KR102160176B1 - Flow rate automatic regulator with remote control - Google Patents

Abstract

The present invention relates to a device that is connected to the infusion tube of an infusion set including an infusion chamber, an infusion bag, and an infusion tube to automatically control the administration of infusion, and for this purpose, the infusion tube is inserted and coupled to the infusion tube. The tube guide and the push shaft are formed on both sides of the center, and the push shaft is advanced to press the infusion tube in the direction of the tube guide to change the bend angle of the infusion tube, or by reversing the push shaft, the infusion solution It is possible to provide an automatic infusion control device including a driving unit that releases a pressure state of the tube to change the bending angle of the infusion tube.

Description

Automatic fluid control device with remote control {FLOW RATE AUTOMATIC REGULATOR WITH REMOTE CONTROL}

The present invention relates to a device for automatically controlling an infusion solution capable of remote control.

In general, in hospitals, intravenous injection therapy is used in which an injection needle is inserted and injected directly into a vein to supply fluids, drugs, or blood to the human body.

Intravenous injection therapy provides accurate and rapid effects because fluids are injected directly into the vein.

For intravenous therapy, in most hospitals, nurses use an infusion set consisting of an infusion container, infusion dropper, infusion line (tube), flow regulator, and injection needle, and insert a needle directly into the patient's vein. After calculating the infusion rate of different fluids in the prescription, the fluid infusion rate was directly adjusted with the naked eye using the flow controller of the infusion set.

However, since the nurse manually controls the infusion rate as described above, if the infusion speed of the infusion into the patient's vein is fast, the infusion may be excessive and side effects may occur. If the infusion rate is slow, the infusion rate is insufficient. There was a problem that the efficacy of the fluid was significantly reduced due to the injection.

In addition, it is difficult to accurately match the infusion rate according to the prescription due to manual control by the nurse, and the infusion rate is not constant depending on the person controlling it, and the medical staff must periodically check the remaining amount of fluid. There was this wasted problem. This is the same when injecting blood or drugs into the patient.

Therefore, in the case of injecting an infusion solution, it is important that the infusion solution is injected at an accurate rate according to the prescription.

Korean Utility Model Registration No. 20-0409394 (registered on February 15, 2006)

The present invention provides an automatic infusion control device capable of accurately adjusting the rate of infusion administration by adjusting the bending angle of the infusion tube.

In addition, the present invention provides an automatic infusion control device capable of adjusting the rate of infusion administration by adjusting the degree of bending of the infusion tube based on information sensed by the infusion sensor.

In addition, the present invention provides an automatic infusion control device capable of controlling the rate of infusion administration by controlling the degree of bending of the infusion tube based on the response after transmitting the information sensed by the infusion sensor through communication with an external device. do.

However, the technical problem to be achieved by the present embodiment is not limited to the technical problems as described above, and other technical problems may exist.

As a technical means for achieving the above technical problem, the automatic infusion control device according to an embodiment of the present invention is connected to the infusion tube of an infusion set including an infusion chamber, infusion bag, and infusion tube to automatically control the infusion administration. In the device, wherein the infusion tube is inserted into and coupled with a tube guide and a push shaft formed on both sides of the infusion tube as a center, and the infusion tube is pressed in the direction of the tube guide by advancing the push shaft. It may include a driving unit for changing the bending angle of the infusion tube or by reversing the push shaft to release a pressurized state of the infusion tube to change the bending angle of the infusion tube.

According to an embodiment of the present invention, the tube guide includes a guide body having an outer opening facing the push shaft and an inner opening opposite to the outer opening, and the guide body gradually increasing a cross-sectional area from the inner opening toward the outer opening. An inclined support portion forming an inclined surface symmetrically upward and downward in the upper and lower portions, and wing portions integrally formed on both sides of the outer opening so that the tube guide can be coupled to and supported by a guide mounting portion of the automatic infusion control device, and the groove The portion may be formed in the upper and lower portions of the outer opening to induce bending of the infusion tube to have a semi-groove shape.

