Fluid delivery apparatus

Abstract

The present disclosure describes a fluid delivery apparatus, comprising a fluid channel, an actuation assembly, and a flow restriction assembly. The fluid channel comprises a first channel, a reservoir, and a second channel, all of which are in fluid communication. The actuation assembly is configured to provide an actuation force to cause fluid to flow into or out of the reservoir. The flow restriction assembly is configured to open or close the first channel and / or the second channel. According to the present disclosure, a fluid delivery apparatus capable of quantitatively delivering fluid is provided.

Description

Fluid transport device Technical Field

[0001] This disclosure relates to the biomedical engineering industry, specifically to a fluid transport device. Background Technology

[0002] Chronic diseases are characterized by their long course, slow progression, and difficulty in being cured. They are typically related to multiple factors, including genetics, environment, and lifestyle, and often require long-term management and treatment. There are many types of chronic diseases, such as diabetes, cardiovascular disease, and chronic kidney disease. Taking diabetes as an example, patients generally treat their condition by using an insulin pump. The insulin pump mimics the physiological pattern of insulin secretion by the pancreas, delivering insulin to the patient's body at regular intervals and in precise quantities to stabilize blood sugar levels.

[0003] Because patients typically need to receive insulin injections at regular intervals and in fixed doses, existing insulin pumps are generally portable, allowing patients to carry them with them or apply them to their body. Portable insulin pumps generally have a cartridge, a piston, and tubing for delivering the medication. When medication is needed, the piston pushes the medication in the cartridge to deliver it through the tubing into the body, and the dosage is controlled by adjusting the distance the piston pushes.

[0004] However, existing portable insulin pumps often experience backflow or leakage during use, making it difficult to maintain a stable insulin dose infused into the patient. Furthermore, most existing portable insulin pumps rely on complex mechanical structures to pump out a specific dose of insulin, resulting in lower reliability and portability, and the complex mechanical structure also increases the energy consumption of the insulin pump. Summary of the Invention

[0005] This disclosure is made in view of the above-mentioned state of the prior art, and its purpose is to provide a fluid conveying device capable of quantitatively conveying fluid.

[0006] Therefore, this disclosure provides a fluid delivery device, including a fluid channel, an actuation component, and a flow limiting component. The fluid channel includes a first channel, a reservoir, and a second channel in fluid communication. The actuation component is configured to provide actuation force to cause fluid to flow into or out of the reservoir. The flow limiting component is configured to open or close the first channel and / or the second channel.

[0007] In this disclosure, a path for fluid flow is provided through a first channel, a reservoir, and a second channel that are in fluid communication. Furthermore, an actuating component provides actuating force, enabling fluid to flow within the fluid channels and facilitating the inflow or outflow of a predetermined volume of fluid from the reservoir. Additionally, a flow-limiting component opens and closes the first and / or second channels, facilitating fluid flow along a desired path.

[0008] In addition, in the fluid transport device disclosed herein, optionally, the first channel, the liquid storage tank, and the second channel are connected in sequence. This allows fluid to flow into the liquid storage tank through the second channel and out of the liquid storage tank through the first channel; or allows fluid to flow into the liquid storage tank through the first channel and out of the liquid storage tank through the second channel.

[0009] Additionally, in the fluid transport device disclosed herein, optionally, the first channel, the liquid storage tank, and the second channel are integrally formed. In this case, since the first channel, the liquid storage tank, and the second channel are integrally formed, the gaps between the components can be reduced compared to a separate fluid channel, thereby reducing the possibility of fluid leakage.

[0010] Additionally, in the fluid transport apparatus disclosed herein, the actuation component may optionally include a power source configured to provide actuating power. This enables the actuation component to provide actuating power.

[0011] Alternatively, in the fluid transport device disclosed herein, the actuating force is applied to the liquid storage tank, and the liquid storage tank actuates the fluid in the liquid storage tank after being subjected to force.

[0012] Alternatively, in the fluid transport apparatus disclosed herein, the actuating force may act on the fluid.

[0013] Alternatively, in the fluid transport apparatus disclosed herein, the actuation force may be configured to increase the pressure in the reservoir to cause fluid to flow out of the reservoir.

[0014] Additionally, in the fluid transport apparatus disclosed herein, the reservoir may optionally be deformed to reduce its volume. In this case, since the reduced volume of the reservoir is the volume of fluid flowing out of the reservoir, reducing the volume of the reservoir helps to precisely control the volume of fluid flowing out of the reservoir.

[0015] Alternatively, in the fluid transport apparatus disclosed herein, the actuation force may be configured to reduce the pressure in the reservoir to allow fluid to flow into the reservoir.

[0016] Additionally, in the fluid transport apparatus disclosed herein, the reservoir may optionally deform to increase its volume. In this case, since the increased volume of the reservoir is the volume of the fluid flowing into it, increasing the volume of the reservoir helps to precisely control the volume of the fluid flowing into it.

[0017] Alternatively, in the fluid transport apparatus disclosed herein, the actuating force may be applied to the liquid storage tank to increase or decrease its volume.

[0018] Additionally, in the fluid transport apparatus disclosed herein, the reservoir may optionally be made of an elastic material. Thus, the reservoir can increase or decrease its volume by utilizing the properties of the elastic material.

[0019] Additionally, in the fluid transport apparatus disclosed herein, optionally, the flow limiting component restricts the flow of fluid in the first channel and / or the second channel.

[0020] Additionally, in the fluid transport apparatus disclosed herein, optionally, the flow limiting component includes a valve disposed on the flow path of the fluid in the first channel and / or the second channel.

[0021] Additionally, in the fluid transport apparatus disclosed herein, optionally, the flow limiting component acts on the first channel and / or the second channel to close or open the fluid flow path.

[0022] Additionally, in the fluid transport apparatus disclosed herein, optionally, the actuation component provides actuating force in response to the flow-limiting component opening the first channel and / or the second channel. In this case, by first connecting the reservoir to the first channel and / or the second channel, and then providing actuating force through the actuation component, the utilization rate of the actuating force can be improved.

[0023] Additionally, in the fluid transport apparatus disclosed herein, optionally, the flow-limiting component alternately opens the first channel and the second channel. In this case, by alternately opening the first channel and the second channel, fluid can flow into or out of the storage tank through one of the first channel and the second channel, thereby enabling directional fluid flow.

[0024] Additionally, the fluid delivery apparatus disclosed herein may optionally include a holding component configured to hold the position of the actuation component and provide actuation force.

[0025] According to this disclosure, a fluid conveying device capable of quantitatively conveying fluid is provided. Attached Figure Description

[0026] This disclosure will now be explained in further detail by way of example only with reference to the accompanying drawings.

[0027] Figure 1 is a schematic diagram illustrating an application scenario of the fluid transport device involved in the example of this disclosure.

[0028] Figure 2A is a schematic diagram illustrating the structure of a first embodiment of the fluid transport device according to the present disclosure.

[0029] Figure 2B is a schematic diagram illustrating a second embodiment of the fluid transport device according to the example of this disclosure.

[0030] Figure 3A is a schematic diagram showing the first embodiment of the actuator involved in the present disclosure acting on the liquid storage tank.

[0031] Figure 3B is a schematic diagram showing the first embodiment of the actuator involved in the example of this disclosure not acting on the liquid storage tank.

[0032] Figure 3C is a schematic diagram illustrating a second embodiment of the actuator involved in the example of this disclosure.

[0033] Figure 3D is a schematic diagram illustrating a third embodiment of the actuator involved in the examples of this disclosure.

[0034] Figure 4A is a schematic diagram showing the first rod in the third preset position according to the example of this disclosure.

[0035] Figure 4B is a schematic diagram showing the first rod in the fourth preset position according to the example of this disclosure.

[0036] Figure 5A is a schematic diagram showing the second rod in the third preset position according to the example of this disclosure.

[0037] Figure 5B is a schematic diagram showing the second rod in the fourth preset position according to the example of this disclosure.

[0038] Figure 6A is a schematic diagram showing the supply of fluid to the reservoir when the valve involved in the example of this disclosure is a passive valve.

[0039] Figure 6B is a schematic diagram showing the fluid receiving in the reservoir when the valve involved in the example of this disclosure is a passive valve.

[0040] Figure 7 is a schematic diagram illustrating the first limiting portion involved in the example of this disclosure.

[0041] Figure 8A is a schematic diagram showing the actuation of the first end of the first retainer involved in the example of this disclosure.

[0042] Figure 8B is a schematic diagram showing the actuation of the second end of the second retainer according to an example of this disclosure.

[0043] Figure 9A is a schematic diagram showing the puncture mechanism entering the target in a first embodiment of the application component involved in the present disclosure.

[0044] Figure 9B is a schematic diagram showing the puncture mechanism exiting the target in a first embodiment of the application component involved in the present disclosure.

[0045] Figure 10A is a schematic diagram showing the puncture mechanism before entering the target in a second embodiment of the application component involved in the present disclosure.

[0046] Figure 10B is a schematic diagram illustrating the puncture mechanism entering the target in a second embodiment of the application component involved in the example of this disclosure.

[0047] Figure 10C is a schematic diagram showing the puncture mechanism exiting the target in a second embodiment of the application component involved in the example of this disclosure.

[0048] Figure 11A is a schematic diagram showing the puncture mechanism before entering the target in a third embodiment of the application component involved in the present disclosure.

[0049] Figure 11B is a schematic diagram illustrating the puncture mechanism entering the target in a third embodiment of the application component involved in the present disclosure.

[0050] Figure 11C is a schematic diagram showing the puncture mechanism exiting the target in a third embodiment of the application component involved in the present disclosure.

[0051] Figure 11D is a schematic diagram illustrating the driving source in a third embodiment of the application component involved in the examples of this disclosure.

[0052] Figure 12A is a schematic diagram illustrating the puncture mechanism entering the target in a fourth embodiment of the application component according to the examples of this disclosure.

[0053] Figure 12B is a schematic diagram illustrating the puncture mechanism withdrawing from the target in a fourth embodiment of the application component involved in the present disclosure.

[0054] Figure 13A is a schematic diagram showing the puncture mechanism entering the target in a fifth embodiment of the application component involved in the present disclosure.

[0055] Figure 13B is a schematic diagram illustrating the puncture mechanism withdrawing from the target in a fifth embodiment of the application component involved in the examples of this disclosure.

[0056] Figure 14A is a schematic diagram showing the puncture mechanism entering the target in a sixth embodiment of the application component involved in the present disclosure.

[0057] Figure 14B is a schematic diagram showing the puncture mechanism withdrawing from the target in a sixth embodiment of the application component involved in the present disclosure.

[0058] Figure 15A is a schematic diagram showing the puncture mechanism before entering the target in a seventh embodiment of the application component involved in the present disclosure.

[0059] Figure 15B is a schematic diagram showing the trigger portion abutting against the first end face in a seventh embodiment of the application component according to the present disclosure.

[0060] Figure 15C is a schematic diagram showing the trigger portion entering the locking groove in a seventh embodiment of the application component involved in the present disclosure.

[0061] Figure 15D is a schematic diagram showing the puncture mechanism withdrawing from the target in a seventh embodiment of the application component involved in the present disclosure.

[0062] Figure 15E is a schematic diagram illustrating the removal of the drive mechanism and puncture mechanism in a seventh embodiment of the application component involved in the examples of this disclosure.

[0063] Figure 15F is a schematic diagram illustrating a seventh embodiment of the application component involved in the examples of this disclosure, obliquely entering the target.

[0064] Explanation of reference numerals in the attached drawings: 100…fluid delivery system, 1…fluid delivery device, 11…adhesive sheet, 12…fluid channel, 121…first channel, 122…liquid reservoir, 123…second channel, 13…actuator assembly, 131…actuator, 1311…actuator part, 1312…first end, 1313…second end, 132…first rod, 1321…first mating part, 133…second rod, 1331…second mating part, 134…power source, 1341…first power assembly, 1342…second power assembly, 1343…pulley, 14…flow limiting assembly, 141…first valve, 1411…first opening and closing element, 1412…first joint, 1413…first limiting part, 142…second valve, 1421…second opening and closing element, 1422…second joint, 15…base Plate, 151… First fixing part, 152… Second fixing part, 153… Third fixing part, 16… Reset assembly, 161… First reset member, 162… Second reset member, 17… Holding assembly, 171… First holding member, 172… Second holding member, 2… Applying assembly, 21… Drive mechanism, 211… Drive source, 212… Transmission member, 213… Housing, 22… Puncture mechanism, 221… Slot, 23… Guide mechanism, 24… Locking mechanism, 241… First locking member, 2411… First end face, 2412… Locking groove, 242… Second locking member, 25… Protective member, 251… Trigger part, 26… Applying bracket, 261… Guide channel, 200… Target, A… Central fulcrum, P1… First fulcrum, P2… Second fulcrum, CA… Central axis. Detailed Implementation

[0065] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same components, and repeated descriptions are omitted. Furthermore, the drawings are merely schematic diagrams, and the proportions of the components or the shapes of the components may differ from actual figures.

[0066] It should be noted that the terms "comprising" and "having" and any variations thereof in this disclosure, such as a process, method, system, product, or device that includes or has a series of steps or units, are not necessarily limited to those steps or units that are explicitly listed, but may include or have other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or devices.

[0067] It should be noted that in this article, relative position and direction terms such as "above", "facing upward", "below", "facing downward", "up and down direction", "left side", "facing left side", "left side", "facing left side", "right side", "facing right side", "right side", "facing right side", "left and right direction", "front", "facing forward", "back", "facing backward", and "front and back direction" are used with reference to the usual operating posture and should not be considered as restrictive.

[0068] In this disclosure, unless otherwise expressly specified and limited, a connection can be understood as a mechanical connection. For example, a "connection" can refer to a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through intermediate components.

[0069] In some examples, leakage can refer to an unintended fluid leak from the fluid delivery system. Since leakage can cause the actual volume of fluid delivered by the fluid delivery device to be less than the preset volume (e.g., insulin), the amount of insulin delivered by the device is insufficient. This can affect the health of the host (also known as the patient or user). Therefore, reducing the likelihood of leakage can help maintain the host's health. Besides reducing the likelihood of leakage, other methods that help the fluid delivery device deliver the preset volume of fluid can also help maintain the host's health.

[0070] This disclosure relates to a fluid delivery device for conveying fluid to a target. The fluid delivery device of this disclosure is characterized by its small size, low cost, simple structure, and portability. Furthermore, the fluid delivery device of this disclosure enables more accurate delivery of the fluid volume to the target. The fluid delivery device of this disclosure may also be referred to as a drug pump, drug delivery device, fluid delivery pump, or fluid infusion device, etc.

[0071] In some examples, the fluid delivery device involved in this disclosure may also be referred to as a delivery device, fluid transport device, fluid distribution device, fluid injection device, fluid pumping device, pump, drug pump, insulin pump, drug delivery device or insulin delivery device, etc.

[0072] In some examples, the fluid referred to in this disclosure may refer to a drug delivered via the fluid delivery device described in this disclosure. For example, the fluid may be any or a combination of hormones, antitoxins, analgesics, peptides, proteins, insulin, enzymes, oligonucleotides, anti-allergic agents, antihistamines, anti-inflammatory agents, corticosteroids, erythropoietin, or vaccines. In some examples, the fluid may be dopamine, dobutamine, adrenaline, sodium nitroprusside, stetamine, propofol, insulin, or glucagon-like peptide-1, etc.

[0073] The fluid transport device and the fluid transport system including the fluid transport device, as described herein, will be described in detail below with reference to the accompanying drawings.

[0074] Figure 1 is a schematic diagram illustrating an application scenario of the fluid transport device 1 involved in the example of this disclosure.

