KR102203629B1 - Device for regulating liquid medicine supply and medicine injection apparatus comprising the same - Google Patents

Abstract

The present invention is a preparatory work for injecting a chemical solution into a patient by removing air in the chemical solution or between the chemical solution and the chemical solution in advance by a filter for removing air provided on the discharge path inside the chemical solution supply control device, "priming" There is provided a chemical liquid supply control device capable of reducing unnecessary chemical liquid losses caused by discharging the chemical liquid to remove air in the chemical liquid or between the chemical liquid and the chemical liquid. In addition, the present invention removes the air between the chemical liquid and the chemical liquid, which may be caused by the difference in the flow rate of the chemical liquid flowing in the chemical liquid supply control device, by the air removal filter provided on the discharge path inside the chemical liquid supply control device. It provides a chemical solution supply control device that enables an increase in injection of the chemical solution and allows the user to easily adjust the injection amount of the chemical solution directly as needed.

Description

Device for regulating liquid medicine supply and medicine injection apparatus comprising the same

The present invention relates to a drug solution supply control device capable of rapidly increasing and supplying the amount of the drug solution according to the condition of the patient while continuously supplying a certain amount of the drug solution to the patient.

Specifically, the present invention is a preparatory work for injecting a chemical solution into a patient by removing the air in the chemical solution or between the chemical solution and the chemical solution in advance by the air removal filter provided on the discharge path inside the chemical solution supply control device. It relates to a chemical liquid supply control device capable of fast priming) and reducing unnecessary chemical liquid loss caused by discharging the chemical liquid to remove air in the chemical liquid or between the chemical liquid and the chemical liquid.

In addition, the present invention removes the air between the chemical liquid and the chemical liquid, which may be caused by the difference in the flow rate of the chemical liquid flowing in the chemical liquid supply control device, by the air removal filter provided on the discharge path inside the chemical liquid supply control device. It relates to a chemical solution supply control device capable of injecting an increased amount of a chemical solution and allowing a user to easily adjust the injection amount of the chemical solution directly as needed.

In addition, the present invention relates to an injection solution injection device comprising such a drug solution supply control device.

In some cases, drugs such as antibiotics, pain relievers, or anticancer drugs must be gradually injected into the patient's body for a certain period of time. At this time, it is a principle that a certain amount of the drug is continuously injected into the patient's body per hour, but depending on the patient's condition, the amount of the drug is temporarily increased and injected.

Such temporary injection of a large amount of drug or bolus injection is performed by injecting a relatively large amount of a certain amount of drug into the patient when it is necessary to rapidly increase the concentration of a drug such as an antibiotic, analgesic, or anticancer drug in the patient's body. Say that. In other words, the bolus injection increases the concentration of the drug solution in the blood so that the effect of the drug solution can act quickly.

In general, bolus injection is applied when simply injecting drugs such as antibiotics, analgesics, or anticancer drugs all at once, often through a tube that allows the drug to be slowly injected into the patient for a certain period of time. At this time, a device that is installed in the middle of the tube through which the chemical liquid flows to variously adjust the injection amount per hour or temporarily increases the supply amount of the chemical liquid is a chemical liquid injection device (referred to herein as a "medicine supply control device").

For example, Korean Patent Application Publication No. 10-2001-0103116, Korean Patent Application Publication No. 10-0516446, and International Publication No. WO 2016/137247 A2 contain a chemical solution used for bolus injection for injecting a certain amount of a chemical solution at once. An injection device is disclosed. In the above publications, one side of the tube is connected to the drug solution storage container and the other side of the tube is connected to the blood vessel of the patient through an injection needle or catheter. It discloses that the chemical solution injection amount control device) is provided separately. Such a conventional chemical injection device (medical solution injection amount control device) is to be injected into the patient by pressing the chemical solution injection button when the amount of the chemical solution is increased, so that the chemical solution stored in the chemical solution reservoir or the chemical solution bag is discharged and increases the flow rate of the chemical solution flowing in the tube. It has a structure that can increase the amount of chemicals.

However, in the prior art, before connecting the tube to a catheter or an injection needle, the chemical solution is lowered to remove air remaining in the chemical injection device or the tube. If air is introduced into the patient's body, a dangerous case may occur. Therefore, in the process of "priming", which is a preparation work for injecting the drug into the patient, the air present in the drug injection device or tube must be removed. However, since it takes time to discharge the chemical liquid for removing air in the chemical liquid or between the chemical liquid and the chemical liquid, the prior art chemical liquid injection device slows the priming process and causes unnecessary chemical liquid loss.

