Fluid conveying device

Abstract

A fluid conveying device (1), comprising a fluid channel assembly (12), an actuating assembly (13) and a flow limiting assembly (14), wherein the fluid channel assembly (12) comprises a first channel (121), a liquid storage compartment (122) and a second channel (123), which are in fluid communication with each other; the actuating assembly (13) is configured to provide an actuating force so as to cause a fluid to flow into or out of the liquid storage compartment (122); and the flow limiting assembly (14) is configured to open or close the first channel (121) and / or the second channel (123). Provided is the fluid conveying device (1) capable of quantitatively conveying the fluid.

Description

Fluid conveying device Technical Field

[0001] The present disclosure relates to the field of biomedical engineering industry, and in particular to a fluid delivery device. Background Art

[0002] Chronic diseases are long-lasting, slow-growing, and difficult-to-cure illnesses. They are often linked 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. For example, diabetes is typically treated with an insulin pump. This pump mimics the physiological pattern of insulin secretion by the human pancreas, delivering insulin at a regular, quantitative rate to stabilize blood sugar levels.

[0003] Because patients typically need to receive insulin injections regularly and quantitatively, existing insulin pumps are generally portable, allowing patients to carry them around or apply them to their bodies. Portable insulin pumps typically have a drug reservoir, a piston, and a pipeline for delivering medication. When medication is needed, the piston pushes the medication in the reservoir to deliver it to the body through the pipeline. The dosage is controlled by controlling the distance the piston is pushed.

[0004] However, existing portable insulin pumps often experience medication backflow or leakage during use, making it difficult to maintain a stable insulin dose. Furthermore, most existing portable insulin pumps rely on complex mechanical structures to deliver a consistent dose of insulin, resulting in low reliability and portability. Furthermore, driving this complex mechanical structure increases the pump's energy consumption. Summary of the Invention

[0005] The present disclosure is proposed in view of the above-mentioned state of the prior art, and its purpose is to provide a fluid delivery device capable of quantitatively delivering fluid.

[0006] To this end, the present disclosure provides a fluid delivery device, comprising a fluid channel, an actuating assembly and a flow limiting assembly, wherein the fluid channel comprises a first channel, a liquid storage tank and a second channel connected by fluid, the actuating assembly is configured to provide an actuating force to allow fluid to flow into or out of the liquid storage tank, and the flow limiting assembly is configured to open or close the first channel and / or the second channel.

[0007] In the present disclosure, a fluid-connected first channel, a liquid reservoir, and a second channel can provide a path for fluid flow. Furthermore, an actuating assembly provides an actuating force, enabling fluid flow in the fluid channel and facilitating flow of a predetermined volume of fluid into or out of the liquid reservoir. Furthermore, a flow-limiting assembly opens and closes the first channel and / or the second channel, facilitating fluid flow along a desired path.

[0008] In addition, in the fluid delivery device of the present disclosure, optionally, the first channel, the liquid storage tank, and the second channel are connected in sequence. Thus, the fluid can flow into the liquid storage tank through the second channel and out of the liquid storage tank through the first channel; or the fluid can 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 delivery device of the present disclosure, the first channel, the liquid storage tank, and the second channel are optionally 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 separate fluid channels, thereby reducing the possibility of fluid leakage in the fluid channel.

[0010] In addition, in the fluid delivery device of the present disclosure, optionally, the actuating assembly includes a power source configured to provide an actuating force, thereby enabling the actuating assembly to provide the actuating force.

[0011] In addition, in the fluid delivery device involved in the present disclosure, optionally, the actuating force acts on the liquid storage tank, and the liquid storage tank actuates the fluid in the liquid storage tank after being subjected to the force.

[0012] In addition, in the fluid delivery device according to the present disclosure, optionally, the actuating force acts on the fluid.

[0013] In addition, in the fluid delivery device involved in the present disclosure, optionally, the actuating force is configured to increase the pressure in the liquid storage tank to make the fluid flow out of the liquid storage tank.

[0014] In addition, in the fluid delivery device of the present disclosure, the liquid storage tank can optionally be deformed to reduce its volume. In this case, since the reduced volume of the liquid storage tank corresponds to the volume of the fluid flowing out of the liquid storage tank, reducing the volume of the liquid storage tank can help accurately control the volume of the fluid flowing out of the liquid storage tank.

[0015] In addition, in the fluid delivery device involved in the present disclosure, optionally, the actuating force is configured to reduce the pressure in the liquid storage tank to allow the fluid to flow into the liquid storage tank.

[0016] In addition, in the fluid delivery device of the present disclosure, the liquid storage tank can optionally be deformed to increase its volume. In this case, since the increased volume of the liquid storage tank corresponds to the volume of the fluid flowing into the liquid storage tank, increasing the volume of the liquid storage tank can help accurately control the volume of the fluid flowing into the liquid storage tank.

[0017] In addition, in the fluid delivery device involved in the present disclosure, optionally, the actuating force acts on the liquid storage tank to increase or decrease the volume of the liquid storage tank.

[0018] In addition, in the fluid delivery device of the present disclosure, optionally, the liquid storage tank is made of an elastic material, thereby enabling the liquid storage tank to increase or decrease its volume through the properties of the elastic material.

[0019] In addition, in the fluid delivery device involved in the present disclosure, optionally, the flow limiting component limits the flow of fluid in the first channel and / or the second channel.

[0020] In addition, in the fluid delivery device involved in the present disclosure, optionally, the flow limiting component includes a valve provided on the flow path of the fluid in the first channel and / or the second channel.

[0021] In addition, in the fluid delivery device involved in the present disclosure, optionally, the flow limiting component acts on the first channel and / or the second channel to close or open the flow path of the fluid.

[0022] Additionally, in the fluid delivery device of the present disclosure, optionally, the actuating assembly provides an actuating force in response to the flow limiting assembly opening the first channel and / or the second channel. In this case, the fluid reservoir is first connected to the first channel and / or the second channel, and then the actuating assembly provides the actuating force, thereby improving the utilization rate of the actuating force.

[0023] Additionally, in the fluid delivery device of the present disclosure, the flow limiting assembly optionally opens the first channel and the second channel alternately. In this case, by alternately opening the first channel and the second channel, the fluid can flow into or out of the liquid storage tank through one of the first channel and the second channel, thereby achieving directional flow of the fluid.

[0024] In addition, the fluid delivery device according to the present disclosure may optionally include a holding assembly configured to hold the position of the actuating assembly and provide an actuating force.

[0025] According to the present disclosure, a fluid delivery device capable of quantitatively delivering fluid is provided. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] FIG1 is a schematic diagram showing an application scenario of a fluid delivery device according to an example of the present disclosure.

[0028] FIG2 is a schematic structural diagram showing a fluid delivery device according to an example of the present disclosure.

[0029] FIG3A is a schematic diagram showing an actuating member according to an example of the present disclosure acting on a liquid storage tank and deforming the liquid storage tank.

[0030] FIG3B is a schematic diagram showing the liquid storage tank according to an example of the present disclosure restored to its original state.

[0031] FIG. 3C is a schematic diagram illustrating another embodiment of an actuator according to an example of the present disclosure.

[0032] FIG3D is a schematic diagram illustrating another embodiment of an actuator according to an example of the present disclosure.

[0033] FIG. 4A is a schematic diagram showing that the first rod according to an example of the present disclosure is located at a third preset position.

[0034] FIG4B is a schematic diagram showing that the first rod according to an example of the present disclosure is located at a fourth preset position.

[0035] FIG. 5A is a schematic diagram showing that the second rod according to an example of the present disclosure is located at a third preset position.

[0036] FIG. 5B is a schematic diagram showing that the second rod according to an example of the present disclosure is located at a fourth preset position.

[0037] FIG6A is a schematic diagram showing a valve according to an example of the present disclosure that provides fluid to a liquid reservoir when the valve is a passive valve.

[0038] FIG6B is a schematic diagram showing a liquid storage tank receiving fluid when the valve involved in an example of the present disclosure is a passive valve.

[0039] FIG. 7 is a schematic diagram illustrating a first limiting portion according to an example of the present disclosure.

[0040] FIG8A is a schematic diagram illustrating a first end of a first retainer actuated according to an example of the present disclosure.

[0041] FIG8B is a schematic diagram illustrating the actuation of the second end of the second retainer according to an example of the present disclosure.

[0042] FIG. 9A is a schematic diagram showing the penetration of a puncture mechanism into a target in the first embodiment of the application assembly according to an example of the present disclosure.

[0043] FIG. 9B is a schematic diagram illustrating a withdrawal target of a puncture mechanism in the first embodiment of the application assembly according to an example of the present disclosure.

[0044] FIG. 10A is a schematic diagram showing a second embodiment of an application assembly according to an example of the present disclosure before a puncture mechanism enters a target.

[0045] 10B is a schematic diagram showing the penetration of the puncture mechanism into the target in the second embodiment of the application assembly according to an example of the present disclosure.

[0046] FIG. 10C is a schematic diagram illustrating a withdrawal target of a puncture mechanism in the second embodiment of the application assembly according to an example of the present disclosure.

[0047] FIG. 11A is a schematic diagram showing a third embodiment of an application assembly according to an example of the present disclosure before a puncture mechanism enters a target.

[0048] 11B is a schematic diagram showing the penetration of the puncture mechanism into the target in the third embodiment of the application assembly according to an example of the present disclosure.

[0049] FIG. 11C is a schematic diagram illustrating a withdrawal target of a puncture mechanism in a third embodiment of an application assembly according to an example of the present disclosure.

[0050] FIG. 11D is a schematic diagram illustrating a driving source in a third embodiment of the applying assembly according to an example of the present disclosure.

[0051] FIG. 12A is a schematic diagram showing the penetration of a puncture mechanism into a target in the fourth embodiment of the application assembly according to an example of the present disclosure.

[0052] FIG. 12B is a schematic diagram showing the exit target of the puncture mechanism in the fourth embodiment of the application assembly according to an example of the present disclosure.

[0053] FIG. 13A is a schematic diagram showing the penetration of a puncture mechanism into a target in the fifth embodiment of the application assembly according to an example of the present disclosure.

[0054] FIG. 13B is a schematic diagram showing the exit target of the puncture mechanism in the fifth embodiment of the application assembly according to an example of the present disclosure.

[0055] FIG. 14A is a schematic diagram showing the penetration of a puncture mechanism into a target in a sixth embodiment of an application assembly according to an example of the present disclosure.

[0056] FIG. 14B is a schematic diagram showing the exit target of the puncture mechanism in the sixth embodiment of the application assembly according to an example of the present disclosure.

[0057] Explanation of the accompanying reference numerals: 1…fluid conveying device, 11…adhesive sheet, 12…fluid channel, 121…first channel, 122…liquid storage tank, 123…second channel, 13…actuating assembly, 131…actuating member, 1311…actuating portion, 1312…first end, 1313…second end, 132…first rod, 1321…first matching portion, 133…second rod, 1331…second matching portion, 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 member, 1412…first joint portion, 1413…first limiting portion, 142…second valve, 1421 …second opening and closing member, 1422…second joining portion, 15…substrate, 151…first fixing portion, 152…second fixing portion, 153…third fixing portion, 16…resetting assembly, 161…first restoring member, 162…second restoring member, 17…holding assembly, 171…first holding member, 172…second holding member, 18…applying assembly, 181…driving mechanism, 1811…driving source, 1812…transmission member, 182…puncture mechanism, 183…guiding mechanism, 2…target, A…center fulcrum, P1…first fulcrum, P2…second fulcrum, CA…center axis. DETAILED DESCRIPTION

[0058] The preferred embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. In the following description, identical components are assigned identical reference numerals, and duplicate descriptions are omitted. In addition, the accompanying drawings are merely schematic, and the proportions of the dimensions of the components and the shapes of the components may differ from the actual ones.

[0059] It should be noted that the terms "including" 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 clearly listed, but may include or have other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0060] It should be noted that, in this article, relative position and relative direction terms such as "above", "towards above", "below", "towards downward", "up and down direction", "left side", "towards the left side", "left direction", "towards the left", "right side", "towards the right side", "right side", "towards the right", "left and right direction", "front", "towards the front", "back", "towards the back", "front and back direction" are with reference to the normal operating posture and should not be considered as restrictive.

[0061] In the present disclosure, unless otherwise clearly specified and limited, connection can be understood as mechanical connection. For example, "connection" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate component.

[0062] In some examples, leakage may refer to an undesired leakage of fluid from a fluid channel. Leakage may cause the actual volume of fluid delivered by the fluid delivery device to be less than a preset volume. For example, in the case of insulin, this may result in an insufficient amount of insulin delivered by the fluid delivery device, which may affect the health of the host (also referred to as a patient or user). Therefore, reducing the likelihood of leakage can help maintain the health of the host. In addition to reducing the likelihood of leakage, other means of helping the fluid delivery device deliver a preset volume of fluid can also help maintain the health of the host.

