Medical devices and medical systems for transporting fluids

Abstract

To provide medical devices and medical systems that can transport fluids with high precision. [Solution] The system comprises a liquid reservoir 11, a first passage 12, a flow supply device 13, a drive mechanism 15, a second passage 14, and a throttle valve 16. The throttle valve 16 has a first state and a second state. When the throttle valve 16 is in the first state, the drive mechanism 15 holds the flow supply device 13 at a first volume, and the flow supply device 13 receives a predetermined volume of fluid from the liquid reservoir 11 via the first passage 12. When the throttle valve 16 is in the second state, the drive mechanism 15 holds the flow supply device 13 at a second volume, and the flow supply device 13 supplies a predetermined volume of fluid via the second passage 14. The second volume is smaller than the first volume, and the predetermined volume is determined by the volume difference between the first volume and the second volume. In this case, by acquiring and injecting a predetermined volume of fluid, the effect of numerical quantity control can be achieved, and the fluid can be transported with high precision.

Description

Technical Field

[0001] The present disclosure basically relates to the field of medical devices, and in particular, to medical devices and medical systems for transporting fluids.

Background Art

[0002] For many chronic diseases, corresponding complications, such as chronic diabetes, often cause complications related to blood sugar. In order to delay and reduce the rapid or continuous impact on patients caused by chronic diseases, a technology for automatically dispensing injection drugs to patients can be applied. In the conventional drug dispensing technology, portable drug dispensing systems are widely applied. Usually, it is necessary to implant one pipe subcutaneously. When the abnormality of the patient's physiological characteristics reaches a warning level, the patient can input the dosage of the injection drug via a controller and connect a drug pump containing the drug solution to a pre-reserved pipe for drug dispensing.

[0003] However, in the above conventional drug dispensing technology, there are still great difficulties in accurate drug dispensing. If the dosage is too small or too large, it may cause a delay in the drug response time or an incorrect drug usage amount, resulting in a poor or incorrect therapeutic effect of the drug. Therefore, there is a need for a medical device that can transport fluids with high precision.

Summary of the Invention

[0004] The present disclosure has been made in view of the above-described conventional technical situation, and an object thereof is to provide a medical device and a medical system capable of accurately transporting fluids.

[0005] Therefore, the first aspect of the present invention is a medical device for transporting fluid, comprising: a liquid reservoir for containing fluid; a first passage communicating with the liquid reservoir; a flow supply device for receiving fluid from the liquid reservoir through the first passage and supplying fluid; a drive mechanism for controlling changes in the volume of the flow supply device; a second passage communicating with the flow supply device, receiving fluid from the flow supply device and connecting percutaneously to the body; and a throttle valve for controlling the opening and closing of the first passage and the second passage in conjunction with the drive mechanism. The throttle valve has a first state and a second state, and when the throttle valve is in the first state, the drive mechanism holds the flow supplyer to a first volume and the flow supplyer receives a predetermined volume of fluid from the reservoir through the first passage, and when the throttle valve is in the second state, the drive mechanism holds the flow supplyer to a second volume and the flow supplyer supplies the predetermined volume of fluid through the second passage, the second volume being smaller than the first volume and the predetermined volume being determined by the volume difference between the first volume and the second volume.

[0006] In such cases, storing the fluid in a reservoir of the medical device is convenient for the patient to carry a large amount of fluid and inject it as needed to receive treatment. Through the cooperation between the flow supply, the drive mechanism, and the throttle valve, a predetermined volume of fluid is obtained from the reservoir via the first passage, i.e., the difference between the first and second volumes of the flow supply, and the predetermined volume of fluid is injected into the body via the second passage. This achieves numerical volume control by allowing the medical device to obtain and inject a predetermined volume of fluid when the patient needs to inject fluid, thereby improving the accuracy of infusion.

[0007] In the medical device according to the present invention, when the throttle valve is in the first state, it is preferable that the throttle valve opens the first passage and closes the second passage, and when the throttle valve is in the second state, it is preferable that the throttle valve closes the first passage and opens the second passage. In this case, when the first passage is opened and the second passage is closed, the flow supplyer communicating with the first passage is driven by a drive mechanism, its volume is changed to the first volume to form a negative pressure, and fluid can be obtained from the reservoir communicating with the first passage via the first passage. When the first passage is closed and the second passage is opened, the flow supplyer communicating with the second passage returns to its original volume, the second volume, and fluid can be injected into the body via the second passage.

[0008] In the medical device according to the present invention, the volume of the liquid reservoir is variable, and when fluid is contained in the liquid reservoir, the pressure of the fluid in the reservoir is maintained within a predetermined range, and it is preferable that the pressure of the fluid in the liquid reservoir is greater than the pressure of the fluid in the flow supply unit. In this case, by maintaining the fluid stored in the liquid reservoir within a predetermined pressure range, the fluid can be easily flowed to the flow supply unit through the first passage, and contamination of the fluid by backflow or intrusion of blood can be prevented.

[0009] In the medical device according to the present invention, it is preferable that the liquid reservoir has a refill port that can be sealed. In this case, the refill port allows the liquid reservoir to be periodically replenished with fluid, and the refill port that can seal can maintain the pressure inside the liquid reservoir and reduce the amount of air that enters the reservoir when the liquid reservoir is replenished with fluid, thereby reducing contamination from the external environment.

[0010] In the medical device according to the present invention, the throttle valve preferably includes a first valve that controls the opening and closing of the first passage and a second valve that controls the opening and closing of the second passage, wherein when the first valve closes the first passage, the second valve opens the second passage, and when the first valve opens the first passage, the second valve closes the second passage. In this case, when the first valve opens the first passage and the second valve closes the second passage, the flow supplyer communicating with the first passage is driven by a drive mechanism to change its volume to a first volume, thereby forming a negative pressure and allowing fluid to be obtained from a reservoir communicating with the first passage via the first passage. When the first valve closes the first passage and the second valve opens the second passage, the flow supplyer communicating with the second passage returns to its original volume, the second volume, and can inject fluid into the body via the second passage. Thus, through the continuous conversion between the first and second volumes, the flow supplyer can continuously obtain a predetermined volume of fluid and inject a predetermined volume of fluid into the body via the second passage.

[0011] In the medical device according to the present invention, the drive mechanism preferably includes a first drive mechanism and a second drive mechanism, wherein the first drive mechanism controls the throttle valve to open and close the first passage or the second passage, and the second drive mechanism controls the change in the volume of the flow supply so that the volume of the flow supply is switched between the first volume and the second volume. In this case, through the cooperation of the first drive mechanism and the second drive mechanism, the first drive mechanism drives the throttle valve to a first state, that is, when the first valve opens the first passage and the second valve closes the second passage, the second drive mechanism can be controlled to maintain the volume of the flow supplyer at the first volume, thereby allowing the flow supplyer to create negative pressure and acquire fluid from the reservoir through the first passage. When the fluid fills the first volume and the first drive mechanism drives the throttle valve to a second state, that is, when the first valve closes the first passage and the second valve opens the second passage, the second drive mechanism can be controlled to maintain the volume of the flow supplyer at the second volume, thereby allowing the flow supplyer to transport and inject a predetermined volume of fluid into the body.

