CN113559340A

CN113559340A - Circulating system capable of detecting components of nutrient solution

Info

Publication number: CN113559340A
Application number: CN202110985486.9A
Authority: CN
Inventors: 李京; 纪媛媛; 俞洁; 李继铎
Original assignee: Xuanwu Hospital
Current assignee: Xuanwu Hospital
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-10-29
Anticipated expiration: 2041-08-25
Also published as: CN113559340B

Abstract

The present invention relates to a circulation system capable of detecting the composition of a nutrient solution, which can suck the residual content in the stomach into an external container for storage and re-feed the content back to the stomach or remain in the container based on the composition of the content stored in the container. The device at least comprises a detection module arranged in the container, an analysis module used for analyzing detection data, a control module used for sending a control signal based on the data analyzed by the analysis module, and a working module used for receiving the control signal of the control module and changing the working state based on the control signal. The detection module is used for detecting indexes and parameters of the stomach and contents of the patient and transmitting the detected information to the analysis module, the analysis module analyzes the indexes and the parameters and then sends data to the control module, and the control module controls the working module to enter different working modes according to the analysis data of the stomach and the contents of the stomach so as to adapt to patients with different disease conditions and different nursing processes.

Description

Circulating system capable of detecting components of nutrient solution

Technical Field

The invention relates to the technical field of medical instruments, in particular to a circulating system capable of detecting components of a nutrient solution.

Background

Aiming at the problems that swallowing and cough reflex of most patients needing nutrition support for a long time is weakened, gastric emptying is delayed to cause gastric fluid retention, the probability that the gastric retention exceeds 200mL of aspiration is increased, the resistance of the patients is reduced, the body regulation capacity is reduced, aspiration pneumonia can be caused probably due to reflux or aspiration of gastric contents, the death rate of the aspiration pneumonia is extremely high, and the difficulty of curing the patients is greatly increased. In order to avoid aspiration, medical staff needs to use a syringe regularly to extract the residue in the stomach from the gastric tube during the patient care process, and the extracted residue in the stomach is directly discarded, which may contain a large amount of nutrients, digestive juice in the stomach of the patient and microorganisms beneficial to digestion. The extracted part not only reduces the amount of nutrient substances actually input by the patient, but also causes the loss of digestive juice in the stomach of the patient and microorganisms beneficial to digestion, reduces the digestive function of the patient, reduces the absorption of the nutrient substances by the patient again, ensures that the actual nutrient intake of the patient cannot be estimated, is inconvenient for medical personnel to master the actual metabolic condition of the patient, and causes the waste of the nutrient substances.

The residual content in the stomach is collected and the nutrient content and PH in the stomach are detected, so that the amount of nutrient components actually absorbed by the user can be analyzed, whether the nutrient components are in normal physiological metabolism level or not can be judged, and guidance and reference can be provided for the subsequent nutrient support process. The collected contents can be re-infused to re-infuse digestive juices and microorganisms into the stomach, so that digestive function in the stomach is restored to some extent and previously unabsorbed nutrients can be re-digested and absorbed.

CN209092212U discloses a nasal feeding back suction regurgitation feeding device, which comprises a medical three-way valve, a liquid storage bag for storing gastric residual liquid and a suction device with a certain space for extracting the gastric residual liquid; the left interface of the medical three-way valve is connected with a first conduit, the right interface of the medical three-way valve is connected with a second conduit, and the upper interface of the medical three-way valve is connected with a third conduit; the medical three-way valve is communicated with the liquid storage bag through the second conduit, and the medical three-way valve is communicated with the suction device through the third conduit. The device is through manual use syringe suction, at first controls first pipe and third pipe intercommunication for can absorb the stomach content to the syringe through the syringe in, control third pipe and second pipe intercommunication again, make the content in the syringe can be poured into the reservoir and store, so repeat many times in order to absorb the remaining content in the stomach to the reservoir and store. When the return transfusion is needed, the first catheter and the second catheter are communicated, so that the content is returned from the liquid storage bag to the stomach again. During the use process, the volume of the syringe is limited, and the overlarge syringe is difficult to control the suction speed smoothly, so that the suction pressure is easily overlarge, and therefore, the syringe is required to be used for repeatedly sucking for multiple times to finish the suction. The on-off states of the first catheter, the second catheter and the third catheter need to be controlled for multiple times in the repeated extraction process, time and labor are consumed, and the use is inconvenient. And the retention of nutrients is unknown, direct return may result in a low nutrient content that adds a digestive burden to the patient's stomach.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the applicant has studied a great deal of literature and patents when making the present invention, but the disclosure is not limited thereto and the details and contents thereof are not listed in detail, it is by no means the present invention has these prior art features, but the present invention has all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention provides a circulation system capable of detecting the composition of a nutrient solution, which sucks the residual contents in the stomach into an external container for storage and re-feeds the contents back to the stomach or remains in the container based on the composition of the contents stored in the container. The circulating system at least comprises a detection module arranged in the container, an analysis module used for analyzing detection data, a control module used for sending a control signal based on the data analyzed by the analysis module, and a working module used for receiving the control signal of the control module and changing the working state based on the control signal. The detection module is used for detecting indexes and parameters of the stomach and contents of the patient and transmitting the detected information to the analysis module, the analysis module analyzes the indexes and the parameters and then sends data to the control module, and the control module controls the working module to enter different working modes according to the analysis data of the stomach and the contents of the stomach so as to adapt to patients with different disease conditions and different nursing processes.