In addition, in the conventional chemical injection device, the speed of the chemical liquid in the continuous injection flow path of the chemical liquid and the speed of the chemical liquid in the increase injection flow path of the chemical liquid are different. The chemical liquid flowing through the continuous injection flow path is discharged directly through the outlet tube without passing through the chemical liquid reservoir or the chemical liquid bag, while the chemical liquid flowing through the incremental injection flow channel is separated from the continuous injection flow channel and stored in the chemical liquid reservoir or the chemical liquid bag and pressed. By the operation of the button, it is joined back to the continuous injection flow path from the chemical liquid reservoir or the chemical liquid bag. Accordingly, there is a high possibility that air exists between the chemical liquid flowing through the continuous injection flow path and the chemical liquid flowing through the increased injection flow path. When the air between the chemical and the chemical is introduced into the patient's body, it is not only dangerous, but also slows the injection speed of the increasing amount of the chemical in the chemical injection device.

In order to solve the above problems, conventionally, a filter cap for air control is installed at the end of the outlet tube through which the chemical solution exiting the chemical solution injection device is discharged. However, since the filter cap for air control is installed at the far end of the outlet tube, it takes a long time for the chemical liquid with air to reach this point, and there is a problem that the air is removed after the chemical liquid has flowed for a long time.

That is, although the chemical solution injection device of Korean Patent Publication No. 10-0516446 and International Publication No. WO 2016/137247 A2 as described above is an excellent technology, continuous improvement can be achieved like other excellent technologies. For example, there is no need for a chemical liquid discharge process for priming in a chemical liquid injection device, so that priming is fast, and unnecessary chemical liquid loss can be reduced, and there is a need to provide a new chemical liquid injection device capable of rapidly increasing the amount of the chemical.

Accordingly, the apparatus for controlling the supply of chemicals according to the present invention relates to a technology capable of rapidly increasing the amount of chemicals while reducing unnecessary loss of chemicals and reducing unnecessary loss of chemicals.

On the other hand, it should be understood that the matters described as background art are only for improving understanding of the background of the present invention, and are not cited as approval that it can be used as "prior art" of the present invention.

Republic of Korea Patent Publication No. 10-2001-0103116 (2001.11.23) Korean Registered Patent Publication No. 10-0516446 (2005.09.26) International Publication WO 2016/137247 A2 (2016.09.01)

The present invention has been invented to solve the problems of the prior art and provide various additional advantages. It is an object of the present invention to provide a drug solution supply control device capable of rapidly increasing and supplying the amount of the drug solution according to the patient's condition while continuously supplying a certain amount of the drug solution to a patient.

Specifically, an object of the present invention is a preparatory work for injecting a chemical solution into a patient by removing air in the chemical solution or between the chemical solution and the chemical solution in advance by an air removal filter provided on the discharge path inside the chemical solution supply control device. It is to provide a chemical liquid supply control device that can speed up "priming" and reduce unnecessary chemical liquid loss caused by discharging the chemical liquid to remove air in the chemical liquid or between the chemical liquid and the chemical liquid.

Another object of the present invention is to remove air between the chemical liquid and the chemical liquid, which may be caused by the difference in flow velocity of the chemical liquid flowing in the chemical liquid supply control device, by an air removal filter provided on the discharge path inside the chemical liquid supply control device. The object of the present invention is to provide a drug solution supply control device that enables rapid injection of a chemical solution and allows the user to easily adjust the injection amount of the chemical solution as necessary.

Another object of the present invention is to provide a chemical liquid supply control device capable of accurately and quickly changing and controlling the amount of chemical liquid injected by changing the diameter and/or the length of the internal flow path provided in the chemical liquid supply control device.

Another object of the present invention is to provide an injection solution injection device including such a drug solution supply control device.

However, the subject of the present invention as described above is exemplary, and the scope of the present invention is not limited thereby. Further, other objects and advantages of the present invention will become more apparent by the following detailed description, claims, and drawings.

The above objects are achieved by a chemical liquid supply control device provided according to the present invention.

A chemical solution supply control device provided according to an embodiment of the present invention,

With casing,

A body disposed inside the casing and having an inlet port through which a chemical solution flows from a chemical solution inlet tube extending to communicate with the chemical solution storage space, and an outlet port for discharging the chemical solution introduced through the inlet to the chemical solution outlet tube,

A continuous supply passage provided inside the body and continuously supplying a predetermined amount of a chemical solution to the chemical solution outlet tube through an outlet of the body by adjusting a flow rate of the chemical solution introduced into the inlet;

An increase supply flow path that divides and stores the chemical liquid flowing into the body through the inlet of the body, and then joins the outlet end of the continuous supply flow path to increase the amount of the chemical liquid discharged to the discharge port of the body. Wow,

Air removal provided between the outlet end of the continuous supply passage and the outlet of the body and discharging air contained in the chemical solution passing through the outlet end of the continuous supply passage or air between the chemical solution and the chemical solution to the outside of the body Includes means for use.

A chemical liquid supply control device provided according to an embodiment of the present invention is installed in the casing so as to be movable between an operating position for opening the increase supply passage and a non-operation position for closing and blocking the increase supply passage, By moving a position from the non-operating position to the working position or from the working position to the non-operating position, the chemical solution stored in the increase supply passage is supplied in an increased amount to the chemical solution outlet tube through the outlet end of the continuous supply passage It may further include a chemical liquid increase control means for blocking the.

