WO2018026178A1 - Infusion flow-rate regulating device - Google Patents

Abstract

The present invention relates to an infusion flow-rate regulating device (100) enabling easy attachment and detachment of a flow-rate regulator (240) provided in an infusion set (200), and enabling automatic adjustment of a dial (242) of the attached flow-rate regulator (240) such that a liquid can be administered at a target flow rate. To this end, an infusion flow-rate regulating device (100) of the present invention comprises: a body (110); a dial mounting unit (130) rotatably connected to the body (110); a flow-rate regulator separation unit (140) preventing a flow-rate regulator (240), mounted on the dial mounting unit (130), from being arbitrarily separated; and a control unit (170) for controlling the flow-rate of a liquid by using a method for rotating a dial (242) for each drip infusion dripping time interval corresponding to a target flow rate and/or a method for rotating the dial (242) to a position enabling administration of the liquid at a target flow rate by means of a single flow-rate adjustment.

Description

Sap Flow Control

The present invention relates to an infusion flow rate control device that can easily detach the flow controller provided in the infusion set, and can automatically adjust the dial of the attached flow controller to administer the infusion at the target flow rate.

Conventional infusion set 20 is provided with flow control means 24 ', 24 mounted in the middle of the tube 22, as shown in Figure 1 to adjust the flow rate of the infusion.

The flow rate control means 24 'and 24 have a lot of roller clamps 24 to adjust the flow rate by the operation of the roller and a flow regulator 24 to change the flow rate while changing the internal flow path. It is used.

However, since the flow rate of the fluid varies according to various conditions such as the level difference (H), the fluid temperature, and the condition of the patient, which are defined as the 'difference in height between the fluid level in the fluid bag 10 and the needle 23', In the case of the flow rate adjusting means (24 ', 24) can not be adjusted to the prescribed target flow rate. For this reason, trials and errors are observed in the actual clinical site by slowly changing the rollers or dials of the flow regulating means 24 'and 24 and visually observing the drip speed of the sap (21a, drop, unit: gtt). There is a problem of adjusting the flow rate in a manner.

Due to these problems, infusion pumps based on the principle as disclosed in Korean Utility Model Publication No. 20-1989-0004900 have been mainly used for precise fluid administration.

Infusion pump is a device that allows the fluid to be administered at the target flow rate by forcibly deforming the outer surface of the tube by the pumping means. Therefore, a problem such as vascular burst may occur due to pressure being applied even in a situation in which the blood vessel of the patient is blocked during the administration of the fluid. In addition, since the power must be continuously supplied to operate the power consumption is a lot, and the power supply is interrupted because the administration of the sap may lead to a medical accident, there is a hassle to always pay attention. In addition, in order to administer the fluid at the correct flow rate, an infusion pump tube with high elastic restoring force must be used. However, even in this case, since the deformation of the tube is continuously repeated, there is a problem in that the elastic restoring force of the tube is lowered so that it is not guaranteed to be administered at the correct flow rate.

Therefore, there has been a need for an infusion flow rate adjusting device which can control an accurate infusion flow rate using a conventional infusion set and can be easily used.

As a technology capable of solving the needs of the clinical site, the inventor of the present invention is equipped with a flow regulator 30, as shown in Figure 2 by rotating the dial of the flow regulator 30 to any initial rotational position Inventing a fluid flow rate control device for calculating the flow rate once, using the same to grasp the rotational position of the flow controller 30 corresponding to the target flow rate by rotating the dial of the flow controller 30 to the target rotational position to adjust the flow rate (Korean Patent No. 10-1532613).

However, as shown in FIG. 2, the structure of the flow regulator 100, which grips the flow regulator 30 and covers the cover, is generally complicated, and thus, several operations are required when the flow regulator 30 is mounted. However, there is a problem that it is difficult to miniaturize structurally. In addition, the fluid flow rate control device also has a problem that can not be monitored and measured the exact flow rate within the normal vibration range.

(Patent Document 1) KR 20-1989-0004900 Y1 (July 28, 1989)

(Patent Document 2) KR 10-1532613 B1 (2016.06.30.)

The technical problem to be achieved by the present invention is convenient to carry in the clinical field, it is possible to safely and quickly detach the flow regulator 240 provided in the infusion set 200, it is possible to accurately adjust the amount of fluid administered to the target flow rate It is to provide a fluid flow rate control device.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. There will be.

The present invention for achieving the above technical problem, by rotating the dial 242 of the infusion flow rate regulator 240 is a fluid flow rate control device 100 for adjusting the fluid flow rate, a drive motor (not shown) is installed therein Is connected to the main body 110 and the drive motor (not shown), and the dial mounting portion 130 and the dial mounting portion 130 configured to mount and rotate the dial 242 of the flow regulator 240 It provides a fluid flow rate control device including a flow regulator separator 140 and the control unit 170 having a function of locking the mounted flow regulator 240.

At this time, the dial mounting unit 130 and the flow regulator separating unit 140, when the dial 242 is mounted to the dial mounting unit 130, the dial 242 is the flow regulator separating unit 140 After passing through, it may be configured to be mounted on the dial mounting portion 130.

In addition, in another embodiment of the present invention, the flow regulator separator 140 is a locking means for preventing the flow controller 240 is detached when the flow regulator 240 is mounted on the dial mounting portion 130, the flow regulator ( It provides a fluid flow rate control device including a locking means for operating when you want to remove the 240 from the dial mounting portion 130, and a separating means for applying a force in a direction to be separated by the operation of the unlocking means. .

In addition, the flow regulator separator 140 is a hollow flow regulator separator body 141 rotatably provided, and the support groove 145 formed on the upper and lower portions of the flow regulator separator body 141, respectively. It includes, The locking means comprises a locking bar 142 formed in front of each of the support groove 145, The unlocking means is unlocked protruding on one side of the flow regulator separator body 141 It includes a projection 146, the separation means may be configured to include a separation inclined surface 144 formed on one side of the inner support groove 145.

In addition, the unlocking protrusion 146 may include a button 146d having a stopper 146e formed therein to prevent the flow regulator separator body 141 from being randomly unlocked.

In addition, in another embodiment of the present invention, the main body 110 is further formed with an input unit 150 and an output unit 160, the control unit 170, the dial 242 of the flow regulator 240 The dial corresponding to the input target flow rate Q _t using the flow rate (Q), the level difference (H), and the overall flow coefficient (C), which are variable according to the rotation, can be represented by the relationship Q = C · H ( It provides an infusion flow rate adjusting device that includes a configuration for deriving the target rotation position of 242.

In another embodiment of the present invention, the controller 170 measures the measured flow rate (Q _m ) at all times or at predetermined intervals, and displays the measured flow rate on the output unit 160 and is connected to the flow controller 240. When the acceleration of the drop cylinder 210 of 200 is equal to or less than the preset threshold, and the measured flow rate Q _m is greater than the target flow rate Q _t , the difference ΔQ is greater than the preset value, the dial 242. And a configuration for re-adjusting the target rotational position of the dial 242 by using a correlation between the rotational position of the control panel and the measured flow rate Q _m and the target flow rate Q _t .

In another embodiment of the present invention, the control unit 170, the acceleration threshold value when the acceleration of the drop container 210 of the infusion set 200 connected to the flow regulator 240 exceeds a preset threshold value, The drop falling within the preset time t after exceeding is not used for the calculation of the measured flow rate Q _m , and the output unit 160 maintains the previous measured flow rate Q _m . The drop falling after exceeding the acceleration threshold and after the preset time t provides the infusion flow rate adjusting device including the configuration used for the calculation of the measured flow rate Q _m .

The controller 170 may include a configuration for notifying through a warning sound and / or a warning light and / or a warning message when the number of droplets not used for detecting the measured flow rate Q _m exceeds a preset number within a unit time. have.