This arrangement is advantageous: (1) the device does not need manual assistance, can automatically extract residues in the stomach at regular time through an external program or according to a detection signal of the detection device, does not need independent care of a nurse, and reduces the probability of aspiration of a patient; (2) the extracted nutrient solution can be stored in a container, the container is isolated from the outside air, the content in the container can be ensured not to be polluted by microorganisms in the outside air, the content can be conveniently re-infused, and the content which is re-infused is ensured to meet the sanitary safety standard; (3) the working of the working module is controlled to re-infuse the contents stored in the container into the stomach of the patient at a controlled speed, so that microorganisms and digestive juice in the stomach of the patient can be supplemented and recovered, the digestive absorption capacity of the patient is improved, the pressure of re-secretion of the digestive juice increased to the stomach of the patient by pumping the residues in the stomach is reduced, and the full utilization of nutrient substances is realized; the feedback speed is controllable, and different feedback speeds can be set according to different patient conditions; (4) the content of various nutrient components and PH in the extracted gastric contents can be analyzed through the detection module and the analysis module, so that medical personnel can judge whether the contents have value or not by reinfusion according to the components and decide whether the extracted contents need to be reinfused or not. When the content is judged to have no return value, the input end of the return pump can be connected to the interior of the rest nutrient solution, and the rest nutrient substances can be input through the return pump.

According to a preferred embodiment, the circulation system operates as follows: when the detection module detects that the concentration of the nutrient components in the content accumulated in the container is higher than a first threshold value, the control module controls the reflux pump actuator to work according to a preset first program; the first program is to start the feedback at the first speed and gradually quicken the feedback at the second speed in the first time and then keep the feedback at the second speed. When the detection module detects that the concentration of the nutrient content of the content accumulated in the container is higher than a second threshold value, the control module controls the reflux pump actuator to work in a preset second program; the second program is to start the feedback at the third speed and gradually increase the feedback to the fourth speed in the first time and then keep the feedback at the fourth speed.

According to a preferred embodiment, the detection module comprises a component analyzer arranged at a first end of the container close to the ground, the component analyzer can detect the nutrient components and the PH of the stomach content in the container and send detection data to the analysis module, the analysis module analyzes and judges the content of each nutrient component and the gastric acid in the stomach content based on the detection data of the component analyzer to generate an analysis result, and the control module judges whether the stomach content has a feedback value based on the analysis result and generates and sends a control signal to the working module.

Such an arrangement is advantageous: according to the concentration of the nutrient substances in the extracted stomach contents, the digestive ability of the patient is adapted, and the nutrient substances can be returned at a speed that the nutrient substances can be supplied to the patient and the burden on the patient can not be caused, so that the burden on the stomach of the patient can be reduced. For example, when the protein content concentration in the extracted stomach contents is high and the absorption capacity of the patient for the proteins is weak, the protein is input at a slower speed, so that the patient has the ability to completely absorb the input proteins without remaining in the stomach again. When the content of saccharides in the extracted stomach contents is low and the absorption capacity of the saccharides by the patient is strong, the saccharides are input at a fast speed, so that the patient can obtain a sufficient supply of saccharides in a short time without worrying about the contents remaining again in the stomach. By setting the first threshold value, no reinfusion takes place when the concentration of the stomach content is below the first threshold value.

According to a preferred embodiment, the device comprises at least a stomach tube for establishing a nutrient channel from the outside to the stomach of a user through the esophagus, a container which is connected with the stomach tube and can generate negative pressure to pump the stomach content out of the stomach and store the stomach content in the interior of the container so as to prevent the stomach content from entering the lung to cause lung infection without being controlled by the patient, and a reflux pump, at least an input end of which is arranged in the container and can convey the stomach content in the container to the stomach of the patient again through the stomach tube.

This arrangement is advantageous: the fluid channel for pumping out the nutrient substances in the stomach from the stomach of the patient and re-infusing the pumped nutrient substances into the stomach from the outside is constructed, and the device controlled by a control signal or manually operated control is used for re-infusing and pumping out the nutrient solution, so that the pumping out and re-infusing speed can be accurately controlled by a machine, and the labor and the energy of medical staff are saved.

According to a preferred embodiment, in a normal working condition, the container has a first end far away from the ground and a second end close to the ground, and the first end of the container is provided with a connecting port for connecting with an external negative pressure generating device and a first tube for connecting with one end of a stomach tube which is not arranged in the stomach. In the case where the container internally generates negative pressure based on the operation of the connected external negative pressure generating device, the stomach contents are passed from the stomach into the container through the stomach tube and the first tube based on the negative pressure.

This arrangement is advantageous: the device is vertically placed in a use state, so that the stomach contents pumped out based on negative pressure can be gathered towards the second end of the container close to the ground based on gravity after flowing out of the tube orifice of the first tube, and cannot be blocked at the outlet of the first tube; and the negative pressure generating device can not enter the negative pressure generating device through a connecting port which is arranged on the first end of the container and is connected with the negative pressure generating device, so that the normal work of the negative pressure generating device is not influenced.

According to a preferred embodiment, the container is arranged with an inverted cone in such a way that the content can be collected with a small amount of content.

Such an arrangement is advantageous: can accumulate to the bottom of the container on the basis of the inverted cone in the case of a small amount of content.

According to a preferred embodiment, the return pump comprises an input for taking in fluid and an output for delivering fluid, the input of the return pump being arranged at the second end of the container in such a way that the contents of the container can be substantially returned. Such an arrangement enables the reflux pump to maintain reflux with a low content of the contents of the container.

According to a preferred embodiment, the output of the reflux pump is provided with a second tube, which is arranged coaxially with and inside the first tube, close to one end of the gastric tube, in such a way that the gastric contents in the container can be re-fed back into the stomach through the gastric tube.

According to a preferred embodiment, said first tube and said second tube constitute a double lumen tube connected to said gastric tube by means of a first connector and a second connector in such a way as to enable a change of the connection of the device without modifying the suction and delivery conditions of said circulatory apparatus.

