Syringe and nutrition supply system

Abstract

The invention provides an injector and a nutrition supply system. Specifically, the nutrition supply system is provided with a nutrition cup and a flow guide unit; the nutrition cup comprises a cup body, at least one heating piece, at least one temperature sensor and a control unit. The cup body comprises a base and a side wall; the at least one heating element and the at least one temperature sensor are distributed in the base and the side wall; the control unit is connected with the heating pieces and the temperature sensors. A first lead-out interface is formed in the position, close to the base, of the side wall; the flow guide unit is used for being connected with the first leading-out connector so that liquid in the cup body can flow out through the flow guide unit. According to the technical scheme, the temperature of the liquid in the nutrition cup can be accurately controlled, and the pollution risk of the nutrient solution can be effectively reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to a syringe and a nutrition supply system. Background Art

[0002] The optimum temperature required for enteral nutrition solution for hospitalized patients is 37-40 degrees Celsius. In actual operation, patients need to first heat the nutrient powder or nutrient solution to a temperature higher than the optimum temperature, then wait for the temperature to drop to the optimum temperature, and finally use a syringe to repeatedly aspirate and inject the nutrient solution in the container into the gastric tube. The whole process is cumbersome and easy to contaminate the nutrient solution. In addition, the temperature drops quickly, which increases the risk of intestinal intolerance in patients and affects the treatment effect. If a nutrient pump is used for temperature control and nutrient solution infusion, there are problems such as high cost, inconvenience in carrying, and difficulty in maintenance. It is not suitable for patients receiving home nutrition. Summary of the Invention

[0003] In view of this, an object of the present disclosure is to provide a syringe and a nutrition supply system.

[0004] Based on the above purpose, the present disclosure provides a syringe, comprising: a barrel, a push-pull rod, a first piston, a second piston and a third piston; wherein,

[0005] The cylinder comprises a first end and a second end opposite to each other; wherein the first end is provided with a first channel and a second channel;

[0006] The first piston is disposed on the push-pull rod and is capable of entering the cylinder through the second end;

[0007] A second piston is provided in the first channel to form a first one-way valve, and a third piston is provided in the second channel to form a second one-way valve; wherein,

[0008] The flow directions of the first one-way valve and the second one-way valve are opposite.

[0009] In some embodiments, a first limiting portion protruding inwardly is provided on an inner side of the first channel close to the first end;

[0010] A second limiting portion protruding inwardly is provided on the inner side of the second channel away from the first end;

[0011] The second piston includes a first hollow portion and a first blocking portion cooperating with the first limiting portion to control the opening and closing of the first channel when an external force acts on the push-pull rod;

[0012] The third piston includes a second hollow portion and a second blocking portion cooperating with the second limiting portion to control the opening and closing of the second channel when an external force acts on the push-pull rod.

[0013] In some embodiments, the first limiting portion is a funnel structure, and the first blocking portion is a cone structure; and / or

[0014] The second limiting portion is a funnel structure, and the second blocking portion is a cone structure.

[0015] In some embodiments, a third limiting portion protruding inward is provided on the inner side of the first channel away from the first end; the third limiting portion is used to limit the position of the second piston on the side of the first channel away from the first end;

[0016] An inwardly protruding fourth limiting portion is provided on the inner side of the second channel close to the first end; the fourth limiting portion is used to limit the position of the third piston on the side of the second channel close to the first end.

[0017] In some embodiments, the first channel includes a first component and a second component, and the first component and the second component are detachably connected; the second channel includes a third component and a fourth component, and the third component and the fourth component are detachably connected.

[0018] In some embodiments, the connection portion between the first component and the second component is located between the first limiting portion and the third limiting portion; and / or

[0019] The connecting portion of the third component and the fourth component is located between the second limiting portion and the fourth limiting portion.

[0020] Based on the same inventive concept, the embodiment of the present disclosure further provides a nutrition supply system, including a nutrition cup and a diversion unit; wherein,

[0021] The nutrition cup includes a cup body, at least one heating element, at least one temperature sensor and a control unit;

[0022] The cup body includes a base and a side wall; the at least one heating element and the at least one temperature sensor are distributed in the base and the side wall;

[0023] The control unit is connected to each of the heating elements and each of the temperature sensors;

[0024] A first outlet port is provided on the side wall near the base;

[0025] The guide unit is used to connect to the first outlet interface so that the liquid in the cup body flows out through the guide unit.