Further, according to another embodiment of the present invention, the control unit 170 is configured to derive a drop time interval of the infusion drop corresponding to the input target flow rate (Q _t ), and the flow rate regulator 240 for each time interval It provides a fluid flow rate control device that includes a configuration to rotate the dial 242 of the sap drop until one sap drop, and rotates the dial 242 reversely after the one sap drop falls. .

Further, in another embodiment of the present invention, the controller 170 provides an infusion flow rate adjusting apparatus that includes a configuration for measuring the speed of the infusion droplets and multiplying the drop volume to calculate the measured flow rate (Q _m ). .

In addition, the control unit 170 stores a relationship between the speed of the infusion drop and / or the volume change of the drop with respect to the temperature of the infusion as data, and includes a configuration for correcting when calculating the measured flow rate Q _m . Can be.

In addition, the control unit 170 stores the relationship between the volume change of the drop with respect to the slope of the drop container 210 of the infusion set 200 connected to the flow regulator 240 as data, the drop and drop falling Acceleration between the two does not exceed the threshold value, and when the slope is maintained within a predetermined difference (Δθ) at a specific value may include a configuration for correcting the slope when calculating the measured flow rate (Q _m ).

The infusion flow rate adjusting apparatus of the present invention configured as described above can automatically adjust the infusion flow rate by inputting the target flow rate.

In addition, the sap of the target flow rate can be safely and quickly administered to the patient through a method of deriving the target rotation position corresponding to the target flow rate through the flow rate information measured once at any initial rotation position.

Next, the fluid flow rate adjusting apparatus of the present invention can be stably adjusted to the target flow rate with a single flow rate adjustment even if the setting state of the fluid set is changed while monitoring the flow rate while administering the fluid in accordance with the target flow rate. .

Next, the fluid flow rate control device of the present invention can safely and accurately administer the sap of the target flow rate to the patient through the method of supplying the drop by rotating the dial of the flow controller mounted at each drop time interval of the drop corresponding to the target flow rate. It may be. In this way, in particular, even when the target flow rate is small and the drip interval (or period) is long, the sap can be supplied effectively and safely at the target flow rate.

Lastly, the fluid flow rate adjusting device of the present invention has a simple and compact structure for mounting and rotating the flow rate controller and a dial mounting portion for separating and rotating the flow rate controller, so that the flow rate controller can be easily attached and detached and can be easily used in the clinical field.

The effects of the present invention are not limited to the above-described effects, but should be understood to include all the effects deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a conventional infusion set state diagram.

Figure 2 is a state diagram of a conventional infusion flow rate adjusting device and the set of the infusion.

Figure 3 is a state diagram of the infusion flow rate adjusting device and the set of the present invention.

4 is a graph showing the relationship between droplet velocity and droplet volume.

5 is a perspective view of a flow regulator mounted on the present invention.

6 is a cross-sectional view of the drop sensor 300 used in the infusion set.

Figure 7 is an exploded view of the first embodiment of the infusion flow rate control apparatus 100 of the present invention.

8 is a combined view of the first embodiment of the infusion flow rate control device 100 of the present invention.

    (a) Sap flow rate regulator coupling.

    (b) Sap flow regulator with flow regulator.

Figure 9 is an exploded view of the second embodiment of the infusion fluid control device 100 of the present invention.

    (a) First perspective view of the infusion flow rate adjusting device

    (b) Second perspective view of the fluid flow rate adjusting device

Figure 10 is a combination of the second embodiment of the infusion flow rate control device 100 of the present invention.

    (a) Sap flow rate regulator coupling.

    (b) Sap flow regulator with flow regulator.

11 is a circuit connection diagram of the control unit 170.

12 is a flow rate change according to the rotational position of the dial in the flow regulator.

    (a) Graph of flow rate change and global flow rate coefficient (C) versus rotation angle.

    (b) Flow rate change graph against scale flow rate.

Hereinafter, with reference to the accompanying drawings will be described the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, coupled)" with another part, it is not only "directly connected" but also "indirectly connected" with another member in between. "Includes the case. In addition, when a part is said to "include" a certain component, this means that it may further include other components, without excluding the other components unless otherwise stated.

Hereinafter, with reference to the drawings showing a preferred embodiment of the present invention will be described to be easily implemented by those skilled in the art.

3 is a state diagram illustrating a configuration in which the infusion set adjusting apparatus 100 according to the embodiment of the present invention is used in the infusion set 200 together with the drip sensor 300.

Prior to the description of the infusion flow rate control device 100 and the drip sensor 300, the infusion set 200 will be briefly described with reference to FIGS.

First, the volume of the infusion drop 212 falling inside the drop container 210 provided in the infusion set 200 may be slightly different depending on the drop speed, the inclination of the drop container, the infusion temperature and the like. As an example, as shown in FIG. 4, it can be seen that the volume of the drop also increases as the speed of the drop 212 increases. The volume of the drop may also be affected by the inclination of the drop container 210 or the temperature change of the sap.

When measuring the flow rate, the volume of the drop may simply be regarded as a constant value without considering the change in the drop rate, and the flow rate may be calculated by multiplying the drop rate. However, a more accurate flow rate may be measured by reflecting the variation of the drop volume with the drop velocity. This can be easily implemented by pre-stored as a data in the control unit 170 of the infusion flow rate adjusting device 100 to be described later in accordance with the drop volume obtained through the experiment as shown in the graph shown in FIG. In addition, the correlation between the drop volume and the fluid temperature, such as the inclination of the drop container can be converted into data through the experiment, and if necessary to reflect this, it is stored in advance in the control unit 170 of the fluid flow control device 100 as described above You can put it.

In the present invention, the term "storing as data in the control unit 170" means a function of interpolation or curve fitting of a plurality of experimentally obtained data, corresponding to all points of each variable. It also includes the state that is stored so that the value is known. In addition, since there may be a difference in the characteristic information of the drop container 210 for each manufacturer, it may be stored so that it can be selected for each manufacturer. In addition, the drop volume information may be stored separately for each type of drop container (210). For example, it is possible to distinguish and store the information of the drop volume for an adult drop container of 20 drops per 1 cc of sap and an infant / child drop container of 60 points per 1 cc of sap.

Next, looking at the flow regulator 240 applied to the embodiment of the present invention, as shown in Figure 5, the upper and lower is provided with an upper tube connection portion 241a and a lower tube connection portion 241b, the rear handle The body 241 which 241c has is included. In addition, an inner flow path (not shown) is provided on an inner surface, and includes a dial 242 rotatably mounted to the body 241 to change the inner flow path as the rotational position is adjusted.

The dial 242 is formed with an unevenness 242c along the circumference of the outer circumference to prevent slipping when held by a hand or when mounted on the dial mounting unit 130 to be described later, and the inflow of the sap is blocked (or the minimum flow rate). An initialization scale or grooves or protrusions 242d may be formed on the bottom surface or the circumferential surface thereof to indicate the position. On the other hand, the body 241 may also form a reference protrusion or scale 241d to be aligned with the initial position of the initialization scale or the projection 242d.

Also, as shown in FIG. 5, the dial 242 of the flow controller 240 is engraved with a number 242b corresponding to the scale 242a showing the rotational position visually. The scale 242a and the number 242b may indicate the angle of the dial 242 and the corresponding number, and the flow rate (experimentally measured while rotating the dial 242 at a specific water level H and a specific temperature condition) Q _m ) may be represented by the graduation flow rate (242b).

Next, the drip sensor 300 mounted on the drop container 210 of the infusion set as shown in FIG. 6 will be described.

6 shows an example of a C-shaped or U-shaped drop sensor 300 formed to be detachable from the side of the drop container 210.

The drop sensor 300 has a drop detection unit 330 for detecting whether the drop falls and a motion detection unit 340 for detecting the movement of the infusion bag 10 or the drop container 210.

