A portable micro-infusion pump with adjustable flow rate

Abstract

The application relates to the technical field of medical supplies, in particular to a portable micro-infusion pump with adjustable flow rate. The portable micro-infusion pump comprises a flow regulator, a pipeline connected with the flow regulator, an infusion structure connected with one end of the pipeline, a connector connected with the other end of the pipeline, and a flow detector connected with the pipeline and located between the flow regulator and the connector, wherein the flow regulator comprises a connecting pipe, a flow channel body arranged in the connecting pipe, a sliding assembly located in a first shell, and a braking and locking assembly. Under the action of the braking and locking assembly, the sliding assembly in the flow regulator can drive a shielding block to slide on one side of the flow channel body, the covering area of micropores on the flow channel body is changed, the effective flow passage cross-sectional area and the fluid resistance of the flow channel are adjusted, the control of the infusion flow rate is realized, and the flow rate can be flexibly adjusted in the infusion process according to the actual needs of patient conditions, drug characteristics and the like.

Description

Technical Field

[0001] This invention relates to the field of medical supplies technology, and in particular to a portable micro-infusion pump with adjustable flow rate. Background Technology

[0002] A disposable micro-infusion pump is an infusion device that is discarded after use. It is used to precisely control the infusion rate of small doses of medication. Disposable micro-infusion pumps are portable, reducing infusion interruptions caused by toilet breaks, activity, etc., maintaining stable blood drug concentrations, and facilitating early patient ambulation. This reduces the risk of infection associated with prolonged bed rest and minimizes the occurrence of complications. For healthcare workers, it reduces the workload of installing and disassembling the pump, improving nursing efficiency.

[0003] Traditional mechanical flow limiters rely mainly on internal capillary structures to achieve fixed control of fluid flow rate. However, this design is susceptible to system pressure fluctuations and pressure decay caused by long-term use, resulting in decreased flow rate stability. Its overall error range usually exceeds plus or minus 10%.

[0004] The design of rate adjustment devices for disposable infusion micropumps needs to strike a balance between low cost, high precision, passive operation (no power required), and environmental robustness. Considering current technological trends and clinical needs, the slider-type micro-orifice array dynamic flow limiting technology is the optimal solution. Through the coordinated design of the micro-orifice gaps and sliding baffles, the shielding ratio of the micro-column array is adjusted mechanically to change the equivalent flow resistance and cross-sectional area, achieving continuous and graded flow regulation while simultaneously improving precision and anti-clogging properties.

[0005] Patent document CN219022670U discloses a disposable infusion pump with a flow rate detection device. The pump includes a housing with an elastic liquid reservoir inside. The elastic liquid reservoir is connected to the inlet end of the infusion tubing, and the other end of the infusion tubing has an external conical connector. A flow rate detection device is located near the external conical connector on the infusion tubing. The flow rate detection device consists of an infusion section and a detection section. Infusion water enters the housing through the infusion tubing, driving the fan blades to rotate, which in turn drives the connecting block and connecting column to rotate synchronously. The fan blade rotation speed is detected by a speed detection module and displayed on a screen. An alarm is triggered to alert medical personnel or users to changes in the infusion rate, preventing delays in detection and potential problems.

[0006] When using the above technology, the following technical problems were found in the existing technology: the flow rate of the drug solution is not constant when using an elastic reservoir (such as silicone material) as a power source and the pressure generated by the contraction of the reservoir is used. It is also difficult to adjust the flow rate according to the patient's condition and the drug during infusion, which will affect the treatment effect. Based on this, a portable micro-infusion pump with adjustable flow rate is designed to provide another technical solution to the above technical problems. Summary of the Invention

[0007] Therefore, it is necessary to provide a portable micro-infusion pump that can adjust the flow rate by controlling the cross-sectional area of ​​the infusion line and the fluid resistance, and by using a mechanical structure to change the opening size of the infusion path, thereby achieving flow rate regulation.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A flow regulator includes a connecting pipe for liquid flow, and further includes: A flow channel body, which is disposed inside a connecting pipe, is used for the flow of liquid; A first outer shell is disposed above the connecting pipe, corresponding to the flow channel body, and its interior communicates with the interior of the connecting pipe; A sliding assembly, located within a first housing, for extending through the first housing into a connecting pipe to partially cover one side of the flow channel body, thereby reducing the flow rate through the flow channel body; and A braking and locking assembly is provided on the sliding assembly. It is used to drive the sliding assembly into the connecting tube and to fix the depth of the sliding assembly extending into the connecting tube, so as to fix the flow rate of the flow channel body, thereby achieving precise control of the infusion flow rate.

