KR101824979B1 - APPARATUS AND METHOD managing infusion pump - Google Patents

Abstract

The fluid control device for preventing the backflow of the fluid has a tubular shape. The silicone tubing has elasticity to allow the fluid to pass through the space formed inside the tube. The fluid control device is located at both ends of the silicone tube. The plurality of check valves includes a first check valve formed at one end of the silicone tube and a second check valve formed at the other end of the silicone tube.

Description

[0001] APPARATUS AND METHOD [0002]

And more particularly, to a device and a method for controlling the amount of fluid that prevents backflow of fluid.

Generally, the device for regulating the rate of administration is a device for controlling the amount of droplet by using a regulator connected to a fluid bag, an infusion pump for infusing the fluid bag at a constant speed and injecting the medicine, And a syringe pump that pressurizes the drug at a constant rate.

The fluid device is used for administering fluid and medicine to the general patient in the ward and is used for one time and is easy to handle. However, since the dose of the medicine depends on gravity only, it is difficult to control the injection amount according to the difference in height, May cause medical problems due to backflow of the fluid. In addition, although the liquid device for controlling the flow of the liquid while directly observing the liquid droplet is a consumable product, the speed displayed on the surface of the regulator is different from the actual injection speed, There are restrictions.

The Infusion Pump is a device that injects the liquid constantly by attaching the tube to the existing fluid set and applying pressure to the tube, and it is possible to dispense the fluid more precisely than the infusion device. Infusion pumps are a non-consumable, non-consumable, bulky, bulky, and electrically powered equipment that is difficult to migrate and manage. On the other hand, the syringe pump is used when injecting a certain amount of medicine with a syringe rather than a sap bag, and can be used when a medicine is precisely administered.

However, medication errors can occur during the infusion of fluid, and medication errors that occur during the preparation of fluid are generally related to errors in the infusion rate or to the calculation of incorrect fluid volume. In order to avoid such errors, a stable and constant level of fluid and drug administration should be achieved by using a fluid regulator as a method for supplying a proper amount of fluid. Accordingly, there is an increasing demand for a fluid infusion device that overcomes the problems of existing devices.

The background technology of the present application is disclosed in Korean Patent Laid-Open Publication No. 2009-0085040.

The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide an infusion pump system capable of improving basic errors such as fluid flow rate and capacity by minimizing a change in fluid velocity due to the influence of gravity, And it is intended to increase the convenience of use by miniaturization. In addition, it is intended to provide a better medical environment to the patient side, and to provide a device capable of increasing the efficiency of work in terms of physicians and the like.

It should be understood, however, that the technical scope of the embodiments of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to an aspect of the present invention, there is provided a fluid control device for preventing reverse flow of a fluid, the fluid control device having a tube shape and having elasticity for passing a fluid through a space formed inside the tube, And a plurality of check valves located at both ends of the silicone tube and configured so that the liquid passing through the inside of the silicone tube does not flow backward. A valve, and a second check valve formed at the other end of the silicone tube.

According to an example of this embodiment, when the pressure in the silicon tube is increased by applying a physical pressure to the silicon tube, the first check valve is opened to allow liquid to enter the silicone tube, and the second check valve is closed So that the liquid inflow into the silicone tube may not be discharged.

According to an example of this embodiment, when the pressure in the silicone tube is lowered by releasing the physical pressure to the silicone tube, the first check valve is closed to prevent inflow of the liquid into the silicone tube, So that the liquid inflow into the silicon tube can be discharged.

In addition, according to one embodiment of the present invention, the apparatus may further include a driving unit that performs an operation of applying or releasing a physical pressure to the silicon tube at predetermined time intervals.

Further, according to an example of this embodiment, the driving unit can apply or release physical pressure to the silicon tube as the motor is cam driven.

Further, according to an example of this embodiment, the apparatus may further include a safety control unit located on at least one check valve and checking a volume variation in the silicon tube.

According to an embodiment of the present invention, the safety control unit applies a time-varying magnetic field to a silicon tube through a coil, applies a time-varying magnetic field to the silicone tube through a coil, The volume variation in the silicon tube can be checked based on the detection signal reflecting the capacitance change.

According to an example of this embodiment, the safety control unit can stop the operation of the driving unit when an abnormality is detected in the volume variation of the silicon tube band.