In one embodiment of the drop detection unit 330 shown in Figure 6 is opposed to the inner surface surrounding the drop tube 210 in the second groove 321 of the second body 320 in order to detect whether the drop of the drop; A drop detection unit 330 composed of a light emitting element 331 and a light receiving element 332 facing each other is formed. The light receiving element 332 is irradiated from the light emitting element 331 to sense the light passing through the drop cylinder 210. The light of the light emitting device 331 may be used a variety of known light, such as infrared rays, laser beams.

One embodiment of the motion detection unit 340 shown in Figure 6 is formed on the second body 320 to detect the movement of the infusion bag 10 or the drop container (210). Motion detection unit 340 is a three-axis accelerometer; Or it consists of 3-axis accelerometer and gyro sensor to measure 3-axis acceleration, angular acceleration and inclination.

The signals measured from the drop detector 330 and the motion detector 340 may be provided with a separate calculation unit 350 in the drop sensor 300 to calculate a measured value through this, and to adjust the fluid flow rate to be described later. An operation and control may be integrated through the control unit 170 formed in the device 100. In the embodiment of the present invention it was shown that the operation and control is integrated through the control unit 170 formed in the infusion flow rate control apparatus 100.

In addition, necessary information such as information measured by the drip sensor 300 or calculated information may be displayed on the output unit 160 formed in the infusion flow rate adjusting apparatus 100 described later.

Next, a first embodiment of the infusion flow rate adjusting apparatus 100 will be described with reference to FIGS. 3 and 7.

The first embodiment of the infusion flow rate adjusting device 100 includes a main body 110 and the dial mounting portion 130 as shown in Figs. The main body 110 may be provided with an input unit 150 for inputting data and an output unit 160 for indicating information such as flow rate, and may be formed at one side, and may be connected to the control unit 170 and the dial mounting unit 130 therein. A driving motor (not shown) for adjusting the rotation angle and direction is provided.

As shown in FIG. 7, the dial mounting unit 130 is formed at one side of the main body 110. In FIG. 7, the dial mounting unit 130 is mounted on the dial mounting unit mounting unit 111 formed on one side of the main body 110 and coupled with a driving motor (not shown). The dial mounting unit 130 may be configured to protrude according to the shape of the main body 110. In the present embodiment, the dial mounting unit 130 will be described with reference to the configuration shown in FIG. As shown in FIG. 7, an upper mounting part 121 is formed at an upper portion of the dial mounting part installing part 111 of the main body 110. The upper mounting portion 121 is configured to be detachably fixed to the upper portion, that is, the upper tube connection portion 241a of the flow regulator 240. An intermediate mounting part 122 is formed below the dial mounting part mounting part 111. The intermediate mounting portion is configured so that the lower portion of the flow regulator 240, that is, the lower tube connection portion 241b can be detachably fixed. In addition, the intermediate mounting portion 122 may be formed so as to be formed long as shown in Figure 7 so that the lower tube (220b) can be installed. On the other hand, the lower mounting portion 124 that can be detachably mounted to the lower tube 220b below the intermediate mounting portion 122 is formed. The bubble sensor 125 may be mounted between the intermediate mounting portion 122 and the lower mounting portion 124. In addition, the lower mounting portion 124 may further be provided with a fixing protrusion 123 to prevent the lower tube (220b) from being separated from the main body 110.

The dial mounting unit 130 is configured to easily rotate the dial 242 by mounting the flow regulator 240, the structure thereof will be described in detail with reference to FIG. The dial mounting portion 130 is a mounting portion formed so that the dial 242 is inserted and gripped by protruding forward along the edge of the mounting portion bottom surface 131 and the bottom surface 131 coupled to the drive motor (not shown). Side 132 is formed. In addition, the inner surface of the mounting portion side 132 has a side concave and convex 133 that can be combined with the concave-convex 242c formed in the dial 242 to be more stably coupled with the dial 242 of the inserted flow regulator 240 It may be formed. In addition, the bottom surface 131 may be formed with the bottom surface irregularities 134 as necessary, such as coupling with the dial 242 and / or position alignment. Meanwhile, a reference line (not shown) indicating a reference position may be formed on the outer surface of the mounting portion side surface 132.

When the flow controller 240 is to be mounted on the dial mounting unit 130, first, the side surface unevenness 133, the bottom surface unevenness 134, or a reference line (not shown) are initially aligned in the controller 170 to be described later. It would be desirable to control the alignment to position.

In the present invention, the upper and lower portions of the flow regulator 240 is coupled to the upper and middle mounting portions 121 and 122 as shown in FIG. It can be prevented from being separated in a state, and when the flow regulator 240 is to be separated, the flow regulator separator 140 is further formed to be separated from the main body 110 with little force.

Flow regulator separator 140 shown in Figure 7 is a hollow flow regulator separator body 141 is rotatably formed. In this embodiment, an unlocking protrusion 146, which is an unlocking means, is formed on one side of the body 141, and on the other side, an elastic body so that the flow regulator separator body 141 is rotated and restored to its original position. 147 is provided. The elastic body 147 is one end is coupled to the elastic support 147a formed in the flow regulator separator body 141, the other end is coupled to the elastic support (not shown) formed on one side inside the body to have an elastic restoring force can do. In Fig. 7, the elastic body 147 is shown as a compression coil spring, but other shapes of elastic bodies such as torsion springs may be used depending on the coupling structure.

The flow regulator separating unit 140 shown in Figure 7 is the upper and lower portions of the flow regulator separating unit body 141, respectively, the upper and lower tube connecting portions 241a, 241b of the flow regulator 240 is mounted to the support groove 145 is formed. The front of the groove 145 is formed with a locking bar 142, a locking means that can prevent the upper and lower portions of the flow regulator 240 from being separated from the main body 110. As shown in FIG. 7, the locking bar 142 provided in the upper and lower support recesses 145 is installed at opposite positions so that the flow regulator 140 can be separated by rotating the flow regulator separator 140. have.

At the end of the locking bar 142, the inclined surface of the support 143 so that the upper, lower tube connecting portion (241a, 241b) of the flow regulator 240 can be easily inserted when the flow regulator 240 is inserted for coupling It is preferable that this is formed.

On the other hand, when the flow controller 240 to separate the flow controller 240 from the body 110, the upper portion of the flow regulator 240, the upper tube is mounted on the lower tube connecting portion (241a, 241b), It is preferable that there is a separating means capable of applying a force in a direction of separating from the intermediate mounting portions 121, 122. In the present invention, as shown in FIG. 7 as an example of the separating means, the inclined surface 144 for separation is formed on one side of the support groove 145 of the upper and lower portions. At this time, it is most preferable that each separation inclined surface 144 is provided at a lower portion of the surface facing the locking bar 142 in each support recess 145.

As shown in FIGS. 7 and 8, the rotating flow regulator separating unit 140 has a dial mounting unit 130 installed on the dial mounting unit mounting unit 111 of the main body 110, and then the front of the dial mounting unit 130. Is installed on. As such, through the configuration in which the flow regulator separating unit 140 has a rotating shaft in the same direction as the dial mounting unit 130 in front of the dial mounting unit 130, it is possible to implement a convenient and miniaturized control device.

For the safe operation of the flow regulator separator 140, it is preferable that the flow regulator separator guide 112 is formed around the installation portion 111 formed in the main body 110 as shown in FIGS. . One side of the flow regulator separator guide 112 is also provided with an unlocking projection guide 113 to operate the unlocking projection 146. In addition, the upper and lower portions of the flow regulator separator guide 112, the upper, lower tube connecting portion (241a, 241b) of the flow regulator 240 is moved to the support groove 145 and the main body of the flow regulator separator 140 Upper and lower guides 114 and 115 are formed to be mounted or separated on the upper and middle mounting portions 121 and 122 of the 110.