[0009] In a preferred embodiment of the flow regulator provided by the present invention, the braking and locking assembly includes a set of locking teeth, each having multiple grooves, a locking part connected to the top of the sliding assembly, and a button for moving the locking part to or from any groove. The button is exposed through a window on the first housing, so that when the button is pressed, the locking part is forced downward and disengages from the current groove. At this time, the sliding assembly can slide freely within the first housing to adjust its depth extending into the connecting pipe, thereby changing the area covered by the flow channel and regulating the flow rate.

[0010] In a preferred embodiment of the flow regulator provided by the present invention, the locking part includes a second outer shell, a first cavity opened in the second outer shell, a locking plate adapted to be located in the first cavity, a set of second cavities all opened in the second outer shell and communicating with the first cavity, and a spring with one end abutting against the bottom end of the second cavity and the other end abutting against the locking plate, so that when the locking plate moves under the elastic force of the spring, the locking plate can be locked into the tooth groove of the locking tooth body, thereby locking the position of the sliding component.

[0011] As a preferred embodiment of the flow regulator provided by the present invention, a baffle is fixedly connected to the other side of the card plate. The length of the baffle is greater than the length of the window so as to cover the window. When the button is not pressed, the baffle can completely cover the window on the first housing, effectively preventing external dust, liquid and other impurities from entering the interior of the first housing through the window, and avoiding contamination or damage to the internal sliding components, card teeth and other components. The button is fixed to the baffle through the window, and the button is used to drive the card plate to compress the spring, so that the card plate moves in the first cavity to be in or out of any tooth groove, thereby realizing the switching between the unlocking and locking states of the sliding component.

[0012] In a preferred embodiment of the flow regulator provided by the present invention, the sliding assembly includes a slidable sealing block adapted to the first housing, a shielding block fixed to the bottom of the sealing block and used to enter the connecting pipe and fit against the flow channel body, and a first connecting rod fixed between the sealing block and the second housing. Thus, when the first housing slides, the sealing block and the shielding block move synchronously through the first connecting rod, thereby causing the shielding block to slide on one side of the flow channel body in the connecting pipe. Since the shielding block fits against the flow channel body, its different positions in the flow channel body will change the effective flow cross-sectional area of ​​the flow channel, thereby realizing the regulation of the infusion flow rate.

[0013] As a preferred embodiment of the flow regulator provided by the present invention, the flow channel body includes a main body fixed or detachable in the connecting pipe, and a plurality of micropores arrayed on the main body, so that when the liquid flows through the connecting pipe, it must flow through these micropores on the main body.

[0014] As a preferred embodiment of the flow regulator provided by the present invention, it further includes a reset component. The reset component includes a second connecting rod fixed to the top of the second housing and a tension spring with its bottom end attached to the second connecting rod and its top end attached to the first housing. When the first housing slides axially under the action of an external force and drives the sliding component to adjust the effective flow cross-sectional area of ​​the flow channel, the tension spring will be stretched accordingly to store elastic potential energy. When the external force applied to the first housing is removed, the tension spring can rely on its own elastic restoring force to generate a reverse pulling or pushing force on the first housing through the second connecting rod, causing the first housing to drive the sliding component back to the initial position, thereby resetting the blocking block and restoring the effective flow cross-sectional area of ​​the flow channel to the initial state.

[0015] As a preferred embodiment of the portable micro-infusion pump with adjustable flow rate provided by the present invention, it further includes a guide member, which includes a slide rail fixed to one side inside the first housing and a slide groove formed on the first housing, so that the first housing can slide on the slide rail through the slide groove, ensuring that the sliding component can move accurately along a predetermined trajectory.

