Enteral nutrition heating assembly and control system thereof

Abstract

The invention relates to a heating enteral nutrition assembly and a control system thereof. The heating enteral nutrition assembly comprises a nutrition bag, a conveying pipe and a connecting device for communicating the nutrition bag with the conveying pipe, and a heating device and a detection adjusting device are fixed on the conveying pipe; the heating device is used for heating the nutrient solution flowing through the conveying pipe; the detecting and adjusting assembly is used for detecting the indoor temperature and the temperature of the nutrient solution flowing through the conveying pipe before and after heating, and detecting and adjusting the flow velocity of the nutrient solution in the conveying pipe; the heating device and the detection adjusting assembly are electrically connected with the control module. The control system of the enteral nutrition heating assembly comprises a control module used for adjusting the flow of the nutrient solution flowing through the conveying pipe; the heating power of the heating device is determined based on the data information when the nutrient solution is conveyed. The enteral nutrition heating assembly can be conveniently disassembled and installed on another enteral nutrition heating assembly, the heating temperature can be accurately controlled, and a nutrient solution can be conveyed at regular time.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a warming enteral nutrition component and a control system thereof. Background Art

[0002] In clinical practice, elderly patients with medical conditions or swallowing disorders often need to receive continuous enteral nutrition infusion through a gastrointestinal tube. However, diarrhea becomes one of the main complications when such patients receive enteral nutrition. According to the recommendations of the ESPEN Nutrition Guidelines for Critically Ill Patients 2023, for elderly patients with diarrhea, the temperature of the enteral nutrition solution should be strictly controlled within the range of 38-42°C.

[0003] At present, the commonly used warming method in clinical practice is to attach a warming device to the outside of the nutrient bag or delivery tube. However, these devices are often inconvenient to disassemble, cannot accurately control the temperature, and cannot be timed. This increases the working time of medical staff and increases the risk of burns or low-temperature stimulation for patients.

[0004] For example, a Chinese patent document (application publication number CN221490787U, application date 2023-10-15) discloses an enteral nutrition warming device, including a barrel, the top of the barrel is rotatably connected to a first rotating block, the interior of the first rotating block is fixedly connected to an infusion tube, the bottom of the infusion tube is fixedly connected to a sealing ring, the top of the barrel is fixedly connected to a flow regulating bin, the bottom of the flow regulating bin is fixedly connected to an infusion tube, the bottom of the barrel is fixedly connected to a battery block, and the bottom of the barrel is rotatably connected to a second rotating block. The enteral nutrition warming device is provided with a first rotating block, an infusion tube, a sealing ring, a flow regulating bin, and a barrel. When in use, one hand holds the barrel and the other hand rotates the first rotating block. A card slot is provided inside the first rotating block and the barrel, so that the infusion tube and the sealing ring can be aligned with an interface of the flow regulating bin. Pipes of different calibers are provided inside the flow regulating bin, thereby achieving the effect of accurately controlling the flow rate. However, the enteral nutrition heating device is complicated to operate to change the temperature and flow rate, and is inconvenient to disassemble and install on another heating enteral nutrition component after use, and the timing function cannot be realized.

[0005] Therefore, providing a heated enteral nutrition component and a control system thereof, which can be easily disassembled and installed on another heated enteral nutrition component, can accurately control the heating temperature and time the delivery of the nutrient solution is a technical problem that urgently needs to be solved in the art. Summary of the invention

[0006] In view of this, the present invention provides a heated enteral nutrition component and a control system thereof, which can be easily disassembled and installed on another heated enteral nutrition component, and can accurately control the heating temperature and deliver the nutrient solution on a regular basis.

[0007] The present application provides a heated enteral nutrition component, comprising a nutrient bag, a delivery tube and a connecting device connecting the nutrient bag and the delivery tube, wherein a heating device and a detection and adjustment device are fixed on the delivery tube; the heating device is used to heat the nutrient solution flowing through the delivery tube; the detection and adjustment component is used to detect the indoor temperature, the temperature of the nutrient solution flowing through the delivery tube before and after heating, and the temperature of the heating device, and is used to detect and adjust the flow rate of the nutrient solution flowing through the delivery tube; the heating device and the detection and adjustment component are electrically connected to a control module.

[0008] Optionally, the connecting device includes an inlet adapted to the output end of the nutrient bag and an outlet adapted to the input end of the delivery tube.