[0026] In some embodiments, the diversion unit comprises a first sub-conduit, a second sub-conduit and any of the aforementioned syringes; wherein,

[0027] The first sub-conduit is used to connect the first outlet interface and the second channel; the second sub-conduit is used to connect the first channel;

[0028] When a first external force acts on the syringe, the liquid in the cup flows into the syringe through the first sub-conduit; when a second external force acts on the syringe, the liquid in the syringe flows out through the second sub-conduit.

[0029] In some embodiments, the diversion unit includes a three-way conduit and a three-way valve; wherein,

[0030] The three-way conduit comprises an inlet end, an outlet end and a pressure end; the inlet end is used to connect to the first outlet interface; the pressure end is used to connect to the syringe;

[0031] The three-way valve is arranged at the bifurcation position of the three-way conduit;

[0032] When the three-way valve controls the inlet end and the pressure end to be connected, and a first external force acts on the syringe, the liquid in the cup body flows into the syringe through the inlet end and the pressure end;

[0033] When the three-way valve controls the outlet port and the pressure port to communicate, and a second external force acts on the syringe, the liquid in the syringe flows out through the pressure port and the outlet port.

[0034] In some embodiments, the three-way valve includes a valve body and a roller; wherein,

[0035] The valve body is sleeved on the three-way conduit; a clamping groove is provided in the valve body in the direction from the inlet end to the outlet end, and the distance between the clamping groove and the three-way conduit first increases and then decreases along the direction from the inlet end to the outlet end;

[0036] The roller is engaged in the slot, and when a third external force acts on the roller, the roller rolls along the slot.

[0037] In some embodiments, the first outlet interface is a reducing interface; and a surface of the reducing interface is provided with threads.

[0038] In some embodiments, the nutrition cup further includes a stirring unit; the stirring unit is disposed on the base and connected to the control unit.

[0039] In some embodiments, the nutrition cup further comprises a cover, wherein the cover comprises a second outlet interface.

[0040] As can be seen from the above, the present disclosure provides a syringe and a nutrition supply system, which are provided with a nutrition cup and a diversion unit; the nutrition cup includes a cup body, at least one heating element, at least one temperature sensor and a control unit; the cup body includes a base and a side wall; the at least one heating element and the at least one temperature sensor are distributed in the base and the side wall; the control unit is connected to each of the heating elements and each of the temperature sensors; the side wall is provided with a first outlet interface near the base; the diversion unit is used to connect to the first outlet interface so that the liquid in the cup body flows out through the diversion unit. Such a technical solution can not only achieve accurate control of the liquid temperature in the nutrition cup, but also effectively reduce the risk of contamination of the nutrient solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 A structural schematic diagram of a nutrition supply system provided by an embodiment of the present disclosure is shown;

[0043] Figure 2A A schematic structural diagram of a nutrition cup provided by an embodiment of the present disclosure is shown;

[0044] Figure 2B A schematic cross-sectional view of a nutrition cup provided by an embodiment of the present disclosure is shown;

[0045] Figure 3A A schematic diagram showing a working state of a flow guide unit provided by an embodiment of the present disclosure is shown;

[0046] Figure 3B A schematic diagram showing another working state of a flow guide unit provided by an embodiment of the present disclosure is shown;

[0047] Figure 4A A schematic structural diagram of a three-way valve provided in an embodiment of the present disclosure is shown;

[0048] Figure 4B Show Figure 4A A schematic diagram of the top structure of a three-way valve;

[0049] Figure 5A A schematic structural diagram of a syringe provided by an embodiment of the present disclosure is shown;

[0050] Figure 5B A partial structural schematic diagram of a syringe provided by an embodiment of the present disclosure is shown;

[0051] Figure 5C A partial structural schematic diagram of a syringe provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0052] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0053] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should have the usual meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0054] As mentioned in the background section, providing enteral nutrition solutions to hospitalized patients is a cumbersome process that can easily contaminate the solution. Furthermore, rapid temperature drops can increase the risk of intestinal intolerance and compromise treatment effectiveness. Furthermore, excessively high temperatures during the heating process can lead to nutrient loss.

