WO2010085063A2

WO2010085063A2 - Apparatus for regulating the injection of a drug solution with a fine regulation function

Info

Publication number: WO2010085063A2
Application number: PCT/KR2010/000244
Authority: WO
Inventors: 박효남
Original assignee: Park Hyo Nam
Priority date: 2009-01-22
Filing date: 2010-01-15
Publication date: 2010-07-29
Also published as: WO2010085063A3; KR100909342B1

Abstract

An apparatus for regulating the injection of a drug solution is disclosed. The apparatus for regulating the injection of a drug solution according to one embodiment of the present invention comprises a regulator valve unit, an operating unit, a valve seat, and a main body. The regulator valve unit includes a body on which a flow channel having a variable width is formed along the circumference of the outer surface thereof, and a valve gear integrally formed with the upper portion of the body to rotate together with the body. The operating unit is disposed at the side surface of the valve gear to rotate the valve gear via the control of a user. The valve seat is arranged to surround the body of the regulator valve unit, and has one side with an injection port for injecting a drug solution to the flow channel. The valve seat has an outlet port formed at the side opposite to the injection port to drain the drug solution discharged from the flow channel to the outside. The valve seat has an inner groove formed on an inner wall surface thereof corresponding to the flow channel, such that the drug solution injected from the injection port fills the inner groove. The regulator valve unit, the operating unit, and the valve seat are together surrounded by the main body.

Description

Chemical control device with fine control

The present invention relates to a chemical liquid control device, and more particularly to a chemical liquid control device that can be finely adjusted to be injected into the patient stably and accurately.

Patients admitted to hospitals or those with reduced digestive function are usually given a nutrient such as sap, drugs such as glucose, and the like. At this time, the fluid is injected into the patient through a drug control device that can be easily seen in a place such as a hospital, the drug control device is a ringer by connecting the end of the hose connected to the ringer bottle or pack, and the needle inserted into the patient's blood vessels The amount of drug in a bottle or pack controls the amount administered to the patient's blood vessels.

Currently, a ringer device commonly used in medical institutions is classified into two types, using gravity to raise a pack or a bottle containing a sap higher than an injection position to secure potential energy and inject using a pressure difference.

First, the hose connected to the needle is installed to be accommodated inside the chemical control device, by moving the pressure roller flowing in the inclined groove to press the hose to change the flow cross section of the hose to reduce or enlarge the cross-sectional area of the hose This is how the fluid flow is controlled.

However, this method has the advantage of being easy to manufacture and low cost, but the pressure roller pressurizing the hose by the restoring force of the hose made of soft synthetic resin or rubber material is gradually changed from the original pressing position, so that the cross-sectional area of the hose is expanded. As the drug is excessively administered, there is a problem that may result in an emergency situation for the patient. In addition, the error range of the flow rate of the chemical solution is large, depending on the user's skill, it is difficult to precisely adjust.

Due to this problem, the guardian or nurse must observe very carefully, and if the liquid is continuously administered, it is inconvenient to re-adjust the amount of the liquid injected when replacing the Ringer's bottle (or pack). There are also problems that are difficult to do.

Second, by configuring a micro flow path in the flow control valve of the chemical liquid control device to control the flow rate of the chemical liquid by using the flow resistance of the fluid can be controlled relatively precise flow rate compared to the first method.

However, although the accuracy of the second method is improved compared to the first method, inconvenience in use and safety deficiencies are found in part.

That is, when the user operates the operation valve for adjusting the flow rate, the operating valve rotated by the user's hand and the flow control valve for rotating the flow path are directly connected. Fine adjustment is difficult because of the force. In addition, a relatively large rotational force of the user is required when operating the operation valve. In addition, since the function for releasing air that may exist in the hose must be completely rotated to the end of the operation valve, it is inconvenient, and after setting the required flow rate, there is a problem of a medical accident due to insufficient safety devices in use.

Therefore, there is a need for the development of a chemical liquid control device that improved such problems.

The technical problem to be achieved by the present invention is to provide a chemical liquid control device that can be injected into the patient is finely controlled microscopically stable.

Chemical solution control apparatus according to an embodiment of the present invention for achieving the above technical problem is provided with a control valve unit, the operation unit, the valve seat and the main body.

The control valve part includes a body in which a flow path is set differently along the circumference of the outer surface, and a valve gear which is integrally formed on the upper side of the body and rotates together with the body. The operation unit is disposed on the side of the valve gear to rotate the valve gear by the user's operation.