[0063] The present disclosure relates to a fluid delivery device for delivering a fluid to a target. The fluid delivery device disclosed herein is characterized by its small size, low cost, simple structure, and portability. Furthermore, the fluid delivery device disclosed herein can more accurately measure the volume of fluid delivered to a target. The fluid delivery device disclosed herein may also be referred to as a drug pump, drug delivery device, fluid delivery pump, or fluid infusion device.

[0064] In some examples, the fluid delivery device involved in the present disclosure may also be referred to as a delivery device, a fluid transport device, a fluid distribution device, a fluid injection device, a fluid pumping device, a pump, a drug pump, an insulin pump, a drug delivery device or an insulin delivery device, etc.

[0065] In some examples, the fluids described herein may refer to medications delivered via the fluid delivery devices described herein. For example, the fluids may be any one or a combination of hormones, antitoxins, analgesics, peptides, proteins, insulin, enzymes, oligonucleotides, antiallergics, antihistamines, anti-inflammatory agents, corticosteroids, erythropoietin, or vaccines. In some examples, the fluids may be dopamine, dobutamine, epinephrine, sodium nitroprusside, styraxine, propofol, insulin, or glucagon-like peptide-1.

[0066] Hereinafter, the fluid conveying device involved in the present disclosure and the fluid conveying system including the fluid conveying device will be described in detail with reference to the accompanying drawings.

[0067] FIG1 is a schematic diagram showing an application scenario of a fluid delivery device 1 according to an example of the present disclosure.

[0068] In some examples, fluid delivery device 1 can be configured to deliver fluid. In some examples, fluid delivery device 1 can deliver fluid from the interior of fluid delivery device 1 to the exterior. In some examples, fluid delivery device 1 can deliver fluid to subject 2. In some examples, the fluid can be pre-stored within fluid delivery device 1. In this case, because fluid delivery device 1 can deliver fluid directly to subject 2, it can improve the convenience and timeliness of subject 2's access to fluid. In some examples, subject 2 can also be referred to as a host, patient, or user.

[0069] In other examples, the fluid delivery device 1 can also deliver fluid from the outside to the inside of the fluid delivery device 1. In some examples, the fluid delivery device 1 can also deliver fluid from the inside of the target 2 to the outside of the target 2. For example, the fluid delivery device 1 can also collect fluid from the target 2.

[0070] In some examples, the fluid delivery device 1 can be placed on the target 2 (see FIG. 1 ). In some examples, the fluid delivery device 1 can be placed on the surface of the target 2 or inside the target 2. In some examples, a portion of the fluid delivery device 1 can be placed on the surface of the target 2, and another portion can be placed inside the target 2. In other examples, the entire fluid delivery device 1 can also be placed inside the target 2.

[0071] In some examples, the fluid delivery device 1 can be applied to a target 2. In some examples, the fluid delivery device 1 can be applied to the body surface of the target 2. In some examples, the fluid delivery device 1 can apply itself to the target 2 via its own structure (e.g., application assembly 18 described later).

[0072] In some examples, the fluid delivery device 1 can be fixed to the subject 2. In some examples, the fluid delivery device 1 can be fixed to the body surface of the subject 2. For example, the fluid delivery device 1 can be fixed to the abdomen or arm of the subject 2. However, the present disclosure is not limited to this, and the fixing position of the fluid delivery device 1 can be adjusted as needed. In some examples, the fluid delivery device 1 can be adhered to the subject 2. In some examples, the fluid delivery device 1 can also be tied to the subject 2 using a strap.

[0073] In some examples, referring to FIG. 1 , a fluid delivery device 1 can be adhered to the surface of a subject 2. In some examples, the fluid delivery device 1 can include an adhesive sheet 11 having adhesive properties. In some examples, the fluid delivery device 1 can be adhered to the surface of the subject 2 via the adhesive sheet 11. This facilitates the fixation of the fluid delivery device 1 to the subject 2.

[0074] In some examples, at least a portion of the fluid delivery device 1 can be placed within the body of the target 2. For example, it can be placed subcutaneously within the target 2. This facilitates the fluid delivery device 1 to deliver fluid to the target 2. In some examples, when the fluid delivery device 1 is placed within the target 2, the fluid delivery device 1 can deliver fluid to the target 2.

[0075] FIG2 is a schematic structural diagram showing a fluid delivery device 1 according to an example of the present disclosure.

[0076] In some examples, fluid delivery device 1 may include a fluid channel 12 and an actuation assembly 13 (see FIG. 2 ). In some examples, fluid channel 12 may store fluid. In some examples, at least a portion of fluid channel 12 may be positioned within a target 2, and actuation assembly 13 may provide an actuation force to deliver the fluid into the target 2.

[0077] In some examples, the fluid delivery device 1 may further include a flow restriction assembly 14 (see FIG. 2 ). In some examples, the flow restriction assembly 14 may restrict the flow of fluid in the fluid channel 12. In some examples, the flow restriction assembly 14 may be configured to open or close the fluid channel 12, thereby restricting the flow direction of the fluid.

[0078] In some examples, referring to FIG2 , the fluid delivery device 1 can include a substrate 15. In some examples, the substrate 15 can be configured to support the fluid channel 12, the actuation assembly 13, and the flow restriction assembly 14. In some examples, the fluid channel 12, the actuation assembly 13, and the flow restriction assembly 14 can be disposed on the substrate 15.

[0079] In some examples, substrate 15 can be plate-shaped. In some examples, substrate 15 can have two sides. In some examples, one side of substrate 15 can be provided with fluid channel 12, flow limiting assembly 14, and actuator assembly 13, while the other side of substrate 15 can be adhered to the surface of target 2. In some examples, substrate 15 can also have other shapes and structures that facilitate the installation of components.

[0080] In some examples, referring to FIG2 , at least a portion of the fluid channel 12 may extend through the substrate 15 , thereby facilitating the fluid channel 12 to enter the body of the target 2 .

[0081] In other examples, all of the fluid channels 12 may be disposed on the same surface of the substrate 15 .

[0082] 2 , the fluid delivery device 1 can include a fluid channel 12. In some examples, the fluid channel 12 can be configured to store a fluid.

[0083] In some examples, the fluid may be pre-stored in the fluid channel 12. This enables the fluid delivery device 1 to deliver the fluid more timely.

[0084] In some examples, the fluid can be replenished into the fluid delivery device 1. In some examples, the fluid can be replenished into the fluid channel 12.

[0085] In some examples, the fluid channel 12 can also be configured to provide a flow path. In some examples, the fluid can flow into and / or out of the target 2 via the fluid channel 12. In some examples, the fluid channel 12 can guide the fluid into and / or out of the target 2.

[0086] In some examples, fluid can be replenished into the fluid delivery device 1 through the fluid channel 12 .

[0087] In some examples, fluid channel 12 may be at least partially disposed within target 2. In some examples, fluid channel 12 may be at least partially disposed within the body of target 2. This facilitates delivery of fluid into the body of target 2.

[0088] 2 , the fluid channel 12 can include a first channel 121. In some examples, the fluid can flow through the first channel 121. In some examples, the fluid can flow into or out of the fluid delivery device 1 via the first channel 121.

[0089] In some examples, the fluid may flow out through one end of the first channel 121 and flow in through the other end of the first channel 121 .

[0090] In some examples, at least a portion of first channel 121 may be positioned within target 2. In some examples, one end of first channel 121 may be implanted in target 2.

[0091] In some examples, an end of the first channel 121 where the fluid flows out may be placed within the body of the target 2 . In some examples, the fluid may be delivered to the target 2 via the first channel 121 .

[0092] In some examples, the first channel 121 can be a tubular structure (see FIG2 ). In some examples, the inner diameter of the first channel 121 can be 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. Preferably, the inner diameter of the first channel 121 can be 0.3 mm.

[0093] In some examples, the outer diameter of the first channel 121 can be 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. Preferably, the outer diameter of the first channel 121 can be 1 mm.

[0094] In some examples, the first channel 121 may be cylindrical. In some examples, the cross-section of the first channel 121 may be circular. This helps to disperse the pressure on the first channel 121, thereby reducing the possibility of deformation of the first channel 121.

[0095] In other examples, the first channel 121 may be prism-shaped. In some examples, the cross-section of the first channel 121 may be square, star-shaped, or other irregular shapes.

[0096] In some examples, the first channel 121 can be made of an elastic material. For example, the first channel 121 can be made of at least one of silicone, rubber, and an elastomeric polymer. In this case, the first channel 121 can be easily bent and adjusted in shape, thereby increasing the flexibility of the first channel 121 during installation and deployment.

[0097] In some examples, the first channel 121 can be made of a biocompatible material. In some examples, the biocompatible material made of the first channel 121 can 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 (TPU).

[0098] Additionally, in some examples, the first channel 121 can be made of a hard 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.), a titanium alloy, and aluminum. In some examples, the first channel 121 can be made of a hard non-metallic material. For example, the first channel 121 can be made of at least one of glass, plastic, a ceramic composite material, and a carbon fiber composite material. In this case, the first channel 121 can be made less susceptible to damage, thereby ensuring more stable fluid flow.

[0099] In some examples, the inner wall of first channel 121 may be coated with a lubricating layer. In some examples, the lubricating layer may be made of polytetrafluoroethylene (PTFE). This facilitates fluid flow through first channel 121, thereby helping to prevent clogging of first channel 121.

[0100] 2 , the fluid channel 12 can include a fluid reservoir 122. In some examples, the fluid can flow through the fluid reservoir 122. In some examples, the fluid can flow into or out of the fluid delivery device 1 via the fluid reservoir 122.

[0101] In some examples, the fluid may flow out through one end of the liquid reservoir 122 and flow in through the other end of the liquid reservoir 122. In some examples, the end of the liquid reservoir 122 where the fluid flows out may be connected to the end of the first channel 121 where the fluid flows in.

[0102] In some examples, the liquid reservoir 122 can be configured to receive fluid. In some examples, the liquid reservoir 122 receiving the fluid can refer to the fluid flowing into the liquid reservoir 122. In some examples, the manner in which the liquid reservoir 122 receives the fluid can include at least one of flowing in, squeezing in, sucking in, and pumping in.

[0103] In some examples, for ease of understanding, receiving fluid can also be referred to as replenishing fluid, for example, receiving fluid by the liquid storage tank 122 can be referred to as replenishing fluid to the liquid storage tank 122; providing fluid can also be referred to as transporting fluid, for example, providing fluid by the liquid storage tank 122 can be referred to as transporting fluid from the liquid storage tank 122 to the target 2.

[0104] In some examples, fluid reservoir 122 can also be configured to supply fluid. In some examples, supplying fluid from fluid reservoir 122 can refer to fluid flowing out of fluid reservoir 122, or can also be referred to as fluid discharge from fluid reservoir 122. In some examples, the fluid flowing out of fluid reservoir 122 can flow into first channel 121. In some examples, the fluid in fluid reservoir 122 can be delivered to target 2 via first channel 121.

[0105] In some examples, the liquid reservoir 122 may also be configured to store fluid. In some examples, the fluid flowing into the liquid reservoir 122 may be stored in the liquid reservoir 122. In some examples, the fluid to be delivered to the target 2 may be pre-stored in the liquid reservoir 122.

[0106] In some examples, at least a portion of fluid reservoir 122 may be located outside the body of target 2 .

[0107] In some examples, the liquid reservoir 122 may have a tubular structure. In some examples, the diameters of the two end portions of the liquid reservoir 122 may be equal to or smaller than the diameter of the middle portion. For example, the liquid reservoir 122 may have a shuttle-shaped structure. In other examples, the diameters of the two end portions of the liquid reservoir 122 may be larger than the diameter of the middle portion.

[0108] In some examples, the liquid storage tank 122 may be made of an elastic material, thereby facilitating increasing or decreasing the volume of the liquid storage tank 122. For a detailed description of the material of the liquid storage tank 122, reference may be made to the description of the first channel 121, which will not be repeated here.

[0109] In some examples, the liquid reservoir 122 may have at least one dispensing hole. For example, the liquid reservoir 122 may have one, two, or three dispensing holes. In some examples, the dispensing hole may be used to replenish the fluid in the liquid reservoir 122.

[0110] 2 , the fluid channel 12 can include a second channel 123. In some examples, the fluid can flow through the second channel 123. In some examples, the fluid can flow into or out of the fluid delivery device 1 via the second channel 123.

[0111] In some examples, the fluid may 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 end of the second channel 123 where the fluid flows out may be connected to the end of the liquid reservoir 122 where the fluid flows in.

