Fluid conveying device and fluid conveying system

Abstract

The invention discloses a fluid conveying device and a fluid conveying system. The fluid conveying device comprises a base part, a fluid storage part, a fluid conveying part and a fluid guiding part, wherein the base part is applied to a target; the fluid storage part is arranged on the base part and is used for storing fluid; the fluid conveying part is arranged on the base part and is used for pumping the fluid from the fluid storage part; the base part comprises a first face part close to a target and a second face part far away from the target, the second face part is used for bearing and fixing the fluid storage part and the fluid conveying part, and the fluid guiding part is communicated with the fluid storage part and the fluid conveying part, penetrates through the base part and is partially arranged in the target; the fluid delivery portion is configured such that a predetermined volume of fluid is obtained from the fluid storage portion and / or such that the predetermined volume of fluid is provided from the fluid guide portion to a target in a volume switching manner. Thus, by means of the fluid delivery device and the fluid delivery system, safer quantitative fluid infusion can be provided for a target.

Description

Technical Field

[0001] The present disclosure generally relates to the field of medical devices, and more particularly to a fluid delivery device and a fluid delivery system. Background Art

[0002] Many chronic diseases often cause corresponding complications, such as chronic diabetes can cause complications related to blood sugar. In order to delay and reduce the rapid or continuous impact of chronic diseases on patients, automatic injection drug delivery technology can be used on patients.

[0003] In the existing drug delivery technology, portable drug delivery systems are widely used, which usually require a subcutaneous tube to be implanted. When the abnormality of the patient's physiological characteristics reaches an early warning, the patient can input the dose of the injected drug through a controller and connect the drug pump filled with the drug solution to the previously reserved tube for drug delivery. The inventor also knows an infusion device and a delivery method, wherein the infusion device can include a fluid reservoir and a percutaneous access tool, and the percutaneous access tool is configured to deliver the therapeutic fluid to the patient's subcutaneous tissue.

[0004] Although this solution can achieve quantitative fluid delivery (i.e., quantitative drug delivery control) by controlling the rate at which the fluid is infused into the driving fluid storage device, this type of direct driving of the fluid storage device for fluid delivery lacks mechanical safety constraints, which is not conducive to the efficacy and safety of medication. For example, when insulin is under-dosed, it is easy to lead to poor therapeutic effects, and when it is over-dosed, it is easy to cause glucose intake disorders in diabetic patients and even life-threatening situations. Summary of the invention

[0005] The present disclosure is proposed in view of the above situation, and its purpose is to provide a fluid delivery device and a fluid delivery system that can provide a safer quantitative fluid infusion for a target.

[0006] To this end, a first aspect of the present disclosure provides a fluid delivery device, comprising a fluid storage portion for storing fluid, a fluid delivery portion for obtaining fluid from the fluid storage portion, and a fluid guiding portion for guiding fluid from the fluid delivery portion to the target, wherein the fluid guiding portion connects the fluid storage portion and the fluid delivery portion and is configured to be partially disposed in the target, and the fluid delivery portion is configured to obtain a predetermined volume of fluid from the fluid storage portion and / or provide a predetermined volume of fluid from the fluid guiding portion to the target in a manner of switching volume.

[0007] In the fluid delivery device involved in the first aspect of the present disclosure, the fluid is stored in a fluid storage unit, and the fluid delivery unit obtains a predetermined volume of fluid from the fluid storage unit via a fluid guide unit and continues to guide and deliver the predetermined volume of fluid to a target via the fluid guide unit. In this case, the fluid is first obtained from the fluid storage unit and pre-stored in the fluid delivery unit, and then the fluid is discharged by actuating the fluid delivery unit, thereby forming a mechanical safety constraint to provide a safer quantitative fluid infusion for the target.

[0008] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the fluid delivery part includes a pump body, a pusher and a resetter, the pusher is connected to the button and drives the pump body to switch from the first volume to the second volume when the button is pressed down a predetermined stroke, and the resetter is connected to the pusher and is charged to drive the pusher to return to the initial position when the pusher drives the pump body to switch from the first volume to the second volume. In this case, the pump body can be switched between the first volume and the second volume by the pusher and the resetter cooperating to actuate the pump body, thereby obtaining a predetermined volume of fluid from the fluid storage part or providing a predetermined volume of fluid from the fluid delivery part to the target through the fluid guide part; in addition, by pressing the button down a predetermined stroke, it can serve as a control signal to trigger the volume switching between the first volume and the second volume.

[0009] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the fluid delivery part includes a pump body, a pusher and a resetter, the pusher is connected to the knob and drives the pump body to switch from the first volume to the second volume when the knob is rotated by a predetermined angle, and the resetter is connected to the pusher and is charged to drive the pusher to return to the initial position when the pusher drives the pump body to switch from the first volume to the second volume. In this case, the pump body can switch the volume between the first volume and the second volume by cooperating with the pusher and the resetter to actuate the pump body, thereby obtaining a predetermined volume of fluid from the fluid storage part or providing a predetermined volume of fluid from the fluid delivery part to the target through the fluid guide part; in addition, by rotating the knob by a predetermined angle, it can serve as a control signal to trigger the volume switching between the first volume and the second volume.

[0010] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the fluid delivery part includes a pump body and a first actuator, and the first actuator drives the pump body to switch from a first volume to a second volume. In this case, by actuating the pump body by the first actuator, the pump body can automatically switch the volume between the first volume and the second volume, thereby automatically obtaining a predetermined volume of fluid from the fluid storage part or automatically providing a predetermined volume of fluid to the target via the fluid delivery part and the fluid guide part, that is, the automation and intelligence of the fluid delivery device can be improved.

[0011] In addition, the fluid delivery device according to the first aspect of the present disclosure may optionally further include a base configured to be applied to a target, the base including a first face close to the target and a second face away from the target, the second face being used to carry and fix the fluid storage portion and the fluid delivery portion, and the first face having flexibility and / or curvature adapted to the surface of the target. In this case, the fluid storage portion, the fluid delivery portion, and the fluid guide portion may be mounted on the base, and when the fluid delivery device carries a large amount of fluid and causes the fluid delivery device to be larger in size, the fluid delivery device may still be able to adapt to the surface of the target so as to be fixed on the target, that is, the fluid delivery device may be able to reduce the inconvenience of carrying due to the volume of the fluid delivery device by increasing the surface fit when fixed to the target.

[0012] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the first surface has a viscous material layer, and when the first surface is close to the target, it adheres to the surface of the target through the viscous material layer. In this case, the fluid delivery device can be easily fixed to the surface of the target by adhesion and the distance between the fluid delivery device and the target can be reduced, thereby reducing the length of the fluid delivery path, thereby making it easier to carry the fluid delivery device.

[0013] In addition, the fluid delivery device according to the first aspect of the present disclosure may further include a housing, wherein the housing cooperates with the second surface portion to form a chamber for accommodating the fluid storage portion, the fluid delivery portion, and the fluid guiding portion. In this case, the fluid storage portion, the fluid delivery portion, and the fluid guiding portion can be protected by the housing.

[0014] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the area of ​​the base is larger than the area of ​​the second surface and the shell. In this case, the large-area base can improve the stability of the fluid delivery device adhering to the surface of the target, and at the same time, it can also make the shell more completely cover the fluid storage part, the fluid delivery part and the fluid guide part, thereby improving the stability of the fluid delivery device.