The valve seat surrounds the body, and an inlet for injecting the chemical liquid into the flow passage is formed at one side, and an outlet for outflowing the chemical liquid discharged from the flow passage is formed on the opposite side of the inlet, and an inner wall surface corresponding to the flow passage is formed. The inner groove is formed is filled with the chemical liquid injected from the inlet.

The main body is integrally enclosed with the control valve unit, the operation unit and the valve seat at the same time.

The operation unit includes a reduction gear having a diameter smaller than the valve gear by being bitten by the valve gear and attached to a lower end of the reduction gear and an adjustment knob for rotating the reduction gear by the user's operation.

A stopper inserted into the thread of the reduction gear to prevent the reduction gear and the valve gear from rotating is disposed on the side of the reduction gear on the upper side of the main body.

The valve seat has a discharge control unit formed on the inner wall surface, the groove is formed of a constant depth surrounding the discharge port, the discharge control unit, the other portion of the inner wall surface and the discharge control is seated in the groove of the discharge control unit The seal is made to have the same thickness, and a sealing is formed in which a fine discharge hole is formed to finely control the amount of the chemical liquid flowing into the discharge portion.

The inner groove is formed in a uniform depth and size on the inner surface of the valve seat, except for the discharge control unit, is formed in a position corresponding to the flow path.

The flow path starts at one point of the body and travels along the outer surface of the body, and the first portion is getting larger and the width of the first portion is greater than the width of the first portion, and the length is shorter than the first portion. It has a purge portion having a.

The first portion of the flow path is fine, characterized in that the depth is gradually shallower as the width is increased, the depth of the purge portion is constant so that the pressure of the chemical liquid discharged to the outlet is kept constant Adjustable

When the chemical liquid is injected into the inlet, the chemical liquid filled in the inner groove is always maintained in a constant amount, and the amount of the chemical liquid discharged to the outlet while the flow path is rotated by the rotation of the body is controlled.

Chemical liquid control device according to the present invention,

First, by completely separating the body formed with a flow path through which the chemical liquid flows out and the operation unit operated by the user using two gears, the moment when the control valve is rotated to adjust the flow rate of the chemical liquid, It is an advantage that can solve the problem that it is difficult to exactly match the adjustment scale by the static friction force and the inertia force at the moment of the conversion.

That is, since the reduction gear of the operation part is smaller than the valve gear and the valve gear is mounted on the body in which the flow path is formed, the flow path can be easily adjusted by turning the valve gear with a small force. It allows the user to obtain a large rotation torque even with a small rotational force, so that the scale of the desired flow rate can be easily adjusted regardless of skill.

Since the deceleration gear of the operation unit rotates the large valve gear, that is, the deceleration structure has the advantage of slowly and finely adjusting the valve gear mounted on the body in which the flow path is formed.

Secondly, the existing products flow through the outlet after the chemical liquid introduced into the inlet flows in a manner that adjusts the flow rate corresponding to the groove formed in the inlet and the flow path. That is, the amount of the chemical liquid added is adjusted according to the position of the flow path of the inlet.

However, the chemical liquid control apparatus of the present invention is a method of directly controlling the outlet. Compared with the conventional method of controlling the inlet, the discharge path of the chemical liquid is very short, and there is an advantage that there is no irregular flow rate change with respect to the pressure difference with respect to the flow of the chemical liquid and the cross-sectional area of the flow path groove.

Third, the chemical liquid control device of the present invention has the advantage that it is possible to quickly perform the purge function can be filled with the chemical liquid in the hose at the same time to discharge all the air in the hose quickly when the reverse rotation at the start of the flow path.

Fourth, the chemical liquid control device of the present invention has a stopper to prevent the large gears to rotate by fixing the gear mountain of the reduction gear, there is an advantage that can prevent any accident by adjusting the chemical liquid control device.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

1 is a perspective view illustrating the overall structure of a chemical liquid control device according to an embodiment of the present invention.

Figure 2 is a perspective view of the chemical liquid control device omitted the main body of FIG.

3 is a plan view of the chemical liquid control device omitting the upper portion of the main body of FIG.

4 is a perspective view illustrating the structure of the valve seat.

5 is a plan view illustrating the structure of the valve seat.

6 is a cross-sectional view illustrating the structure of the valve seat.

It is a perspective view explaining the structure of a sealing.