[0112] In some examples, second channel 123 can be configured to replenish fluid. In some examples, fluid can be added to fluid delivery device 1 via second channel 123. In some examples, fluid can flow into fluid reservoir 122 via second channel 123. In some examples, replenishing fluid with second channel 123 can mean that fluid flows into second channel 123 and is stored in second channel 123, or fluid flows into fluid reservoir 122 via second channel 123 and is stored in second channel 123.

[0113] In other examples, the fluid may be replenished into the fluid delivery device 1 via the first channel 121 , or may be delivered to the target 2 via the second channel 123 .

[0114] In some examples, the second channel 123 may be located outside the body of the target 2 , thereby facilitating replenishment of fluid into the fluid delivery device 1 .

[0115] The description of the structure and material of the second channel 123 may refer to the relevant description of the first channel 121 and will not be repeated here.

[0116] In some examples, fluid channel 12 may include a drug reservoir. In some examples, the drug reservoir may be configured to pre-store fluid. In some examples, the fluid to be delivered to target 2 may be pre-stored in the drug reservoir. This facilitates timely access to the fluid by target 2.

[0117] In some examples, the volume of the drug chamber can be larger than the volume of the liquid storage chamber 122. This can facilitate increasing the storage capacity of the fluid delivery device 1. In other examples, the volume of the drug chamber can also be equal to or smaller than the volume of the liquid storage chamber 122.

[0118] In some examples, the drug reservoir can discharge fluid. In some examples, the fluid discharged from the drug reservoir can enter second channel 123. In some examples, the fluid discharged from the drug reservoir can be transported to liquid storage tank 122. In some examples, the fluid can be discharged from the drug reservoir by applying an action to the drug reservoir. For example, the fluid can be discharged from the drug reservoir by squeezing. In some examples, the volume of the fluid discharged from the drug reservoir can be a preset volume.

[0119] In some examples, the fluid delivery device 1 may include a piston. In some examples, the piston may be connected to the drug chamber. In some examples, the fluid in the drug chamber may be pressurized by moving the piston to discharge the fluid from the drug chamber.

[0120] In some examples, when the piston applies a preset pressure to the fluid in the medicine chamber, the medicine chamber can discharge a preset volume of fluid. In some examples, the preset pressure and the preset volume can be adjusted as needed. In this case, because the volume of fluid discharged from the medicine chamber is related to the pressure, adjusting the pressure to the preset pressure can cause the medicine chamber to discharge the preset volume of fluid.

[0121] In some examples, the drug chamber may be provided with a pressure sensor, thereby being able to obtain the pressure of the fluid in the drug chamber when the piston applies pressure to the drug chamber through the pressure sensor.

[0122] In other examples, the sensor in the medicine chamber may also be a capacitive sensor. In some examples, the volume of the fluid remaining in the medicine chamber may be detected by detecting the capacitance between the piston and one end of the medicine chamber from which the fluid is discharged.

[0123] In other examples, the fluid delivery device 1 may include a spring. In some examples, the spring may abut against the drug reservoir. In some examples, the spring may act on the drug reservoir. In some examples, the drug reservoir may discharge fluid under the action of the spring.

[0124] In other examples, the drug chamber can also be a vacuum soft bag. In this case, since the drug chamber is relatively easy to deform, the shape of the drug chamber 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 the miniaturization of the fluid delivery device 1.

[0125] In other examples, the medicine chamber may also have a structure that is substantially a telescopic hose, thereby facilitating the discharge of fluid in the medicine chamber.

[0126] In some examples, the drug reservoir may have at least one dispensing hole. For example, the drug reservoir may have one, two, or three dispensing holes. In some examples, the dispensing hole may be used to replenish fluid to the drug reservoir.

[0127] In some examples, when the medicine chamber stores fluid, the pressure of the fluid in the medicine chamber can be maintained within a preset range. In this case, the occurrence of negative pressure or bubbles caused by the fluid in the medicine chamber being emptied can be reduced, thereby improving the stability of the medicine chamber.

[0128] Among them, the description of the material of the medicine chamber can refer to the relevant description of the first channel 121, which will not be repeated here.

[0129] In other examples, when the fluid channel 12 has a first channel 121, the first channel 121 can receive, store and provide fluid to the target 2; when the fluid channel 12 has a first channel 121 and a fluid storage tank 122, the fluid storage tank 122 can receive, store and provide fluid to the first channel 121, and the first channel 121 can receive and provide fluid to the target 2; when the fluid channel 12 has a first channel 121, a fluid storage tank 122 and a second channel 123, the second channel 123 can receive and provide fluid to the fluid storage tank 122, the fluid storage tank 122 can receive, store and provide fluid to the first channel 121, and the first channel 121 can receive and provide fluid to the target 2.

[0130] In some examples, referring to FIG2 , the first channel 121 can be connected to the liquid storage tank 122. In some examples, the first channel 121 can be fixedly connected to the liquid storage tank 122. In some examples, the first channel 121 can be integrally formed with the liquid storage tank 122.

[0131] In some examples, the first channel 121 and the liquid storage tank 122 may be connected by at least one of fusion welding and bonding.

[0132] In other examples, the first channel 121 may also be detachably connected to the liquid storage tank 122 .

[0133] In some examples, the first channel 121 can be connected to any location on the liquid reservoir 122. In some examples, the first channel 121 and the liquid reservoir 122 can be in fluid communication.

[0134] As described above, the first channel 121 may be at least partially disposed within the body of the target 2. In some examples, an end of the first channel 121 that is not disposed within the body of the target 2 may be connected to the liquid reservoir 122.

[0135] In some examples, referring to FIG2 , the second channel 123 can be connected to the liquid storage tank 122. In some examples, the second channel 123 can be fixedly connected to the liquid storage tank 122. In some examples, the second channel 123 can be integrally formed with the liquid storage tank 122.

[0136] In some examples, the second channel 123 and the liquid storage tank 122 may be connected by at least one of fusion welding and bonding.

[0137] In other examples, the second channel 123 may also be detachably connected to the liquid storage tank 122 .

[0138] In some examples, the second channel 123 can be connected to any location on the liquid reservoir 122. In some examples, the second channel 123 and the liquid reservoir 122 can be in fluid communication.

[0139] In some examples, the first channel 121, the liquid storage tank 122, and the second channel 123 can be integrally formed. In this case, since the first channel 121, the liquid storage tank 122, and the second channel 123 are integrally formed, the gaps between the components can be reduced compared to a separate fluid channel 12, thereby reducing the possibility of fluid leakage in the fluid channel 12.

[0140] In some examples, the first channel 121, the liquid storage tank 122, and the second channel 123 may be connected in sequence, thereby allowing fluid to flow into the liquid storage tank 122 through the second channel 123 and out of the liquid storage tank 122 through the first channel 121; or allowing fluid to flow into the liquid storage tank 122 through the first channel 121 and out of the liquid storage tank 122 through the second channel 123.

[0141] In some examples, the first channel 121, the liquid reservoir 122, and the second channel 123 can be connected end to end. In some examples, the first channel 121 and the second channel 123 can be connected to any position on the liquid reservoir 122. In some examples, the first channel 121, the liquid reservoir 122, and the second channel 123 can be connected by at least one of fusion welding and bonding.

[0142] In some examples, the first channel 121 can be in communication with the second channel 123. In some examples, the first channel 121 can be in communication with the liquid reservoir 122. In some examples, the second channel 123 can be in communication with the liquid reservoir 122.

[0143] In some examples, the first channel 121, the liquid reservoir 122, and the second channel 123 may be interconnected. In some examples, the first channel 121, the liquid reservoir 122, and the second channel 123 may be in fluid communication. This provides a path for the flow of fluid. In some examples, fluid communication may mean that the first channel 121, the liquid reservoir 122, and the second channel 123 are in communication and fluid can flow between the first channel 121, the liquid reservoir 122, and the second channel 123.

[0144] In some examples, the drug reservoir can be in communication with the liquid reservoir 122. In some examples, the drug reservoir can be in fluid communication with the liquid reservoir 122. In some examples, the drug reservoir can be in communication with the liquid reservoir 122 via the second channel 123. In some examples, the drug reservoir, the second channel 123, and the liquid reservoir 122 can be connected in sequence. In some examples, the drug reservoir, the second channel 123, and the liquid reservoir 122 can be integrally formed.

[0145] In some examples, referring to FIG. 2 , the substrate 15 may include a first fixing portion 151 , and the first fixing portion 151 may be configured to fix the first channel 121 .

[0146] 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 a 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, there may be multiple fixing grooves, for example, two, four, or six. Preferably, the first fixing portion 151 may have two fixing grooves. This allows for more stable fixing of the first channel 121.

[0147] In some examples, the size of the fixing groove on the first fixing portion 151 can be equal to or smaller than the size of the first channel 121. This can more stably fix the first channel 121. In other examples, the size of the fixing groove can be larger than the size of the first channel 121.

[0148] In other examples, the substrate 15 may not have the first fixing portion 151. In some examples, the first channel 121 may be fixed to the substrate 15 by one or more methods selected from the group consisting of suction, bonding, and fusion welding.

[0149] In some examples, referring to FIG2 , the substrate 15 may further include a second fixing portion 152, which may be configured to fix the liquid reservoir 122. In some examples, referring to FIG2 , the substrate 15 may include a third fixing portion 153, which may be configured to fix the second channel 123. The description of how the second fixing portion 152 fixes the liquid reservoir 122 and the third fixing portion 153 fixes the second channel 123 can be referred to the description of how the first fixing portion 151 fixes the first channel 121, and will not be repeated here.

[0150] To facilitate understanding of the present disclosure, the following description uses as an example a case where fluid flows out of the fluid delivery device 1 via the first channel 121 (i.e., the first channel 121 is a liquid outlet channel) and fluid flows into the fluid delivery device 1 via the second channel 123 (i.e., the second channel 123 is a liquid inlet channel). However, it should be noted that the above definitions are intended to more clearly illustrate the present disclosure and should not be construed as limiting the present disclosure. The description of the present disclosure also applies to the case where the first channel 121 is a liquid inlet channel and the second channel 123 is a liquid outlet channel.

[0151] In some examples, the fluid in fluid channel 12 can be actuated to be delivered into the body of target 2. In some examples, the fluid can be actuated by an actuation force. In some examples, the fluid can be actuated by one or more of squeezing, pushing, suctioning, and pulling.

[0152] In some examples, referring to FIG. 2 , the fluid delivery device 1 can include an actuation assembly 13. In some examples, the actuation assembly 13 can be configured to actuate the fluid. This can cause the fluid to flow in the fluid channel 12 and facilitate the flow of a predetermined volume of fluid into or out of the fluid reservoir 122. In some examples, the actuation assembly 13 can be configured to provide an actuation force to cause the fluid to flow into or out of the fluid reservoir 122. In some examples, the actuation assembly 13 can actuate the fluid in the fluid channel 12 or the fluid within the subject 2.

[0153] In some examples, the actuating assembly 13 can act on a fluid. In some examples, the actuating force can act on the fluid. For example, the actuating assembly 13 can be a piston in the fluid channel 12. Thus, the actuating assembly 13 can directly actuate the fluid.

[0154] In some examples, actuation assembly 13 can act on fluid channel 12. In some examples, an actuation force can act on fluid channel 12. In some examples, fluid channel 12 can actuate the fluid in fluid channel 12 under the action of the actuation force. Thus, actuation assembly 13 can actuate the fluid through fluid channel 12.

[0155] In some examples, referring to FIG2 , at least a portion of the actuating assembly 13 may be disposed in the fluid channel 12 , thereby facilitating the actuating assembly 13 to act on the fluid channel 12 .

[0156] In some examples, the actuation force can be configured to increase the pressure in the fluid reservoir 122 , thereby facilitating the flow of fluid out of the fluid reservoir 122 .

[0157] In some examples, the actuation force can also be configured to reduce the pressure in the fluid reservoir 122 , thereby facilitating the flow of fluid into the fluid reservoir 122 .

[0158] In some examples, the liquid reservoir 122 can be deformed. In some examples, the liquid reservoir 122 can be deformed under the action of an actuation force.

[0159] In some examples, the actuation force may act directly on the liquid reservoir 122 to deform the liquid reservoir 122. In some examples, the liquid reservoir 122 may deform to reduce its volume. In some examples, the amount of deformation of the liquid reservoir 122 may be equal to the reduced volume. In some examples, when the liquid reservoir 122 deforms to reduce its volume, the fluid may flow out of the liquid reservoir 122. For example, the liquid reservoir 122 may be recessed toward the interior space to squeeze the fluid, and the fluid may flow out of the liquid reservoir 122 under the squeezing of the liquid reservoir 122. This can help to precisely control the volume of the fluid flowing out of the liquid reservoir 122.