[0055] In view of this, an embodiment of the present disclosure provides a syringe and a nutrition supply system, which is provided with a nutrition cup and a diversion unit; the nutrition cup includes a cup body, at least one heating element, at least one temperature sensor and a control unit; the cup body includes a base and a side wall; the at least one heating element and the at least one temperature sensor are distributed in the base and the side wall; the control unit connects each of the heating elements and each of the temperature sensors; the side wall is provided with a first outlet interface near the base; the diversion unit is used to connect to the first outlet interface so that the liquid in the cup body flows out through the diversion unit. Such a technical solution can not only achieve accurate control of the liquid temperature in the nutrition cup, but also effectively reduce the risk of contamination of the nutrient solution.

[0056] Figure 1 FIG. 1 is a schematic diagram showing a structure of a nutrition supply system provided by an embodiment of the present disclosure. Figure 1As shown, the nutrient supply system 100 includes a nutrient cup 101 and a flow diversion unit 102. The nutrient cup precisely controls the temperature of the liquid (e.g., nutrient solution, water, etc.) placed within the cup, ensuring that the liquid temperature meets nutrient supply requirements while preventing nutrient loss. This addresses the issues of nutrient loss and temperature control issues associated with microwave heating and water-insulated heating in related technologies. Using the flow diversion unit to deliver nutrient solution is not only convenient but also contactless, preventing contamination of the liquid.

[0057] In order to make the technical solution of the present disclosure clearer and easier to understand, the nutrition supply system provided by the embodiment of the present disclosure is introduced below with reference to the accompanying drawings.

[0058] Figure 2A A schematic structural diagram of a nutrition cup provided by an embodiment of the present disclosure is shown; Figure 2B FIG. 1 is a schematic diagram showing a cross-sectional structure of a nutrition cup provided by an embodiment of the present disclosure. Figure 2A and Figure 2B As shown, the nutrition cup 200 includes a cup body 201, a cover 202, at least one heating element, at least one temperature sensor, a control unit, a display panel 203, and a power module 204. Here, the power module 204 can be connected to the control unit, the heating element, the display panel 203, etc., for controlling the supply of electrical energy.

[0059] In some embodiments, as Figure 2B As shown, the cup body 201 includes a base 2012 and a side wall 2013. The cup body 201 can contain liquid. It should be noted that the liquid here includes but is not limited to nutrient solution, water, milk, solution with milk powder, medicine powder, etc.

[0060] Optionally, the cup body 201 can be a composite layer structure. For example, the cup body 201 comprises a three-layer structure. Here, the three layers, in order from the outside to the inside, can be a plastic shell layer, an insulation layer, and a stainless steel layer. It should be noted that the stainless steel layer facilitates heat conduction, ensuring a more uniform temperature of the liquid; the insulation layer helps reduce energy loss and conserve energy; and the plastic shell layer protects the insulation layer.

[0061] In some embodiments, as Figure 2B As shown, the inner surface of the side wall 2013 can be provided with capacity scale lines 2014 for recording the amount of liquid. Utilizing the capacity scale lines 2014, not only can the volume of liquid added be controlled, but also based on the capacity scale lines 2014, the outflow of liquid can be determined.

[0062] In some embodiments, as Figure 2AAs shown, the nutrition cup 200 further includes a cover 202. The cover 202 includes a second outlet port 2021. It should be understood that the cooperation between the cover 202 and the cup 201 helps to maintain the temperature of the nutrition cup 200.

[0063] The second outlet port 2021 helps balance the pressure difference inside and outside the nutrition cup 200, avoiding the formation of negative pressure in the cup, which affects the flow of liquid. In addition, when the nutrition cup 200 is used for daily use, a straw can be inserted into the second outlet port 2021 for convenient drinking.

[0064] In some embodiments, a control unit is connected to each heating element and each temperature sensor. The control unit can control the operating state of the heating element based on the temperature data collected by each temperature sensor. For example, if the temperature data is greater than a preset temperature, the heating element is turned off; or if the temperature data is less than a preset temperature, the heating element is turned on.

[0065] Here, the heating element may be a heating wire, an electric heating film, etc. The temperature sensor may be a thermistor, a semiconductor temperature sensor, etc. This disclosure does not limit this.

[0066] The display panel 203 can be connected to the control unit. The temperature data collected by the temperature sensor can be displayed on the display panel 203, so that the user can understand the real-time temperature of the liquid.