[0009] Optionally, the heating device includes a first body and a second body hinged to the first body, and a plurality of heat-conducting wires are circumferentially spaced in the first body and the second body; the first body and the second body are wrapped around the delivery tube to heat the nutrient solution flowing through the delivery tube; a first connecting part is connected to the first body, and a second connecting part is connected to the second body, connecting grooves are spaced apart on the first connecting part, and connecting protrusions are spaced apart on the second connecting part, and the connecting grooves are matched with the connecting grooves; a heat-conducting layer is connected to the inner sides of the first body and the second body; and a thermal insulation layer is connected to the outer sides of the first body and the second body.

[0010] Optionally, the detection and adjustment component includes an indoor temperature detection device, a first temperature detection device, a second temperature detection device, a third temperature detection device and a flow rate detection control device; the indoor temperature detection device is used to detect the room temperature; the first temperature detection device is used to detect the normal temperature of the nutrient solution flowing through the delivery pipe without heating; the second temperature detection device is used to detect the heated temperature of the nutrient solution flowing through the delivery pipe after being heated by the heating device; the third temperature detection device is used to detect the temperature of the heating device; and the flow rate detection control device is used to detect and control the flow rate of the nutrient solution flowing through the delivery pipe.

[0011] Optionally, it also includes a user terminal, which is connected to the heating device and the control module, and is connected to a fixing device; the user terminal is used to input, output and display data information of the heated enteral nutrition component.

[0012] The present application also provides a control system for a heated enteral nutrition assembly, comprising: a nutrition bag, a delivery tube, and a connecting device connecting the nutrition bag and the delivery tube, wherein a heating device and a detection and adjustment device are fixed on the delivery tube; Also included: a monitoring module for obtaining data information of the warming enteral nutrition component; A control module, used for adjusting the flow rate of the nutrient solution flowing through the delivery pipe; used for determining the heating power of the heating device when delivering the nutrient solution based on the data information; and used for timing the delivery of the nutrient solution; A user terminal, used for inputting, outputting and displaying the data information, and for issuing reminder information; The control module is electrically connected to the monitoring module and the user terminal.

[0013] Optionally, the data information includes the type of enteral nutrition agent, the flow rate V of the nutrient solution, the wall thickness d of the delivery tube, the thermal conductivity k of the delivery tube, the length L of the heating device, the room temperature , room temperature of nutrient solution , Heating temperature of nutrient solution , the temperature of the heating device , the heating power P of the heating device and the nutrient solution temperature required by the patient .

[0014] Optionally, the control module is used to determine the heating power of the heating device based on the data information and the flow rate of the nutrient solution, including: Based on room temperature Or the room temperature of the nutrient solution The temperature of the nutrient solution required by the patient determining whether to start the heating device to heat the nutrient solution flowing through the delivery pipe; After determining to start the heating device to heat the nutrient solution flowing through the delivery tube: determining the type of the enteral nutrient agent, and determining the density ρ, specific heat capacity c and flow rate V of the nutrient solution based on the type of the enteral nutrient agent; Determine the patient's required nutrient solution temperature , based on the patient's required nutrient solution temperature Determine the heating temperature of the nutrient solution ; Based on the normal temperature of the nutrient solution , Heating temperature of nutrient solution Determine the temperature difference of the nutrient solution ; Determine the time t for a unit volume of nutrient solution A to flow through the heating device based on the length L of the heating device and the flow rate V of the nutrient solution; Based on the density ρ, specific heat c, flow rate V, temperature difference of the nutrient solution The heating power P of the heating device is determined by the time t that a unit volume of nutrient solution A flows through the heating device.

[0015] Optionally, the control module is used to determine the heating power of the heating device based on the data information and the flow rate of the nutrient solution, and further includes: based on the heating temperature of the nutrient solution and the temperature of the heating device The heating power P of the heating device is corrected based on the relationship between and the temperature of the heating device The relationship between determines the heat loss Q; Based on the heat loss Q, the heating power P of the heating device is corrected.

[0016] Optionally, the control module is used to time the delivery of the nutrient solution, including: controlling the detection and adjustment device to stop delivering the nutrient solution after the nutrient solution delivery time reaches a preset delivery time; controlling the detection and adjustment device to start delivering the nutrient solution when the time to stop delivering the nutrient solution reaches a preset interval, and controlling the detection and adjustment device to stop delivering the nutrient solution after the nutrient solution delivery time reaches the preset delivery time; The control module is also used to record the flow rate of the nutrient solution and the time of delivering the nutrient solution, determine the amount of the nutrient solution based on the flow rate of the nutrient solution and the time of delivering the nutrient solution, and output a prompt message when the recorded amount of nutrient solution is equal to the total amount of nutrient solution placed in the nutrient bag; the user terminal is used to issue a reminder message.