[0160] In some examples, the liquid reservoir 122 can deform to increase its volume. In some examples, the amount of deformation of the liquid reservoir 122 can be equal to the increased volume. In some examples, when the liquid reservoir 122 deforms to increase its volume, fluid can flow into the liquid reservoir 122. For example, the liquid reservoir 122 can expand toward the external space to draw fluid, and the fluid can flow into the liquid reservoir 122 under the suction of the liquid reservoir 122. This can help accurately control the volume of fluid flowing into the liquid reservoir 122.

[0161] FIG3A is a schematic diagram showing the actuator 131 according to an example of the present disclosure acting on the liquid storage tank 122 and deforming the liquid storage tank 122. FIG3B is a schematic diagram showing the liquid storage tank 122 according to an example of the present disclosure returning to its original state. FIG3C is a schematic diagram showing another embodiment of the actuator 131 according to an example of the present disclosure. FIG3D is a schematic diagram showing another embodiment of the actuator 131 according to an example of the present disclosure.

[0162] In some examples, referring to FIG3A or FIG3B , the actuation assembly 13 may include an actuation member 131. In some examples, the actuation member 131 may be configured as an actuation fluid. In some examples, the actuation member 131 may provide an actuation force.

[0163] In some examples, the actuator 131 may act on a fluid.

[0164] In some examples, the actuator 131 may act on the fluid channel 12 .

[0165] In some examples, at least a portion of the actuator 131 can be disposed within the fluid channel 12. In some examples, the actuator 131 can actuate the fluid by one or more of squeezing, pushing, suction, and pulling. For example, referring to FIG3C , the actuator 131 can be a piston disposed within the fluid channel 12, and can deliver the fluid by pushing. For another example, when the fluid is magnetic, the actuator 131 can be a magnet disposed outside the fluid channel 12, and can deliver the fluid by pulling.

[0166] In some examples, referring to FIG. 3A , actuator 131 can act on liquid reservoir 122. In some examples, actuator 131 can actuate liquid reservoir 122. In some examples, liquid reservoir 122 can be deformed under the action of actuator 131. In some examples, actuator 131 can deform liquid reservoir 122 to reduce or increase the volume of liquid reservoir 122.

[0167] In some examples, actuating the liquid reservoir 122 may mean that the liquid reservoir 122 is deformed or in the process of being deformed. In some examples, stopping actuating the liquid reservoir 122 may mean that the liquid reservoir 122 is no longer deformed or is not in the process of being deformed. For example, actuating the liquid reservoir 122 may mean that the actuating member 131 gradually squeezes or pulls the liquid reservoir 122, and stopping actuating the liquid reservoir 122 may mean that the actuating member 131 no longer continues to squeeze or pull the liquid reservoir 122. For another example, actuating the liquid reservoir 122 may mean that in the process of the actuating member 131 moving away from the liquid reservoir 122, the liquid reservoir 122 gradually returns to its original state due to the characteristics of its own material, and stopping actuating the liquid reservoir 122 may mean that the liquid reservoir 122 has returned to its original state.

[0168] 3A or 3B , the actuator 131 may move toward or away from the liquid reservoir 122. In some examples, as the actuator 131 moves toward or away from the liquid reservoir 122, the liquid reservoir 122 may deform, i.e., the volume of the liquid reservoir 122 may change.

[0169] 3A , the volume of the liquid storage tank 122 may be reduced by causing the liquid storage tank 122 to sag inward. For example, the actuator 131 may intrude into the liquid storage tank 122 to cause the liquid storage tank 122 to sag inward.

[0170] In some examples, referring to FIG3B , the volume of the liquid storage tank 122 may be increased by expanding the liquid storage tank 122 outwards. For example, the liquid storage tank 122 may return to its original shape after being recessed.

[0171] In some examples, restoring the liquid reservoir 122 to its original state may mean restoring the liquid reservoir 122 to its factory-fresh state. In some examples, the liquid reservoir 122 may restore to its original state through its own action, such as through the elasticity of its own material. In some examples, the liquid reservoir 122 may also restore to its original state through the action of the actuator 131. For example, the actuator 131 may be connected to the liquid reservoir 122, and when the actuator 131 moves away from the liquid reservoir 122, it may cause the recessed portion of the liquid reservoir 122 to expand outward to restore to its original state.

[0172] 3A , the actuator 131 can deform the liquid reservoir 122 by direct contact. For example, the actuator 131 can squeeze or pull the liquid reservoir 122 to deform the liquid reservoir 122 .

[0173] In other examples, referring to FIG3D , the actuator 131 can deform the liquid reservoir 122 in a non-contact manner. For example, the actuator 131 and the liquid reservoir 122 can be made of magnetic materials. Thus, based on the principle that like poles repel or unlike poles attract, the actuator 131 can deform the liquid reservoir 122 without contacting the liquid reservoir 122.

[0174] In some examples, the liquid reservoir 122 can be deformed to a predetermined deformation amount. In some examples, when the liquid reservoir 122 is deformed to a predetermined deformation amount, the liquid reservoir 122 can provide or receive a predetermined volume of fluid. In other words, the predetermined deformation amount can be equal to the predetermined volume.

[0175] As described above, the actuator 131 can intrude into the liquid reservoir 122. In some examples, the amount of intrusion of the actuator 131 can be equal to the deformation of the liquid reservoir 122. In this case, by adjusting the intrusion of the actuator 131, the volume of the fluid provided by the liquid reservoir 122 can be adjusted.

[0176] In some examples, when the actuator 131 causes the liquid reservoir 122 to deform by a predetermined amount, the actuator 131 may be located at a first predetermined position (see FIG. 3A ); when the liquid reservoir 122 returns to its original shape, the actuator 131 may be located at a second predetermined position (see FIG. 3B ). That is, the first predetermined position may be the position of the actuator 131 when the liquid reservoir 122 deforms by the predetermined amount, and the second predetermined position may be the position of the actuator 131 when the liquid reservoir 122 returns to its original shape.

[0177] In some examples, during the process of moving from the first preset position to the second preset position or from the second preset position to the first preset position, the actuator 131 may move a preset distance. In some examples, after moving the preset distance, the actuator 131 may 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 actuator 131 may move in a translational or rotational manner.

[0178] 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 as needed. For example, a larger preset distance can be set so that the actuator 131 is 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 same applies to the preset angles described later, and therefore will not be repeated here.

[0179] In some examples, the actuator 131 may be made of at least one of stainless steel, aluminum alloy, polyamide, polyetheretherketone, and titanium alloy, thereby improving the corrosion resistance and robustness of the actuator 131 .

[0180] In some examples, the thickness of the actuator 131 can be 1 mm to 2 mm. For example, the thickness of the 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. Preferably, the thickness of the actuator 131 can be 1.5 mm.

[0181] In some examples, the thickness of the actuator 131 can be equal to the width of the contact surface between the actuator 131 and the liquid reservoir 122. In some examples, the thickness of the actuator 131 can be greater than or equal to the outer diameter of the liquid reservoir 122. This allows the liquid reservoir 122 to fully contact the actuator 131, thereby improving the actuation effect of the actuator 131.

[0182] In some examples, referring to FIG3A , actuator 131 may include an actuating portion 1311. In some examples, actuator 131 may act on liquid reservoir 122 via actuating portion 1311. In some examples, actuating portion 1311 may actuate liquid reservoir 122. In some examples, at least a portion of actuating portion 1311 may intrude into liquid reservoir 122.

[0183] In some examples, the actuator 131 can have a first end 1312 (see FIG. 3A ). In some examples, an actuation force can act on the first end 1312 to actuate the actuator 131 .

[0184] In some examples, the actuator 131 can move in a swinging manner. In some examples, referring to FIG3A and FIG3B , the actuator 131 can have a central fulcrum A. In some examples, the actuator 131 can swing 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, which helps to extend the service life of the fluid delivery device 1.

[0185] 3A and 3B , the fluid delivery device 1 can have a central axis CA. In some examples, a central fulcrum A can be located on the central axis CA.

[0186] In some examples, the actuator 131 may be fixed to the substrate 15 via a central fulcrum A.

[0187] In some examples, the first end 1312 may be an end of the actuator 131 that is close to the first rod 132 (described later).

[0188] In some examples, actuator 131 may have a second end 1313 (see FIG. 3A ). In some examples, an actuating force may act on second end 1313 to actuate actuator 131. In some examples, second end 1313 may be an end of actuator 131 that is adjacent to second rod 133 (described later).

[0189] In some examples, the central fulcrum A can be located between the first end 1312 and the second end 1313. In some examples, the central fulcrum A, the first end 1312, and the second end 1313 can be located on the same straight line.

[0190] Fig. 4A is a schematic diagram showing that the first rod 132 according to an example of the present disclosure is located at a third preset position. Fig. 4B is a schematic diagram showing that the first rod 132 according to an example of the present disclosure is located at a fourth preset position.

[0191] In some examples, actuation assembly 13 may include a first rod 132 (see FIG. 4A or FIG. 4B ). In some examples, first rod 132 may be configured to transmit an actuation force. In some examples, first rod 132 may receive an actuation force. In some examples, first rod 132 may provide an actuation force.

[0192] In some examples, referring to FIG. 4A , first rod 132 can act on actuator 131. In some examples, first rod 132 can transmit an actuating force to actuator 131. In some examples, first rod 132 can provide an actuating force to actuator 131. In some examples, first rod 132 can actuate actuator 131. In some examples, first rod 132 can actuate actuator 131 toward fluid reservoir 122. In some examples, first rod 132 can actuate actuator 131 to actuate the fluid in fluid reservoir 122. In some examples, actuation can be achieved by pushing or pulling.

[0193] In some examples, the first rod 132 may act directly on the fluid in the fluid reservoir 122 .

[0194] In some examples, referring to FIG. 2 , the first rod 132 may be movably disposed on the substrate 15 . In some examples, the first rod 132 may be a rocker rod, meaning that 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 FIG. 4A or 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.

[0195] In some examples, as shown in FIG4A , when first rod 132 swings to move actuator 131 a predetermined distance, first rod 132 may be located at a third predetermined position. As shown in FIG4B , when first rod 132 returns to its original position, first rod 132 may be located at a fourth predetermined position. In some examples, during movement from the third predetermined position to the fourth predetermined position or from the fourth predetermined position to the third predetermined position, the swing angle of first rod 132 may be a predetermined angle.

[0196] In some examples, the third preset position may be the position of the first rod 132 after pushing the actuator 131 to move the actuator 131 a preset distance, and the fourth preset position may be the position of the first rod 132 after it is reset.

[0197] In some examples, the first rod 132 actuating the actuator 131 to move the actuator 131 a preset distance may mean that the first rod 132 and the first retaining member 171 (described later) jointly actuate the actuator 131 to move the preset distance, or the first rod 132 actuates the actuator 131 to move the preset distance.

[0198] In some examples, the first rod 132 and the first retaining member 171 jointly actuating the actuator 131 to move the preset distance may mean that the first rod 132 first actuates the actuator 131 to move a certain distance, and then the first retaining member 171 actuates the actuator 131 to move a certain distance, wherein the sum of the actuation distances of the first rod 132 and the actuation distances of the first retaining member 171 is the preset distance. In this case, when the first rod 132 is in the third preset position, the actuator 131 is not in the first preset position.

[0199] In some examples, the first rod 132 actuating the actuator 131 to move the preset distance may mean that the actuator 131 is actuated to move the preset distance only by the first rod 132. In this case, when the first rod 132 is at the third preset position, the actuator 131 is at the first preset position.

[0200] For the convenience of description, it can be considered that after the first rod 132 swings a preset angle, the actuating member 131 can move a preset distance.

[0201] Fig. 5A is a schematic diagram showing that the second rod 133 according to the example of the present disclosure is located at a third preset position. Fig. 5B is a schematic diagram showing that the second rod 133 according to the example of the present disclosure is located at a fourth preset position.

[0202] In some examples, referring to FIG. 5A or FIG. 5B , the actuating assembly 13 may include a second rod 133. The description of the second rod 133, the second fulcrum P2, and the principle by which the second rod 133 actuates the actuating member 131 may refer to the description of the first rod 132. The following only describes the differences between the second rod 133 and the first rod 132, and identical or similar contents are not repeated.

[0203] In some examples, the second rod 133 can actuate the actuator 131 to move away from the fluid reservoir 122. In some examples, the second rod 133 can actuate the fluid in the first channel 121 and / or the second channel 123 by actuating the actuator 131.

[0204] In some examples, the second rod 133 may directly act on the fluid in the first channel 121 and / or the second channel 123 .

[0205] In some examples, referring to FIG5A or FIG5B , 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 base plate 15 via the second fulcrum P2.