[0067] Optionally, the display panel 203 may be a touch panel. The user may use the touch panel to set a preset temperature so that the control unit performs temperature control based on the preset temperature.

[0068] In addition, users can also use the touch panel to set the heating speed, such as fast, medium, low, keep warm, etc.

[0069] To precisely control the temperature of the liquid, at least one heating element and at least one temperature sensor are distributed within the base 2012 and the sidewall 2013. For example, the at least one heating element and the at least one temperature sensor can be evenly distributed within the base 2012 and the sidewall 2013. Alternatively, the position of the heating element can be determined based on the heat influence range of the heating element, although this disclosure is not limited thereto.

[0070] In conjunction with the above, the cup body 201 comprises a three-layer structure; at least one heating element and at least one temperature sensor can be disposed between the insulation layer and the stainless steel layer. This arrangement can reduce heat loss from the at least one heating element, maximizing the amount of heat used to heat the liquid within the cup body 200.

[0071] In some embodiments, a first outlet port 2011 is provided on the side wall 2013 near the base 2012. When the diversion unit is connected to the first outlet port 2011, the liquid in the cup body 201 flows out through the diversion unit.

[0072] For example, the diversion unit is a catheter, one end of which is connected to the first outlet port 2011 and the other end is connected to the patient's gastric tube, so that the liquid in the cup body 201 can flow out of the cup body 201 under the action of gravity and finally enter the gastric tube, thereby achieving nutritional supply for the patient.

[0073] In some embodiments, the first outlet interface 2011 is a variable diameter interface. Here, the variable diameter interface can be suitable for catheters of various diameters, which facilitates the connection and fixation of the guide unit.

[0074] Furthermore, the surface of the reducing interface is provided with threads, which can increase the friction between the catheter and the first outlet interface 2011 to prevent the catheter from slipping.

[0075] As previously mentioned, the liquid can be added to a solution of milk powder, medicinal powder, or the like. To promote the dissolution of powders such as milk powder and medicinal powder, the nutrition cup further includes a stirring unit 205 ; the stirring unit 205 is disposed on the base 2012 and connected to the control unit. The control unit can control the operating state of the stirring unit 205 .

[0076] For example, the stirring unit 205 may include a stirring wheel and a motor, wherein the motor may be built into the base 2012, and the stirring wheel is connected to the motor and exposed outside the base 2012 to achieve stirring of the liquid.

[0077] In addition to the above-mentioned catheter that uses gravity to force liquid into the gastric tube, the diversion unit 102 of the embodiment of the present disclosure may also have an alternative technical solution of using a syringe to pressurize and inject, as exemplified below:

[0078] Figure 3A A schematic diagram showing a working state of a flow guiding unit 300 provided by an embodiment of the present disclosure is shown; Figure 3B A schematic diagram showing another working state of a flow guiding unit 300 provided by an embodiment of the present disclosure is shown; Figure 4A A schematic structural diagram of a three-way valve provided in an embodiment of the present disclosure is shown; Figure 4B Show Figure 4A The schematic diagram of the top view of the three-way valve. Figures 3A to 4B As shown, the flow guiding unit 300 includes a three-way conduit 301 and a three-way valve 302. Here, the three-way conduit 301 can be a T-shaped tube or a Y-shaped tube, which is not limited in the present disclosure.

[0079] Furthermore, the three-way catheter 301 includes an inlet port 3011, an outlet port 3013, and a pressure port 3012. The inlet port 3011 is used to connect to the first outlet port 2011; the pressure port is used to connect to a syringe; and the outlet port 3013 can be connected to a gastric tube. Here, the syringe can be an ordinary syringe, and this disclosure does not limit this.

[0080] like Figure 3Aand Figure 3B As shown, the three-way valve 302 is set at the bifurcation position of the three-way conduit 301. Figure 3A As shown, when the three-way valve 302 controls the inlet end 3011 and the pressure end 3012 to be connected, and a first external force (such as a pulling force) acts on the syringe, the liquid in the cup body 201 flows into the syringe through the inlet end 3011 and the pressure end 3012. Figure 3B As shown, when the three-way valve 302 controls the outlet port 3013 and the pressure port 3012 to communicate, and a second external force (e.g., a thrust) acts on the syringe, the liquid in the syringe flows out through the pressure port 3012 and the outlet port 3013 and enters the pipeline connected to the outlet port 3013. It should be noted that the pipeline connected to the outlet port 3013 can be a gastric tube or an intestinal tube, and this disclosure is not limited to this.