[0016] A portable micro-infusion pump with adjustable flow rate includes a flow regulator as described above, and further includes: a tubing connected to the flow regulator, an infusion structure connected to one end of the tubing, a connector connected to the other end of the tubing, and a flow detector connected to the tubing and located between the flow regulator and the connector, thereby allowing the medication delivered by the infusion structure to be sequentially introduced into the flow regulator and the flow detector through the tubing, and finally output to the patient through the connector.

[0017] As a preferred embodiment of the portable micro-infusion pump with adjustable flow rate provided by the present invention, the infusion structure includes a third outer shell and an elastic reservoir located inside the third outer shell. One end of the pipeline is connected to the elastic reservoir through the bottom inlet of the third outer shell, so that the liquid medicine in the elastic reservoir can be delivered to the downstream flow regulator through the pipeline under the action of its own elastic contraction force.

[0018] The flow detector includes an integral mounting part on the pipeline and an impeller-type flow meter mounted on the mounting part, enabling real-time acquisition of the flow parameters of the liquid inside the pipeline.

[0019] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0020] Meanwhile, through the above technical solutions, the present invention has at least the following beneficial effects: This invention provides a portable micro-infusion pump with adjustable flow rate. Through a sliding component in the flow regulator, under the action of braking and locking components, a blocking block can slide on one side of the flow channel. By changing the covering area of ​​the micropores on the flow channel, the effective flow cross-sectional area and fluid resistance of the flow channel are adjusted, thereby achieving control of the infusion flow rate. Compared to traditional mechanical flow restrictors that can only achieve fixed flow rate control, the flow regulator of this invention can flexibly adjust the flow rate during infusion according to the actual needs such as the patient's condition and drug characteristics. This effectively overcomes the problem of inconsistent flow rate caused by traditional elastic reservoir power sources, improving the stability of treatment effects.

[0021] The reset component allows the sliding component to automatically reset after the external force is removed, restoring the effective flow cross-sectional area of ​​the flow channel to its initial state, facilitating the next use or readjustment of the flow rate; the guide component ensures the precision and stability of the sliding component's movement, further guaranteeing the accuracy of flow rate adjustment.

[0022] In addition, the entire device has a compact structure, requires no power drive, and achieves passive operation, meeting the requirements of low cost and environmental robustness for single use. At the same time, the dynamic flow limiting technology of slider-type micro-orifice array improves the accuracy of flow rate regulation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the flow regulator of the present invention; Figure 2 This is a partial cross-sectional structural schematic diagram of the flow regulator of the present invention; Figure 3 For the flow regulator of the present invention Figure 2 A structural schematic diagram from another perspective of partial cross-section; Figure 4 This is a side cross-sectional view of the flow regulator of the present invention to show its internal structure; Figure 5 For the flow regulator of the present invention in Figure 4 A schematic diagram of the structure with reduced flow channel volume in cross-sectional view; Figure 6 This is a schematic diagram of the internal structure of the snap-fit ​​portion in the flow regulator of the present invention, viewed from the top direction. Figure 7 This is a schematic diagram showing the internal structure of the snap-fit ​​part in the flow regulator of the present invention, viewed from the side in the use state and partially enlarged. Figure 8 This is a schematic diagram of the overall structure of the portable micro-infusion pump with adjustable flow rate according to the present invention. Figure 9 This is an exploded structural diagram of the flow detector of the portable micro-infusion pump with adjustable flow rate of the present invention. Figure 10 This is a schematic diagram of the flow detector of the portable micro-infusion pump with adjustable flow rate according to the present invention.