8 is a plan view illustrating the structure of a seal.

It is sectional drawing explaining the structure of a sealing.

10 is a perspective view illustrating the structure of the stopper.

It is a top view explaining the structure of a stopper.

12 is a view illustrating a discharge principle of the existing chemical liquid control device.

13 is a view illustrating a chemical liquid discharge operation of the chemical liquid control device according to an embodiment of the present invention.

14 is a view for explaining the discharge principle of the chemical liquid control apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings that illustrate preferred embodiments of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 to 3, the chemical liquid control apparatus 100 according to the embodiment of the present invention includes a control valve unit 110, an operation unit 130, a valve seat 150, and a main body 170.

The control valve 110 is integrally formed on the upper side of the body 111 and the body 111 is formed with a flow path 117 is set along the circumference of the outer surface to rotate with the body 111 Gear 119. The operation unit 130 is disposed on the side of the valve gear 119 to rotate the valve gear 119 by the user's operation.

The valve seat 150 surrounds the body 111 and is formed with an inlet 151 for injecting the chemical liquid into the flow passage 117 on one side, and the chemical liquid discharged from the flow passage 117 on the opposite side of the inlet 151 to the outside. A discharge port 153 which flows out is formed. An inner groove 155 is formed on the inner wall surface corresponding to the flow path 117 to fill the chemical liquid introduced from the inlet 151.

The main body 170 is integrated with the control valve unit 110 and the operation unit 130 at the same time.

The main body 170 is divided into an upper main body 171 and a lower main body 173, and the upper main body 171 is inserted into the upper portion of the control valve unit 110 to expose upwards and a stopper described later. A hole 175 is formed to allow the 190 to be inserted and exposed upward.

The lower body 173 surrounds the side surfaces of the control valve unit 110 and the operation unit 130, and the stopper 190 is seated on one side of the upper surface.

As can be seen in detail in Figure 2, the control valve 110 is divided into a body 111 and a valve gear (119). The body 111 has a cylindrical shape, and a flow path 117 is formed to have a different width along the circumference of the outer surface. That is, the flow path 117 is formed surrounding the body 111 from one point of the body 111, and is not formed while turning the body 111 completely, but ends up short of the point where the flow path 117 starts. .

In more detail, the flow path 117 starts from one point of the body 111 and proceeds surrounding the body 111, and the width of the flow path 117 becomes larger than the width of the first part 113 and the first part 113. It has a large and constant width, and has a purge portion 115 having a length shorter than the first portion (113). In FIG. 2, the purge part 115 is illustrated in a rectangular shape, but is not limited thereto.

The valve gear 119 is integrally formed on the upper side of the body 111 and rotates together with the body 111. The upper portion of the valve gear 119 is inserted into the hole 177 of the upper body 171 to be exposed upward, the numerical value indicating the amount of the chemical liquid is printed on the upper surface 120, the amount of the chemical liquid to the user can confirm. The control valve unit 110 may be made of plastic.

In addition, as can be seen in detail in Figure 2, the operation unit 130 is bitten by the valve gear 119 to rotate the valve gear 119, and the reduction gear 131 and the reduction gear having a diameter smaller than the valve gear 119 ( 131 is attached to the lower end is provided with an adjustment knob 133 for rotating the reduction gear 131 by the user's operation.

Adjustment knob 133 is protruded to the side of the lower body 173 as shown in Figure 3 can be rotated by the user by hand. Adjusting knob 133 is shown in Figure 1 to 3 in a circular shape is not limited to the circular shape.

The lower body 173 may further include a stopper 190. The stopper 190 is inserted into a thread of the reduction gear 131 to prevent the reduction gear 131 and the valve gear 119 from rotating. The structure of the stopper 190 will be described later.

4 is a perspective view illustrating the structure of the valve seat.

5 is a plan view illustrating the structure of the valve seat.

6 is a cross-sectional view illustrating the structure of the valve seat.

It is a perspective view explaining the structure of a sealing.

8 is a plan view illustrating the structure of a seal.

It is sectional drawing explaining the structure of a sealing.

4 to 6, the valve seat 150 has a cylindrical shape surrounding the body 111, the inlet 151 for injecting the chemical liquid into the flow path 117 of the body 111 on one side is formed and the inlet On the opposite side of the 151 is formed a discharge port 153 for outflowing the chemical liquid discharged from the flow path 117.

