ensuring that the threaded port model is consistent. The bottom outlet of the metering barrel 3 is connected to the other end of the bottom joint 36 by threaded matching. In addition, different types of liquid inlet pipes 21 and liquid outlet pipes 22 are mainly related to the body shape of the patient. Further preferably, the metering barrel 3 includes a barrel body 37 and a barrel cover 38, the barrel cover 38 is located above the barrel body 37, the barrel body 37 and the barrel cover 38 are screwed together, and the barrel cover 38 can be screwed into the top of the barrel body 37, so that the metering barrel 3 itself can be disassembled and cleaned.

[0039] like Figure 2 , Figure 6 and Figure 7As shown, the portable intestinal fluid reinfusion device includes a controller 43. Preferably, at least one laser level meter 41, a gravity sensor 47 or a gyroscope is arranged in the metering barrel 3. The laser level meter 41, the gravity sensor 47 or the gyroscope are all electrically connected to the controller 43. The gravity sensor 47 can be fixed on the fixed frame 7 or in the middle of the portable intestinal fluid reinfusion device. Since the patient's body posture is uncertain, that is, the posture of the metering barrel 3 will often change. However, most of the level meters on the market need to maintain the consistency of the container body posture or even the liquid level stable change to accurately measure the liquid level. In order to solve this problem, a gravity sensor 47 or a gyroscope is arranged in the metering barrel 3 to detect the posture of the metering barrel 3, for example: detect whether the metering barrel 3 is in an upright state or lying flat. Now two methods can be used to solve the above problem. The first method is to accurately measure the deflection angle of the metering barrel 3 by a gyroscope, and then correct the liquid level detection value of the laser level meter 41 by the deflection angle. Through experiments, this method has a certain error, which is mainly caused by the frequent changes in the patient's body posture. However, since the portable enteral fluid reinfusion device will basically remain in an upright position during actual use, the patient is usually required to lie down and, with the help of medical staff or by the patient himself, the portable enteral fluid reinfusion device is installed on a fixed base located on the patient's side that keeps the portable enteral fluid reinfusion device upright. This method is not only for measuring the liquid level, but more importantly, to prevent the patient from rolling over when lying down, causing the connecting tube of the portable enteral fluid reinfusion device to fall off or the device to press on the patient's wound. The second method is that the liquid level detection value of the laser liquid level meter 41 is considered valid only when the gravity sensor 47 or the gyroscope detects that the patient is in an upright state during a preset time period. Usually, the detection value of the laser liquid level meter 41 is considered valid only when the multiple liquid level detection values ​​of the laser liquid level meter 41 fluctuate slightly or do not fluctuate and the gravity sensor 47 or the gyroscope detects that the patient is in an upright state, and the average value of the multiple detection values ​​within the preset time is calculated by the controller 43 as the height data of the collected liquid level of the metering bucket 3. The liquid level detection value collected in this way is basically very accurate. Of course, when there is a certain amount of intestinal fluid in the metering bucket 3 and the lying angle is not large, the detection value can be appropriately corrected, and the accuracy of the liquid level detection value can also be maintained at a high level. This method does not mean that the portable intestinal fluid reinfusion device can only be kept in an upright state at all times, but it is not recommended to keep the metering bucket 3 in a lying state for a long time just because large detection errors are likely to occur when lying flat or nearly lying flat. Furthermore, a first laser level meter 411 and a second laser level meter 412 are usually provided in the metering barrel 3. The first laser level meter 411 and the second laser level meter 412 are both electrically connected to the controller 43. The first laser level meter 411 is located on the top inner wall of the metering barrel 3, and the second laser level meter 412 is located on the side wall of the metering barrel 3 and close to the filter net 31. Preferably, the second laser level meter 412 can be located above or below the filter net 31.The first laser level meter 411 is mainly used to measure the height data of the liquid level, and the second laser level meter 412 is used to warn when the liquid level is too low. When the second laser level meter 412 detects that the liquid disappears, it proves that the liquid level is too low. At this time, the controller 43 issues an alarm through the player 48 and / or the touch screen 44. The player 48 is electrically connected to the controller 43 and is controlled by the controller 43. If the gravity sensor 47 or the gyroscope detects that the metering barrel 3 is in a lying state, an alarm should also be issued. At this time, the patient or medical staff should be reminded to adjust the metering barrel 3 to an upright state as soon as possible or install it on an upright fixed seat on the patient's side.