According to an embodiment of the present invention, the wireless communication unit may further include a wireless communication unit for transmitting the amount of the liquid passing through the silicone tube and information about the liquid to another device located at a remote location.

Further, according to an example of this embodiment, the plurality of check valves may include a valve plate having a thickness of 0.2 mm to 5 mm and a valve plate for controlling the movement of the valve plate so that the sap flows in one direction.

According to an embodiment of the present invention, it is possible to further include a sensor unit for checking an input amount of the inflow liquid into the plurality of check valves.

According to another aspect of the present invention, there is provided a method of preventing reverse flow of a fluid, comprising the steps of: passing a liquid through a space formed inside a silicone tube having a tube shape and having elasticity; So that the liquid passing through the interior of the silicone tube does not flow backward based on the check valve of the silicone tube, wherein the plurality of check valves comprises a first check valve formed at one end of the silicone tube, And may include a second check valve.

The above-described task solution is merely exemplary and should not be construed as limiting the present disclosure. In addition to the exemplary embodiments described above, there may be additional embodiments in the drawings and the detailed description of the invention.

According to the above-described problem solving means, it is possible to improve the basic error such as the fluid flow rate and the capacity by minimizing the change in the fluid velocity due to the effect of gravity that may occur in the existing fluid infusion device environment, It is possible to increase convenience. Further, it is possible to provide a better medical environment to the patient, and to provide a device capable of increasing the efficiency of the work in terms of the physician and the like. It is also applicable to medical technology and industrial technology related to flow control of flow rate.

1 is a schematic view of a liquid-receiving system according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of a fluid control device according to an embodiment of the present invention.
3 is a view showing the operation of one of the check valves according to an embodiment of the present invention.
4 is a view showing an operation of the fluid control device according to an embodiment of the present invention.
FIG. 5 is a flowchart illustrating a method of adjusting a fluid according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.

Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.

It will be appreciated that throughout the specification it will be understood that when a member is located on another member "top", "top", "under", "bottom" But also the case where there is another member between the two members as well as the case where they are in contact with each other.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

1 is a schematic view of a fluid control system according to an embodiment of the present invention. Referring to FIG. 1, the fluid control system may include a fluid control device 100 for preventing backflow of fluid, and other electronic devices (not shown) connected to the fluid control device 100 via a network.

Liquids usually refer to liquids for replenishing water and nutrients into veins. In other words, the artificial solution used for intravenous or subcutaneous injection without going through the mouth can be called as liquid. The liquid used for intravenous administration can generally be divided into a Crystalloid solution and a Colloid solution. A constant solution is a solution of an electrolyte consisting of small molecules that can diffuse freely into the extravascular space, and can usually contain sodium chloride as a basis. These fixed solutions include isotonic saline, physiological saline, Ringer's solution, Lactated Ringer's solution, Balanced electrolyte Ringer's solution, constant solution with normal pH similar to pH 7.4 and glucose solution.

The colloid solution has a larger and non-diffusible solute than the fixed solution, and it can not move freely through the wall of the vessel, unlike the fixed solution, so that the blood volume can be increased by retaining moisture in the blood vessel. The colloid solution includes albumin solution and dextran agent.

Other electronic devices (not shown) that are networked with the fluid-dispensing device 100 may be, for example, a smartphone, a tablet personal computer, a mobile phone, a videophone, A laptop computer, a netbook computer, a workstation, a server, a personal digital assistant (PDA), a portable multimedia player (PMP) , MP3 players, mobile medical devices, cameras, or wearable devices such as smart glasses, headmounted-devices (HMD), electronic apparel, electronic bracelets, electronic necklaces, ), An electronic tattoo, a smart mirror, or a smart watch).

Other electronic devices (not shown) may be externally located devices or servers interconnected via the network with the fluid control device 100. On the other hand, other electronic devices (not shown) can receive information such as the remaining amount of the fluid, the infusion rate of the fluid, and the infusion completion time of the fluid from the fluid control device 100. In addition, the infusion rate of the inflow liquid through the fluid control device 100 may be provided through other electronic devices (not shown). This allows the needles to be quickly removed from the patient immediately after the infusion of infusions is complete and prevents the wasted manpower or residual fluid from being discarded to control the infusion rate of infusions or to check the remaining amount of infusions. However, the embodiments described above are merely examples for facilitating understanding of the present invention, and thus the present invention is not limited thereto.