The first pipe and the second pipe are fixedly connected with each other through the second connecting piece, the first pipe and the second pipe jointly form a double-cavity pipe, the volume of an internal flow channel is kept unchanged, the double-cavity pipe is provided with a fluid inflow channel and a fluid outflow channel, the fluid inflow channel is a channel limited by the inner wall of the second pipe, and the fluid outflow channel is a channel limited by the outer wall of the second pipe and the inner wall of the first pipe, so that when the liquid suction and feedback processes are changed, different processes can be adapted through switching of the fluid outflow channel and the fluid inflow channel, the connection mode does not need to be changed, the use is convenient, and the phenomenon that a connector and even a pipeline are polluted due to frequent connection replacement is avoided. The fixing of the first pipe and the second pipe can ensure that the flow passage in the double-cavity pipe is kept smooth under the condition of moving the container or the reflux pump, and the flow passage in the double-cavity pipe cannot be blocked due to the distortion of the inner or outer pipeline, so that the movement is convenient.

According to a preferred embodiment, said first connector and said second connector are connected by means of an annular suction cup arranged at the end edge of the second connector in a manner adapted to the frequently changing flow direction of the fluid in the pipe.

Such a mode of setting, the sucking disc on the end edge can be in the end edge with the inner wall in close contact with of flaring when "tubaeform" the flaring contact of first connecting piece in to extrude the air in the sucking disc, thereby can press the sucking disc on the inner wall of flaring based on atmospheric pressure, make the end edge of second connecting piece and the inner wall in close connection with the flaring, be difficult for the separation, and difficult production relative movement, make the connection of first connecting piece and second connecting piece more firm. The different moving trends between the gastric tube and the double-lumen tube due to the different flowing directions of the fluid in the process of back infusion and suction cannot cause the first connecting piece and the second connecting piece to be mutually dislocated, so that the moving amount of the gastric tube relative to the nasal cavity of the patient is smaller, and the nasal cavity of the patient is less in friction injury.

Drawings

FIG. 1 is a schematic view of the overall structure of a circulating device in a preferred embodiment of the invention in a conveying process;

FIG. 2 is a schematic view of the overall structure of a circulation device in a preferred embodiment of the present invention during a pumping process;

fig. 3 is a sectional view showing the connection of a first connector and a second connector according to a preferred embodiment of the present invention.

List of reference numerals

100: a gastric tube; 110: a first connecting member; 200: a container; 210: a first end; 220: a second end; 300: a reflux pump; 310: an input end; 320: an output end; 230: a first tube; 330: a second tube; 400: a double lumen tube; 331: an air bag; 411: a first section; 412: a second section; 410: a second connecting member; 413: a through hole; 240: a connecting port; 414: a third section; 415: and (4) sucking discs.

Detailed Description

This is described in detail below with reference to fig. 1-3.

Example 1

Most patients with critical diseases swallow the medicine, cough reflex is weakened, gastric emptying is delayed to cause retention of liquid in the stomach, and aspiration pneumonia caused by regurgitation and aspiration is easy to occur. Inhalation pneumonia has a fatality rate of 40% to 60%, and is a highly susceptible and dangerous disease for critically ill patients if cared for improperly. High gastric residual volume is an early manifestation of enteral nutrition intolerance, and has a direct correlation with aspiration, and frequent aspiration occurs when the gastric residual volume is greater than 150ml for at least two times or greater than 250ml for at least one time, and the frequent aspiration can cause aspiration pneumonia. The maintenance of the residual stomach quantity in a safe range is of great significance to the monitoring of critical patients. The existing mode of sucking stomach contents by a syringe every 4 hours at regular time is operated as follows: the injector is connected to a nasogastric tube, and the nasogastric tube is discarded after being sucked for multiple times so as to reduce the pressure of the stomach, ensure the content of the stomach to be in a safe range and reduce the probability of aspiration; and recording the amount of gastric content withdrawn to assist in the assessment of the patient's condition. However, the content extracted by the injector is mixed with a large amount of digestive juice, and the operation of extracting the gastric content causes the content of the digestive juice in the stomach of a patient to be low, so that the digestive function of the stomach is weakened. In addition, the extracted nutrient solution content contains not only a large amount of digestive juice, but also a large amount of undigested nutrient substances, and the action of directly discarding the extracted nutrient solution content after extraction in the prior art can avoid the aspiration of the patient, but causes many consequences, such as: the digestion capacity is weakened, the body recovery process is slowed down, the nutrient solution is wasted, and the like. The gastric content feedback is a feasible and beneficial technology, which can help to supplement gastric digestive juice to improve the digestion capability of a patient and can absorb undigested and absorbed nutrients again to make full use of. However, in the prior art, the stomach contents extracted by adopting the way of sucking the stomach contents by the syringe are mostly exposed in the air and polluted, which does not meet the sanitary standard and can not be re-infused.

The present embodiment provides a circulatory device comprising at least a gastric tube 100 for establishing a nutrient passage from the outside to the stomach of a user via the esophagus, a container 200 connected to the gastric tube 100 and capable of generating pressure to draw out the gastric contents to the outside of the stomach and store them inside itself to avoid the gastric contents from entering the lungs incorrectly controlled by the patient, causing a pulmonary infection, and a reflux pump at least an input 310 arranged in the container 200 and capable of delivering the gastric contents in the container 200 to the stomach of the patient again via the gastric tube 100. The container 200 can suck the stomach contents into the container 200 through the stomach tube 100 based on the principle of siphon or negative pressure suction, and store in the container 200. The container 200 is a closed container 200 connected to a negative pressure or siphon device, and the accommodating space inside the container 200 is kept isolated from the outside air. Preferably, the container 200 is provided as a rigid container, and the container 200 can be sterilized before use such that the inside of the container 200 is maintained in a sterile state during use, such that the stomach contents stored in the container 200 are not contaminated by the outside air, complying with the hygienic standard of reinfusion. The reflux pump 300 is arranged in the container 200, and the reflux pump 300 is used for conveying the gastric contents stored in the container 200 into the gastric tube 100 again at a certain speed, and finally reaching the stomach of the patient again through the gastric tube 100, so as to feed the extracted digestive juice, the microorganisms in the stomach and the nutrient solution back to the stomach of the patient again, and assist in improving the digestive absorption capacity of the patient. The substances in the extracted gastric contents are also possible to be partially digested into small molecular substances which can be directly absorbed by the patient due to the previous gastric digestion process, and the substances can be directly absorbed and applied to the maintenance of the vital movement of the patient without a complicated digestion process after the patient is reinfused again, so that the digestion burden of the patient can be reduced.