[0025] In the diagram: 100, flow regulator; 101, connecting pipe; 102, window; 110, flow channel body; 111, main body; 112, micropore; 120, first outer shell; 200, sliding assembly; 210, sealing block; 220, shielding block; 230, first connecting rod; 300, braking and locking assembly; 310, locking tooth body; 311, tooth groove; 320, locking part; 321, second outer shell; 322, first cavity; 323, locking mechanism. Plate; 324, Second cavity; 325, Spring; 326, Baffle; 330, Button; 400, Reset assembly; 410, Second connecting rod; 420, Tension spring; 500, Guide; 510, Slide rail; 520, Slide groove; 600, Pipeline; 700, Infusion structure; 710, Third housing; 720, Elastic reservoir; 800, Connector; 900, Flow detector; 910, Mounting part; 920, Impeller flow meter. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] like Figures 1 to 5 As shown, where Figure 1 This is a schematic diagram of the overall structure of the flow regulator 100; Figure 2 A partial cross-sectional structural schematic diagram of the flow regulator 100; Figure 3 100 pairs of flow regulators Figure 2 A structural schematic diagram from another perspective of partial cross-section; Figure 4 A side cross-sectional view of the flow regulator 100 to show its internal structure; Figure 5 For the regulator 100 Figure 4 A schematic diagram of the structure through which the flow rate passes in the narrowed flow channel 110 under cross-sectional view.

[0031] The first aspect of this application provides a flow regulator 100, which includes a connecting pipe 101, a flow channel body 110, a first housing 120, a sliding assembly 200, a braking and locking assembly 300, a reset assembly 400, and a guide member 500; wherein the connecting pipe 101 is used to connect to a liquid flow path to realize the input and output of liquid; The flow channel body 110 is disposed inside the connecting pipe 101 and is used to form a flow channel for fluid to flow inside the connecting pipe 101; The first outer casing 120 serves as the main support structure of the flow regulator 100, providing installation and protection space for internal components such as the sliding assembly 200, braking and locking assembly 300, reset assembly 400, and guide member 500. Specifically, the sliding assembly 200 is movably disposed within the first outer casing 120 to cooperate with the flow channel body 110. Through its sliding action, it can change the effective flow cross-sectional area of ​​the flow channel body 110, thereby achieving regulation of the liquid flow rate. The braking and locking assembly 300 is used to drive the sliding assembly 200 to move within the first housing 120, and after the sliding assembly 200 is adjusted to the target position, it locks the position after movement to maintain the current flow regulation state and effectively prevents the sliding assembly 200 from moving unexpectedly under fluid pressure or other external forces. The reset component 400 is located inside the first housing 120 and between the braking and locking component 300. It is used to drive the sliding component 200 back to its initial position after the braking and locking component 300 is released from its locked state, so as to perform the next flow regulation operation. The guide member 500 is located inside the first housing 120 and between the braking and locking assembly 300. It is used to guide the sliding direction of the sliding assembly 200, ensuring that the sliding assembly 200 can move smoothly and accurately, thereby ensuring the accuracy of flow regulation.

[0032] like Figure 3As shown, the flow channel 110 includes a body 111 and multiple micropores 112. The body 111 serves as the main structure of the flow channel 110, and its material is typically selected to be corrosion-resistant and high-strength to ensure that it is not easily corroded or damaged when in contact with various liquid media for a long time. The body 111 is installed in the connecting pipe 101 by means of fixing or detachment. The fixing method can be welding or integral injection molding to ensure its stability under fluid pressure. The detachment can be achieved by threaded connection. The detachable connection facilitates subsequent cleaning, maintenance or replacement of the body 111 and micropores 112, improving the ease of use and maintenance efficiency of the equipment.

[0033] Multiple micropores 112 are arrayed on the body 111 to form a flow path for liquid. It should be noted that the pore size, number, and arrangement of these micropores 112 are customized according to the specific requirements of liquid flow rate, flow velocity, or dispersion effect in actual applications. For example, in scenarios requiring precise control of small flow rates, the pore size of the micropores 112 will be designed to be smaller, while the total flow rate requirement will be met by reasonably increasing the number of micropores. For applications requiring rapid mixing or dispersion of liquids, the micropores 112 can be arranged in an alternating pattern to enhance the turbulence effect when the liquid flows through.