The network refers to a connection structure in which information can be exchanged between each node such as terminals and servers, and may include wireless communication and wired communication. The wireless communication may use, for example, at least one of LTE, LTE-A, CDMA, WCDMA, UMTS, WiBro, or GSM as the cellular communication protocol. Also, the wireless communication may include, for example, local communication. The local area communication may include at least one of Wi-Fi, Bluetooth, near field communication (NFC), or global positioning system (GPS), for example. The wired communication may include at least one of a universal serial bus (USB), a high definition multimedia interface (HDMI), a recommended standard 232 (RS-232), a plain old telephone service (POTS) . Network 300 may include at least one of a telecommunications network, e.g., a computer network (e.g., LAN or WAN), the Internet, or a telephone network.

The fluid control device 100 can prevent backflow of the fluid, and a detailed description of the fluid control device 100 will be described in detail later with reference to FIG.

FIG. 2 is a configuration diagram of the fluid control device 100 according to an embodiment of the present invention. Referring to FIG. 2, the fluid control device 100 may include a silicon tube 101 and a plurality of check valves 102 to 103. However, the configuration of the fluid control device 100 shown in FIG. 2 is only one embodiment of the present invention, and various modifications are possible. For example, the fluid control device 100 according to various embodiments may further include a driving unit 104, a safety control unit 105, a sensor unit 106, and a wireless communication unit 107.

The silicone tube 101 has a resilient tube shape and can pass the liquid through a space formed inside the tube. In other words, the silicon tube 101 may be in the form of a tube having a tunnel structure, and may be connected to the liquid bag to allow the liquid contained in the liquid bag to pass therethrough. For example, the silicone tube 101 may be connected to a liquid bag containing the Ringer's solution to allow passage of the Ringer's solution inside the liquid bag.

At this time, the silicon tube 101 may have elasticity. When externally applied physical pressure, the silicone tube 101 can be deformed or contracted based on the direction in which the pressure is applied, and can return to the original shape as the applied physical pressure is released.

The plurality of check valves 102 to 103 are located at both ends of the silicon tube 101 and can be configured so that the liquid passing through the inside of the silicone tube 101 does not flow backward. In this case, the first check valve 102 may be formed at one end of the silicon tube 101, the second check valve 103 may be formed at the other end of the silicon tube 101, 102 and the second check valve 103 may be formed in the same direction so that the fluid does not flow backward.

The plurality of check valves 102 to 103 may include a valve plate for controlling the movement of the valve plate so that the valve plate and the liquid flow in one direction. The description of the plurality of check valves 102 to 103 will be described once again in Fig. 3 which will be described later.

3 is a view showing the operation of one of the check valves according to an embodiment of the present invention. Since the check valve described in FIG. 3 is only one of the various embodiments of the present invention, the shape of the check valve of the present invention is not limited to that of FIG. 3, and there may further exist check valves of various embodiments.

The plurality of check valves 102 to 103 can be used to cause the liquid in the silicone tube 101 to flow only in one direction and operate by a fluid such as liquid passing through the silicone tube 101, . ≪ / RTI >

Hereinafter, in order to facilitate understanding, the normal flow direction in which the liquid flows should be referred to as a forward direction, the opposite direction as a reverse direction, and the case where the liquid flows in the reverse direction in the silicone tube 101 is referred to as reverse flow. On the other hand, the arrows used in the drawings indicate the flow of the liquid, and the direction of arrows from the left to the right is referred to as a forward direction and vice versa.

Referring to FIG. 3, in step S301, the check valve is formed at a predetermined position of the silicone tube 101, and includes a valve plate separating the inside of the check valve from the left and right sides, and a valve plate formed to control the movement of the valve plate . When the liquid in the check valve flows in the forward direction in step S302, the movement of the valve plate is controlled based on the valve plate support, and fluid such as liquid passes through the space formed inside the check valve to the right of the check valve . According to an embodiment of the present invention, the thickness of the valve may be 0.2 mm to 5 mm, but the present invention is not limited thereto. The valve may have various thicknesses depending on the flow amount of the liquid or the pressure applied to the silicone valve 101.

On the other hand, when the liquid in the check valve flows in the reverse direction in step S303, the flow of the liquid is blocked by the valve membrane, and the liquid does not pass in the right direction of the check valve.