According to a preferred embodiment, the container 200 has a receiving cavity for receiving the aspirated digestive fluid, the receiving cavity being arranged to be at least gravitationally separable into a first end 210 remote from the ground and a second end 220 close to the ground in normal use of the container 200. A connection pipe for connecting an external suction device, which sucks air contained inside the container 200 through the connection pipe so that a negative pressure is generated inside the container 200, is provided on the second end 220 of the container 200. The first end 210 of the container 200 is further provided with a first tube 230 for communicating with the gastric tube 100 and together with the gastric tube 100 forming a fluid outflow channel from the stomach into the container 200. When the container 200 is communicated with the gastric tube 100 through the first tube 230, negative pressure is generated inside the container 200 by controlling the operation of the external suction device, and the stomach contents are flowed from the stomach into the container 200 through the fluid outflow channel based on the negative pressure to replenish the air volume withdrawn by the suction device. After the stomach contents flow to the first end 210, they fall at the first end 210 of the container 200 to the second end 220 of the container 200 based on the weight of the contents and accumulate at the second end 220. Preferably, the inside of the container 200 may be embodied to be pre-filled with sterile air. Preferably, the inside of the container 200 is previously set to a negative pressure state. The volume of the container 200 is set to be slightly larger than the stomach volume of a normal human body, so that in an extreme case, for example, when the volume of the stomach contents of a patient is abnormally increased and at least N mL of the stomach contents need to be extracted to ensure that the content in the stomach is in a safe amount that is probably not mistakenly inhaled, the container 200 can completely contain the extracted N mL of the contents without the contents entering the first tube 230 at the first end 210 of the container 200, or even entering the suction device through the first tube 230 to cause the pollution or damage of the suction device. Preferably, the container 200 can be provided in a variety of sizes to accommodate different user uses. For example, the container 200 may be provided in a plurality of sizes, 2000mL, 1500mL, 1000mL and 500mL, to accommodate different populations or usage scenarios, respectively. For example, a container 200 having a capacity of 1500mL is used for adults and a container 200 having a capacity of 500mL is used for infants, thereby saving resources and reducing waste. Preferably, container 200 is provided in the form of an inverted cone with a decreasing bore from first end 210 to second end 220, so that the stomach contents collected at second end 220 can be collected together in small quantities, and the liquid level at which input 310 of reflux pump 300 can be submerged is established at second end 220 where container 200 is closer to the ground. Preferably, the container 200 is colorless and transparent, and marked scale marks are arranged at positions corresponding to the corresponding volumes, so as to measure the amount of contents in the container, and facilitate medical staff to observe the color, the nature and the amount of contents in the stomach, so as to assist doctors to adjust treatment means in time. For example, when the color of the stomach contents is dark green, it indicates that bile is mixed in the contents, and the contents are in a normal stomach contents color; when the color of the gastric contents is red, indicating that a fresh bleeding point exists in the stomach, considering whether the stomach is damaged due to overlarge suction pressure, the suction pressure needs to be adjusted for further diagnosis; when the color of the gastric contents is coffee, the old bleeding point in the stomach is indicated, whether hidden lesions exist in the stomach or not needs to be considered, the timely diagnosis and treatment need to be carried out, whether the nutrition support mode needs to be changed or not needs to be considered, and the supply of the enteral nutrition liquid is changed.

According to a preferred embodiment, a reflux pump 300 is provided on the container 200, the reflux pump 300 having an input 310 for drawing fluid and an output 320 for delivering fluid. Reflux pump 300 is used to return the contents accumulated in container 200 at a set rate through gastric tube 100 into the stomach. The input 310 of the reflux pump 300 is positioned within the second end 220 of the container 200 near the ground such that the input 310 of the reflux pump 300 is below the level of the contents accumulated at the second end 220 of the container 200, and particularly in the case where the amount of the contents accumulated at the second end 220 of the container 200 is small, the reflux pump 300 can sufficiently reflux the remaining contents into the gastric tube 100. The output end 320 of the reflux pump 300 is provided with a second tube 330 connected to the gastric tube 100, preferably the second tube 330 of the reflux pump 300 is connected to the container 200 and coaxially arranged within the first tube 230 of the first end 210 of the container 200, together constituting a double lumen tube 400 connected to the container 200. Preferably, the second tube 330 penetrates into the inner cavity of the container 200 from the outside and is hermetically connected to the container 200. Preferably, the second pipe 330 is connected with the inner wall of the container 200 from the inside of the container 200. The second tube 330 of the reflux pump 300 is communicated with the gastric tube 100 to form a fluid inflow channel. The dual lumen tube 400 includes a fluid outflow channel and a fluid inflow channel. The fluid outflow passageway is composed of the lumen of the gastric tube 100 and the passageway formed by the inner wall of the first tube 230 and the outer wall of the second tube 330. The fluid inflow passageway is comprised of the lumen of gastric tube 100 and the lumen of second tube 330. The contents of the container 200 are returned to the stomach from the container 200 through the fluid inflow channel by the reflux pump 300. Preferably, the input of the reflux pump 300 comprises at least two branches provided with sealing valves. A first branch of the input is inserted into the second end 220 of the container 200 and a second branch of the input is in communication with the external nutrient solution container. When the pumped stomach contents need to be infused back, the valve of the first branch is controlled to be opened, and the valve of the second branch is controlled to be closed; when fresh nutrient solution needs to be input, the valve of the second branch is controlled to be opened, and the valve of the first branch is controlled to be closed. The second branch can also be used for the infusion of some nutritional liquids with therapeutic effects on the indications. For example, a nutritional liquid with a low lactose content or a nutritional liquid containing antibiotics. Preferably, the section of the second tube 330 for delivering the stomach contents based on the action of the reflux pump 300 inside the first tube 230 is circumferentially provided with a first balloon 331 on the outer wall, the first balloon 331 can be inflated under the condition of inflating gas, and the inflated first balloon 331 can be in contact with the inside of the first tube 230, so that the fluid outflow passage formed by the stomach tube 100 and the inner wall of the first tube 230 and the outer wall of the second tube 330 is blocked. When the condition of the patient requires the contents in the stomach to be pumped out into the container 200 for storage, the first balloon 331 is controlled to be deflated so as to open the fluid outflow channel, so that the contents in the stomach can be sequentially fed into the container 200 along the stomach tube 100 and the first tube 230 based on the negative pressure generated inside the container 200 by the suction of the suction device; when the patient's condition requires re-introduction of the stomach contents stored in the container 200 into the stomach, the first balloon 331 is controlled to inflate so that the fluid outflow channel is closed, so that the stomach contents pumped into the second tube 330 from the first end 210 of the container 200 via the reflux pump 300 are not accidentally returned into the container 200 again via the fluid outflow channel while entering the stomach via the fluid inflow channel. It is preferable that inner walls of the first and second tubes are provided with flow rate detection means for detecting a flow rate of the liquid so as to detect flow rate data.