[0206] 2 , the actuation assembly 13 may include a power source 134 , thereby enabling the actuation assembly 13 to provide an actuation force.

[0207] In some examples, power source 134 can be configured to provide an actuating force. In some examples, power source 134 can provide an actuating force to actuator 131. In some examples, power source 134 can also provide an actuating force to first rod 132. In some examples, power source 134 can also provide an actuating force to second rod 133. The following description uses the example of power source 134 providing power to first rod 132.

[0208] In some examples, referring to FIG. 2 , power source 134 may include a first power assembly 1341 .

[0209] In some examples, first power assembly 1341 can be configured to actuate first rod 132. In some examples, first power assembly 1341 can act on first rod 132. In some examples, first power assembly 1341 can provide actuating force for first rod 132. In some examples, first rod 132 can swing under the action of first power assembly 1341. In some examples, first power assembly 1341 can be connected to first rod 132.

[0210] In some examples, the first power assembly 1341 can cause the actuation force to act on the actuating member 131 through the first rod 132 .

[0211] In some examples, the first power assembly 1341 may also be configured to actuate the first valve 141 (described later).

[0212] In some examples, the first power assembly 1341 can be a memory metal drive device. In some examples, at least a portion of the first power assembly 1341 can be made of a shape memory metal material.

[0213] In some examples, the shape memory metal material can expand or contract after its temperature changes. In some examples, the shape memory metal material can be nickel titanium alloy.

[0214] The following description assumes that the shape memory metal material is nickel-titanium alloy, that is, the shape memory metal material can be contracted by increasing its temperature, and can be expanded by decreasing its temperature.

[0215] In some examples, the first power assembly 1341 can include a first memory wire, a first power source, and a first controller.

[0216] In some examples, the first memory wire may be made of a shape memory metal material.

[0217] In some examples, the length of the first memory metal wire may be 20 mm to 40 mm. For example, the length of the first memory metal wire may be 20 mm, 25 mm, 30 mm, 35 mm, or 40 mm. Preferably, the length of the first memory metal wire may be 30 mm.

[0218] In some examples, the first power source can provide electrical energy to the first memory wire.

[0219] In some examples, the first controller can control the shape change of the first memory wire. Specifically, because the temperature of the first memory wire varies depending on the duration of power on and off, as well as the magnitude of the current flowing through the first memory wire when powered on, the first controller can control the first power supply to control the duration of power on and off, as well as the magnitude of the current flowing through the first memory wire, thereby controlling the shape change of the first memory wire. For example, the power on duration can be extended or the current can be increased, thereby causing the first memory wire to heat up and contract.

[0220] In some examples, first power assembly 1341 can actuate first rod 132 via a first memory wire. In some examples, the first memory wire can act on first rod 132. In some examples, the first memory wire can be connected to first rod 132. In some examples, the first memory wire can actuate first rod 132 by contracting or expanding itself.

[0221] In some examples, the first power assembly 1341 may also include a servo motor, an electromagnetic drive mechanism, or other devices that can provide power.

[0222] In some examples, as shown in FIG2 , power source 134 can include a pulley 1343. In some examples, a first memory wire can be wound around pulley 1343. If the length of the first memory wire meets actuation requirements, the pulley 1343 structure can improve the space utilization of the first memory wire, thereby making the first power assembly 1341 more compact, facilitating miniaturization of the fluid delivery device 1.

[0223] As described above, one side of the substrate 15 can be adhered to the surface of the target 2. In some examples, the first memory metal wire can be disposed on a side of the substrate 15 that is away from the surface of the target 2. In this case, since the degree of contraction of the first memory metal wire is temperature-dependent, the effect of the temperature of the target 2 on the first memory metal wire can be reduced, thereby facilitating the normal operation of the fluid delivery device 1.

[0224] 2 , the power source 134 may include a second power assembly 1342. For details on the structure, material, and coordination between the second power assembly 1342 and the second rod 133, reference may be made to the description of the first power assembly 1341 and are not repeated herein.

[0225] In some examples, the second power assembly 1342 may include a second memory wire, a second power source, and a second controller. The principles of interaction between the second memory wire, the second power source, and the second controller, as well as the materials and dimensions of the second memory wire, can be found in the description of the first power source, the first controller, and the first memory wire, and are not further elaborated here.

[0226] As described above, referring to FIG2 , the fluid delivery device 1 may include a flow restriction assembly 14 that can restrict the flow of a fluid. In some examples, restricting the flow of a fluid may refer to restricting at least one of a flow rate, a flow velocity, and a flow direction of the fluid. In some examples, the flow restriction assembly 14 can restrict the flow of the fluid in the fluid channel 12. In some examples, the flow restriction assembly 14 can squeeze the fluid channel 12 to restrict the flow of the fluid.

[0227] In some examples, the flow restriction assembly 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 restriction assembly 14 can help the fluid flow along a desired path.

[0228] In some examples, the flow restriction assembly 14 can restrict the flow of the fluid in the first channel 121 . In some examples, the flow restriction assembly 14 can also restrict the flow of the fluid in the second channel 123 .

[0229] In some examples, the actuating assembly 13 can provide an actuating force in response to the flow-limiting assembly 14 opening the first channel 121 and / or the second channel 123. In this case, the liquid reservoir 122 is first connected to the first channel 121 and / or the second channel 123, and then the actuating assembly 13 provides the actuating force, thereby helping to improve the utilization rate of the actuating force.

[0230] In some examples, the flow restriction assembly 14 may include a valve disposed on the flow path of the fluid in the first channel 121 and / or the second channel 123. In some examples, the flow restriction assembly 14 may act on the first channel 121 and / or the second channel 123 to close or open the flow path of the fluid.

[0231] 2 , the flow restriction assembly 14 may include a first valve 141. In some examples, the first valve 141 may be disposed on a fluid outflow side of the fluid delivery device 1. In some examples, the first valve 141 may be disposed on a fluid flow path in the first channel 121.

[0232] In some examples, first valve 141 may be configured to control fluid flow within first channel 121 .

[0233] In some examples, first valve 141 can switch states in response to actuation of first power assembly 1341. In some examples, first valve 141 can also switch states in response to pushing of first rod 132. In some examples, first valve 141 can also switch states in response to the flow of fluid.

[0234] In some examples, the first valve 141 may be an active valve or a passive valve.

[0235] In some examples, the first valve 141 may be any one of a one-way valve and a two-way valve.

[0236] In some examples, the first valve 141 may be at least one of a gate valve, a check valve, a non-return valve, a globe valve, a ball valve, and a diaphragm valve. Preferably, the first valve 141 may be a gate valve.

[0237] In some examples, the first valve 141 can include two states: open and closed. That is, the first valve 141 can have an open state and a closed state. In some examples, the open state can refer to the state of the first valve 141 when fluid can flow into or out of the liquid storage tank 122 via the first channel 121. In some examples, the closed state can refer to the state of the first valve 141 when fluid cannot flow into or out of the liquid storage tank 122 via the first channel 121.

[0238] In some examples, referring to FIG. 2 , the first valve 141 may include a first opening and closing member 1411 , and the first opening and closing member 1411 may be configured to control the first valve 141 to be opened or closed.

[0239] In some examples, referring to FIG. 4A , when the first valve 141 is in the open state, the first opening and closing member 1411 may be located in the fifth preset position; and referring to FIG. 4B , when the first valve 141 is in the closed state, the first opening and closing member 1411 may be located in the sixth preset position. In some examples, the first opening and closing member 1411 may be moved from the fifth preset position to the sixth preset position to switch the first valve 141 from the open state to the closed state; and the first opening and closing member 1411 may be moved from the sixth preset position to the fifth preset position to switch the first valve 141 from the closed state to the activated state. In some examples, the fifth preset position may be the position of the first opening and closing member 1411 after the first valve 141 is opened, and the sixth preset position may be the position of the first opening and closing member 1411 after the first valve 141 is closed.

[0240] In some examples, since the first opening and closing member 1411 can continue to move after the first valve 141 is opened, there can be multiple fifth preset positions.

[0241] In some examples, when the first opening and closing member 1411 is located at the fifth preset position, the first opening and closing member 1411 may not squeeze the first channel 121, and the first channel 121 may return to its original state, thereby opening the first valve 141.

[0242] In some examples, when the first opening and closing member 1411 is in the sixth preset position, the first opening and closing member 1411 can squeeze the first channel 121 to deform the first channel 121. In some examples, under the squeezing of the first opening and closing member 1411, the inner walls of the first channel 121 can fit together to seal the interior space, thereby closing the first valve 141.

[0243] In some examples, as the first opening and closing member 1411 moves from the fifth preset position to the sixth preset position, the first channel 121 may be gradually squeezed. In this case, by controlling the movement distance of the first opening and closing member 1411, the degree of squeezing of the first channel 121 can be controlled, thereby controlling the degree to which the first valve 141 restricts the fluid in the first channel 121.

[0244] In some examples, the first valve 141 may be a knife gate valve, and the first opening and closing member 1411 may be a gate disc of the knife gate valve. In some examples, the height of the gate disc of the knife gate valve may be between 2 mm and 4 mm. For example, the height may be 2 mm, 2.5 mm, 3 mm, 3.5 mm, or 4 mm. Preferably, the height of the gate disc of the knife gate valve may be 3 mm. In some examples, the first opening and closing member 1411 may be made of at least one of carbon steel and stainless steel.

[0245] In some examples, referring to FIG. 2 , the first valve 141 may have a first engaging portion 1412. In some examples, the first engaging portion 1412 may be provided on the first valve 141. In some examples, the first rod 132 may have a first mating portion 1321. In some examples, the first engaging portion 1412 may mate with the first mating portion 1321. In some examples, the profile of the first engaging portion 1412 may be similar to or identical to the profile of the first mating portion 1321.

[0246] In some examples, referring to FIG2 , the contours of the first engaging portion 1412 and the first matching portion 1321 can be arcuate. In this case, since the direction of the force exerted by the first rod 132 on the first opening and closing member 1411 changes as the first rod 132 swings, the arcuate structure of the first engaging portion 1412 and the first matching portion 1321 can increase the component of the force exerted by the first rod 132 in the direction of movement of the first opening and closing member 1411, thereby helping to reduce energy consumption.

[0247] In some examples, referring to FIG. 2 , the flow limiting assembly 14 may include a second valve 142. In some examples, the second valve 142 may be disposed on the side of the fluid delivery device 1 into which the fluid flows. In some examples, the second valve 142 may be disposed along the flow path of the fluid in the second channel 123. The operating principles of the second valve 142 and the second valve 142 can be referenced to the description of the first valve 141 and are not further elaborated here.

[0248] 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.

[0249] 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 FIG. 2 ). 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, at a position of 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, at a position of the second channel 123 near the liquid storage tank 122.

[0250] As described above, the first channel 121 can be connected to the liquid reservoir 122. In some examples, the first channel 121 can be connected to the liquid reservoir 122 via a first valve 141. As described above, the second channel 123 can be connected to the liquid reservoir 122. In some examples, the second channel 123 can be connected to the liquid reservoir 122 via a second valve 142.

[0251] In some examples, the second valve 142 may include a second opening and closing member 1421, which may be configured to control the opening or closing of the second valve 142. The principle of how the second opening and closing member 1421 controls the opening or closing of the second valve 142 may refer to the description of the first opening and closing member 1411, and will not be repeated here.

[0252] In some examples, the second valve 142 may have a second engaging portion 1422. In some examples, the second rod 133 may have a second mating portion 1331. The mating relationship and operating principle of the second engaging portion 1422 and the second mating portion 1331 can be referenced to the description of the first engaging portion 1412 and the first mating portion 1321, and will not be repeated here.

[0253] 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 engaging portion 1412 , and the first rod 132 may not have the first matching portion 1321 , and the same applies to the second valve 142 .

[0254] Figure 6A is a schematic diagram showing that the liquid reservoir 122 provides fluid when the valve involved in the example of the present disclosure is a passive valve. Figure 6B is a schematic diagram showing that the liquid reservoir 122 receives fluid when the valve involved in the example of the present disclosure is a passive valve.

[0255] As described above, the first valve 141 and / or the second valve 142 may also be passive valves. In some examples, the first valve 141 and / or the second valve 142 may be one-way valves.

[0256] In some examples, referring to FIG. 6A , when the liquid storage tank 122 provides fluid, the pressure of the fluid in the liquid storage tank 122 rises, thereby opening the first valve 141 and moving the first opening and closing member 1411 to the fifth preset position. At the same time, the opening of the second valve 142 can be suppressed, and the second opening and closing member 1421 is maintained at the sixth preset position.

[0257] In some examples, referring to FIG. 6B , when the liquid storage tank 122 receives fluid, the pressure of the fluid in the liquid storage tank 122 drops, the second valve 142 can be opened, and the second opening and closing member 1421 moves to the fifth preset position. At the same time, the opening of the first valve 141 can be suppressed, and the first opening and closing member 1411 is maintained at the sixth preset position.