[0040] In summary, the proximal flow rate of the proximal end of the intestine flowing into the metering barrel 3, that is, the intestinal fluid flow rate at the inlet pipe 21, can be judged in real time by the laser level meter 41. Although the laser level meter 41 can only collect the height data of the liquid level, the peristaltic pump 1 is configured as a peristaltic pump with flow display, that is, the peristaltic pump 1 itself has a flow calculation function. The peristaltic pump 1 usually works at a fixed flow rate within a certain period of time, that is, the distal flow rate of the outlet pipe 22 flowing out of the metering barrel 3 is constant, so the proximal flow rate of the proximal end of the intestine flowing into the intestinal fluid can be calculated by the change in the volume of the intestinal fluid in the metering barrel 3. Calculating the real-time proximal flow rate is conducive to monitoring the patient's eating cycle. For example: because patients usually eat at a fixed time periodically, after eating, it is bound to cause excessive proximal flow, so that the laser level meter 41 can only quickly detect this change, thereby assisting the controller 43 in making decisions to control the increase in the speed of the peristaltic pump 1 and increase the distal flow rate, thereby effectively avoiding the accumulation of intestinal fluid in the metering barrel 3, and at the same time, it is also closer to the living habits of the human body. Since the patient's body shape is difficult to predict, in order to avoid misjudgment by the laser level meter 41, when the detection value of the laser level meter 41 exceeds the warning value, an alarm should be used to remind the patient or medical staff to manually adjust the flow rate of the peristaltic pump 1 through the touch screen 44 or button, or set it to a different mode and adjust it to the feeding mode, for example: manually adjust it to the feeding mode and then appropriately correct the flow rate of the peristaltic pump 1. Instead of directly controlling the rotation of the peristaltic pump 1 after the feedback of the laser level meter 41, although this method can provide real-time feedback and real-time control in principle, it may cause danger to the patient's life and health because the height data of the liquid level collected by the laser level meter 41 may have errors. At this time, the patient or medical staff should observe in combination with the scale ruler 32 and then manually adjust the flow rate of the peristaltic pump 1 to achieve the purpose of double confirmation and double insurance. Further preferably, the controller 43 has pre-stored peristaltic frequencies and intestinal fluid rates of different types and different positions of the intestine. The controller 43 can calculate the required peristaltic frequency and required intestinal fluid rate according to the actual fistula surgery position. For example, the required peristaltic frequency and required intestinal fluid rate can be measured by the controller 43 through the distance between the actual fistula surgery position and the proximal end and the distal end of the intestine, or can be input to the controller 43 by the patient or the doctor through the touch screen 44. The peristaltic pump 1 adjusts the pulsating frequency and distal flow of the peristaltic pump 1 based on the required peristaltic frequency and the required intestinal fluid rate. The controller 43 prompts the patient or medical staff to manually correct the peristaltic frequency and intestinal fluid rate through the real-time detection value of the laser liquid level meter 41, so that the peristaltic frequency and intestinal fluid rate at the fistula surgery position are close to or equal to the required peristaltic frequency and required intestinal fluid rate. The controller 43 periodically or intermittently controls the rotation speed of the stepper motor 13 to achieve the goal of periodically or intermittently outputting different intestinal fluid rates, thereby simulating the peristaltic frequency of the intestine.The peristaltic frequency, intestinal fluid rate, proximal flow rate and distal flow rate can all be displayed in real time through a touch screen 44 electrically connected to the controller 43, making it convenient for patients or doctors to obtain the working status of the portable intestinal fluid reinfusion device, thereby optimizing the diagnosis and treatment plan.

[0041] like Figure 2 , Figure 6 and Figure 7 As shown, in order to ensure that the intestinal fluid in the outlet pipe 22 can flow more smoothly and the peristaltic pump 1 is not easily blocked, further, the portable intestinal fluid reinfusion device also includes a constant temperature auxiliary heater 42 and a controller 43. The constant temperature auxiliary heater 42 is electrically connected to the controller 43 and is located on the bottom joint 36 of the metering barrel 3. Under the action of the controller 43, the constant temperature auxiliary heater 42 maintains the intestinal fluid temperature inside the bottom joint 36 at human body temperature or a temperature slightly higher than human body temperature. Since the intestinal fluid has a high viscosity, liquid with excessive viscosity is not conducive to the smooth pumping of the peristaltic pump 1, and the viscosity of the liquid is effectively reduced by heating, so that the intestinal fluid in the outlet pipe 22 connected to the bottom joint 36 can flow more smoothly. In addition, the fluidity of the intestinal fluid can also be made higher by appropriately increasing the diameter of the outlet pipe 22.

[0042] In order to avoid the backflow phenomenon during the flow of intestinal fluid, the portable intestinal fluid reinfusion device further includes a one-way valve 5 for preventing the backflow of intestinal fluid. The one-way valve 5 is fixed on the bottom joint 36 of the metering barrel 3 or on the liquid outlet pipe 22. The one-way valve 5 ensures the unidirectionality of the intestinal fluid flow direction and prevents it from flowing back to the metering barrel 3. It can be seen that the one-way valve 5 can effectively ensure the consistency of the intestinal fluid flow direction.