The valve seat 150 is in close contact with the body 111 and the body 111 rotates inside the valve seat 150. The valve seat 150 is in close contact with the body 111 except for the space caused by the flow path 117 and the inner groove 155, so that the chemical liquid introduced into the inlet 151 flows in the flow path 117 and the inner groove 155. Only chilled.

The valve seat 150 has a discharge control unit 157 formed on the inner side wall, the discharge port 153 is formed into a groove of a constant depth. The discharge control unit 157 is seated in the groove of the discharge control unit 157 to make the other portion of the inner wall surface and the discharge control unit 157 the same thickness, and finely discharge the amount of the chemical liquid to the discharge unit 153 The sealing 159 is formed with a fine discharge hole 161 to be adjusted.

The inner groove 155 of the valve seat 150 is formed to have a uniform depth and size to surround the inner surface of the valve seat 150 except for the discharge control unit 157, and is formed at a position corresponding to the flow path 117. do. In the figure, the inner groove 155 is shown in a rectangular shape formed on the inner wall surface of the valve seat 150, but the shape is not limited.

10 is a perspective view illustrating the structure of the stopper.

It is a top view explaining the structure of a stopper.

The stopper 190 is inserted into a thread of the reduction gear 131 to prevent the reduction gear 131 and the valve gear 119 from rotating.

The lower body 173 has mounting pillars 191 for seating the stopper 190 on one side of the upper surface. The stopper 190 is inserted into the upper body 171 and is formed below the stopper handle 195 and the stopper handle 195 that are exposed upward and protrudes forward than the stopper handle 195 to be inserted into the thread of the reduction gear 131. And a seating portion 193 formed at both side ends of the lower portion of the stopper handle 195 and seating grooves seated on the seating pillars 191.

The seating portion 193 is press-inserted between the seating posts 191, and the insertion part 197 is inserted into the thread of the reduction gear 131 while the seating grooves move between the seating posts 191.

Then, the reduction gear 131 is not rotated by the insertion portion 197 and the valve gear 119 meshed with the reduction gear 131 is also not rotated, and the stopper 190 is adjusted after adjusting the flow rate of the chemical liquid introduced. By preventing the rotation of the valve gear 119 using anyone can prevent the medical accident can not adjust the flow rate again.

Conventional chemical liquid control device is a method of controlling the flow rate of the discharge port corresponding to the inlet and the flow path of the chemical liquid. The above figure of FIG. 12 shows the arrangement of the inlet, the flow path and the outlet. The figure below explains how the flow rate to the outlet is controlled by changing the corresponding positions of the inlet and the flow path.

That is, as the position of the inlet port moves to the right side of the flow path, the width of the flow path becomes wider, so that the amount of chemical liquid injected is increased, and the amount of chemical liquid discharged to the discharge port is also increased. At this time, since the chemical liquid introduced into the inlet flows out through the outlet after flowing to the end of the flow path along the flow path, there is a problem that an error occurs in fine control due to a problem such as uneven pressure of the chemical liquid on the flow path.

13 and 14, the chemical liquid control device 100 is a method of directly controlling the outlet. That is, the flow path of the chemical liquid discharged corresponding to the groove and the discharge port 153 of the flow path 117 is adjusted.

When the chemical liquid is injected into the inlet 151, the chemical liquid filled in the inner groove 155 is always maintained in a constant amount as shown in the upper figure of FIG. 14. That is, in the state where the chemical liquid is always constantly filled in the inner groove 155, as shown in FIG. 14, when the flow path 117 rotates by the rotation of the body 111, the fine discharge hole corresponding to the flow path 117 ( The amount of the chemical liquid discharged to the outlet 153 through 161 is adjusted. The chemical liquid is injected into the groove of the inner groove 155 and the flow path 117 so that the chemical liquid is always filled and the discharge liquid 153 moves toward the wider side of the flow path 117 so that the chemical liquid is discharged more and more.

Unlike the conventional liquid flows through the flow path to the end and discharged to the discharge port, a certain amount of the chemical liquid is discharged directly to the discharge port 153 as the amount is changed in accordance with the movement of the flow path 117, so the chemical liquid movement path is short There is almost no room for the error of fine adjustment caused by the flow and the pressure difference due to the change in the cross-sectional area of the groove of the flow path 117.

The depth of the first portion 113 of the flow path 117 becomes shallower as the width increases, so that the pressure of the chemical liquid discharged to the outlet 153 remains constant, and the depth of the purge portion 115 is constant. .