[0075] In some examples, the fluid delivery device 1 can be configured to deliver fluid. In some examples, the fluid delivery device 1 can deliver fluid from its interior to its exterior. In some examples, the fluid delivery device 1 can deliver fluid directly into the body of the target 200. In some examples, the fluid can be pre-stored within the fluid delivery device 1. In this case, since the fluid delivery device 1 can directly deliver fluid into the body of the target 200, the convenience and timeliness of the target 200 obtaining fluid can be improved. In some examples, the target 200 may also be referred to as a host, patient, or user.

[0076] In other examples, the fluid delivery device 1 can also deliver fluid from the outside of the fluid delivery device 1 to the inside. In some examples, the fluid delivery device 1 can also deliver fluid from inside the target 200 to outside the target 200. For example, the fluid delivery device 1 can also collect fluid from inside the target 200.

[0077] In some examples, the fluid delivery device 1 may be disposed on the target 200 (see Figure 1). In some examples, the fluid delivery device 1 may be disposed on the surface or inside the target 200. In some examples, a portion of the fluid delivery device 1 may be disposed on the surface of the target 200, and another portion may be disposed inside the target 200. In other examples, the fluid delivery device 1 may be disposed entirely inside the target 200.

[0078] In some examples, the fluid delivery device 1 can be applied to the target 200. In some examples, the fluid delivery device 1 can be applied to the body surface of the target 200.

[0079] In some examples, the fluid delivery device 1 can be applied to the target 200 by external factors (such as the application component 2 described later). External factors can refer to devices, equipment, or people other than the fluid delivery device 1 that can apply the fluid delivery device 1 to the target 200.

[0080] In other examples, the fluid delivery device 1 can also exert itself on the target 200 through its own structure (described later).

[0081] In other examples, the fluid delivery device 1 can also be applied to the target 200 under the combined effect of external factors and its own structure.

[0082] In some examples, the fluid delivery device 1 can be fixed to the target 200. In some examples, the fluid delivery device 1 can be fixed to the surface of the target 200. For example, the fluid delivery device 1 can be fixed to the abdomen or arm of the target 200. However, this disclosure is not limited to this, and the fixing position of the fluid delivery device 1 can be adjusted according to needs. In some examples, the fluid delivery device 1 can be adhered to the target 200. In some examples, the fluid delivery device 1 can also be bound to the target 200 by straps.

[0083] In some examples, referring to Figure 1, the fluid delivery device 1 can adhere to the surface of the target 200. In some examples, the fluid delivery device 1 may include an adhesive sheet 11 with adhesive properties. In some examples, the fluid delivery device 1 can adhere to the surface of the target 200 via the adhesive sheet 11. This facilitates the fixation of the fluid delivery device 1 to the target 200.

[0084] In some examples, at least a portion of the fluid delivery device 1 may be placed within the target 200. For example, it may be placed subcutaneously within the target 200. This facilitates the delivery of fluid by the fluid delivery device 1 into the target 200. In some examples, when the fluid delivery device 1 is placed within the target 200, it can deliver fluid into the target 200.

[0085] Figure 2A is a schematic diagram showing the structure of a first embodiment of the fluid transport device 1 according to the present disclosure. Figure 2B is a schematic diagram showing the structure of a second embodiment of the fluid transport device 1 according to the present disclosure.

[0086] In some examples, the fluid delivery device 1 may include a fluid channel 12 and an actuation assembly 13 (see Figure 2A or Figure 2B). In some examples, the fluid channel 12 may store fluid. In some examples, at least a portion of the fluid channel 12 may be placed within the target 200, and the actuation assembly 13 may provide actuation force to deliver fluid into the target 200.

[0087] In some examples, the fluid delivery device 1 may also include a flow-limiting component 14 (see Figure 2A or Figure 2B). In some examples, the flow-limiting component 14 can restrict the flow of fluid in the fluid passage 12. In some examples, the flow-limiting component 14 can be configured to open or close the fluid passage 12. Thus, the direction of fluid flow can be restricted.

[0088] In some examples, the fluid delivery device 1 may include a substrate 15 (see FIG. 2A or FIG. 2B). In some examples, the substrate 15 may be configured to support the fluid channel 12, the actuation component 13, and the flow limiting component 14. In some examples, the fluid channel 12, the actuation component 13, and the flow limiting component 14 may be disposed on the substrate 15.

[0089] In some examples, the side of the substrate 15 furthest from the surface of the target 200 may be provided with a fluid channel 12, an actuation component 13, and a flow-limiting component 14. This reduces the impact of the target 200 on fluid delivery. For example, when the target 200 is a human body, the body temperature can be transferred to the fluid delivery device 1, which may cause the fluid in the fluid channel 12 to expand due to heat, resulting in inaccurate volume of the delivered fluid. By positioning the fluid channel 12, the actuation component 13, and the flow-limiting component 14 as far away from the target 200 as possible, the impact of the human body temperature on the fluid or components can be reduced.

[0090] In some examples, the substrate 15 may be flat. In other examples, the substrate 15 may also be other shapes and structures that facilitate the mounting of components.

[0091] In some examples, referring to Figure 2A or Figure 2B, at least a portion of the fluid channel 12 may extend through the substrate 15. This facilitates the entry of the fluid channel 12 into the target 200.

[0092] In other examples, the fluid channels 12 may also be all located on the same side of the substrate 15.

[0093] In some examples, referring to Figure 2A or Figure 2B, the fluid delivery device 1 may include a fluid passage 12. In some examples, the fluid passage 12 may be configured to store fluid.

[0094] In some examples, the fluid can be pre-stored in the fluid channel 12. This allows the fluid delivery device 1 to deliver the fluid more promptly.

[0095] In some examples, fluid can be added to the fluid delivery device 1. In some examples, fluid can be added to the fluid channel 12.

[0096] In some examples, fluid channel 12 may also be configured to provide a flow path. In some examples, fluid may flow into and / or out of target 200 via fluid channel 12. In some examples, fluid channel 12 may guide fluid into and / or out of target 200.

[0097] In some examples, fluid can be supplied to the fluid delivery device 1 through the fluid channel 12.

[0098] In some examples, the fluid channel 12 may be at least partially located within the target 200. In some examples, the fluid channel 12 may be at least partially located within the body of the target 200. This facilitates the delivery of fluid into the body of the target 200.

[0099] In some examples, referring to Figure 2A, the fluid passage 12 may include a first passage 121. In some examples, fluid may flow through the first passage 121. In some examples, fluid may flow into or out of the fluid delivery device 1 via the first passage 121.

[0100] In some examples, fluid can flow out through one end of the first channel 121 and flow in through the other end of the first channel 121.

[0101] In some examples, at least a portion of the first channel 121 may be placed within the target 200. In some examples, one end of the first channel 121 may be implanted into the target 200.

[0102] In some examples, the fluid outlet end of the first channel 121 can be placed within the target 200. In some examples, fluid can be delivered to the target 200 via the first channel 121.

[0103] In some examples, the first channel 121 can be a tubular structure. In some examples, the inner diameter of the first channel 121 can be from 0.1 mm to 1.5 mm. For example, the inner diameter of the first channel 121 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.5 mm, 0.7 mm, 1 mm, or 1.5 mm, etc. Preferably, the inner diameter of the first channel 121 can be 0.3 mm.

[0104] In some examples, the outer diameter of the first channel 121 can be from 0.2 mm to 2 mm. For example, the outer diameter of the first channel 121 can be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.7 mm, 1 mm, 1.5 mm, or 2 mm, etc. Preferably, the outer diameter of the first channel 121 can be 1 mm.

[0105] In some examples, the first channel 121 can be cylindrical. In some examples, the cross-sectional shape of the first channel 121 can be circular. This helps to disperse the pressure on the first channel 121, thereby reducing the possibility of deformation of the first channel 121.

[0106] In other examples, the first channel 121 may also be prismatic in shape. In some examples, the cross-sectional shape of the first channel 121 may also be square, star-shaped, or other irregular shapes.

[0107] In some examples, the first channel 121 may be made of an elastic material. For example, the first channel 121 may be made of at least one of silicone, rubber, and elastomeric polymers. In this case, the first channel 121 can be easily bent and shaped, thereby increasing the flexibility of the first channel 121 during installation and placement.

[0108] In some examples, the first channel 121 may be made of a biocompatible material. In some examples, the biocompatible material used to make the first channel 121 may include, but is not limited to, medical-grade polyvinyl chloride (PVC), polyethylene (PE), polyether ether ketone (PEEK), polycarbonate (PC), polyetherimide (PEI), polysulfone (PSF), polypropylene (PP), polyurethane (PU), and thermoplastic polyurethane elastomer (TPU).

[0109] Additionally, in some examples, the first channel 121 can be made of a rigid metal. For example, the first channel 121 can be made of at least one of stainless steel (e.g., 304 stainless steel, 316 stainless steel, etc.), titanium alloy, and aluminum. In some examples, the first channel 121 can be made of a rigid non-metallic material. For example, the first channel 121 can be made of at least one of glass, plastic, ceramic composite material, and carbon fiber composite material. In this case, the first channel 121 is less prone to breakage, thereby enabling more stable fluid flow.

[0110] As described above, the fluid delivery device 1 can exert itself onto the target 200 through its own structure. In some examples, when the first channel 121 is made of a rigid material, the fluid delivery device 1 can exert itself onto the target 200 through its own structure. In some examples, the first channel 121 can enter the target 200 by its own rigidity. Thus, the fluid delivery device 1 can exert itself onto the target 200 through its own structure.

[0111] In some examples, the inner wall of the first channel 121 may be coated with a lubricating layer. In some examples, the lubricating layer may be made of polytetrafluoroethylene (PTFE). This allows fluid to flow easily through the first channel 121, thereby helping to prevent the first channel 121 from becoming clogged.

[0112] In some examples, referring to Figure 2A, the fluid passage 12 may include a reservoir 122. In some examples, fluid may flow through the reservoir 122. In some examples, fluid may flow into or out of the fluid delivery device 1 via the reservoir 122.

[0113] In some examples, fluid can flow out from one end of the reservoir 122 and flow in from the other end of the reservoir 122. In some examples, the fluid outflow end of the reservoir 122 can be connected to the fluid inflow end of the first channel 121.

[0114] In some examples, the reservoir 122 may be configured to receive fluid. In some examples, receiving fluid in the reservoir 122 may refer to fluid flowing into the reservoir 122. In some examples, the manner in which the reservoir 122 receives fluid may include at least one of inflow, extrusion, suction, and pumping.

[0115] In some examples, for ease of understanding, the receiving fluid can also be referred to as the replenishing fluid. For example, the fluid received by the reservoir 122 can be referred to as replenishing the fluid to the reservoir 122. The providing fluid can also be referred to as the transporting fluid. For example, the fluid provided by the reservoir 122 can be referred to as transporting the fluid from the reservoir 122 to the target 200.

[0116] In some examples, the reservoir 122 may also be configured to provide fluid. In some examples, providing fluid through the reservoir 122 may refer to fluid flowing out of the reservoir 122, or fluid being discharged from the reservoir 122. In some examples, the fluid flowing out of the reservoir 122 may flow into the first channel 121. In some examples, the fluid in the reservoir 122 may be transported to the target 200 via the first channel 121.

[0117] In some examples, the reservoir 122 can also be configured to store fluid. In some examples, fluid flowing into the reservoir 122 can be stored in the reservoir 122. In some examples, fluid to be delivered to the target 200 can be pre-stored in the reservoir 122.

[0118] In some examples, at least a portion of the reservoir 122 may be located outside the target 200.

[0119] In some examples, the reservoir 122 can be a tubular structure. In some examples, the diameters of the two end portions of the reservoir 122 can be smaller than the diameter of the middle portion. For example, the reservoir 122 can be a spindle-shaped structure. In this case, the actuation component 13 acts on the middle portion with a larger diameter, enabling the middle portion of the reservoir 122 to undergo greater deformation, thereby facilitating the reservoir 122 to provide a preset volume of fluid; when the preset volume of fluid flows into the two end portions with smaller diameters, the fluid velocity increases, enabling the fluid delivery device 1 to provide fluid to the target 200 more promptly, and the fluid can flow a greater distance, thereby facilitating the fluid to flow out of the fluid delivery device 1.

[0120] In other examples, the diameter of the two end portions of the reservoir 122 may be equal to or greater than the diameter of the middle portion.

[0121] In some examples, the reservoir 122 may be made of an elastic material. In this case, since the reservoir 122 supplies fluid by changing its volume through deformation, using an elastic material makes the reservoir 122 more deformable, i.e., easier to increase or decrease its volume, thereby facilitating the supply of fluid. A detailed description of the material of the reservoir 122 can be found in the description of the first channel 121, and will not be repeated here.

[0122] In some examples, the reservoir 122 may have at least one dispensing port. For example, the reservoir 122 may have one, two, or three dispensing ports. In some examples, the dispensing port can be used to replenish fluid to the reservoir 122.

[0123] In some examples, referring to Figure 2A, fluid passage 12 may include a second passage 123. In some examples, fluid may flow through the second passage 123. In some examples, fluid may flow into or out of the fluid delivery device 1 via the second passage 123.

[0124] In some examples, fluid can flow out through one end of the second channel 123 and flow in through the other end of the second channel 123. In some examples, the fluid outflow end of the second channel 123 can be connected to the fluid inflow end of the reservoir 122.

[0125] In some examples, the second channel 123 can be configured to replenish fluid. In some examples, fluid can replenish fluid into the fluid delivery device 1 via the second channel 123. In some examples, fluid can flow into the storage tank 122 via the second channel 123. In some examples, replenishing fluid via the second channel 123 can mean that fluid flows into the second channel 123 and is stored in the second channel 123, or that fluid flows into the storage tank 122 via the second channel 123.

[0126] In other examples, fluid can also be supplied to the fluid delivery device 1 via the first channel 121, or it can be delivered to the target 200 via the second channel 123.

[0127] In some examples, the second channel 123 may be located outside the target 200. This facilitates the replenishment of fluid into the fluid delivery device 1.

[0128] The description of the structure and materials of the second channel 123 can be found in the description of the first channel 121, and will not be repeated here.

[0129] In some examples, fluid channel 12 may include a medicine tank. In some examples, the medicine tank may be configured to pre-store fluid. In some examples, the fluid to be delivered to target 200 can be pre-stored in the medicine tank. This facilitates timely fluid access for target 200.

[0130] In some examples, the volume of the drug reservoir can be larger than the volume of the liquid storage tank 122. This allows for an increase in the storage capacity of the fluid delivery device 1. In other examples, the volume of the drug reservoir can be equal to or smaller than the volume of the liquid storage tank 122.

[0131] In some examples, the drug reservoir can discharge fluid. In some examples, the fluid discharged from the drug reservoir can enter the second channel 123. In some examples, the fluid discharged from the drug reservoir can be transported to the storage tank 122. In some examples, the drug reservoir can be discharged by applying an action to it. For example, the fluid can be discharged by squeezing. In some examples, the volume of fluid discharged from the drug reservoir can be a preset volume.

[0132] In some examples, the fluid delivery device 1 may include a piston. In some examples, the piston may be connected to a medicine tank. In some examples, pressure can be applied to the fluid in the medicine tank by moving the piston to cause the fluid to be discharged from the medicine tank.

[0133] In some examples, when the piston applies a preset pressure to the fluid in the cartridge, the cartridge can discharge a preset volume of fluid. In other examples, the preset pressure and preset volume can be adjusted as needed. In this case, since the volume of fluid discharged from the cartridge is pressure-dependent, adjusting the pressure to a preset pressure allows the cartridge to discharge a preset volume of fluid.

