KR102572870B1 - Apparatus for Infusing medical liquid - Google Patents

Abstract

One embodiment of the present invention has a needle module having one or more needle parts formed to be injected into the user's body, and an inner space to store a chemical solution delivered to the needle module, and the inner surface of the inner space has a surface-treated form. a chemical storage unit comprising; and a drive unit connected to the liquid medicine storage unit to transfer the liquid medicine from the liquid medicine storage unit to the needle module.

Description

Medicine liquid injection device {Apparatus for Infusing medical liquid}

Embodiments of the present invention relate to a drug solution injection device.

A drug injection device such as an insulin injection device is used to inject a drug solution into a patient's body, which is sometimes used by professional medical staff such as doctors and nurses, but in most cases is used by ordinary people such as patients themselves or their guardians. . In addition, since the drug solution injected through the drug injection device is often required to be taken by the patient for a long period of time, the patient suffers from having the needle of the drug injection device inserted several times.

Such a drug injection device has a needle through which a drug solution is discharged, and after the needle is inserted into a patient's body, the drug solution may be injected into the patient's body once or multiple times.
Information related to such a liquid injection device is disclosed in Patent Publication No. 10-2019-0026730 and the like.

On the other hand, in order to increase the effect through the patient's drug solution injection, the drug solution injection device needs to control the precise injection of the drug into the patient's body. For example, there is a limit to sequentially and precisely injecting the chemical solution one or more times.

Embodiments of the present invention provide a drug solution injection device with improved precise control characteristics of drug solution injection.

One embodiment of the present invention has a needle module having one or more needle parts formed to be injected into the user's body, and an inner space to store a chemical solution delivered to the needle module, and the inner surface of the inner space has a surface-treated form. a chemical storage unit comprising; and a drive unit connected to the liquid medicine storage unit to transfer the liquid medicine from the liquid medicine storage unit to the needle module.

In this embodiment, the chemical storage unit includes an outer portion defining a region of an inner space, the outer portion includes an outer surface and a chemical liquid facing area facing the outer surface, and the surface-treated form is applied to the chemical liquid facing area. can be formed

In this embodiment, the inner surface of the inner space of the chemical storage unit and the outer surface of the chemical storage unit may be formed to have different surface shapes.

In this embodiment, the roughness value of the inner surface of the inner space of the chemical storage unit may be different from the roughness value of the outer surface of the chemical storage unit.

In this embodiment, the roughness value of the inner surface of the inner space of the chemical storage unit may be formed to be greater than the roughness value of the outer surface of the chemical storage unit.

In this embodiment, the inner surface of the inner space of the chemical storage unit may be formed to include a plurality of protruding parts and space parts.

In the present embodiment, a cover portion formed to cover the chemical storage portion, the needle module, and the driving portion may be further included.

Other aspects, features and advantages other than those described above will become apparent from the following drawings, claims and detailed description of the invention.

The chemical solution injection device according to the present embodiment can improve precise control characteristics of chemical solution injection.

1 is a perspective view schematically showing a chemical solution injection device according to an embodiment of the present invention.
FIG. 2 is a schematic plan view of the chemical solution injection device of FIG. 1 .
FIG. 3 is a view showing a modified example of FIG. 2 .
4 is a cross-sectional view taken along line IV-IV of FIG. 2 .
5 is an enlarged view of K in FIG. 4;
6 to 8 are views showing modified examples of FIG. 5 .
9 is a perspective view schematically showing a chemical solution injection device according to another embodiment of the present invention.
FIG. 10 is a schematic plan view of the chemical solution injection device of FIG. 9 .
11 is a cross-sectional view taken along line XI-XI of FIG. 10 .
12 is an enlarged view of K in FIG. 11;
13 is a perspective view schematically showing a chemical solution injection device according to another embodiment of the present invention.
Fig. 14 is a schematic front view of the chemical solution injection device of Fig. 13;
FIG. 15 is a schematic plan view of the drug injection device of FIG. 13 with a cover removed for convenience of description.
FIG. 16 is a cross-sectional view taken along line XVI-XVI of FIG. 15 .
17 is an enlarged view of K in FIG. 16;
18 is an exemplary view illustrating a process of injecting a chemical solution using the chemical solution injection device according to the present embodiment.

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and methods for achieving them will become clear with reference to the embodiments described later in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when describing with reference to the drawings, the same or corresponding components are assigned the same reference numerals, and overlapping descriptions thereof will be omitted. .

In the following embodiments, terms such as first and second are used for the purpose of distinguishing one component from another component without limiting meaning.

In the following examples, expressions in the singular number include plural expressions unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have mean that features or components described in the specification exist, and do not preclude the possibility that one or more other features or components may be added.

In the drawings, the size of components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to the illustrated bar.

In the following embodiments, the x-axis, y-axis, and z-axis are not limited to the three axes of the Cartesian coordinate system, and may be interpreted in a broad sense including these. For example, the x-axis, y-axis, and z-axis may be orthogonal to each other, but may refer to different directions that are not orthogonal to each other.

When an embodiment is otherwise implementable, a specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order reverse to the order described.

1 is a perspective view schematically illustrating a chemical solution injection device according to an embodiment of the present invention, FIG. 2 is a schematic plan view of the chemical solution injection device of FIG. 1, and FIG. 3 is a view showing a modified example of FIG. 2 .

4 is a cross-sectional view taken along line IV-IV in FIG. 2, and FIG. 5 is an enlarged view of line K in FIG.

Referring to FIGS. 1 and 2 , the liquid medicine injection device 100 of this embodiment may include a liquid medicine storage unit 110 , a driving unit 120 and a needle module 130 .