8 (a) shows a first embodiment of the infusion flow rate control device 100, and FIG. 8 (b) shows a control device 100 equipped with a flow regulator 240.

 The dial 242 of the flow regulator 240 is placed in the initial position to block (or minimum flow) of the sap inflow, the dial mounting portion 130 is aligned to the initial position, then the body 241 of the flow regulator 240 Grasping the handle 241c formed in the dial 242 is coupled in a state facing the dial mounting portion 130. Accordingly, the upper and lower tube connecting portions 241a and 241b of the flow regulator 240 pass through the upper and lower guides 114 and 115 of the main body 110 of the locking bar 142 of the flow regulator separating unit 140. It meets the support slope 143. At this time, if the force is continuously added, the flow regulator separator 140 rotates in a clockwise direction (which is a description of the configuration shown in FIG. 8) by the movement of the support inclined surface 143, and thus the locking bar 142. The upper and lower tube connecting portions 241a and 241b of the flow regulator 240 are seated in the support recess 145 and are also fixed to the upper mounting portion 121 and the intermediate mounting portion 122. In addition, the dial 242 of the flow regulator 240 is coupled to the dial mounting portion 130 is installed behind the flow regulator separator 140. And, since the locking bar 142 is restored to its original position by the restoring force, the upper and lower tube connecting portions 241a and 241b of the flow regulator 240 are fixed to the upper and lower mounting portions 121 and 122 as well as the locking means. It is locked by the locking bar 142 and is not separated from the main body 110 without the manipulation of the unlocking protrusion 146.

On the other hand, when removing the flow regulator 240 by rotating the unlocking projection 146, which is the unlocking means in the clockwise direction, the locking bar 142 is the upper, lower tube connecting portion (241a, 241b) of the flow regulator 240 Rotation in the direction of unlocking, the separation inclined surface 144 formed on the opposite side is the direction of separating the upper, lower tube connecting portion (241a, 241b) of the flow regulator 240 and the upper, middle mounting portion (121, 122) Since the force is applied, the flow regulator 240 can be easily separated from the body 110.

9 and 10 show a second embodiment of the infusion flow rate adjusting apparatus 100 of the present invention. Most of the same as the first embodiment shown in Figs. 7 and 8, but there are differences in some configurations.

As shown in FIGS. 9 and 10, the flow regulator separating unit 140 shown in the second embodiment may allow the unlocking protrusion 146 formed at one side to perform relative movement with the body 146a and the body 146a. The configured button 146d is included.

As shown in FIG. 10 (a), the unlocking protrusion 146 shown in the second embodiment includes a body 146a formed to contact the flow regulator separator body 141, and a bottom surface of the body 146a. The formed flange 146c is included. In addition, the body 146a is provided with a button installation portion 146b to be installed so that the button 146d is movable. The stopper 146e protrudes on one side of the button 146d, and when the button 146d is pressed, the stopper 146e moves together with the button 146d. On the other hand, the button 146d is preferably coupled through the body 146a and an elastic body (not shown) so as to restore the initial position when the pressing force is removed.

In addition, as shown in Figure 9 (b) may be formed on the flange seating portion 149 so that the flange 146c is seated in the flow regulator separator body 141. In addition, the flange seating portion 149 may be provided with a coupling hole 149a or a coupling groove so that the stopper 146e of the unlocking protrusion 146 may be coupled thereto.

In addition, as shown in FIG. 9 (a), an auxiliary protrusion 148 is additionally formed in the flow regulator separator body 141 together with the unlocking protrusion 146 so as to easily separate the flow regulator 240. There may be.

Meanwhile, as shown in FIGS. 9 and 10, the flow regulator separator guide 112 is formed in front of the main body 110 in the adjusting device 100 of the second embodiment. The flow regulator separator guide 112 is provided with an unlocking protrusion guide 113. In the second embodiment, the locking groove 113a restricts the movement of the stopper 146e to the unlocking protrusion guide 113. This is further formed. As can be seen from the enlarged view of Fig. 10A, the stopper 146e formed on the button 146d is normally configured to be restricted in movement by the locking groove 113a. The stopper 146e must be separated from the locking groove 113a by pressing the button 146d, so that the unlocking protrusion 146 can be rotated.

In addition, as shown in FIG. 9 (a), the flow regulator separating part body 141 has an elastic support part 147 a formed at one rear side thereof, and the elastic body 147 is formed of the elastic support part 147 a and the main body 110. It may be coupled between. The elastic body 147 may be coupled in various forms. In the present invention, the elastic body support part 147a is inserted into the elastic body support part guide 116a formed in the main body 110 as shown in FIG. It is configured to be coupled to the elastic body 147 inside the main body 110. The elastic body 147 is sufficient if the flow regulator separator body 141 can be restored to the initial position, the elastic body 147 is also shown as a compression coil spring in Figure 9 (a), but the torsion according to the coupling structure, etc. Elastic bodies of other shapes such as springs may also be used.

As such, when the elastic body 147 is coupled to the flow regulator separator body 141, when the flow regulator 240 is coupled, the flow regulator separator body 141 is temporarily rotated and then restored to the initial position. will be. At this time, the unlocking projection 146 does not rotate because the stopper 146e is caught in the locking groove 113a formed in the unlocking projection 113. In the adjusting device 100 of the second embodiment, the unlocking protrusion 146 can be rotated only by pressing the button 146d. When the button 146d is pressed, the stopper 146e formed in the button 146d moves downward to be separated from the locking groove 113a, and is coupled to the coupling hole 149a formed in the flow regulator separator body 141. do. That is, while the button 146d is pressed, the unlocking protrusion 146 and the flow regulator separating body 141 are in a coupled state, and when the unlocking protrusion 146 rotates in this state, the flow regulator separating body 141 also rotates together. This process is used to separate the flow regulator 240 coupled to the regulator 100.

Then, when the force that applied to the button 146d in the state in which the unlocking protrusion 146 is rotated, the restoring force is applied by the elastic body 147, so that the flow regulator separator body 141 and the unlocking protrusion ( 146 is restored to the initial position, at the initial position, the release button 146d is also restored and the stopper 146e is caught by the locking groove 113a.

That is, since the adjustment device 100 shown in FIGS. 9 and 10 can rotate the flow regulator separator 146 only while pressing the button 146d formed on the unlocking protrusion 146, the flow regulator separator 146 140 is configured to more safely prevent the rotation.

On the other hand, if the auxiliary protrusion 148 is formed in the flow regulator separator body 141 as shown in Figure 9, 10, the auxiliary protrusion guide 116 is further formed in the flow regulator separator guide 112 It is desirable to have.

In addition, the body flange 141a may be formed at the rear of the flow regulator separator body 141 as shown in FIG. 9 (a). When the flange 141a is formed in the flow regulator separator body 141 as shown in FIG. 9 (a), the flow regulator separator 140 is shown in FIG. 9 (b) in the body 110. It will be desirable to form a step 119 corresponding to the installed position so that the flow regulator separator 140 can be stably coupled to the main body 110. This configuration can also be applied to the adjusting device 100 shown in the first embodiment described above. However, the coupling structure of the main body 110 and the flow regulator separation unit 140 is not limited to FIG. 9 (b), and the main body 110 and the flow regulator separation unit 140 are sufficient to be stably coupled. Do.

9 (a) and 9 (b), the mounting holes 135 are formed on the bottom surface 131 of the dial mounting unit 130. From the dial mounting unit 130, the dial mounting unit is formed of a conventional fastening member such as a bolt. It can be seen that the 130 is coupled to the dial mounting unit 111. This configuration can also be applied to the dial mounting unit 130 shown in the first embodiment. However, the coupling structure of the dial mounting unit 130 and the dial mounting unit mounting unit 111 is not limited to the structure shown in Figs. 9 (a) and 9 (b), and a structure capable of being stably coupled is sufficient.