In the chemical liquid supply control device of one embodiment of the present invention, even if air is present in the continuous supply passage and/or the increase supply passage, air contained in the chemical solution passing through the outlet end of the continuous supply passage by the air removing means or Since the air between the chemical liquid and the chemical liquid is removed, priming for the increase in the chemical liquid injection is quick. When the continuous supply passage is primed, since the air removing means removes air from the increase supply passage, priming may be completed without waiting for the chemical solution from the increase supply passage. In addition, since the air removal means removes the air in the chemical solution or between the chemical solution and the chemical solution, it becomes unnecessary for the medical staff to discard some of the chemical solution when injecting the chemical solution to the patient, thereby preventing the problem of discarding the chemical solution and losing the chemical solution. Can be minimized.

In the chemical liquid supply control apparatus of one embodiment of the present invention, the continuous supply passage comprises: a connection passage in communication with the inlet in the body, a first capillary passage in communication with the connection passage, and the first capillary passage and the outlet. And a first internal flow path for discharging the chemical liquid passed through the first capillary channel through the discharge port by connecting the inside of the body.

In the chemical supply control apparatus of one embodiment of the present invention, the increase supply flow path includes an internal flow path provided inside the body and an external flow path provided outside the body and communicating with the internal flow path.

In the chemical solution supply control apparatus of one embodiment of the present invention, the internal flow path includes a connection path in the body in communication with the inlet, a second capillary path in communication with the connection path, and a second capillary path in communication with the second capillary path. And an outlet of a second inner flow passage for guiding the chemical solution that has passed through the second capillary passage and the second capillary passage to the outer passage.

In the chemical liquid supply control apparatus of one embodiment of the present invention, the external flow path comprises a reservoir inlet pipe connecting the outlet of the second internal flow path and the reservoir inlet from the outside of the body, and a chemical liquid provided through the reservoir inlet pipe. And a reservoir having a chemical liquid storage space for storing the reservoir, and a reservoir outlet pipe for confluencing the chemical liquid discharged from the chemical liquid storage space of the reservoir through the reservoir outlet to the first internal flow path.

In the chemical liquid supply control apparatus of one embodiment of the present invention, the air removing means includes a groove formed concave on one side of the body so that a part of the continuous supply passage communicates with the outside of the body, and an opening portion of the groove A cover member coupled to the cover member to seal the groove, at least one air vent formed in the cover member to discharge air from the chemical solution passing through the groove in the continuous supply passage to the outside, and between the groove and the cover member And a filter member that is accommodated in and passes air from the chemical liquid introduced into the groove to be discharged through the air vent, and prevents leakage by not passing the chemical liquid.

In the chemical supply control apparatus of one embodiment of the present invention, the filter member may include a double filter comprising a hydrophilic filter layer and a gas-permeable-liquid-impermeable hydrophobic filter layer stacked on the hydrophilic filter layer. The chemical liquid that arrives before air is absorbed by the hydrophilic filter layer having liquid absorbing power before it reaches the gas-permeable-liquid-impermeable hydrophobic filter layer. When all of the chemical liquid introduced before air is absorbed by the hydrophilic filter layer, the next introduced air reaches the gas-permeable-liquid-impermeable hydrophobic filter layer, and after passing through the gas-permeable-liquid-impermeable hydrophobic filter layer. It is discharged to the outside of the body through the air vent of the cover member. Accordingly, the filter member having the above-described configuration can effectively remove air when the chemical liquid arrives earlier than the air, and prevent leakage of the chemical liquid.

In the chemical solution supply control apparatus of one embodiment of the present invention, the first capillary channel and the second capillary channel may have the same or different diameter and/or length, and appropriate diameter and/or length according to the desired flow rate of the chemical solution. Can be adjusted. Accordingly, it is possible to adjust the supply amount of the chemical solution by changing the diameter and/or length of the first capillary passage or the second capillary passage. The change in diameter and/or length of the first capillary path or the second capillary path may be made by replacing the first capillary tube or the second capillary tube with a capillary tube having a different diameter and/or length.

In the chemical solution supply control apparatus of one embodiment of the present invention, a finger insertion port may be provided at one end of the casing so that a user can insert and operate a finger. The body is disposed in the casing below the finger insertion port, the reservoir is disposed on the upper side of the body, and the chemical liquid increase control means is disposed on the upper side of the reservoir. The chemical liquid increase control means includes an operation button having one end disposed to protrude inward toward the center of the finger insertion port, and the other end disposed toward the upper side of the reservoir so as to pressurize the reservoir. Preferably, the chemical liquid increase control means may further include a pressing unit disposed at a lower end of the operation button to press the reservoir whenever the operation button is pressed.