[0017] Compared with the prior art, the present invention provides at least the following beneficial effects: The heated enteral nutrition component provided by the present invention has a connecting device that connects the nutrient bag and the delivery tube, thereby realizing convenient connection and separation of the nutrient bag and the delivery tube; the heating device heats the nutrient solution flowing through the delivery tube at different temperatures as needed; the heating device is designed as a detachable connection structure, which is convenient for removing and installing the heating device on another heated enteral nutrition component, and can be reused. The control system of the heated enteral nutrition component provided by the present invention includes a control module, which is used to adjust the flow rate of the nutrient solution flowing through the delivery tube; is used to determine the heating power of the heating device when delivering the nutrient solution based on the data information; is used to time the delivery of the nutrient solution; and realizes precise control of the heating temperature and timed delivery of the nutrient solution.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0019] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0021] Figure 1 is a schematic structural diagram of a heated enteral nutrition assembly provided by the present invention; Figure 2 It is a structural schematic diagram of the connection device provided by the present invention; Figure 3 It is a structural schematic diagram of the heating device provided by the present invention; Figure 4 is a structural schematic diagram of a first body provided by the present invention; Figure 5 is a structural schematic diagram of a second body provided by the present invention; Figure 6 is a cross-sectional view of another heating device provided by the present invention; Figure 7 is a schematic diagram of a control system of a heated enteral nutrition assembly provided by the present invention; Among them: 10, nutrient bag; 11, output end; 20, delivery pipe; 21, input end; 30, connecting device; 31, inlet; 32, outlet; 40, heating device; 41, first body; 42, second body; 43, heat-conducting wire; 44, first connecting part; 45, second connecting part; 46, connecting groove; 47, connecting protrusion; 48, heat-conducting layer; 49, insulation layer; 50, indoor temperature detection device; 51, first temperature detection device; 52, second temperature detection device; 53, flow rate detection control device; 54, third temperature detection device; 60, user terminal; 61, fixing device; 70, control module. DETAILED DESCRIPTION

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0023] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0024] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0025] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0026] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0027] Embodiment 1 In an alternative embodiment, referring to Figure 1-Figure 5 The heated enteral nutrition assembly provided in this embodiment includes a nutrition bag 10, a delivery tube 20, and a connecting device 30 connecting the nutrition bag 10 and the delivery tube 20. Specifically, the connecting device 30 includes an inlet 31 adapted to the output end 11 of the nutrition bag 10 and an outlet 32 ​​adapted to the input end 21 of the delivery tube 20. A heating device 40 and a detection and adjustment device are fixed on the delivery tube 20; the heating device 40 is used to heat the nutrient solution flowing through the delivery tube 20; the detection and adjustment component is used to detect the indoor temperature, the temperature of the nutrient solution flowing through the delivery tube 20 before and after heating, and the temperature of the heating device 40, and is used to detect and adjust the flow rate of the nutrient solution flowing through the delivery tube 20; the heating device 40 and the detection and adjustment component are electrically connected to the control module 70.

[0028] It is understandable that the categories of enteral nutrition agents include: 1. Macromolecular polymers: ⑴ Homemade homogenate meal: milk, soy milk, fish, meat, vegetables and other foods are ground and added with water, which is "natural food"; ⑵ Macromolecular polymer preparations: containing protein, sugar, fat, vitamins, minerals and water. 2. Elemental diet; 3. Special formula preparations: ⑴ High branched-chain amino acid formula; ⑵ Essential amino acid formula; ⑶ Component formula.

[0029] Different enteral nutrition agents may use different diameters of the delivery tube 20, and there may be a mismatch when the nutrition bag 10 and the delivery tube 20 are directly connected; if the connection device 30 has different specifications, an adapted connection device 30 is selected according to the specifications of the output end 11 of the nutrition bag 10 and the input end 21 of the delivery tube 20, and the nutrition bag 10 and the delivery tube 20 are connected to achieve convenient connection and separation of the nutrition bag 10 and the delivery tube 20. Specifically, the output end 11 of the nutrition bag 10 is threadedly connected to the inlet 31 of the connection device 30, and the input end 21 of the delivery tube 20 is threadedly connected to the outlet 32 ​​of the connection device 30.