[0043] In order to prevent the intestinal fluid temperature inside the metering barrel 3 from being too low, causing discomfort to the patient. Furthermore, the portable intestinal fluid reinfusion device also includes a heating plate 45 and a temperature sensor 46. The heating plate 45 is fixed on the back of the metering barrel 3, and its position is just opposite to the scale scale 32. The scale scale 32 is usually located on the front of the metering barrel 3, and the temperature sensor 46 is fixed on the inner wall of the metering barrel 3. The heating plate 45 and the temperature sensor 46 are both electrically connected to the controller 43. The temperature sensor 46 collects the intestinal fluid temperature of the metering barrel 3 in real time and transmits it to the controller 43. When the controller 43 finds that the intestinal fluid temperature collected in real time in the metering barrel 3 is lower than the preset temperature, the heating plate 45 is started, and the temperature warning signal is displayed through the touch screen 44.

[0044] In order to avoid excessive air pressure in the metering barrel 3 and properly discharge excess gas in the intestinal fluid, the portable intestinal fluid reinfusion device further includes a one-way exhaust valve 6, which is arranged at the upper part of the metering barrel 3. Excessive air pressure in the metering barrel 3 will hinder the intestinal fluid from flowing from the proximal end of the intestine into the metering barrel 3. However, since air will be brought into the intestinal fluid, the air pressure in the metering barrel 3 must exceed the threshold value, and the gas should be discharged from the metering barrel 3 in time.

[0045] In order to make the structure of the portable intestinal fluid reinfusion device more compact and convenient to carry, the portable intestinal fluid reinfusion device further includes a fixed frame 7, the metering barrel 3 is fixed in the left frame of the fixed frame 7, and the right side of the fixed frame 7 is fixed with a controller 43, a motor driver 12 and a stepper motor 13 from top to bottom in sequence, the controller 43 is electrically connected to the stepper motor 13 through the motor driver 12, and the touch screen 44 is arranged on the outer shell 431 of the controller 43. The controller 43, the motor driver 12 and the stepper motor 13 are distributed vertically, which is conducive to reducing the thickness of the portable intestinal fluid reinfusion device and making it more convenient to carry.

[0046] like Figure 4 and Figure 5 As shown, for convenience, the liquid inlet pipe 21 and the liquid outlet pipe 22 are fixedly connected to the proximal end of the intestine and the distal end of the intestine respectively. Furthermore, one end of the liquid inlet pipe 21 is provided with a proximal connector 81 for connecting to the proximal end of the intestine, and the other end is fixedly connected to the upper part of the metering barrel 3 and the two are connected to each other. One end of the liquid outlet pipe 22 is fixedly connected to the lower part of the metering barrel 3 and the two are connected to each other, and the other end is provided with a distal connector 82 for connecting to the distal end of the intestine. The proximal connector 81 and the distal connector 82 are provided with a connector structure of a common tube and intestine in clinical practice. Preferably, the proximal connector 81 and / or the distal connector 82 are both configured as a drainage plum blossom head, which is a common connector structure used to connect to the proximal end and the distal end of the intestine. As shown Figure 4 As shown, further preferably, the drainage plum blossom head includes a bud-shaped bulge 83 and one or more drainage holes 84, one or more drainage holes 84 are located on the outer surface of the bud-shaped bulge 83. When the drainage plum blossom head has only one drainage hole 84, it is a modified plum blossom head specially designed in this embodiment, and a larger drainage hole 84 is set in the middle of the modified plum blossom head. This single-hole drainage structure is more conducive to the flow of intestinal fluid. The bud-shaped bulge 83 refers to a joint with a bulge similar to the shape of an unopened bud, which is similar to a sphere with a certain taper on one side. For details, please refer to the shape of the drainage plum blossom head in the accompanying drawings. When the proximal port of the intestine and the distal port of the intestine can be sleeved on the drainage plum blossom head, the bud-shaped bulge 83 of the drainage plum blossom head can effectively support the proximal port of the large intestine and the distal port of the intestine. Under the action of the restoring force of the intestine after expansion, the proximal port of the large intestine and the distal port of the intestine are prevented from slipping out of the joint, which is conducive to avoiding leakage from the proximal port of the intestine and the distal port of the intestine.