[0012] In the medical device according to the present invention, when the first drive mechanism sets the throttle valve to the first state, the throttle valve opens the first passage and closes the second passage, and the second drive mechanism controls the flow supply device to maintain the first volume and receive a predetermined volume of fluid from the reservoir via the first passage. When the first drive mechanism sets the throttle valve to the second state, the throttle valve closes the first passage and opens the second passage, and the second drive mechanism controls the flow supply device to maintain the second volume and supply the predetermined volume of fluid via the second passage. In this case, by controlling the throttle valve to switch between the first and second states using the first drive mechanism, and by combining this with the second drive mechanism to control the flow supply device to switch between the first and second volumes, a predetermined volume of fluid can be continuously acquired and injected into the body, achieving quantitative or numerical control and improving the accuracy of fluid infusion control.

[0013] According to the medical device of the present invention, the throttle valve has a columnar shape and has a first through hole and a second through hole, and the first drive mechanism includes a first driver and a first connector that is driven by the first driver and connected to the throttle valve, and when the first driver drives the first connector to rotate the throttle valve to the first state, the first through hole communicates with the first passage and the second through hole does not communicate with the second passage, and when the first driver drives the first connector to rotate the throttle valve to the second state, the first through hole does not communicate with the first passage and the second through hole communicates with the second passage, which is preferable. In this case, the columnar throttle valve, when driven by the first drive mechanism, can be configured such that the first through-hole communicates with the first passage and the second through-hole does not communicate with the second passage, or the first through-hole does not communicate with the first passage and the second through-hole communicates with the second passage. Thus, the columnar throttle valve can control whether or not fluid flows through the first or second passage, and it can reduce the inconvenience of designing multiple valves to control multiple passages. Furthermore, the first driver can provide power and transmit it to the throttle valve via the first connector, and can also control the throttle valve to switch between a first state and a second state.

[0014] In the medical device according to the present invention, it is preferable that the first through-hole has a first axis, the second through-hole has a second axis, and the first axis and the second axis are perpendicular to each other. In this case, by rotating a columnar throttle valve, for example by rotating it 90° clockwise or counterclockwise, it is possible to connect the first through-hole and the first passage and not connect the second through-hole and the second passage, or to not connect the first through-hole and the first passage and connect the second through-hole and the second passage, thereby achieving the effect of simultaneously controlling the opening and closing of two passages with a single power source.

[0015] In the medical device according to the present invention, it is preferable that one side of the liquid reservoir is open and sealed by a first piston, and the other side of the liquid reservoir is in communication with the first passage. In this case, when fluid is contained in the liquid reservoir, the piston can push the fluid out of the first passage to maintain a predetermined pressure, and contamination of the fluid in the reservoir due to backflow of fluid or blood can be prevented.

[0016] In the medical device according to the present invention, it is preferable that the first piston is connected to an elastic member, and that the elastic member is held in a compressed state. In this case, the elastic member held in a compressed state can displace the first piston to maintain the fluid contained in the reservoir at a predetermined pressure, thereby preventing contamination of the fluid in the reservoir due to backflow of the fluid or blood.

[0017] In the medical device according to the present invention, the second drive mechanism includes a second driver and a second connector driven by the second driver and connected to the flow supply, wherein the second driver drives the second connector to change the volume of the flow supply to maintain the first volume, causing fluid to flow from the reservoir to the flow supply via the first passage, and the second driver drives the second connector to change the volume of the flow supply to maintain the second volume, causing fluid to flow from the flow supply to the body via the second passage. In this case, by transmitting power supplied from the second driver to the flow supply via the second connector to change the volume of the flow supply, a predetermined volume of fluid can be obtained from the reservoir and injected into the body by combining the first drive mechanism and the throttle valve.

[0018] In the medical device according to the present invention, it is preferable that one side of the flow supply is open and sealed by a second piston, and the other side of the flow supply is in communication with the second passage. In this case, the flow supply can change its volume by the displacement of the second piston, and when it is at the first volume, it can be made into a negative pressure to obtain a predetermined volume of fluid, and when it is at the second volume, it can be returned to positive pressure and injected into the body through the second passage.

[0019] In the medical device according to the present invention, it is preferable that the second piston is connected to the second connector and driven by the second driver. In this case, the power supplied from the second driver is transmitted to the second piston via the second connector, so that the volume of the flow supply device can be changed by the displacement of the second piston.

[0020] In the medical device according to the present invention, the first driver or the second driver is preferably one of a shape memory alloy, a piezoelectric motor, or a servo motor, the first connector is preferably one of a torsion spring or a gear, and the second connector is preferably one of a spring or a connecting rod. In this case, the first connector and the throttle valve can be driven by obtaining power from the deformation of the shape memory alloy by energizing the shape memory alloy to heat it to a predetermined range, and when heating is stopped, the restoring force can also drive the first connector and the throttle valve in the reverse direction, which has the advantages of power saving, control accuracy, and rapid response. Driving the first connector and the throttle valve with a piezoelectric motor or a servo motor has the advantages of control accuracy and rapid response. Furthermore, the first connector, which consists of a torsion spring or a gear, can be driven by power to roll and rotate the throttle valve, and further open and close the first passage or the second passage. Furthermore, the second connector, which consists of a spring or a push rod, can be driven by power to reciprocate displacement of the second piston, and further change the volume of the flow supply.

[0021] A second aspect of the present invention provides a medical system including a medical device described in any of the first aspects of the present invention.

[0022] According to the medical system according to the second aspect of the present invention, it further includes an external controller for controlling the medical device and a sensor monitor communicably connected to the external controller. The sensor monitor acquires data of the physiological parameters of the user and transmits the data of the physiological parameters of the user to the external controller. The external controller preferably controls the medical device to transport fluid based on the data of the physiological parameters of the user. In this case, the medical system can accurately provide infusion treatment to the patient, the infusion can be controlled by the external controller, the physiological parameters of the patient can be monitored by the sensor monitor, and the medical system can provide infusion treatment to the patient more accurately and automatically.

[0023] According to the present disclosure, a medical device and a medical system for accurately transporting fluid can be provided. Here, the medical device controls the transport fluid in numerical quantities (i.e., a predetermined volume of fluid) and has the characteristic of high fluid transport accuracy compared with the prior art.