[0134] In some examples, the medicine container may be equipped with a pressure sensor. This allows the pressure of the fluid in the medicine container to be obtained when the piston applies pressure to it.

[0135] In other examples, the sensor in the cartridge can also be a capacitive sensor. In some examples, the volume of remaining fluid in the cartridge can be detected by measuring the capacitance between the piston and the end of the cartridge from which fluid is being discharged.

[0136] In other examples, the fluid delivery device 1 may include a spring. In some examples, the spring may abut against the drug cartridge. In some examples, the spring may apply force to the drug cartridge. In some examples, the drug cartridge may discharge fluid under the action of the spring.

[0137] In other examples, the drug container can also be a vacuum soft bag. In this case, since the drug container is more deformable, its shape can be arbitrarily changed based on the structure of the fluid delivery device 1, thereby helping to improve the space utilization of the fluid delivery device 1 and facilitating its miniaturization.

[0138] In other examples, the medicine container may also have a structure that is generally in the form of a telescopic hose. This facilitates the drainage of fluid from the medicine container.

[0139] In some examples, the drug reservoir may have at least one dispensing port. For example, the drug reservoir may have one, two, or three dispensing ports. In some examples, the dispensing port may be used to replenish fluid to the drug reservoir.

[0140] In some examples, when the medicine tank contains fluid, the pressure of the fluid inside the tank can be maintained within a preset range. In this case, the occurrence of negative pressure or air bubbles due to the emptying of the fluid inside the medicine tank can be reduced, thereby improving the stability of the medicine tank.

[0141] The description of the materials in the medicine storage can be found in the description of the first channel 121, and will not be repeated here.

[0142] In some examples, when the fluid channel 12 has a first channel 121, the first channel 121 can receive, store, and supply fluid to the target 200. In some examples, when the fluid channel 12 has a first channel 121 and a reservoir 122, the reservoir 122 can receive, store, and supply fluid to the first channel 121, and the first channel 121 can receive and supply fluid to the target 200. In some examples, when the fluid channel 12 has a first channel 121, a reservoir 122, and a second channel 123, the second channel 123 can receive and supply fluid to the reservoir 122, the reservoir 122 can receive, store, and supply fluid to the first channel 121, and the first channel 121 can receive and supply fluid to the target 200.

[0143] In some examples, the first channel 121 may be connected to the liquid storage tank 122 (see Figure 2A). In some examples, the first channel 121 may be fixedly connected to the liquid storage tank 122. In some examples, the first channel 121 may be integrally formed with the liquid storage tank 122.

[0144] In some examples, the connection between the first channel 121 and the liquid storage tank 122 can be at least one of fusion welding and bonding.

[0145] In other examples, the first channel 121 may also be detachably connected to the liquid storage tank 122.

[0146] In some examples, the first channel 121 can be connected to any location on the reservoir 122. In some examples, the first channel 121 and the reservoir 122 can be in fluid communication.

[0147] As described above, the first channel 121 may be at least partially placed within the target 200. In some examples, the end of the first channel 121 that is not placed within the target 200 may be connected to the reservoir 122.

[0148] In some examples, the second channel 123 may be connected to the liquid storage tank 122 (see Figure 2A). In some examples, the second channel 123 may be fixedly connected to the liquid storage tank 122. In some examples, the second channel 123 may be integrally formed with the liquid storage tank 122.

[0149] In some examples, the connection between the second channel 123 and the liquid storage tank 122 can be at least one of fusion welding and bonding.

[0150] In other examples, the second channel 123 can also be detachably connected to the reservoir 122.

[0151] In some examples, the second channel 123 can be connected to any location on the reservoir 122. In some examples, the second channel 123 and the reservoir 122 can be in fluid communication.

[0152] In some examples, the first channel 121, the reservoir 122, and the second channel 123 can be integrally formed. In this case, since the first channel 121, the reservoir 122, and the second channel 123 are integrally formed, the gap between the components can be reduced compared to a separate fluid channel 12, thereby reducing the possibility of leakage from the fluid channel 12.

[0153] In some examples, the first channel 121, the reservoir 122, and the second channel 123 can be connected in sequence. Thus, fluid can flow into the reservoir 122 through the second channel 123 and out of the reservoir 122 through the first channel 121; or fluid can flow into the reservoir 122 through the first channel 121 and out of the reservoir 122 through the second channel 123.

[0154] In some examples, the first channel 121, the liquid storage tank 122, and the second channel 123 can be connected end-to-end in sequence. In some examples, the first channel 121 and the second channel 123 can be connected to any position on the liquid storage tank 122. In some examples, the connection method of the first channel 121, the liquid storage tank 122, and the second channel 123 can be at least one of fusion welding and bonding.

[0155] In some examples, the first channel 121 may be connected to the second channel 123. In some examples, the first channel 121 may be connected to the liquid storage tank 122. In some examples, the second channel 123 may be connected to the liquid storage tank 122.

[0156] In some examples, the first channel 121, the reservoir 122, and the second channel 123 may be interconnected. In some examples, the first channel 121, the reservoir 122, and the second channel 123 may be fluidly connected. This provides a path for fluid flow. In some examples, fluid connection may mean that the first channel 121, the reservoir 122, and the second channel 123 are connected, and fluid can flow between the first channel 121, the reservoir 122, and the second channel 123.

[0157] In some examples, the drug reservoir may be in communication with the liquid storage tank 122. In some examples, the drug reservoir may be in fluid communication with the liquid storage tank 122. In some examples, the drug reservoir may be in communication with the liquid storage tank 122 via the second channel 123. In some examples, the drug reservoir, the second channel 123, and the liquid storage tank 122 may be connected sequentially. In some examples, the drug reservoir, the second channel 123, and the liquid storage tank 122 may be integrally formed.

[0158] In some examples, referring to FIG2A, the substrate 15 may include a first fixing part 151, which may be configured to fix the first channel 121.

[0159] In some examples, the first fixing portion 151 may be formed on the substrate 15. In some examples, the first fixing portion 151 may be a protrusion or groove formed on the substrate 15. In some examples, the first fixing portion 151 may have a fixing groove. In some examples, the first channel 121 may be fixed to the fixing groove. In some examples, the number of fixing grooves may be multiple. For example, there may be 2, 4, or 6. Preferably, the first fixing portion 151 may have 2 fixing grooves. This allows for more stable fixing of the first channel 121.

[0160] In some examples, the size of the fixing groove on the first fixing part 151 can be equal to or smaller than the size of the first channel 121. This allows for more stable fixing of the first channel 121. In other examples, the size of the fixing groove can be larger than the size of the first channel 121.

[0161] In other examples, the substrate 15 may not have the first fixing part 151. In some examples, the first channel 121 may be fixed to the substrate 15 by one or more of the following methods: suction, bonding, and fusion welding.

[0162] In some examples, referring to FIG. 2A, the substrate 15 may further include a second fixing portion 152, which may be configured to fix the liquid storage tank 122. In some examples, referring to FIG. 2A, the substrate 15 may include a third fixing portion 153, which may be configured to fix the second channel 123. The descriptions regarding the second fixing portion 152 fixing the liquid storage tank 122 and the third fixing portion 153 fixing the second channel 123 can be found in the descriptions regarding the first fixing portion 151 fixing the first channel 121, and will not be repeated here.

[0163] To facilitate understanding of this disclosure, the following description uses the example of fluid flowing out of the fluid conveying device 1 via the first channel 121 (i.e., the first channel 121 is the liquid outlet channel) and fluid flowing into the fluid conveying device 1 via the second channel 123 (i.e., the second channel 123 is the liquid inlet channel). However, it should be noted that the above definitions are intended to more clearly illustrate this disclosure and should not be construed as limiting this disclosure. The description of this disclosure also applies to the case where the first channel 121 is the liquid inlet channel and the second channel 123 is the liquid outlet channel.

[0164] In some examples, the fluid in fluid channel 12 can be actuated to be delivered into the target 200. In some examples, the fluid can be actuated by actuation force. In some examples, the fluid can be actuated by one or more of squeezing, pushing, suction, and traction.

[0165] In some examples, referring to FIG. 2A, the fluid delivery device 1 may include an actuation component 13. In some examples, the actuation component 13 may be configured to actuate fluid. This enables fluid to flow in the fluid channel 12 and facilitates the inflow or outflow of a predetermined volume of fluid into or out of the reservoir 122. In some examples, the actuation component 13 may be configured to provide actuating force to cause fluid to flow into or out of the reservoir 122. In some examples, the actuation component 13 may actuate fluid in the fluid channel 12 or fluid within the target 200.

[0166] In some examples, the actuation component 13 can act on a fluid. In some examples, the actuation force can act on a fluid. For example, the actuation component 13 can be a piston in the fluid passage 12. Thus, the actuation component 13 can directly actuate the fluid.

[0167] In some examples, the actuation component 13 can act on the fluid channel 12. In some examples, the actuating force can act on the fluid channel 12. In some examples, the fluid channel 12 can actuate the fluid in the fluid channel 12 under the action of the actuating force. Thus, the actuation component 13 can actuate the fluid through the fluid channel 12.

[0168] In some examples, referring to Figure 2A, at least a portion of the actuation component 13 may be detachably connected to the fluid channel 12. This facilitates the actuation component 13 acting on the fluid channel 12.

[0169] In some examples, the actuation force can be configured to increase the pressure in the reservoir 122. This facilitates the outflow of fluid from the reservoir 122.

[0170] In some examples, the actuation force can also be configured to reduce the pressure in the reservoir 122. This facilitates the flow of fluid into the reservoir 122.

[0171] In some examples, the reservoir 122 can be deformed. In some examples, the reservoir 122 can be deformed under the action of an actuation force.

[0172] In some examples, the actuating force can be applied directly to the reservoir 122 to cause it to deform. In some examples, the reservoir 122 can deform to reduce its volume. In some examples, the deformation of the reservoir 122 can be equal to the reduction in volume. In some examples, when the reservoir 122 deforms to reduce its volume, fluid can flow out of the reservoir 122. For example, the reservoir 122 can be recessed towards its interior space to compress the fluid, allowing the fluid to flow out of the reservoir 122 under this compression. This helps to precisely control the volume of fluid flowing out of the reservoir 122.

[0173] In some examples, the reservoir 122 can deform to increase its volume. In some examples, the deformation of the reservoir 122 can be equal to the increased volume. In some examples, when the reservoir 122 deforms to increase its volume, fluid can flow into the reservoir 122. For example, the reservoir 122 can expand toward the external space to draw fluid in, allowing fluid to flow into the reservoir 122 under suction. This helps to precisely control the volume of fluid flowing into the reservoir 122.

[0174] Figure 3A is a schematic diagram showing the actuator 131 according to the present disclosure acting on the liquid storage tank 122 in a first embodiment. Figure 3B is a schematic diagram showing the actuator 131 according to the present disclosure not acting on the liquid storage tank 122 in a first embodiment. Figure 3C is a schematic diagram showing the actuator 131 according to the present disclosure in a second embodiment. Figure 3D is a schematic diagram showing the actuator 131 according to the present disclosure in a third embodiment.

[0175] In some examples, referring to Figure 3A or Figure 3B, the actuation assembly 13 may include an actuator 131. In some examples, the actuator 131 may be configured to actuate fluid. In some examples, the actuator 131 may provide actuating force.

[0176] In some examples, actuator 131 can act on a fluid.

[0177] In some examples, actuator 131 can act on fluid channel 12.

[0178] In some examples, at least a portion of the actuator 131 may be disposed within the fluid channel 12. In some examples, the actuator 131 may actuate the fluid by one or more of squeezing, pushing, sucking, and pulling. For example, referring to FIG3C, the actuator 131 may be a piston disposed in the fluid channel 12, which may deliver fluid by pushing. As another example, when the fluid is magnetic, the actuator 131 may be a magnet disposed outside the fluid channel 12, which may deliver fluid by pulling.

[0179] In some examples, referring to Figure 3A, actuator 131 can act on reservoir 122. In some examples, actuator 131 can actuate reservoir 122. In some examples, reservoir 122 can deform under the action of actuator 131. In some examples, actuator 131 can deform reservoir 122 to decrease or increase its volume.

[0180] In some examples, actuating the reservoir 122 may refer to the reservoir 122 undergoing deformation or being in the process of deformation. In some examples, stopping actuating the reservoir 122 may refer to the reservoir 122 ceasing to deform or not being in the process of deformation. For example, actuating the reservoir 122 may refer to the actuator 131 gradually squeezing or pulling the reservoir 122, and stopping actuating the reservoir 122 may refer to the actuator 131 ceasing to squeeze or pull the reservoir 122. As another example, actuating the reservoir 122 may refer to the reservoir 122 gradually returning to its original shape due to the properties of its material as the actuator 131 moves away from the reservoir 122, and stopping actuating the reservoir 122 may refer to the reservoir 122 having returned to its original shape. It should be noted that, for ease of understanding, in Figure 3C, the reservoir 122 may refer to the portion between the first channel 121 and the second channel 123 where fluid is stored.

[0181] In some examples, referring to Figure 3A or Figure 3B, the actuator 131 may move toward or away from the reservoir 122. In some examples, as the actuator 131 moves toward or away from the reservoir 122, the reservoir 122 may deform, that is, the volume of the reservoir 122 may change.

[0182] In some examples, referring to Figure 3A, the volume of the reservoir 122 can be reduced by recessing the reservoir 122 inward. For example, the actuator 131 can penetrate the reservoir 122 to cause the reservoir 122 to recess inward.

[0183] In some examples, referring to Figure 3B, the volume of the reservoir 122 can be increased by expanding the reservoir 122 outwards. For example, the reservoir 122 returns to its original shape after being dented.

[0184] In some examples, the restoration of the reservoir 122 to its original shape can mean that the reservoir 122 returns to its state at the time of manufacture. In some examples, the reservoir 122 can restore its original shape through its own action, such as through the elasticity of its material. In some examples, the reservoir 122 can also restore its original shape through the action of the actuator 131. For example, the actuator 131 can be connected to the reservoir 122, and when the actuator 131 moves away from the reservoir 122, it can cause the recessed portion of the reservoir 122 to expand outward to restore its original shape.

[0185] In some examples, referring to Figure 3A, the actuator 131 can deform the reservoir 122 through direct contact. For example, the actuator 131 can squeeze or pull the reservoir 122 to deform it.

[0186] In other examples, referring to Figure 3D, the actuator 131 can deform the reservoir 122 in a non-contact manner. For example, the actuator 131 and the reservoir 122 can be made of magnetic materials, thereby enabling the actuator 131 to deform the reservoir 122 without contacting it, based on the principle of like poles repelling or unlike poles attracting.

[0187] In some examples, the reservoir 122 can deform by a preset deformation. In some examples, when the reservoir 122 deforms to a preset deformation, the reservoir 122 can provide or receive a preset volume of fluid. That is, the preset deformation can be equal to the preset volume.

[0188] As described above, the actuator 131 can penetrate the reservoir 122. In some examples, the penetration amount of the actuator 131 can be equal to the deformation of the reservoir 122. In this case, by adjusting the penetration amount of the actuator 131, the volume of fluid supplied by the reservoir 122 can be adjusted.

[0189] In some examples, when actuator 131 actuates the liquid reservoir 122 to deform by a preset amount, actuator 131 may be located in a first preset position (see Figure 3A); when the liquid reservoir 122 returns to its original state, actuator 131 may be located in a second preset position (see Figure 3B). That is, the first preset position can be the position of actuator 131 when the liquid reservoir 122 deforms by a preset amount, and the second preset position can be the position of actuator 131 when the liquid reservoir 122 returns to its original state.