The drug solution injection device 100 may be disposed adjacent to the skin of a person to whom the drug solution is injected, for example, and may inject the drug solution in the injection direction (DIS).

Also, as an optional embodiment, the drug solution injection device 100 may be mounted on the user's body.

The drug injection device 100 may include a cover 101 , and the cover 101 may be formed to cover the drug storage unit 110 , the driving unit 120 and the needle module 130 .

For convenience of explanation, FIG. 2 shows a state in which the cover 101 of FIG. 1 is removed.

Referring to FIG. 2 , the drug injection device 100 may include a base 102 , and the base 102 may be formed to face the cover 101 .

As an optional embodiment, the cover 101 and the base 102 may be connected to each other to become a housing of the drug injection device 100 .

Although not shown, as an alternative embodiment, the cover 101 may include an opening, and a button may be disposed to correspond to the opening, and the button may correspond to the needle module 130 . A button corresponding to the needle module 130 is formed to be pressed or rotated by the user, and movement of the needle module 130 may be possible through the button.

The liquid medicine storage unit 110 may be formed to accommodate one or more types of liquid medicine. For example, the liquid medicine storage unit 110 may accommodate the liquid medicine so as to inject the liquid into a person at one time. Also, as another example, the chemical storage unit 110 may accommodate the chemical solution so as to continuously inject the chemical solution multiple times.

The liquid medicine storage unit 110 may include a tank-shaped container to store the liquid medicine. The chemical storage unit 110 may contain a waterproof material capable of accommodating the chemical solution, for example, a plastic-based material, or may be formed of various other materials.

As an optional embodiment, the chemical storage unit 110 may contain glass, metal or silicon.

As shown in FIG. 2 , the chemical storage unit 110 includes one or more outer parts 111 , and the liquid medicine may be accommodated in an inner space formed inside the outer part 111 . For example, the outer portion 111 may be the first outer portion 111 facing the cover 101 .

The drug solution may be of various types, and may include an insulin-based drug solution for diabetic patients, other various types of drug solutions for the pancreas, heart drugs, and the like.

As an optional embodiment, the liquid medicine storage unit 110 may be replenished with liquid medicine through a filling passage (not shown).

In addition, although not shown, the chemical storage unit 110 may include one or more moving parts (not shown) in a space where the chemical liquid is accommodated inside the outer part 111, and such a moving part can effectively move the chemical liquid, Specifically, the chemical solution accommodated in the liquid medicine storage unit 110 can be easily transferred to the needle module 130 to be described later.

The inner space of the first outer portion 111 of the chemical storage unit 110 will be described in more detail with reference to FIG. 4 to be described later.

The drive unit 120 can deliver the drug solution stored in the drug storage unit 110 to the needle module 130 and easily inject the drug solution from the needle module 130 into the skin of a target for injection, for example, a person.

As an optional embodiment, the driving unit 120 may include a pump, and the chemical solution stored in the chemical storage unit 110 may be transferred toward the needle module 130 by a predetermined amount through pumping of the pump.

Although not shown, the driving unit 120 may be connected to a power source.

In addition, as an optional embodiment, the driving unit 120 is electrically connected to a controller (not shown), and the driving unit 120 may control injection of the liquid medicine through the control of the controller.

The drive unit 120 may be any type of pump having a power to suck in the chemical solution and to discharge the chemical solution by electricity. For example, all types of pumps such as mechanical displacement type micropumps and electromagnetic motion type micropumps can be used. The mechanical displacement type micropump is a pump that uses the movement of solids or fluids such as gears or diagrams to create a pressure difference to induce fluid flow. Diaphragm displacement pumps, fluid displacement pumps ), and rotary pumps. An electrokinetic micropump is a pump that uses energy in the form of electricity or magnetism directly to move a fluid, and includes an electrohydrodynamic pump (EHD), an electroosmotic pump, and a magnetohydrodynamic pump ( Magneto hydrodynamic pump) and electro wetting pump.

The needle module 130 may include at least one needle part ND. The needle part (ND) has an empty interior, and the drug solution of the drug storage unit 110 can be injected into the drug solution injection target through this internal space.

A connection part TN may be disposed between the needle module 130 and the chemical solution injection part 110 . The connection part TN may include at least a delivery area so that the medicine solution of the medicine solution injection unit 110 is delivered to the needle module 130, and may include, for example, a hollow tube shape.

The connection part TN may be formed in various shapes, and may include, for example, a flexible tube shape.

The drive unit 120 of the present embodiment is connected to the liquid medicine storage unit 110 so that the liquid medicine stored in the liquid medicine storage unit 110 can be easily transferred to the needle module 130 through the connection part TN.

Also, although not shown, as an optional embodiment, a sensor (not shown) may be further positioned between the cover 101 and the base 102 or on at least one surface.

Such a sensor (not shown) may be provided to sense whether the needle module 130 is adjacent to the needle through-hole formed in the base 102 .

In addition, these sensors (not shown) may be electrically connected to a controller (not shown) that controls the driving unit 120 described above.

FIG. 3 is a view showing a modified example of FIG. 2 .

Referring to FIG. 3 , the drug injection device 100' may include a drug storage unit 110', a driving unit 120', and a needle module 130'.

A first connection unit TN1 may be disposed between the chemical storage unit 110' and the driving unit 120', and at least the first connection unit TN1 allows the chemical solution of the chemical storage unit 110' to drive unit 120'. ) direction, for example, may include a hollow tube shape. The first connection part TN1 may be formed in various shapes, and may include, for example, a flexible tube shape.