Brief Description of the Drawings

[0024] [Figure 1] It is a schematic diagram showing an application scenario of an embodiment of the medical system according to an example of the present disclosure. [Figure 2] It is an overall schematic diagram showing the medical device in the medical system according to the example of FIG. 1 of the present disclosure. [Figure 3] It is a schematic diagram showing the configuration of the medical device according to an example of the present disclosure. [Figure 4] It is a schematic diagram showing the configuration of the liquid storage container of the medical device according to an example of the present disclosure. [Figure 5a] It is a schematic diagram showing the flow of fluid in the medical device when the throttle valve according to an example of the present disclosure is in the first state and the flow rate supplier is in the first volume. [Figure 5b] It is a schematic diagram showing the flow of fluid in the medical device when the throttle valve according to an example of the present disclosure is in the second state and the flow rate supplier is in the second volume. [Figure 6a]A cross-sectional view showing a throttle valve (in the first state) of a medical device according to an example of the present disclosure when connected to a first passage and a second passage. [Figure 6b] A cross-sectional view showing a throttle valve (in the second state) of a medical device according to an example of the present disclosure when connected to a first passage and a second passage. [Figure 7] A schematic diagram showing the process in which a throttle valve of a medical device according to an example of the present disclosure rotates from the first state to the second state. [Figure 8] A schematic diagram showing the configuration of a flow rate supply device of a medical device according to an example of the present disclosure. [Figure 9] A schematic diagram showing a case where a flow rate supply device of a medical device according to an example of the present disclosure is in a first volume. [Figure 10] A schematic diagram showing a case where a flow rate supply device of a medical device according to an example of the present disclosure is in a second volume. [Figure 11] A flowchart showing a control method of a medical device according to an example of the present disclosure.

Mode for Carrying Out the Invention

[0025] Hereinafter, referring to the drawings in the embodiments of the present disclosure, the invention according to the embodiments of the present disclosure will be clearly and comprehensively described. Of course, the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in the present disclosure, all other embodiments filled by those skilled in the art without creative labor belong to the protection scope of the present disclosure.

[0026] Furthermore, the terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and drawings of this disclosure are intended to distinguish different subjects and not to describe a specific order. Also, the terms "includes" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units not listed, or other steps or units specific to these processes, methods, products, or apparatus. In the following description, the same parts are denoted by the same reference numerals, and redundant descriptions are omitted. Also, the drawings are schematic, and the dimensional ratios between components and the shapes of components may differ from those of actual components.

[0027] This disclosure relates to medical devices and medical systems for transporting fluids. In this disclosure, medical devices for transporting fluids may be referred to simply as medical devices or devices. A patient may be a user of a medical device relating to this disclosure, and this disclosure is not non-restrictive to related nouns such as “user,” “patient,” or “sick person,” meaning that the meanings of the above terms may be equivalent in some cases. Similarly, “fluid transport,” “infusion,” and “fluid injection” are not limited to this disclosure and may be understood to have the same or similar meanings unless specifically limited.

[0028] Furthermore, in this disclosure, the fluid is not particularly limited and may be, for example, a drug solution injected by a medical device or medical system relating to this disclosure. In some examples, such a drug solution may be dopamine, dobutamine, adrenaline, noradrenaline beetartrate, sodium nitroprusside, somatostatin, propofol, insulin, glucagon-like peptide-1, etc. The medical device relating to this disclosure may also be used to administer medication to a patient regularly, continuously, and accurately, depending on the actual circumstances of any disease.

[0029] One aspect of this disclosure relates to an automated medication dispensing medical system, which may include any of the medical devices (described below) relating to the other aspects of this disclosure.

[0030] Figure 1 is a schematic diagram showing an application scene of one embodiment of the medical system 1 according to the example of this disclosure.

[0031] As shown in Figure 1, in some examples, the automated medication dispensing medical system 1 may include any medical device 10 (described later) relating to other aspects of this disclosure. In some examples, the medical system 1 may include devices such as the medical device 10, an external controller 20, and a sensor monitor 30. Hereinafter, the automated medication dispensing medical system 1 may be simply referred to as medical system 1 or system 1. In some examples, the medical device can act on user 2 and provide user 2 with quantitatively controlled and highly controlled fluid therapy.

[0032] In some examples, the external controller 20 may be a dedicated controller, a mobile phone, a personal computer, or other terminal equipment. In other examples, the external controller 20 may be a cloud device or an internet device. For example, a server or control terminal of an internet hospital may both be considered the external controller 20.

[0033] In some examples, the sensor monitor 30 may be, but is not limited to, a device for monitoring the user's physiological parameters such as blood oxygen saturation, pulse rate, body temperature, height / weight, body composition, blood lipids, blood glucose, and blood pressure.

[0034] In some examples, the sensor monitor 30 may be wirelessly connected to an external controller 20 for communication. In some examples, the wireless communication method may include, but is not limited to, at least one of Bluetooth®, Wi-Fi, 3G / 4G / 5G, NFC, UWB, and ZigBee.

[0035] In some examples, the external controller 20 may be wirelessly connected to the medical device 10. In some examples, the wireless communication method may include, but is not limited to, at least one of Bluetooth®, Wi-Fi, 3G / 4G / 5G, NFC, UWB, and ZigBee. In other examples, the external controller 20 may not be provided, and the medical device 10 may have an internal controller or control chip (not shown), which may be wirelessly connected to the sensor monitor 30. In this case, the medical device 10 can respond directly to the monitoring data from the sensor monitor 30 and automatically provide the patient with fluid therapy in a timely manner, improving the convenience and speed of treatment.

[0036] In some examples, the sensor monitor 30 can acquire data on the user's physiological parameters and transmit the data to an external controller 20, which can then control the medical device 10 to transport fluid based on the user's physiological parameter data.

[0037] In some examples, such as the treatment of diabetes, the sensor monitor 30 may be a blood glucose meter. The physiological parameter data of user 2 may be blood glucose data. The operation flow of the medical system 1 may include acquiring real-time blood glucose data from user 2's blood glucose meter (i.e., the sensor monitor 30) and transmitting it to an external controller 20, the external controller 20 transmitting a control signal to the medical device 10 based on the blood glucose data, and the medical device 10 injecting fluid into user 2's body based on the control signal.

[0038] Therefore, according to this disclosure, a medical system for transporting drug solutions with high precision can be provided.

[0039] Another aspect of this disclosure relates to medical devices for the high-precision transport of drug solutions. In some examples, such medical devices may be used in conjunction with other devices or equipment to constitute any of the medical systems described in this disclosure, i.e., the medical devices relating to this disclosure may be one of the components of any of the medical systems described in this disclosure.

[0040] Figure 2 is an overall schematic diagram showing a medical device 10 in the medical system 1 according to the example in Figure 1 of this disclosure. Figure 3 is a schematic diagram showing the configuration of the medical device 10 according to the example in this disclosure.

[0041] As shown in Figure 3, the medical device 10 according to this disclosure may include a liquid reservoir 11, a first passage 12, a flow supply device 13, a drive mechanism 15, a second passage 14, and a throttle valve 16.