[0190] In some examples, the movement distance of the actuator 131 during the movement from the first preset position to the second preset position or from the second preset position to the first preset position can be a preset distance. In some examples, after moving the preset distance, the actuator 131 can move from the first preset position to the second preset position or from the second preset position to the first preset position. In some examples, the movement of the actuator 131 can be translation or rotation.

[0191] It should be noted that since there can be multiple second preset positions, there can also be multiple preset distances. The size of the preset distance can be set according to requirements. For example, a larger preset distance can be set so that the actuator 131 is far away from the liquid storage tank 122 when in the second preset position, thereby preventing the actuator 131 from accidentally actuating the liquid storage tank 122. In addition, for ease of description, it can be assumed that the actuator 131 can move from the first preset position to the second preset position or from the second preset position to the first preset position after moving the preset distance. The preset angle described later is similar, so it will not be repeated here.

[0192] In some examples, the actuator 131 may be made of at least one of stainless steel, aluminum alloy, polyamide, polyetheretherketone, and titanium alloy. This improves the corrosion resistance and robustness of the actuator 131.

[0193] In some examples, the thickness of actuator 131 can be from 1 mm to 2 mm. For example, the thickness of actuator 131 can be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, or 2 mm, etc. Preferably, the thickness of actuator 131 can be 1.5 mm.

[0194] In some examples, the thickness of the actuator 131 can be the width of the contact surface between the actuator 131 and the reservoir 122. In some examples, the thickness of the actuator 131 can be greater than or equal to the outer diameter of the reservoir 122. This allows the reservoir 122 to make complete contact with the actuator 131, thereby improving the actuation effect of the actuator 131.

[0195] In some examples, referring to FIG. 3A, actuator 131 may have an actuating portion 1311. In some examples, actuator 131 may act on reservoir 122 through actuating portion 1311. In some examples, actuating portion 1311 may actuate reservoir 122. In some examples, at least a portion of actuating portion 1311 may penetrate reservoir 122.

[0196] In some examples, actuator 131 may have a first end 1312 (see Figure 3A). In some examples, actuation force may be applied to the first end 1312 to actuate actuator 131.

[0197] In some examples, the actuator 131 can move in a oscillating manner. In some examples, referring to Figures 3A and 3B, the actuator 131 may have a central fulcrum A. In some examples, the actuator 131 can oscillate about the central fulcrum A. In this case, the torque generated by the actuation force can be increased by increasing the distance between the first end 1312 and the central fulcrum A, thereby reducing the actuation force required to actuate the fluid and helping to extend the service life of the fluid delivery device 1.

[0198] In some examples, referring to Figures 3A and 3B, the fluid delivery device 1 may have a central axis CA. In some examples, the central fulcrum A may be located on the central axis CA.

[0199] In some examples, actuator 131 can be fixed to substrate 15 via central pivot point A.

[0200] In some examples, the first end 1312 may be the end of the actuator 131 near the first rod 132 (described later).

[0201] In some examples, actuator 131 may have a second end 1313 (see Figure 3A). In some examples, an actuating force may be applied to the second end 1313 to actuate actuator 131. In some examples, the second end 1313 may be the end of actuator 131 near the second rod 133 (described later).

[0202] In some examples, the central pivot A may be located between the first end 1312 and the second end 1313. In some examples, the central pivot A, the first end 1312, and the second end 1313 may be located on the same straight line.

[0203] Figure 4A is a schematic diagram showing the first rod 132 of the present disclosure in a third preset position. Figure 4B is a schematic diagram showing the first rod 132 of the present disclosure in a fourth preset position.

[0204] In some examples, the actuation component 13 may include a first lever 132 (see Figure 4A or Figure 4B). In some examples, the first lever 132 may be configured to transmit an actuating force. In some examples, the first lever 132 may receive an actuating force. In some examples, the first lever 132 may provide an actuating force.

[0205] In some examples, referring to Figure 4A, the first lever 132 can act on the actuator 131. In some examples, the first lever 132 can transmit actuating force to the actuator 131. In some examples, the first lever 132 can provide actuating force to the actuator 131. In some examples, the first lever 132 can actuate the actuator 131. In some examples, the first lever 132 can actuate the actuator 131 toward the reservoir 122. In some examples, the first lever 132 can actuate the fluid in the reservoir 122 by actuating the actuator 131. In some examples, the actuation can be by pushing or pulling.

[0206] In some examples, the first lever 132 can act directly on the fluid in the reservoir 122.

[0207] In some examples, the first rod 132 may be movably disposed on the substrate 15. In some examples, the first rod 132 may be a pendulum rod, that is, the movement of the first rod 132 may be a swinging motion. In some examples, the first rod 132 may have a first fulcrum P1 (see Figure 4A or Figure 4B). In some examples, the first rod 132 may swing about the first fulcrum P1. In some examples, the first rod 132 may be fixed to the substrate 15 via the first fulcrum P1.

[0208] In some examples, referring to Figure 4A, when the first rod 132 swings to move the actuator 131 a preset distance, the first rod 132 may be located at a third preset position; referring to Figure 4B, when the first rod 132 resets, the first rod 132 may be located at a fourth preset position. In some examples, during the movement from the third preset position to the fourth preset position or from the fourth preset position to the third preset position, the swing angle of the first rod 132 may be a preset angle.

[0209] In some examples, the third preset position can be the position of the first lever 132 after it pushes the actuator 131 to move the actuator 131 a preset distance, and the fourth preset position can be the position of the first lever 132 after it is reset.

[0210] In some examples, the first lever 132 actuates the actuator 131 to move the actuator 131 a preset distance, which may mean that the first lever 132 and the first retainer 171 (described later) jointly actuate the actuator 131 to move the preset distance, or the first lever 132 actuates the actuator 131 to move the preset distance.

[0211] In some examples, the joint actuation of actuator 131 by the first lever 132 and the first retainer 171 to move actuator 131 a preset distance can mean that actuator 131 is first moved a certain distance by the first lever 132, and then moved a certain distance by the first retainer 171. The sum of the distances actuated by the first lever 132 and the first retainer 171 is the preset distance. In this case, when the first lever 132 is in the third preset position, actuator 131 is not in the first preset position.

[0212] In some examples, the first lever 132 actuating the actuator 131 to move a preset distance may mean that the first lever 132 actuates the actuator 131 to move a preset distance only. In this case, when the first lever 132 is in the third preset position, the actuator 131 is in the first preset position.

[0213] For ease of description, it can be assumed that after the first rod 132 swings at a preset angle, the actuator 131 can move a preset distance.

[0214] Figure 5A is a schematic diagram showing the second rod 133 of the present disclosure in a third preset position. Figure 5B is a schematic diagram showing the second rod 133 of the present disclosure in a fourth preset position.

[0215] In some examples, referring to Figure 5A or Figure 5B, the actuation assembly 13 may include a second rod 133. The description of the second rod 133, the second fulcrum P2, and the principle of the second rod 133 actuating the actuator 131 can be found in the description of the first rod 132. The following description only focuses on the differences between the second rod 133 and the first rod 132; identical or similar details will not be repeated.

[0216] In some examples, the second lever 133 can actuate the actuator 131 to move away from the reservoir 122. In some examples, the second lever 133 can actuate the actuator 131 to actuate the fluid in the first channel 121 and / or the second channel 123.

[0217] In some examples, the second rod 133 can act directly on the fluid in the first channel 121 and / or the second channel 123.

[0218] In some examples, referring to Figure 5A or Figure 5B, the second rod 133 may have a second fulcrum P2. In some examples, the second rod 133 may swing about the second fulcrum P2. In some examples, the second rod 133 may be fixed to the substrate 15 via the second fulcrum P2.

[0219] In some examples, referring to Figure 2A, the actuation component 13 may include a power source 134. This enables the actuation component 13 to provide actuating force.

[0220] In some examples, power source 134 may be configured to provide actuation force. In some examples, power source 134 may provide actuation force to actuator 131. In some examples, power source 134 may also provide actuation force to first lever 132. In some examples, power source 134 may also provide actuation force to second lever 133. The following description uses the example of power source 134 providing power to first lever 132.

[0221] In some examples, referring to Figure 2A, the power source 134 may include a first power assembly 1341.

[0222] In some examples, the first power assembly 1341 may be configured to actuate the first rod 132. In some examples, the first power assembly 1341 may act on the first rod 132. In some examples, the first power assembly 1341 may provide actuating force to the first rod 132. In some examples, the first rod 132 may swing under the action of the first power assembly 1341. In some examples, the first power assembly 1341 may be connected to the first rod 132.

[0223] In some examples, the first power assembly 1341 can apply actuating force to the actuator 131 via the first lever 132.

[0224] In some examples, the first power assembly 1341 may also be configured to actuate the first valve 141 (described later).

[0225] In some examples, the first power assembly 1341 may be a shape memory metal drive. In some examples, at least a portion of the first power assembly 1341 may be made of shape memory metal material.

[0226] In some examples, shape memory metal materials can expand or contract in response to changes in their own temperature. In some examples, shape memory metal materials can be nickel-titanium alloys.

[0227] The following description uses nickel-titanium alloy as an example of shape memory metal material. That is, by increasing the temperature of the shape memory metal material, it can be made to shrink, and by decreasing the temperature of the shape memory metal material, it can be made to stretch.

[0228] In some examples, the first power assembly 1341 may include a first memory metal wire, a first power source, and a first controller.

[0229] In some examples, the first memory wire can be made of shape memory metal material.

[0230] In some examples, the length of the first shape memory wire can be from 20 mm to 40 mm. For example, the length of the first shape memory wire can be 20 mm, 25 mm, 30 mm, 35 mm, or 40 mm, etc. Preferably, the length of the first shape memory wire can be 30 mm.

[0231] In some examples, the first power source can provide electrical energy to the first memory metal filament.

[0232] In some examples, the first controller can control the shape change of the first memory metal wire. Specifically, since the temperature of the first memory metal wire changes depending on the duration of energization or de-energization, and the magnitude of the current flowing through the first memory metal wire during energization, the first controller can control the first power supply to control the duration of energization or de-energization of the first memory metal wire, and the magnitude of the current flowing through it, thereby controlling the shape change of the first memory metal wire. For example, the energization time can be prolonged or the current increased, causing the first memory metal wire to heat up and shrink.

[0233] In some examples, the first power assembly 1341 can actuate the first rod 132 via a first memory metal wire. In some examples, the first memory metal wire can act on the first rod 132. In some examples, the first memory metal wire can be connected to the first rod 132. In some examples, the first memory metal wire can actuate the first rod 132 by its own contraction or extension.

[0234] In some examples, the first power assembly 1341 may also include a servo motor, an electromagnetic drive mechanism, or other power-providing devices.

[0235] In some examples, referring to Figure 2A, the power source 134 may include a pulley 1343. In some examples, a first memory metal wire may be wound around the pulley 1343. When the length of the first memory metal wire meets the actuation requirements, the space utilization of the first memory metal wire can be improved through the pulley 1343 structure, thereby making the first power assembly 1341 more compact and facilitating the miniaturization of the fluid transport device 1.

[0236] In some examples, see Figure 2A, pulley 1343 may be located to the side of actuator 131.

[0237] In some examples, the first memory metal wire can be disposed on the side of the substrate 15 away from the surface of the target 200. In this case, since the degree of contraction of the first memory metal wire is related to temperature, the effect of the temperature of the target 200 on the first memory metal wire can be reduced, thereby facilitating the normal operation of the fluid transport device 1.

[0238] In some examples, referring to Figure 2A, the power source 134 may include a second power assembly 1342. The description of the structure, materials, and interaction with the second rod 133 of the second power assembly 1342 can be found in the description of the first power assembly 1341, and will not be repeated here.

[0239] In some examples, the second power assembly 1342 may include a second memory metal wire, a second power source, and a second controller. The interaction principle between the second memory metal wire, the second power source, and the second controller, as well as the material and dimensions of the second memory metal wire, can be found in the descriptions of the first power source, the first controller, and the first memory metal wire, and will not be repeated here.

[0240] As described above, referring to FIG. 2A, the fluid delivery device 1 may include a flow-limiting component 14 that can restrict fluid flow. In some examples, restricting fluid flow may refer to limiting at least one of the fluid flow rate, flow velocity, and flow direction. In some examples, the flow-limiting component 14 may restrict the flow of fluid in the fluid channel 12. In some examples, the flow-limiting component 14 may compress the fluid channel 12 to restrict fluid flow.

[0241] In some examples, the flow limiting component 14 can be configured to open or close the first channel 121 and / or the second channel 123. In this case, controlling the opening and closing of the first channel 121 and the second channel 123 by the flow limiting component 14 can help to make the fluid flow along the desired path.

[0242] In some examples, the flow limiting component 14 can restrict the flow of fluid in the first channel 121. In some examples, the flow limiting component 14 can also restrict the flow of fluid in the second channel 123.

[0243] In some examples, the actuation component 13 can provide actuation force in response to the flow limiting component 14 opening the first channel 121 and / or the second channel 123. In this case, by first connecting the reservoir 122 to the first channel 121 and / or the second channel 123, and then providing actuation force through the actuation component 13, the utilization rate of the actuation force can be improved.

[0244] In some examples, the flow restrictor 14 may include a valve disposed in the flow path of the fluid in the first channel 121 and / or the second channel 123. In some examples, the flow restrictor 14 may act on the first channel 121 and / or the second channel 123 to close or open the flow path of the fluid.

[0245] In some examples, referring to FIG2A, the flow restrictor 14 may include a first valve 141. In some examples, the first valve 141 may be located on the fluid outflow side of the fluid delivery device 1. In some examples, the first valve 141 may be located in the fluid flow path of the first channel 121.

[0246] In some examples, the first valve 141 may be fitted onto the first fixing portion 151. That is, the first valve 141 may surround the first fixing portion 151. Specifically, the first valve 141 may have an annular structure that matches the first fixing portion 151. This helps the first fixing portion 151 to restrict the movement path of the first valve 141.

[0247] In some examples, the mating of the first valve 141 with the first fixing part 151 may mean that the size of the first valve 141 is equal to or slightly larger than the size of the first fixing part 151. For example, when the lateral dimension of the first valve 141 is equal to or slightly larger than the lateral dimension of the first fixing part 151, the first valve 141 can move relative to the first fixing part 151 in the longitudinal direction. In this case, a space for the first valve 141 to move can be formed between the first valve 141 and the first fixing part 151 in the longitudinal direction.

[0248] In some examples, the first valve 141 may be configured to control fluid flow within the first channel 121.

[0249] In some examples, the first valve 141 may switch states in response to actuation of the first power assembly 1341. In some examples, the first valve 141 may also switch states in response to actuation of the first rod 132. In some examples, the first valve 141 may also switch states in response to fluid flow.

[0250] In some examples, the first valve 141 can be an active valve or a passive valve.

[0251] In some examples, the first valve 141 can be either a one-way valve or a two-way valve.

[0252] In some examples, the first valve 141 may be at least one of a gate valve, check valve, non-return valve, globe valve, ball valve, and diaphragm valve. Preferably, the first valve 141 may be a gate valve.

[0253] In some examples, the first valve 141 may include both an open and a closed state; that is, the first valve 141 may have an open state and a closed state. In some examples, the open state may refer to the state of the first valve 141 when fluid can flow into or out of the reservoir 122 via the first channel 121. In some examples, the closed state may refer to the state of the first valve 141 when fluid cannot flow into or out of the reservoir 122 via the first channel 121.

[0254] In some examples, referring to Figure 2A, the first valve 141 may include a first opening / closing element 1411, which may be configured to control the first valve 141 to open or close.