[0047] In order to further avoid leakage from the proximal connector 81 and the distal connector 82, the proximal connector 81 and / or the distal connector 82 are further provided with a leakproof sealing ring 9, which is sleeved on the connection between the proximal intestinal port and the distal intestinal port and the corresponding proximal connector 81 and the distal connector 82, and should wrap this connection to further avoid intestinal fluid from leaking from the proximal connector 81 and the distal connector 82. Preferably, the leakproof sealing ring 9 is composed of a hydrogel dressing mesh layer 91, a polyurethane foam pad 92, and a polyurethane translucent film 93 from the inside to the outside. Among them, the hydrogel dressing mesh layer 91 is mainly composed of sulfadiazine silver lipid hydrogel dressing, which can effectively reduce wound infection; the polyurethane foam pad 92 has a certain thickness, and adopts a non-sticky foam bevel design, which is conducive to enhancing the buffering force and reducing indentation; the outer surface of the polyurethane translucent film 93 is provided with a bacteriostatic backing pattern, which has the effects of bacteriostatic, breathable and waterproof. The leakproof sealing ring 9 is provided with multiple layers of leakproof barrier materials, so that it is difficult for intestinal fluid to leak out from the leakproof sealing ring 9, and the reliability of leakproofness at the proximal connector 81 and the distal connector 82 is further enhanced. Figure 5 As shown, preferably, the leakproof sealing ring 9 is an open circle, that is, a fan-shaped notch 94 is provided on the leakproof sealing ring 9, and the fan-shaped notch 94 makes the installation and replacement of the leakproof sealing ring 9 more convenient.

[0048] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A portable intestinal fluid reinfusion device, characterized in that: It includes a peristaltic pump and an intestinal fluid delivery pipeline with two ends respectively connected to the proximal end and the distal end of the intestine; The intestinal fluid delivery pipeline passes through the pump head of the peristaltic pump; Includes a metering bucket for containing enteric fluid; The intestinal fluid delivery pipeline includes a liquid inlet pipeline and a liquid outlet pipeline; The liquid inlet pipe is used to connect the metering barrel with the proximal end of the intestine and is communicated with the top end of the metering barrel; The liquid outlet pipe is used to connect the metering barrel with the distal end of the intestine and is communicated with the bottom end of the metering barrel; The peristaltic pump is located on one side of the metering barrel; The liquid outlet pipeline passes through the pump head of the peristaltic pump; Also includes a controller; The metering barrel is provided with at least one laser level meter and a gravity sensor; The laser level meter and the gravity sensor are both electrically connected to the controller; The gravity sensor is used to detect the posture of the metering bucket. When it detects that the metering bucket is in an upright state, the laser liquid level meter detects multiple liquid level detection values ​​within a preset time, and the controller calculates the average value of the multiple detection values ​​within the preset time as the height data of the collected liquid level; The liquid level detection value of the laser liquid level meter is considered valid only when the gravity sensor or the gyroscope detects that the patient is in an upright state within a preset time period. A first laser liquid level meter and a second laser liquid level meter are arranged in the measuring barrel. Both the first laser liquid level meter and the second laser liquid level meter are electrically connected to the controller. The first laser liquid level meter is located on the top inner wall of the measuring barrel, and the second laser liquid level meter is located on the side wall of the measuring barrel and close to the filter.

2. The portable intestinal fluid reinfusion device according to claim 1, characterized in that: The pump head includes a pipe mounting frame and a rotor with a plurality of sticks fixed thereon; A fixing groove for installing the intestinal fluid conveying pipeline is arranged between the tube mounting frame and the rotor.

3. The portable intestinal fluid reinfusion device according to claim 1, characterized in that Also includes a constant temperature auxiliary heater; The constant temperature auxiliary heater is electrically connected to the controller; The constant temperature auxiliary heater is located on the bottom joint of the metering barrel.

4. The portable intestinal fluid reinfusion device according to claim 1, characterized in that: Also includes a fixed frame; The metering barrel is fixed in the left frame of the fixed frame; The right side of the fixing frame is fixed with a controller, a motor driver and a stepping motor in sequence from top to bottom.

5. The portable intestinal fluid reinfusion device according to claim 1, characterized in that: One end of the liquid inlet pipe is provided with a proximal connector for connecting to the proximal end of the intestine, and the other end is detachably connected to the upper part of the metering barrel and the two are in conduction with each other; One end of the liquid outlet pipe is detachably connected to the lower part of the metering barrel and the two are in communication with each other, and the other end is provided with a distal connector for connecting to the distal end of the intestine; The proximal connector and / or the distal connector are both configured as drainage plum blossom connectors.

6. The portable intestinal fluid reinfusion device according to claim 5, characterized in that: The drainage plum blossom head includes a bud-shaped bulge and one or more drainage holes; One or more drainage holes are located on the outer surface of the bud-shaped bulge.

7. The portable intestinal fluid reinfusion device according to claim 5, characterized in that: The proximal connector and / or the distal connector is provided with a leakproof sealing ring, which is composed of a hydrogel dressing mesh layer, a polyurethane foam pad, and a polyurethane translucent film in sequence from the inside to the outside.

8. The portable intestinal fluid reinfusion device according to claim 1, characterized in that: The metering barrel comprises a barrel body and a barrel cover; The barrel cover is located above the barrel body, and the barrel body and the barrel cover are screw-fitted; The metering barrel is detachably connected to the top joint; The metering barrel is detachably connected to the bottom joint.

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