[0015] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the fluid guide portion includes a hollow needle at least partially disposed in the target, and the predetermined volume of fluid provided by the fluid delivery portion is delivered to the target through the hollow needle. In this case, since the diameter of the hollow needle is relatively small, between the diameter of the capillary tube, the fluid is delivered to the target through the hollow needle, which can reduce the trauma caused to the target during the fluid delivery process.

[0016] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the fluid guide portion includes a hose at least partially disposed in the target, and the predetermined volume of fluid provided by the fluid delivery portion is delivered to the target through the hose. In this case, since the diameter of the hose is larger than that of the hollow needle and larger than the capillary diameter, the rate of fluid delivery can be increased by delivering the fluid to the target through the hose, for example, the rate of delivering drugs for diseases can be increased, thereby improving the treatment effect.

[0017] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the housing has a through hole, and the through hole is arranged near the fluid storage part. In this case, the through hole can facilitate the observation of the use of the fluid in the fluid storage part, and can also facilitate the fluid replenishment operation of the fluid storage part.

[0018] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the fluid storage part includes a liquid storage tank and a second actuator that actuates the liquid storage tank to maintain a predetermined pressure, and the liquid storage tank has a liquid infusion port that matches the through hole. In this case, when the fluid storage part is infused with liquid through the liquid infusion port, the liquid storage tank can maintain a predetermined pressure under the action of the second actuator, thereby reducing the occurrence of bubbles formed by the atmosphere entering the liquid storage tank; at the same time, the liquid storage tank is maintained at a predetermined pressure by the second actuator, which can also facilitate the fluid in the liquid storage tank to smoothly enter the fluid delivery part, thereby improving the accuracy and stability of fluid delivery.

[0019] In addition, according to the fluid delivery device involved in the first aspect of the present disclosure, optionally, the fluid storage portion includes a reservoir mounting portion provided on the second surface portion and a reservoir detachably provided on the reservoir mounting portion through the through hole. In this case, if the target needs to deliver a large amount of fluid, the fluid can be stored in advance in a plurality of reservoirs detachably provided on the reservoir mounting portion, thereby making it easier for the target to carry a large amount of fluid and deliver the fluid for a long time.

[0020] In addition, the fluid delivery device according to the first aspect of the present disclosure may optionally further include an active module, which transmits the usage information of the fluid in the fluid storage unit to an external control terminal via wireless communication. In this case, the fluid delivery device and the control terminal can form a fluid delivery system, thereby enabling closed-loop control of the fluid delivery process through the fluid delivery system to improve the accuracy of fluid delivery.

[0021] The second aspect of the present disclosure provides a fluid delivery system, comprising an analyte sensor for acquiring analyte concentration data in a target, a control terminal for receiving and analyzing the analyte concentration data, and any of the fluid delivery devices described in the first aspect of the present disclosure, wherein the analyte sensor, the control terminal, and the fluid delivery device are connected to each other in a wireless communication manner, and the control terminal is further configured to receive the usage information of the fluid of the fluid delivery device, and provide the target with safety constraints for fluid delivery based on the analyte concentration data and the usage information of the fluid. In this case, the fluid delivery system can be used to perform closed-loop control of the fluid delivery, thereby improving the accuracy and safety of the fluid delivery.

[0022] According to the present disclosure, a fluid delivery device and a fluid delivery system are provided that can provide a safer quantitative fluid infusion to a target. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present disclosure will now be explained in further detail, by way of example only, with reference to the accompanying drawings, in which:

[0024] Figure 1 It is a schematic diagram showing an application scenario of the fluid delivery device involved in the example of the present disclosure.

[0025] Figure 2 Schematic diagram showing a simplified structure of a fluid delivery device according to an example of the present disclosure.

[0026] Figure 3 is a first perspective stereoscopic view showing a fluid delivery device according to an example of the present disclosure.

[0027] Figure 4 2 is a perspective view showing a fluid delivery device according to an example of the present disclosure.

[0028] Figure 5A Schematic diagram showing a first structure of a fluid transporting portion according to an example of the present disclosure.

[0029] Figure 5B Schematic diagram showing a second structure of a fluid transporting portion according to an example of the present disclosure.

[0030] Figure 5C Schematic diagram showing a third structure of a fluid transporting portion according to an example of the present disclosure.

[0031] Figure 5D Schematic diagram showing a fourth structure of a fluid transporting portion according to an example of the present disclosure.

[0032] Fig. 6A Schematic diagram showing a first structure of a fluid storage unit according to an example of the present disclosure.

[0033] Figure 6B 2 is a schematic diagram showing a second structure of a fluid storage unit according to an example of the present disclosure.

[0034] Fig. 7A 1 is a schematic diagram showing a first example of assembling a fluid storage unit according to an example of the present disclosure in a fluid delivery device.

[0035] Figure 7B 1 is a schematic diagram showing a second example of assembling the fluid storage unit according to the example of the present disclosure in the fluid delivery device.

[0036] Figure 8 It is a schematic diagram showing an application scenario of the fluid delivery system involved in the example of the present disclosure.

[0037] Fig. 9A It is a schematic diagram showing data communication among various components in the fluid delivery system involved in the first example of the present disclosure.

[0038] Fig. 9B Schematic diagram showing data communication among various components in a fluid delivery system according to a second example of the present disclosure.

[0039] Fig.10 Schematic diagram showing the cross-sectional structure of the application device involved in the example of the present disclosure and its assembly with the fluid delivery device. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments filled in by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0041] It should be noted that the terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. In the following description, the same symbols are given to the same components, and repeated descriptions are omitted. In addition, the drawings are only schematic diagrams, and the ratios of the sizes of the components to each other or the shapes of the components may be different from the actual ones.

[0042] The present disclosure provides a fluid delivery device and a fluid delivery system, which can provide a safer quantitative fluid infusion for a target. In some examples, the fluid delivery device of the present disclosure may also be referred to as a "drug delivery device", "drug pump", "fluid delivery pump", "fluid infusion device" or "fluid infusion device", etc., and the fluid delivery system may also be referred to as a "drug delivery system", "drug pump system", "fluid delivery pump", "fluid infusion system" or "infusion system", etc.

[0043] Figure 1 It is a schematic diagram showing an application scenario of the fluid delivery device 1 involved in the example of the present disclosure. Figure 2 is a schematic diagram showing a simplified structure of a fluid delivery device 1 according to an example of the present disclosure.

[0044] like Figure 1 As shown, the first aspect of the present disclosure provides a fluid delivery device 1, which can be used for fluid delivery in a target 2, such as drug delivery, etc. In some examples, the fluid delivery device 1 can be fixed to the target 2, and preferably, the fluid delivery device 1 can be applied to the target 2. In this case, it is convenient for the target 2 to use the fluid delivery device 1 for fluid delivery, which has the characteristics of timeliness and portability.

[0045] like Figure 2 As shown, the fluid delivery device 1 may include a fluid storage portion 11 , a fluid delivery portion 12 , and a fluid guiding portion 13 .

[0046] In other examples, the fluid delivery device 1 may include a housing 15 , a base 14 , a fluid storage portion 11 , a fluid delivery portion 12 , and a fluid guiding portion 13 .

[0047] In some examples, base 14 may be configured to be applied to target 2 .

[0048] In some examples, the housing 15 may be combined with the base 14 to form a chamber for accommodating the fluid storage part 11 , the fluid delivery part 12 , and the fluid guiding part 13 , thereby protecting the fluid storage part 11 , the fluid delivery part 12 , and the fluid guiding part 13 .