[0255] In some examples, referring to Figure 4A, when the first valve 141 is in the open state, the first opening / closing element 1411 can be located in the fifth preset position; referring to Figure 4B, when the first valve 141 is in the closed state, the first opening / closing element 1411 can be located in the sixth preset position. In some examples, the first opening / closing element 1411 can move from the fifth preset position to the sixth preset position to switch the first valve 141 from the open state to the closed state; the first opening / closing element 1411 can move from the sixth preset position to the fifth preset position to switch the first valve 141 from the closed state to the open state. In some examples, the fifth preset position can be the position of the first opening / closing element 1411 after the first valve 141 is opened, and the sixth preset position can be the position of the first opening / closing element 1411 after the first valve 141 is closed.

[0256] In some examples, since the first opening and closing element 1411 can continue to move after the first valve 141 is opened, there can be multiple fifth preset positions.

[0257] In some examples, when the first opening / closing member 1411 is in the fifth preset position, the first opening / closing member 1411 can not compress the first channel 121, and the first channel 121 can return to its original state. Thus, the first valve 141 can be opened.

[0258] In some examples, when the first opening / closing member 1411 is in the sixth preset position, the first opening / closing member 1411 can compress the first channel 121 to deform it. In some examples, under the compression of the first opening / closing member 1411, the inner walls of the first channel 121 can fit together to seal the internal space. Thus, the first valve 141 can be closed.

[0259] In some examples, the first channel 121 can be gradually compressed as the first opening / closing element 1411 moves from the fifth preset position to the sixth preset position. In this case, by controlling the moving distance of the first opening / closing element 141, the degree of compression of the first channel 121 can be controlled, thereby controlling the degree of restriction of the fluid in the first channel 121 by the first valve 141.

[0260] In some examples, the first valve 141 may be a knife gate valve, and the first opening / closing element 1411 may be the gate of the knife gate valve. In some examples, the height of the gate of the knife gate valve may be 2 mm to 4 mm. For example, it may be 2 mm, 2.5 mm, 3 mm, 3.5 mm, or 4 mm. Preferably, the height of the gate of the knife gate valve may be 3 mm. In some examples, the first opening / closing element 1411 may be made of at least one of carbon steel and stainless steel.

[0261] In some examples, referring to FIG2A, the first valve 141 may have a first engagement portion 1412. In some examples, the first engagement portion 1412 may be located at the end of the first valve 141 near the first rod 132. In some examples, the first rod 132 may have a first mating portion 1321. In some examples, the first engagement portion 1412 may mate with the first mating portion 1321. In some examples, the contour of the first engagement portion 1412 may be similar to or the same as the contour of the first mating portion 1321.

[0262] In some examples, referring to Figure 2A, the outlines of the first engagement portion 1412 and the first mating portion 1321 can be arc-shaped. In this case, since the direction of the force exerted by the first rod 132 on the first opening / closing member 1411 changes with the swing of the first rod 132, the arc-shaped structure of the first engagement portion 1412 and the first mating portion 1321 can increase the component of the force exerted by the first rod 132 in the direction of movement of the first valve 141 (or the first opening / closing member 1411), thereby helping to reduce energy consumption.

[0263] In some examples, referring to Figure 2A, the flow restrictor 14 may include a second valve 142. In some examples, the second valve 142 may be located on the fluid inflow side of the fluid delivery device 1. In some examples, the second valve 142 may be located on the fluid flow path in the second channel 123. The operating principles of the second valve 142 can be found in the description of the first valve 141, and will not be repeated here.

[0264] In some examples, the first valve 141 and the second valve 142 may both be active valves or both be passive valves. In some examples, the first valve 141 and the second valve 142 may also be an active valve and a passive valve (or a passive valve and an active valve), respectively.

[0265] In some examples, the first valve 141 and the second valve 142 can be respectively disposed at both ends of the liquid storage tank 122 (see Figure 2A). In some examples, the first valve 141 and the second valve 142 can be respectively disposed in the first channel 121 and the second channel 123. In some examples, the first valve 141 can be disposed at any position in the first channel 121, for example, disposed at a position in the first channel 121 near the liquid storage tank 122; the second valve 142 can be disposed at any position in the second channel 123, for example, disposed at a position in the second channel 123 near the liquid storage tank 122.

[0266] As described above, the first channel 121 can be connected to the liquid storage tank 122. In some examples, the first channel 121 can be connected to the liquid storage tank 122 via a first valve 141. As described above, the second channel 123 can be connected to the liquid storage tank 122. In some examples, the second channel 123 can be connected to the liquid storage tank 122 via a second valve 142.

[0267] In some examples, the second valve 142 may include a second opening / closing element 1421, which can be configured to control the opening or closing of the second valve 142. The principle by which the second opening / closing element 1421 controls the opening or closing of the second valve 142 can be found in the description of the first opening / closing element 1411, and will not be repeated here.

[0268] In some examples, the second valve 142 may have a second engagement portion 1422. In some examples, the second rod 133 may have a second mating portion 1331. The mating relationship and working principle of the second engagement portion 1422 and the second mating portion 1331 can be found in the relevant descriptions of the first engagement portion 1412 and the first mating portion 1321, and will not be repeated here.

[0269] In other examples, when the first valve 141 does not switch states in response to the push of the first rod 132, the first valve 141 may not have the first engagement portion 1412, the first rod 132 may not have the first mating portion 1321, and the second valve 142 is similar.

[0270] Figure 6A is a schematic diagram showing the fluid supply to the reservoir 122 when the valve according to the example of this disclosure is a passive valve. Figure 6B is a schematic diagram showing the fluid receiving in the reservoir 122 when the valve according to the example of this disclosure is a passive valve.

[0271] As described above, the first valve 141 and / or the second valve 142 can also be passive valves. In some examples, the first valve 141 and / or the second valve 142 can be check valves.

[0272] In some examples, see Figure 6A, when fluid is supplied to the reservoir 122, the pressure of the fluid in the reservoir 122 increases, thereby opening the first valve 141, moving the first opening / closing element 1411 to the fifth preset position, while simultaneously inhibiting the opening of the second valve 142, with the second opening / closing element 1421 held in the sixth preset position.

[0273] In some examples, see Figure 6B, when the reservoir 122 receives fluid, the pressure of the fluid in the reservoir 122 decreases, which can open the second valve 142. The second opening and closing element 1421 moves to the fifth preset position, while the opening of the first valve 141 can be suppressed, and the first opening and closing element 1411 is held in the sixth preset position.

[0274] Figure 7 is a schematic diagram illustrating the first limiting portion 1413 involved in the example of this disclosure.

[0275] In some examples, see Figure 7, the first valve 141 may have a first limiting portion 1413.

[0276] In some examples, the first limiting portion 1413 may be configured to limit the position of the first valve 141. In some examples, the first limiting portion 1413 may be disposed on the first opening / closing member 1411. In some examples, the size of the first limiting portion 1413 may be equal to or slightly larger than the size of the first channel 121.

[0277] In some examples, the first limiting portion 1413 may be a guide rail structure. In some examples, the first limiting portion 1413 may extend along the moving direction of the first opening / closing member 1411. In some examples, the first opening / closing member 1411 may move along the path limited by the first limiting portion 1413.

[0278] In some examples, the first channel 121 may pass through the first limiting portion 1413. In some examples, the first opening / closing member 1411 may move relative to the first channel 121 and along the guide path of the first limiting portion 1413.

[0279] In some examples, the second valve 142 may have a second limiting portion. In some examples, the second limiting portion may be configured to restrict the position of the second valve 142. For a description of the second limiting portion, please refer to the description of the first limiting portion 1413, which will not be repeated here.

[0280] In some examples, the first power assembly 1341 can actuate the first opening / closing member 1411 from a sixth preset position to a fifth preset position (i.e., the first valve 141 opens). In some examples, the first power assembly 1341 can actuate the actuator 131 to move the actuator 131 from a second preset position to a first preset position.

[0281] In some examples, the first power assembly 1341, the first valve 141, and the actuator 131 can be linked. In some examples, the first power assembly 1341 can open the first valve 141 and cause the actuator 131 to act on the reservoir 122. Specifically, in response to the first power assembly 1341 providing actuation force, the first valve 141 can open, and the actuator 131 can act on the reservoir 122.

[0282] In some examples, during the actuation of the first power assembly 1341, the first opening / closing member 1411 can move from a sixth preset position to a fifth preset position, and the actuator 131 can move from a second preset position to a first preset position. That is, after providing actuation force, the first power assembly 1341 can open the first valve 141, simultaneously actuating the actuator 131 to move a preset distance and compress the liquid storage tank 122, ultimately causing the liquid storage tank 122 to deform by a preset amount. In this case, the actuation of the first power assembly 1341 enables the liquid storage tank 122 to provide a preset volume of fluid.

[0283] In some examples, the first lever 132 can transmit the actuating force provided by the first power assembly 1341. In this case, the lever structure formed by the first lever 132 can increase the torque generated by the actuating force by increasing the lever arm, thereby reducing the energy consumption of the fluid conveying device 1 and extending its service life.

[0284] In some examples, referring to Figure 4A, the first power assembly 1341 can actuate the first lever 132 to move from a fourth preset position to a third preset position. In some examples, the first lever 132 can actuate the first opening / closing member 1411 to move from a sixth preset position to a fifth preset position. In some examples, the first lever 132 can actuate the actuator 131 to move the actuator 131 from a second preset position to a first preset position.

[0285] In some examples, the first power assembly 1341, the first lever 132, the first valve 141, and the actuator 131 can be linked together. In some examples, the first power assembly 1341 can actuate the first lever 132, thereby opening the first valve 141 and causing the actuator 131 to act on the liquid reservoir 122. Specifically, in response to the actuation force provided by the first power assembly 1341, the first lever 132 can move from a fourth preset position to a third preset position, and during the movement of the first lever 132, the first valve 141 can be opened, and the actuator 131 can act on the liquid reservoir 122.

[0286] In some examples, during the movement of the first lever 132 from the fourth preset position to the third preset position, the first opening / closing member 1411 can move from the sixth preset position to the fifth preset position, and the actuator 131 can move from the second preset position to the first preset position. That is, after swinging a preset angle, the first lever 132 can push and open the first valve 141, while simultaneously pushing the actuator 131 to move a preset distance and squeeze the liquid storage tank 122, causing the liquid storage tank 122 to deform by a preset amount. In this case, the actuation of the first power component 1341 enables the liquid storage tank 122 to provide a preset volume of fluid.

[0287] It should be noted that due to the characteristics of shape memory metal materials, the actuating force gradually decreases, which in turn causes the swing angle of the first rod 132 to gradually decrease. Therefore, as the fluid conveying device 1 is used, the third preset position can change. To ensure that the first rod 132 can open the first valve 141, the preset angle can be set to a larger value, which helps to avoid the situation where the first valve 141 cannot be opened due to the swing angle of the first rod 132 being too small. The same applies to the second rod 133 and the second valve 142.

[0288] In some examples, the second power assembly 1342 can actuate the second opening / closing member 1421 from a sixth preset position to a fifth preset position (i.e., the second valve 142 opens). In some examples, the second power assembly 1342 can actuate the actuator 131 to move the actuator 131 from a first preset position to a second preset position.

[0289] In some examples, the second power assembly 1342, the second valve 142, and the actuator 131 can be linked. In some examples, the second power assembly 1342 can open the second valve 142 and restore the reservoir 122 to its original state. Specifically, in response to the second power assembly 1342 providing actuation force, the second valve 142 can open, and the reservoir 122 can return to its original state.

[0290] In some examples, during the actuation of the second power assembly 1342, the second opening / closing member 1421 can move from a sixth preset position to a fifth preset position, and the actuator 131 can move from a first preset position to a second preset position. That is, after providing actuation force, the second power assembly 1342 can open the second valve 142, simultaneously actuating the actuator 131 to move a preset distance away from the liquid storage tank 122, and ultimately restoring the liquid storage tank 122 to its original state. In this case, the actuation of the second power assembly 1342 enables the liquid storage tank 122 to receive a preset volume of fluid.

[0291] In some examples, the second lever 133 can transmit the actuating force provided by the second power assembly 1342. In this case, the lever structure formed by the second lever 133 can increase the torque generated by the actuating force by increasing the lever arm, thereby reducing the energy consumption of the fluid conveying device 1 and extending its service life.

[0292] In some examples, referring to Figure 5A, the second power assembly 1342 can actuate the second lever 133 to move from a fourth preset position to a third preset position. In some examples, the second lever 133 can actuate the second opening / closing member 1421 to move from a sixth preset position to a fifth preset position. In some examples, the second lever 133 can actuate the actuator 131 to move the actuator 131 from a first preset position to a second preset position.

[0293] In some examples, the second power assembly 1342, the second lever 133, the second valve 142, and the actuator 131 can be linked. In some examples, the second power assembly 1342 can actuate the second lever 133 to open the second valve 142 and restore the liquid reservoir 122 to its original state. Specifically, in response to the actuation force provided by the second power assembly 1342, the second lever 133 can move from a fourth preset position to a third preset position, and during the movement of the second lever 133, the second valve 142 can be opened, and the liquid reservoir 122 can be restored to its original state.

[0294] In some examples, during the movement of the second lever 133 from the fourth preset position to the third preset position, the second opening / closing member 1421 can move from the sixth preset position to the fifth preset position, and the actuator 131 can move from the first preset position to the second preset position. That is, after swinging a preset angle, the second lever 133 can push and open the second valve 142, while simultaneously pushing the actuator 131 to move a preset distance away from the liquid storage tank 122, so that the liquid storage tank 122 returns to its original state. In this case, the actuation of the second power component 1342 enables the liquid storage tank 122 to receive a preset volume of fluid.

[0295] It should be noted that when the fluid conveying device 1 has only the first channel 121, or only the first channel 121 and the liquid storage tank 122, the actuation component 13 may not have the second rod 133 and the second power component 1342, and the flow limiting component 14 may not have the second valve 142.

[0296] In some examples, the flow-limiting component 14 can alternately open the first channel 121 and the second channel 123. That is, when the first channel 121 is open, the second channel 123 can be closed; when the second channel 123 is open, the first channel 121 can be closed. In this case, by alternately opening the first channel 121 and the second channel 123, fluid can flow into or out of the reservoir 122 through one of the first channel 121 and the second channel 123, thereby enabling directional fluid flow.

[0297] In some examples, referring to FIG2A, the fluid delivery device 1 may include a reset assembly 16. In some examples, the reset assembly 16 may be configured to reset the flow limiting assembly 14. In some examples, the reset assembly 16 may push or pull the flow limiting assembly 14.

[0298] In some examples, referring to Figure 2A, the reset assembly 16 may include a first reset element 161.

[0299] In some examples, the first reset member 161 may be configured to switch the state of the first valve 141. In some examples, the first valve 141 may switch its state in response to actuation of the first reset member 161. In some examples, the first reset member 161 may actuate the first valve 141 in response to the first power assembly 1341 ceasing to provide actuation force.

[0300] In some examples, referring to Figure 2A, a first reset member 161 may be disposed on the first valve 141. This facilitates the actuation of the first valve 141 by the first reset member 161.

[0301] As described above, the annular first valve 141 can be sleeved on the first fixing part 151. In some examples, referring to FIG2A, the first reset member 161 can be disposed on the outer periphery of the first valve 141. A column can be formed on the outer periphery of the first valve 141, and the first reset member 161 can be sleeved on the column. This facilitates fixing the position of the first reset member 161.

[0302] In some examples, see Figure 4B, the first reset element 161 can close the first valve 141.

[0303] In some examples, the first valve 141 and the first lever 132 can be linked. In some examples, after the first power assembly 1341 stops providing actuation force, the first reset member 161 can actuate the first valve 141 to close the first valve 141. In some examples, the first reset member 161 can actuate the first lever 132 from a third preset position to a fourth preset position via the first valve 141 to reset the first lever 132.