[0042] In some examples, the reservoir 11 may be for storing fluid, the first passage 12 may be in communication with the reservoir 11, the flow supply 13 may be for receiving fluid from the reservoir 11 via the first passage 12 and supplying fluid, the drive mechanism 15 may be for controlling changes in the volume of the flow supply 13, the second passage 14 may be in communication with the flow supply 13 and receive fluid from the flow supply 13 for percutaneous connection into the body, and the throttle valve 16 may be for controlling the opening and closing of the first passage 12 and the second passage 14 in conjunction with the drive mechanism 15.

[0043] In some examples, the throttle valve 16 may have a first state and a second state, and when the throttle valve 16 is in the first state, the drive mechanism 15 may hold the flow supply 13 at a first volume and the flow supply 13 may receive a predetermined volume of fluid from the reservoir 11 through the first passage 12, and when the throttle valve 16 is in the second state, the drive mechanism 15 may hold the flow supply 13 at a second volume and the flow supply 13 may supply a predetermined volume of fluid through the second passage 14, the second volume may be smaller than the first volume and the predetermined volume may be determined by the volume difference between the first volume and the second volume.

[0044] In such cases, by storing the fluid in the fluid reservoir 11 of the medical device 10, it is possible to facilitate timely treatment for the patient by allowing them to carry a predetermined amount of fluid and inject it when needed. Through the cooperation between the flow supply 13, the drive mechanism 15, and the throttle valve 16, a predetermined volume of fluid is obtained from the fluid reservoir 11 via the first passage 12, i.e., the difference between the first and second volumes of the flow supply 13, and the predetermined volume of fluid is injected into the body via the second passage 14. This achieves numerical volume control by allowing the medical device 10 to obtain and inject a predetermined volume (i.e., a unit amount or base amount) of fluid when the patient needs to inject fluid, thereby improving the accuracy of infusion. In some examples, a predetermined volume of fluid may be called a unit volume, base volume, or numerical volume of fluid, and the predetermined volume of fluid may be determined by changing the first or second volume of the flow supply 13 according to the different types of fluids and therapeutic effects. For example, if a specific therapeutic effect needs to be obtained according to the patient's diabetes needs, the amount of insulin obtained each time in a predetermined volume can be set to 0.1 mg (or ml), 0.5 mg (or ml), 1 mg (or ml), etc.

[0045] As shown in Figure 3, in some examples, the medical device 10 may further include a control chip 17 for responding to external control signals from an external controller 20 (see Figure 1), which can control the drive mechanism 15 by transmitting control commands based on the external control signals.

[0046] In some examples, the control chip 17 may include a control module and a communication module. The control module (not shown) can control the drive mechanism 15 by generating control commands based on an external control signal, for example, to start, pause, continue, or terminate the control. The communication module (not shown) is used for communication and data exchange with an external controller 20, for example, to receive an external control signal or to transmit information about the current operating status of the medical device 10.

[0047] In this way, the medical device 10 can inject fluid into the patient's body based on a control signal. Specifically, the medical device 10 generates a control command based on the control signal and controls the drive mechanism 15 to drive the throttle valve 16 and the flow supply device 13, thereby obtaining a predetermined volume of fluid and injecting it into the patient's body. This enables precise control of numerical quantities and improves the accuracy of fluid infusion.

[0048] In some cases, the control chip 17 of the medical device 10 can directly respond to data on physiological parameters of the human body monitored by the sensor monitor 30 (see Figure 1) and control the fluid to be injected into the patient's body based on the data. In this case, compared to the above process of controlling the infusion in response to an external control signal from an external controller 20, the response time can be reduced, and patient treatment can be supported more quickly.

[0049] As shown in Figure 3, in some examples, the medical device 10 may further include a battery module 18. The battery module 18 can supply power to the drive mechanism 15 and the control chip 17. In some examples, the battery module 18 may be used to supply power to other modules in the medical device 10 that require electrical energy. In some examples, the battery module 18 may be an energy module with an independent power source, such as a lithium battery or a button cell battery. In other examples, the battery module 18 may be an energy storage module that is charged by an interface such as USB or Type-C.

[0050] As shown in Figure 3, in other examples, the medical device 10 for transporting fluid may include a reservoir 11, a first passage 12, a flow supply 13, a drive mechanism 15, a second passage 14, a throttle valve 16, a guide 19, and a filter 104.

[0051] In some cases, the needle guide 19 may be used to insert the extension of the second passage 14 subcutaneously. This allows the medical device 10 to inject fluid into the body through the second passage 14.

[0052] In some cases, the portion of the needle facilitator 19 inserted subcutaneously may be a needle or a trocar, and the needle facilitator 19 can deliver the extension of the second passage 14 subcutaneously once, withdraw the needle or trocar, and leave the extension of the second passage 14 subcutaneously. This allows the medical device 10 to inject fluid into the body through the second passage 14, reducing the risk of the patient being repeatedly injured by the puncture needle.

[0053] In some examples, the medical device 10 may not include the needle assist device 19. In this case, the medical device 10 can complete the infusion by connecting the second passage 14 to an infusion tube provided on the patient's body, thereby facilitating infusion or use in different settings for patients who have difficulty receiving medication via patch application.

[0054] In some examples, the filter 104 may be provided between the fluid reservoir 11 and the first passage 12. The filter 104 may be configured to filter the fluid before the fluid reservoir 11 supplies it to the first passage 12. In this case, the possibility of the fluid crystallizing and causing clogging (e.g., drugs such as insulin) can be reduced, thereby allowing the fluid to flow smoothly to the flow supply 13 and improving the accuracy of fluid injection into the patient's body. In other examples, the medical device 10 may not have a filter 104; for example, if the fluid is a drug solution that is not easily crystallized, the filter 104 may not be provided.

[0055] In other examples, the medical device 10 for transporting fluid may further include an alarm device (not shown). The alarm device may be configured to detect the condition of the fluid in the reservoir 11. If the fluid level is low, it can emit an alarm signal, such as vibration or sound, to prompt the patient to replenish the fluid.

[0056] Referring to Figure 2 or Figure 3, in some examples, the medical device 10 may include a housing 101. The housing 101 may serve as the housing for the medical device 10, protecting the internal components of the medical device 10. In some examples, the housing 101 may be designed as a flattened, elongated block shape with an arc that can adapt to a skin surface. In some examples, one surface of the housing 101 may be assembled with an adhesive film 40 for attachment to the skin, i.e., the medical device 10 may be adhesive. In this case, the adhesive medical device 10 can be easily carried by the patient and can provide the patient with intravenous therapy quickly if an emergency medical condition occurs.

[0057] In some examples, the housing 101 may be provided with a transparent window 102 that intuitively displays the fluid volume of the liquid reservoir 11 (see Figure 2), allowing the patient to observe and replenish the fluid in a timely manner.

[0058] In other examples, the housing 101 of the medical device 10 may be a non-flat, elongated block shape (for example, a spherical or square block), that is, the housing 101 may be a general block shape, and the medical device 10 may not be assembled with the adhesive film 40. In some examples, a housing that is a general block shape may be provided with a structure or mechanism that makes it easy to hang or carry. In such cases, it is convenient to use the medical device for treatment in the patient's room, or it is convenient for users who have difficulty carrying medication by adhesive application to administer intravenous fluid therapy.