In the chemical solution supply control apparatus of one embodiment of the present invention, the operation button has an upper end protruding toward the finger insertion port, and can be elastically supported by an elastic member, for example, a spring inside the casing. By pressing the operation button, the chemical liquid increase control means is moved from the non-operation position to the operation position.

By the configuration as described above, the present invention can quickly "priming", which is a preparatory work for injecting a drug solution to a patient by removing air in the drug solution or between the drug solution and the drug solution in advance, and It is possible to reduce unnecessary chemical liquid losses caused by discharging the chemical liquid to remove air between the chemical liquid and the chemical liquid. That is, according to the present invention, since the air in the chemical liquid or between the chemical liquid and the chemical liquid is removed by the air removing means on the discharge path while the chemical liquid is supplied to the chemical liquid discharge tube, priming is fast, and the chemical liquid can be discharged for priming. Since there is no need, unnecessary chemical liquid losses can be reduced.

In addition, according to the present invention, air between the chemical liquid and the chemical liquid, which may be caused by a difference in flow rate of the chemical liquid flowing in the chemical liquid supply control device, is removed by an air removing means provided on the discharge path inside the chemical liquid supply control device. Thus, it is possible to rapidly increase the injection amount of the chemical solution, and the user can easily adjust the injection amount of the chemical solution directly if necessary.

Meanwhile, the scope of the present invention is not limited by the effects as described above.

1 is an external perspective view of a state in which a user grips a chemical supply control device 200 according to an embodiment of the present invention.
2 is a front view showing the arrangement of the component parts in the casing 201 in the disassembled state of the chemical solution supply control device 200 according to an embodiment of the present invention.
3 is a side view of the body 210 of the chemical liquid supply control device 200 according to an embodiment of the present invention.
4 is a perspective view showing a mutual relationship between the body 210 and the reservoir 300 in the chemical liquid supply control device 200 according to an embodiment of the present invention.
5 is an exploded perspective view of the body 210 of the chemical liquid supply control device 200 according to an embodiment of the present invention.
6 is a cross-sectional view taken along the line'A-A' of FIG. 3 and is a longitudinal cross-sectional view of the body 210 of the chemical supply control device 200 according to an embodiment of the present invention.
7 is a cross-sectional view taken along line'B-B' of FIG. 6.
FIG. 8 is an enlarged view of a portion'C' of FIG. 7 and is an enlarged view of a means for removing air.
9 is a block diagram showing an example of an injection solution injection device 100 including the drug solution supply control device 200 of one embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. It goes without saying that the following examples of the present invention are intended to embodi the present invention and do not limit or limit the scope of the present invention. What can be easily inferred by experts in the technical field to which the present invention pertains from the detailed description and examples of the present invention is interpreted as belonging to the scope of the present invention. References cited in the present invention are incorporated herein by reference.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

1 is an external perspective view of a state in which a user grips a chemical liquid supply control device 200 according to an embodiment of the present invention. As shown in FIG. 1, a chemical liquid is introduced from a chemical liquid inlet tube 121a connected to a chemical liquid storage space (not shown) into the chemical liquid supply control device 200, and the drug introduced into the chemical liquid supply control device 200 is a chemical liquid. It is discharged to the outlet tube (121b). For reference, the chemical solution supply control device of the form extending in the longitudinal direction as shown in FIG. 1 is only one example, and the body 210, the continuous supply channel (CL), which are the core components of the present invention, as described below, is increased. Supply channels (VL1, VL2), chemical liquid increase control means 220, reservoir 300, and air removal means (224, 225, 225a, 226) can be applied to various types of cases, for example registered in Korea. It goes without saying that it is also applicable to the form disclosed in Patent Publication No. 10-0516446.

In general, medicines such as anticancer drugs, antibiotics, and pain relievers are stored in the medicine storage space. For example, a mechanical injection device that pushes the chemical liquid filled in the chemical liquid storage space by gradually moving the plunger of the syringe forward by the driving force of the motor, and a balloon-type that gradually pushes the chemical liquid filled in the chemical liquid storage space by the elastic restoring force of the balloon. Various injection liquid pumping devices, such as an injection device or a gas-generating injection device (refer to Korean Patent Publication No. 10-0507593), which pushes the chemical liquid filled in the chemical liquid storage space by gradually moving the piston forward by a gas of a constant pressure. It may be connected to the chemical liquid supply control device 200 through the chemical liquid inlet tube (121a).