According to an embodiment of the present invention, the push shaft includes a wedge portion formed at an end in a direction toward the infusion tube, a rack gear formed on the bottom surface of the push shaft integrally with the wedge portion, and a surface or an upper surface of the push shaft. And a guide protrusion formed, wherein the driving unit includes a motor and a worm gear that is rotated forward or backward by a rotation shaft of the motor, and the fluid automatic adjustment device is connected to the rack gear and the worm gear, and Accordingly, it may further include a pinion gear for transmitting the driving force of the worm gear rotated forward or reverse to the rack gear.

According to an embodiment of the present invention, the infusion automatic adjustment device is connected to a controller for applying a control signal for controlling the motor of the driving unit, and an infusion sensor that is coupled to the infusion chamber to detect information related to the infusion rate. , The controller may calculate the degree of forward or reverse rotation of the worm gear based on the information of the fluid sensor and apply the control signal corresponding thereto to the driving unit.

According to an embodiment of the present invention, the apparatus for automatically adjusting the infusion solution applies a control signal for controlling the motor of the driving unit and includes a controller having a communication module for wireless communication with an external device, and the infusion solution is coupled to the infusion chamber. After sensing information related to the administration rate, it is connected to a fluid sensor that transmits it to the external device using the communication module, and the controller transmits the information related to the fluid administration rate and responds to the control signal. It may be transmitted from the external device and applied to the driving unit.

The above-described problem solving means are merely exemplary and should not be construed as limiting the present invention. In addition to the above-described exemplary embodiments, there may be additional embodiments described in the drawings and detailed description of the invention.

According to any one of the above-described problem solving means of the present invention, the infusion tube is bent in a kink manner to change the bend angle of the infusion tube to change the infusion administration state, thereby increasing the accuracy of the infusion administration control.

In addition, according to any one of the above-described problem solving means of the present invention, the drop state information detected by the drop state detector is transmitted to an external device, such as a nurse's terminal, to notify it, thereby reducing the work load of the nurse as well as Safety accidents caused by administration can be drastically reduced.

1 is a perspective view for explaining a form in which an automatic fluid control device according to an embodiment of the present invention is coupled to an infusion tube.
2 is an exploded perspective view of the apparatus for automatically adjusting the infusion solution shown in FIG. 1.
3 is an enlarged perspective view of the tube guide shown in FIG. 2.
4 and 5 are cross-sectional views for explaining an operating relationship of the automatic fluid control device shown in FIG. 1.
6 is an enlarged perspective view of a tube guide according to the application of the present invention.
7 is a view for explaining a process in which the automatic fluid control device according to an embodiment of the present invention is connected to the fluid sensor to operate.
FIG. 8 is a diagram for explaining a process in which an apparatus for automatically adjusting infusion fluid according to an embodiment of the present invention controls a rate of administration of infusion solution through communication with an external device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms, and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the present 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.

In describing each drawing, similar reference numerals are used for similar elements.

Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component.

For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term "and/or" includes a combination of a plurality of related stated items or any of a plurality of related stated items.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined herein. do.

Hereinafter, an apparatus for automatically adjusting infusion solution according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view for explaining a form in which an automatic infusion control device according to an embodiment of the present invention is coupled to an infusion tube, and FIG. 2 is an exploded perspective view of the automatic infusion control device shown in FIG. 1, and FIG. 2 is an enlarged perspective view of the tube guide, FIGS. 4 and 5 are cross-sectional views for explaining the operating relationship of the automatic fluid control device shown in FIG. 1, and FIG. 6 is an enlarged perspective view of the tube guide according to the application of the present invention 7 is a view for explaining a process in which an automatic infusion control device according to an embodiment of the present invention is connected to an infusion sensor and operates, and FIG. 8 is a diagram illustrating an operation of an automatic infusion control device according to an embodiment of the present invention. It is a diagram for explaining a process of adjusting the rate of infusion administration through communication.