[0081] refer to Figure 4A and Figure 4B The three-way valve 302 includes a valve body 3021 and a roller 3022. The valve body 302 is sleeved on the three-way conduit (such as Figure 3A and Figure 3B It should be understood that the valve body 302 includes a first opening, a second opening, and a third opening to facilitate the passage of branch conduits corresponding to the inlet end 3011, the outlet end 3013, and the pressure end 3012 of the three-way conduit 301.

[0082] In the direction from the inlet end 3011 to the outlet end 3013 (corresponding to Figure 4A (From right to left along the dashed line 1), a retaining groove 3023 is provided within the valve body 3021. Along the direction from the inlet end 301 to the outlet end 3013, the distance h between the retaining groove 3023 and the three-way conduit 301 increases first and then decreases. It should be noted that the distance h between the retaining groove 3023 and the three-way conduit 301 can be the distance between the wall of the three-way conduit 301 or the distance between the central axis of the three-way conduit 301, and this disclosure is not limited to this. In other words, the dashed line 1 can be the wall of the three-way conduit 301 or the central axis.

[0083] Furthermore, the roller 3022 includes a clamping portion 30221 , which is clamped in the clamping slot 3023 , and when the third external force acts on the roller 3022 , the roller 3022 rolls along the clamping slot 3023 .

[0084] like Figure 3A As shown, a third external force acts on roller 3022, causing it to roll closer to outlet end 3013. The closer it gets to outlet end 3013, the greater the pressure on the branch conduit on the outlet end 3013 side, until it closes, connecting inlet end 3011 and pressure end 3012. At this point, if the syringe connected to pressure end 3012 is pulled, liquid will enter the syringe from the cup through inlet end 3011 and pressure end 3012.

[0085] like Figure 3B As shown, a third external force acts on roller 3022, causing it to roll closer to inlet end 3011. The closer it gets to inlet end 3011, the greater the pressure on the branch conduit on the inlet end 3011 side until it closes, connecting outlet end 3013 and pressure end 3012. At this point, pushing the syringe connected to pressure end 3012 causes liquid to flow out of the syringe through pressure end 3012 and outlet end 3013.

[0086] Compared to relying solely on gravity, syringes allow for pressurized injections. The pressure within the syringe controls the rate of fluid flow, meeting the diverse nutritional needs of patients. Furthermore, ordinary syringes can be used, resulting in low cost.

[0087] This technical solution is not only simple in structure, easy to operate and clean, but also can ensure that the liquid supply is contactless throughout the entire process to avoid contamination.

[0088] It should be noted that the above-mentioned three-way valve 302 is only an example, and other valves with similar functions are also applicable to the technical solution of the present disclosure, and the present disclosure does not limit this.

[0089] In some alternative embodiments, the flow guiding unit includes a first sub-conduit, a second sub-conduit, and a syringe. Here, the first sub-conduit and the second sub-conduit can be straight tubes. The syringe is a double-channel syringe.

[0090] Figure 5A A schematic structural diagram of a dual-channel syringe provided in an embodiment of the present disclosure is shown. Figure 5B A partial structural schematic diagram of a syringe provided by an embodiment of the present disclosure is shown; Figure 5C A partial structural schematic diagram of a syringe provided by an embodiment of the present disclosure is shown.

[0091] like Figures 5A to 5C As shown, syringe 400 includes a barrel 401, a push-pull rod 402, a first piston (not shown), a second piston 4032, and a third piston 4042. Barrel 401 includes a first end 4011 and a second end 4012, which are oppositely disposed. First end 4011 is provided with a first channel 403 and a second channel 404. The first piston is mounted on push-pull rod 402 and can enter barrel 401 via second end 4012. It should be noted that the outer diameter of the first piston matches the inner diameter of barrel 401 to prevent liquid in barrel 401 from flowing out through the first piston.

[0092] In some embodiments, a second piston 4032 is provided in the first channel 403 to form a first one-way valve, and a third piston 4042 is provided in the second channel 404 to form a second one-way valve; wherein the flow directions of the first one-way valve and the second one-way valve are opposite.