[0059] As described above, the external shape of the housing 101 of the medical device 10 is not limited; in other words, the housing 101 of the medical device 10 may be adhesive or an external non-adhesive device. In other examples, the medical device 10 can be installed as a device that can be implanted subcutaneously or inside the body, and the housing 101 can be manufactured in a specific shape using a material with excellent biocompatibility, such as an implantable town pump or a hepatic vascular implantable drug pump, which are devices that can be adapted to different parts of the human body.

[0060] Figure 4 is a schematic diagram showing the configuration of a liquid reservoir 11 of a medical device 10 according to an example of this disclosure.

[0061] As shown in Figure 4, in some examples, the volume of the reservoir 11 may be variable, and the fluid pressure in the reservoir 11 may be maintained within a predetermined range when fluid is contained in the reservoir 11. The fluid pressure in the reservoir 11 may be greater than the fluid pressure in the flow supply unit 13. In this case, by maintaining the fluid stored in the reservoir 11 within a predetermined pressure range, the fluid can be made to flow more easily to the flow supply unit 13 through the first passage 12, thereby reducing fluid backflow and fluid contamination due to blood entering the medical device 10.

[0062] In some examples, the reservoir 11 may have a sealable refill port 111. In this case, the refill port 111 allows for periodic replenishment of fluid into the reservoir 11, and the sealable refill port 111 can maintain the pressure inside the reservoir 11 and reduce the entry of air or contamination of the reservoir 11 by the external environment when the fluid is replenished. In some examples, the location of the refill port 111 in the reservoir 11 is not limited. In some examples, the refill port 111 can work in cooperation with an external conduit to replenish fluid into the reservoir 11.

[0063] In some examples, one side of the reservoir 11 may be open and sealed by the first piston 112, while the other side of the reservoir 11 may be in communication with the first passage 12. In this case, when fluid is contained in the reservoir 11, the piston can push the fluid out of the first passage 12 to maintain a predetermined pressure, thereby reducing backflow of fluid and contamination of the fluid in the reservoir 11 by blood flowing into the medical device 10.

[0064] In some examples, the first piston 112 may be connected to an elastic member 113, and the elastic member 113 may be held in a compressed state. In this case, the elastic member 113 held in a compressed state displaces the first piston 112 to maintain the fluid contained in the reservoir 11 at a predetermined pressure, thereby reducing contamination of the fluid in the reservoir 11 due to backflow of fluid or blood.

[0065] In other examples, the liquid reservoir 11 may be an expandable container made of an elastic material that can maintain a pressure within a predetermined range when containing fluid. For example, silica gel, rubber, etc. In this case, the above effects can be achieved without providing the first piston 112 and the elastic member 113.

[0066] Thus, the medical device 1 may be equipped with a throttle valve 16. Figure 5a is a cross-sectional view showing the case in which the throttle valve 16 (in the first state) of the medical device 10 according to an example of the present disclosure is connected to the first passage 12 and the second passage 14. Figure 5b is a cross-sectional view showing the case in which the throttle valve 16 (in the second state) of the medical device 10 according to an example of the present disclosure is connected to the first passage 12 and the second passage 14.

[0067] Referring to Figures 5a and 5b, in some examples, when the throttle valve 16 is in a first state, the throttle valve 16 can open the first passage 12 and close the second passage 14, and when the throttle valve 16 is in a second state, the throttle valve 16 can close the first passage 12 and open the second passage 14. In this case, when the first passage 12 is open and the second passage 14 is closed, the flow supply 13 communicating with the first passage 12 can be driven by the drive mechanism 15 to change its volume to a first volume, and furthermore, the flow supply 13 can create a negative pressure and obtain fluid from the reservoir 11 communicating with the first passage 12 via the first passage 12, and when the first passage 12 is closed and the second passage 14 is opened, the flow supply 13 communicating with the second passage 14 can return to its original volume, the second volume, and inject fluid into the body via the second passage 14.

[0068] Figure 6a is a schematic diagram showing the fluid flow inside the medical device 10 when the throttle valve 16 according to an example of the present disclosure is in a first state and the flow supply device 13 is at a first volume, and Figure 6b is a schematic diagram showing the fluid flow inside the medical device 10 when the throttle valve 16 according to an example of the present disclosure is in a second state and the flow supply device 13 is at a second volume.

[0069] As shown in Figures 6a and 6b, in some examples the throttle valve 16 may include a first valve 161 that controls the opening and closing of a first passage 12 and a second valve 162 that controls the opening and closing of a second passage 14, such that when the first valve 161 closes the first passage 12, the second valve 162 opens the second passage 14, and when the first valve 161 opens the first passage 12, the second valve 162 closes the second passage 14. In this case, when the first valve 161 opens the first passage 12 and the second valve 162 closes the second passage 14, the flow supply 13 communicating with the first passage 12 is driven by the drive mechanism 15 to change its volume to the first volume, and furthermore, the flow supply 13 can create negative pressure and acquire fluid from the reservoir 11 communicating with the first passage 12 via the first passage 12. When the first valve 161 closes the first passage 12 and the second valve 162 opens the second passage 14, the flow supply 13 communicating with the second passage 14 returns to its original volume, the second volume, and can inject fluid into the body via the second passage 14. Thus, through the continuous conversion between the first and second volumes, the flow supply 13 can continuously acquire and inject a predetermined volume (i.e., a unit amount or base amount) of fluid into the body.

[0070] In some examples, the first valve 161 and the second valve 162 may be provided as one of the following types: shut-off type, cock type (or spherical type), shutter type, rotary type, butterfly type, or slide valve type.

[0071] In some examples, the first valve 161 and the second valve 162 may be controlled simultaneously, i.e., driven by the same power source (e.g., the first drive mechanism 151 below). In this case, by simultaneously controlling the opening of the first valve 161 and the closing of the second valve 162, or the closing of the first valve 161 and the opening of the second valve 162, the flow supply 13 can acquire a predetermined volume of fluid, thereby improving the accuracy of the flow supply 13 in acquiring a predetermined volume of fluid.

[0072] In other examples, the first valve 161 and the second valve 162 may be controlled independently, that is, driven by different power sources. In this case, the first valve 161 and the second valve 162 controlled independently can also achieve the above effects, that is, by controlling the opening of the first valve 161 and the closing of the second valve 162, or the closing of the first valve 161 and the opening of the second valve 162, the flow supplyer 13 can acquire a predetermined volume of fluid, and by combining mathematical calculations to calculate the delay in the flow of fluid, the accuracy of the flow supplyer 13 acquiring a predetermined volume of fluid can also be improved.

[0073] Figure 7 is a schematic diagram showing the process by which the throttle valve 16 of the medical device 10 according to an example of this disclosure rotates from a first state to a second state.