[0030] As needed, the control module 70 controls the detection and adjustment component to adjust the flow rate of the nutrient solution flowing through the delivery pipe 20, and the control module 70 controls the heating device 40 to heat the nutrient solution flowing through the delivery pipe 20. The control module 70 adjusts the heating power of the heating device 40 based on the detected indoor temperature and the temperature of the nutrient solution flowing through the delivery pipe 20 before and after heating, so that the nutrient solution heated by the heating device 40 meets the nutrient solution temperature T required by the patient. It should be noted that different patients have different body temperature perceptions, and different patients also require different nutrient solution temperatures T required.

[0031] In order to facilitate the removal and installation of the heating device 40 to another heated enteral nutrition component, the heating device 40 is designed to be a detachable connection structure. Figure 1 , Figure 3-Figure 5The heating device 40 includes a first body 41 and a second body 42 hinged to the first body 41, and a plurality of heat-conducting wires 43 are circumferentially spaced apart in the first body 41 and the second body 42; the first body 41 and the second body 42 are wrapped around the delivery pipe 20 to heat the nutrient solution flowing through the delivery pipe 20; a first connecting portion 44 is connected to the first body 41, and a second connecting portion 45 is connected to the second body 42, connecting grooves 46 are spaced apart on the first connecting portion 44, and connecting protrusions 47 are spaced apart on the second connecting portion 45, and the connecting grooves 46 are matched with the connecting grooves 46; a heat-conducting layer 48 is connected to the inner sides of the first body 41 and the second body 42; a heat-insulating layer 49 is connected to the outer sides of the first body 41 and the second body 42.

[0032] It can be understood that the first body 41 and the second body 42 are opened, the delivery tube 20 is placed in the first body 41, and then the second body 42 is snapped onto the first body 41 (or the delivery tube 20 is placed in the second body 42, and then the first body 41 is snapped onto the second body 42), the first body 41 and the second body 42 are covered on the delivery tube 20, and then the nutrient solution flowing through the delivery tube 20 is heated by the heat conductive wire 43 in the first body 41 and the second body 42.

[0033] In order to facilitate the disassembly of the heating device 40, the first connecting part 44 is connected to the first body 41, and the second connecting part 45 is connected to the second body 42. The detachable connection of the heating device 40 is realized by the detachable connection between the first connecting part 44 and the second connecting part 45. Specifically, connecting grooves 46 are arranged at intervals on the first connecting part 44, and connecting protrusions 47 are arranged at intervals on the second connecting part 45. The connecting grooves 46 and the connecting protrusions 47 are adapted to each other, and there is a minimum interference fit between the connecting grooves 46 and the connecting protrusions 47, so as to improve the connection stability between the connecting grooves 46 and the connecting protrusions 47.

[0034] In order to prevent heat loss, a heat-insulating layer 49 is connected to the outer sides of the first body 41 and the second body 42 to prevent heat from overflowing. The heat-insulating layer 49 is made of heat-insulating and scald-proof materials.

[0035] In order to uniformly heat the nutrient solution flowing through the delivery pipe 20 , a heat-conducting layer 48 is connected to the inner sides of the first body 41 and the second body 42 . The heat-conducting layer 48 can absorb heat and conduct heat uniformly.

[0036] It should be noted that the plurality of heat conducting wires 43 are arranged at intervals in the circumferential direction in order to uniformly heat the nutrient solution in the delivery tube 20. Figure 3-5 As shown, the heat-conducting wires 43 of the same length as the heating device 40 are arranged at intervals along the circumferential direction of the heating device 40. Figure 6, the semi-annular heat-conducting wire 43 with a larger inner diameter than the first body 41 and smaller than the outer diameter of the first body 41 is arranged at intervals along the axial direction of the heating device 40; the semi-annular heat-conducting wire 43 with a larger inner diameter than the second body 42 and smaller than the outer diameter of the second body 42 is arranged at intervals along the axial direction of the heating device 40.

[0037] In an alternative embodiment, referring to Figure 1 The detection and adjustment component includes an indoor temperature detection device 50, a first temperature detection device 51, a second temperature detection device 52, a third temperature detection device 54 and a flow rate detection control device 53; the indoor temperature detection device 50 is used to detect the room temperature; the first temperature detection device 51 is used to detect the normal temperature of the nutrient solution flowing through the delivery pipe 20 without heating; the second temperature detection device 52 is used to detect the heating temperature of the nutrient solution flowing through the delivery pipe 20 after being heated by the heating device 40; the third temperature detection device 54 is used to detect the temperature of the heating device 40; the flow rate detection control device 53 is used to detect and control the flow rate of the nutrient solution flowing through the delivery pipe 20.

[0038] In an alternative embodiment, referring to Figure 1 , and also includes a user terminal 60, which is connected to the heating device 40 and the control module 70, and is connected to a fixing device 61; the user terminal 60 is used to input, output and display data information of the heated enteral nutrition component.