1 to 4, the fluid tube 10 according to an embodiment of the present invention may be disposed in a space between the tube guide 200 and the wedge portion 11 of the push shaft 310.

The tube guide 200 is a material that is relatively soft and slippery compared to the material of the body 100, or can withstand repeated friction, or may be relatively more worn by contact with the infusion tube 10 to protect the infusion tube 10. It can be attached to and detached from the main body 100 in a form that can be replaced.

This tube guide 200 not only can provide a space in which the infusion tube 10 can be bent by the push shaft 310, but also prevents the infusion tube 10 from being separated by the bend of the infusion tube 10. It can have a structure that can be prevented.

To this end, the tube guide 200 includes a guide body 210 having an outer opening 211 facing the push shaft 310 and an inner opening 213 opposite to the inner opening 213, as shown in FIG. 2. ) To gradually expand the cross-sectional area toward the outer opening 211, the inclined support 212 forming an inclined surface symmetrically in the upper and lower portions of the guide body 210, and the tube guide 200 ), the wing portion 220 formed integrally on both sides of the outer opening 211 so as to be supported by being coupled to the guide mounting portion 120 of the), and the upper portion of the outer opening 211 to induce bending of the infusion tube 10 It may include a semicircular groove portion 230 formed at the bottom.

In the exemplary embodiment of the present invention, the inclined support 212 may prevent the infusion tube 10 from being pushed when bent, and stably support the infusion tube 10 in a bent state to stably maintain the flow rate control. .

The push shaft 310 includes a wedge part 311 formed at an end in a direction toward the infusion tube 10, a rack gear 312 formed integrally with the wedge part 311 on the bottom of the push shaft 310, and push A guide protrusion 313 formed on a surface or an upper surface of the shaft 310 may be formed.

The motor 331 of the driving unit 330 may rotate the worm gear 332 forward or reverse through the motor rotation shaft. At this time, the worm gear 332 may transmit a driving force to the rack gear 312 through the pinion gear 320, thereby generating a reciprocating motion of the push shaft 310. Specifically, the push shaft 310 may perform forward or backward motion corresponding to the forward or reverse rotation of the pinion gear 320 coupled to the rack gear 312. At this time, it is possible to pressurize the infusion tube 10 with the wedge portion 311 having a shape whose cross-section decreases toward the end of the push shaft 310.

When the push shaft 310 moves forward, the push shaft 310 bends the infusion tube 10 in a V-shape inside the tube guide 200 to relatively reduce the fluid cross-sectional area of the infusion tube 10 so that the infusion tube 10 It is possible to reduce the flow rate of the fluid passing through.

On the other hand, when the push shaft 310 moves backward, the push shaft 310 moves away from the infusion tube 10 so that the infusion tube 10 is restored to its original state, and as a result, the fluid cross-sectional area of the infusion tube 10 The flow rate of the fluid flowing through the infusion tube 10 can be adjusted by making it substantially larger than in the folded state.

In addition, the guide protrusion 313 of the push shaft 310 may be moved as if sliding in the bed slit 341 of the shaft bed 340 that guides the push shaft 310 to be linearly movable. Accordingly, the forward or backward motion of the push shaft 310 may be stably performed along the length and central axis direction of the push shaft 310 without twisting or shaking by the guide protrusion 313 and the bed slit 341.

In addition, a shock absorbing part 342 made of a cushion material is provided at the rear end of the shaft bed 340 to reduce impact or noise caused by contact during a backward movement of the push shaft 310.

Meanwhile, according to another embodiment of the present invention, as shown in FIG. 6, the tube guide 200a may further include a pair of side guide grooves 240 formed on both inner surfaces of the guide body 210. .