[0074] As described above, in some examples, the medical device 10 may include a drive mechanism 15 (described later), and the drive mechanism 15 may include a first drive mechanism 151 (see Figures 5a and 5b).

[0075] In some examples, the throttle valve 16 may be rotatably covered within the sealing material body 103 and may have an extended portion (not shown) which may be connected to and driven by the first drive mechanism 151 (see Figures 5a and 5b). The sealing material body 103 and the first passage 12 and second passage 14 can form a liquid flow path (see Figures 5a and 5b).

[0076] In an exemplary embodiment of the present disclosure, the materials of the sealing body 103, the first passage 12, and the second passage 14 may all be made of the same material, for example, silica gel, or they may be attached in different ways, or made of different materials. For example, the portion of the second passage 14 that is implanted in the patient's body may be made of a material with excellent biocompatibility, such as polypropylene, siloxane, polyurethane, acrylic acid derivatives, polyhydroxy acids, etc.

[0077] As shown in Figures 5a, 5b and 7, in some examples the throttle valve 16 may be columnar. In some examples the throttle valve 16 may have a first through hole 163 and a second through hole 164 (see Figure 7). In some examples the throttle valve 16 may be columnar and have a first through hole 163 and a second through hole 164.

[0078] As shown in Figures 5a and 5b, in some examples, the first drive mechanism 151 may include a first driver 1511 and a first connector 1512 driven by the first driver 1511 and connected to the throttle valve 16. When the first driver 1511 drives the first connector 1512 to rotate the throttle valve 16 to a first state, the first through hole 163 communicates with the first passage 12 and the second through hole 164 does not communicate with the second passage 14. When the first driver 1511 drives the first connector 1512 to rotate the throttle valve 16 to a second state, the first through hole 163 does not communicate with the first passage 12 and the second through hole 164 communicates with the second passage 14.

[0079] In this case, when driven by the first drive mechanism 151, the columnar throttle valve 16 can be configured such that the first through-hole 163 communicates with the first passage 12 and the second through-hole 164 does not communicate with the second passage 14, or the first through-hole 163 does not communicate with the first passage 12 and the second through-hole 164 communicates with the second passage 14. In this way, the columnar throttle valve 16 can control whether or not fluid flows through the first passage 12 or the second passage 14, and the inconvenience of designing multiple valves to control multiple passages can be reduced. Furthermore, the first driver 1511 can provide power and transmit it to the throttle valve 16 via the first connector 1512, and control the throttle valve 16 to switch between a first state and a second state.

[0080] As shown in Figure 7, in some examples, the first through-hole 163 may have a first axis, the second through-hole 164 may have a second axis, and the first and second axes may be orthogonal. In this case, by rotating the columnar throttle valve 16, for example by 90° clockwise or counterclockwise, the first through-hole 163 can be connected to the first passage 12 and the second through-hole 164 cannot be connected to the second passage 14, or the first through-hole 163 cannot be connected to the first passage 12 and the second through-hole 164 can be connected to the second passage 14. This has the effect of being able to control the opening and closing of two passages simultaneously with a single power source.

[0081] In some examples, the first axis and the second axis may intersect spatially but not parallel. In this case, when the throttle valve 16 rotates to a predetermined angle, the first through-hole 163 having the first axis and the second through-hole 164 having the second axis can either connect the first through-hole 163 to the first passage 12 and not the second through-hole 164 to the second passage 14, or the first through-hole 163 cannot connect to the first passage 12 and the second through-hole 164 can connect to the second passage 14. That is, the first through-hole 163 and the first passage 12 can be connected and the second through-hole 164 and the second passage 14 cannot be connected, or the first through-hole 163 and the first passage 12 cannot be connected and the second through-hole 164 and the second passage 14 can be connected, and it is sufficient to satisfy two conditions.

[0082] In some examples, the rotation of the throttle valve 16 may be unidirectional or reciprocating. Preferably, embodiments of the present disclosure employ a reciprocating rotation method.

[0083] Figure 8 is a schematic diagram showing the configuration of the flow supply unit 13 of the medical device 10 according to the example of this disclosure, Figure 9 is a schematic diagram showing the case where the flow supply unit 13 of the medical device 10 according to the example of this disclosure is in a first volume, and Figure 10 is a schematic diagram showing the case where the flow supply unit 13 of the medical device 10 according to the example of this disclosure is in a second volume.

[0084] As described above, in some examples, the throttle valve 16 may have a first state and a second state. When the throttle valve 16 is in the first state, the drive mechanism 15 may hold the flow supply 13 at a first volume (see Figure 9), and the flow supply 13 may receive a predetermined volume of fluid from the reservoir 11 through the first passage 12. When the throttle valve 16 is in the second state, the drive mechanism 15 may hold the flow supply 13 at a second volume (see Figure 10), and the flow supply 13 may supply a predetermined volume ΔV of fluid through the second passage 14. The second volume may be smaller than the first volume, and the predetermined volume ΔV may be equal to the first volume minus the second volume (see Figure 8).

[0085] As shown in Figures 8, 9, and 10, in some examples, one side of the flow supply 13 may be open and sealed by the second piston 131, and the other side of the flow supply 13 may be in communication with the second passage 14. In this case, the flow supply 13 can change its volume by the displacement of the second piston 131, and at the first volume it can be made negative pressure to obtain a predetermined volume of fluid, and at the second volume it can be returned to positive pressure and injected into the body through the second passage 14.

[0086] In some examples, the drive mechanism 15 may include a second drive mechanism 152, and the second piston 131 may be connected to a second connector 1522 and driven by a second driver 1521. In this case, power from the second driver 1521 is transmitted to the second piston 131 via the second connector 1522, so that the displacement of the second piston 131 can change the volume of the flow supply 13.

[0087] As shown in Figure 8, in some examples, the flow supply 13 may be provided with multiple position-regulating protrusions 132 to ensure the accuracy of the volume change of the flow supply 13. In this case, when the second piston 131 reciprocates within the flow supply 13 and changes the volume of the flow supply 13, the position-regulating protrusions 132 can regulate the position of the second piston 131, thereby improving the accuracy of the volume change of the flow supply 13.

[0088] In other examples, the flow supply 13 may be an expandable container made of an elastic material, which can be stretched to a predetermined extent to create negative pressure when it is necessary to fill it with fluid, and returned to its original position to discharge the fluid when it is necessary to discharge it. In this case, the installation of the second piston 131 and the second connector 1522 can be reduced.

[0089] As with the drive mechanism 15 described above, in some examples the drive mechanism 15 may include the first drive mechanism 151 described above and the second drive mechanism 152 described above. In some examples the first drive mechanism 151 can control the throttle valve 16 to open or close the first passage 12 or the second passage 14 (see Figures 5a and 5b, or Figures 6a and 6b), and the second drive mechanism 152 can control the volume change of the flow supply 13 to switch the volume of the flow supply 13 between the first volume and the second volume (see Figures 9 and 10).