[0304] In some examples, the first reset member 161 can actuate the first opening / closing member 1411 to move from the fifth preset position to the sixth preset position (i.e., the first valve 141 is closed).

[0305] In some examples, one end of the first reset member 161 may be connected to the first opening / closing member 1411. In some examples, the other end of the first reset member 161 (i.e., the end not connected to the first opening / closing member 1411) may be fixed to the substrate 15.

[0306] In some examples, the first power assembly 1341 can actuate the first lever 132 from a third preset position to a fourth preset position. Specifically, the first power assembly 1341 can extend after power is cut off, thereby actuating the first lever 132 from the third preset position to the fourth preset position.

[0307] In some examples, the first reset element 161 can be one of a coil spring, a suspension spring, or a compression spring. In some examples, the first reset element 161 can also be a servo motor or other power-providing device.

[0308] In some examples, the length of the first reset member 161 can be from 2 mm to 4 mm. For example, it can be 2 mm, 2.5 mm, 3 mm, 3.5 mm, or 4 mm. Preferably, the length of the first reset member 161 can be 3 mm.

[0309] In some examples, the reset assembly 16 may include a second reset member 162 (see Figure 5B). In some examples, the second reset member 162 may be configured to switch the state of the second valve 142. The structure and dimensions of the second reset member 162, and the interaction between the second reset member 162, the second valve 142, and the second power assembly 1342, can be found in the description of the first reset member 161, and will not be repeated here.

[0310] As described above, the flow limiting component 14 can alternately open the first channel 121 and the second channel 123. Specifically, after the first reset member 161 closes the first valve 141, the second rod 133 can open the second valve 142 and actuate the actuator 131 to move to the second preset position so that the liquid storage tank 122 receives fluid; after the liquid storage tank 122 receives a preset volume of fluid, the second reset member 162 can close the second valve 142, and after the second valve 142 is closed, the first rod 132 can open the first valve 141 and actuate the actuator 131 to move to the first preset position so that the liquid storage tank 122 provides fluid; after the liquid storage tank 122 provides a preset volume of fluid, the first reset member 161 can close the first valve 141.

[0311] In some examples, referring to FIG2A, the fluid delivery device 1 may include a retaining assembly 17. In some examples, the retaining assembly 17 may be configured to retain the position of the actuator 131.

[0312] In some examples, referring to Figures 4B or 5B, the retaining component 17 can hold the actuator 131 in a first preset position or a second preset position. This allows the reservoir 122 to supply or receive a preset volume of fluid.

[0313] In some examples, the holding component 17 may be positioned on or near the movement path of the actuator 131. This facilitates the holding component 17 in maintaining the position of the actuator 131.

[0314] In some examples, the retaining component 17 may be detachably or releasably connected to the actuator 131. In some examples, the retaining component 17 may be connected to the actuator 131 by one or more of the following methods: attraction, adhesion, snap-fit, and friction connection. For example, magnets may be provided on the retaining component 17 and the actuator 131 to attract them; adhesive layers may be provided on the retaining component 17 and the actuator 131 to adhere them; the retaining component 17 and the actuator 131 may be snap-fitted by at least one of the following structures: snap-fit, hook, latch, or pin; or the retaining component 17 and the actuator 131 may be a male-female mating structure and may be held together by friction between their surfaces.

[0315] In some examples, retaining component 17 can be configured to provide actuation force. In some examples, retaining component 17 can act on actuator 131. In some examples, retaining component 17 can provide actuation force to actuator 131.

[0316] In some examples, the retaining component 17 can actuate the actuator 131 to move a preset distance. In some examples, the retaining component 17 can actuate the actuator 131 together with the first lever 132 or the second lever 133. In this case, since the shape memory metal material gradually fatigues with increasing use, resulting in a smaller actuating force provided by the power source 134, by providing the actuating force through the retaining component 17, the requirement for the actuating force generated by the shape memory metal material can be reduced, and the energy consumption of the fluid transport device 1 can be reduced.

[0317] In some examples, referring to FIG2A, the retaining component 17 may include a first retainer 171. In some examples, the first retainer 171 may be configured to retain the actuator 131 in a first preset position.

[0318] In some examples, the first retainer 171 can hold the first end 1312 in position. In some examples, the first retainer 171 can hold the first end 1312 in position. In some examples, referring to FIG2A, when the first end 1312 approaches or contacts the first retainer 171, the first retainer 171 can engage the first end 1312 to hold its position. In some examples, when the first end 1312 is engaged with the first retainer 171, the actuator 131 can be located in a first preset position.

[0319] In some examples, referring to Figure 2A, the first retainer 171 may be disposed on the side close to the first end 1312. In some examples, the first retainer 171 may be disposed on the movement path of the first end 1312. Thus, the first retainer 171 can easily hold the position of the first end 1312.

[0320] In some examples, referring to Figure 2A, the first retainer 171 may be positioned below the first end 1312. In this case, the first end 1312 can be brought closer to the first retainer 171 as the first rod 132 pushes the first end 1312 downward.

[0321] Figure 8A is a schematic diagram showing the actuation of the first retainer 171 to the first end 1312 according to the example of this disclosure. Figure 8B is a schematic diagram showing the actuation of the second retainer 172 to the second end 1313 according to the example of this disclosure.

[0322] In some examples, the first retainer 171 can also be configured to actuate the first end 1312.

[0323] In some examples, when the first end 1312 approaches the first retainer 171 (for example, see FIG8A, when the first rod 132 pushes the first end 1312 toward the first retainer 171), the first retainer 171 can provide actuation force to the first end 1312.

[0324] In some examples, referring to Figures 8A and 4A, under the action of the first retainer 171, the first end 1312 can move toward the first retainer 171 until it is connected to the first retainer 171. Specifically, the first end 1312 can move from the position in Figure 8A to the position in Figure 4A.

[0325] In some examples, the first retainer 171 may be fixed to the substrate 15. Thus, the first retainer 171 can more stably hold the position of the first end 1312 and provide actuation force.

[0326] In some examples, the first retainer 171 can be a magnet, and the first end 1312 can be magnetic. Thus, the first retainer 171 can attract the first end 1312. In some examples, the first retainer 171 can be a permanent magnet, for example, at least one of ferrite magnets, neodymium iron boron magnets, and cobalt hard magnets.

[0327] In some examples, the actuator 131 may be made at least partially of a ferromagnetic material. In some examples, the first end 1312 may be made of a ferromagnetic material, and the portion of the actuator 131 other than the first end 1312 may be made of a non-ferromagnetic or weakly magnetic material.

[0328] In other examples, the actuator 131 may also be made of a non-ferromagnetic or weakly magnetic material. In some examples, the first end 1312 may be coated with a ferromagnetic material to magnetically hold the first end 1312 to the first retainer 171. Specifically, the side of the first end 1312 facing the first retainer 171 may be coated with a ferromagnetic material.

[0329] In some examples, retaining component 17 may include a second retainer 172. In some examples, the second retainer 172 may be configured to retain actuator 131 in a second preset position.

[0330] In some examples, the second retainer 172 can be configured to actuate the second end 1313 (see Figures 8B and 5A). The relationship between the second retainer 172 and the second end 1313 can be found in the description of the relationship between the first retainer 171 and the first end 1312, and will not be repeated here.

[0331] In some examples, in response to the first lever 132 providing actuation force, the first valve 141 can open, the first end 1312 can connect to the first retainer 171, and the second end 1313 can be disconnected from the second retainer 172. In some examples, in response to the first lever 132 ceasing to provide actuation force, the first valve 141 can close under the action of the first reset member 161, and the first end 1312 can remain connected to the first retainer 171.

[0332] In some examples, in response to the second lever 133 providing actuation force, the second valve 142 can open, the second end 1313 can connect to the second retainer 172, and the first end 1312 can be disengaged from the first retainer 171. In some examples, in response to the second lever 133 ceasing to provide actuation force, the second valve 142 can close under the action of the second reset member 162, and the second end 1313 can remain connected to the second retainer 172.

[0333] In some examples, when the first end 1312 is connected to the first retainer 171, the first end 1312 can be conductive with the first retainer 171. In some examples, after the power source 134 provides actuation force, the blockage of the first channel 121 can be determined by detecting whether the first end 1312 is conductive with the first retainer 171. Specifically, after the power source 134 provides actuation force, since the actuator 131 can move to the first preset position and provide the reservoir 122 with a preset volume of fluid, if the first channel 121 is blocked, the reservoir 122 will not be able to provide the preset volume of fluid, the reservoir 122 will not be able to continue to deform, and the movement of the actuator 131 will be hindered, which will cause the first end 1312 of the actuator 131 to be unable to connect with the first retainer 171. Thus, the blockage can be determined by the conductivity status.

[0334] In some examples, when the second end 1313 is connected to the second retainer 172, the second end 1313 can be conductive with the second retainer 172. In some examples, after the power source 134 provides actuation force, the blockage of the second channel 123 can be determined by detecting whether the second end 1313 is conductive with the second retainer 172. Specifically, after the power source 134 provides actuation force, since the actuator 131 can move to the second preset position and allow the liquid reservoir 122 to receive a preset volume of fluid, if the second channel 123 is blocked, the liquid reservoir 122 will not be able to receive the preset volume of fluid, the liquid reservoir 122 will not be able to continue to deform, and the movement of the actuator 131 will be hindered, which will cause the second end 1313 of the actuator 131 to be unable to connect with the second retainer 172. Thus, the blockage can be determined by the conductivity status. It should be noted that the above description only applies to the case where the actuator 131 is connected to the liquid storage tank 122. If the actuator 131 is not connected to the liquid storage tank 122, the actuator 131 will not be obstructed when moving to the second preset position. In this case, since the second channel 123 is outside the target 200, it is also convenient to directly obtain the blockage status of the second channel 123.

[0335] In some examples, the first retainer 171 may apply a first retaining force to the first end 1312. In some examples, the second retainer 172 may apply a second retaining force to the second end 1313. In some examples, the first retaining force may be greater than the second retaining force. In this case, since the force exerted by the reservoir 122 on the actuator 131 in the first preset position is greater than the force exerted by the reservoir 122 on the actuator 131 in the second preset position, by making the first retaining force greater than the second retaining force, the first retainer 171 can more stably hold the actuator 131 in the first preset position, thereby helping the reservoir 122 to provide a preset volume of fluid.

[0336] In other examples, the first holding force may also be less than or equal to the second holding force.

[0337] As described above, the first retainer 171 can be configured to actuate the first end 1312. In some examples, the first end 1312 and the first retainer 171 can have a first magnetic attraction distance. In some examples, when the relative distance between the first end 1312 and the first retainer 171 is less than or equal to the first magnetic attraction distance, the first end 1312 can approach the first retainer 171 under the attraction of the first retainer 171 until it connects with the first retainer 171.

[0338] As described above, the first lever 132 and the first retainer 171 can jointly actuate the actuator 131. Specifically, when the first lever 132 moves from the fourth preset position to the third preset position, it can actuate the actuator 131 until the relative distance between the first end 1312 and the first retainer 171 is less than or equal to the first magnetic attraction distance. In this case, by actuating the actuator 131 with the first lever 132 and attracting the first end 1312 with the first retainer 171, the actuator 131 can be moved a preset distance.

[0339] As described above, the actuator 131 can be actuated by the first lever 132 alone. Specifically, when the first lever 132 moves from the fourth preset position to the third preset position, it can actuate the actuator 131 until the first end 1312 is connected to the first retainer 171.

[0340] In some examples, a second magnetic attraction distance may exist between the second end 1313 and the second retainer 172. In some examples, when the relative distance between the second end 1313 and the second retainer 172 is less than or equal to the second magnetic attraction distance, the second end 1313 may approach the second retainer 172 under its attraction until it connects with the second retainer 172. The description of the actuation of the actuator 131 by the second rod 133 and the second retainer 172 can be found in the description of the first rod 132 and the first retainer 171, and will not be repeated here.

[0341] As mentioned above, the first holding force can be greater than the second holding force. In some examples, the first magnetic attraction distance can be greater than the second magnetic attraction distance.

[0342] In other examples, the first magnetic attraction distance may be less than or equal to the second magnetic attraction distance.

[0343] In some examples, the fluid delivery device 1 may include a detection component. This detection component can be configured to detect substances in the first channel 121. This facilitates the detection of the presence of unwanted substances in the first channel 121. For example, when the fluid delivery device 1 is an insulin pump, the unwanted substance could be air.

[0344] In some examples, the detection component can be a capacitor. The capacitor may include plates disposed on both sides of the first channel 121. In this case, since different materials have different dielectric constants, the presence of unwanted materials in the first channel 121 can be detected by detecting the dielectric constant of the material in the first channel 121.

[0345] In other examples, the detection component can also be an optical component. The optical component may include a transmitter and a receiver disposed on either side of the first channel 121. In this case, the light signal emitted by the transmitter can pass through the material in the first channel 121. The receiver can detect the material in the first channel 121 by receiving the light signal. Since different materials have different optical properties (e.g., refractive index and scattering rate), by detecting the optical properties of the material in the first channel 121, it is possible to detect the presence of unwanted material in the first channel 121.

[0346] In other examples, the detection component can also be an ultrasonic component. The ultrasonic component may include a transmitter and a receiver disposed on either side of the first channel 121. In this case, the ultrasonic signal emitted by the transmitter can pass through the material in the first channel 121. The receiver can detect the material in the first channel 121 by receiving the ultrasonic signal. Since different materials have different ultrasonic wave reflection characteristics, by detecting the reflection characteristics of the material in the first channel 121, it is possible to detect whether unwanted material exists in the first channel 121.

[0347] In some examples, the detection component can also be configured to detect the state of the memory wire. Specifically, since the memory wire contracts when current flows through it, the detection component can detect the state of the memory wire (e.g., whether the memory wire is broken) by detecting the magnitude of the current flowing through it or whether current is flowing through it.

[0348] The second embodiment of the fluid conveying device 1 according to the present disclosure example will be described below with reference to FIG. 2B. It should be noted that only the differences between the first embodiment and the second embodiment of the fluid conveying device 1 will be described in detail below. The same structure or parts can be referred to the description of the first embodiment, and will not be repeated.

[0349] As described above, pulley 1343 improves space utilization, thereby facilitating the miniaturization of the fluid delivery device 1. In some examples, referring back to FIG. 2B, at least a portion of pulley 1343 may also be disposed below actuator 131. In this case, shape memory wires (e.g., first and second shape memory wires) can extend below actuator 131 via pulley 1343. Compared to being disposed above actuator 131, the lower part of actuator 131 has a larger accommodating space due to the fewer components disposed below actuator 131, thereby accommodating longer shape memory wires and increasing the upper limit of the actuation force that can be provided.

[0350] It should be noted that, since the pulley 1343 itself has a certain width, even if the pulley 1343 is not entirely located below the actuator 131, the memory metal wire can still extend below the actuator 131. Furthermore, it is understood that by setting the pulley 1343, a longer memory metal wire can be installed within a limited space. Therefore, by changing the position, number, and other parameters of the pulley 1343, the upper limit of the actuation force provided by the memory metal wire can be changed. In some examples, the position, number, and other parameters of the pulley 1343 can also be selected based on the position of other components, the required actuation force, and other factors; this disclosure does not impose further limitations on this.

[0351] As described above, the engagement of the first joint 1412 with the first mating part 1321 helps reduce energy consumption. In some examples, referring to FIG2B, the first joint 1412 may be formed as a plane (or it can be understood that the first valve 141 does not have the first joint 1412). The first mating part 1321 may be hemispherical, protruding toward the first valve 141. In this case, when the first rod 132 swings, the hemispherical first mating part 1321 rolls along the first joint 1412, and the direction of the force exerted by the first rod 132 on the first valve 141 is always parallel to the direction of movement of the first opening / closing member 1411, thereby improving mechanical efficiency and reducing energy consumption. The second joint 1422 and the second mating part 1331 are similar and will not be described again here.