In addition, looking at the infusion flow rate control device 100 shown in Figure 9, the main body 110 is formed in a structure in which the first body 110a and the second body (110b) is combined. Through this configuration, the dial mounting unit 130 and the flow regulator separating unit 140 may be easily coupled to the main body 110. The structure of the main body 110 can also be applied to the infusion flow rate adjusting apparatus 100 of the first embodiment.

The flow regulator separator 140 shown in Embodiments 1 and 2 of the present invention has a simple structure that performs a rotational movement, but it is a lock release means configured to perform a linear movement or a rotational movement in a different direction from the above embodiment. It may be configured as a flow regulator separator comprising a. In addition, the flow regulator separation unit 140 may be configured to operate automatically by driving a separate actuator.

In the main body 110 of the fluid flow rate control device 100 of the present invention, as shown in FIGS. 7 and 9, the user selects a target flow rate, reset selection, correlation information to be described later, and dropping barrel characteristic information. The input unit 150 is provided, and the output unit 160 for outputting information to be recognized by the user is formed.

The input unit 150 and the output unit 160 are connected to a control unit 170 formed therein, and FIG. 11 is a view illustrating a state in which the control unit 170 is connected to other components. At this time, the connection includes not only a wired connection but also a connection capable of communicating wirelessly as necessary.

The controller 170 is configured to store information, perform necessary calculations, and drive motor control, and the stored information includes correlation information between the rotational position of the dial 242 and the flow rate, and characteristic information of the drop container 210. do. In addition, it may include information on the correlation of the flow rate, the temperature, the slope and the like of the droplet as needed.

In the controller 170, the purpose is to finally control the flow rate of the sap to the target flow rate Q _t , which will be described in detail below.

In the first method, the present invention uses a method of quickly adjusting the dial 242 to the target flow rate Qt position. To this end, since the correlation between the rotational position of the dial 242 and the flow rate Q is important, this will be described in detail.

The correlation between the rotational position of the dial 242 and the flow rate Q is, as disclosed in the patent application No. 10-1327862 patented by the applicant of the present invention, the flow of the sap corresponds to laminar flow (laminar flow) , The flow rate (Q) varies depending on the rotational position of the dial (242) and the overall flow rate (C), which is a coefficient determined by the length of the internal flow path, the cross-sectional area, etc. Since it is respectively proportional to the water level difference (H) between the height difference between the can be represented by the following equation (1).

Q = C · H .............. (1)

As can be seen from the above equation (1), the flow rate (Q) is a total flow coefficient (C) that varies depending on the rotation of the dial 242 of the flow regulator 240 when the water level difference (H) is 1 Even if the water level difference (H) is not 1, it is a value corresponding to any multiple of the global flow coefficient (C), that is, a value proportional to the global flow coefficient (C). Accordingly, the scale flow rate 242b indicating that the flow rate Q _m measured while rotating the dial 242 at the specific water level difference H and the specific temperature is engraved on each scale 242a of the dial 242. Is proportional to (C).

12 (a) and 12 (b) show a change in flow rate due to rotation of the dial 242 with respect to a conventional flow regulator 240.

Figure 12 (a) shows the change in the flow rate (Q) with respect to the rotation angle of the dial, but the relationship between the rotation angle and the flow rate (Q) does not show a linear change, as shown in Equation (1) above It can be seen that at one rotation angle, the ratio between the flow rate Q and the water level difference H converges to one coefficient, that is, the overall flow rate coefficient C. The graph related to the overall flow rate coefficient (C) shown in FIG. 12 (a) is summarized through one or average of the overall flow rate coefficients (C) calculated from the flow rate (Q _m ) measured at different water level differences (H1 to H4). It will be possible to generate data on the flow coefficient (C).

12 (b) shows the change in the flow rate (Q) with respect to the flow rate for each rotation angle at the specific water level difference (H) corresponding to the above-described scale flow rate, the scale flow rate and the flow rate (Q) is shown in a linear relationship It is shown. 12 (b) shows that the flow rate Q at the level difference H1 is used as the scale flow rate.

In the conventional flow regulator, the linear relationship between the flow rate and the scale flow rate has not been recognized, but the inventor of the present invention has a proportional relationship between the flow rate (Q) and the overall flow rate coefficient (C) through Equation (1) above. When the scale 242b is displayed on the dial 242 to be equal to or proportional to the overall flow coefficient C, the flow rate Q for the scale flow rate 242b is determined. The relationship was found to be in proportional relationship with only the change of the slope even if the water level difference (H) changed. That is, the flow rate Q can be represented by a simple linear function, and the slope can be represented by a simple function that changes in proportion to the water level difference H.

In order to use the relationship between the overall flow rate coefficient C or the graduation flow rate 242b with respect to the rotational position of the dial 242, the data about the flow rate should be stored in advance in the control unit 170. Interpolation or curve fitting using experimental data for the global flow coefficient (C) calculated at a specific rotational position as shown in FIG. 12 (a) and / or experimental data for the scale flow shown in FIG. 12 (b). Each function may be created and stored in the controller 170 by a method such as curve fitting.

In the case of using the overall flow coefficient C as shown in FIG. 12 (a), the overall flow coefficient C according to the rotational angle of the flow regulator 240 may be used. have. On the other hand, in Fig. 12 (b) shown in a simple primary equation, the flow rate controller or horizontal axis in which the scale flow rate 242b of the flow rate regulator 240 is proportional to the overall flow rate coefficient C, not the rotational angle of the dial, is the total flow rate meter. This can be applied when using a value proportional to the number (C).

First, as shown in FIG. 12A, a control method using the collective flow coefficient C is as follows.

When the target flow rate is input by the input unit 150, the control unit 170 rotates the dial to any initial rotational position. At this time, the initial rotation position may be any position at which the sap flows, and the rotation position of the dial 242 corresponding to the total flow coefficient C having the same value as the input target flow rate or the input target flow rate is the initial rotation position. You can also choose. Since the value of the global flow coefficient C at each rotational position is already stored in the controller 170, the value of the global flow coefficient C _m corresponding to the initial rotational position may be obtained from the stored value. In addition, since the measured flow rate Q _m can be measured from the signal of the drop detector 330 at the initial rotation position, the flow rate Q _m and the overall flow coefficient C _m measured using Equation (1) above. ) Calculates the actual water level difference (H _m ). Next, since the actual water level difference (H _m ) was derived, the target total flow coefficient (C _t ) for administration from the actual water level difference (H _m ) to the target flow rate (Q _t ) using Equation (1) again. Derive a value. That is, since the water level difference (H _m ) does not change, the target flow rate (Q _t ) and the total flow coefficient (C _m ) corresponding to the initial rotational position and the measured flow rate (Q _m ) by using the target (1) The overall flow coefficient (C _t ) can be derived. In addition, a position corresponding to the derived total flow coefficient C _t may be obtained from the stored data, and the dial 242 may be rotated to a suitable position to find a position corresponding to the target flow rate Q _t .

Next, as shown in FIG. 12 (b), the flow rate Q measured for each rotation position of the dial 242 in the state where the water level difference H between the fluid level in the sap bag 10 and the needle 230 is constant. The control method using the scale flow data of) is as follows.

 As described above, the scale flow rate is equal to the overall flow coefficient (C) when the water level difference (H) is 1, and corresponds to any multiple of the overall flow coefficient (C) when the water level difference (H) is not 1 do.

As shown in Fig. 12 (b), the flow rate measured for each rotational position of the dial 242 in the state where the water level difference H is set to a constant value (e.g., the water level difference H1) is measured at the rotation angle position of the dial 242. After the correspondence with the graduation flow rate of, the relationship between the graduation flow rate and the flow rate can be represented by a linear graph passing through the coordinate (0, 0). This means that at a certain level difference, for example, any level difference set with the sap set 200, the ratio of the flow rate to the scale flow rate has a constant value corresponding to the slope.