[0034] like Figure 4 As shown, in some embodiments, the braking and locking assembly 300 further includes a set of locking teeth 310, a locking part 320, and a button 330. The set of locking teeth 310 are all fixedly disposed on one side inside the first housing 120, and the locking teeth 310 are provided with a plurality of grooves 311. These grooves 311 are arranged linearly and equidistantly along the sliding direction of the sliding assembly 200 to form a rack-like structure, providing multiple locking positions for the locking part 320. The latching part 320 is connected to the top of the sliding component 200 and is used to cooperate with the tooth groove 311. That is, it can be disengaged from the tooth groove 311 of the latching body 310 under the action of the button 330, thereby restoring the movable state of the sliding component 200.

[0035] The button 330 serves as an operating component, with one end connected to the latching part 320 and the other end passing through the window 102 on the first housing 120 and protruding from the surface of the first housing 120 for easy pressing operation by the user. When the user presses the button 330, the button 330 will cause the latching part 320 to overcome the force of the internal elastic element (see below for details), causing it to disengage from the tooth groove 311 of the latching tooth body 310. At this time, the sliding component 200 can slide freely. After the button 330 is released, under the reset action of the elastic element, the latching part 320 re-engages into the corresponding tooth groove 311, thereby locking the sliding component 200 in the current position.

[0036] like Figure 6 and Figure 7 As shown, Figure 6 A cross-sectional view of the snap-fit ​​portion 320 from the top direction is shown to illustrate the internal structure. Figure 7 This is a side cross-sectional view of the snap-fit ​​part 320 in its use state, showing the internal structure and a partially enlarged view.

[0037] In this embodiment, the latching part 320 further includes a second outer shell 321, a first cavity 322, a latching plate 323, a second cavity 324, and a spring 325 (elastic element). The second outer shell 321 is the main frame of the latching part 320. The first cavity 322 formed inside it provides space for the latching plate 323 to be accommodated and slid. Specifically, the first cavity 322 is opened on one side of the second outer shell 321 near the latching tooth body 310, and one side of the first cavity 322 is connected to the outside, so that the latching plate 323 can extend or retract from the second outer shell 321 through the connecting port to achieve latching and disengagement with the tooth groove 311 on the latching tooth body 310.

[0038] The locking plate 323 is adapted to be located in the first cavity 322, and its side facing the locking tooth body 310 is used to match the tooth groove 311. When the locking plate 323 extends out of the first cavity 322 under the action of the spring 325, one side of the locking plate 323 can be embedded in the tooth groove 311, thereby locking the sliding component 200 in the current position.

[0039] The second cavity 324 is located inside the second housing 321 on the other side away from the toothed body 310 and is connected to the first cavity 322. It is used to provide installation space for the spring 325. Specifically, one end of the spring 325 abuts against the inner bottom end of the second cavity 324, and the other end abuts against the end of the locking plate 323 away from the toothed body 310. When the button 330 is not pressed, the spring 325 is in a naturally extended state, applying a pushing force to the locking plate 323 in the direction of the toothed body 310, ensuring reliable engagement between the locking plate 323 and the toothed groove 311. When the user presses button 330, button 330 moves the entire card plate 323, causing card plate 323 to compress spring 325. After overcoming the elastic force of spring 325, one side of card plate 323 exits from tooth groove 311, at which time the sliding component 200 can be driven to slide freely to adjust its position.

[0040] It should be noted that in this embodiment, the button 330 is indirectly connected to the card plate 323 through the baffle 326. Specifically, the baffle 326 is vertically arranged between a set of card teeth 310 (i.e., the inner part of the corresponding window 102), and the size of the baffle 326 is larger than the size of the window 102, so that the baffle 326 can block the window 102, preventing external dust, impurities, etc. from entering the housing through the window 102, and ensuring the cleanliness and stable operation of the internal structure.

[0041] Furthermore, since the baffle 326 is fixedly connected between the button 330 and the latch plate 323, a linkage structure is formed between the button 330, the baffle 326, and the latch plate 323. This allows the force of the button 330 to be effectively transmitted to the latch plate 323 through the baffle 326 when the user presses the button 330 from the outside. This drives the latch plate 323 to move into the first cavity 322 and compress the spring 325 in the second cavity 324, thereby realizing the unlocking function of the sliding component 200. In addition, the baffle 326 further enhances the stability of the connection between the button 330 and the latch plate 323, ensuring the reliability during operation.