[0049] In some examples, the fluid storage part 11 can be used to store fluid. Specifically, the fluid storage part 11 can be disposed on the base 14 and used to store fluid.

[0050] In some examples, the fluid delivery unit 12 can obtain fluid from the fluid storage unit 11. Specifically, the fluid delivery unit 12 can be disposed on the base 14 and obtain fluid from the fluid storage unit 11. In some examples, the fluid delivery unit 12 obtaining fluid from the fluid storage unit 11 can refer to pumping fluid from the fluid storage unit 11, such as pumping. In some examples, pumping can refer to driving the fluid from the fluid storage unit 11 to a specific chamber and then discharging it to a predetermined position by actuating the chamber, such as driving the fluid from the fluid storage unit 12 to the fluid delivery unit 12 and then discharging it when the fluid delivery unit 12 is actuated. In some examples, the volume of fluid pumped from the fluid storage unit 11 by the fluid delivery unit 12 each time can be fixed, that is, a predetermined volume of fluid can be pumped each time.

[0051] In some examples, the fluid delivery section 12 may enable a predetermined volume of fluid to be obtained from the fluid storage section 11, specifically, the fluid delivery section 12 may enable a predetermined volume of fluid to be obtained from the fluid storage section 11 in a volume switching manner. In some examples, the fluid delivery section 12 may enable a predetermined volume of fluid to be provided from the fluid guiding section 13 to the target 2, specifically, the fluid delivery section 12 may enable a predetermined volume of fluid to be provided from the fluid guiding section 13 to the target 2 in a volume switching manner. In some examples, the fluid delivery section 12 may enable a predetermined volume of fluid to be obtained from the fluid storage section 11 and may enable a predetermined volume of fluid to be provided from the fluid guiding section 13 to the target 2, specifically, the fluid delivery section 12 may enable a predetermined volume of fluid to be obtained from the fluid storage section 11 in a volume switching manner and the fluid delivery section 12 may enable a predetermined volume of fluid to be provided from the fluid guiding section 13 to the target 2 in a volume switching manner.

[0052] In some examples, the fluid guide 13 can guide the fluid from the fluid delivery part 12 to the target 2. In some examples, the fluid guide 13 can be a fluid path in the fluid delivery device 1 for guiding the flow of the fluid, or a structure forming the fluid path, such as a pipe and a structure having a chamber.

[0053] In some examples, the fluid guide portion 13 may communicate with the fluid storage portion 11 and the fluid delivery portion 12, and may be partially disposed in the target 2. In some examples, the fluid guide portion 13 may penetrate the base portion 14 and may be partially disposed in the target 2.

[0054] In the fluid delivery device 1 involved in the first aspect of the present disclosure, the fluid is stored in the fluid storage part 11, and the fluid delivery part 12 obtains a predetermined volume of fluid from the fluid storage part 11 via the fluid guide part 13, and the predetermined volume of fluid is continuously guided and delivered to the target 2 via the fluid guide part 13. In this case, sufficient fluid can be carried by the fluid storage part 11 and the fluid delivery part 12 can provide a safer quantitative fluid infusion for the target 2.

[0055] For the convenience of description, the specific structures of the base 14 , the fluid storage part 11 , the fluid delivery part 12 , and the fluid guide part 13 in the fluid delivery device 1 are described separately below.

[0056] Figure 3 1 is a perspective view showing a fluid delivery device 1 according to an example of the present disclosure from a first perspective. Figure 4 2 is a perspective view showing the fluid delivery device 1 according to the example of the present disclosure from a second perspective.

[0057] In some examples, such as Figure 3 and Figure 4 As shown, the base 14 may include a first face 141 and a second face 142. In some examples, the first face 141 may be close to the target 2, that is, when the base 14 is applied to the target 2, the first face 141 may be the face of the base 14 close to the target 2. In some examples, the second face 142 may be away from the target 2, that is, when the base 14 is applied to the target 2, the second face 142 may be the face of the base 14 away from the target 2. In some examples, the second face 142 may be used to carry and fix the fluid storage part 11 and the fluid delivery part 12.

[0058] In some examples, the first surface 141 may have flexibility to adapt to the surface of the target 2. In some examples, the first surface 141 may have a curvature to adapt to the surface of the target 2. In some examples, the first surface 141 may have both flexibility and curvature to adapt to the surface of the target 2. In this case, when the fluid delivery device 1 carries a large amount of fluid and causes the fluid delivery device 1 to be large in size, it can still adapt to the surface of the target 2 so as to be fixed on the target 2, that is, when fixed to the target 2, the inconvenience of carrying the target 2 due to the volume problem can be reduced by increasing the surface fit.

[0059] In some examples, the first surface 141 may have a sticky material layer, and the first surface 141 may adhere to the surface of the target 2 through the sticky material layer when the first surface 141 is close to the target 2. In this case, the fluid delivery device 1 can be easily fixed to the surface of the target 2 by adhesion and the length of the delivery path can be reduced, thereby making it convenient to carry the fluid delivery device 1.

[0060] In some examples, as described above, the fluid delivery device 1 may further include a housing 15. In some examples, the housing 15 may cooperate with the second surface 142 to form a chamber that accommodates the fluid storage portion 11, the fluid delivery portion 12, and the fluid guiding portion 13. In this case, the fluid storage portion 11, the fluid delivery portion 12, and the fluid guiding portion 13 may be protected by the housing 15.

[0061] In some examples, such as Figure 3 As shown, the area of ​​the base 14 can be larger than the area of ​​the second surface 142 and the housing 15. In this case, the large-area base 14 can better adhere to the surface of the target 2, thereby enabling the housing 15 to cover the fluid storage part 11, the fluid delivery part 12 and the fluid guide part 13 more stably.

[0062] In some examples, such as Figure 3 As shown, the housing 15 may have a through hole 151. In some examples, the through hole 151 may be provided close to the fluid storage unit 11. In this case, through the through hole 151, it is convenient to observe the use of the fluid in the fluid storage unit 11, or it is convenient to perform a fluid replenishment operation on the fluid storage unit 11.

[0063] In some examples, the number of through holes 151 can be multiple. In some examples, the shape, size and position of the through holes 151 can be different according to different functions, and the shape is not limited. For example, the through hole 151 used to observe the fluid storage part 11 can be set at the upper part of the corresponding fluid storage part 11 and be circular (see Figure 3 ), the through hole 151 for performing a fluid replenishment operation on the fluid storage part 11 can be arranged on the side of the corresponding fluid storage part 11 and has an elliptical shape (see Figure 4 ).

[0064] Figure 5A 1 is a schematic diagram showing a first structure of the fluid transporting portion 12 according to an example of the present disclosure. Figure 5B is a schematic diagram showing a second structure of the fluid transporting portion 12 involved in the example of the present disclosure. Figure 5C is a schematic diagram showing a third structure of the fluid transporting portion 12 involved in the example of the present disclosure. Figure 5D Schematic diagram showing a fourth structure of the fluid transporting portion 12 according to the example of the present disclosure.

[0065] As described above, the fluid delivery device 1 according to the present disclosure may include a fluid delivery portion 12 .

[0066] For some examples, see Figure 2 As shown, the fluid delivery portion 12 may include a pump body 122 and an actuating unit 121 .

[0067] In some examples, such as Figure 5A As shown, the actuating unit 121 may include a pusher 211 and a restorer 212 .