When the set of fluids is set, that is, when the water level difference H is set to one value, the dial 242 is adjusted to an initial position and the measured actual flow rate Q _m and the initial scale flow rate corresponding to the initial position are measured. The ratio between the values of can be obtained by the following equation (2) that the ratio between the target flow rate Qt, which is the prescribed flow rate of the fluid treatment, and the target graduation flow rate corresponding to the target flow rate.

(Target flow rate (Q _t )) / (Target scale flow rate) = (Measured flow rate (Q _m )) / (Initial scale flow rate) ... (2)

In addition, by summarizing equation (2), the value of the target graduation flow rate can be summed up by the following equation (3).

(Target scale flow rate) = (Initial scale flow rate) x (Target flow rate (Q _t )) / (Measured flow rate (Q _m )) ... (3)

When the target flow rate Q _t is input by the input unit 150, the control unit 170 rotates the dial to an initial rotation position corresponding to an arbitrary initial scale flow rate. At this time, the initial scale flow rate may be any value, but the initial scale flow rate may be set equal to the input target flow rate Q _t . Since the value of the scale flow rate at each rotational position is already stored in the control unit 170, the value of the rotation position corresponding to the initial scale flow rate can be obtained from the stored value. In addition, the measured flow rate Q _m may be measured from the signal of the drop detector 330 at the initial rotation position. At this time, since the ratio of the target flow rate Q _t to the target scale flow rate is the same as the ratio of the measured flow rate Q _m to the initial scale flow rate, the target scale flow rate is calculated using the above equation (3). Next, the rotation position of the dial 242 corresponding to the derived target graduation flow rate may be obtained from the stored data, and the dial 242 may be rotated to a position corresponding thereto to find a position corresponding to the target flow rate Q _t .

How to rotate the dial 242 of the flow controller 240 is shown above to find the location that corresponds to the target flow rate (Q _t) it will be used even when small as well as can be used even if the target flow rate (Q _t) value is greater have.

However, if the target flow rate (Q _t ) value is extremely small, the flow path of the flow regulator 240 should be made small, and the time interval (or cycle) during which the drop falls may be several seconds or tens of seconds or more, so that it operates properly. There may be a problem that is difficult to determine whether or not there is.

Accordingly, the present inventors in the second method to solve the above problems, in the present invention, one sap drop by rotating the dial 242 at each drop time interval (or cycle) of the sap drop that can supply the target flow rate (Q _t ) A method of adjusting the target flow rate Q _t is used to make it fall.

Given the target flow rate Q _t , the volume for one drop is known so that the drop time interval (or period) of the drop can be determined. When the drop time interval of the drop is determined, the dial 242 is positioned at a position where the drop does not fall, and then the dial 242 is rotated in the direction in which the flow path is opened in accordance with the time when the drop should drop, so that one drop The flow rate can be adjusted while dropping. At this time, the dial 242 can be adjusted while rotating the dial 242 until one drop falls. In addition, one drop may be performed by using a signal measured by the drop sensor 300 as described above.

Next, after one drop falls, the dial 242 is rotated in the direction in which the flow path is closed. At this time, the dial 242 may be rotated to a position where the flow path is completely closed, and to any position where the drop does not fall at a time interval shorter than the drip drop time interval (or period) corresponding to the target flow rate Qt. It is also possible to rotate. Then, when the next dropping time comes, the dial 242 is rotated in the direction of opening the flow path until one drop falls, and then the dial 242 is rotated in the direction of closing the flow path. That is, the target flow rate Q _t is controlled while the dial 242 is rotated at every time corresponding to a desired drip drop time interval (or period).

This flow control method opens the flow path sufficiently to allow the drop to drop easily at the time when the drop should drop, and closes the flow path again after the drop drops, so that the target flow rate (Q _t ) is small. It can be used more conveniently.

As described above, the second method of controlling the rotation of the dial whenever the drop falls may be selectively used as needed by the user of the infusion flow rate adjusting device 100 in consideration of the target flow rate Q _t with the first method described above. will be.

In addition, in the second flow control method, after setting the infusion set, by checking that the drop falls while rotating the dial 242 of the flow controller 240 in the direction in which the flow path is opened, it is checked whether the infusion set is normally set. Could be used to

To the fluid flow rate control device 100 of the present invention, if necessary, a bubble sensor 125 or a temperature sensor may be added.

Bubble sensor 125 is a sensor for detecting whether bubbles are generated in the fluid flowing through the tube 220, is provided to stop the administration of the fluid when bubbles are generated. Bubbles may also be generated by the air in the internal flow path of the flow regulator 240, it may be provided in the lower tube (220b) connected to the outlet 241b of the flow regulator (240).

The temperature sensor (not shown) is a sensor for sensing the temperature of the sap flowing through the tube 220, and may be installed on the outer circumferential surface of the tube 220 in the sap set 200.

On the other hand, the control unit 170 is electrically connected to the drip sensor 300, the drive motor (not shown) that can adjust the rotation angle and direction, the initialization mode, the target flow rate is selected to select the information to be used for flow control A flow rate adjustment mode for adjusting the flow rate to flow and a monitoring mode for monitoring the flow rate after adjusting the flow rate to the target flow rate may be performed.

Next, the operation mode of the infusion flow rate adjusting device of the present invention will be described in detail.

The initialization setting mode includes a user mounting the flow regulator 240 to the fluid flow rate controller 100. First, the dial 242 of the flow regulator 240 is positioned in the initial position to block the inflow of the sap, and as described above, the flow regulator 240 is mounted on the dial mounting portion 130, the upper and lower mounting portions 121 and 122 and It is positioned to be fixed by the flow regulator separator 140.

In addition, after the drop sensor 300 is mounted on the drop container 210, the target flow rate Qt is input through the input unit 150. At this time, if necessary, the type of flow controller 240 and the type of drop container 210 may be selected, and through this, the rotational position and flow rate of the dial 242 with respect to the selected flow controller 240 from the controller 170. Correlation information and characteristics information of the selected drop container 210 are received.

When the target flow rate Q _t is input, the controller 170 adjusts the sap flow rate according to the selected control method.

First, let's take a look at the use of the second control method of controlling the rotation of the dial 242 as each drop dropped above.

When the target flow rate Q _t is input, the controller 170 calculates the drop time interval (or period) of the drop and appears on the output unit 160. At this time, the correlation of the drop volume with the drop speed or the slope or the temperature may be loaded together. If the flow regulator 240 and the type of drop container are selected, the selected correlation is also loaded. Next, the driving motor (not shown) rotates the dial 242 in the direction in which the flow path is opened so that one drop falls, and then the dial 242 is rotated in the direction in which the flow path is closed. When the next drip drop time arrives, this is repeated to control the target flow rate Q _t .

Next, let's take a look at the first control method for finding the rotational position of the dial 242 corresponding to the target flow rate Q _{t as} described above.

When the target flow rate Q _t is input, the controller 170 drives the driving motor (not shown) to adjust the dial 242 to an arbitrary initial rotational position. Here, the arbitrary initial rotational position may be set in advance, or may be a rotational position corresponding to the collective flow rate coefficient C or the graduation flow rate 242b which is the same as the target flow rate Q _t .

Then, the controller 170 selects whether to use the overall flow coefficient (C) or the scale flow rate (242b) according to the selection through the input unit 150 in the initialization setting mode, and load the corresponding data, flow rate The correlation between the rotational position and the rotational position can be loaded to prepare the flow adjustment mode. At this time, the correlation of the drop volume with the drop speed or the slope or the temperature may be loaded together. If the flow regulator 240 and the type of drop container are selected, the selected correlation is also loaded.