[0042] In this embodiment, the sliding assembly 200 further includes a sealing block 210, a blocking block 220, and a first connecting rod 230. The sealing block 210 is made of a highly elastic wear-resistant material (e.g., nitrile rubber or fluororubber), and its outer peripheral wall is tightly fitted with the inner wall of the first housing 120 to form a good sliding seal fit, which can effectively prevent fluid from leaking from the gap between the sealing block 210 and the first housing 120 during the movement of the sliding assembly 200.

[0043] The blocking block 220 is fixed to the bottom of the sealing block 210. It is made of a hard, wear-resistant material (such as PTFE or stainless steel) and its shape is adapted to the flow channel 110 inside the connecting pipe 101. When the sliding assembly 200 is locked by the braking and locking assembly 300 (e.g., locked in the middle region of the locking tooth body 310, such as...), Figure 5 As shown), the lower end of the blocking block 220 can fit tightly against one side of the flow channel body 110, thereby blocking part of the flow channel of the flow channel body 110 and reducing the fluid flow rate. When the sliding component 200 unlocks and continues to slide up or down to different positions, the contact area between the blocking block 220 and the flow channel body 110 changes, thereby precisely controlling the opening and closing degree of the flow channel to meet the needs of fine-tuning the fluid flow rate under different operating conditions. In addition, the contact surface between the blocking block 220 and the flow channel body 110 is provided with a wear-resistant layer, which ensures that good sealing and wear resistance are maintained even under long-term frequent contact and relative movement.

[0044] The first connecting rod 230 is a slender rod-shaped structure made of metal. One end is vertically fixed to the top center of the sealing block 210, and the other end extends upward and is fixedly connected to the bottom of the second housing 321. When the locking part 320 is not locked, the locking part 320 can be moved by the button 330, thereby causing the sliding component 200 to move along the length of the first housing 120.

[0045] In this embodiment, the reset assembly 400 includes a second connecting rod 410 and a tension spring 420. The second connecting rod 410 is a metal rod of the same material as the first connecting rod 230. One end of the rod is vertically welded to the center of the top surface of the second housing 321, and the other end extends upward to form an annular hook for attaching the tension spring 420.

[0046] The bottom end of the tension spring 420 is connected to the annular hook at the top of the second connecting rod 410 via a hook, and the top end is hooked to a fixed hanging point inside the first housing 120. This fixed hanging point is located in the upper area of ​​the inner wall of the first housing 120 and is aligned with the central axis of the second connecting rod 410. When the user presses the button 330 to disengage the locking part 320 from the locking tooth body 310, the tension spring 420 will pull the second housing 321 and the sliding component 200 connected to it upwards due to its own elastic restoring force. When the user needs to overcome the tension of the tension spring 420 to move the sliding component 200 downward, simply press down on the button 330 to move the locking part 320 downward against the elastic force of the tension spring 420. After moving to the target position, release the button 330 to relock with the corresponding tooth groove 311, thereby locking the position of the sliding component 200.

[0047] In this embodiment, the guide 500 further includes a slide rail 510 and a slide groove 520, wherein the slide rail 510 is a strip structure extending along the length direction of the first housing 120, and its cross-section is preferably "T" shaped (only for illustration in the figure). Specifically, the slide rail 510 is fixedly installed on the other side wall of the first housing 120 relative to the toothed body 310, and is used to provide a stable guide trajectory for the movement of the sliding assembly 200.

[0048] The groove 520 is correspondingly opened on the side of the first housing 120 opposite to the slide rail 510. Its shape is adapted to the slide rail 510, so that the first housing 120 can form a sliding engagement with the slide rail 510 through the groove 520, thereby guiding the sliding component 200 to move smoothly up and down inside the first housing 120, avoiding deviation or jamming during the sliding process, and ensuring the accuracy and stability of flow control.

[0049] It should be noted that guide component 500 includes, but is not limited to, such as Figure 6 In some embodiments, as shown in the figure, the guide members 500 may also be provided in the first housing 120 on both sides of the toothed body 310 (not shown in the figure), thereby further improving the overall stability of the sliding assembly 200 when it moves.