A second connection part TN2 may be disposed between the driving part 120' and the needle module 130', and the second connection part TN2 allows at least the chemical liquid to flow from the driving part 120' to the needle module 130'. It may include a delivery area to be delivered to, for example, it may include a hollow tube shape. The second connection part TN2 may be formed in various shapes, and may include, for example, a flexible tube shape.

4 is a cross-sectional view taken along line IV-IV in FIG. 2, and FIG. 5 is an enlarged view of line K in FIG.

Referring to FIGS. 4 and 5 , an inner space of the liquid medicine storage unit 110 is shown. The inner space of the liquid medicine storage unit 110 may be defined as the inner space of the outer parts 111 and 112 .

For example, the chemical storage unit 110 may include a first outer portion 111 and a second outer portion 112 that face each other.

The first outer part 111 and the second outer part 112 may be formed to face each other, for example, the first outer part 111 faces the cover 101 and the second outer part 112 faces the base 102. can be headed

An inner space may be formed to face the first outer part 111 and the second outer part 112, and the inner space may be specifically defined by the inner surface corresponding to the first outer part 111 and the second outer part 112. there is.

Referring to FIG. 5 , the first outer portion 111 may include an outer surface area 111a and a liquid medicine facing area 111b.

The outer surface area 111a may correspond to the outer surface of the first outer portion 111, and the liquid medicine facing area 111b defines an inner space in which the liquid medicine is accommodated in the liquid medicine storage unit 110, faces the liquid medicine in at least one area, and at least At one point in time, it may come into contact with the liquid medicine.

The liquid facing area 111b may include a surface-treated area. As an optional embodiment, the liquid medicine facing region 111b may include one or more protruding parts pt and a space part gv adjacent thereto. For example, the liquid medicine facing region 111b may include a plurality of protrusions pt, and a space gv may be formed between the adjacent protrusions pt.

As an optional embodiment, the protrusion part pt may include a plurality of protrusion parts pt having at least different sizes and shapes.

The chemical liquid facing region 111b has a surface treatment area, for example, a region including a plurality of protrusions pt, so that when the chemical liquid is accommodated in the chemical liquid storage unit 110, the chemical liquid storage unit 110 emits at least light. In the case of a transparent material, the shape of the surface of the chemical liquid facing region 111b can be visually recognized, and through this, it is possible to easily determine whether or not the chemical liquid has been received or the amount of the chemical liquid.

In addition, the chemical liquid facing region 111b may have a surface treatment area, for example, a region including a plurality of protrusions pt, so that the chemical liquid can be more efficiently accommodated in the chemical liquid storage unit 110 by increasing the surface area.

In addition, as an optional embodiment, when a moving part for easy delivery of the chemical liquid stored in the chemical storage unit 110 is included, the moving part includes a surface treatment area of the liquid facing area 111b, for example, a plurality of protrusions pt. direction, and by improving the frictional force between the moving part and the liquid medicine facing area 111b, slipping of the moving part is reduced or prevented, thereby facilitating effective and precise delivery of the liquid medicine through the moving part.

The protrusion pt has a fine shape and may be formed to reduce unnecessary residual of the chemical liquid and to reduce damage or unnecessary interference to a moving part that may be disposed therein.

For example, the protrusion pt may have a size of several micrometers or less, and may have a size of 0.1 to 10 micrometers as a specific example.

Through this, the liquid facing area 111b may have a surface roughness value, for example, 0.1 to 5 micrometers, and as a specific example, 0.2 to 1 micrometer.

The liquid facing region 111b may be formed to include a plurality of protrusions pt in various ways, for example, it may be formed by treating the surface with a physical method or by using a chemical solution.

As an optional embodiment, the outer surface area 111a and the liquid facing area 111b may have different surface shapes.

For example, the outer surface region 111a and the liquid facing region 111b may have different roughnesses. As a specific example, the outer surface area 111a and the liquid facing area 111b may have different surface roughness.

As an optional embodiment, the surface roughness of the liquid facing area 111b may be greater than that of the outer surface area 111a.

Through this, the chemical storage unit 110 is formed of a material that transmits light, and the surface characteristics of the chemical liquid facing region 111b can be visually recognized, and the received state of the stored chemical liquid and the received amount can be confirmed.

Although not shown, the liquid facing area of the second outer portion 112 facing the first outer portion 111 may also have a surface-treated area, for example, a plurality of protrusions. As the same as above, detailed descriptions are omitted.

6 to 8 are views showing modified examples of FIG. 5 .

Referring to FIG. 6 , the liquid medicine facing area 111b may include a surface-treated area. As an optional embodiment, the liquid medicine facing region 111b may include one or more protruding parts pt and a space part gv adjacent thereto. For example, the liquid medicine facing region 111b may include a plurality of protrusions pt, and a space gv may be formed between the adjacent protrusions pt.

As an optional embodiment, the protrusion pt may include a curved surface. For example, the protrusion pt may include a partial shape of a sphere.

It is possible to effectively increase frictional force while reducing damage to a moving part (not shown) through the curved protrusion (pt).

Referring to FIG. 7 , the liquid medicine facing area 111b may include a surface-treated area. As an optional embodiment, the liquid medicine facing region 111b may include one or more protruding parts pt and a space part gv adjacent thereto. For example, the liquid medicine facing region 111b may include a plurality of protrusions pt, and a space gv may be formed between the adjacent protrusions pt.

As an alternative embodiment, the protrusion pt may include a plurality of protrusions pt having at least the same size and shape, and a uniform space gv may be formed between adjacent protrusions pt. .

In addition, as an optional embodiment, the protrusion pt may have a pillar-like shape, and a cross section may include a planar shape.

Referring to FIG. 8 , the liquid facing area 111b may include a surface-treated area. As an optional embodiment, the liquid medicine facing region 111b may include one or more protruding parts pt and a space part gv adjacent thereto. For example, the liquid medicine facing region 111b may include a plurality of protrusions pt, and a space gv may be formed between the adjacent protrusions pt.