The side guide groove part 240 is shaped in a wedge-shaped groove shape to prevent shaking of the end of the wedge part 311 and prevent fluctuations in the bending position of the infusion tube 10 at an accurate pressurized position, thereby further reducing the fluid flow rate. It can be precisely adjusted.

In the automatic infusion control apparatus as described above, the driving unit 330 may operate in conjunction with the infusion sensor 400 connected to the infusion chamber (405 in FIG. 7 ). To this end, the apparatus for automatically adjusting the infusion solution according to the embodiment of the present invention may further include a controller 500 connected to the infusion sensor 400.

The infusion sensor 400, as shown in FIG. 7, through a light source 410 that irradiates light to the dropped droplets, a reflective unit 420 for reflecting light from the light source, and a reflective unit 420 It includes a sensor 430 for detecting reflected light, and after detecting a drop dropped in the infusion chamber 405 by using the light detected by the sensor 430, an electric signal corresponding thereto can be output. have.

First, in the embodiment of the present invention, the light source 410 is for generating and irradiating light such as an LED, and it is preferable to maintain a constant intensity of light, and it is preferable to use green light.

The reflector 420 is provided with a reflective surface for condensing light while refracting and reflecting light transmitted through the light source 410 to the droplet, and may be a concave mirror, but is not limited thereto.

The sensor 430 must be able to detect light and change the output signal according to the amount of light, and the optical fiber 432 and the optical fiber 432 for receiving the light from the light source 410 reflected from the reflector 420 ) May include a lens 434 for condensing the light of the light source 410 transmitted from it.

The light source 410 and the sensor 430 as described above are located on one side outside from the radial direction of the infusion chamber 405, and the reflection part 420 is on the other side of the infusion chamber 405 from the radial direction. It is preferable that the infusion sensor 400 is coupled to a predetermined portion of the infusion chamber 405 so as to be positioned. At this time, the light source 410 is irradiated so as to transmit at least a portion of the dropped drop, and the sensor 430 must be positioned spaced apart from the light source 410.

Through the combination as described above, the light source 410 irradiates light into the infusion chamber 405, and the irradiated light is reflected and concentrated by the reflecting unit 420 to reach the sensor 430.

On the other hand, the sensor 430 may generate an electric signal corresponding to the incoming light and provide it to the controller 500.

The controller 500 calculates the infusion rate based on the electrical signal output from the sensor 430 of the infusion sensor 400, and the target infusion rate based on the difference between the preset target infusion rate and the calculated infusion rate. A control signal for reaching the dose rate, that is, a control signal for operating the motor 331 of the driving unit 330 may be generated.

As described above, the motor 331 of the driving unit 330 to which the control signal is applied may rotate the worm gear 332 forward or reverse through its motor rotation shaft. Accordingly, the worm gear 332 may transmit a driving force to the rack gear 312 through the pinion gear 320, and as a result, the push shaft 310 may perform forward or backward movement through a reciprocating motion.

In accordance with the forward motion of the push shaft 310, the infusion tube 10 is pressed by the wedge part 311 of the push shaft 310 to be bent at a predetermined bending angle. Accordingly, the fluid in the infusion tube 10 By relatively reducing the cross-sectional area, the flow rate of the fluid passing through the infusion tube 10 can be reduced.

In this case, the bending angle may be adjusted according to the adjustment signal. That is, the angle of bending may be adjusted according to the degree of advancement of the push shaft 310. Accordingly, the control signal may include a degree value of forward or reverse rotation of the worm gear 332. Depending on this degree value, the push shaft 310 may move forward or backward to adjust the bending angle of the infusion tube 10.

According to the embodiment of the present invention as described above, it has been described as an example that the infusion automatic control device controls the infusion tube 10 in order to control the infusion rate in connection with the infusion sensor 400, but the external device and In conjunction with the control signal input from an external device, the automatic infusion control device can adjust the infusion rate. Specifically, as shown in FIG. 8, the controller 500 of the automatic infusion control device includes an external device such as a nurse-side terminal 600, a hospital control server 610, and an automatic infusion control device and an infusion detector 400. It may further include a communication module 510 for connecting through a wireless communication network.