[0050] like Figure 8 As shown, Figure 8 This is a schematic diagram of the overall structure of a portable micro-infusion pump with adjustable flow rate.

[0051] Another aspect of this application provides a portable micro-infusion pump with adjustable flow rate. In addition to the flow regulator 100 as described above, the micro-infusion pump also includes: a tubing 600, an infusion structure 700, a connector 800, and a flow detector 900. The tubing 600 serves as a channel for drug delivery, with one end connected to the outlet of the infusion structure 700 and the other end connected to the connector 800, for stably delivering the drug output from the infusion structure 700 to the patient.

[0052] The infusion structure 700 provides the power to deliver the medication into the tubing 600.

[0053] The connector 800 is designed as a standard medical interface, which can be quickly and securely connected to the infusion needle or other medical device at the patient end to ensure that no drug leakage occurs during infusion.

[0054] The flow regulator 100 and the flow detector 900 are installed at different positions in the pipeline 600. The flow regulator 100 is connected in series on the side of the pipeline 600 near the infusion structure 700 to precisely regulate the flow rate of the medicine in the pipeline 600. The flow detector 900 is set on the pipeline 600 near the connector 800 to monitor the actual flow rate of the medicine flowing through the pipeline 600 in real time. Based on the flow rate value monitored by the flow detector 900, the flow regulator 100 is driven to make dynamic adjustments, thereby forming a closed-loop flow control circuit and further improving the infusion accuracy of the infusion pump.

[0055] like Figure 9 As shown, Figure 9 This is a schematic diagram of the cross-sectional structure of the infusion structure 700.

[0056] In this embodiment, the infusion structure 700 further includes a third outer shell 710 and an elastic reservoir 720, wherein the third outer shell 710 is a rigid structure that can provide stable support and protection for the internal elastic reservoir 720.

[0057] The elastic reservoir 720 is made of silicone or rubber and is used to store the drug solution to be infused. When the drug solution is injected into the elastic reservoir 720, the elastic reservoir 720 will expand due to the filling of the drug solution. When one end of the tubing 600 is connected to the elastic reservoir 720, the drug solution can flow into the tubing 600 continuously and stably under the action of elastic potential energy as the elastic reservoir 720 elastically contracts.

[0058] like Figure 10 As shown, Figure 10 This is a schematic diagram of the exploded structure of the flow detector 900.

[0059] In this embodiment, the flow detector 900 mainly includes a mounting part 910, an impeller flow meter 920 (for illustration only), a power cord, and a signal line; wherein the mounting part 910 is integrally formed with the pipeline 600, and its interior is connected to the interior of the pipeline 600.

[0060] The impeller flow meter 920 is installed on the pipeline 600 via the mounting part 910, and is connected to the control unit via a signal line and to an external power source via a power line.

[0061] The flow detection process of the impeller flow meter 920 is as follows: the mechanical rotation of the impeller is converted into a processable electrical signal, which is transmitted to the control unit. The control unit calculates the current flow value in the pipeline 600 by analyzing and processing the electrical signal.

[0062] Finally, it should be noted that the specific structure and connection method of the installation part 910 and the impeller flow meter 920 are only illustrative examples. Those skilled in the art can make adaptive adjustments and optimizations to the specific structure, shape, and size of the installation part 910 and the structure and installation method of the impeller flow meter 920 according to actual application needs, without departing from the concept of the present invention, as long as stable and accurate detection of the liquid flow in the pipeline 600 can be achieved.

[0063] The portable micro-infusion pump with adjustable flow rate provided by this invention is used as follows: Medical staff first inject the medication to be infused into the elastic reservoir 720, causing it to expand. Then, one end of the tubing 600 is tightly connected to the interface of the elastic reservoir 720, and the other end is connected to the patient's infusion site or to other infusion tubing via the connector 800.

[0064] Under the elastic contraction force of the elastic reservoir 720, the medication begins to flow continuously and stably into the tubing 600. At this time, the flow detector 900 on the tubing 600 starts to work, monitoring real-time flow data and dynamically adjusting the flow regulator 100 based on the flow data, thereby ensuring that the flow rate remains within the preset ideal range throughout the infusion process, achieving safe and precise micro-infusion therapy for patients.