As an optional embodiment, the protrusion pt may have a shape in which the width decreases toward the end, and may include, for example, a cone, a truncated cone, or a sawtooth shape.

In this embodiment, the chemical solution is stored in the liquid storage unit of the liquid medicine injection device, and the chemical liquid stored in the liquid storage unit through the drive unit can be delivered in the direction of the needle module. It can be injected into the user's body as an injection target, a specific example.

The chemical storage unit may include an outer portion, and the chemical solution may be accommodated in an inner space surrounded by the outer portion. The drug liquid facing area, which is the surface of the space facing the liquid medicine of the outer portion, may include a protruding portion and a space portion on the surface, and may include, for example, a region having roughness due to fine surface treatment.

Through this, when the chemical storage unit is formed of a light-transmitting material, it is possible to easily check the presence or absence of the chemical liquid in the inner space and the remaining amount of the chemical liquid through the shape of the surface of the area facing the chemical liquid. Also, by increasing the surface area in contact with the chemical solution in the inner space of the chemical storage unit, the chemical solution can be effectively accommodated in the chemical storage unit.

Also, as an optional embodiment, a moving unit may be disposed in the liquid chemical storage unit to pump and move the liquid liquid, and the moving unit may have a shape such as a piston. The area facing the chemical liquid of the present embodiment can form frictional force with the moving part, reduce or prevent unnecessary sliding of the moving part, and through this, the liquid medicine of the liquid storage part can be effectively injected into the needle module. As a result, it is possible to precisely control the injection of a predetermined chemical solution over a plurality of times.

Through this, it is possible to increase the convenience of the user who mounts and uses the chemical solution injection device and the effect through the injection of the chemical solution.

9 is a perspective view schematically showing a chemical solution injection device according to another embodiment of the present invention, FIG. 10 is a schematic plan view of the drug solution injection device of FIG. 9, and FIG. 11 is taken along line XI-XI of FIG. 10 A cross-sectional view, and FIG. 12 is an enlarged view of K in FIG. 11 .

Referring to FIGS. 9 to 12 , the liquid medicine injection device 200 of this embodiment may include a liquid medicine storage unit 210 , a driving unit 220 and a needle module 230 .

The drug solution injection device 200 may be disposed adjacent to the skin of a person to whom the drug solution is injected, and may inject the drug solution in an injection direction ('-' direction in the Z-axis direction of FIG. 9).

Also, as an optional embodiment, the drug solution injection device 200 may be mounted on the user's body.

The drug injection device 200 may include a cover 201 , and the cover 201 may be formed to cover the drug storage unit 210 , the driving unit 220 and the needle module 230 .

For convenience of description, FIG. 10 shows a state in which the cover 201 of FIG. 9 is removed.

* The drug injection device 200 may include a base 202, and this base 202 may be formed to face the cover 201.

As an optional embodiment, the cover 201 and the base 202 may be connected to each other to become a housing of the drug injection device 200 .

As an optional embodiment, the cover 201 may include an opening, and a button 235 may be disposed to correspond to the opening, and the button 235 may correspond to the needle module 230 .

For example, the button 235 may be disposed on the needle module 230, and the button 235 may be formed such that a user may press or rotate it. Exercise for the needle module 230 may be possible through the button 235 .

The liquid medicine storage unit 210 may be formed to accommodate one or more types of liquid medicine. For example, the liquid medicine storage unit 210 may accommodate the liquid medicine so as to inject the liquid into a person at once. Also, as another example, the chemical storage unit 210 may accommodate the chemical solution so as to continuously inject the chemical solution multiple times.

The liquid medicine storage unit 210 may include a tank-shaped container to store the liquid medicine. The chemical storage unit 210 may contain a waterproof material capable of accommodating the chemical solution, for example, a plastic-based material, or may be formed of various other materials.

As an optional embodiment, the chemical storage unit 210 may contain glass, metal or silicon material.

As shown in FIG. 10 , the chemical storage unit 210 includes one or more outer parts 211 , and the liquid medicine may be accommodated in an inner space formed inside the outer part 211 . For example, the outer portion 211 may be the first outer portion 211 facing the cover 201 .

The drug solution may be of various types, and may include an insulin-based drug solution for diabetic patients, other various types of drug solutions for the pancreas, heart drugs, and the like.

As an optional embodiment, the liquid medicine storage unit 210 may be replenished with liquid medicine through a filling passage (not shown).

The movement unit 290 may be disposed in the inner space of the liquid medicine storage unit 210 .

For example, one or more moving parts 290 may be disposed in a space where the chemical solution is accommodated inside the outer portion 211 of the chemical storage unit 210 .

The motion unit 290 can effectively move the liquid medicine and, in detail, can easily transfer the medicine stored in the liquid medicine storage unit 210 to the needle module 230 to be described later.

For example, the chemical stored in the chemical storage unit 210 may be injected into the user's body as many times as desired through the movement of the exercise unit 290 .

Information on the inner space of the first outer portion 211 of the chemical storage unit 210 will be described in more detail with reference to FIG. 12 to be described later.

The drive unit 220 can deliver the drug solution stored in the drug storage unit 210 to the needle module 230 and easily inject the drug solution from the needle module 230 into the skin of a target for injection, for example, a person.

As an optional embodiment, the drive unit 220 may include a pump, and the chemical solution stored in the chemical storage unit 210 may be transferred toward the needle module 230 by a predetermined amount through pumping of the pump.

The driving unit 220 may be connected to the power source 250 . The power source 250 may include a battery, and may include a rechargeable battery. Also, as another example, the power source 250 may include a disposable battery.