The plurality of check valves 102 to 103 may be located in a predetermined section of the silicon tube 101. In this case, the first check valve 102 is located at one end where a predetermined section starts, and the second check valve 103 May be located at the other end where a predetermined section ends. In general, one of the important functions of the vein in the human body is to transfer blood from the peripheral capillary to the heart. In order to perform this function, the intravenous vein has a valve that allows the blood to flow only in one direction, The vein with the valve acts as a subdivision of the pumping action to carry the blood to the heart against gravity, and the pressure created by the contraction of the calf muscles in the human body causes the blood in the muscle to flow through the heart arrhythmia You can push your blood to the heart. The plurality of check valves 102 to 103 can serve as a valve plate for allowing blood in the vein to flow only in one direction.

When the pressure of the inside of the silicon tube 101 is increased by applying a physical pressure to the silicon tube 101, the first check valve 102 located at one end where the predetermined section of the silicon tube 101 starts is closed The second check valve 103 located at the other end of the predetermined section is opened to discharge the liquid inflowed into the predetermined section of the silicon tube 101 . In other words, when a physical pressure applied to the silicon tube 101 is applied, the pressure of a predetermined section of the silicon tube 101 is increased, and the liquid that is newly introduced into the corresponding section is blocked, have.

On the other hand, when the pressure inside the silicone tube 101 is lowered by releasing the physical pressure applied to the silicone tube 101, the first check valve 102 is opened to allow the liquid to enter the predetermined section of the silicone tube And the second check valve 103 is closed, so that the liquid inflow into the silicone tube may not be discharged. In other words, when a physical pressure is applied to the silicon tube 101, the pressure of a predetermined section divided by the plurality of check valves 102 to 103 of the silicon tube 101 is lowered, and the liquid is not discharged in the corresponding section .

The operation of the fluid control device 100 will be described in more detail with reference to FIG. 4 is a view showing an operation of the fluid control device according to an embodiment of the present invention.

Referring to FIG. 4, in step S401, a plurality of check valves 102 to 103 are connected to both ends of the elastic silicon tube 101 so that the liquid flows in one direction, and the first check valve 102 and the second A pressure is applied to the silicon tube 101 located between the check valves 103 to raise the pressure of the chamber inside the silicon tube so that the second check valve 103 opens to discharge the fluid introduced into the chamber inside the silicon tube 101 do. In this case, the first check valve 102 is closed because it is in the direction of the pressure directed out of the chamber of the silicon tube 101, and can block the fluid flowing into the chamber.

When the pressure applied to the silicone tube 101 is released in step S402, the silicone tube 101 returns to its original state due to the restoring force of the silicone tube 101. At this time, the inside of the silicone tube 101 becomes a negative pressure, So that the second check valve 103 is closed and the first check valve 102 is opened so that the fluid can be sucked into the chamber of the silicon tube 101 and introduced.

이라 하고, 외부의 압력을 받아 수축된 실리콘 튜브(101) 챔버 안의 용적을

라 하면, 한번에 변화할 수 있는 용적의 변화량은 아래와 같다. The steps S401 and S402 are repeated so that the flow rate can be controlled while the flow of the fluid flowing into the silicon tube 101 is continuously maintained. This can be expressed mathematically as follows: If external pressure is not applied, the volume in the chamber of the silicon tube 101

And the volume in the shrunk silicon tube 101 chamber under external pressure

The amount of change in volume that can be changed at one time is as follows.

On the other hand, when pressure is applied to the silicon tube 101 periodically, the average flow rate of the fluid is as follows.

The flow rate of the fluid can control the flow rate desired by the user by controlling the time period of applying the pressure to the silicone tube 101. In the case of intravenous injection for administering the liquid, The prediction of the time is possible and the prediction of the residual relative to the starting point is also possible.

According to various embodiments of the present invention, the fluid control device 100 may further include a driving unit 104, a safety control unit 105, a sensor unit 106, and a wireless communication unit 107.

The driving unit 104 may perform an action of applying or releasing a physical pressure to the silicon tube 101 at a predetermined time interval. At this time, the driving unit 104 can perform an operation of physically moving or releasing the silicon tube 101 as the motor is driven in the cam. CAM is an irregularly shaped mechanical component that is determined according to the type of operation that is generally required. It is a machine that forms a machine that requires precise displacement and operation time. It enables irregular movement can do.