[0068] In some examples, the pump body 122 can receive or provide a predetermined volume of fluid by changing its volume. "Receiving a predetermined volume of fluid" may refer to receiving, accepting, obtaining or acquiring a predetermined volume of fluid, and the methods may include but are not limited to inflow, squeezing, sucking or pumping, etc.; "providing a predetermined volume of fluid" may refer to providing or discharging a predetermined volume of fluid from the pump body 122, and the methods may include but are not limited to outflow, squeezing, sucking out or pumping out, etc.

[0069] In some examples, such as Figure 5A As shown, the button 16 or the knob 17 can be connected to the pusher 211 and can directly actuate the pusher 211 by pressing the button 16 or rotating the knob 17 to drive the pump body 122 to switch the volume, that is, the button 16 or the knob 17 can be linked with the pusher 211.

[0070] In some examples, the pusher 211 can be connected to the button 16 and drive the pump body 122 to switch from the first volume to the second volume when the button 16 is pressed down for a predetermined stroke. In some examples, the resetter 212 can be connected to the pusher 211 and charged to drive the pusher 211 to return to the initial position when the pusher 211 drives the pump body 122 to switch from the first volume to the second volume. In this case, the pump body 122 can be switched between the first volume and the second volume by the pusher 211 and the resetter 212 cooperating to actuate the pump body 122, thereby obtaining a predetermined volume of fluid from the fluid storage unit 11 or providing a predetermined volume of fluid from the fluid delivery unit 12 to the target 2 via the fluid guide unit 13; in addition, pressing the button 16 down for a predetermined stroke can serve as a control signal to trigger the volume switching between the first volume and the second volume.

[0071] In other examples, the pusher 211 may be connected to the knob 17 and drive the pump body 122 to switch from the first volume to the second volume when the knob 17 is rotated by a predetermined angle. In some examples, the resetter 212 may be connected to the pusher 211 and charged to drive the pusher 211 to return to the initial position when the pusher 211 drives the pump body 122 to switch from the first volume to the second volume. In this case, the pump body 122 can be switched between the first volume and the second volume by the pusher 211 and the resetter 212 cooperating to actuate the pump body 122, thereby obtaining a predetermined volume of fluid from the fluid storage unit 11 or providing a predetermined volume of fluid from the fluid delivery unit 12 to the target 2 via the fluid guide unit 13; in addition, the predetermined angle of the knob 17 can be used as a control signal to trigger the volume switching between the first volume and the second volume.

[0072] In some examples, the initial position may refer to a position where the pusher 211 has not yet driven the pump body 122 to switch from the first volume to the second volume.

[0073] In other examples, the actuating unit 121 of the fluid delivery portion 12 may be a driver or an actuator, which is referred to herein as the first actuator 213 for ease of description. Figure 5B As shown, the first actuator 213 can drive the pump body 122 to switch from the first volume to the second volume.

[0074] In the present disclosure, by actuating the pump body 122 through the first actuator 213, the pump body 122 can automatically switch its volume between the first volume and the second volume, thereby automatically obtaining a predetermined volume of fluid from the fluid storage part 11 or automatically providing a predetermined volume of fluid from the fluid delivery part 12 via the fluid guide part 13 to the target 2, that is, it is possible to improve automation and intelligence.

[0075] In some examples, the first actuator 213 may be at least one of a piezoelectric motor, a micro servo motor, or a memory metal drive device. In this case, the actuator is a shape memory alloy, which can facilitate the use of conductive heating shape memory alloy to obtain a reciprocating and precise and stable power source to improve the convenience of actuating the pump body 122, the actuator is a piezoelectric motor, which can use the nanometer-level control accuracy of the piezoelectric motor to improve the accuracy of actuating the pump body 122, and the actuator is a micro servo motor, which can use the stable torque and high-precision performance of the servo motor to improve the stability and accuracy of actuating the pump body 122.

[0076] In some examples, such as Figure 5B As shown, the first actuator 213 may be configured to perform corresponding actions under the control of the active module 18 (described later), such as driving the pump body 122 to maintain the first volume or driving the pump body 122 to maintain the second volume.

[0077] In other examples, such as Figure 5C As shown, the first actuator 213 can cooperate with the pusher 211 and the resetter 212 and perform corresponding actions under the control of the active module 18, that is, the actuating unit 121 can include the pusher 211, the resetter 212 and the first actuator 213. Specifically, for example, the active module 18 can control the first actuator 213 to drive the propeller to drive the pump body 122 to maintain the first volume or drive the pump body 122 to maintain the second volume, and the pump body 122 and the pusher 211 can be automatically reset under the action of the resetter 212. In this case, the first actuator 213 can be started only once to complete the switching of the volume of the pump body 122, thereby saving power consumption.

[0078] In other examples, such as Figure 5D As shown, the button 16 or the knob 17 can also serve as a starter of the first actuator 213 , that is, the first actuator 213 is started to work by pressing the button 16 or rotating the knob 17 .

[0079] In some examples, when the button 16 is operated to press down a predetermined stroke, the knob 17 is operated to rotate a preset angle, or the first actuator 213 is configured to start, that is, when the actuation unit 121 acts, the pump body 122 can be operated to maintain the first volume and receive a predetermined volume of fluid through the fluid guide 13. In some examples, when the button 16 is operated to recover from pressing down a predetermined stroke (for example, being released), the knob 17 is operated to recover from rotating a preset angle (for example, being rotated to the original state), or the first actuator 213 is configured to stop starting, that is, when the actuation unit 121 reacts, the pump body 122 can be operated to maintain the second volume and provide a predetermined volume of fluid through the fluid guide 13. In this case, by driving the pump body 122 to switch between the first volume and the second volume to receive or provide a predetermined volume of fluid, quantitative control can be performed, and safety constraints can be provided to improve the accuracy of fluid delivery.

[0080] In some examples, the second volume may be smaller than the first volume, and the predetermined volume is determined by the volume difference between the first volume and the second volume, for example, the predetermined volume may be the volume difference between the first volume and the second volume. In this case, when the second volume is smaller than the first volume, the flow supplier switches from the first volume to the second volume to facilitate the formation of positive pressure to provide fluid, and the pump body 122 switches from the second volume to the first volume to facilitate the formation of negative pressure to receive fluid, and the predetermined volume of the fluid can be determined when receiving or providing the fluid by the volume difference between the first volume and the second volume, thereby completing quantitative fluid delivery, that is, the flow limiting structure can quantitatively control the fluid delivery.

[0081] In some examples, the predetermined volume of fluid may also be referred to as a unit amount, a basic amount, or a digital amount of fluid. The predetermined volume of fluid may be determined by changing the first volume or the second volume of the pump body 122 according to different fluid types and therapeutic effects. For example, according to the needs of diabetic patients to obtain specific therapeutic effects, the amount of insulin obtained each time may be set to 0.1 mg (or ml), 0.5 mg (or ml), 1 mg (or ml), etc.

[0082] In some examples, such as FIG. 5A to FIG. 5D As shown, the pump body 122 may include a pump chamber 221 and a plurality of check valves that allow fluid to flow into or out of the pump chamber 221 in a single direction (eg, from the fluid storage unit 11 to the pump body 122 , or from the pump body 122 to the target 2 ).