According to a preferred embodiment, the section of the second tube 330 at the output end of the reflux pump 330 not disposed in the container is wound in a spiral shape, a heating sleeve is disposed outside the spiral shape, a heating device is disposed in the heating sleeve, and the spiral second tube 330 is heated by controlling the heating device, so that the temperature of the nutrient solution infused back to the stomach of the patient can be regulated, the substance of the nutrient solution can be more adaptive to the temperature in the body of the patient, and the stimulation of the infused nutrient solution to the stomach of the patient can be reduced.

According to a preferred embodiment, a reflux pump 300 is provided inside the container 200, operating inside the container 200 to re-deliver the nutrient solution to the stomach of the patient. Preferably, reflux pump 300 is located outside container 200, where work is done to re-introduce the nutrient solution into the patient's stomach. Preferably, the reflux pump 300 is disposed outside the container 200, and the second pipe 330 of the reflux pump 300 is disposed outside the container 200 and is disposed at the first end 210 of the container 200 through an outer wall of the container 200. The second tube 330 is connected to the outer wall of the container 200 and is disposed within the first tube 230. Preferably, the reflux pump 300 is controlled by a pump actuator. The pump actuator and the return pump 300 are electrically connected for control. Preferably, the pump actuator and the return pump 300 are connected or magnetically coupled. Preferably, the reflux pump 300 includes at least an impeller. Preferably, when the pump actuator and the reflux pump 300 are magnetically connected, the pump actuator is provided with a first magnetic member, the reflux pump 300 is provided with a second magnetic member, the first magnetic member and the second magnetic member are coupled to each other, and when the first magnetic member rotates, the second magnetic member can follow the first magnetic member to rotate based on the magnetic coupling. Preferably, the second magnetic member is an impeller, so that when the second magnetic member rotates, the stomach content in the container 200 can be driven to move along the action direction of the pump, that is, the stomach content in the container 200 enters the reflux pump 300 along the input end 310 of the reflux pump 300 under the action of the impeller, and flows out from the output end 320 of the reflux pump 300, flows into the liquid inflow channel, and enters the stomach of the patient again. The magnetic coupling mode enables accessories such as wires and the like not to penetrate through the outer wall of the container 200 and be connected with the reflux pump 300 arranged in the container 200, so that the water leakage prevention operation of the container 200 is not needed, the cost is saved, and the leakage of the contents can be prevented. By controlling the power and operating mode of the pump actuator, the reflux flow rate of the fluid can be varied to accommodate different modes of gastrointestinal care and different people needs.

According to a preferred embodiment, the double lumen tube 400, which is connected at one end to the first end 210 of the container 200, is connected to the gastric tube 100 by a first connector 110 opposite the other end of the container 200. Stomach tube 100 sets up the one end pernasal vestibule entering nasal cavity in the stomach, inserts the inferior nasal passage afterwards, guides nasopharynx department through the inferior nasal passage, reaches epiglottis cartilage through nasopharynx department afterwards, is swallow the action control epiglottis cartilage by the patient and guides stomach tube 100 to go up in the esophagus and then get into the esophagus down, gets into in the stomach afterwards. The end of the gastric tube 100 not inserted into the stomach is connected with an external nutrient solution supply device or a suction device, so that when the nutrient solution supply device inputs nutrient solution to the end of the gastric tube 100 not inserted into the stomach, the nutrient solution can gradually enter the stomach of the patient through the nose and the mouth at the speed controlled by the nutrient solution supply device along the gastric tube 100, and does not need to enter the stomach through the normal esophagus of the patient, so as to adapt to the situation that some patients who are difficult to eat or have poor digestion function keep normal nutrient intake. A second connector 410 is provided on the gastric tube 100 for mating connection with the first connector 110. Preferably, the second connecting member 410 is provided with a flared opening in a shape of a horn, and the narrower end of the flared opening is inserted into the catheter with uniform thickness and fixedly connected with the catheter by means of threads or welding, so as to avoid air leakage and even slipping at the connecting position of the gastric tube 100 and the first connecting member 110, which may affect the nutrient solution delivery and suction during the fluid delivery and suction. The flared wider end of the "trumpet" of the first connector 110 is used to connect with the second connector 410. Preferably, the second connector 410 is provided as a stepped connector that is inserted into the "trumpet" flare of the first connector 110 to be connected with the first connector 110.