For example, the driving unit 104 may periodically apply pressure to the silicon tube 101 using PWM (Pulse Width Modulation) control of a linear actuator. PWM control may be a method of controlling an analog circuit with a digital output of a given processor. However, the operation of the driving unit 104 is not limited to those described above, and various cam driving methods and control methods can be used.

The safety control unit 105 is located on at least one check valve 102 to 103 and is capable of checking the volume fluctuation in the silicon tube 101. [ More specifically, the safety control unit 105 applies a time-varying magnetic field to the silicon tube 101 through a coil, and based on a detection signal that reflects a change in the induction capacity of the coil due to the flow inside the silicon tube affected by the time- The volume variation in the silicon tube 101 can be checked

In another embodiment, the safety control section 105 is located on the silicon tube 101 and may check the volume variation in the silicon tube 101. [ In other words, the safety control unit 105 applies a time-varying magnetic field to the silicon tube 101 through a capacitor-shaped electrode that surrounds the silicon tube 101 by the coil, and applies a time-varying magnetic field to the coil The volume variation in the silicon tube 101 may be checked based on the detection signal reflecting the change in the inductive capacity of the silicon tube 101. [

The current flowing in the coil generates a magnetic field around the direction axis of the current to generate a magnetic flux. At this time, when the coil comes close to the fluid, Faraday's law of induction induces a second-order circular current due to the influence of the time-varying magnetic field applied from the outside by eddy currents (eddy current. This eddy current creates a secondary magnetic flux at the main surface of the coil, that is, generates a secondary magnetic flux which is opposite to the time-varying magnetic field in accordance with Lenz's law.

On the other hand, in the case of the silicon tube 101 through which the fluid as the fluid passes, the time varying magnetic field generated by the adjacent coils causes a change in the induction capacity of the coil due to the electric conductivity and the magnetic permeability due to the constituent components inside the fluid. If the flow of the fluid is stopped or flows at a constant rate, the external magnetic pole coil will have a specific inductive capacity due to inherent permeability and electrical conductivity of the fluid.

Assuming that the average cross-sectional area of the silicon tube 101 is kept constant within the volume of interest, and assuming that the velocity at which the fluid flows changes with time, the volume of the fluid passing through the volume of interest Linearly proportional to the velocity, and the conductivity and permeability due to the components of the fluid change in proportion to the volume change.

Thus, the volume of fluid passing through the interior of the volume of interest, which magnetically influences by the external coil, will change in time with the rate at which the fluid flows, and the main factor determining the magnetic properties within the volume of the fluid The conductivity of the component also changes in proportion to the rate at which the fluid flows. As a result, the change in the induction capacity of the outer coil is proportional to the rate of change in the flow of the fluid. In addition, the inductive capacity change can be proportional to the change in the volume of the fluid. In brief, the safety control unit 105 can detect an abnormality such as a flow amount of the liquid in the silicon tube 101, clogging or bubbles.

The safety control unit 105 can stop the operation of the driving unit 104 when an abnormality is detected in the volume fluctuation in the silicon tube 101. [ In other words, the safety control unit 105 senses the amount of the liquid flow in the silicone tube 101, detects an abnormality in the infusion amount or infusion rate of the infusion solution due to clogging of the infusion solution, malfunction of the driving unit 104, The supply of the liquid flowing through the silicone tube 101 can be immediately stopped.

The sensor unit 106 can check the input amount of the liquid inflowing into the silicon tube 101. The sensor unit 106 is formed on the upper portion of the first check valve 102 to check the input amount of the inflow water into the first check valve 102 and is formed in the drip chamber connected to the receiver bag, It is possible to check the input amount of the inflow water. For example, the sensor unit 106 may check the input amount of the infusion solution by detecting the number of droplets through the multi-infrared sensor, but the present invention is not limited thereto, and it is possible to check the input amount of the infusion solution through various embodiments. The sensor unit 106 can immediately stop the supply of the liquid flowing through the silicone tube 101 when an abnormality occurs in the amount of the liquid inflowing into the silicone tube 101. [