[0039] It can be understood that the user terminal 60 is connected to the heating device 40 and the control module 70, and when the heating device 40 is detachably connected, the detachable connection is also realized accordingly; in order to prevent the user terminal 60, the heating device 40 and the control module 70 from being too heavy and pulling the delivery tube 20 out of shape, a fixing device 61 is connected to the user terminal 60, and the user terminal 60, the heating device 40 and the control module 70 are fixed to a fixed facility such as an infusion stand through the fixing device 61. The user terminal 60 is used to input, output and display data information of the heated enteral nutrition component, and the data information includes the type of enteral nutrition agent, the flow rate V of the nutrient solution, the wall thickness d of the delivery tube 20, the thermal conductivity k of the delivery tube 20, the length L of the heating device 40, the room temperature , room temperature of nutrient solution , Heating temperature of nutrient solution , the temperature of the heating device 40 , the heating power P of the heating device 40 and the nutrient solution temperature required by the patient wait.

[0040] It should be noted that the user terminal 60 may be a display for displaying data information of the heated enteral nutrition component.

[0041] When the heated enteral nutrition assembly is used, the adaptable connecting device 30 is selected according to the specifications of the output end 11 of the nutrition bag 10 and the input end 21 of the delivery tube 20, the nutrition bag 10 and the delivery tube 20 are connected, and the nutrition bag 10 and the delivery tube 20 are conveniently connected and separated. The first body 41 and the second body 42 are opened, the delivery tube 20 is placed in the first body 41, and then the second body 42 is buckled on the first body 41 (or the delivery tube 20 is placed in the second body 42, and then the first body 41 is buckled on the second body 42), the connection grooves 46 arranged at intervals on the first connection part 44 and the connection protrusions 47 arranged at intervals on the second connection part 45 are matched and connected one by one, and the first body 41 and the second body 42 are covered on the delivery tube 20. Then, the heat conductive wire 43 in the first body 41 and the second body 42 is controlled by the control module 70 to heat the nutrient solution flowing through the delivery tube 20. During this period, the detection and adjustment component can be controlled by the control module 70 to adjust the flow rate of the nutrient solution flowing through the delivery tube 20. It should be noted that the delivery pipe 20 is provided with an exhaust device to prevent the liquid in the delivery pipe 20 from being heated and generating bubbles and preventing it from overflowing; a first temperature detection device 51, a second temperature detection device 52 and a flow rate detection control device 53 are provided on the delivery pipe 20.

[0042] Embodiment 2 In an alternative embodiment, referring to Figure 1-Figure 7 The control system of the heated enteral nutrition assembly provided in this embodiment includes: a nutrition bag 10, a delivery tube 20, and a connecting device 30 connecting the nutrition bag 10 and the delivery tube 20, and a heating device 40 and a detection and adjustment device are fixed on the delivery tube 20; The system also includes: a monitoring module for obtaining data information of the heated enteral nutrition component, specifically, the data information includes the type of enteral nutrition agent, the flow rate V of the nutrient solution, the wall thickness d of the delivery tube 20, the thermal conductivity k of the delivery tube 20, the length L of the heating device 40, the room temperature , room temperature of nutrient solution , Heating temperature of nutrient solution , the temperature of the heating device 40 , the heating power P of the heating device 40 and the nutrient solution temperature required by the patient .

[0043] The control module 70 is used to adjust the flow rate of the nutrient solution flowing through the delivery pipe 20; to determine the heating power of the heating device 40 when delivering the nutrient solution based on the data information; and to deliver the nutrient solution at a scheduled time.

[0044] The user terminal 60 is used for inputting, outputting and displaying data information, and for issuing reminder information.

[0045] The control module 70 is electrically connected to the monitoring module and the user terminal 60 .

[0046] It is understandable that the control system of the heated enteral nutrition component provided in this embodiment is used in conjunction with the heated enteral nutrition component provided in Example 1. The control module 70 is used to adjust the flow rate of the nutrient solution flowing through the delivery tube 20. The control module 70 determines the heating power of the heating device 40 when delivering the nutrient solution by analyzing and processing the data information obtained by the monitoring module, thereby achieving precise temperature control. The user terminal 60 is used to input, output and display data information, and to issue reminder information, so that medical staff can view and adjust the flow rate of the nutrient solution flowing through the delivery tube 20 and the heating power of the heating device 40.

[0047] It should be noted that the user terminal 60 may be a display to display data information of the heated enteral nutrition component; the user terminal 60 has a voice reminder function to send out reminder information.