[0258] FIG. 7 is a schematic diagram illustrating a first limiting portion 1413 according to an example of the present disclosure.

[0259] In some examples, referring to FIG. 7 , the first valve 141 may have a first limiting portion 1413 .

[0260] In some examples, the first limiter 1413 can be configured to limit the position of the first valve 141. In some examples, the first limiter 1413 can be provided on the first opening and closing member 1411. In some examples, the size of the first limiter 1413 can be equal to or slightly larger than the size of the first channel 121.

[0261] 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 and closing member 1411. In some examples, the first opening and closing member 1411 may move along the path limited by the first limiting portion 1413.

[0262] In some examples, the first channel 121 can pass through the first limiting portion 1413. In some examples, the first opening and closing member 1411 can move relative to the first channel 121 and along a guide path of the first limiting portion 1413.

[0263] In some examples, the second valve 142 may have a second position-limiting portion. In some examples, the second position-limiting portion may be configured to limit the position of the second valve 142. For details about the second position-limiting portion, reference may be made to the description of the first position-limiting portion 1413 and will not be repeated here.

[0264] In some examples, the first power assembly 1341 can actuate the first opening and closing member 1411 to move from the sixth preset position to the fifth preset position (i.e., the first valve 141 is open). In some examples, the first power assembly 1341 can actuate the actuator 131 to move the actuator 131 from the second preset position to the first preset position.

[0265] 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 liquid reservoir 122. Specifically, in response to the actuating force provided by the first power assembly 1341, the first valve 141 can be opened, and the actuator 131 can act on the liquid reservoir 122.

[0266] In some examples, during the process of first power assembly 1341 providing actuating force, first opening and closing member 1411 can move from the sixth preset position to the fifth preset position, and actuator 131 can move from the second preset position to the first preset position. That is, after providing actuating force, first power assembly 1341 can open first valve 141 and simultaneously actuate actuator 131, causing actuator 131 to move a preset distance and squeeze liquid reservoir 122, ultimately causing liquid reservoir 122 to deform by a preset amount. In this case, actuation of first power assembly 1341 can cause liquid reservoir 122 to provide a preset volume of fluid.

[0267] In some examples, the first rod 132 can transmit the actuating force provided by the first power assembly 1341. In this case, the lever structure formed by the first rod 132 can increase the torque generated by the actuating force by increasing the lever arm, thereby reducing the energy consumption of the fluid delivery device 1 and extending its service life.

[0268] In some examples, referring to FIG. 4A , the first power assembly 1341 can actuate the first lever 132 to move from the fourth preset position to the third preset position. In some examples, the first lever 132 can actuate the first opening and closing member 1411 to move from the sixth preset position to the fifth preset position. In some examples, the first lever 132 can actuate the actuating member 131 to move from the second preset position to the first preset position.

[0269] In some examples, the first power assembly 1341, the first rod 132, the first valve 141, and the actuator 131 can be linked. In some examples, the first power assembly 1341 can actuate the first rod 132, thereby opening the first valve 141 and causing the actuator 131 to act on the liquid reservoir 122. Specifically, in response to the actuating force provided by the first power assembly 1341, the first rod 132 can move from the fourth preset position to the third preset position. During the movement of the first rod 132, the first valve 141 can be opened, and the actuator 131 can act on the liquid reservoir 122.

[0270] In some examples, during the movement of the first rod 132 from the fourth preset position to the third preset position, the first opening and closing member 1411 may move from the sixth preset position to the fifth preset position, and the actuator 131 may move from the second preset position to the first preset position. In other words, after swinging through a preset angle, the first rod 132 can push and open the first valve 141, while simultaneously pushing the actuator 131, causing it to move a preset distance and squeeze the liquid reservoir 122, causing the liquid reservoir 122 to deform by a preset amount. In this case, actuation of the first power assembly 1341 can cause the liquid reservoir 122 to provide a preset volume of fluid.

[0271] It should be noted that due to the characteristics of shape memory metal materials, the actuation force will gradually decrease, and the swing angle of the first rod 132 will gradually decrease. Therefore, as the fluid delivery device 1 is used, the third preset position can be changed. 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.

[0272] In some examples, the second power assembly 1342 can actuate the second opening and closing member 1421 to move from the sixth preset position to the fifth preset position (i.e., the second valve 142 is open). In some examples, the second power assembly 1342 can actuate the actuator 131 to move the actuator 131 from the first preset position to the second preset position.

[0273] In some examples, second power assembly 1342, second valve 142, and actuator 131 can be linked. In some examples, second power assembly 1342 can open second valve 142 and restore liquid reservoir 122 to its original state. Specifically, in response to second power assembly 1342 providing an actuating force, second valve 142 can be opened and liquid reservoir 122 can be restored to its original state.

[0274] In some examples, during the process of second power assembly 1342 providing actuating force, second opening and closing member 1421 can move from the sixth preset position to the fifth preset position, and actuator 131 can move from the first preset position to the second preset position. In other words, after providing actuating force, second power assembly 1342 can open second valve 142 and simultaneously actuate actuator 131 to move a preset distance away from liquid reservoir 122, ultimately returning liquid reservoir 122 to its original position. In this case, actuation of second power assembly 1342 can cause liquid reservoir 122 to receive a preset volume of fluid.

[0275] In some examples, the second rod 133 can transmit the actuating force provided by the second power assembly 1342. In this case, the lever structure formed by the second rod 133 can increase the torque generated by the actuating force by increasing the lever arm, thereby reducing the energy consumption of the fluid delivery device 1 and extending its service life.

[0276] In some examples, referring to FIG. 5A , second power assembly 1342 can actuate second lever 133 to move from a fourth preset position to a third preset position. In some examples, second lever 133 can actuate second opening / closing member 1421 to move from a sixth preset position to a fifth preset position. In some examples, second lever 133 can actuate actuator 131 to move from a first preset position to a second preset position.

[0277] In some examples, the second power assembly 1342, the second rod 133, the second valve 142, and the actuator 131 can be coordinated. In some examples, the second power assembly 1342 can actuate the second rod 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 rod 133 can move from the fourth preset position to the third preset position. During the movement of the second rod 133, the second valve 142 can be opened and the liquid reservoir 122 can be restored to its original state.

[0278] In some examples, during the movement of the second rod 133 from the fourth preset position to the third preset position, the second opening and closing member 1421 may move from the sixth preset position to the fifth preset position, and the actuator 131 may move from the first preset position to the second preset position. In other words, after swinging through a preset angle, the second rod 133 can push and open the second valve 142, while simultaneously pushing the actuator 131 to move a preset distance away from the liquid reservoir 122, thereby restoring the liquid reservoir 122 to its original position. In this case, actuation of the second power assembly 1342 allows the liquid reservoir 122 to receive a preset volume of fluid.

[0279] It should be noted that when the fluid conveying device 1 only has the first channel 121, or only has the first channel 121 and the liquid storage tank 122, the actuating assembly 13 may not have the second rod 133 and the second power assembly 1342, and the flow limiting assembly 14 may not have the second valve 142.

[0280] In some examples, the flow restriction assembly 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; and 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, the fluid can flow into or out of the liquid reservoir 122 through one of the first channel 121 and the second channel 123, thereby achieving directional flow of the fluid.

[0281] 2 , 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 restriction assembly 14. In some examples, the reset assembly 16 may push or pull the flow restriction assembly 14.

[0282] In some examples, referring to FIG. 2 , the restoring assembly 16 may include a first restoring member 161 .

[0283] In some examples, first return member 161 can be configured to switch the state of first valve 141. In some examples, first valve 141 can switch states in response to actuation of first return member 161. In some examples, first return member 161 can actuate first valve 141 in response to first power assembly 1341 ceasing to provide actuation force.

[0284] 4B , the first restoring member 161 may close the first valve 141 . In some examples, the first restoring member 161 may be provided at the first valve 141 .

[0285] In some examples, the first valve 141 and the first rod 132 can be linked. In some examples, after the first power assembly 1341 stops providing the actuating 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 rod 132 from the third preset position to the fourth preset position via the first valve 141 to reset the first rod 132.

[0286] In some examples, the first restoring member 161 can actuate the first opening and closing member 1411 to move from the fifth preset position to the sixth preset position (ie, the first valve 141 is closed).

[0287] In some examples, one end of the first restoring member 161 may be connected to the first opening and closing member 1411 . In some examples, the other end of the first restoring member 161 (ie, the end not connected to the first opening and closing member 1411 ) may be fixed to the base plate 15 .

[0288] In some examples, the first power assembly 1341 can actuate the first rod 132 to move from the third preset position to the fourth preset position. Specifically, the first power assembly 1341 can be extended after power is cut off, thereby actuating the first rod 132 to move from the third preset position to the fourth preset position.

[0289] In some examples, the first reset member 161 can be one of a coil spring, a suspension spring, or a pressure spring. In some examples, the first reset member 161 can also be a servo motor or other device that can provide power.

[0290] In some examples, the length of the first restoring member 161 can be 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 restoring member 161 can be 3 mm.

[0291] In some examples, the reset assembly 16 may include a second reset member 162 (see FIG. 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, as well as the functional relationship 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 are not further elaborated here.

[0292] As described above, the flow-limiting assembly 14 can alternately open the first channel 121 and the second channel 123. Specifically, after the first return member 161 closes the first valve 141, the second rod 133 can open the second valve 142 and actuate the actuating member 131 to move toward the second preset position, allowing the liquid reservoir 122 to receive the fluid. After the liquid reservoir 122 receives the preset volume of fluid, the second return member 162 can close the second valve 142. After the second valve 142 is closed, the first rod 132 can open the first valve 141 and actuate the actuating member 131 to move toward the first preset position, allowing the liquid reservoir 122 to supply the fluid. After the liquid reservoir 122 supplies the preset volume of fluid, the first return member 161 can close the first valve 141.

[0293] 2 , the fluid delivery device 1 can include a retaining assembly 17 . In some examples, the retaining assembly 17 can be configured to retain the position of the actuator 131 .

[0294] In some examples, referring to FIG4B or FIG5B , the holding assembly 17 can hold the actuator 131 at the first preset position or the second preset position, thereby facilitating the liquid reservoir 122 to provide or receive a preset volume of fluid.

[0295] In some examples, the retaining assembly 17 can be detachably or releasably connected to the actuator 131. In some examples, the retaining assembly 17 can be connected to the actuator 131 by one or more of attraction, adhesion, snap-fitting, and frictional connection. For example, magnets can be provided on the retaining assembly 17 and the actuator 131 to attract the two. In another example, an adhesive layer can be provided on the retaining assembly 17 and the actuator 131 to adhere the two. In another example, the retaining assembly 17 and the actuator 131 can be snap-fitted to each other using at least one of a snap, hook, latch, or pin. In another example, the retaining assembly 17 and the actuator 131 can be a male-female mating structure and can be maintained in connection by friction between the surfaces of the two.

[0296] In some examples, the retaining assembly 17 can be configured to provide an actuation force. In some examples, the retaining assembly 17 can act on the actuating member 131. In some examples, the retaining assembly 17 can provide an actuation force to the actuating member 131.

[0297] In some examples, the retaining assembly 17 can actuate the actuator 131 to move a preset distance. In some examples, the retaining assembly 17 can actuate the actuator 131 together with the first rod 132 or the second rod 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, providing the actuating force through the retaining assembly 17 can reduce the actuating force required from the shape-memory metal material and thus reduce the energy consumption of the fluid delivery device 1.

[0298] In some examples, retaining assembly 17 can include a first retaining member 171. In some examples, first retaining member 171 can be configured to retain actuator 131 in a first predetermined position. In some examples, first retaining member 171 can retain the position of first end 1312. In some examples, when first end 1312 approaches or contacts first retaining member 171, first retaining member 171 can connect with first end 1312 to maintain the position of first end 1312. In some examples, when first end 1312 is connected to first retaining member 171, actuator 131 can be located in the first predetermined position.

[0299] Fig. 8A is a schematic diagram showing that the first holder 171 according to an example of the present disclosure actuates the first end 1312. Fig. 8B is a schematic diagram showing that the second holder 172 according to an example of the present disclosure actuates the second end 1313.

[0300] In some examples, first retainer 171 may be configured to actuate first end 1312 .

[0301] In some examples, when the first end 1312 approaches the first retainer 171 (eg, see FIG. 8A , when the first rod 132 pushes the first end 1312 toward the first retainer 171 ), the first retainer 171 may provide an actuating force to the first end 1312 .

