Micropump infusion system

Abstract

The utility model provides a micropump infusion system which comprises a shell, a medicine storage device, a driver, a battery, a liquid bag and a control circuit board, an installation cavity is formed in the shell, the liquid bag, the control circuit board, the battery and the driver are arranged in the space of one side of the installation cavity, and the medicine storage device is installed in the space of the other side of the installation cavity; the liquid bag is arranged above the control circuit board; the driver is communicated with the liquid bag through the liquid path switch, and the driver is used for conveying driving liquid to the medicine storage device; the battery is electrically connected with the liquid path switch, and the liquid path switch is electrically connected with the control circuit board; and the control circuit board is electrically connected with the driver. The scheme has the advantages of compact structure and high space utilization rate, so that the volume of the whole micropump conveying system can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a micropump infusion system. Background Technology

[0002] Currently, common infusion pump designs rely on a high-precision stepper motor connected to a push rod or transmission mechanism, which in turn pushes the piston of the drug reservoir to inject the drug solution. This method has the following problems:

[0003] 1. The stepper motor has a low resolution, resulting in poor injection accuracy of the micropump system; in addition, the use of high-precision motors is expensive, resulting in high costs.

[0004] 2. This solution has a complex mechanical design, increases the size of the hardware system, increases costs, and reduces the user experience.

[0005] It is evident that the current method of using a high-precision stepper motor to connect a push rod or transmission mechanism and drive the piston of the drug reservoir to achieve drug injection has significant shortcomings in practice. To address these issues, existing technologies have proposed micropump infusion solutions, such as patent application number 202410739030.8, entitled "A Medical Infusion System," which addresses the problems of air bubbles easily existing in the fluid bag of existing infusion pumps with connected fluid lines, affecting the drug delivery rate and the susceptibility of volumetric micropumps to damage. This system includes a housing containing a drug reservoir, a driving fluid reservoir, a volumetric micropump, a fluid connection component, and a controller. The fluid connection component is located between the suction end of the volumetric micropump and the discharge end of the driving fluid reservoir, and is used to control the connection between these two points. While this solution uses a volumetric micropump for hydraulic infusion, improving injection accuracy and user experience, the driving fluid reservoir and controller each occupy a considerable amount of space, resulting in low space utilization.

[0006] In summary, the technical problem that this application needs to solve is: how to improve the space utilization rate of micropump infusion systems. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model proposes a micro-pump infusion system, which boasts advantages such as compact structure and high space utilization. This system utilizes a circuit board positioned on one side of the mounting chamber, with a battery, driver, and liquid circuit switch located in the front space of the circuit board. A liquid bag is placed on the circuit board. This structural arrangement effectively improves the space utilization of the mounting chamber, thereby significantly reducing the overall volume of the micro-pump delivery system.

[0008] Specifically, this utility model proposes a micro-pump infusion system, including a shell, a drug reservoir, a driver, a battery, a liquid bag, and a control circuit board. The shell has an installation chamber inside. The liquid bag, control circuit board, battery, and driver are arranged in one side of the installation chamber, and the drug reservoir is installed in the other side of the installation chamber.

[0009] The liquid bag is positioned above the control circuit board;

[0010] The actuator is connected to the liquid bag via a liquid circuit switch, and the actuator is used to deliver driving fluid to the medicine reservoir;

[0011] The battery is electrically connected to the liquid circuit switch, and the liquid circuit switch is electrically connected to the control circuit board;

[0012] The control circuit board is electrically connected to the driver.

[0013] Preferably, the battery and the driver are located on the same side of the control circuit board, and the driver is located between the battery and the drug reservoir.

[0014] Preferably, the liquid circuit switch is located on the side of the battery opposite to the control circuit board.

[0015] Preferably, the cavity of the drug reservoir has a piston that divides the cavity into a drug storage chamber and a driving fluid storage chamber, and the actuator is used to deliver the driving fluid to the driving fluid storage chamber.

[0016] Preferably, a bottom cover is installed at the end of the driving fluid storage chamber away from the drug storage chamber, and an exhaust valve is detachably installed on the bottom cover.

[0017] Preferably, the end of the medicine storage container away from the bottom cover is provided with a medicine inlet that communicates with the medicine storage chamber.

[0018] Preferably, a needle insertion device is installed on the side wall of the medicine reservoir, and the needle insertion device is located on the side of the control circuit board opposite to the driver.

[0019] Preferably, the needle insertion device is centrally located on the side wall of the housing.

[0020] Preferably, the battery is cylindrical, and the two sides of the battery are used for wiring.

[0021] Preferably, the driver is a MEMS micropump.

[0022] Beneficial effects:

[0023] 1. In this solution, the MEMS micropump serves as the core of the actuator, and the entire device features a highly integrated design, solving the cost issue associated with motor-driven methods. This solution ensures the delivery accuracy of the micropump delivery system while maintaining low material costs and a simple assembly process.