[0048] In an optional embodiment, the control module 70 is used to determine the heating power of the heating device 40 based on the data information and the flow rate of the nutrient solution, including: S1, based on room temperature Or the room temperature of the nutrient solution The temperature of the nutrient solution required by the patient The relationship between determines whether to start the heating device 40 to heat the nutrient solution flowing through the delivery pipe 20; it can be understood that, in general, the room temperature Equal to the room temperature of the nutrient solution , when room temperature Equal to the room temperature of the nutrient solution At room temperature Or the room temperature of the nutrient solution The temperature of the nutrient solution required by the patient The relationship between determines whether to start the heating device 40 to heat the nutrient solution flowing through the delivery pipe 20.

[0049] When room temperature Lower or higher than the normal temperature of the nutrient solution Based on the normal temperature of the nutrient solution The temperature of the nutrient solution required by the patient The relationship between the temperature of the nutrient solution and the temperature of the enteral nutrient solution determines whether to start the heating device 40 to heat the nutrient solution flowing through the delivery tube 20; for elderly patients with diarrhea, the temperature of the enteral nutrient solution should be strictly controlled within the range of 38-42°C. Based on this, the most suitable nutrient solution temperature required by the patient is determined according to the patient's body temperature. , In the range of 38-42℃, when the room temperature of the nutrient solution Lower than the temperature of the nutrient solution required by the patient When the heating device 40 is started, the nutrient solution flowing through the delivery pipe 20 is heated.

[0050] S2, after determining to start the heating device 40 to heat the nutrient solution flowing through the delivery tube 20: determine the type of enteral nutrient agent, and determine the density ρ, specific heat capacity c and flow rate V of the nutrient solution based on the type of enteral nutrient agent; it can be understood that different types of enteral nutrient agents have different densities ρ and specific heat capacities c of the nutrient solution, and the range of nutrient solution flow rate V adapted to the patient is different.

[0051] S3, determine the nutrient solution temperature required by the patient , based on the patient's required nutrient solution temperature Determine the heating temperature of the nutrient solution ; Based on the normal temperature of the nutrient solution , Heating temperature of nutrient solution Determine the temperature difference of the nutrient solution It is understood that, in general, without considering the slight heat loss during the heated nutrient solution entering the patient's body through the partial delivery tube 20, the nutrient solution temperature required by the patient is Equal to the heating temperature of the nutrient solution ; Then based on the normal temperature of the nutrient solution , Heating temperature of nutrient solution Determine the temperature difference of the nutrient solution , .

[0052] S4, based on the length L of the heating device 40 and the flow rate V of the nutrient solution, determine the time t for a unit volume of the nutrient solution A to flow through the heating device 40; it can be understood that the formula , Therefore, the time t for a unit volume of the nutrient solution A to flow through the heating device 40 is determined based on the length L of the heating device 40 and the flow rate V of the nutrient solution.

[0053] S5, determining the heating power P of the heating device 40 based on the density ρ, specific heat c, flow rate V, temperature difference Δt and the time t for a unit volume of the nutrient solution A to flow through the heating device 40. It can be understood that the formula ,in , Therefore, based on the density ρ, specific heat c, flow rate V, temperature difference of the nutrient solution The time t for a unit volume of nutrient solution A to flow through the heating device 40 determines the time for heating a unit volume of nutrient solution A to the nutrient solution temperature required by the patient. , the required heating power P of the heating device 40.

[0054] S6, based on the heating temperature of the nutrient solution and the temperature of the heating device 40 Correcting the heating power P of the heating device 40; It is understandable that the heating power P of the heating device 40 required for a unit volume of the nutrient solution A is affected by the room temperature of the nutrient solution. , Heating temperature of nutrient solution , the temperature of the heating device 40 , the density ρ of the nutrient solution, specific heat capacity c, flow velocity V and other factors.

[0055] It is understandable that in the process of heat transfer from the heating device 40 to the nutrient solution in the delivery pipe 20, there will be a certain amount of heat loss. In order to accurately control the heating power of the heating device 40 to meet the heating temperature requirement of the nutrient solution flowing through the delivery pipe 20, based on the heating temperature of the nutrient solution The heating power P of the heating device 40 is corrected based on the temperature T3 of the heating device 40. Specifically, the corrected heating power P=heating power P+heat loss Q; , where: Q: the amount of heat transferred per unit area per unit time, i.e., thermal power, in W; k: thermal conductivity W / mk; A: contact area; d: heat transfer distance, i.e., the wall thickness of the delivery pipe 20; : The temperature of the heating device 40, in °C; The heating temperature of the nutrient solution, in °C. In the formula, the values ​​of Q, k, A, and d are constant, so in S61, based on the heating temperature of the nutrient solution and the temperature of the heating device 40 The heat loss Q is determined based on the relationship between ; S62 , the heating power P of the heating device 40 is corrected based on the heat loss Q.