The nutrient solution is conveyed by the reflux pump 300, and the nutrient solution tends to push the gastric tube 100 to a direction far away from the container 200 based on the flowing of the substance in the gastric tube 100; and in the process of extracting the stomach content by the negative pressure generated by the negative pressure device, the trend of approaching the stomach tube 100 to the suction device is generated by the driving of the flowing of the substance in the stomach tube 100, and the frequent and regular direction alternate movement can lead the connection of the first connecting piece 110 and the second connecting piece 410 to be easy to loosen, thereby causing the problem of air leakage or liquid leakage, and therefore, the stable connection of the first connecting piece 110 and the second connecting piece 410 is required.

According to a preferred embodiment, the second connecting element comprises a plurality of coaxial stepped sections. Preferably, the number of segments is 3, and the diameters of the segments decrease sequentially from the distal end to the proximal end of the second connector, namely, the first segment, the second segment and the third segment. The proximal end is the end near the patient and the distal end is the end away from the patient. The nutrient solution input channel is arranged at the central axis of the second connecting piece. Preferably, the length of the third section is about twice the sum of the lengths of the first and second sections. Preferably, the third section is provided with a rotary clamping structure, and the rotary clamping structure can be tightly and stably connected with the first connecting piece. The first connecting piece and the second connecting piece are prevented from being easily separated when being connected conveniently, and pulling is prevented to a certain extent. Preferably, a rotary clamping area matched with the third section in shape is arranged in the first connecting piece. Preferably, the first and second sections of the second connector are in contact connection with at least the "flared" inner wall of the first connector. Preferably, the rotational snap-in structure of the second part of the third section may be, for example, a thread, a snap groove, or the like. Preferably, the force condensation and form-fitting connection can help the material to resist ageing, since fatigue and wear of the material occur over a longer period of time.

According to a preferred embodiment, the edges of the first and

second sections

411, 412 of the second connector 410 that are in contact with the inner wall of the flared opening are provided with a ring of suction annular cups made of flexible material, the central portion of the outer convex portion of which is connected to the edges, the opening of which is bent towards the inner wall of the "trumpet" of the first connector 110. When the ends of the first and

second sections

411 and 412 are brought into contact with the inner wall of the "flared connecting port 240, due to the pressure, the inner curved surface of the annular sucker is contacted with the inner wall of the flared opening of the trumpet shape and is gradually and completely contacted with the inner wall along with the increase of the extrusion force, because the air in the inner curved surface of the annular sucking disc is extruded out by the extrusion, the inner curved surface of the annular sucking disc and the inner wall of the connecting port 240 form a vacuum environment, at the moment, because of the existence of the atmospheric pressure, the inner walls of the sucking disc and the connecting port 240 are pressed more tightly, so that the first and

second sections

411 and 412 of the second connector 410 do not easily disconnect from the "flared" flare of the first connector 110, so that the first and

second connectors

110 and 410 are not displaced relative to each other under the influence of the tendency of regularly alternating, opposite directions to each other.

Preferably, the first and second connecting members are connected by a screw thread, the first portion of the third section of the second connecting member is provided with an external screw thread, the portion of the first connecting member which is engaged with the first portion is provided with an internal screw thread, and the internal and external screw threads are matched with each other to connect the first and second connecting members.

According to a preferred embodiment, the second connector 410 is provided at a central axis thereof with a nutrient solution feeding passage, an end of the first tube 230 connected to the reflux pump 300 opposite to the reflux pump 300 is communicated with the nutrient solution feeding passage, and an inner diameter of the first tube 230 is equal to an inner diameter of the nutrient solution feeding passage and is smaller than an inner diameter of the gastric tube 100. Preferably, the first tube 230 for inducing diversion of stomach contents into the container 200 during the process of inducing stomach contents is connected with the outer wall of the third section 414 of the second connector 410 in a manner of integral forming or fixedly connecting. Preferably, the first section 411 and the second section 412 are provided with a plurality of through holes 413 parallel to the central axis, and when the stomach content is sucked, the stomach content enters the flow channel formed by the outer wall of the first tube 230 and the inner wall of the second tube 330 through the plurality of through holes 413, and then enters the container 200. Preferably, a one-way valve is provided in the second tube 330, the one-way valve being arranged to allow a flow of liquid from inside the container 200 towards inside the gastric tube 100 and to prevent the contents inside the gastric tube 100 from flowing towards inside the container 200, in order to avoid that, in case of aspiration of the stomach contents, the stomach contents flow from the second tube 330 into the reflux pump 300, affecting the measurement of the amount of contents and affecting the operation of the reflux pump 300. Preferably, a one-way valve is provided at the end of the second tube 330 proximal to the gastric tube 100. Preferably, the inner diameter of the first tube 230 is equal to the inner diameter of the gastric tube 100, so as to create sufficient negative pressure to attract gastric contents.

In use, gastric tube 100 is inserted into the patient's stomach through one end of the patient's esophagus and the other end is held within the patient's nasal cavity, and gastric tube 100 and dual lumen tube 400 can be connected outside the patient's body using first connector 110 and second connector 410, and container 200 is hung beside the bed such that container 200 is held upright and second end 220 of container 200 is close to the ground while first end 210 is away from the ground, and gastric content delivery and aspiration can be performed by controlling the reflux pump 300 actuator and the negative pressure device external to container 200. The flow of the nutrient solution in the pipeline can be controlled by controlling the operation modes of the reflux pump 300 and the negative pressure device.

Example 2

This example is a further addition to and improvement of example 1.