[0083] In some examples, the pump chamber 221 can switch between a first volume and a second volume. In some examples, the pump chamber 221 can have an inlet connected to the fluid storage portion 11 through the fluid guide portion 13 and an outlet connected to the target 2 through the fluid guide portion 13. In some examples, a check valve can be provided at the inlet of the pump chamber 221 so that the fluid flows into the pump chamber 221 from the inlet of the pump chamber 221. For the sake of distinction, the check valve provided at the inlet can be referred to as the first check valve 223. In some examples, a check valve can be provided at the outlet of the pump chamber 221 so that the fluid flows out of the pump chamber 221 from the outlet of the pump chamber 221. For the sake of distinction, the check valve provided at the outlet can be referred to as the second check valve 222.

[0084] In some examples, the inlet or outlet of the pump chamber 221 may be an opening formed in the pump chamber 221, or may be a channel opening formed in the pump chamber 221 and protruding from the pump body 122. In the present disclosure, preferably, the inlet or outlet of the pump chamber 221 is a channel opening formed in the pump chamber 221 and protruding from the pump body 122. In this case, it is convenient to connect and communicate with the fluid guide portion 13, for example, and it is also convenient to set a check valve at the inlet or outlet without setting the check valve in the fluid guide portion 13, thereby reducing the influence of the fluid guide portion 13 on the control accuracy of the check valve.

[0085] In some examples, the first check valve 223 may be a lift check valve, a swing check valve, or a butterfly check valve. In some examples, the second check valve 222 may also be a lift check valve, a swing check valve, or a butterfly check valve. In this case, when the fluid flows from the fluid storage unit 11 to the pump body 122 and then to the target 2, a one-way flow can be formed through the first check valve 223 and the second check valve 222, thereby reducing the problem of inaccurate quantitative infusion of fluid caused by fluid reflux or bubble hysteresis.

[0086] In some examples, when the volume of the pump body 122 changes, a predetermined volume of fluid can be received from the fluid storage part 11 through the fluid guide part 13 or a predetermined volume of fluid can be provided to the target 2 through the fluid guide part 13. Specifically, when the second check valve 222 is closed, the pump body 122 can maintain a first volume and receive a predetermined volume of fluid from the fluid storage part 11 through the fluid guide part 13 (at this time, the first check valve 223 of the inlet is open), and when the first check valve 223 is closed, the pump body 122 can maintain a second volume and provide a predetermined volume of fluid to the target 2 through the fluid guide part 13 (at this time, the second check valve 222 of the outlet is open). In this case, the fluid can be quantitatively measured by the pump body 122, thereby achieving quantitative fluid delivery.

[0087] It is worth noting that, without considering the pump body 122, such as whether the fluid storage unit 11 has a predetermined pressure, the opening and closing of the first check valve 223 and the second check valve 222 can be controlled by the pressure of the pump chamber 221 of the pump body 122. For example, when the pump chamber 221 maintains a first volume, the pump chamber 221 can have a first pressure (such as a negative pressure). At this time, the first check valve 223 can move into the pump chamber 221 and allow the fluid to enter the pump chamber 221, that is, the first check valve 223 is controlled to be opened, and the second check valve 223 is controlled to be opened. 22 can move into the pump chamber 221 and can prevent the fluid from flowing out of the pump chamber 221, that is, the second check valve 222 is controlled to be closed; when the pump chamber 221 maintains the second volume, the pump chamber 221 can have a second pressure (for example, positive pressure), at this time the first check valve 223 can move out of the pump chamber 221 and can prevent the fluid from entering the pump chamber 221, that is, the first check valve 223 is controlled to be closed, and at the same time the second check valve 222 can move out of the pump chamber 221 and can prevent the fluid from flowing out of the pump chamber 221, that is, the second check valve 222 is controlled to be open.

[0088] In some examples, the first pressure when the pump chamber 221 maintains the first volume may be less than the predetermined pressure of the fluid storage unit 11. In this case, when the pump chamber 221 is at the first volume, under the effect of the first pressure less than the predetermined pressure of the fluid storage unit 11, the first check valve 223 is opened, the second check valve 222 is closed, and the fluid can enter the pump chamber 221 through the inlet.

[0089] In some examples, the second pressure when the pump chamber 221 maintains the second volume may be greater than the predetermined pressure of the fluid storage unit 11. In this case, when the pump chamber 221 is at the second volume, under the effect of the second pressure greater than the predetermined pressure of the fluid storage unit 11, the first check valve 223 is closed and the second check valve 222 is opened, thereby completing the process of quantitatively infusing the fluid.

[0090] As described above, the fluid transport device 1 of the present disclosure may include a fluid guide portion 13 .

[0091] For some examples, see Figure 2 or Figure 4 The fluid guiding portion 13 may include a first fluid guiding portion 131 and a second fluid guiding portion 132 .

[0092] In some examples, the first fluid guide portion 131 may be a portion of the fluid guide portion 13 connecting the fluid storage portion 11 and the fluid delivery portion 12. Specifically, the first fluid guide portion 131 may be a channel of the fluid guide portion 13 connecting the fluid reservoir 114 (or the fluid storage tank 111) and the pump chamber 221 of the fluid delivery portion 12.

[0093] In some examples, second fluid guide portion 132 may be a portion of fluid guide portion 13 connecting fluid delivery portion 12 and target 2 . Specifically, second fluid guide portion 132 may be a channel of fluid guide portion 13 connecting pump chamber 221 of fluid delivery portion 12 and target 2 .

[0094] In some examples, the second fluid guide 132 may include at least one of the aforementioned hollow needle or hose.

[0095] In some examples, the second fluid guide 132 may include a hollow needle. In some examples, the hollow needle may be at least partially disposed in the target 2, that is, the hollow needle may contact the target 2 and enter the target 2, for example, when the target 2 is a human body, the hollow needle may enter the subcutaneous part of the human body.

[0096] In some examples, the predetermined volume of fluid provided by the fluid delivery part 12 can be delivered to the target 2 through a hollow needle. In this case, delivering the fluid to the target 2 through a hollow needle can reduce the trauma caused to the target 2 during the fluid delivery process.

[0097] In other examples, the second fluid guide 132 may include a hose. In some examples, the hose may be at least partially disposed in the target 2, that is, the hose may contact the target 2 and enter the target 2, for example, when the target 2 is a human body, the hose may enter the subcutaneous tissue or even the subcutaneous blood vessels of the human body.

[0098] In some examples, the predetermined volume of fluid provided by the fluid delivery unit 12 can be delivered to the target 2 through the hose. In this case, delivering the fluid to the target 2 through the hose can increase the rate of fluid delivery, thereby improving, for example, the therapeutic effect of delivering drugs for diseases.

[0099] In some examples, the diameters of various parts of the fluid guide 13 may be the same, for example, the diameters of the fluid guides 13 may all be less than 0.7 mm (also commonly referred to as microtube diameters or capillary diameters). In this case, the fluid guides 13 with the same diameter less than 0.7 mm can maintain the same pressure drop when conveying the fluid, making the conveying process stable and accurate.

[0100] In other examples, the diameters of various parts of the fluid guide portion 13 may be different. For example, since the second fluid guide portion 132 needs to partially enter the subcutaneous tissue of the human body (such as a hollow needle and a hose), its diameter may be slightly smaller than the diameter of the portion that does not need to enter the subcutaneous tissue. For example, the diameter of the portion of the fluid guide portion 13 that enters the subcutaneous tissue may be less than 0.5 mm to facilitate the complete discharge of the fluid from the fluid guide portion 13 to reduce the formation of negative pressure, thereby reducing the problem of inaccurate delivery caused by bubble formation, or reducing the backflow of liquid (such as blood in the subcutaneous tissue or the fluid itself) causing the fluid in the device to be undesirably contaminated.