[0065] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A flow regulator (100) comprising a connecting pipe (101) for liquid flow, characterized in that, Also includes: A flow channel (110) is provided inside a connecting pipe (101) for the flow of liquid; The first outer shell (120) is disposed above the connecting pipe (101) corresponding to the flow channel body (110), and its interior is in communication with the interior of the connecting pipe (101); A sliding assembly (200) is located inside a first housing (120) and is used to extend through the first housing (120) into a connecting pipe (101) to partially cover one side of the flow channel body (110), thereby reducing the flow rate through the flow channel body (110); as well as Braking and locking assembly (300), which is disposed on sliding assembly (200), is used to drive sliding assembly (200) into connecting pipe (101) and to fix the depth of sliding assembly (200) extending into connecting pipe (101) so as to fix the flow rate of the flow channel body (110).

2. The flow regulator (100) according to claim 1, characterized in that, The braking and locking assembly (300) includes a set of locking teeth (310) each having multiple grooves (311), a locking part (320) connected to the top of the sliding assembly (200), and a button (330) for moving the locking part (320) into or out of any groove (311) and exposed to the first housing (120) through a window (102) opened on the first housing (120).

3. The flow regulator (100) according to claim 2, characterized in that, The latching part (320) includes a second outer shell (321), a first cavity (322) opened in the second outer shell (321), a latching plate (323) adapted to be located in the first cavity (322), a set of second cavities (324) all opened in the second outer shell (321) and communicating with the first cavity (322), and a spring (325) with one end abutting against the bottom end of the second cavity (324) and the other end abutting against the latching plate (323).

4. The flow regulator (100) according to claim 3, characterized in that, A baffle (326) is fixedly connected to the other side of the card plate (323). The length of the baffle (326) is greater than the length of the window (102) so as to cover the window (102). The button (330) is fixed on the baffle (326) through the window (102), and the button (330) is used to drive the card plate (323) to compress the spring (325), so that the card plate (323) is positioned or disengaged from any tooth groove (311) by moving within the first cavity (322).

5. The flow regulator (100) according to claim 3, characterized in that, The sliding assembly (200) includes a slidable sealing block (210) adapted to the first housing (120), a shielding block (220) fixed to the bottom of the sealing block (210) and used to enter the connecting pipe (101) and fit against the flow channel body (110), and a first connecting rod (230) fixed between the sealing block (210) and the second housing (321).

6. The flow regulator (100) according to claim 1, characterized in that, The flow channel body (110) includes a body (111) fixed or detachable within the connecting pipe (101), and a plurality of micropores (112) arrayed on the body (111).

7. The flow regulator (100) according to claim 3, characterized in that, It also includes a reset assembly (400), which includes a second connecting rod (410) fixed to the top of the second housing (321) and a tension spring (420) with its bottom end attached to the second connecting rod (410) and its top end attached to the first housing (120).

8. The flow regulator (100) according to claim 7, characterized in that, It also includes a guide (500), which includes a slide rail (510) fixed inside one side of the first housing (120) and a groove (520) formed on the first housing (120) so that the first housing (120) can slide on the slide rail (510) through the groove (520).

9. A portable micro-infusion pump with adjustable flow rate, comprising a flow regulator (100) as described in any one of claims 1 to 8, characterized in that, Also includes: The conduit (600) connected to the flow regulator (100), the infusion structure (700) connected to one end of the conduit (600), the connector (800) connected to the other end of the conduit (600), and the flow detector (900) connected to the conduit (600) and located between the flow regulator (100) and the connector (800).

10. The portable micro-infusion pump with adjustable flow rate according to claim 9, characterized in that, The infusion structure (700) includes a third outer shell (710) and an elastic reservoir (720) located inside the third outer shell (710). One end of the tubing (600) is connected to the elastic reservoir (720) through the bottom inlet of the third outer shell (710). The flow detector (900) includes a mounting part (910) integrally disposed on the pipeline (600) and an impeller flow meter (920) mounted on the mounting part (910).

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