[0302] 8A and 4A , under the action of first retainer 171, first end 1312 can move toward first retainer 171 until connected to first retainer 171. Specifically, first end 1312 can move from the position in FIG. 8A to the position in FIG. 4A .

[0303] In some examples, the first retaining member 171 can be fixed to the substrate 15. Thus, the first retaining member 171 can more stably maintain the position of the first end 1312 or provide an actuating force.

[0304] In some examples, the first retaining member 171 may be disposed on a side close to the first end 1312. In some examples, the first retaining member 171 may be disposed in a moving path of the first end 1312. In some examples, the first retaining member 171 may be disposed above or below the first end 1312. Preferably, the first retaining member 171 may be disposed below the first end 1312.

[0305] In some examples, first retaining member 171 may be a magnet, and first end 1312 may be magnetic. Thus, first retaining member 171 can attract first end 1312. In some examples, first retaining member 171 may be a permanent magnet, for example, at least one of a ferrite magnet, a neodymium iron boron magnet, and a cobalt hard magnet.

[0306] In some examples, the actuator 131 may be at least partially made 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 material or a weakly magnetic material.

[0307] In other examples, the actuator 131 may also be made of a non-ferromagnetic material or a weakly magnetic material. In some examples, the first end 1312 may be coated with a ferromagnetic material to magnetically secure the first end 1312 to the first retaining member 171. Specifically, the ferromagnetic material may be coated on the surface of the first end 1312 facing the first retaining member 171.

[0308] In some examples, retaining assembly 17 may include a second retaining member 172. In some examples, second retaining member 172 may be configured to retain actuator 131 in the second preset position. In some examples, second retaining member 172 may be configured to actuate second end 1313 (see Figures 8B and 5A). The functional relationship between second retaining member 172 and second end 1313 can be referenced to the description of the functional relationship between first retaining member 171 and first end 1312, and will not be further elaborated here.

[0309] In some examples, in response to the first rod 132 providing an actuating force, the first valve 141 may be opened, the first end 1312 may be connected to the first retaining member 171, and the second end 1313 may be disconnected from the second retaining member 172. In some examples, in response to the first rod 132 ceasing to provide an actuating force, the first valve 141 may be closed by the first return member 161, and the first end 1312 may remain connected to the first retaining member 171.

[0310] In some examples, in response to the second rod 133 providing an actuating force, the second valve 142 may be opened, the second end 1313 may be connected to the second retaining member 172, and the first end 1312 may be disconnected from the first retaining member 171. In some examples, in response to the second rod 133 ceasing to provide an actuating force, the second valve 142 may be closed by the second return member 162, and the second end 1313 may remain connected to the second retaining member 172.

[0311] In some examples, when the first end 1312 is connected to the first retaining member 171, the first end 1312 can be in electrical communication with the first retaining member 171. In some examples, after the power source 134 provides the actuating force, whether the first channel 121 is blocked can be determined by detecting whether the first end 1312 is in electrical communication with the first retaining member 171. Specifically, after the power source 134 provides the actuating force, the actuating member 131 can move to the first preset position and enable the liquid reservoir 122 to provide a preset volume of fluid. If the first channel 121 is blocked, the liquid reservoir 122 will not be able to provide the preset volume of fluid, and the liquid reservoir 122 will not be able to continue to deform, which will hinder the movement of the actuating member 131, thereby causing the first end 1312 of the actuating member 131 to be unable to connect to the first retaining member 171. Therefore, the blockage can be determined by the electrical communication.

[0312] In some examples, when the second end 1313 is connected to the second retaining member 172, the second end 1313 can be in electrical communication with the second retaining member 172. In some examples, after the power source 134 provides the actuating force, whether the second channel 123 is blocked can be determined by detecting whether the second end 1313 is in electrical communication with the second retaining member 172. Specifically, after the power source 134 provides the actuating force, 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, and the liquid reservoir 122 will not be able to continue to deform, which will hinder the movement of the actuator 131, thereby causing the second end 1313 of the actuator 131 to be unable to connect to the second retaining member 172. Therefore, the blockage can be determined by the electrical communication. 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 2, it is also convenient to directly obtain the blockage condition of the second channel 123.

[0313] In some examples, the first retaining member 171 can apply a first retaining force to the first end 1312. In some examples, the second retaining member 172 can apply a second retaining force to the second end 1313. In some examples, the first retaining force can be greater than the second retaining force. In this case, because the force exerted by the liquid reservoir 122 on the actuator 131 when it is in the first preset position is greater than the force exerted by the liquid reservoir 122 when it is in the second preset position, by making the first retaining force greater than the second retaining force, the first retaining member 171 can more stably retain the actuator 131 in the first preset position, thereby helping the liquid reservoir 122 provide a preset volume of fluid.

[0314] In other examples, the first retaining force may be less than or equal to the second retaining force.

[0315] As described above, first retaining member 171 can be configured to actuate first end 1312. In some examples, a first magnetic attraction distance can exist between first end 1312 and first retaining member 171. In some examples, when the relative distance between first end 1312 and first retaining member 171 is less than or equal to the first magnetic attraction distance, first end 1312 can approach first retaining member 171 under the attraction of first retaining member 171 until it connects with first retaining member 171.

[0316] As described above, the first rod 132 and the first retaining member 171 can jointly actuate the actuator 131. Specifically, when the first rod 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 retaining member 171 is less than or equal to the first magnetic attraction distance. In this case, the actuator 131 is actuated by the first rod 132 and attracted to the first end 1312 by the first retaining member 171, thereby moving the actuator 131 by the preset distance.

[0317] As described above, the actuating member 131 may be actuated only by the first rod 132 . Specifically, when the first rod 132 moves from the fourth preset position to the third preset position, it may actuate the actuating member 131 until the first end 1312 is connected to the first retaining member 171 .

[0318] In some examples, a second magnetic attraction distance can be defined between the second end 1313 and the second retaining member 172. In some examples, when the relative distance between the second end 1313 and the second retaining member 172 is less than or equal to the second magnetic attraction distance, the second end 1313 can be attracted by the second retaining member 172 and move closer to the second retaining member 172 until it connects with the second retaining member 172. The description of how the second rod 133 and the second retaining member 172 actuate the actuator 131 can be referenced to the description of the first rod 132 and the first retaining member 171, and is not repeated here.

[0319] As described 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.

[0320] In other examples, the first magnetic attraction distance may be less than or equal to the second magnetic attraction distance.

[0321] 9A is a schematic diagram showing the puncture mechanism 182 of the first embodiment of the application assembly 18 according to the present disclosure entering the target 2. FIG9B is a schematic diagram showing the puncture mechanism 182 of the first embodiment of the application assembly 18 according to the present disclosure exiting the target 2.

[0322] As described above, fluid delivery device 1 can apply itself to the body surface of target 2 through its own structure. In some examples, fluid delivery device 1 can also be applied to the body surface of target 2 through external factors. In some examples, fluid delivery device 1 can also be applied to the body surface of target 2 through both its own structure and external factors. In some examples, the external factor can refer to any device, equipment, or person that can provide driving force.

[0323] In some examples, fluid delivery device 1 can include an application assembly 18 (see FIG9A and FIG9B ). In some examples, application assembly 18 can be configured to apply at least a portion of the components of fluid delivery device 1 to target 2. In some examples, application assembly 18 can place at least a portion of fluid channel 12 subcutaneously in target 2.

[0324] In other examples, the fluid delivery device 1 may not include the application component 18 . The application component 18 may be a component independent of the fluid delivery device 1 , that is, the application component 18 may be the external factor mentioned above.

[0325] In some examples, the applying assembly 18 can include a driving mechanism 181 (see Figures 9A and 9B). In some examples, the driving mechanism 181 can be configured to provide a driving force.

[0326] In some examples, drive mechanism 181 can act on at least a portion of fluid channel 12 and / or a puncture mechanism 182 (described later).

[0327] In other examples, the application assembly 18 may not include the driving mechanism 181, and the driving force acting on the fluid channel 12 and / or the puncture mechanism 182 may be provided by external factors. For example, the driving force provided by the external factors may be power provided by the device or manpower.

[0328] The following description will be made by taking the driving mechanism 181 acting on the first channel 121 as an example.

[0329] In some examples, the driving mechanism 181 can drive the first channel 121. In some examples, the driving mechanism 181 can drive the first channel 121 toward the target 2. In some examples, the driving mechanism 181 can drive the first channel 121 into and be placed under the skin of the target 2.

[0330] In some examples, the driving mechanism 181 can include a driving source 1811 (see Figures 9A and 9B). In some examples, the driving source 1811 can be configured to provide a driving force. In some examples, the number of the driving source 1811 can be one or more.

[0331] In some examples, drive source 1811 can accumulate driving force. In some examples, the driving force of drive source 1811 can be accumulated before the fluid delivery device 1 is shipped. In some examples, the driving force of drive source 1811 can also be accumulated by the user before using the fluid delivery device 1. In some examples, drive source 1811 can be a spring. For example, it can be a tension spring or a torsion spring.

[0332] In other examples, the driving source 1811 may also be a servo motor or other device that can provide power.

[0333] In some examples, one end of the driving source 1811 can be connected to the first channel 121. In some examples, the other end of the driving source 1811 can be fixed to the substrate 15 or to the housing of the fluid delivery device 1.

[0334] 9A and 9B , the driving mechanism 181 can include a transmission member 1812. In some examples, the transmission member 1812 can be configured to change the direction of the driving force.

[0335] In some examples, the transmission member 1812 can be configured to transmit a driving force. In some examples, the transmission member 1812 can receive a driving force from the driving source 1811. In some examples, the transmission member 1812 can provide a driving force to the first channel 121.

[0336] In some examples, the driving source 1811 can be connected to the first channel 121 through a transmission member 1812 .

[0337] In some examples, application assembly 18 may include a puncture mechanism 182 (see Figures 9A and 9B). In some examples, puncture mechanism 182 may be configured to penetrate subcutaneously within target 2. In some examples, puncture mechanism 182 may carry at least a portion of fluid channel 12 into the subcutaneous region of target 2. This facilitates placement of fluid channel 12 into the subcutaneous region of target 2. In some examples, puncture mechanism 182 may carry first channel 121 into the subcutaneous region of target 2.

[0338] In some examples, the direction in which puncture mechanism 182 penetrates the subcutaneous tissue of target 2 may be at an angle to the surface of target 2. In some examples, the angle may be between 5 and 85 degrees. For example, it may be 30, 40, 60, or 80 degrees. In this case, by puncturing mechanism 182 obliquely into the subcutaneous tissue of target 2, inflammation or scab formation on target 2 can be suppressed.

[0339] In other examples, the direction in which the puncture mechanism 182 penetrates the subcutaneous tissue of the target 2 may also be perpendicular to the body surface of the target 2 .

[0340] In some examples, the first channel 121 can accommodate the puncture mechanism 182. In some examples, the first channel 121 can be sleeved on the puncture mechanism 182.

[0341] In other examples, the first channel 121 can be accommodated in the puncture mechanism 182. In some examples, the puncture mechanism 182 can be sleeved on the first channel 121.

[0342] In other examples, when the first channel 121 is made of a hard material, the fluid delivery device 1 may not include the puncture mechanism 182 , and the first channel 121 can penetrate into the subcutaneous tissue of the target 2 due to the hardness of its own material.

[0343] In some examples, the piercing mechanism 182 can include a sharp object. In some examples, the first channel 121 can accommodate at least a portion of the sharp object.

[0344] In other examples, the first channel 121 can also accommodate a sharp object. In some examples, the sharp object can have a receiving groove extending along the length of the sharp object. In some examples, at least a portion of the first channel 121 can be accommodated in the receiving groove.

[0345] In some examples, drive mechanism 181 can act on puncture mechanism 182. In some examples, drive mechanism 181 can drive puncture mechanism 182. In some examples, drive mechanism 181 can drive puncture mechanism 182 toward target 2. In some examples, drive mechanism 181 can also drive puncture mechanism 182 away from target 2. In some examples, drive mechanism 181 can drive puncture mechanism 182 to penetrate the subcutaneous tissue of target 2 and drive puncture mechanism 182 away from target 2 to withdraw puncture mechanism 182 from the subcutaneous tissue of target 2. In some examples, drive mechanism 181 can be connected to puncture mechanism 182.

[0346] In some examples, the puncture mechanism 182 can carry the first channel 121 to puncture the subcutaneous tissue of the target 2. In some examples, after the puncture mechanism 182 punctures the subcutaneous tissue of the target 2, the first channel 121 can be placed under the subcutaneous tissue of the target 2.

[0347] As described above, the number of driving sources 1811 can be one or more. For example, when there is one driving source 1811, one driving source 1811 can drive the puncture mechanism 182 toward the target 2 and drive the puncture mechanism 182 away from the target 2. For another example, when there are two driving sources 1811, one driving source 1811 can drive the puncture mechanism 182 toward the target 2 and the other driving source 1811 can drive the puncture mechanism 182 away from the target 2.