On the other hand, the initialization setting mode may include the step of maintaining the dial 242 of the flow regulator 240 at the maximum flow rate for a predetermined time to discharge the air present in the inner flow path of the tube 220 or the flow regulator 240. have. For example, when the air discharge menu is selected through the input unit 150 and the air discharge menu is selected, the dial 242 is adjusted to the maximum flow rate to maintain for a predetermined time to discharge the air and block the inflow of the sap. Rotate the dial 242, and then performs the flow rate adjustment mode.

The flow rate control mode is a mode performed after the user inputs the target flow rate Q _t through the input unit 150 after the initialization setting mode. When the target flow rate is input, the flow rate control unit 210 uses the motion detection unit 340. ) By rotating the dial 242 to the initial rotation position by driving the drive motor (not shown) in a state that the vibration does not occur, and then the drop interval (or sensing the drop detection unit 300) Cycle) to calculate the measured flow rate Q _m . Then, the dial 242 adjusts the target rotational position corresponding to the target flow rate by the correlation of the flow rate with respect to the rotational position of the dial 242. Drive the drive motor (not shown).

Since the signal detected by the drop detector 330 of the drop sensor 300 is a signal for detecting a falling drop, the controller 170 calculates the drop speed from the interval (or period) of the drop and adds the drop volume to the drop speed. By multiplying the measured flow rate Q _m , the measured flow rate Q _m may be calculated by selecting a drop volume corresponding to the drop rate and / or the infusion temperature. That is, an accurate measured flow rate may be calculated by reflecting the drop volume that varies depending on the drop rate and / or the sap temperature.

In this case, the measured flow rate Q _m may be calculated through one droplet velocity (or droplet interval), and the average droplet velocity (or average droplet) may be calculated through a predetermined number of continuous drops or a number of droplets within a predetermined time. Intervals). When calculating the average drop speed, the number of preset drops is usually set within the range of 2 to 5, and may be set to 5 or more depending on the drop speed or the like. Even when the measured flow rate Q _m is calculated using the average drop rate, time is required until a plurality of set drops fall only when calculating the first average drop rate, and from the second time, except for the first drop, Since the new average drop speed is calculated including the dropped drop, it is possible to calculate the new average drop speed each time one drop falls without time delay.

The target rotational position is derived by applying to Eq. (1) or Eq. (3) according to the case where the total flow coefficient (C) is used or the scale flow is used.

According to the flow rate adjusting step, the flow rate administered to the infusion set 200 by adjusting the rotational position of the dial 242 of the flow regulator 240 once after measuring the flow rate Q _m once is the target flow rate Q _t ) can be adjusted.

Next, the monitoring mode refers to a mode in which the flow rate is monitored by measuring a predetermined flow rate at a predetermined cycle or a regular flow rate after the flow rate adjustment mode. If the acceleration measured by the motion sensing unit 340 does not exceed the preset threshold between the falling drop and the drop when the predetermined period arrives, the drop detection unit 330 ), The flow rate is measured and displayed on the output unit 160. If the measured flow rate Q _m is greater than the target flow rate Qt and the difference ΔQ is greater than the preset value, the flow rate Q _m is correlated to the target flow rate Q _t by the correlation of the flow rate with respect to the rotational position of the dial 242. The target rotation position can be readjusted. The acceleration may be selected as a vertical or horizontal component or an absolute acceleration value, and the threshold of acceleration may be set in advance in the controller 170 or input as an arbitrary value.

The threshold of acceleration is determined as a value in which acceleration has a small effect on the drip interval (or period). That is, as the drop interval (or period) is changed only by the fluctuation of the drop container without changing other conditions, the drop speed is changed and the change in the measured flow rate (Q _m ) calculated therefrom is not necessary to correct the acceleration value, For example, a threshold value may be defined as an acceleration value at which a flow rate change of 5% or more precise dosing is required that a flow rate change of 3% or 1% may occur. Alternatively, it is also possible to set an acceleration value at which the swing angle of the drop cylinder does not exceed a certain angle in the normal swing, such as when only the drop of the drop cylinder is generated without an external impact or when walking. In addition, the set value of the flow rate difference ΔQ may also be set in advance to the controller 170 or may be input as an arbitrary value. At this time, the value of the flow rate difference ΔQ may be applied to a range that is not exposed to treatment, recovery, or risk of the patient even if the flow rate fluctuates with the prescribed fluid flow rate. For example, a flow rate change of 10%, when a more precise dose is required, the value of a flow rate change of 5% or 3% can be set as a threshold.

Wherein a target rotational position remediation is the initial rotational position of the dial 242, the dial 242 to get the actual flow rate (Q _m), the current position, at which time hayeoseo the flow rate is measured as a measured flow rate (Q _m), the The rotational position of the dial can be readjusted using the global flow coefficient (C). In addition, as in the case of using the graduation flow rate, the rotational position of the dial may be readjusted by calculating the target rotational position corresponding to the target flow rate Q _t by the correlation of the flow rate with respect to the rotational position of the dial 242.

The change in the flow rate Q is because the level difference H is changed and / or when the dial 242 is operated externally, and the like, so that the rotational position of the dial is adjusted so that the target flow rate Q _t is administered accordingly. will be.

On the other hand, the measured flow rate may be temporarily changed, which may appear when an acceleration exceeding a preset threshold value is set in the sap bag 10 or the drop container 210 due to vibration or shock. Since this is a temporary situation, it is not only meaningless to adjust the flow regulator 240, but also because it may be a wrong control, in the present invention is subject to the effects of temporary disturbance and the measured drop is to be excluded from the information for control These spots are divided as follows.

If the acceleration above the threshold occurs momentarily and the drop falls within a preset short time t, the falling drop is subject to additional vibration or shock from the outside before it grows normally, so that the normal drop volume It may have fallen before it could be, and in this case, it could be regarded as a dominant drop affected by temporary disturbance. At this time, the preset short time t may be set to a specific value, or may be set to a value shorter than the drop period calculated from the drop speed according to the target flow rate. On the other hand, if the drop does not occur within a preset short time t even when the acceleration above the threshold occurs momentarily, the falling drop may be considered to have grown and fall to a normal volume, and thus dominates the influence of temporary disturbance. It is not seen as a drop received.

Therefore, in the present invention, the control unit 170, the acceleration measured from the motion detection unit 340 between the falling drop and the drop exceeds a preset threshold, and after exceeding the threshold within a preset time (t) The falling drop is not used for calculating the measured flow rate Q _m , but maintains the previous flow rate display on the output unit 160 and falls after exceeding the preset time t after the threshold value is exceeded. Was determined to be normal and used to calculate the measured flow rate (Q _m ).

On the other hand, there may occur a case where the number of droplets not used for flow detection within a unit time exceeds a preset number, which means an abnormal situation in which an acceleration above a threshold occurs frequently, in which case, the sap is the correct dose to the patient. Since it is difficult to be administered as, the output unit 160 is configured to notify the user of the current abnormal situation through the warning sound and / or warning lights and / or warning messages to take action.

Finally, if the patient is sleeping or maintains a posture for a long time, the acceleration may be below the threshold value, but the fluid may be administered while the drop container 210 remains statically inclined. . Since the volume of the drop may be changed according to the inclination of the drop container 210, there is a case in which the flow rate may be measured in consideration of the change of the drop volume depending on the degree of inclination. In consideration of this, in the present invention, the controller 170 stores the volume change of the drop with respect to the inclination of the drop container 210 as data, and the acceleration measured from the motion detector 340 between the falling drop and the drop is critical. When the slope is maintained within a predetermined difference (Δθ) at a specific value without exceeding the value, the slope may be corrected when calculating the measured flow rate in consideration of the volume change of the drop with respect to the slope.

In this way, the monitoring mode maintains the flow rate being administered at the target flow rate by adjusting the dial 242 once to adjust the target flow rate even when the installation state of the infusion set is changed during the administration of the fluid.