The embodiment provides a circulating system capable of detecting nutrient components, and the system comprises a detection module, an analysis module, a control module and a working module. The detection module is used for detecting indexes and parameters of the stomach and contents in the stomach of the patient and transmitting the detected information to the analysis module, and the analysis module analyzes the indexes and the parameters and then sends control signals to the working module through the control module so as to control the working module to enter different working modes according to the analysis of the contents in the stomach and adapt to patients with different diseases and different nursing processes. The detection module includes a component analyzer disposed in the container 200, and the component analyzer is disposed at a first end 210 of the container 200 near the floor and is capable of detecting components in the contents stored in the container 200. The analysis module judges whether the gastric contents in the container 200 need to be returned or not by detecting the nutrient components and the PH of the gastric contents and sending the detected data to the analysis module, and the analysis module judges the content of the nutrient components and the content of gastric acid contained in the gastric contents in the container 200 through analysis. And controls how much flow rate to return based on the concentration of stomach contents and the concentration of gastric acid. The working module includes a negative pressure generating device and a reflux pump 300. The control module controls the return speed of the nutrient solution by controlling the negative pressure generating device and the actuator of the return pump 300. The detection range of the nutrient analysis module may be, for example: saccharide concentration analysis, protein concentration analysis, PH detection analysis, inorganic salt concentration detection analysis to determine if reinfusion is required and the rate and cumulative amount of reinfusion and aspiration based on the current state.

In the using process, the control module firstly controls the second branch of the starting input end of the reflux pump to convey preset nutrient solution components according to a preset program, and controls the display module to display the type, the real-time flow rate, the average flow rate and the accumulated input amount of the input nutrient solution according to the detection data of the flow rate detection device arranged in the second pipe. And after the nutrient solution T1 is input, controlling the negative pressure generating device to suck nutrient substances in the stomach through the stomach tube, and stopping sucking when the flow rate detecting device detects that only intermittent fluid flow exists in the tube. The control module controls the display module to display the actual extraction flow rate, the average extraction flow rate and the accumulated extraction amount based on the detection data of the flow rate detection device, and the control module performs component analysis on the extracted stomach contents according to a component analyzer in the container and controls the display module to display component analysis results such as protein content, PH, carbohydrate content, inorganic ion content and the like. The control module calculates the digestion condition of the patient on various nutrients based on the content analysis of the nutrients, and calculates the amount of the nutrients and the total energy cumulatively absorbed by the patient by combining the total amount of the input nutrients so as to analyze the digestion capacity and the metabolic level of the patient. The control module adjusts the speed and amount of the input nutrient solution in the preset program, and even the formula of the nutrient solution, according to the calculated digestive capacity and metabolic level changes to ensure that the nutrient absorption of the patient is ensured under the condition of causing minimum pressure on the digestive system of the patient.

According to a preferred embodiment, the control module determines the metabolic level of the patient in combination with a measurement of a physiological parameter of the patient, such as blood glucose level, which data characterizes the vital state of the patient and the amount of nutrients ingested by the patient. When the metabolic level of the patient is calculated to be lower than the average metabolic level, the control module controls the reflux pump to input the amount of nutrient substances slightly larger than the metabolic level of the patient during the next feedback after a certain period, controls the negative pressure generating device to suck back the gastric contents again after the T1 input time, calculates the absorption energy according to the data analyzed by the component analyzer, confirms the amount of the nutrient substances absorbed by the patient and calculates the metabolic level of the patient again. On the basis of the multiple repetitions, the average metabolic level and the average energy required daily for the patient are confirmed and displayed by the display means.

According to a preferred embodiment, after a quantitative nutrient solution is input by the control module based on a preset program, the gastric content is extracted after T1 time, the average digestion capacity of the patient for each nutrient substance in T1 time is confirmed according to the amount of the extracted gastric content, the absorption proportion of the patient is calculated, and the nutrition absorption preference of the patient is confirmed. In the case that a patient has obvious nutrition absorption preference, for example, the absorption rate of protein nutrients is high, and the absorption rate of nutrients such as lactose is low, the content of the protein nutrients in the nutrient solution is increased based on scientific mixture ratio, and lactose is replaced by the rest nutrients, for example, galactose, so as to adapt to the digestion and absorption capacity of the patient and improve the formula of the nutrient solution. And based on the respective average digestive abilities of the patients, the control module calculates the digestive abilities adaptive to the patients based on the existing nutrient solution formula, does not cause the infusion flow rate of a large amount of residual nutrient solution in the stomach of the patients, and controls the reflux pump to carry out the next reflux at the speed. By repeating the compositional analysis of the incoming nutrient solution and the withdrawn gastric contents several times, the procedure is gradually modified to form a reinfusion regime that places minimal burden on the patient.

Meanwhile, a large number of analysis results can be finally used for integrated analysis of the digestive ability of the whole patient, so that rules are found, and scientific research development is promoted.

According to a preferred embodiment, the control device confirms the contents of the nutrient components and the digestive juice in the extracted contents based on the analysis of the composition of the extracted stomach contents, and judges whether to reinfuse the contents, at what flow rate to reinfuse and the total amount to be reinfused based on a preset threshold value. When the return is needed, a first branch of the return pump connected to the interior of the container is controlled to be opened and a second branch is controlled to be closed so as to return the contents pumped out of the container to the patient. Preferably, the feedback adjusting step in this embodiment is configured as follows:

when the detection module detects that the concentration of the essential nutrient in the contents stored in the container 200 is above a first threshold, the first threshold is one-half of the nutrient of the type originally in the formula. And is less than the amount of the nutrient of the type that should be absorbed according to the daily nutrient intake criteria after subtracting the first threshold from the amount of the nutrient originally in the formula. The control module controls the reflux pump 300 actuator to operate in a preset first program. The first procedure is: the feedback is initiated at a first speed and gradually increased over a first time period to maintain the feedback at a second speed after the feedback at the second speed. Preferably, the first speed is 1/3-2/3 of the input speed in the preset program. The second speed is an input speed increase of 20-30 mL/h.

When the detection module detects that the concentration of a nutrient component of the contents accumulated in the container 200 is above a second threshold, the second threshold is one third of the nutrient content originally in the formula. And less than the amount of the nutrient of the type that should be absorbed according to the daily nutrient intake criteria as a result of subtracting the first threshold from the amount of the nutrient present in the formulation. The control module controls the reflux pump 300 actuator to operate in a preset second program. The second procedure is: and starting to feed back at the third speed, gradually increasing to feed back at the fourth speed in the first time, and keeping the feed back at the fourth speed. Preferably, the third speed is 1/2-5/6 of the input speed in the preset program. The fourth speed is the third speed increased by 20-30 mL/h.