[0101] Fig. 6A 1 is a schematic diagram showing a first structure of the fluid storage unit 11 according to the example of the present disclosure. Figure 6B 1 is a schematic diagram showing a second structure of the fluid storage unit 11 according to the example of the present disclosure.

[0102] As described above, the fluid delivery device 1 of the present disclosure may include a fluid storage part 11 .

[0103] In some examples, such as Fig. 6A or Figure 6B As shown, the fluid storage portion 11 may include a fluid storage tank 111 and a second actuator 112 .

[0104] In some examples, the liquid storage tank 111 can be used to store fluids. For example, the liquid storage tank 111 can store a large amount of liquid medicine such as insulin, so as to deliver insulin to the diabetic patient in a timely manner when a glucose warning event occurs in the diabetic patient.

[0105] In some examples, the volume of the liquid storage tank 111 can be designed according to the type of fluid, the amount of fluid delivered at a single time, the duration of fluid delivery, etc. In some examples, the liquid storage tank 111 can also have a supplementary inlet for replenishing the fluid. In this case, it is convenient to replenish the fluid to the liquid storage tank 111 through the supplementary inlet.

[0106] In some examples, the liquid storage tank 111 may have a predetermined pressure, and the manner of providing the predetermined pressure may include using an elastic material as the inner cavity of the liquid storage tank 111 or using an actuator to actuate the liquid storage tank 111. For example, the preferred manner of the present disclosure is to drive the liquid storage tank 111 by the second actuator 112. In this case, the liquid storage tank 111 having a predetermined pressure can better deliver the fluid therein to a container such as the fluid delivery unit 12, and the accuracy of the fluid delivery unit 12 receiving the predetermined volume of fluid will not be affected by the presence of negative pressure or bubbles caused by emptying the fluid.

[0107] In some examples, the liquid storage tank 111 having a predetermined pressure may mean that the pressure of the fluid in the liquid storage tank 111 may be maintained within a predetermined range when the liquid storage tank 111 contains the fluid.

[0108] In some examples, such as Fig. 6A or Figure 6B As shown, one side of the liquid storage tank 111 may be open and sealed by the piston 115 to form a receiving space. In some examples, the liquid storage tank 111 may have an outlet connected to the fluid guide portion 13. In this case, when the liquid storage tank 111 contains fluid, the fluid can be pushed out of the fluid guide portion 13 by the piston 115.

[0109] In some examples, as described above, the second actuator 112 can actuate the liquid storage tank 111 to maintain a predetermined pressure. In this case, the second actuator 112 maintains the liquid storage tank 111 at a predetermined pressure, which can facilitate the fluid in the liquid storage tank 111 to smoothly enter the fluid delivery unit 12, thereby improving the accuracy and stability of fluid delivery.

[0110] In some examples, such as Fig. 6A As shown, the piston 115 can be driven by the second actuator 112 to maintain the predetermined pressure in the liquid storage tank 111, that is, the fluid in the liquid storage tank 111 is kept at the predetermined pressure. In this case, it is convenient to discharge the fluid from the liquid storage tank 111 to the fluid delivery unit 12, and it is possible to reduce the backflow of the fluid or the formation of negative pressure, bubbles, etc. In addition, by controlling the second actuator 112 to drive the piston 115 in a linear stroke, it is also possible to improve the accuracy of maintaining the predetermined pressure of the fluid in the liquid storage tank 111, thereby facilitating the subsequent fluid delivery with the fluid delivery unit 12.

[0111] In some examples, the second actuator 112 may be at least one of a piezoelectric motor, a micro servo motor, or a memory metal drive device. In this case, the actuator is a shape memory alloy, which can facilitate the use of conductive heating shape memory alloy to obtain a reciprocating, precise and stable power source to improve the convenience of actuating the liquid storage tank 111, the actuator is a piezoelectric motor, which can use the nanometer-level control accuracy of the piezoelectric motor to improve the accuracy of actuating the liquid storage tank 111, and the actuator is a micro servo motor, which can use the stable torque and high-precision performance of the servo motor to improve the stability and accuracy of actuating the liquid storage tank 111.

[0112] In other examples, such as Figure 6B As shown, the piston 115 may also be connected to an elastic component 116, and the elastic component 116 may be kept in a compressed state. In this case, the elastic component 116 kept in a compressed state can drive the piston 115 to move so that the fluid contained in the liquid storage tank 111 maintains a predetermined pressure, which can reduce the situation of fluid backflow or blood backflow contaminating the fluid in the liquid storage tank 111.

[0113] In other examples, the liquid storage tank 111 may also be a retractable container made of elastic material, which can maintain the pressure within a preset range when containing the fluid, such as silicone, rubber, etc. In this case, the effect of making the liquid storage tank 111 have pressure can be achieved by not providing the piston 115 or the second actuator 112.

[0114] Fig. 7A 1 is a schematic diagram showing a first example of assembling the fluid storage unit 11 according to the example of the present disclosure in the fluid delivery device 1 .

[0115] In some examples, such as Fig. 7A As shown, the liquid storage tank 111 may have a sealable liquid replenishment port 112. In this case, the liquid storage tank 111 can be regularly replenished with fluid through the liquid replenishment port 112; in addition, the sealable liquid replenishment port 112 can maintain the pressure inside the liquid storage tank 111 or reduce the situation where air enters or is contaminated by the external environment when the liquid storage tank 111 is replenished with fluid. In some examples, the position of the liquid replenishment port 112 in the liquid storage tank 111 may not be limited. In some examples, the liquid replenishment port 112 can cooperate with an external catheter to replenish the fluid in the liquid storage tank 111.

[0116] In some examples, the inlet 112 of the liquid storage tank 111 may match the through hole 151, for example, the inlet 112 may be located at a position corresponding to the through hole 151. In this case, the fluid storage part 11 can be infused with fluid through the through hole 151 and the inlet 112.

[0117] In some examples, when the fluid storage unit 11 is replenished with liquid through the liquid replenishment port 112, the liquid storage tank 111 can maintain a predetermined pressure under the action of the second actuator 112. In this case, the air entering the liquid storage tank 111 to form bubbles can be reduced.

[0118] Figure 7B 1 is a schematic diagram showing a second example of assembling the fluid storage unit 11 according to an example of the present disclosure into the fluid delivery device 1 .

[0119] In some examples, such as Figure 7B As shown, the fluid storage portion 11 may include a reservoir mounting portion 113 and a reservoir 114 .

[0120] In some examples, the reservoir mounting portion 113 may be disposed on the second surface portion 142 of the base 14. In some examples, the reservoir mounting portion 113 may be located in the housing 15 and communicate with the through hole 151.

[0121] In some examples, such as Figure 7B As shown, the liquid reservoir 114 can be detachably disposed on the liquid reservoir mounting portion 113 through the through hole 151, that is, the liquid reservoir 114 can be an independent device disposed outside the housing 15. In this case, when the target 2 needs to transport a large amount of fluid, the fluid can be stored in advance in a plurality of liquid reservoirs 114 detachably disposed on the liquid reservoir mounting portion 113, thereby facilitating the target 2 to carry a large amount of fluid and transport the fluid.