When the controller 170 receives the reset input through the input unit 150, the controller 170 controls the driving motor to adjust the dial 242 to the infusion inflow blocking position to end the infusion administration. Reset situations can also occur in other ways. For example, the controller 170 receives the total dose through the input unit 150, and integrates the flow rate detected using the drip sensor 300 while performing the monitoring mode to the total dose. It may be configured to adjust the dial 242 to the sap inflow blocking position upon reaching. In this case, instead of the total dose, the total administration time may be input and the administration time may be checked at the time when the monitoring mode is started to adjust the dial 242 to the fluid inflow blocking position when the total administration time is reached.

Meanwhile, when the bubble sensor 125 detects a situation in which bubbles are generated by a predetermined level or more during the flow rate adjustment mode and the monitoring mode, the output unit 160 notifies the user through the warning sound and / or the warning light and / or the warning message. The reset operation, that is, the dial 242 may be adjusted to the infusion blocking position.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

The scope of the present invention is represented by the following claims, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present invention.

[Description of the code]

10: sap bag; 100: sap flow rate adjusting device; 110: main body; 111: dial mounting portion mounting portion; 112: flow regulator separator guide; 113: unlocking guide; 113a: locking groove; 114, 115: upper and lower guides; 116: auxiliary projection guide; 116a: elastic support guide; 117: a rotating plate; 118: coupling portion; 119: step; 121: upper mounting portion; 122: intermediate mounting portion; 123: fixing protrusion; 124: lower mounting portion; 125: bubble sensor; 130: dial mounting portion; 131: mounting part bottom surface; 132: mounting part side; 133: side irregularities; 134: bottom surface unevenness; 135: fastening groove; 140: flow regulator separation; 141: flow regulator separator body; 141a: body flange; 142: locking bar; 143: support slope; 144: inclined plane for separation; 145: support groove; 146: unlocking projection; 146a: body; 146b: button mounting portion; 146c: flange; 146d: buttons; 146e: stopper; 147: elastic body; 147a: elastic support; 148: auxiliary protrusion; 149: flange seat; 149a: engagement hole; 150: input unit; 160: an output unit; 170: control unit; 200: infusion set; 210: drop pain; 211: insertion needle; 212: drip; 220: tube; 220a, 220b: upper and lower tubes; 230: needle; 240: flow regulator; 241: body; 241a and 241b: upper and lower tube connections; 241c: handle; 241d: reference projection; 242: dial; 242a: scale; 242b: graduation flow rate; 242c: dial unevenness; 242d: initialization scale; 250: roller clamp; 300: drip sensor; 310: first body; 311: first groove; 312: projection; 320: second body; 321: second groove; 322: long hole; 330: drop detection unit; 331: light emitting element; 332: light receiving element; 340: motion detection unit; 350: calculating unit; 360: elastic body; H: level difference; H _m : measured water level difference; Q: flow rate; Q _m : measured flow rate; Q _t : target flow rate; C: overall flow coefficient; C _m : measured overall flow coefficient; C _t : target overall flow coefficient

The present invention relates to an infusion flow rate adjusting device is industrially available.

Claims (13)

1. In the fluid flow rate control device 100 for adjusting the fluid flow rate by rotating the dial 242 of the fluid flow rate regulator 240,

   The infusion flow rate adjusting device 100 includes a main body 110 having a driving motor (not shown) installed therein; A dial mounting unit 130 connected to the driving motor (not shown) and configured to mount and rotate the dial 242 of the flow regulator 240; A flow regulator separating unit 140 including a function of locking the flow regulator 240 mounted on the dial mounting unit 130; And a fluid flow rate control device including a control unit 170.
2. According to claim 1, The dial mounting portion 130 and the flow regulator separator 140, When the dial 142 is mounted to the dial mounting portion 130, the dial 242 is the flow regulator separator After passing through 140, the fluid flow rate control device, characterized in that configured to be mounted on the dial mounting portion (130).
3. According to claim 1, wherein the flow regulator separating unit 140 is a flow control unit 240 is a locking means for preventing the separation when it is mounted on the dial mounting portion 130; Unlocking means for operating when the flow regulator 240 is to be separated from the dial mounting portion 130; And a separating means capable of applying a force in a direction to be separated by the operation of said unlocking means.
4. According to claim 3, The flow regulator separator 140 is a hollow flow regulator separator body 141 rotatably provided; And support grooves 145 formed at upper and lower portions of the flow regulator separator body 141, respectively.

   The locking means includes a locking bar 142 formed in front of each of the support groove 145, the unlocking means is a locking projection 146 protruding on one side of the flow regulator separator body 141. And the separating means comprises an inclined surface for separation formed on one side of each of the support grooves (145) (144).
5. 5. The method of claim 4, wherein the unlocking protrusion 146 includes a button 146d having a stopper 146e formed therein to prevent the flow regulator separator body 141 from being randomly unlocked. Sap flow rate control device.
6. According to claim 1, wherein the main body 110, the input unit 150 and the output unit 160 is further formed, the control unit 170 is variable according to the rotation of the dial 242 of the flow regulator 240 The target rotational position of the dial 242 corresponding to the input target flow rate Qt by using the flow rate Q, the water level difference H, and the total flow coefficient C represented by the relationship Q = C · H. Sap flow rate control device, characterized in that it comprises a configuration for deriving.
7. The fluid set 200 of claim 6, wherein the controller 170 measures the measured flow rate Q _m at a constant or preset period and displays the measured flow rate Q _m on the output unit 160 and is connected to the flow controller 240. Rotation of the dial 242 when the acceleration of the drop container 210 is equal to or less than a preset threshold and the measured flow rate Q _m is greater than the target flow rate Q _t than the preset value Q And a configuration for re-adjusting the target rotational position of the dial 242 using the correlation between the position, the measured flow rate Q _m and the target flow rate Q _t .
8. The method of claim 6, wherein the controller 170 exceeds the acceleration threshold when the acceleration of the drop container 210 of the infusion set 200 connected to the flow controller 240 exceeds a preset threshold. After the drop falling within the preset time t is not used for the calculation of the measured flow rate Q _m , the output unit 160 maintains the previous measured flow rate Q _m .

   The fluid flow rate adjusting device according to claim 1, wherein the drop falling after exceeding a predetermined time (t) after the acceleration threshold value is included in a calculation used to calculate the measured flow rate (Q _m ).
9. The method of claim 8, wherein the controller 170 notifies through a warning sound and / or a warning light and / or a warning message when the number of spots not used for the measurement of the measured flow rate Q _m exceeds a preset number within a unit time. Sap flow rate control device, characterized in that the configuration is included.
10. The apparatus of claim 1, wherein an input unit 150 is further formed on the main body 110, and the control unit 170 derives a drop time interval of an infusion drop corresponding to the input target flow rate Q _t . ; Rotating the dial 242 of the flow regulator 240 at one time interval until one fluid drop falls; And a configuration for rotating the dial 242 reversely after the drop of the one infusion drop.
11. The apparatus of claim 1, wherein the controller is configured to measure the speed of the infusion drop and multiply the drop volume to calculate the measured flow rate Q _m .
12. According to claim 1, wherein the control unit 170 stores the relationship between the speed of the infusion drop and / or the volume change of the drop with respect to the temperature of the infusion as a data, and corrected at the time of calculating the measured flow rate (Q _m ) Sap flow rate control device, characterized in that it is included.
13. The method of claim 1, wherein the control unit 170 stores the relationship between the volume change of the drop with respect to the slope of the drop container 210 of the infusion set 200 connected to the flow regulator 240 as data,

    The acceleration between the falling drop and the drop does not exceed the threshold value and includes a configuration for correcting the slope at the time of calculating the measured flow rate Q _m when the slope is maintained within a predetermined difference Δθ at a specific value. Sap flow rate control device, characterized in that.

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