Preferably, the first threshold may be, for example, a whole protein (non-hydrolyzed protein) content of about 10g/1000mL, and the second threshold may be, for example, a whole protein (non-hydrolyzed protein) content of about 20g/1000 mL. Preferably, the first speed may be, for example, 40-60mL/h, the first time may be, for example, 0.5-2h, and the second speed may be, for example, 100-150 mL/h. The third speed may be, for example, 20-50mL/h, and the fourth speed may be, for example, 60-80 mL/h.

According to a preferred embodiment, the system further comprises a display module, which is in data connection with the analysis module. The display module is used for displaying the data which is detected and sent by the analysis module in real time, such as PH, carbohydrate content, protein content, inorganic salt content, in-tube flow rate of return infusion and suction and accumulated fluid volume of suction and return. So that medical staff can know the current condition of the patient through the display module to carry out auxiliary diagnosis.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents. The present description contains several inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", each indicating that the respective paragraph discloses a separate concept, the applicant reserves the right to submit divisional applications according to each inventive concept. Whilst the features referred to as being "preferably" are referred to throughout as optional, it should not be understood that such reference is to be taken as an admission that the applicant reserves the right to disclaim or delete the associated preferred feature at any time.

Claims

1. A circulation system capable of detecting the composition of a nutrient solution, sucking the residual contents in the stomach into an external container (200) for storage and re-infusing the contents back to the stomach or remaining in the container (200) based on the composition of the contents stored in the container (200), characterized in that,

at least comprises a detection module arranged in the container (200), an analysis module used for analyzing detection data, a control module used for sending a control signal based on the data analyzed by the analysis module, and a working module used for receiving the control signal of the control module and changing the working state based on the control signal,

the detection module is used for detecting indexes and parameters of the stomach and contents in the stomach of the patient and transmitting the detected information to the analysis module, the analysis module analyzes the indexes and the parameters and then sends data to the control module, and the control module controls the working module to enter different working modes according to the analysis data of the stomach and the contents in the stomach.

2. The circulation system of claim 1, wherein the circulation system operates as follows:

when the detection module detects that the concentration of the nutrient content of the content accumulated in the container (200) is higher than a first threshold value, the control module controls the actuator of the reflux pump (300) to work according to a preset first program; the first program is: starting to return at a first speed, gradually increasing to return at a second speed within a first time, and then keeping the return at the second speed;

when the detection module detects that the concentration of the nutrient content of the content accumulated in the container (200) is higher than a second threshold value, the control module controls the actuator of the reflux pump (300) to work in a preset second program; the second procedure is: and starting to feed back at the third speed, gradually increasing to feed back at the fourth speed in the first time, and keeping the feed back at the fourth speed.

3. The circulatory system of claim 1 or 2, wherein the detection module comprises a component analyzer disposed at a first end (210) of the container (200) near the ground, the component analyzer being capable of detecting the nutritional components and PH of the stomach contents in the container (200) and sending detection data to the analysis module, the analysis module analyzing and determining how much each nutritional component and gastric acid content in the stomach contents generates an analysis result based on the detection data of the component analyzer, the control module determining whether the stomach contents have a return value based on the analysis result and sending a control signal to the operational module.

4. A nutrient solution circulation device is characterized by at least comprising a stomach tube (100) which constructs a nutrient channel from the outside to the stomach of a user through the esophagus, a container (200) which is connected with the stomach tube (100) and can generate negative pressure to pump out the stomach content and store the stomach content in the self interior so as to prevent the stomach content from entering the lung without being controlled by the patient and causing lung infection, and a reflux pump (300) at least of which an input end (310) is arranged in the container (200) and can convey the stomach content in the container (200) to the stomach of the patient again through the stomach tube (100).

5. The circulation device according to claim 4, characterized in that, in the normal operating condition, the container (200) has a first end (210) far away from the ground and a second end (220) close to the ground, the first end (210) of the container (200) is provided with a connection port (240) for connecting with an external negative pressure generating device and a first tube (230) for connecting with an end of the gastric tube (100) not arranged in the stomach,

in case the container (200) internally generates a negative pressure upon operation of the connected external negative pressure generating device, the stomach contents are dropped from the stomach via the stomach tube (100) and the first tube (230) into the second end (220) of the container upon gravity based on the negative pressure.

6. The circulatory device according to any one of claims 4 to 5, wherein said first tube (230) has an inner diameter equal to the inner diameter of said gastric tube (100) in such a way as to provide a negative pressure of sufficient magnitude into the gastric tube to facilitate aspiration of gastric contents.

7. The circulation device according to any one of claims 4 to 6, wherein the reflux pump (300) comprises an input end (310) for sucking in the fluid and an output end (320) for outputting the fluid, and the input end (310) of the reflux pump (300) is arranged at the second end (220) of the container (200) in a manner that the content in the container (200) can be sufficiently refluxed.

8. The circulation device according to any one of claims 4 to 7, characterized in that the output (320) of the reflux pump (300) is provided with a second tube (330) in such a way that the gastric contents in the container (200) can be re-fed back into the stomach through the gastric tube (100), and that one end of the second tube (330) close to the gastric tube (100) is arranged coaxially with the first tube (230) and inside the first tube (230).

9. The circulatory device according to any one of claims 5 to 8, wherein said first tube (230) and said second tube (330) constitute a double lumen tube (400), said double lumen tube (400) being connected to said gastric tube (100) by a first connector (110) and a second connector (410) in such a way as to enable changing the suction and delivery state of said circulatory device without altering the connection of the equipment.

10. The circulation device according to any one of claims 5 to 9, wherein the first connection member (110) and the second connection member (410) are connected by means of a ring-shaped suction cup provided at an end edge of the second connection member (410) in a manner capable of adapting to a frequently changing flow direction of the fluid in the pipe.