[0122] In some examples, the reservoir 114 provided in the reservoir mounting portion 113 may be a liquid storage device pre-filled with a quantitative fluid, for example, the reservoir 114 provided in the reservoir mounting portion 113 may be an insulin pen pre-filled with a quantitative insulin. In this case, it is convenient for the target 2 to carry a large amount of fluid and perform fluid delivery.

[0123] For some examples, see above Figure 2 As shown, the fluid delivery device 1 may further include an active module 18, and the active module 18 may transmit the usage information of the fluid in the fluid storage part 11 to the external control terminal 3 by wireless communication. In this case, the fluid delivery device 1 and the control terminal 3 may form a fluid delivery system 100, thereby enabling closed-loop control of the fluid delivery process through the fluid delivery system 100 to improve the accuracy of fluid delivery.

[0124] In some examples, the active module 18 can be electrically connected to the first actuator 213 and the second actuator 112 and control the first actuator 213 and the second actuator 213 to respectively actuate the fluid storage unit 11 and the pump body 122 according to preset instructions. In this case, it is convenient to control the fluid infusion process in a targeted manner according to the infusion requirements.

[0125] In some examples, the active module 18 may be an integrated circuit or component with a control chip. In some examples, the active module 18 may include a power supply, a control chip, a voltage conversion circuit, etc. In this case, the active module 18 can directly drive the first actuator 213 and the second actuator 112 to start according to a preset instruction by controlling the voltage and current.

[0126] Figure 8 Schematic diagram showing an application scenario of the fluid delivery system 100 involved in the example of the present disclosure. Fig. 9A Schematic diagram showing data communication among various components in the fluid delivery system 100 according to the first example of the present disclosure. Fig. 9B Schematic diagram showing data communication among various components in a fluid delivery system 100 according to a second example of the present disclosure.

[0127] A second aspect of the present disclosure provides a fluid delivery system 100, such as Figure 8 As shown, the fluid delivery system 100 may include an analyte sensor 4 , a control terminal 3 , and a fluid delivery device 1 .

[0128] In some examples, analyte sensor 4 may be used to obtain analyte concentration data in target 2 .

[0129] In some examples, control terminal 3 may be used to receive and analyze analyte concentration data.

[0130] In some examples, the fluid delivery device 1 may be any fluid delivery device 1 involved in the first aspect of the present disclosure.

[0131] In some examples, the analyte sensor 4, the control terminal 3, and the fluid delivery device 1 may be communicatively connected to each other via wireless communication.

[0132] In some examples, the control terminal 3 may also be configured to receive the usage information of the fluid of the fluid delivery device 1, and may provide the target 2 with safety constraints for fluid delivery based on the analyte concentration data and the usage information of the fluid. In this case, the fluid delivery system 100 may be used to perform closed-loop control on the fluid delivery, thereby improving the accuracy and safety of the fluid delivery.

[0133] In some examples, the safety constraint may refer to a rule, procedure, or process that enables the fluid delivery device 1 to be safely enabled.

[0134] In some examples, the control terminal 3 can be a dedicated controller, a mobile phone, a personal computer, or other terminal device. In some examples, the control terminal 3 can also be a cloud device or an Internet device. For example, the server of an Internet hospital can serve as the control terminal 3.

[0135] In some examples, analyte sensor 4 may be a device for monitoring physiological parameters of target 2 such as blood oxygen saturation, pulse rate, body temperature, height / weight, body composition, blood lipids, blood sugar, blood pressure, etc., without limitation.

[0136] In some examples, the analyte sensor 4 may be connected to the control terminal 3 in a wireless communication manner.

[0137] In some examples, the control terminal 3 can be connected to the fluid delivery device 1 in a wireless communication manner.

[0138] In some examples, the wireless communication method may include, but is not limited to, at least one of Bluetooth, Wifi, 3G / 4G / 5G, NFC, UWB, and Zig-Bee.

[0139] In some examples, such as Fig. 9A As shown, the analyte sensor 4 can obtain data of the physiological parameters of the target 2 and send the data to the control terminal 3, and the control terminal 3 can control the fluid delivery device 1 to deliver the fluid based on the data of the physiological parameters of the target 2. In other examples, such as Fig. 9B As shown, the control terminal 3 may not be provided, and the fluid delivery device 1 may be linked with the analyte sensor 4 through the active module 18 provided therein to perform automated fluid delivery (such as automatic drug delivery), and the active module 18 may be communicatively connected with the analyte sensor 4. In this case, the fluid delivery device 1 may directly respond to the monitoring data of the analyte sensor 4 and automatically provide infusion therapy to the target 2 in a timely manner, thereby improving the convenience and rapidity of delivering the fluid.

[0140] In some examples, if the treatment of diabetes is taken as an example, the analyte sensor 4 may be a blood glucose monitor. The data of the physiological parameter of the target 2 may be blood glucose data. The workflow of the fluid delivery device 1 may include: obtaining real-time blood glucose data from the blood glucose monitor of the target 2 (i.e., the aforementioned analyte sensor 4) and sending it to the control terminal 3; the control terminal 3 sends a control signal to the fluid delivery device 1 based on the blood glucose data; the fluid delivery device 1 may infuse the fluid into the target 2 based on the control signal.

[0141] In summary, according to the present disclosure, a fluid delivery device 1 and a fluid delivery system 100 can be provided, which can provide a safer quantitative fluid infusion for a target 2 .

[0142] Fig.10 is a schematic diagram showing the cross-sectional structure of the application device 5 involved in the example of the present disclosure and its assembly with the fluid delivery device 1. It can be understood that, Fig.10Only the simplified structure of the application device 5 and its simple assembly with the fluid delivery device 1 are illustrated, so the fluid delivery device 1 is replaced by a rectangle in the figure and should not be understood as limiting the shape of the fluid delivery device 1 .

[0143] In addition, in the above-mentioned fluid delivery device 1, since the fluid guide part 13 needs to partially enter the target 2, such as the subcutaneous part of the human body, when the user directly applies the fluid delivery device 1 to the target 2, it is easy to cause the hollow needle or hose of the fluid delivery part 13 to be implanted inaccurately. Therefore, the present disclosure also provides an application device 5 that is easy to operate and can accurately apply the fluid delivery device 1 to the target 2.

[0144] In some examples, such as Fig.10 As shown, the applying device 5 may include a housing 53 , an auxiliary mechanism 54 , a first driving mechanism 51 and a second driving mechanism 52 .

[0145] In some examples, the housing 53 may include a first retaining portion 531 , and a proximal end 533 that is close to the target 2 during operation, and a distal end 532 that is away from the target 2 .

[0146] In some examples, the auxiliary mechanism 54 may include a moving body 542 that is releasably held on the first holding portion 531 and configured to be movable relative to the shell 53 when released, a receiving portion 543 disposed on the moving body 542 and configured to receive and accommodate the fluid delivery device 1, a second holding portion 544 disposed on the moving body 542, and a puncture member 541 that is releasably held on the second holding portion 544 and configured to be movable relative to the receiving portion 543 when released.

[0147] In some examples, the shape and size of the receiving portion 543 can match the shape and size of the fluid delivery device 1. For example, the size of the receiving portion 543 can be comparable to and slightly larger than the housing 15 of the fluid delivery device 1, the shape can be the same, and the edge of the receiving portion 543 can fit with the portion of the second surface 142 of the base 14 whose area is larger than the area of ​​the housing 15. In this case, the fluid delivery device 1 can be applied to the target 2 better and more accurately.