[0056] In an optional embodiment, the control module 70 is used to time the delivery of the nutrient solution, including: controlling the detection and adjustment device to stop delivering the nutrient solution after the nutrient solution delivery time reaches a preset delivery time; controlling the detection and adjustment device to start delivering the nutrient solution when the time to stop delivering the nutrient solution reaches a preset interval, and controlling the detection and adjustment device to stop delivering the nutrient solution after the nutrient solution delivery time reaches the preset delivery time; The control module 70 is also used to record the flow rate of the nutrient solution and the time of delivering the nutrient solution, and determine the amount of the nutrient solution based on the flow rate of the nutrient solution and the time of delivering the nutrient solution. When the recorded amount of nutrient solution is equal to the total amount of nutrient solution placed in the nutrient bag 10, a prompt message is output; the user terminal 60 is used to issue a reminder message.

[0057] It is understandable that for patients who need intermittent nasogastric feeding, the interval and the infusion time are preset; when the nutrient solution needs to be delivered, the detection and adjustment device is controlled to stop delivering the nutrient solution after the nutrient solution delivery time reaches the preset infusion time; the detection and adjustment device is controlled to start delivering the nutrient solution when the time from the last stop of nutrient solution delivery to the next start of nutrient solution delivery reaches the preset interval. While delivering the nutrient solution, the heating device 40 is started to heat the nutrient solution in the delivery tube 20, realizing the timed heating function and meeting the needs of patients with intermittent nasogastric feeding.

[0058] It is understandable that because the capacity of the nutrient solution in the nutrient bag 10 is constant, the nutrient solution in the nutrient bag 10 will be used up. In order to conveniently prompt the medical staff to add new nutrient solution, the control module 70 records the flow rate of the nutrient solution and the time of delivering the nutrient solution. The flow rate of the nutrient solution multiplied by the time of delivering the nutrient solution is equal to the amount of nutrient solution used. When the recorded amount of nutrient solution used is equal to the total amount of nutrient solution placed in the nutrient bag 10, a prompt message is output; the user terminal 60 receives the prompt message and sends a reminder message to remind the medical staff to add nutrient solution.

[0059] The thermal wire 43, indoor temperature detection device 50, first temperature detection device 51, second temperature detection device 52, third temperature detection device 54, flow rate detection control device 53 and user terminal 60 involved in the above embodiment are products and electrical components using the existing technology, and the connection relationship, specific structure and working principle between them and the control module 70 all adopt the existing technology in the field; their power supply and principles are clear to those skilled in the art and will not be described in detail here; the connection and installation of their various parts and the signal transmission principles belong to the well-known technology in the field.

[0060] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A warming enteral nutrition component, characterized in that: It includes a nutrient bag, a delivery tube and a connecting device connecting the nutrient bag and the delivery tube, and a heating device and a detection and adjustment device are fixed on the delivery tube; the heating device is used to heat the nutrient solution flowing through the delivery tube; the detection and adjustment component is used to detect the indoor temperature, the temperature of the nutrient solution flowing through the delivery tube before and after heating, and the temperature of the heating device, and is used to detect and adjust the flow rate of the nutrient solution flowing through the delivery tube; the heating device and the detection and adjustment component are electrically connected to a control module.

2. The heated enteral nutrition assembly according to claim 1, characterized in that: The connecting device comprises an inlet adapted to the output end of the nutrient bag and an outlet adapted to the input end of the delivery tube.

3. The heated enteral nutrition assembly according to claim 1, characterized in that: The heating device includes a first body and a second body hinged to the first body, and a plurality of heat-conducting wires are circumferentially spaced in the first body and the second body; the first body and the second body are wrapped around the delivery tube to heat the nutrient solution flowing through the delivery tube; the first body is connected to a first connecting part, and the second body is connected to a second connecting part, the first connecting part is spaced apart with connecting grooves, and the second connecting part is spaced apart with connecting protrusions, and the connecting grooves are matched with the connecting grooves; the inner sides of the first body and the second body are connected with a heat-conducting layer; the outer sides of the first body and the second body are connected with a thermal insulation layer.