As an example not limiting the present invention, FIG. 9 schematically shows the overall configuration of the injection liquid injection device 100 including the chemical liquid supply control device 200 of one embodiment of the present invention. In FIG. 9, reference numeral 100 denotes the entire injection liquid injection device, 110 denotes a gas-generating injection device which is an example of an injection liquid pumping device, and 200 denotes a chemical liquid supply control device. As an example, the injection liquid injection device 100 includes a gas-generating injection device 110 and a chemical liquid supply control device 200. The chemical liquid supply control device 200 connected to the gas-generating injection device 110 through a conduit 120 and a chemical liquid inlet tube 121a includes a conduit 120 and a chemical liquid inlet tube from the gas-generating injection device 110. The amount of the chemical solution provided through 121a) is adjusted and supplied to a catheter or an injection needle (not shown) connected to the distal cap 125 provided at the end of the chemical solution outlet tube 121b. The gas-generating injection device 110 moves the piston 114 forward by the pressure of the gas generated in the gas generating unit 112, and the piston 114 moves forward, so that the chemical liquid in the chemical liquid storage space 111 is It is supplied into the chemical liquid supply control device 200 through the conduit 120 connected to the cylinder tip 113 and the chemical liquid inlet tube 121a. However, instead of the gas generating injection device 110 described above, various injection liquid pumping devices such as a mechanical injection device or a balloon-type injection device may be connected to the chemical supply control device 200 and used.

2 is a front view showing the arrangement of components in a casing in the chemical liquid supply control apparatus 200 according to an embodiment of the present invention. As shown in Figure 2, the chemical solution supply control device 200 is installed in the casing 201 and the inner lower end of the casing 201 to flow in the chemical liquid supplied from the injection liquid pumping device through the inlet 211 to a certain amount. The body 210 is adjusted and then discharged through the discharge port 212, and a chemical liquid increase control means 220 for increasing the amount of the chemical liquid discharged through the discharge port 212 of the body 210, if necessary. .

Here, the casing 201 may be formed of a front casing and a rear casing divided in half along the thickness direction, and the front casing may be detachably assembled with respect to the rear casing. In addition, a finger insertion port 202 is formed on the upper part of the casing 201 so that a user can insert a finger for pressing the operation button 203.

A body 210 is installed under the casing 201. The structure of the body 210 is shown in FIGS. 3 to 7.

The body 210 controls the chemical liquid introduced through the inlet 211 from the injection liquid pumping device to a predetermined amount and supplies it to the outlet 212 and the chemical liquid outlet tube 121b. Optionally, the body 210 additionally supplies the chemical liquid stored in the reservoir 300 to the outlet 212 by the operation of the chemical liquid increase control means 220, and increases the amount through the outlet 212 and the chemical liquid outlet tube 121b. You can discharge the chemical liquid.

Inside the body 210, a continuous supply channel CL is provided for continuously supplying a certain amount of the chemical solution to the chemical solution outlet tube 121b through the outlet 212 by adjusting the flow rate of the chemical solution introduced into the inlet 211 ( 4, 6 and 7). As shown in FIGS. 4 and 7, the chemical liquid flows into the body 210 in the "I _CL " direction and is discharged out of the body 210 in the "O _CL " direction.

In addition, the chemical liquid increase control means 220 divides and stores the chemical liquid flowing into the body 210 through the inlet 211 of the body 210, and then stores the outlet of the continuous supply passage CL. By selectively joining the stage, it is provided with an increase supply passage (VL1, VL2) for selectively increasing the amount of the chemical liquid discharged to the discharge port 212 (see Figs. 4, 6 and 7).

In one embodiment of the present invention, the body 210 is preferably made of a lower body (210a) and an upper body (210b), the upper body (210b) is coupled to the upper end of the lower body (210a). The inlet 211 is provided in the lower body 210a, and the outlet 212 is provided in the upper body 210b. The inlet 211 is connected to the front end of the chemical liquid inlet tube 121a for guiding the chemical liquid from the injection liquid pumping device, and the chemical liquid outlet tube 121b for guiding the chemical liquid to the distal cap 125 is connected to the outlet 212 .

5 and 6, a first capillary tube 221 is inserted into the body 210, and the first capillary path 222 of the first capillary tube 221 is introduced from the inlet 211. The chemical solution is introduced into the first internal flow path 223 by capillary action. At this time, the chemical liquid is introduced into the first capillary channel 222 through the inlet 222a of the first capillary tube 221 and is adjusted to a constant flow rate while passing through the first capillary channel 222. The chemical liquid regulated at a constant flow rate exits through the outlet 222b of the first capillary channel 222 and is introduced into the first internal flow channel 223. While passing through the first capillary passage 222 and the first inner passage 223, the chemical liquid adjusted at a constant flow rate is discharged to the outside of the upper body 210b through the outlet 212, and the distal end cap through the chemical liquid outlet tube 121b. Supplied to 125.

The first capillary tube 221 is inserted into the hole of the ring 253 in an approximately “O” shape, and the “O”-shaped ring 253 in which the first capillary tube 221 is inserted is the lower body 210a and the upper part. In close contact with the empty space between the body (210b) is fitted and coupled (see FIGS. 5 and 6). In addition, a first sealing ring 251 is fitted between the inlet 222a of the first capillary tube 221 and the lower body 210a to be coupled, and between the outlet 222b of the first capillary tube 221 and the upper body 210b The second sealing ring 252 is fitted and coupled to the first capillary tube 221 and the lower body 210a to prevent leakage of the chemical liquid at the connection site between the first capillary tube 221 and the upper body 210b. Can be prevented.