[0348] In some examples, the transmission member 1812 can provide driving force to the piercing mechanism 182 .

[0349] In some examples, the driving source 1811 can be connected to the puncture mechanism 182 via a transmission member 1812 .

[0350] In some examples, application assembly 18 can include a guide mechanism 183 (see Figures 9A and 9B). In some examples, guide mechanism 183 can be configured to provide a guide path. In some examples, guide mechanism 183 can guide first channel 121. In some examples, first channel 121 can move along the guide path. In some examples, at least a portion of first channel 121 can be movably connected to a guide rail.

[0351] In some examples, the guide mechanism 183 may extend toward the body surface of the target 2. In some examples, the guide mechanism 183 may be a guide rail.

[0352] In some examples, application assembly 18 may include a locking mechanism. In some examples, the locking mechanism may be configured to lock drive mechanism 181 before subject 2 utilizes fluid delivery device 1. In some examples, locking drive mechanism 181 may mean preventing the accumulated driving force of drive mechanism 181 from being released. In some examples, the locking mechanism may release drive mechanism 181, and after the locking mechanism releases drive mechanism 181, drive mechanism 181 may release the accumulated driving force.

[0353] The following description will be made by taking the application assembly 18 including the driving mechanism 181 and the puncture mechanism 182 as an example.

[0354] In some examples, referring to FIG9A , the transmission member 1812 may be two connecting blocks and two connecting rods. In some examples, one end of the two connecting rods may be movably connected to the two connecting blocks, respectively, and the other ends of the two connecting rods may be movably connected to the puncture mechanism 182 together.

[0355] In some examples, the driving source 1811 can be a tension spring. In some examples, both ends of the tension spring can be fixed to the two connecting blocks respectively.

[0356] 9A , when the locking mechanism locks the driving mechanism 181 , the tension spring may be in a compressed state. In some examples, the puncture mechanism 182 may be manually inserted into the subcutaneous tissue of the target 2 along the first direction D1 .

[0357] In some examples, referring to FIG. 9B , after puncture mechanism 182 is manually inserted into the subcutaneous tissue of target 2, the locking mechanism can release drive mechanism 181, causing the tension spring to extend and provide a driving force, which can be an axial force. In some examples, the tension spring can push the two connecting blocks to move away from each other in third directions D3′ and D3″, respectively. The two connecting blocks pull the two connecting rods to pull puncture mechanism 182 in a second direction D2 away from target 2. This allows first channel 121 to be placed subcutaneously in target 2.

[0358] FIG10A is a schematic diagram illustrating the puncture mechanism 182 of the second embodiment of the application assembly 18 according to an example of the present disclosure before entering the target 2. FIG10B is a schematic diagram illustrating the puncture mechanism 182 of the second embodiment of the application assembly 18 according to an example of the present disclosure after entering the target 2. FIG10C is a schematic diagram illustrating the puncture mechanism 182 of the second embodiment of the application assembly 18 according to an example of the present disclosure after exiting the target 2.

[0359] In some examples, referring to FIG10A , the transmission member 1812 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 puncture mechanism 182 can be fixed to the connecting rod. In some examples, the connecting rod can be roughly C-shaped.

[0360] In some examples, the portion of the guide mechanism 183 provided on the cylinder can be a groove. In some examples, both ends of the connecting rod can be located in the groove.

[0361] In some examples, the driving source 1811 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 an end of the cylinder away from the puncture mechanism 182.

[0362] In some examples, referring to FIG. 10A , when the locking mechanism locks the driving mechanism 181 , the torsion spring can be in a compressed state.

[0363] In some examples, referring to FIG10B , when the locking mechanism releases the driving mechanism 181, the torsion spring can extend and provide a driving force, which can be a circumferential force. In some examples, the cylinder can rotate in a third direction D3 under the action of the driving force, and the connecting rod can move in a first direction D1 toward the target 2 or in a second direction D2 away from the target 2 under the guidance of the groove.

[0364] In some examples, referring to FIG. 10B , when the groove guide link moves toward the target 2 , the link pushes the piercing mechanism 182 to move toward the target 2 along the first direction D1 to penetrate the target 2 .

[0365] In some examples, as shown in FIG10C , after the puncture mechanism 182 penetrates the target 2, the cylinder can continue to rotate in the third direction D3, the groove guides the connecting rod to move in the second direction D2 away from the target 2, and the connecting rod pulls the puncture mechanism 182 to move in the second direction D2 away from the target 2. In this way, the first channel 121 can be placed subcutaneously in the target 2.

[0366] FIG11A is a schematic diagram illustrating the puncture mechanism 182 of the third embodiment of the application assembly 18 according to an example of the present disclosure before entering the target 2. FIG11B is a schematic diagram illustrating the puncture mechanism 182 of the third embodiment of the application assembly 18 according to an example of the present disclosure entering the target 2. FIG11C is a schematic diagram illustrating the puncture mechanism 182 of the third embodiment of the application assembly 18 according to an example of the present disclosure exiting the target 2. FIG11D is a schematic diagram illustrating the drive source 1811 of the third embodiment of the application assembly 18 according to an example of the present disclosure.

[0367] In some examples, referring to FIG11A , the transmission member 1812 may be a cam and a push rod. In some examples, the driving source 1811 may be a torsion spring and a tension spring. In some examples, one end of the torsion spring may be fixed to the cam (see FIG11D ), and one end of the tension spring may be fixed to the push rod.

[0368] In some examples, when the locking mechanism locks the driving mechanism 181 , the torsion spring may be in a compressed state and the tension spring may be in a natural state (see FIG. 11A ).

[0369] In some examples, referring to FIG11B , when the locking mechanism releases the driving mechanism 181, the torsion spring can extend and provide a driving force, which can be a circumferential force. In some examples, the cam can rotate in the 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 and thereby push the puncture mechanism 182 along the guide direction (i.e., the first direction D1) of the guide mechanism 183 toward the target 2 to penetrate the target 2.

[0370] In some examples, referring to FIG. 11C , after the puncture mechanism 182 penetrates the target 2, the cam may continue to rotate in the third direction D3 and separate from the push rod, causing the tension spring to no longer be compressed and to extend to push the push rod in the second direction D2, thereby pushing the puncture mechanism 182 to move in the second direction D2 away from the target 2. Thus, the first channel 121 can be placed subcutaneously in the target 2.

[0371] 12A is a schematic diagram showing the puncture mechanism 182 of the fourth embodiment of the application assembly 18 according to the present disclosure entering the target 2. FIG12B is a schematic diagram showing the puncture mechanism 182 of the fourth embodiment of the application assembly 18 according to the present disclosure exiting the target 2.

[0372] In some examples, referring to FIG12A or FIG12B , the driving source 1811 can be a torsion spring. In some examples, one end of the torsion spring can be fixed to the puncture mechanism 182. The other end of the torsion spring can be fixed to the housing of the fluid delivery device 1.

[0373] In some examples, the number of torsion springs may be one or more.

[0374] 12A , when the locking mechanism locks the driving mechanism 181 , the torsion spring may be in a compressed or stretched state. In some examples, the puncture mechanism 182 may be manually inserted into the subcutaneous tissue of the target 2 along the first direction D1 .

[0375] In some examples, referring to FIG. 12B , after the puncture mechanism 182 is manually inserted into the subcutaneous tissue of the target 2, the locking mechanism can release the driving mechanism 181, and the torsion spring can extend and provide a driving force. The directions of the driving forces of the two torsion springs can be in the third directions D3′ and D3″, respectively. In some examples, under the guidance of the guide mechanism 183, the torsion spring can pull the puncture mechanism 182 to move along the second direction D2 away from the target 2. In this way, the first channel 121 can be placed under the subcutaneous tissue of the target 2.

[0376] 13A is a schematic diagram showing the puncture mechanism 182 of the fifth embodiment of the application assembly 18 according to the present disclosure entering the target 2. FIG13B is a schematic diagram showing the puncture mechanism 182 of the fifth embodiment of the application assembly 18 according to the present disclosure exiting the target 2.

[0377] In some examples, referring to FIG13A or FIG13B , the driving source 1811 can be a vortex spring. In some examples, one end of the vortex spring can be fixed to the puncture mechanism 182. The other end of the vortex spring can be fixed to the housing of the fluid delivery device 1.

[0378] In some examples, as shown in Figure 13A, when the locking mechanism locks the driving mechanism 181, the vortex spring can be in a compressed or stretched state. In some examples, the puncture mechanism 182 can be manually inserted into the subcutaneous tissue of the target 2 along the first direction D1.

[0379] In some examples, as shown in FIG13B , after puncture mechanism 182 is manually inserted into the subcutaneous tissue of target 2, the locking mechanism can release drive mechanism 181, causing the vortex spring to extend and provide a driving force. The driving force of the vortex spring can be directed in a second direction D2. In some examples, guided by guide mechanism 183, the vortex spring can pull puncture mechanism 182 in the second direction D2 away from target 2. This allows first channel 121 to be placed subcutaneously within target 2.

[0380] 14A is a schematic diagram showing the puncture mechanism 182 of the sixth embodiment of the application assembly 18 according to the present disclosure entering the target 2. FIG14B is a schematic diagram showing the puncture mechanism 182 of the sixth embodiment of the application assembly 18 according to the present disclosure exiting the target 2.

[0381] In some examples, referring to FIG14A or FIG14B , the driving source 1811 can be a spring sheet. In some examples, one end of the spring sheet can be fixed to the puncture mechanism 182. The other end of the spring sheet can be fixed to the housing of the fluid delivery device 1.

[0382] In some examples, the number of the spring leaves may be one or more.

[0383] In some examples, as shown in Figure 14A, the spring sheet may be in a compressed or stretched state when the locking mechanism locks the driving mechanism 181. In some examples, the puncture mechanism 182 may be manually inserted into the subcutaneous tissue of the target 2 along the first direction D1.

[0384] In some examples, as shown in FIG14B , after puncture mechanism 182 is manually inserted into the subcutaneous tissue of target 2, the locking mechanism can release drive mechanism 181, causing the spring to extend and provide a driving force. The driving force of the spring can be directed in a third direction D3. In some examples, guided by guide mechanism 183, the spring can pull puncture mechanism 182 in a second direction D2 away from target 2. This allows first channel 121 to be placed subcutaneously in target 2.

[0385] According to the present disclosure, a fluid delivery device 1 capable of quantitatively delivering fluid is provided.

[0386] Although the present disclosure has been described in detail above with reference to the accompanying drawings and examples, it will be understood that the above description does not limit the present disclosure in any form. Those skilled in the art may modify and change the present disclosure as needed without departing from the spirit and scope of the present disclosure, and such modifications and variations all fall within the scope of the present disclosure.

Claims

1. A fluid delivery device, characterized in that: It includes a fluid channel, an actuating assembly and a flow limiting assembly, wherein the fluid channel includes a first channel, a fluid storage tank and a second channel connected by fluid, the actuating assembly is configured to provide an actuating force to make the fluid flow into or out of the fluid storage tank, and the flow limiting assembly is configured to open or close the first channel and / or the second channel.

2. The fluid delivery 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 delivery device according to claim 1, wherein: The first channel, the liquid storage tank and the second channel are integrally formed.

4. The fluid delivery device according to claim 1, wherein: The actuation assembly includes a power source configured to provide an actuation force.

5. The fluid delivery device according to claim 1, wherein: The actuating force acts on 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 delivery device according to claim 1, wherein: The actuation force acts on the fluid.

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

8. The fluid delivery device according to claim 7, characterized in that: The liquid storage bin is deformed to reduce its volume.

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

10. The fluid delivery device according to claim 9, characterized in that: The liquid storage bin is deformed to increase its volume.

11. The fluid delivery device according to claim 1, wherein: The actuating force acts on the liquid storage tank to increase or decrease the volume of the liquid storage tank.

12. The fluid delivery device according to claim 1, wherein: The liquid storage bin is made of elastic material.

13. The fluid delivery device according to claim 1, wherein: The flow restriction component restricts the flow of fluid in the first channel and / or the second channel.

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

15. The fluid delivery device according to claim 1, wherein: The flow restriction component acts on the first channel and / or the second channel to close or open a flow path of the fluid.

16. The fluid delivery device according to claim 1, wherein: In response to the flow restriction assembly opening the first passage and / or the second passage, the actuation assembly provides an actuation force.

17. The fluid delivery device according to claim 1, wherein: The current limiting component opens the first channel and the second channel alternately.

18. The fluid delivery device according to claim 1, wherein: A retaining assembly is included that is configured to maintain the position of the actuating assembly and provide an actuating force.

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