In addition, as an optional embodiment, the driving unit 220 is electrically connected to a controller (not shown), and the driving unit 220 may control the injection of the liquid medicine through the control of the controller.

The drive unit 220 may be any type of pump having a power to suck in the chemical solution and to discharge the chemical solution by electricity. For example, all types of pumps such as mechanical displacement type micropumps and electromagnetic motion type micropumps can be used. The mechanical displacement type micropump is a pump that uses the movement of solids or fluids such as gears or diagrams to create a pressure difference to induce fluid flow. Diaphragm displacement pumps, fluid displacement pumps ), and rotary pumps. An electrokinetic micropump is a pump that uses energy in the form of electricity or magnetism directly to move a fluid, and includes an electrohydrodynamic pump (EHD), an electroosmotic pump, and a magnetohydrodynamic pump ( Magneto hydrodynamic pump) and electro wetting pump.

The needle module 230 may include at least one needle part ND. The needle part (ND) has an empty inside, and the chemical solution of the chemical storage unit 210 can be injected into the drug solution injection target through this internal space.

A connection part TN may be disposed between the needle module 230 and the chemical solution injection part 210 . The connection part TN may include at least a delivery area so that the medicine solution of the medicine solution injection unit 210 is delivered to the needle module 230, and may include, for example, a hollow tube shape.

The connection part TN may be formed in various shapes, and may include, for example, a flexible tube shape.

The drive unit 220 of the present embodiment is connected to the liquid medicine storage unit 210 so that the liquid medicine stored in the liquid medicine storage unit 210 can be easily transferred to the needle module 230 through the connection part TN.

The needle module 230 includes a holder supporting the needle part ND, and the holder supporting the needle part ND may be disposed to face the button 235 . Also, although not shown, a spring (not shown) may be interposed between the needle module 230 and the button 235 . The button 235, spring (not shown) and needle module 230 may be aligned along the Z axis of FIG. 9 .

Also, although not shown, as an optional embodiment, a sensor (not shown) may be further positioned between the cover 201 and the base 202 or on at least one surface.

Such a sensor (not shown) may be provided to sense whether the needle module 230 is adjacent to the needle through-hole formed in the base 202 .

In addition, such a sensor (not shown) may be electrically connected to a controller (not shown) that controls the driving unit 220 described above.

11 is a cross-sectional view taken along line XI-XI in FIG. 10, and FIG. 12 is an enlarged view of line K in FIG.

Referring to FIGS. 11 and 12 , an inner space of the liquid medicine storage unit 210 is shown. The inner space of the chemical storage unit 210 may be defined as the inner space of the outer parts 211 and 212 .

For example, the chemical storage unit 210 may include a first outer portion 211 and a second outer portion 212 that face each other.

The first outer part 211 and the second outer part 212 may be formed to face each other, for example, the first outer part 211 faces the cover 201 and the second outer part 212 faces the base 202. can be headed

An inner space may be formed to face the first outer part 211 and the second outer part 212, and the inner space may be specifically defined by the inner surface corresponding to the first outer part 211 and the second outer part 212. there is.

An exercise unit 290 may be disposed in an inner space corresponding to the first outer portion 211 and the second outer portion 212 .

The moving unit 290 may have a piston shape and may include a column shape having a cross-sectional area. For example, the movement unit 290 may be formed in a circular column shape. Alternatively, it may be formed in an elliptical column shape or have various shapes such as a polygonal column shape such as a square column. In detail, the movement unit 290 may have a shape corresponding to the inner space of the liquid medicine storage unit 210 .

The movement unit 290 may move toward a discharge port (not shown) along the longitudinal direction D1 of the chemical storage unit 210 in the inner space of the chemical storage unit 210, and this discharge port (not shown) is a needle module ( 230) can be linked.

The moving part 290 moves in a state of being in contact with at least one area of the inner surface of the liquid chemical storage unit 210, and the chemical liquid stored in the internal space according to the movement of the moving part 290 passes through a discharge port (not shown) into the liquid chemical storage unit. It can be discharged to the outside of (210). The movement unit 290 may include materials such as rubber and/or silicon. As an optional embodiment, an elastic part such as a rubber ring may be disposed on one area of the outer surface of the moving part 290 .

Referring to FIG. 12 , the first outer portion 211 may include an outer surface area 211a and a liquid medicine facing area 211b.

The outer surface area 211a may correspond to the outer surface of the first outer portion 211, and the liquid medicine facing area 211b defines an inner space in which the liquid medicine is accommodated, and faces the liquid medicine in at least one area and at least At one point in time, it may come into contact with the liquid medicine.

The liquid facing area 211b may include a surface-treated area. As an optional embodiment, the liquid medicine facing region 211b may include one or more protruding parts pt and a space part gv adjacent thereto. For example, the liquid medicine facing region 211b may include a plurality of protrusions pt, and a space gv may be formed between the adjacent protrusions pt.

As an optional embodiment, the protrusion part pt may include a plurality of protrusion parts pt having at least different sizes and shapes.

The chemical liquid facing region 211b has a surface treatment area, for example, a region including a plurality of protrusions pt, so that when the chemical liquid is accommodated in the chemical liquid storage unit 210, the chemical liquid storage unit 210 emits at least light. In the case of a transparent material, the shape of the surface of the chemical liquid facing region 211b can be recognized, and through this, it is possible to easily determine whether or not the chemical liquid has been received or the amount of the chemical liquid.

In addition, the chemical liquid facing region 211b may have a surface treatment area, for example, a region including a plurality of protrusions pt, so that the chemical liquid may be more efficiently accommodated in the chemical liquid storage unit 210 by increasing the surface area.