When the chemical liquid is discharged into the fine discharge hole 161, if the width of the flow path 117 is narrowed at the same flow rate, the pressure of the chemical liquid increases, and when the pressure increases, the resistance increases. This can be a factor that interferes with micromodulation. Therefore, as the width of the first portion 113 of the flow path 117 increases, the depth becomes shallower, so that the pressure of the chemical liquid can be made constant and fine adjustment is possible.

In addition, the chemical liquid control apparatus 100 according to the embodiment of the present invention does not advance the adjustment knob 133 in the direction in which the width of the groove of the flow path 117 becomes larger and the reverse direction in the opposite direction of the flow path 117 The purge part 115 may correspond to the fine discharge hole 161 so that the purge function may be quickly performed. The purge function is a function of widening and purging the purge part 115 so as to quickly discharge the chemical liquid into the hose connected to the outlet 153 to discharge air that may be in the hose and to fill the hose with the chemical liquid. The chemical liquid control device 100 of the present invention has an advantage that unlike the conventional chemical liquid control device by performing a reverse rotation of the control knob immediately perform the purge function.

As such, the chemical liquid control device 100 according to the present invention can be easily adjusted with a small force compared to the conventional chemical liquid control device with a small force, and the micro flow rate control is further enabled through the direct control of the outlet 153, and the stopper. 190 and the fuzzy function can be used to prevent medical accidents.

As described above, optimal embodiments have been disclosed in the drawings and the specification. Although specific terms have been used herein, these terms are only used for the purpose of describing the present invention and are not used to limit the scope of the present invention as defined in the meaning or claims.

Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

The present invention can be used in the field of medical devices, in particular in the field of regulators for administering a drug solution to the human body.

Claims

A control valve unit including a body having a flow path set differently along a circumference of an outer surface thereof and a valve gear formed integrally with the upper side of the body to rotate together with the body;

An operation unit disposed at a side of the valve gear to rotate the valve gear by a user's operation;

Surrounding the body, an inlet for injecting the chemical liquid into the flow path is formed on one side, the outlet is formed on the opposite side of the inlet for outflowing the chemical liquid discharged from the flow path, the inlet on the inner wall surface corresponding to the flow path A valve seat in which an inner groove is formed to be filled with the chemical liquid injected from the valve; And

Chemical control device capable of fine adjustment characterized in that it comprises a main body integrally enclosing the control valve and the operation unit at the same time.
The method of claim 1, wherein the operation unit,

A reduction gear having a diameter smaller than that of the valve gear when the valve gear is rotated by the valve gear; And

Attached to the lower end of the reduction gear is a chemical liquid control device characterized in that it comprises a control knob for rotating the reduction gear by the user's operation.
The method of claim 2,

And a stopper inserted into the thread of the reduction gear to prevent the reduction gear and the valve gear from rotating, disposed on the side of the reduction gear on the upper side of the main body.
The method of claim 1, wherein the valve seat,

On the inner wall surface, it is provided with a discharge control unit is formed in a groove of a constant depth surrounding the discharge port,

The discharge control unit, which is seated in the groove of the discharge control unit to make the other portion of the inner wall surface and the discharge control unit the same thickness, fine discharge hole for finely controlling the amount of the chemical liquid flowing into the discharge port is formed Chemical control device capable of fine adjustment, characterized in that the sealing is inserted.
The method of claim 4, wherein the inner groove,

Chemical control device capable of fine control, characterized in that formed on the inner surface of the valve seat except the discharge control unit with a uniform depth and size, and formed in a position corresponding to the flow path.
The method of claim 1, wherein the flow path,

A first portion, the width of the first portion gradually increasing along the outer surface of the body starting from one point of the body; And

Maintaining a constant width larger than the width of the first portion, and the microfluidic control device characterized in that it comprises a purge portion having a shorter length than the first portion.
The method of claim 6, wherein the first portion of the flow path,

In order to maintain a constant pressure of the chemical liquid discharged to the outlet, as the width increases, the depth becomes shallower,

Depth of the purge portion is a chemical control device capable of fine control, characterized in that the constant.
The method of claim 1,

When the chemical liquid is introduced into the inlet, the chemical liquid filled in the inner groove is always maintained in a constant amount, characterized in that the amount of the chemical liquid discharged to the outlet while the flow path is rotated by the rotation of the body is controlled Chemical liquid control device capable of fine adjustment.