6 and 7, the continuous supply channel CL includes an inlet 211, a connection channel 211a, a first capillary channel 222, a first inner channel 223, and a first inner channel. The outlet end 223a, the groove 224, the outlet 224a and the outlet 212 are sequentially connected and configured.

In addition, a specific example of the present invention is a chemical liquid increasing means capable of selectively increasing the flow rate of the chemical liquid supplied to the chemical liquid discharge passage 121b through the discharge port 212 after passing through the continuous supply passage CL. Includes.

In one embodiment of the present invention, the chemical liquid increasing means of the body 210 divides and stores the chemical liquid flowing into the body 210 through the inlet 211 of the body 210, and then the outlet end of the continuous supply channel CL. Increased supply flow paths (VL1, VL2) that increase the amount of the chemical liquid discharged to the discharge port 212 by selectively joining it, an operating position to open the increase supply flow paths (VL1, VL2), and the increase supply flow paths (VL1, VL2) ) Is installed in the casing 201 so as to be movable between non-operating positions that are closed and blocked, and the increased supply flow path (VL1, VL2) is moved from the non-operating position to the working position or from the working position to the non-operating position. It may include a chemical liquid increase control means 220 for supplying the chemical liquid stored in the increased amount to the chemical liquid outlet tube 121b through the outlet end of the continuous supply passage CL or blocking the increased supply.

As shown in FIG. 6, the increased supply passage VL includes an inner passage VL1 provided inside the body 210 and an outer passage provided outside the body 210 and communicating with the inner passage VL1. VL2). 4, the reservoir 300 is connected to the external flow path VL2. Referring to FIG. 4, the chemical liquid is introduced into the reservoir 300 through the reservoir inlet pipe 301 from the body 210 (specifically, the outlet 234 of the second inner flow path) in the "I _R " direction to store the chemical liquid. It is stored in the space 302, and the chemical liquid in the chemical liquid storage space 302 flows into the body 210 (specifically, the first internal flow path inlet 238) through the reservoir outlet pipe 303 in the "O _R "direction. do.

5 and 6, the inner flow path VL1 has a connection path 211a communicating with the inlet 211 within the body 210, and a second capillary path communicating with the connection path 211a. The outlet of the second inner flow path 232 and the second internal flow path 233 communicating with the second capillary pipe 232 and the second internal flow path for guiding the chemical liquid that has passed through the second capillary pipe 232 to the external flow path VL2 Including 234. A second capillary tube 231 is inserted into the body 210, and the second capillary channel 232 of the second capillary tube 231 takes the chemical liquid introduced from the inlet 211 into a capillary phenomenon, and the second inner flow channel 233 ). At this time, the chemical liquid is introduced into the second capillary channel 232 through the inlet 232a and is adjusted to a constant flow rate while passing through the second capillary channel 232. The chemical liquid controlled at a constant flow rate exits through the outlet 232b of the second capillary channel 232 and is introduced into the second internal flow channel 233. The chemical liquid adjusted to a constant flow rate while passing through the second capillary channel 232 and the second inner channel 233 is introduced into the outer channel VL2 through the outlet 234 of the second inner channel.

The second capillary tube 231 is inserted into the hole of the ring 253 in the shape of an “O” shape, and the ring 253 in the shape of the “O” in which the second capillary tube 231 is inserted is the lower body 210a and the upper part. In close contact with the empty space between the body (210b) is fitted and coupled (see FIGS. 5 and 6). In addition, a third sealing ring 254 is fitted and coupled between the inlet 232a of the second capillary tube 231 and the lower body 210a, and between the outlet 232b of the second capillary tube 231 and the upper body 210b The fourth sealing ring 255 is fitted and coupled to the second capillary tube 231 and the lower body 210a, thereby preventing the liquid from leaking at the connection site between the second capillary tube 231 and the upper body 210b. Can be prevented.

4 and 6, the outer flow path VL2 connects the outlet 234 of the second inner flow path 233 on the inner flow path VL1 side to the reservoir inlet from the outside of the body 210 A reservoir 300 having a pipe 301 and a chemical liquid storage space 302 for storing a chemical liquid provided through the reservoir inlet pipe 301, and a reservoir outlet from the chemical liquid storage space 302 of the reservoir 300. And a reservoir outlet pipe 303 for joining the chemical liquid discharged through the first internal flow passage 223 through the first internal flow passage inlet 238.

As shown in FIGS. 1, 2 and 6, when the chemical solution increase control means 220 is operated, the operation button 203 presses the chemical solution storage space 302 of the reservoir 300, and the chemical solution storage space 302 The chemical liquid stored in the reservoir can be merged into the first internal flow path 223 through the reservoir outlet pipe 303 to increase the amount of the chemical liquid discharged through the discharge port 212.