[0093] Since the external forces acting on the push-pull rod 402 are the same, the second piston 4032 and the third piston 4042 are subjected to the same forces. Therefore, when the first channel 403 is closed, the second channel 404 is necessarily opened, and when the first channel 403 is opened, the second channel 404 is necessarily closed. Thus, the first channel 403 and the second channel 404 can be used as channels for liquid to enter and exit the syringe, respectively.

[0094] In some embodiments, a first sub-conduit is used to connect first outlet port 2011 and second channel 404; a second sub-conduit is used to connect first channel 403. When a first external force (e.g., pulling force) acts on the syringe, liquid in cup 201 flows into syringe 400 via the first sub-conduit; when a second external force (e.g., pushing force) acts on syringe 400, liquid in syringe 400 flows out via the second sub-conduit. As previously mentioned, the second sub-conduit can be connected to a tube such as a gastric tube, and further description is omitted.

[0095] Further, if Figure 5B As shown, a first limiting portion 4035 protruding inward is provided on the inner side of the first channel 403 near the first end 4011; the second piston 4032 includes a first hollow portion 4033 and a first blocking portion 4034 cooperating with the first limiting portion 4035 to control the opening and closing of the first channel 403 when an external force acts on the push-pull rod.

[0096] For example, when a pulling force acts on the push-pull rod 402, the second piston 4032 moves toward the first end 4011, and the first blocking portion 4034 abuts the first stopper 4035, closing the first channel 403. At this point, liquid cannot pass through the first channel 403. When a pushing force acts on the push-pull rod 402, the second piston 4032 moves away from the first end 4011, and the first blocking portion 4034 and the first stopper 4035 no longer contact each other, opening the first channel 403. At this point, liquid can pass through the first channel 403 via the first hollow portion 4033.

[0097] like Figure 5C As shown, a second limiting portion 4045 protruding inward is provided on the inner side of the second channel 404 away from the first end 4011; the third piston 4042 includes a second hollow portion 4044 and a second blocking portion 4043 cooperating with the second limiting portion 4045 to control the opening and closing of the second channel 404 when an external force acts on the push-pull rod.

[0098] For example, when a pulling force is applied to the push-pull rod 402, the third piston 4042 moves toward the first end 4011, the second blocking portion 4043 and the second stopper 4045 no longer contact each other, and the second channel 404 is opened. Liquid can now flow through the second channel 404 via the second hollow portion 4044. When a pushing force is applied to the push-pull rod 402, the third piston 4042 moves away from the first end 4011, the second blocking portion 4043 abuts the second stopper 4045, and the second channel 404 is closed. Liquid cannot now flow through the second channel 404.

[0099] It should be noted that the first blocking portion 4033 and the second blocking portion 4043 may be solid structures.

[0100] Optionally, the first limiting portion 4035 is a funnel structure, and the first blocking portion 4034 is a cone structure. The funnel structure and the cone structure can ensure that the first limiting portion 4035 and the first blocking portion 4034 have sufficient contact area to ensure that the first channel 403 is closed.

[0101] Optionally, the second limiting portion 4045 is a funnel structure and the second blocking portion 4043 is a cone structure. The funnel structure and the cone structure can ensure that the second limiting portion 4045 and the second blocking portion 4043 have sufficient contact area to ensure that the second channel 404 is closed.

[0102] It should be noted that the first blocking portion 4034 and the second blocking portion 4043 may also be trapezoidal platforms, which is not limited in the present disclosure.

[0103] To define the positions of the second piston 4032 and the third piston 4042 and the two channels, in some embodiments, as Figure 5B As shown, a third limiting portion 4031 protruding inward is provided on the inner side of the first channel 403 away from the first end 4011; the third limiting portion 4031 is used to limit the position of the second piston 4032 on the side of the first channel 403 away from the first end 4011 to prevent the second piston 4032 from being separated from the first channel 403; Figure 5C As shown, a fourth limiting portion 4041 protruding inward is provided on the inner side of the second channel 404 near the first end 4011 ; the fourth limiting portion 4041 is used to limit the position of the third piston 4042 on the side of the second channel 404 near the first end 4011 to prevent the third piston 4042 from entering the cylinder 401 .