[0090] In this case, through the cooperation of the first drive mechanism 151 and the second drive mechanism 152, the first drive mechanism 151 drives the throttle valve 16 to a first state, that is, when the first valve 161 opens the first passage 12 and the second valve 162 closes the second passage 14, the second drive mechanism 152 can control the volume of the flow supply device 13 to maintain a first volume, thereby allowing the flow supply device 13 to form a negative pressure and acquire fluid from the reservoir 11 through the first passage 12. When the fluid fills the first volume and the first drive mechanism 151 drives the throttle valve 16 to a second state, that is, when the first valve 161 closes the first passage 12 and the second valve 162 opens the second passage 14, the second drive mechanism 152 can control the volume of the flow supply device 13 to maintain a second volume, thereby allowing the flow supply device 13 to inject a predetermined volume of fluid into the body.

[0091] In some cases, the first drive mechanism 151 and the second drive mechanism 152 may be controlled simultaneously. That is, when the first drive mechanism 151 controls the throttle valve 16 to open or close the first passage 12 or the second passage 14, the second drive mechanism 152 simultaneously controls the volume change of the flow supply 13 to switch its volume between the first and second volumes. In this case, simultaneous control reduces the time it takes to inject the fluid into the body and reduces the number of time-series inputs of control commands, thereby simplifying the control program of the control chip 17 and allowing for earlier treatment of the patient.

[0092] In some examples, the first drive mechanism 151 and the second drive mechanism 152 may be delayed control, that is, when the first drive mechanism 151 controls the throttle valve 16 to open or close the first passage 12 or the second passage 14, the second drive mechanism 152 controls the volume change of the flow supplyer 13 in accordance with the control of the throttle valve 16 by the first drive mechanism 151, so that the volume of the flow supplyer 13 switches between the first volume and the second volume. In this case, delay control can improve the accuracy of the control and reduce the likelihood of errors in control timing resulting in poor therapeutic effect.

[0093] As shown in Figure 5a or Figure 6a, in some examples, when the first drive mechanism 151 puts the throttle valve 16 to a first state, the throttle valve 16 opens the first passage 12 and closes the second passage 14, and the second drive mechanism 152 controls the flow supply 13 to hold a first volume and receive a predetermined volume of fluid from the reservoir 11 through the first passage 12. As shown in Figure 5b or Figure 6b, in some examples, when the first drive mechanism 151 puts the throttle valve 16 to a second state, the throttle valve 16 closes the first passage 12 and opens the second passage 14, and the second drive mechanism 152 controls the flow supply 13 to hold a second volume and can supply a predetermined volume of fluid through the second passage 14. In this case, the first drive mechanism 151 controls the throttle valve 16 to switch between a first state and a second state, and the second drive mechanism 152 cooperates to control the flow supply device 13 to switch between a first volume and a second volume. This allows a predetermined volume of fluid to be continuously acquired and injected into the body, achieving quantitative or numerical volume control and improving the accuracy of fluid infusion control.

[0094] As shown in Figure 5a or Figure 5b, in some examples the second drive mechanism 152 may include a second driver 1521 and a second connector 1522 that is driven by the second driver 1521 and connected to the flow supply 13.

[0095] In some cases, when the second driver 1521 drives the second connector 1522 to change the volume of the flow supply unit 13 and maintain a first volume, fluid flows from the reservoir 11 to the flow supply unit 13 via the first passage 12. When the second driver 1521 drives the second connector 1522 to change the volume of the flow supply unit 13 and maintain a second volume, fluid flows from the flow supply unit 13 into the body via the second passage 14. In this case, power from the second drive unit 1521 is transmitted to the flow supply unit 13 via the second connector 1522, and by changing the volume of the flow supply unit 13, the first drive mechanism 151 and the throttle valve 16 can be combined to obtain a predetermined volume of fluid from the reservoir 11 and inject it into the body.

[0096] In some examples, the first driver 1511 or the second driver 1521 may be a shape memory alloy, a piezoelectric motor, or a servo motor. The first connector 1512 may be a torsion spring or a gear. The second connector 1522 may be a spring or a connecting rod. In this case, the first connector 1512 and the throttle valve 16 can be driven by obtaining power from the deformation of the shape memory alloy by energizing the shape memory alloy to heat it to a predetermined range, and when heating is stopped, the first connector 1512 and the throttle valve 16 can also be driven in the reverse direction by utilizing the power from the shape memory alloy's shape recovery, which has the advantages of power saving, control accuracy, and rapid response. Driving the first connector 1512 and the throttle valve 16 with a piezoelectric motor or a servo motor has the advantages of control accuracy and rapid response. Furthermore, the first connector 1512, consisting of a torsion spring or gear, is driven by power to roll and rotate the throttle valve 16, and also to open and close the first passage 12 or the second passage 14. In addition, the second connector 1522, consisting of a spring or push rod, is driven by power to reciprocate and displace the second piston 131, and can also change the volume of the flow supply unit 13.

[0097] To better achieve the functional effects of the medical device 10 relating to this disclosure, this disclosure may provide a control method for the medical device 10 for transporting fluids. Hereinafter, this may be simply referred to as the control method or the method.

[0098] Figure 11 is a flowchart showing a control method for a medical device 10 according to an example of this disclosure.

[0099] In some examples, the control method may include the following steps, as shown in Figure 11.

[0100] Step S01: The control chip 17 responds to the external control signal.

[0101] Step S02: A control command is generated based on the control signal, and the control command may include an assisted needle command to control the assisted needle 19 to insert the second passage 14 subcutaneously before transporting the fluid, and an infusion command to control the drive mechanism 15.

[0102] Step S03: Based on the assisted needle command, the assisted needle device 19 is controlled to insert the second passage 14 subcutaneously.

[0103] Step S04: Based on the infusion command, the first drive mechanism 151 is controlled to output power to set the throttle valve 16 to the first state, that is, to open the first passage 12 and close the second passage 14.

[0104] Step S05: Based on the infusion command, the second drive mechanism 152 is controlled to output power so that the flow supply 13 maintains the first volume.

[0105] Step S06: When the flow supply 13 is filled with a predetermined volume of fluid, the first drive mechanism 151 is controlled to output power based on the infusion command to set the throttle valve 16 to the second state, that is, closing the first passage 12 and opening the second passage 14.

[0106] Step S07: Based on the infusion command, the second drive mechanism 152 is controlled to output power so that the flow supply 13 maintains a second volume, thereby injecting a predetermined volume of fluid into the body through the second passage 14, where the second volume is smaller than the first volume, and the predetermined volume is equal to the first volume minus the second volume.

[0107] Step S08: By repeating steps S04-S07 based on the infusion command, a fixed amount of medication can be continuously supplied to the patient according to their required amount, thereby improving the therapeutic effect.

[0108] In some examples, steps S04 and S05 may be performed simultaneously, and steps S06 and S07 may be performed simultaneously.