The wireless communication unit 107 can transmit information on the amount of the liquid passing through the silicone tube 101 and the liquid to other devices located at a remote place. For example, the wireless communication unit 107 may monitor the amount of fluid, the amount of flow, the remaining amount of remaining fluid, remaining time of administration, and the like, and transmit the remaining amount to the other devices connected to the network. On the basis of this, the medical staff can manage the liquid injection remotely to increase the efficiency of the work. In another example, the wireless communication unit 107 transmits information such as the remaining amount of the fluid, the infusion rate of the infusion fluid, the infusion completion time of the infusion fluid, etc. to the smartphone or the external monitoring apparatus, , The infusion rate of the fluid may be adjusted in a smartphone or an external monitoring device. Therefore, it is possible to quickly remove the needle from the patient immediately after the infusion of the fluid is completed, and to prevent the staff of the medical staff from wasting the remaining fluid or controlling the infusion rate of the fluid or checking the remaining amount of the fluid .

Such a fluid control device 100 can easily set and regulate the amount of injected fluid such as a ringer liquid to be injected into a patient so that it is possible to prevent the infusion of the injected fluid in excess of the infusion amount and to easily manage the patient, And the weight of one droplet can be accurately calculated from the number of droplets measured by the sensor unit 106. From this, the infusion rate of the infusion fluid and the expected infusion completion time can be calculated.

The liquid control device 100 constitutes a small pump by using a plurality of check valves 102 to 103 and a silicon tube 101 when the liquid is injected, ), The infusion rate of the liquid can be adjusted. Therefore, even if the patient is difficult to move his / her body, there is no problem in controlling the infusion rate of the fluid.

On the other hand, the inconvenience that the infusion rate of the intravenous infusion fluid is checked from time to time and the infusion rate is directly controlled may be solved by the patient or the patient's caregiver who is usually used in the infusion device, 100) has a function of completely shutting off the tube so that air is not injected into the blood vessel when the liquid is exhausted, thereby relieving the anxiety of the patient and the caregiver concerned about the exhaustion of the ringer solution.

When the patient in the intravenous injection infusion state moves through the plurality of check valves 102 to 103, the infusion rate is adjusted by the height change of the arm in which the needle is inserted or the height change of the Ringer's solution bottle It is possible to prevent the phenomenon that the blood in the blood vessels is changed or reversed, and the monitoring system including the liquid cradle apparatus of simple structure can be provided, so that not only the manufacturing cost can be reduced but also the convenience of the user is improved, It is possible to increase the merchantability which is easy to carry out.

FIG. 5 is a flowchart illustrating a method of adjusting a fluid according to an embodiment of the present invention. The method of adjusting the fluid according to FIG. 5 will be described in detail in the respective parts of the fluid control device 100 described with reference to FIGS. 1 to 4. FIG. Therefore, even if not described below, it can be included in or can be deduced from the operation description of the fluid control device 100 described with reference to FIGS. 1 to 4, so that detailed explanation is omitted.

Referring to FIG. 5, in step S601, the liquid control apparatus 100 passes the liquid through a space formed inside the elastic silicone tube 101 having a tube shape, and in step S602, 103, it is possible to prevent the liquid passing through the inside of the silicon tube 101 from flowing backward.

The fluid control device 100 may perform an operation of applying or releasing a physical pressure to the silicon tube 101 at a predetermined time interval in the driving part 104 and may perform at least one check valve 102 To 103, and the volume variation in the silicon tube 101 can be checked. The input amount of the fluid flowing into the silicone tube 101 through the sensor unit 106 can be checked and the information on the amount of the fluid flowing through the silicone tube 101 and the fluid flowing through the wireless communication unit 107 can be detected at a remote place To another device.

It will be understood by those of ordinary skill in the art that the foregoing description of the embodiments is for illustrative purposes and that those skilled in the art can easily modify the invention without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: fluid control device
101: Silicone tube
102: first check valve
103: second check valve

Claims (12)