[0104] In some embodiments, it should be understood that the various conduits in the above embodiments, such as the three-way conduit 301, the first sub-conduit, and the second sub-conduit, are all silicone tubes. The second piston 4032 and the third piston 4042 can be made of corrosion-resistant food-grade materials, such as 304 stainless steel.

[0105] The dual-channel syringe 400 can be a disposable syringe or a multiple-use syringe. Compared with a disposable syringe, a multiple-use syringe can effectively save the patient's usage cost.

[0106] In order to ensure the safety and hygiene of the nutrient solution and avoid confusion between different nutrient solutions during multiple uses, the dual-channel syringe 400 can be cleaned. Figure 5B , the first channel 403 includes a first component 4036 and a second component 4037, and the first component 4036 and the second component 4037 are detachably connected; Figure 5C The second channel 404 includes a third component 4046 and a fourth component 4047, and the third component 4046 and the fourth component 4047 are detachably connected.

[0107] The first channel 403 and the second channel 404 are respectively detachable structures, which is conducive to cleaning the first channel 403 and the second channel 404 and avoiding dead corners in cleaning.

[0108] For example, the connection between first component 4036 and second component 4037 may be mating threads. For example, first component 4036 may include internal threads, while second component 4037 may include external threads. The mating of these threads allows for a removable connection between first component 4036 and second component 4037. It should be noted that the connection between first component 4036 and second component 4037 is sealed to prevent leakage of operating fluids.

[0109] In some embodiments, reference Figure 5B The connection portion between the first assembly 4036 and the second assembly 4037 is located between the first limiting portion 4035 and the third limiting portion 4031. With this arrangement, after the first assembly 4036 and the second assembly 4037 are disassembled, the second piston 4032 can be removed, making it easy to fully clean the second piston 4032, the first assembly 4036, and the second assembly 4037.

[0110] In some alternative embodiments, the connection between the first assembly 4036 and the second assembly 4037 can be located on the side of the second stopper 4035 closer to the first end 4011. With this solution, the first assembly 4036 can be removed and cleaned, along with the second piston 4032 therein. Alternatively, the first assembly 4036 and the second piston 4032 therein can be directly replaced, but this disclosure is not limited thereto.

[0111] In some alternative embodiments, the first channel 403 may be an integral body, and the first channel 403 and the first end 4011 may be provided with mutually cooperating connecting parts, and a detachable connection of the first channel 403 may also be achieved, which is not limited in the present disclosure.

[0112] For example, the connection between third component 4046 and fourth component 4047 may be mating threads. For example, third component 4046 may include internal threads, while fourth component 4047 may include external threads. The mating of these threads allows for a removable connection between third component 4046 and fourth component 4047. It should be noted that the connection between third component 4046 and fourth component 4047 is sealed to prevent leakage of operating fluids.

[0113] In some embodiments, reference Figure 5C The connection portion between the third assembly 4046 and the fourth assembly 4047 is located between the second limiting portion 4045 and the fourth limiting portion 4041. With this arrangement, after disassembling the third assembly 4046 and the fourth assembly 4047, the third piston 4042 can be removed, making it easier to fully clean the third piston 4042, the third assembly 4046, and the fourth assembly 4047.

[0114] In some alternative embodiments, the connection between the third assembly 4046 and the fourth assembly 4047 can be located on the side of the fourth limiting portion 4041 closer to the first end 4011. In this solution, the third assembly 4046 can be removed and cleaned, along with the third piston 4042 therein. Of course, the third assembly 4046 and the third piston 4042 therein can also be directly replaced, but this disclosure is not limited to this.

[0115] In some alternative embodiments, the second channel 404 can be integral, with the second channel 404 and the first end 4011 each having a mating connection. Alternatively, the second channel 404 can be detachably connected, which is not limited in this disclosure. In this case, the second channel 404 can be cleaned or replaced with a new one, which is not limited in this disclosure.

[0116] It should be noted that the above-mentioned different diversion units can be selected and used as needed, and this disclosure does not limit this.

[0117] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Within the scope of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0118] While the disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0119] The embodiments of the present disclosure are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A syringe, characterized in that: include: Cylinder, push-pull rod, first piston, second piston and third piston; wherein, The cylinder comprises a first end and a second end opposite to each other; wherein the first end is provided with a first channel and a second channel; The first piston is disposed on the push-pull rod and is capable of entering the cylinder through the second end; A second piston is provided in the first channel to form a first one-way valve, and a third piston is provided in the second channel to form a second one-way valve; wherein, The flow directions of the first one-way valve and the second one-way valve are opposite.