[0148] In some examples, the first drive mechanism 51 can be configured to apply force to the moving body 542 in a manner toward the proximal end 533.

[0149] In some examples, second drive mechanism 52 can be configured to apply force to piercing member 541 in a manner toward distal end 532 .

[0150] In some examples, the housing 15 of the fluid delivery device 1 may be provided with a through hole 151 corresponding to the portion where the fluid guide portion 13 enters the target 2 .

[0151] In some examples, such as Fig.10 As shown, the puncture member 541 can cooperate with the part of the fluid guide part 13 that enters the target 2 (such as a hollow needle or a hose) to insert the hollow needle or the hose together with the puncture member 541 into the target 2 (such as subcutaneously) when the first driving mechanism 51 applies action to the moving body 542 in a manner toward the proximal end 533, and when the second driving mechanism 52 applies action to the puncture member 541 in a manner toward the distal end 532, the hollow needle or the hose remains in the inserted state and the puncture member 541 returns to the non-inserted state.

[0152] In some examples, when the moving body 542 is released, the moving body 542 is driven toward the proximal end 533 by the first driving mechanism 51 to apply the fluid delivery device 1 contained in the accommodating portion 543 to the target 2 through the puncture member 541 and at least partially place it under the skin of the target 2 (such as applying the fluid delivery device 1 to the surface of the target 2 with the adhesive material layer of the base 14, and connecting the hollow needle or the hose to the subcutaneous part of the target 2), and the puncture member 541 is driven toward the distal end 532 by the second driving mechanism 52 to make the puncture member 541 leave the target 2.

[0153] In some examples, the first driving mechanism 51 may be an elastic element, such as a spring.

[0154] In some examples, the second driving mechanism 52 may be an elastic element, such as a spring.

[0155] In the application device 5 disclosed, the shell 53 includes a proximal end 533 close to the target 2 during operation and a distal end 532 away from the target 2, a housing 543 configured to receive and accommodate the fluid delivery device 1, and a puncture member 541 movable relative to the housing 543 is arranged on the moving body 542, the moving body 542 is driven toward the proximal end 533 by the first driving mechanism 51 to apply the fluid delivery device 1 to the target 2 and at least partially place it under the skin of the target 2, and the puncture member 541 is driven toward the distal end 532 by the second driving mechanism 52 to make the puncture member 541 leave the target 2.

[0156] Thus, the two operation strokes required in the application process of the fluid delivery device 1, i.e., placing the fluid delivery device 1 under the skin of the target 2 through the puncture member 541 and moving the puncture member 541 away from the target 2, are configured to be applied by the driving mechanism, and the fluid delivery device 1 can be easily applied to the target 2. In addition, the housing 53 includes a proximal end 533 that is close to the target 2 during operation, and the proximal end 533 can help to define the application position of the fluid delivery device 1, and because the driving mechanism can provide a relatively accurate driving action, the puncture force, puncture depth, and timing of leaving the target 2 of the puncture member 541 during the application process can be more accurately controlled, thereby facilitating accurate application of the fluid delivery device 1 to the target 2.

[0157] According to the present disclosure, an application device 5 that is easy to operate and can accurately apply the fluid delivery device 1 to the target 2 can also be provided.

[0158] Although the present disclosure is specifically described above in conjunction with the accompanying drawings and examples, it is to 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 essential spirit and scope of the present disclosure, and these modifications and changes all fall within the scope of the present disclosure.

Claims

1. A fluid delivery device, characterized in that: The invention comprises a fluid storage part for storing fluid, a fluid delivery part for obtaining fluid from the fluid storage part, and a fluid guiding part for guiding the fluid from the fluid delivery part into the target, The fluid guide part communicates with the fluid storage part and the fluid delivery part, and is configured to be partially disposed in the target. The fluid delivery section is configured to enable a predetermined volume of fluid to be obtained from the fluid storage section and / or to enable a predetermined volume of fluid to be provided from the fluid guiding section to the target in a volume switching manner.

2. The fluid delivery device according to claim 1, characterized in that: The fluid delivery part includes a pump body, a pusher and a resetter. The pusher is connected to a button and drives the pump body to switch from a first volume to a second volume when the button is pressed down a predetermined stroke. The resetter is connected to the pusher and is energized to drive the pusher to return to an initial position when the pusher drives the pump body to switch from the first volume to the second volume.

3. The fluid delivery device according to claim 1, characterized in that: The fluid delivery part includes a pump body, a pusher and a resetter. The pusher is connected to the knob and drives the pump body to switch from a first volume to a second volume when the knob is rotated by a predetermined angle. The resetter is connected to the pusher and is energized to drive the pusher to return to an initial position when the pusher drives the pump body to switch from the first volume to the second volume.

4. The fluid delivery device according to claim 1, characterized in that: The fluid delivery part includes a pump body and a first actuator, wherein the first actuator drives the pump body to switch from a first volume to a second volume.

5. The fluid delivery device according to claim 1, characterized in that: It also includes a base configured to be applied to a target, the base including a first face close to the target and a second face away from the target, the second face being used to carry and fix the fluid storage part and the fluid delivery part, and the first face having flexibility and / or curvature adapted to the surface of the target.

6. The fluid delivery device according to claim 5, characterized in that: The first surface has an adhesive material layer, and when the first surface is close to the target, the first surface adheres to the surface of the target through the adhesive material layer.

7. The fluid delivery device according to claim 5, characterized in that: The invention also comprises a housing, wherein the housing cooperates with the second surface portion to form a chamber for accommodating the fluid storage portion, the fluid delivery portion and the fluid guiding portion.

8. The fluid delivery device according to claim 7, characterized in that: The area of ​​the base is larger than the area where the second surface portion cooperates with the housing.

9. The fluid delivery device according to claim 1, characterized in that: The fluid guiding part includes a hollow needle at least partially disposed in the target, and the predetermined volume of fluid provided via the fluid delivery part is delivered to the target through the hollow needle.

10. The fluid delivery device according to claim 1, characterized in that: The fluid guiding portion includes a hose at least partially disposed in the target, and the predetermined volume of fluid provided via the fluid conveying portion is conveyed to the target through the hose.

11. The fluid delivery device according to claim 7, characterized in that: The housing has a through hole, and the through hole is disposed adjacent to the fluid storage portion.

12. The fluid delivery device according to claim 11, characterized in that: The fluid storage unit includes a liquid storage tank and a second actuator for actuating the liquid storage tank to maintain a predetermined pressure, wherein the liquid storage tank has a liquid replenishing port matched with the through hole.

13. The fluid delivery device according to claim 11, characterized in that: The fluid storage portion includes a reservoir mounting portion provided on the second surface portion and a reservoir detachably provided on the reservoir mounting portion through the through hole.

14. The fluid delivery device according to claim 1, characterized in that: It also includes an active module, which transmits the usage information of the fluid in the fluid storage part to an external control terminal through wireless communication.

15. A fluid delivery system, characterized in that: It comprises an analyte sensor for acquiring analyte concentration data in a target, a control terminal for receiving and analyzing the analyte concentration data, and a fluid delivery device as described in any one of claims 1 to 14, wherein the analyte sensor, the control terminal and the fluid delivery device are communicatively connected to each other via wireless communication, and the control terminal is further configured to receive usage information of a fluid of the fluid delivery device, and provide safety constraints for fluid delivery to the target based on the analyte concentration data and the usage information of the fluid.

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