[0352] In some examples, referring to FIG2B, the first reset member 161 may also be disposed inside the first valve 141. In some examples, the first reset member 161 may be located between the first valve 141 and the first fixing part 151. Specifically, a space for the first valve 141 to move may be formed between the first valve 141 and the first fixing part 151, and the first reset member 161 may be disposed in the space for the first valve 141 to move. In this case, by utilizing the space for the first valve 141 to move, the compactness of the structure can be improved without affecting the movement of the first valve 141, thereby contributing to the miniaturization of the fluid conveying device 1. The second reset member 162 is similar and will not be described in detail here.

[0353] As described above, the first retainer 171 can hold the position of the first end 1312. In some examples, the first retainer 171 can indirectly hold the position of the first end 1312. In some examples, the first end 1312 and the second end 1313 can be linked. In some examples, referring to FIG2B, when the second end 1313 approaches or contacts the first retainer 171, the first retainer 171 can connect the second end 1313 to hold the position of the second end 1313, thereby holding the position of the first end 1312. In some examples, when the second end 1313 is connected to the first retainer 171, the actuator 131 can be located in a first preset position.

[0354] In some examples, referring to Figure 2B, the first retainer 171 may be located on the side near the second end 1313. In some examples, the first retainer 171 may be located on the movement path of the second end 1313. This allows the first retainer 171 to hold the position of the second end 1313, thereby holding the position of the first end 1312.

[0355] In some examples, referring to Figure 2B, the first retainer 171 may be positioned above the second end 1313. In this case, compared to positioning it below the first end 1312, the structure can be made more compact, which helps to miniaturize the fluid delivery device 1.

[0356] In some examples, there may be multiple first retainers 171. For example, there may be two first retainers 171. One first retainer 171 may be located near and below the first end 1312, and the other first retainer 171 may be located near and above the second end 1313.

[0357] For a description of the second retainer 172 in the second embodiment of the fluid conveying device 1, please refer to the description of the first retainer 171 in the second embodiment, which will not be repeated here.

[0358] Figure 9A is a schematic diagram showing the puncture mechanism 22 entering the target 200 in a first embodiment of the application component 2 according to the present disclosure. Figure 9B is a schematic diagram showing the puncture mechanism 22 exiting the target 200 in a first embodiment of the application component 2 according to the present disclosure.

[0359] As described above, the fluid delivery device 1 can be applied to the target 200 by external factors. This disclosure also provides a fluid delivery system 100 including the fluid delivery device 1. The fluid delivery system 100 may further include an application component 2. In some examples, the application component 2 may be configured to apply at least a portion of the fluid delivery device 1 to the target 200. That is, the fluid delivery device 1 can be applied to the body surface of the target 200 via the application component 2. In some examples, the application component 2 may place at least a portion of the fluid channel 12 under the skin of the target 200.

[0360] In some examples, the applying component 2 may include a drive mechanism 21 (see Figures 9A and 9B). In some examples, the drive mechanism 21 may be configured to provide a driving force.

[0361] In some examples, the drive mechanism 21 may act on at least a portion of the fluid channel 12 and / or the puncture mechanism 22 (described later).

[0362] In other examples, the application component 2 may not include the drive mechanism 21, and the driving force acting on the fluid channel 12 and / or the puncture mechanism 22 may be provided by external factors. For example, the driving force provided by external factors may be power provided by the device or human labor.

[0363] The following description takes the action of the drive mechanism 21 on the first channel 121 as an example.

[0364] In some examples, the drive mechanism 21 can drive the first channel 121. In some examples, the drive mechanism 21 can drive the first channel 121 to move toward the target 200. In some examples, the drive mechanism 21 can drive the first channel 121 to enter and be placed under the skin of the target 200.

[0365] In some examples, the drive mechanism 21 may include a drive source 211 (see Figures 9A and 9B). In some examples, the drive source 211 may be configured to provide driving force. In some examples, the number of drive sources 211 may be one or more.

[0366] In some examples, the drive source 211 can store driving force. In some examples, the driving force of the drive source 211 can be stored before the fluid delivery device 1 leaves the factory. In some examples, the driving force of the drive source 211 can also be stored by the user before using the fluid delivery device 1. In some examples, the drive source 211 can be a spring. For example, it can be a tension spring or a torsion spring.

[0367] In other examples, the drive source 211 may also be a servo motor or other power-providing device.

[0368] In some examples, one end of the drive source 211 may be connected to the first channel 121. In some examples, the other end of the drive source 211 may be fixed to the substrate 15 or to the housing of the fluid delivery device 1.

[0369] In some examples, referring to Figures 9A and 9B, the drive mechanism 21 may include a transmission element 212. In some examples, the transmission element 212 may be configured to change the direction of the driving force.

[0370] In some examples, transmission element 212 may be configured to transmit driving force. In some examples, transmission element 212 may receive driving force from drive source 211. In some examples, transmission element 212 may provide driving force to first channel 121.

[0371] In some examples, the drive source 211 can be connected to the first channel 121 via the transmission element 212.

[0372] In some examples, the application component 2 may include a puncture mechanism 22 (see Figures 9A and 9B). In some examples, the puncture mechanism 22 may be configured to puncture the subcutaneous tissue of the target 200. In some examples, the puncture mechanism 22 may carry at least a portion of the fluid channel 12 and puncture the subcutaneous tissue of the target 200. This facilitates the placement of the fluid channel 12 subcutaneously in the target 200. In some examples, the puncture mechanism 22 may carry a first channel 121 and puncture the subcutaneous tissue of the target 200.

[0373] In some examples, the direction in which the puncture mechanism 22 is inserted into the subcutaneous tissue of the target 200 can form an angle with the surface of the target 200. In some examples, the angle can be from 5 degrees to 85 degrees. For example, it can be 30 degrees, 40 degrees, 60 degrees, or 80 degrees. In this case, by inserting the puncture mechanism 22 obliquely into the subcutaneous tissue of the target 200, it can help suppress inflammation or crusting of the target 200.

[0374] In other examples, the direction in which the puncture mechanism 22 penetrates the subcutaneous tissue of the target 200 may also be perpendicular to the surface of the target 200.

[0375] In some examples, the first channel 121 may accommodate the puncture mechanism 22. In some examples, the first channel 121 may be fitted over the puncture mechanism 22.

[0376] In some other examples, the first channel 121 may be accommodated within the puncture mechanism 22. In some examples, the puncture mechanism 22 may be fitted over the first channel 121.

[0377] In other examples, when the first channel 121 is made of a rigid material, the fluid delivery device 1 may not include the puncture mechanism 22, and the first channel 121 may penetrate the subcutaneous tissue of the target 200 by the rigidity of its own material.

[0378] In some examples, the puncture mechanism 22 may have a sharp object. In some examples, the first channel 121 may accommodate at least a portion of the sharp object.

[0379] In other examples, the first channel 121 may also be accommodated in a sharp object. In some examples, the sharp object may have a receiving groove extending along the length of the sharp object. In some examples, at least a portion of the first channel 121 may be accommodated in the receiving groove.

[0380] In some examples, the drive mechanism 21 can act on the puncture mechanism 22. In some examples, the drive mechanism 21 can drive the puncture mechanism 22. In some examples, the drive mechanism 21 can drive the puncture mechanism 22 toward the target 200. In some examples, the drive mechanism 21 can also drive the puncture mechanism 22 away from the target 200. In some examples, the drive mechanism 21 can drive the puncture mechanism 22 to penetrate the subcutaneous tissue of the target 200 and drive the puncture mechanism 22 away from the target 200 to withdraw the puncture mechanism 22 from the subcutaneous tissue of the target 200. In some examples, the drive mechanism 21 can be connected to the puncture mechanism 22.

[0381] In some examples, the puncture mechanism 22 can carry the first channel 121 to penetrate the subcutaneous tissue of the target 200. In some examples, after the puncture mechanism 22 penetrates the subcutaneous tissue of the target 200, the first channel 121 can be positioned subcutaneously.

[0382] In some examples, the drive source 211 can drive the puncture mechanism 22 toward and / or away from the target 200 by providing a driving force to the puncture mechanism 22.

[0383] As described above, the number of drive sources 211 can be one or more. For example, when there is one drive source 211, one drive source 211 can drive the puncture mechanism 22 to move toward the target 200 and drive the puncture mechanism 22 to move away from the target 200. As another example, when there are two drive sources 211, one drive source 211 can drive the puncture mechanism 22 to move toward the target 200, and the other drive source 211 can drive the puncture mechanism 22 to move away from the target 200.

[0384] In some examples, the transmission element 212 can provide driving force to the puncture mechanism 22.

[0385] In some examples, the drive source 211 can be connected to the puncture mechanism 22 via the transmission 212.

[0386] In some examples, the applying component 2 may include a guiding mechanism 23 (see Figures 9A and 9B). In some examples, the guiding mechanism 23 may be configured to provide a guiding path. In some examples, the guiding mechanism 23 may guide the first channel 121. In some examples, the first channel 121 may move along the guiding path. In some examples, at least a portion of the first channel 121 may be movably connected to a guide rail.

[0387] In some examples, the guide mechanism 23 may extend toward the surface of the target 200. In some examples, the guide mechanism 23 may be a guide rail.

[0388] In some examples, the applying component 2 may include a locking mechanism 24 (see Figure 15A, described later). In some examples, the locking mechanism may be configured to lock the drive mechanism 21 before the target 200 uses the fluid delivery device 1. In some examples, locking the drive mechanism 21 may mean preventing the accumulated drive force of the drive mechanism 21 from being released. In some examples, the locking mechanism may release the drive mechanism 21, after which the drive mechanism 21 may release the accumulated drive force.

[0389] The following description uses the application component 2, which includes a drive mechanism 21 and a puncture mechanism 22, as an example.

[0390] In some examples, referring to Figure 9A, the transmission element 212 can be two connecting blocks and two connecting rods. In some examples, one end of each connecting rod can be movably connected to one of the two connecting blocks, and the other end of both connecting rods can be movably connected to the puncture mechanism 22.

[0391] In some examples, the drive source 211 can be a tension spring. In some examples, the two ends of the tension spring can be fixed to two connecting blocks respectively.

[0392] In some examples, referring to Figure 9A, the tension spring can be in a compressed state when the locking mechanism locks the drive mechanism 21. In some examples, the puncture mechanism 22 can be manually inserted into the subcutaneous tissue of the target 200 along the first direction D1.

[0393] In some examples, referring to Figure 9B, after the puncture mechanism 22 is manually inserted subcutaneously into the target 200, the locking mechanism can release the drive mechanism 21, and the tension spring can extend and provide a driving force, which can be an axial force. In some examples, the tension spring can push two connecting blocks to move in opposite directions along a third direction D3' and D3" respectively. The two connecting blocks pull the puncture mechanism 22 away from the target 200 along a second direction D2 by pulling two connecting rods. Thus, the first channel 121 can be placed subcutaneously into the target 200.

[0394] Figure 10A is a schematic diagram showing the puncture mechanism 22 before entering the target 200 in a second embodiment of the application component 2 according to the present disclosure. Figure 10B is a schematic diagram showing the puncture mechanism 22 entering the target 200 in a second embodiment of the application component 2 according to the present disclosure. Figure 10C is a schematic diagram showing the puncture mechanism 22 exiting the target 200 in a second embodiment of the application component 2 according to the present disclosure.

[0395] In some examples, referring to Figure 10A, the transmission element 212 can be a cylinder and a connecting rod. In some examples, both ends of the connecting rod can be movably connected to the cylinder, and the piercing mechanism 22 can be fixed to the connecting rod. In some examples, the connecting rod can be generally C-shaped.

[0396] In some examples, a portion of the guide mechanism 23 may be disposed within a cylinder. In some examples, the portion of the guide mechanism 23 disposed within a cylinder may be a groove. In some examples, both ends of the connecting rod may be located within the groove.

[0397] In some examples, the drive source 211 can be a torsion spring. In some examples, one end of the torsion spring can be fixed to the cylinder. In some examples, the torsion spring can be fixed to the end of the cylinder away from the puncture mechanism 22.

[0398] In some examples, see Figure 10A, the torsion spring can be in a compressed state when the locking mechanism locks the drive mechanism 21.

[0399] In some examples, referring to Figure 10B, when the locking mechanism releases the drive mechanism 21, the torsion spring can extend and provide a driving force, which can be a circumferential force. In some examples, the cylinder can rotate along a third direction D3 under the action of the driving force, and the connecting rod can move towards the target 200 along a first direction D1 or away from the target 200 along a second direction D2 under the guidance of the groove.

[0400] In some examples, referring to Figure 10B, when the groove guide link moves toward the target 200, the link pushes the piercing mechanism 22 to move toward the target 200 along the first direction D1 to pierce the target 200.

[0401] In some examples, referring to Figure 10C, after the puncture mechanism 22 pierces the target 200, the cylinder can continue to rotate along the third direction D3, and the grooved guide link moves away from the target 200 along the second direction D2. The link pulls the puncture mechanism 22 away from the target 200 along the second direction D2. Thus, the first channel 121 can be placed under the skin of the target 200.

[0402] Figure 11A is a schematic diagram showing the puncture mechanism 22 before entering the target 200 in a second embodiment of the application component 2 according to the present disclosure example. Figure 11B is a schematic diagram showing the puncture mechanism 22 entering the target 200 in a second embodiment of the application component 2 according to the present disclosure example. Figure 11C is a schematic diagram showing the puncture mechanism 22 exiting the target 200 in a second embodiment of the application component 2 according to the present disclosure example. Figure 11D is a schematic diagram showing the drive source 211 in a second embodiment of the application component 2 according to the present disclosure example.

[0403] In some examples, referring to Figure 11A, the transmission element 212 can be a cam and a push rod. In some examples, the drive source 211 can be a torsion spring and a tension spring. In some examples, one end of the torsion spring can be fixed to the cam (see Figure 11D), and one end of the tension spring can be fixed to the push rod.

[0404] In some examples, when the locking mechanism locks the drive mechanism 21, the torsion spring can be in a compressed state and the tension spring can be in a free state (see Figure 11A).

[0405] In some examples, referring to Figure 11B, when the locking mechanism releases the drive mechanism 21, the torsion spring can extend and provide a driving force, which can be a circumferential force. In some examples, the cam can rotate along a third direction D3 under the action of the driving force, thereby pushing the push rod and compressing the tension spring. In some examples, the cam can push the push rod to move the piercing mechanism 22 towards the target 200 along the guide direction (i.e., the first direction D1) of the guide mechanism 23 to pierce the target 200.

[0406] In some examples, referring to Figure 11C, after the puncture mechanism 22 penetrates the target 200, the cam can continue to rotate along the third direction D3 and separate from the push rod. The tension spring is no longer compressed and extends to push the push rod towards the second direction D2, thereby pushing the puncture mechanism 22 away from the target 200 along the second direction D2. Thus, the first channel 121 can be placed subcutaneously in the target 200.

[0407] Figure 12A is a schematic diagram showing the puncture mechanism 22 entering the target 200 in a second embodiment of the application component 2 according to the present disclosure. Figure 12B is a schematic diagram showing the puncture mechanism 22 exiting the target 200 in a second embodiment of the application component 2 according to the present disclosure.

[0408] In some examples, referring to Figure 12A or Figure 12B, the drive source 211 can be a torsion spring. In some examples, one end of the torsion spring can be fixed to the puncture mechanism 22. The other end of the torsion spring can be fixed to the housing of the fluid delivery device 1.