2. The syringe according to claim 1, characterized in that A first limiting portion protruding inward is provided on the inner side of the first channel close to the first end; A second limiting portion protruding inwardly is provided on the inner side of the second channel away from the first end; The second piston includes a first hollow portion and a first blocking portion cooperating with the first limiting portion to control the opening and closing of the first channel when an external force acts on the push-pull rod; The third piston includes a second hollow portion and a second blocking portion cooperating with the second limiting portion to control the opening and closing of the second channel when an external force acts on the push-pull rod.

3. The syringe according to claim 2, characterized in that The first limiting portion is a funnel structure, and the first blocking portion is a cone structure; and / or The second limiting portion is a funnel structure, and the second blocking portion is a cone structure.

4. The syringe according to claim 2, characterized in that A third limiting portion protruding inward is provided on the inner side of the first channel away from the first end; the third limiting portion is used to limit the position of the second piston on the side of the first channel away from the first end; An inwardly protruding fourth limiting portion is provided on the inner side of the second channel close to the first end; the fourth limiting portion is used to limit the position of the third piston on the side of the second channel close to the first end.

5. The syringe according to claim 4, characterized in that The first channel includes a first component and a second component, and the first component and the second component are detachably connected; the second channel includes a third component and a fourth component, and the third component and the fourth component are detachably connected.

6. The syringe according to claim 5, characterized in that The connecting portion between the first component and the second component is located between the first limiting portion and the third limiting portion; and / or The connecting portion of the third component and the fourth component is located between the second limiting portion and the fourth limiting portion.

7. A nutrition supply system, characterized in that: It includes a nutrition cup and a diversion unit; wherein, The nutrition cup includes a cup body, at least one heating element, at least one temperature sensor and a control unit; The cup body includes a base and a side wall; the at least one heating element and the at least one temperature sensor are distributed in the base and the side wall; The control unit is connected to each of the heating elements and each of the temperature sensors; A first outlet port is provided on the side wall near the base; The guide unit is used to connect to the first outlet interface so that the liquid in the cup body flows out through the guide unit.

8. The nutrition supply system according to claim 7, characterized in that: The guide unit comprises a first sub-conduit, a second sub-conduit and a syringe according to any one of claims 1 to 6; wherein, The first sub-conduit is used to connect the first outlet interface and the second channel; the second sub-conduit is used to connect the first channel; When a first external force acts on the syringe, the liquid in the cup flows into the syringe through the first sub-conduit; when a second external force acts on the syringe, the liquid in the syringe flows out through the second sub-conduit.

9. The nutrition supply system according to claim 7, characterized in that: The diversion unit includes a three-way conduit and a three-way valve; wherein, The three-way conduit comprises an inlet end, an outlet end and a pressure end; the inlet end is used to connect to the first outlet interface; the pressure end is used to connect to the syringe; The three-way valve is arranged at the bifurcation position of the three-way conduit; When the three-way valve controls the inlet end and the pressure end to be connected, and a first external force acts on the syringe, the liquid in the cup body flows into the syringe through the inlet end and the pressure end; When the three-way valve controls the outlet port and the pressure port to communicate, and a second external force acts on the syringe, the liquid in the syringe flows out through the pressure port and the outlet port.

10. The nutrition supply system according to claim 9, characterized in that: The three-way valve includes a valve body and a roller; wherein, The valve body is sleeved on the three-way conduit; a clamping groove is provided in the valve body in the direction from the inlet end to the outlet end, and the distance between the clamping groove and the three-way conduit increases first and then decreases along the direction from the inlet end to the outlet end; The roller is engaged in the slot, and when a third external force acts on the roller, the roller rolls along the slot.

11. The nutrition supply system according to claim 7, characterized in that: The first outlet interface is a reducing interface; a surface of the reducing interface is provided with threads.

12. The nutrition supply system according to claim 7, characterized in that: The nutrition cup further includes a stirring unit; the stirring unit is arranged on the base and connected to the control unit.

13. The nutrition supply system according to claim 7, characterized in that: The nutrition cup further includes a cover body, and the cover body includes a second outlet interface.

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