1. A fluid control device for preventing reverse flow of a fluid,
A silicone tube having a shape of a tube and having elasticity for passing the liquid through a space formed inside the tube;
A plurality of check valves located at both ends of the silicon tube and configured such that the liquid passing through the inside of the silicone tube does not flow backward;
A driving unit for performing an operation of applying or releasing a physical pressure to the silicon tube;
A safety control unit located on at least one of the plurality of check valves and for checking fluctuation of an amount of fluid flow inside the silicon tube based on variation of induction capacity of the coil due to flow inside the silicon tube; And
And a sensor unit for checking an input amount of the liquid introduced into the silicone tube,
The safety control unit controls the operation of the driving unit based on the amount of the infusion liquid and the variation in the inflow amount of the liquid inside the silicone tube,
The plurality of check valves
A first check valve formed at one end of the silicon tube;
And a second check valve formed at the other end of the silicon tube,
Wherein the first check valve includes a valve plate having a predetermined thickness and a valve plate for controlling the movement of the valve plate so that the liquid flows in one direction,
The valve plate moves based on a pressure direction inside the silicon tube,
Wherein the valve plate has a predetermined space formed in both end regions of the first check valve in accordance with the movement of the valve plate,
Wherein the liquid passes through the interior of the silicon tube through the space,
Wherein the first check valve and the second check valve are formed in the same direction,
The first check valve prevents the inflow of the liquid into the silicone tube according to the movement of the valve plate of the first check valve and the second check valve prevents the inflow of liquid into the silicone tube when the pressure in the silicone tube is increased by applying physical pressure to the silicone tube, 2 check valve discharges the liquid in the silicone tube according to the movement of the valve plate of the second check valve,
When the pressure in the silicone tube is lowered due to the release of the physical pressure to the silicone tube, the first check valve moves the liquid into the silicone tube according to the movement of the valve plate of the first check valve, Wherein the valve prevents the discharge of the liquid into the silicon tube in accordance with the movement of the valve plate of the second check valve. delete delete delete The method according to claim 1,
Wherein the driving unit performs an operation of applying or releasing a physical pressure to the silicon tube as the motor is driven in a cam. delete The method according to claim 1,
Wherein the safety control unit applies a time-varying magnetic field to the silicon tube through a coil, detects a change in induced capacitance of the coil due to a flow of the fluid in the silicon tube affected by the time-varying magnetic field, And the volume variation in the silicon tube is checked based on the signal. delete The method according to claim 1,
Further comprising a wireless communication unit for transmitting information on the amount of the liquid passing through the silicone tube and information on the liquid to another device located at a remote place. The method according to claim 1,
Wherein the plurality of check valves comprises a valve membrane having a thickness of 0.2 mm to 5 mm. delete A method for preventing reflux of a fluid,
Passing the liquid through a space formed inside the silicone tube having a tube shape and having elasticity;
Preventing the liquid passing through the interior of the silicone tube from flowing backward based on a plurality of check valves located at both ends of the silicone tube;
Performing an act of applying or releasing physical pressure to the silicon tube;
Checking a variation in the amount of the liquid flow inside the silicon tube based on a change in the induction capacity of the coil due to the flow inside the silicon tube, the variation being located on at least one of the plurality of check valves; And
And checking an input amount of the inflow fluid into the silicone tube,
Wherein the step of checking the variation of the amount of the fluid flow inside the silicon tube is performed to apply or release a physical pressure to the silicon tube based on the amount of the infusion fluid and the variation of the fluid flow amount inside the silicon tube,
The plurality of check valves
A first check valve formed at one end of the silicon tube;
And a second check valve formed at the other end of the silicon tube,
Wherein the first check valve includes a valve plate having a predetermined thickness and a valve plate for controlling the movement of the valve plate so that the liquid flows in one direction,
The valve plate moves based on a pressure direction inside the silicon tube,
Wherein the valve plate has a predetermined space formed in both end regions of the first check valve in accordance with the movement of the valve plate,
Wherein the liquid passes through the interior of the silicon tube through the space,
Wherein the first check valve and the second check valve are formed in the same direction,
The step of preventing the fluid from flowing backward includes:
The first check valve prevents the inflow of the liquid into the silicone tube according to the movement of the valve plate of the first check valve and the second check valve prevents the inflow of liquid into the silicone tube when the pressure in the silicone tube is increased by applying physical pressure to the silicone tube, 2 check valve discharges the liquid in the silicone tube according to the movement of the valve plate of the second check valve,
Wherein when the pressure in the silicone tube is lowered by releasing the physical pressure on the silicone tube, the first check valve enters the liquid in the silicone tube according to the movement of the valve plate of the first check valve, And the valve prevents discharge of the liquid into the silicone tube in accordance with the movement of the valve plate of the second check valve.

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