4. The heated enteral nutrition assembly according to claim 1, characterized in that: The detection and adjustment component includes an indoor temperature detection device, a first temperature detection device, a second temperature detection device, a third temperature detection device and a flow rate detection control device; the indoor temperature detection device is used to detect the room temperature; the first temperature detection device is used to detect the normal temperature of the nutrient solution flowing through the delivery pipe without heating, the second temperature detection device is used to detect the heated temperature of the nutrient solution flowing through the delivery pipe after being heated by the heating device, and the third temperature detection device is used to detect the temperature of the heating device; the flow rate detection control device is used to detect and control the flow rate of the nutrient solution flowing through the delivery pipe.

5. The heated enteral nutrition assembly according to claim 1, characterized in that: It also includes a user terminal, which is connected to the heating device and the control module, and is connected to a fixing device; the user terminal is used to input, output and display data information of the heated enteral nutrition component.

6. A control system for a heated enteral nutrition assembly, characterized in that: include: A nutrient bag, a delivery tube, and a connecting device connecting the nutrient bag and the delivery tube, wherein a heating device and a detection and adjustment device are fixed on the delivery tube; Also included: a monitoring module for obtaining data information of the warming enteral nutrition component; A control module, used for adjusting the flow rate of the nutrient solution flowing through the delivery pipe; used for determining the heating power of the heating device when delivering the nutrient solution based on the data information; and used for timing the delivery of the nutrient solution; A user terminal, used for inputting, outputting and displaying the data information, and for issuing reminder information; The control module is electrically connected to the monitoring module and the user terminal.

7. The control system of the heated enteral nutrition assembly according to claim 6, characterized in that: The data information includes the type of enteral nutrition agent, the flow rate V of the nutrient solution, the wall thickness d of the delivery tube, the thermal conductivity k of the delivery tube, the length L of the heating device, the room temperature , room temperature of nutrient solution , Heating temperature of nutrient solution , the temperature of the heating device , the heating power P of the heating device and the nutrient solution temperature required by the patient .

8. The control system of the heated enteral nutrition assembly according to claim 7, characterized in that: The control module is used to determine the heating power of the heating device based on the data information and the flow rate of the nutrient solution, including: Based on room temperature Or the room temperature of the nutrient solution The temperature of the nutrient solution required by the patient determining whether to start the heating device to heat the nutrient solution flowing through the delivery pipe; After determining to start the heating device to heat the nutrient solution flowing through the delivery tube: determining the type of the enteral nutrient agent, and determining the density ρ, specific heat capacity c and flow rate V of the nutrient solution based on the type of the enteral nutrient agent; Determine the patient's required nutrient solution temperature , based on the patient's required nutrient solution temperature Determine the heating temperature of the nutrient solution ; Based on the normal temperature of the nutrient solution , Heating temperature of nutrient solution Determine the temperature difference of the nutrient solution ; Determine the time t for a unit volume of nutrient solution A to flow through the heating device based on the length L of the heating device and the flow rate V of the nutrient solution; Based on the density ρ, specific heat c, flow rate V, temperature difference of the nutrient solution The heating power P of the heating device is determined by the time t that a unit volume of nutrient solution A flows through the heating device.

9. The control system of the heated enteral nutrition assembly according to claim 8, characterized in that: The control module is used to determine the heating power of the heating device based on the data information and the flow rate of the nutrient solution, and also includes: the control module is used to determine the heating power of the heating device based on the data information and the flow rate of the nutrient solution, and also includes: based on the heating temperature of the nutrient solution and the temperature of the heating device The heating power P of the heating device is corrected based on the relationship between and the temperature of the heating device The relationship between determines the heat loss Q; Based on the heat loss Q, the heating power P of the heating device is corrected.

10. The control system of the heated enteral nutrition assembly according to claim 6, characterized in that: The control module is used to time the delivery of the nutrient solution, including: controlling the detection and adjustment device to stop delivering the nutrient solution after the nutrient solution delivery time reaches the preset delivery time; controlling the detection and adjustment device to start delivering the nutrient solution when the time to stop delivering the nutrient solution reaches the preset interval, and controlling the detection and adjustment device to stop delivering the nutrient solution after the nutrient solution delivery time reaches the preset delivery time; The control module is also used to record the flow rate of the nutrient solution and the time of delivering the nutrient solution, determine the amount of the nutrient solution based on the flow rate of the nutrient solution and the time of delivering the nutrient solution, and output a prompt message when the recorded amount of nutrient solution is equal to the total amount of nutrient solution placed in the nutrient bag; the user terminal is used to issue a reminder message.

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