[0109] In some examples, in step S04, the first drive mechanism 151 may output power in the reverse direction so that the throttle valve 16 enters a second state, that is, so that the first passage 12 closes and the second passage 14 opens. In other words, the first drive mechanism 151 may drive the throttle valve 16 to reciprocate so that it switches the first passage 12 between open and closed and the second passage 14 between closed and open, that is, after step S04 is completed, step S06 may be completed by reciprocating motion.

[0110] In some examples, in step S05, the second drive mechanism 152 may output power in the reverse direction so that the flow supply 13 holds the second volume. In other words, the second drive mechanism 152 may drive the second piston 131 to reciprocate in order to switch the volume of the flow supply 13 between the first volume and the second volume, that is, after step S05 is completed, step S07 may be completed by the reciprocating motion.

[0111] In other aspects of this disclosure, a medical device 10 for transporting fluids with high precision can be provided. Here, the medical device controls the transported fluid using a numerical quantity (i.e., a predetermined volume of fluid) and has the advantage of higher fluid transport precision compared to the prior art.

[0112] According to this disclosure, it is possible to provide medical devices and medical systems for transporting fluids with high precision.

[0113] The above description has been made with reference to the drawings and examples, but it should be understood that the above description is not intended to limit the disclosure in any way. A person skilled in the art may modify and change the disclosure as necessary without departing from the spirit and scope of the disclosure, and any such modifications and changes will be within the scope of the disclosure. [Explanation of symbols]

[0114] 1...Medical system, 2...User, 10...Medical device, 20...External controller, 30...Sensor monitor, 40...Adhesive film, 11...Liquid reservoir, 12...First passage, 13...Flow supply unit, 14...Second passage, 15...Drive mechanism, 16...Throttle valve, 17...Control chip, 18...Battery module, 19...Needle assist device, 101...Housing, 102...Transparent window, 103...Sealing material body, 104...Fill T, 111... Refill port, 161... First valve, 162... Second valve, 163... First through hole, 164... Second through hole, 151... First drive mechanism, 152... Second drive mechanism, 1511... First driver, 1512... First connector, 1521... Second driver, 1522... Second connector, 112... First piston, 113... Elastic member, 131... Second piston, 132... Position regulating projection.

Claims

1. Infusion device, A liquid reservoir for containing fluid, A first passage communicating with the aforementioned liquid storage device, A flow supply device for receiving fluid from the liquid reservoir through the first passage and supplying the fluid, A second passage that communicates with the flow supply device and receives fluid from the flow supply device, and is connected percutaneously to the body, It comprises a throttle valve for controlling the opening and closing of the first passage and the opening and closing of the second passage, The throttle valve includes a first valve that controls the opening and closing of the first passage and a second valve that controls the opening and closing of the second passage. When the first valve opens the first passage, the flow supply device receives a predetermined volume of fluid from the reservoir through the first passage. Infusion device characterized in that when the second valve opens the second passage, the flow supplyer supplies the predetermined volume of fluid through the second passage.

2. When the first valve closes the first passage, the second valve opens the second passage. The infusion device according to claim 1, wherein when the first valve opens the first passage, the second valve closes the second passage.

3. The throttle valve has a columnar shape and is rotatably covered within the sealing material body. The infusion device according to claim 1, wherein the rotation of the throttle valve is unidirectional or reciprocating.

4. The throttle valve has a first state and a second state. When the throttle valve is in the first state, the flow supply device maintains the first volume. When the throttle valve is in the second state, the flow supply device maintains the second volume. The infusion device according to claim 1, wherein the second volume is smaller than the first volume, and the predetermined volume is determined by the volume difference between the first volume and the second volume.

5. The system further includes a drive mechanism for controlling the change in volume of the flow supply device, When the throttle valve is in the first state, the drive mechanism holds the flow supply in the first volume. The infusion apparatus according to claim 4, wherein when the throttle valve is in the second state, the drive mechanism holds the flow supplyer to the second volume.

6. The drive mechanism is linked to the throttle valve, The infusion apparatus according to claim 5, wherein the drive mechanism includes a first drive mechanism and a second drive mechanism, the first drive mechanism controls the throttle valve to open and close the first passage or the second passage, and the second drive mechanism controls the change in the volume of the flow supply so that the volume of the flow supply is switched between the first volume and the second volume.

7. When the first drive mechanism sets the throttle valve to the first state, the throttle valve opens the first passage and closes the second passage, the second drive mechanism controls the flow supply to maintain the first volume, and receives the predetermined volume of fluid from the reservoir through the first passage. The infusion device according to claim 6, wherein when the first drive mechanism moves the throttle valve to the second state, the throttle valve closes the first passage and opens the second passage, and the second drive mechanism controls the flow supply to maintain the flow supply in the second volume and supplies the predetermined volume of fluid through the second passage.

8. The throttle valve has a columnar shape and has a first through hole and a second through hole, and the first drive mechanism includes a first driver and a first connector that is driven by the first driver and connected to the throttle valve. When the first driver drives the first connector to rotate the throttle valve to the first state, the first through-hole communicates with the first passage, and the second through-hole does not communicate with the second passage. The infusion device according to claim 6, wherein when the first driver drives the first connector to rotate the throttle valve to the second state, the first through-hole does not communicate with the first passage and the second through-hole communicates with the second passage.

9. The infusion device according to claim 8, wherein the first driver is one of a shape memory alloy, a piezoelectric motor, and a servo motor, and the first connector is one of a torsion spring and a gear.

10. The infusion device according to claim 8, wherein the first through-hole has a first axis, the second through-hole has a second axis, and the first axis and the second axis are perpendicular to each other.

11. The infusion apparatus according to claim 6, wherein the second drive mechanism includes a second driver and a second connector driven by the second driver and connected to the flow supply, the second driver drives the second connector to change the volume of the flow supply to maintain the first volume, causing fluid to flow from the reservoir through the first passage to the flow supply, and the second driver drives the second connector to change the volume of the flow supply to maintain the second volume, causing fluid to flow from the flow supply through the second passage into the body.

12. The infusion device according to claim 11, wherein the second driver is one of a shape memory alloy, a piezoelectric motor, and a servo motor, and the second connector is one of a spring and a connecting rod.

13. One side of the flow supply device is open and sealed by the second piston, and the other side of the flow supply device is in communication with the second passage. The infusion apparatus according to claim 11, wherein the second piston is connected to the second connector and driven by the second driver.

14. The infusion device according to claim 1, wherein the flow rate supply is an expandable container made of an elastic material.

15. A medical system characterized by including an infusion device according to any one of claims 1 to 14.

16. The system further comprises an external controller for controlling the infusion device and a sensor monitor that is communicably connected to the external controller. The medical system according to claim 15, wherein the sensor monitor acquires data of the user's physiological parameters, transmits the data of the user's physiological parameters to the external controller, and the external controller controls the infusion device to transport fluid based on the data of the user's physiological parameters.

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