In addition, it is possible to improve the frictional force between the moving part 290 for easy delivery of the chemical solution stored in the chemical storage unit 210 and the chemical solution facing area 211b and improve adhesion.

Through this, when the moving unit 290 is exercising, the chemical solution can be effectively delivered from the chemical storage unit 210 to the needle module 230 as precisely as desired.

The protruding portion pt has a minute shape and may be formed to reduce unnecessary residual of the chemical liquid and to reduce damage or unnecessary interference to the moving part 290 that may be disposed therein.

For example, the protrusion pt may have a size of several micrometers or less, and may have a size of 0.1 to 10 micrometers as a specific example.

Through this, the liquid facing region 211b may have a surface roughness value, for example, 0.1 to 5 micrometers, and as a specific example, 0.2 to 1 micrometer.

The chemical solution facing region 211b may be formed to include a plurality of protrusions pt in various ways, for example, it may be formed by treating the surface by a physical method or by using a chemical solution.

As an optional embodiment, the outer surface area 211a and the liquid facing area 211b may have different surface shapes.

For example, the outer surface region 211a and the liquid facing region 211b may have different roughnesses. As a specific example, the outer surface area 211a and the liquid facing area 211b may have different surface roughnesses.

As an optional embodiment, the surface roughness of the liquid facing area 211b may be greater than that of the outer surface area 211a.

Through this, the chemical storage unit 210 is formed of a material that transmits light, and the surface characteristics of the chemical liquid facing region 211b can be visually recognized, and the received state of the stored chemical liquid and the received amount can be confirmed.

Although not shown, the liquid facing area of the second outer portion 212 facing the first outer portion 211 may also have a surface-treated area, for example, a plurality of protrusions. As the same as above, detailed descriptions are omitted.

Although not shown, the aforementioned FIGS. 6 to 8 can be selectively applied to this embodiment.

In this embodiment, the chemical solution is stored in the liquid storage unit of the liquid medicine injection device, and the chemical liquid stored in the liquid storage unit through the drive unit can be delivered in the direction of the needle module. It can be injected into the user's body as an injection target, a specific example.

The chemical storage unit may include an outer portion, and the chemical solution may be accommodated in an inner space surrounded by the outer portion. The drug liquid facing area, which is the surface of the space facing the liquid medicine of the outer portion, may include a protruding portion and a space portion on the surface, and may include, for example, a region having roughness due to fine surface treatment.

Through this, it is possible to form a frictional force between the moving part disposed inside the chemical storage unit for pumping and moving the chemical liquid and the inner region of the chemical storage unit, and it is possible to reduce or prevent unnecessary sliding of the moving part.

The chemical solution of the chemical storage unit can be effectively injected into the needle module by improving the adhesion characteristics between the moving part and the area facing the chemical solution, and as a specific example, the injection of the prescribed chemical solution over a plurality of times can be precisely controlled.

Through this, it is possible to increase the convenience of the user who mounts and uses the chemical solution injection device and the effect through the injection of the chemical solution.

In addition, as an optional embodiment, when the chemical storage unit is formed of a light-transmitting material, it is possible to easily check the presence or absence of the chemical liquid in the inner space and the remaining amount of the chemical liquid through the shape of the surface of the area facing the chemical liquid. Also, by increasing the surface area in contact with the chemical solution in the inner space of the chemical storage unit, the chemical solution can be effectively accommodated in the chemical storage unit.

13 is a schematic perspective view of a chemical solution injection device according to another embodiment of the present invention, and FIG. 14 is a schematic front view of the chemical solution injection device of FIG. 13 .

15 is a schematic plan view of the chemical solution injection device of FIG. 13 with a cover removed for convenience of explanation, FIG. 16 is a cross-sectional view taken along line XVI-XVI in FIG. 15, and FIG. 17 is K in FIG. 16 is an enlargement

Referring to FIGS. 13 to 16 , the liquid medicine injection device 300 of this embodiment may include a liquid medicine storage unit 310 , a driving unit 320 and a needle module 330 .

The drug solution injection device 300 may be disposed adjacent to the skin of a person to whom the drug solution is injected, for example, and may inject the drug solution in an injection direction (Z-axis direction in FIG. 14 ). Specifically, the chemical solution may be injected through the needle part ND in the z-axis direction of FIG. 14 .

Also, as an optional embodiment, the drug solution injection device 300 may be mounted on the user's body.

The drug injection device 300 may include a cover 301 , and the cover 301 may be formed to cover the drug storage unit 310 , the driving unit 320 and the needle module 330 .

For convenience of explanation, FIG. 15 shows a state in which the cover 301 of FIG. 13 is removed.

The drug solution injection device 300 may include a base 302 , and the base 302 may be formed to face the cover 301 . In addition, as an optional embodiment, the base 302 may include a larger shape than the cover 301, and through this, when the user wears it on the body, it is stably attached to the user's body to improve stability.

For example, at least one area of the base 302 may be in close contact with the user's body, and as an optional embodiment, may include an adhesive material or may include an adhesive tape form.

As an optional embodiment, the cover 301 and the base 302 may be connected to each other to become a housing of the drug injection device 300 .

As an optional embodiment, the cover 301 may include an opening, and a button 335 may be disposed to correspond to the opening, and the button 335 may correspond to the needle module 330 .

For example, a button 335 may be disposed on the needle module 330, and the button 335 may be configured to be pressed or rotated by a user. Exercise for the needle module 330 may be possible through the button 335 .

The liquid medicine storage unit 310 may be formed to accommodate one or more types of liquid medicine. For example, the liquid medicine storage unit 310 may contain the liquid medicine so as to inject the liquid into a person at one time. Also, as another example, the chemical storage unit 310 may accommodate the chemical solution so as to continuously inject the chemical solution multiple times.