As shown in FIG. 2, a finger insertion port 202 may be provided at one end of the casing 201 so that a user can insert and manipulate a finger. The body 210 is disposed in the casing 201 under the finger insertion port 202, the reservoir 300 is disposed on the upper side of the body 201, and the chemical liquid increase control means 220 is disposed on the upper side of the reservoir 300. Is placed. The chemical liquid increase control means 220 has one end disposed to protrude inward toward the center of the finger insertion port 202, and the other end is an operation button 203 disposed toward the upper side of the reservoir 300 so as to pressurize the reservoir 300. ). Preferably, the chemical liquid increase control means 220 may further include a pressing unit disposed at the bottom of the operation button 203 to press the reservoir 300 whenever the operation button 203 is pressed.

The operation button 203 has an upper end protruding toward the finger insertion port 202, and may be elastically supported by an elastic member, for example, a spring inside the casing 201. By pressing the operation button 203, the chemical liquid increase control means 220 is moved from the non-operation position to the operation position. That is, when the user inserts a finger into the finger insertion port 202 of the chemical solution supply control device 200 and presses the operation button 203 in the "F" direction (see FIG. 1), the chemical solution increase control means 220 is in a non-operation position. Moved from to the operating position, and the increased amount of the chemical is injected.

For example, a coil spring is installed between a side wall provided at the lower end of the chemical liquid increase control means 200 and a lever capable of rotational movement, the coil spring applies an elastic restoring force to the fixed side wall to the lever, and the elastic restoring force of the coil spring The applied lever is rotated at a predetermined angle (for example, counterclockwise) and presses the reservoir outlet pipe 303. The lever to which the elastic restoring force of the coil spring is transmitted is blocked by pressing the reservoir outlet pipe 303 to block the flow of the chemical solution from the chemical solution storage space 302. When the user presses the operation button 203, the pressing force of the operation button 203 overcomes the elastic restoring force of the coil spring pressing the lever and rotates the lever in the opposite direction (for example, clockwise) so that the lever becomes a reservoir. It is lifted from the outlet pipe 303. At this time, the blocking of the reservoir outlet pipe 303 is released and the pressing portion of the operation button 203 presses the chemical solution storage space 302, so that the chemical solution in the chemical solution storage space 302 is in the "O _R " direction (see FIG. 4 ). ) To flow. The mutual coupling relationship, operation and function of the operation button 203, the chemical liquid increase control means 220 and the reservoir 300 are as described in International Publication No. WO 2016/137247 A2.

On the other hand, in the chemical liquid supply control device 200 of one embodiment of the present invention, the operation button 203, the chemical liquid increase control means 220, the reservoir 300, various tubes and their coupling relationship, and other parts are international As described in Publication WO 2016/137247 A2, a person skilled in the art can easily apply and configure the present invention, so a detailed description of these parts will be omitted.

In addition, the first capillary passage 222 and the second capillary passage 232 may have the same diameter and/or length, or may be different, and the diameter and/or length may be appropriately adjusted according to the flow rate of the desired chemical solution. Therefore, by changing the diameter and/or length of the first capillary channel 222 or the second capillary channel 232, the amount of the chemical solution supplied can be adjusted. The change in the diameter and/or length of the first capillary passage 222 or the second capillary passage 232 is performed by replacing the first capillary tube 221 or the second capillary tube 231 with a capillary tube having a different diameter and/or length. Can be done.

In order to remove air that may exist in the drug solution or between the drug solution and the drug solution, and to speed up'priming', which is a preparation work for injecting the drug solution to the patient, and to prevent unnecessary loss of the drug solution, the chemical solution is discharged through the outlet 212. An air removal means is provided on the discharge paths 223a, 224, 224a for discharging air contained in the chemical solution or air between the chemical solution and the chemical solution to the outside. The means for removing air is provided between the outlet end of the continuous supply passage CL and the outlet 212 of the body 210.

As shown in FIGS. 4 to 8, the air removing means includes a groove 224 formed concave on one side of the body 210 so that a part of the continuous supply passage CL communicates with the outside of the body 210 , A cover member 225 coupled to the opening of the groove 224 to seal the groove 224, and a cover member to discharge air from the chemical solution passing through the groove 224 in the continuous supply channel CL At least one air vent (225a) formed in (225), and is accommodated between the groove (224) and the cover member (225) to pass air from the chemical liquid introduced into the groove (224) and discharged through the air vent (225a) And it includes a filter member 226 that prevents leakage by not passing the chemical liquid.

In the chemical solution supply control device 200 of one embodiment of the present invention, even if air is present in the continuous supply passage (CL) and/or the increase supply passage (VL1, VL2), the outlet of the continuous supply passage (CL) by means for removing air Since the air contained in the chemical solution passing through the stage or air between the chemical solution and the chemical solution is removed, priming for increasing the amount of the chemical solution injection is quick. When the continuous supply passage (CL) is primed, the air removal means removes any air that may exist from the increased supply passages (VL1, VL2), so the priming can be completed without waiting for the chemical solution from the increased supply passages (VL1, VL2). I can. In addition, since the air removal means removes the air in the chemical solution or between the chemical solution and the chemical solution, it becomes unnecessary for the medical staff to discard some of the chemical solution when injecting the chemical solution to the patient, thereby preventing the problem of discarding the chemical solution and losing the chemical solution. Can be minimized.