[0024] 2. In this solution, the liquid bag and the control circuit board are stacked one on top of the other, and the liquid path and circuit are respectively led out from both sides of the cylindrical battery. This effectively improves space utilization, solves the problem of overall system size and weight, optimizes the size of the micro-pump infusion system, and enhances the user experience. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0026] Figure 1 This is a schematic diagram of the internal structure of the micropump infusion system proposed in this embodiment from a top-down view.

[0027] Figure 2 This is a circuit connection diagram of the micropump infusion system proposed in this embodiment;

[0028] Figure 3 This is a schematic diagram of the fluid circuit connection of the micropump infusion system proposed in this embodiment;

[0029] The reference numerals used in the attached figures are as follows:

[0030] 11-Outer shell; 12-Drug reservoir; 13-Driver; 14-Battery; 15-Liquid bag; 16-Control circuit board; 17-Piston; 18-Drug reservoir; 19-Drive fluid storage chamber; 20-Bottom cover; 21-Exhaust valve; 22-Drug inlet; 23-Needle insertion device; 24-Needle outlet; 25-Liquid circuit switch. Detailed Implementation

[0031] The technical solution of this application will be clearly and completely described below with reference to specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0032] To facilitate a clear and complete description of the technical solution, directional technical terms such as front, back, left, right, up, and down appearing below are consistent with the definitions of standard view directions. These directional definitions are for the convenience of describing this application only and do not indicate or imply that the device or element referred to must have a specific orientation or that the element is located in a specific orientation; therefore, they should not be construed as limitations on this application.

[0033] like Figures 1 to 3 As shown, this embodiment proposes a micropump infusion system, including a housing 11, a drug reservoir 12, a driver 13, a battery 14, a liquid bag 15, and a control circuit board 16. The housing 11 has an installation chamber inside. The liquid bag 15, the control circuit board 16, the battery 14, and the driver 13 are arranged in one side of the installation chamber, and the drug reservoir 12 is installed in the other side of the installation chamber.

[0034] The liquid bag 15 is arranged above the control circuit board 16;

[0035] The driver 13 is connected to the liquid bag 15 via the liquid circuit switch 25, and the driver 13 is used to deliver driving fluid to the medicine storage container 12.

[0036] like Figure 2 As shown, the battery 14 is electrically connected to the liquid circuit switch 25, and the liquid circuit switch 25 is electrically connected to the control circuit board 16;

[0037] The control circuit board 16 is electrically connected to the driver 13.

[0038] This solution has the advantages of compact structure and high space utilization.

[0039] The circuit board is set on one side of the space in this solution. The battery 14, driver 13 and liquid circuit switch 25 are set in the space in front of the circuit board. The liquid bag 15 is placed on the circuit board. Through the arrangement of the structure, the space utilization of the installation chamber is effectively improved, thereby effectively reducing the volume of the entire micro pump delivery system.

[0040] Additionally, it should be noted that, due to the appendix Figure 1 This is a schematic diagram from a top-down view, with the liquid bag 15 positioned above the control circuit board 16, thus obstructing the control circuit board 16. Therefore, in the attached... Figure 1 The control circuit board 16 is not shown in the image.

[0041] Furthermore, the liquid bag 15 has a flat structure to prevent it from being too tall and to ensure that it can be effectively laid on the circuit board.

[0042] Furthermore, the driver 13 is a MEMS micropump.

[0043] In one embodiment of this invention, the battery 14 and the driver 13 are located on the same side of the control circuit board 16. The advantages of this arrangement are that it facilitates wiring connections and improves space utilization.

[0044] Furthermore, the driver 13 is located between the battery 14 and the drug reservoir 12. The technical advantage here is that the MEMS micropump is placed in the middle position, which facilitates the installation of the liquid circuit pipeline and the liquid circuit switch 25, and reduces the liquid circuit filling volume.

[0045] In one embodiment of this invention, the liquid circuit switch 25 is located on the side of the battery 14 opposite to the control circuit board 16.

[0046] Among them, such as Figure 3 As shown, the liquid line is connected to the liquid bag 15, passes through the left and front sides of the battery 14, and is connected to the input port of the driver 13 through the liquid line switch 25. At this time, the liquid line is arranged around the battery 14 and will not intersect with the circuit.

[0047] Furthermore, the battery 14 is cylindrical, with wiring on both sides. The left side of the battery 14 is used for arranging liquid circuit lines. For example... Figure 2 As shown, the front end of the battery 14 is connected to the input end of the liquid circuit switch 25 via a wire, and the lead end of the liquid circuit switch 25 is connected to the control circuit board 16 via a wire. The control circuit board 16 is electrically connected to the driver 13.