The liquid medicine storage unit 310 may include a tank-shaped container to store the liquid medicine. The chemical storage unit 310 may contain a waterproof material capable of accommodating the chemical solution, for example, a plastic-based material, or may be formed of various other materials.

As an optional embodiment, the chemical storage unit 310 may contain glass, metal or silicon.

As shown in FIG. 16 , the chemical storage unit 310 includes one or more outer parts 311 , and the liquid medicine may be accommodated in an inner space formed inside the outer part 311 . For example, the outer portion 311 may be a first outer portion 311 facing the cover 301 .

The drug solution may be of various types, and may include an insulin-based drug solution for diabetic patients, other various types of drug solutions for the pancreas, heart drugs, and the like.

As an optional embodiment, the liquid medicine storage unit 310 may be replenished with liquid medicine through a filling passage (not shown).

The movement unit 390 may be disposed in the inner space of the liquid medicine storage unit 310 .

For example, one or more moving parts 318 may be disposed in a space where the chemical solution is accommodated inside the outer portion 311 of the chemical storage unit 310 .

The movement unit 318 can effectively move the liquid medicine, and in detail, can easily transfer the medicine stored in the liquid medicine storage unit 310 to the needle module 330 to be described later.

For example, the chemical stored in the liquid medicine storage unit 310 may be injected into the user's body as many times as desired through the movement of the exercise unit 318 .

The movement unit 318 may be connected to the support unit 319 and may move together with the support unit 319 along a movement direction (D1 in FIG. 16 ), for example, along the longitudinal direction of the chemical storage unit 310 .

For efficiency and precision of motion through the support part 319, an elastic part SP may be disposed, and the elastic part SP may have a spring shape.

An intermediate portion 317 may be disposed to correspond to a region of an outer surface of the moving portion 318, and the middle portion 317 may reduce or prevent a gap between the moving portion 318 and the chemical storage portion 310. It may include an o-ring shape of the material.

As an optional embodiment, a groove is formed on the outer surface of the moving part 318 to face the inner surface of the chemical storage part 310, and the intermediate part 317 can be stably disposed in this groove. Through this, the intermediate part ( 317) can efficiently exercise together with the exercise unit 318.

As an optional embodiment, the movement unit 318 may have a shape corresponding to the space inside the liquid medicine storage unit 310, and may have, for example, a convex protrusion.

The driving unit 320 can deliver the drug solution stored in the drug storage unit 310 to the needle module 330 and easily inject the drug solution from the needle module 330 into the skin of a target for injection, for example, a person.

As an optional embodiment, a driving connection unit 340 is disposed between the driving unit 320 and the chemical storage unit 310 to transmit precise driving force to the moving unit 318 of the chemical storage unit 310 .

For example, drive linkage 340 may include one or more gear modules.

As an optional embodiment, the driving unit 320 may include a pump, and the chemical solution stored in the chemical storage unit 310 may be transferred toward the needle module 330 by a predetermined amount through pumping of the pump.

The driving unit 320 may be connected to the power source 350 . The power source 350 may include a battery, and may include a rechargeable battery. Also, as another example, the power source 350 may include a disposable battery.

In addition, as an optional embodiment, the driving unit 320 is electrically connected to a controller (not shown), and the driving unit 320 may control injection of the liquid medicine through the control of the controller.

The drive unit 320 may be any type of pump having a power to suck in the chemical solution and to discharge the chemical solution by electricity. For example, all types of pumps such as mechanical displacement type micropumps and electromagnetic motion type micropumps can be used. The mechanical displacement type micropump is a pump that uses the movement of solids or fluids such as gears or diagrams to create a pressure difference to induce fluid flow. Diaphragm displacement pumps, fluid displacement pumps ), and rotary pumps. An electrokinetic micropump is a pump that uses energy in the form of electricity or magnetism directly to move a fluid, and includes an electrohydrodynamic pump (EHD), an electroosmotic pump, and a magnetohydrodynamic pump ( Magneto hydrodynamic pump) and electro wetting pump.

The needle module 330 may include at least one needle part ND. The needle part (ND) has an empty inside, and the chemical solution of the chemical storage unit 310 can be injected into the drug solution injection target through this internal space.

A connection part TN may be disposed between the needle module 330 and the chemical solution injection part 310 . The connection part TN may include at least a delivery area so that the medicine solution of the medicine solution injection unit 310 is delivered to the needle module 330, and may include, for example, a hollow tube shape.

The connection part TN may be formed in various shapes, and may include, for example, a flexible tube shape.

The drive unit 320 of this embodiment is connected to the liquid medicine storage unit 310 so that the liquid medicine stored in the liquid medicine storage unit 310 can be easily transferred to the needle module 330 through the connection part TN.

The needle module 330 includes a holder supporting the needle part ND, and the holder supporting the needle part ND may be disposed to face the button 335 . Also, although not shown, a spring (not shown) may be interposed between the needle module 330 and the button 335 . The button 335, spring (not shown) and needle module 330 may be aligned along the Z axis of FIG. 14 .

Also, although not shown, as an optional embodiment, a sensor unit 360 may be further positioned between the cover 301 and the base 302 or on at least one surface.

The sensor unit 360 may be provided to sense whether the needle module 330 is adjacent to the needle through hole formed in the base 302 .

In addition, such a sensor (not shown) may be electrically connected to a controller (not shown) that controls the driving unit 320 described above.

16 is a cross-sectional view taken along line XVI-XVI in FIG. 15, and FIG. 17 is an enlarged view of line K in FIG.