In addition, the filter member 226 may be composed of a single filter, but is composed of a double filter of a hydrophilic filter layer 226a and a gas-permeable-liquid-impermeable hydrophobic filter layer 226b stacked on the hydrophilic filter layer 226a. Can (see Fig. 8). The chemical liquid that arrives before air is absorbed by the hydrophilic filter layer 226a having liquid absorbing power before reaching the gas-permeable-liquid-impermeable hydrophobic filter layer 226b. When all of the chemical liquid introduced before the air is absorbed by the hydrophilic filter layer 226a, the next introduced air reaches the gas-permeable-liquid-impermeable hydrophobic filter layer 226b, and the gas-permeable-liquid-impermeable hydrophobic filter layer ( After passing through 226b), it is discharged to the outside of the body 210 through the air vent 225a of the cover member 225. Accordingly, the filter member 226 having the above configuration can effectively remove air and prevent leakage of the chemical liquid when the chemical liquid arrives earlier than the air.

In the above, the present invention has been described with reference to the above embodiments, but the present invention is not limited thereto. Those skilled in the art will be able to make modifications and changes without departing from the spirit and scope of the present invention, and it will be appreciated that such modifications and changes also belong to the present invention.

100: injection solution injection device 110: gas generating type injection device
121a: chemical liquid inlet tube 121b: chemical liquid outlet tube
125: end cap
200: chemical liquid supply control device 201: casing
202: finger insert 203: operation button
210: body 210a: lower body
210b: upper body 211: inlet
211a: connection path 212: outlet
220: chemical liquid increase control means
221: first capillary 231: second capillary
222: 1st capillary route 232: 2nd capillary route
223: internal flowway 1 233: internal flowway 2
234: exit
300: reservoir 301: reservoir inlet pipe
302: chemical liquid storage space 303: reservoir outlet pipe
CL: Continuous supply channel
VL: Increased supply flow
VL1: internal flow path VL2: external flow path

Claims (9)

With casing,
A body disposed inside the casing and having an inlet port through which a chemical solution flows from a chemical solution inlet tube extending to communicate with the chemical solution storage space, and an outlet port for discharging the chemical solution introduced through the inlet to the chemical solution outlet tube,
A continuous supply passage provided inside the body and continuously supplying a predetermined amount of a chemical solution to the chemical solution outlet tube through an outlet of the body by adjusting a flow rate of the chemical solution introduced into the inlet;
An increase supply flow path that divides and stores the chemical liquid flowing into the body through the inlet of the body, and then joins the outlet end of the continuous supply flow path to increase the amount of the chemical liquid discharged to the discharge port of the body. Wow,
A means for removing air provided between the outlet end of the body and a point where the chemical solution from the increase supply flow path merges with the outlet end of the continuous supply flow path, and is located inside the body disposed inside the casing. The air contained in the chemical solution passing through the outlet end of the supply channel or the air between the chemical solution and the chemical solution is discharged to the outside of the body to remove, and the difference between the chemical solution velocity in the continuous supply channel and the chemical solution velocity in the increased supply channel A chemical liquid supply control device comprising a single air removing means for discharging and removing air between the chemical liquid and the chemical liquid generated by the body. The method of claim 1,
The continuous supply flow path, a connection path in communication with the inlet in the body, a first capillary path in communication with the connection path, and the first capillary path by connecting the first capillary path and the outlet inside the body And a first internal flow path for discharging the chemical liquid that has passed through the discharge port. The method of claim 2,
The increased supply flow path includes an internal flow path provided inside the body and an external flow path provided outside the body and communicated with the internal flow path. The method of claim 3,
The internal flow path is a connection path in the body in communication with the inlet, a second capillary path in communication with the connection path, a second internal flow path in communication with the second capillary path, and the second capillary path. And an outlet of a second internal flow path for guiding the chemical liquid to the external flow path. The method of claim 4,
The external flow path, a reservoir having a reservoir inlet pipe connecting the outlet of the second inner flow path and the reservoir inlet from the outside of the body, and a chemical liquid storage space for storing the chemical liquid provided through the reservoir inlet pipe, and the And a reservoir outlet pipe for joining the chemical liquid discharged through the reservoir outlet from the chemical liquid storage space of the reservoir to the first internal flow path. delete delete The method according to claim 4 or 5,
The first capillary path and the second capillary path are at least one of the same or different in diameter or length, and the amount of the chemical solution supplied is controlled by changing at least one of the diameter or length of the first capillary path or the second capillary path. Characterized in, the chemical liquid supply control device. An injection solution injection device comprising the drug solution supply control device according to any one of claims 1 to 5.

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