[0409] In some examples, the number of torsion springs can be one or more.

[0410] In some examples, referring to Figure 12A, the torsion spring can be in a compressed or stretched state when the locking mechanism locks the drive mechanism 21. In some examples, the puncture mechanism 22 can be manually inserted into the subcutaneous tissue of the target 200 along the first direction D1.

[0411] In some examples, referring to Figure 12B, after the puncture mechanism 22 is manually inserted subcutaneously into the target 200, the locking mechanism can release the drive mechanism 21, and the torsion springs can extend and provide driving force. The directions of the driving force of the two torsion springs can be the third direction D3' and D3', respectively. In some examples, guided by the guide mechanism 23, the torsion springs can pull the puncture mechanism 22 away from the target 200 along the second direction D2. Thus, the first channel 121 can be placed subcutaneously into the target 200.

[0412] Figure 13A is a schematic diagram showing the puncture mechanism 22 entering the target 200 in a second embodiment of the application component 2 according to the present disclosure. Figure 13B is a schematic diagram showing the puncture mechanism 22 exiting the target 200 in a second embodiment of the application component 2 according to the present disclosure.

[0413] In some examples, referring to Figure 13A or Figure 13B, the drive source 211 can be a spiral spring. In some examples, one end of the spiral spring can be fixed to the puncture mechanism 22. The other end of the spiral spring can be fixed to the housing of the fluid delivery device 1.

[0414] In some examples, referring to Figure 13A, the spiral spring can be in a compressed or stretched state when the locking mechanism locks the drive mechanism 21. In some examples, the puncture mechanism 22 can be manually inserted into the subcutaneous tissue of the target 200 along the first direction D1.

[0415] In some examples, referring to Figure 13B, after the puncture mechanism 22 is manually inserted subcutaneously into the target 200, the locking mechanism can release the drive mechanism 21, allowing the spiral spring to extend and provide driving force. The direction of the spiral spring's driving force can be a second direction D2. In some examples, guided by the guide mechanism 23, the spiral spring can pull the puncture mechanism 22 away from the target 200 along the second direction D2. This allows the first channel 121 to be positioned subcutaneously into the target 200.

[0416] Figure 14A is a schematic diagram showing the puncture mechanism 22 entering the target 200 in a sixth embodiment of the application component 2 according to the present disclosure. Figure 14B is a schematic diagram showing the puncture mechanism 22 exiting the target 200 in a sixth embodiment of the application component 2 according to the present disclosure.

[0417] In some examples, referring to Figure 14A or Figure 14B, the drive source 211 can be a spring sheet. In some examples, one end of the spring sheet can be fixed to the puncture mechanism 22. The other end of the spring sheet can be fixed to the housing of the fluid delivery device 1.

[0418] In some examples, the number of spring sheets can be one or more.

[0419] In some examples, referring to Figure 14A, the spring sheet can be in a compressed or stretched state when the locking mechanism locks the drive mechanism 21. In some examples, the puncture mechanism 22 can be manually inserted into the subcutaneous tissue of the target 200 along the first direction D1.

[0420] In some examples, referring to Figure 14B, after the puncture mechanism 22 is manually inserted subcutaneously into the target 200, the locking mechanism can release the drive mechanism 21, allowing the spring plate to extend and provide a driving force. The direction of the driving force of the spring plate can be along a third direction D3. In some examples, guided by the guide mechanism 23, the spring plate can pull the puncture mechanism 22 away from the target 200 along a second direction D2. Thus, the first channel 121 can be positioned subcutaneously into the target 200.

[0421] Figure 15A is a schematic diagram showing the piercing mechanism 22 before entering the target 200 in the seventh embodiment of the application component 2 according to the present disclosure. Figure 15B is a schematic diagram showing the trigger portion 251 abutting against the first end face 2411 in the seventh embodiment of the application component 2 according to the present disclosure. Figure 15C is a schematic diagram showing the trigger portion 251 entering the locking groove 2412 in the seventh embodiment of the application component 2 according to the present disclosure. Figure 15D is a schematic diagram showing the piercing mechanism 22 exiting the target 200 in the seventh embodiment of the application component 2 according to the present disclosure. Figure 15E is a schematic diagram showing the removal of the drive mechanism 21 and the piercing mechanism 22 in the seventh embodiment of the application component 2 according to the present disclosure. Figure 15F is a schematic diagram showing the oblique entry into the target 200 in the seventh embodiment of the application component 2 according to the present disclosure. In Figure 15F, the locking mechanism 24 has been simplified for clarity, but this should not be construed as a limitation of the present disclosure.

[0422] In some examples, referring to Figure 15A, at least a portion of the puncture mechanism 22 may be disposed within the guide mechanism 23. This facilitates the guide mechanism 23 in guiding the puncture mechanism 22.

[0423] As described above, referring to FIG15A, the application component 2 may include a locking mechanism 24. In some examples, the locking mechanism 24 may include a first locking member 241. In some examples, the first locking member 241 may be configured to lock the drive mechanism 21 or the puncture mechanism 22. This helps to prevent the application component 2 from being triggered before the application fluid delivery device 1 is applied.

[0424] In some examples, referring to Figure 15A, the first locking member 241 can lock the position of the puncture mechanism 22 (e.g., the relative position of the puncture mechanism 22 and the fluid delivery device 1). In some examples, the first locking member 241 can lock the position of the puncture mechanism 22 by engaging with it. This facilitates locking the puncture mechanism 22.

[0425] In some examples, referring to Figure 15A, the puncture mechanism 22 may have a slot 221. The slot 221 may engage with a first locking member 241. The first locking member 241 may engage with the slot 221. Thus, the first locking member 241 can restrict the movement of the puncture mechanism 22.

[0426] In some examples, referring to FIG15A, the locking mechanism 24 may include a second locking member 242. The second locking member 242 may be configured to act on the first locking member 241 to lock the puncture mechanism 22. This provides stability to the first locking member 241 in locking the puncture mechanism 22. In some examples, one end of the second locking member 242 may abut against the first locking member 241. The other end of the second locking member 242 may be fixed to the housing of the fluid delivery device 1.

[0427] In some examples, the second locking member 242 can be a spring. The spring can apply a spring force to the first locking member 241 to maintain the engagement of the first locking member 241 with the slot 221.

[0428] In some examples, the puncture mechanism 22 can be manually inserted into the subcutaneous tissue of the target 200. In some examples, referring to Figure 15A, the puncture mechanism 22 may extend out of the housing of the fluid delivery device 1. This allows for easy manual insertion of the puncture mechanism 22 into the subcutaneous tissue of the target 200.

[0429] In some examples, the application component 2 may include a protective member 25. In some examples, the protective member 25 may extend beyond the housing of the fluid delivery device 1. In some examples, the protective member 25 may surround the portion of the puncture mechanism 22 that extends beyond the housing of the fluid delivery device 1. This reduces the possibility of accidental injury from the puncture mechanism 22. In some examples, the protective member 25 may be in the form of a hollow cylinder.

[0430] In some examples, the protective member 25 may be movably configured. Referring to Figure 15B, the protective member 25 may move after it abuts against the target 200. This exposes the piercing mechanism 22 inside the protective member 25, thereby facilitating the piercing mechanism 22 to penetrate the target 200.

[0431] In some examples, the protective element 25 can be movable relative to the fluid delivery device 1. In some examples, the protective element 25 can be movable along the D2 direction.

[0432] As described above, the first channel 121 can accommodate the puncture mechanism 22. In some examples, when the protective member 25 moves, the puncture mechanism 22 can carry the first channel 121 into the target 200. Referring to Figure 15B, when the protective member 25 moves along the D2 direction, the puncture mechanism 22 can carry the first channel 121 along the D1 direction.

[0433] In some examples, referring to Figure 15B, the protective element 25 may have a trigger 251. The trigger 251 may be configured to trigger the locking mechanism 24 (i.e., the first locking mechanism 241). The locking mechanism 24 can release the locking of the puncture mechanism 22 after being triggered by the trigger 251.

[0434] In some examples, after the protective member 25 has moved a predetermined distance, the trigger 251 may abut against the first end face 2411 of the first locking member 241 and apply force to the first end face 2411 to move the first locking member 241. In some examples, after the first locking member 241 has moved, the first locking member 241 may disengage from the slot 221 (i.e., no longer engage with the slot 221) to release the piercing mechanism 22. Thus, the piercing mechanism 22 can be triggered by the protective member 25 moving a predetermined distance. In some examples, the piercing mechanism 22 may move along the D2 direction after being released.

[0435] Specifically, referring to Figure 15B, the drive source 211 can be a spring. In some examples, one end of the spring can be fixed to the piercing mechanism 22. The other end of the spring can be fixed to the housing 213 of the drive mechanism 21. In some examples, the spring can be in a stored state (e.g., a stretched state). In this case, when the first locking member 241 moves, since the first locking member 241 no longer locks the piercing mechanism 22, the piercing mechanism 22 moves away from the target 200 under the action of the drive source 211.

[0436] In some examples, the application component 2 may include a blocking member. The blocking member may be configured to block the movement of the first channel 121. This prevents the first channel 121 from leaving the target 200 along with the released puncture mechanism 22 or from being carried away from the target 200 by the puncture mechanism 22. In some examples, the blocking member may be positioned on the side of the first channel 121 away from the target 200.

[0437] In some examples, referring to FIG15C, the first locking member 241 may have a locking groove 2412. After the protective member 25 has moved a predetermined distance, the trigger portion 251 may enter the locking groove 2412. After the trigger portion 251 enters the locking groove 2412, the locking groove 2412 may lock the trigger portion 251. Thus, the shaking of the protective member 25 can be reduced.

[0438] In some examples, referring to Figure 15D, after the puncture mechanism 22 is withdrawn from the subcutaneous tissue of the target 200, the first channel may be located subcutaneously in the target 200. At least a portion of the puncture mechanism 22 may be accommodated within the housing 213.

[0439] In some examples, see Figure 15E, after the fluid delivery device 1 is applied, the drive mechanism 21 and the puncture mechanism 22 can be removed from the fluid delivery device 1 along the D2 direction.

[0440] In some examples, the housing 213 of the drive mechanism 21 can be coupled or decoupled from the housing of the fluid delivery device 1 by screwing.

[0441] In some examples, referring to Figures 15A to 15E, the puncture mechanism 22 can enter the target 200 in a direction perpendicular to the surface of the target 200. This reduces the likelihood of the puncture mechanism 22 deflecting during entry into the target 200. Additionally, increasing the cross-sectional area of ​​the protective member 25 can further reduce the likelihood of the puncture mechanism 22 deflecting during entry into the target 200.

[0442] In some examples, referring to Figure 15F, the puncture mechanism 22 can enter the target 200 in a direction inclined to the surface of the target 200 (e.g., the D4 direction). In this case, compared to vertical entry into the target 200, the possibility of the first channel 121 becoming blocked is reduced, and the possibility of the first channel 121 escaping from the target 200 is also reduced.

[0443] In some examples, see Figure 15F, after the fluid delivery device 1 is applied, the drive mechanism 21 and the puncture mechanism 22 can be removed along the D5 direction.

[0444] In some examples, referring to FIG15F, the application component 2 may further include an application support 26. The application support 26 may be configured to assist the puncture mechanism 22 in obliquely entering the target 200. In some examples, the application support 26 may have a guide channel 261. The puncture mechanism 22 can move within the guide channel 261. Thus, it is possible to assist the puncture mechanism 22 in obliquely entering the target 200 at a predetermined angle. In some examples, referring to FIG15F, the guide channel 261 may extend along the D4 or D5 direction.

[0445] In some examples, referring to Figure 15F, before applying the fluid delivery device 1, the drive mechanism 21 and the puncture mechanism 22 can be installed inside the application support 26 (e.g., into the guide channel 261). This allows the guide channel 261 to easily guide the fluid delivery device 1, the drive mechanism 21 and the puncture mechanism 22.

[0446] In some examples, the fluid delivery device 1 can be applied by pressing the housing 213 of the drive mechanism 21. The housing 213 may protrude at least partially from the application support 26 (see FIG. 15F). This facilitates the application of the fluid delivery device 1.

[0447] In some examples, after the fluid delivery device 1 is applied, the application support 26 can be removed from the target 200.

[0448] In some examples, when the fluid delivery device 1 is applied to the target 200, the housing 213 of the drive mechanism 21 can engage with the application support 26. For example, a protrusion can be formed on the surface of the housing 213, and a groove can be formed on the inner wall of the guide channel 261. When the housing 213 is pressed to a predetermined depth, the protrusion of the housing 213 can engage with the groove of the guide channel 261 to limit the relative movement between the housing 213 and the application support 26. This allows for the simultaneous removal of the application support 26, the drive mechanism 21, and the puncture mechanism 22.

[0449] According to this disclosure, a fluid conveying device 1 capable of quantitatively conveying fluid is provided.

[0450] While the present disclosure has been specifically described above in conjunction with the accompanying drawings and examples, it is to be understood that the foregoing description does not limit the present disclosure in any way. Those skilled in the art can make modifications and variations to the present disclosure as needed without departing from its essential spirit and scope, and all such modifications and variations shall fall within the scope of the present disclosure.

Claims

1. A fluid conveying device, characterized in that, The device includes a fluid channel, an actuation component, and a flow-limiting component. The fluid channel includes a first channel, a reservoir, and a second channel in fluid communication. The actuation component is configured to provide actuation force to cause fluid to flow into or out of the reservoir. The flow-limiting component is configured to open or close the first channel and / or the second channel.

2. The fluid conveying device according to claim 1, characterized in that, The first channel, the liquid storage tank, and the second channel are connected in sequence.

3. The fluid conveying device according to claim 1, characterized in that, The first channel, the liquid storage tank, and the second channel are integrally formed.

4. The fluid conveying device according to claim 1, characterized in that, The actuation component includes a power source configured to provide actuation force.

5. The fluid conveying device according to claim 1, characterized in that, The actuating force is applied to the liquid storage tank, and the liquid storage tank actuates the fluid in the liquid storage tank after being subjected to the force.

6. The fluid conveying device according to claim 1, characterized in that, The actuating force acts on the fluid.

7. The fluid conveying device according to claim 5, characterized in that, The actuation force is configured to increase the pressure in the reservoir to cause fluid to flow out of the reservoir.

8. The fluid conveying device according to claim 7, characterized in that, The liquid storage tank deforms to reduce its volume.

9. The fluid conveying device according to claim 5, characterized in that, The actuation force is configured to reduce the pressure in the reservoir to allow fluid to flow into the reservoir.

10. The fluid conveying device according to claim 9, characterized in that, The liquid storage tank deforms to increase its volume.

11. The fluid conveying device according to claim 1, characterized in that, The actuating force is applied to the liquid storage tank to increase or decrease its volume.

12. The fluid conveying device according to claim 1, characterized in that, The liquid storage tank is made of elastic material.

13. The fluid conveying device according to claim 1, characterized in that, The flow-limiting component restricts the flow of fluid in the first channel and / or the second channel.

14. The fluid conveying device according to claim 1, characterized in that, The flow limiting component includes a valve disposed on the flow path of the fluid in the first channel and / or the second channel.

15. The fluid conveying device according to claim 1, characterized in that, The flow-limiting component acts on the first channel and / or the second channel to close or open the fluid flow path.

16. The fluid conveying device according to claim 1, characterized in that, In response to the current limiting component opening the first channel and / or the second channel, the actuation component provides actuation force.

17. The fluid conveying device according to claim 1, characterized in that, The current limiting component alternately activates the first channel and the second channel.

18. The fluid conveying device according to claim 1, characterized in that, It includes a holding component configured to hold the position of the actuation component and provide actuation force.

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