[0048] In this design, the liquid lines are arranged outside the circuit, making the pipeline layout more compact and effectively improving space utilization.

[0049] The control circuit board 16 is used to drive the MEMS micropump with voltage, and the MEMS micropump is used to feed back pressure data to the control circuit board 16.

[0050] As one embodiment of this example, the cavity of the drug reservoir 12 has a piston 17, which divides the cavity into a drug storage chamber 18 and a driving fluid storage chamber 19. The driver 13 is used to deliver the driving fluid to the driving fluid storage chamber 19.

[0051] Furthermore, the driving fluid is oxygen-free pure water.

[0052] In one embodiment of this invention, a bottom cover 20 is installed at the end of the driving fluid storage chamber 19 away from the drug storage chamber 18, and an exhaust valve 21 is detachably installed on the bottom cover 20. Channels are provided through both the left and right end faces of the bottom cover 20; one end of the channel is used to connect to the output end of the driver 13, and the other end is used to install the exhaust valve 21. A recess is provided on the rear end face of the bottom cover 20, communicating with the channels, for conveying the driving fluid in the channels to the driving fluid storage chamber 19 of the drug storage container 12.

[0053] Furthermore, a rubber stopper is installed at the other end of the channel, and the needle on the vent valve 21 is inserted into the rubber stopper, with the needle having a through hole. This allows gas inside the channel, liquid lines, and actuator 13 to be discharged through the vent valve 21. When the vent valve 21 is pulled out of the rubber stopper, the self-sealing action of the rubber stopper ensures that the other end of the channel remains sealed.

[0054] As one embodiment of this example, the end of the medicine storage container 12 away from the bottom cover 20 is provided with a medicine inlet 22 that communicates with the medicine storage chamber 18.

[0055] In one embodiment of this invention, a needle insertion device 23 is installed on the side wall of the drug reservoir 12, and the needle insertion device 23 is located on the side of the control circuit board 16 opposite to the driver 13. A Luer needle is provided on the needle outlet 24 of the needle insertion device 23 for infusing the drug solution.

[0056] In one embodiment of this invention, the needle insertion device 23 is centrally located on the side wall of the housing 11. This is intended to optimize the customer experience.

[0057] Furthermore, the housing 11 has multiple sidewalls, with the needle insertion device 23 centrally located on the rear sidewall of the housing.

[0058] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A micropump infusion system, characterized in that, The device includes a housing (11), a medicine reservoir (12), a driver (13), a battery (14), a liquid bag (15), and a control circuit board (16). The housing (11) has an installation chamber inside. The liquid bag (15), the control circuit board (16), the battery (14), and the driver (13) are arranged in one side of the installation chamber, and the medicine reservoir (12) is installed in the other side of the installation chamber. The liquid bag (15) is arranged above the control circuit board (16); The driver (13) is connected to the liquid bag (15) via a liquid circuit switch (25), and the driver (13) is used to deliver driving fluid to the medicine reservoir (12); The battery (14) is electrically connected to the liquid circuit switch (25), and the liquid circuit switch (25) is electrically connected to the control circuit board (16); The control circuit board (16) is electrically connected to the driver (13).

2. The micropump infusion system according to claim 1, characterized in that, The battery (14) and the driver (13) are located on the same side of the control circuit board (16), and the driver (13) is located between the battery (14) and the medicine reservoir (12).

3. The micropump infusion system according to claim 2, characterized in that, The liquid circuit switch (25) is located on the side of the battery (14) opposite to the control circuit board (16).

4. The micropump infusion system according to claim 1, characterized in that, The cavity of the drug reservoir (12) has a piston (17) that divides the cavity into a drug storage chamber (18) and a driving fluid storage chamber (19). The actuator (13) is used to deliver driving fluid to the driving fluid storage chamber (19).

5. The micropump infusion system according to claim 4, characterized in that, A bottom cover (20) is installed at the end of the driving fluid storage chamber (19) away from the drug storage chamber (18), and an exhaust valve (21) is detachably installed on the bottom cover (20).

6. The micropump infusion system according to claim 5, characterized in that, The medicine storage container (12) has a medicine inlet (22) at one end away from the bottom cover (20) that communicates with the medicine storage chamber (18).

7. The micropump infusion system according to claim 6, characterized in that, A needle insertion device (23) is installed on the side wall of the medicine reservoir (12), and the needle insertion device (23) is located on the side of the control circuit board (16) opposite to the driver (13).

8. The micropump infusion system according to claim 7, characterized in that, The needle insertion device (23) is centrally located on the side wall of the outer casing (11).

9. The micropump infusion system according to claim 1, characterized in that, The battery (14) is cylindrical, and the two sides of the battery (14) are used for wiring.

10. The micropump infusion system according to claim 1, characterized in that, The driver (13) is a MEMS micropump.

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