The communication module 510 may include at least one or more circuits for performing Wi-Fi, WiBro, Bluetooth Le, ZigBee communication, RF communication, etc., and transmits an electrical signal output from the sensor 430 of the infusion sensor 400 Modulated into a form capable of being transmitted through a wireless communication network and transmitted to the nurse's terminal 600 or the hospital control server 610, the control signal may be received in response thereto.

In addition, the nurse's terminal 600 and the hospital control server 610 are a recording medium stored in a form in which an application for fluid control for generating and transmitting a control signal based on the electric signal sensed through the fluid detector 400 is executable ( 620) may be further included. Here, the infusion control application provides a control signal for adjusting the infusion rate based on the type of infusion set to which the infusion automatic control device is connected and the state information of the patient receiving the infusion and the electrical signal sensed through the infusion sensor 400. After creation, it can be transmitted to an automatic infusion control device through a wireless communication network.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that it can be easily modified into 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 illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

10: infusion tube
100: main body
110: casing
120: guide mounting portion
130: cover
200, 200a: tube guide
210: guide body
211: outer opening
212: inclined support
213: inner opening
220: wing part
230: Semicircle groove
240: side guide groove
300: pressurization part
310: push shaft
320: pinion gear
330: drive unit
340: shaft bed

Claims (5)

In the device capable of automatically controlling the infusion administration by being connected to the infusion tube of an infusion set including an infusion chamber, infusion bag, and infusion tube,
Tube guides and push shafts formed on both sides around the infusion tube so that the infusion tube can be inserted and coupled,
Advance the push shaft to pressurize the infusion tube in the direction of the tube guide to change the bending angle of the infusion tube, or reverse the push shaft to release the pressurized state of the infusion tube to adjust the bending angle of the infusion tube. It includes a driving unit to change,
The tube guide,
A guide body having an outer opening facing the push shaft and an inner opening opposite to the push shaft,
An inclined support portion forming an inclined surface symmetrically up and down on the upper and lower portions of the guide body so as to gradually increase the cross-sectional area from the inner opening toward the outer opening;
Wings integrally formed on both sides of the outer opening so that the tube guide can be coupled to and supported by a guide mounting portion of the automatic infusion control device,
Automatic infusion control device comprising a groove having a semi-groove shape formed in the upper and lower portions of the outer opening to induce bending of the infusion tube.
delete The method of claim 1,
The push shaft,
A wedge portion formed at an end in a direction toward the infusion tube,
A rack gear formed on the bottom surface of the push shaft as an integral part of the wedge part,
And a guide protrusion formed on a surface or an upper surface of the push shaft,
The driving unit,
It includes a motor and a worm gear that rotates forward or backward by the rotation shaft of the motor,
The automatic infusion control device,
The apparatus for automatically adjusting fluid fluid further comprises a pinion gear connected to the rack gear and the worm gear and configured to transmit a driving force of the worm gear that is rotated forward or backward according to the driving of the motor to the rack gear.
The method of claim 3,
The automatic infusion control device,
A controller that applies a control signal for controlling the motor of the drive unit,
It is coupled to the infusion chamber and connected to the infusion sensor for detecting information related to the infusion rate,
The controller,
After calculating the degree of forward or reverse rotation of the worm gear based on the information of the infusion sensor, the automatic infusion control device applies the control signal corresponding thereto to the driving unit.
The method of claim 3,
The automatic infusion control device,
A controller having a communication module for applying a control signal for controlling the motor of the driving unit and for wireless communication with an external device,
It is coupled to the infusion chamber to sense information related to the infusion rate and is connected to the infusion sensor that transmits it to the external device using the communication module,
The controller,
After transmitting information related to the infusion rate, the control signal is received from the external device and applied to the driving unit in response thereto.

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