Referring to FIGS. 16 and 17 , an inner space of the liquid medicine storage unit 310 is shown. The inner space of the liquid medicine storage unit 310 may be defined as the inner space of the outer part 311 .

An exercise unit 318 may be disposed in an inner space corresponding to the outer portion 311 of the chemical storage unit 310, and the exercise unit 318 has been described above.

The movement unit 318 may move toward a discharge port (not shown) along the longitudinal direction D1 of the chemical storage unit 310 in the inner space of the chemical storage unit 310, and this discharge port (not shown) is a needle module ( 330) can be connected.

Referring to FIG. 17 , the first outer portion 311 may include an outer surface area 311a and a liquid medicine facing area 311b.

The outer surface area 311a may correspond to the outer surface of the first outer portion 311, and the liquid medicine facing area 311b defines an inner space in which the liquid medicine is accommodated in the liquid medicine storage unit 310, faces the liquid medicine in at least one area, and at least At one point in time, it may come into contact with the liquid medicine.

The liquid facing area 311b may include a surface-treated area. As an optional embodiment, the liquid medicine facing region 311b may include one or more protruding parts pt and a space part gv adjacent thereto. For example, the liquid medicine facing region 311b may include a plurality of protrusions pt, and a space gv may be formed between the adjacent protrusions pt.

As an optional embodiment, the protrusion part pt may include a plurality of protrusion parts pt having at least different sizes and shapes.

The chemical liquid facing region 311b has a surface treatment area, for example, a region including a plurality of protrusions pt, so that when the chemical liquid is accommodated in the chemical liquid storage unit 310, the chemical liquid storage unit 310 emits at least light. In the case of a transparent material, the surface shape of the chemical liquid facing region 311b can be visually recognized, and through this, it is possible to easily determine whether or not the chemical liquid has been received or the amount of the chemical liquid.

In addition, the chemical liquid facing region 311b may have a surface treatment area, for example, a region including a plurality of protrusions pt, so that the chemical liquid may be more efficiently accommodated in the chemical liquid storage unit 310 by increasing the surface area.

In addition, it is possible to improve the frictional force between the moving part 318 for easy delivery of the chemical solution stored in the chemical storage unit 310 and the chemical solution facing area 311b and improve adhesion.

As a specific example, frictional force between the middle portion 317 disposed on the outer surface of the moving portion 318 and the liquid medicine facing area 311b may be improved and adhesion may be improved.

Through this, when the moving unit 318 is exercising, the chemical solution can be effectively delivered from the chemical storage unit 310 to the needle module 330 as precisely as desired.

The protrusion pt has a fine shape and may be formed to reduce unnecessary residual of the chemical liquid and to reduce damage or unnecessary interference to the moving part 318 that may be disposed therein.

For example, the protrusion pt may have a size of several micrometers or less, and may have a size of 0.1 to 10 micrometers as a specific example.

Through this, the liquid facing region 311b may have a surface roughness value of, for example, 0.1 to 5 micrometers, and as a specific example, 0.2 to 1 micrometer.

The chemical solution facing region 311b may be formed to include a plurality of protrusions pt in various ways, for example, it may be formed by treating the surface by a physical method or by using a chemical solution.

As an optional embodiment, the outer surface area 311a and the liquid facing area 311b may have different surface shapes.

For example, the outer surface region 311a and the liquid facing region 311b may have different roughnesses. As a specific example, the outer surface area 311a and the liquid facing area 311b may have different surface roughness.

As an optional embodiment, the surface roughness of the liquid facing region 311b may be greater than that of the outer surface region 311a.

Through this, the chemical storage unit 310 is formed of a material that transmits light, and the surface characteristics of the chemical liquid facing region 311b can be visually recognized, and the received state of the stored chemical liquid and the received amount can be confirmed.

Although not shown, a chemical solution opposing region 311b may be formed on the inner surface of the chemical storage unit 310 to correspond to at least a region where the moving part 318 moves or a region where the middle part 317 moves.

Although not shown, the aforementioned FIGS. 6 to 8 can be selectively applied to this embodiment.

18 is an exemplary view illustrating a process of injecting a chemical solution using the chemical solution injection device according to the present embodiment.

Referring to FIG. 18, the horizontal axis represents time (t) and the vertical axis represents the chemical solution injection amount (G).

The drug solution injection device according to one of the above-described embodiments may be injected with a necessary drug solution multiple times after the user attaches the device to the body.

For example, as shown in FIG. 18, it may have a design value (I line) to inject multiple times (three times in FIG. 18).

As shown in FIG. 18 , a difference may occur in the actual value (R line) in which the drug solution in the drug storage unit is delivered to the needle module by the drive unit and injected into the user's body.

In this embodiment, the chemical solution is stored in the inner space of the chemical storage unit of the chemical solution injection device, and the surface roughness value is increased through surface treatment on the surface of the inner space where the chemical solution is stored to form a surface with increased roughness.

Through this, it is possible to improve the precision of the chemical solution injection, and, for example, the delivery of the chemical solution to the needle module is effectively progressed through the motion of the movement unit disposed inside the chemical storage unit, so that the delivery of the chemical solution is delayed or omitted at a desired time point. can be reduced or prevented.

As a result, it is possible to secure the drug injection characteristics close to the design value (line I in FIG. 18 ) to improve the convenience of a user equipped with the drug injection device, and to increase the efficacy of the drug solution through injection of the drug solution.

In this embodiment, the chemical solution is stored in the liquid storage unit of the liquid medicine injection device, and the chemical liquid stored in the liquid storage unit through the drive unit can be delivered in the direction of the needle module. It can be injected into the user's body as an injection target, a specific example.

The chemical storage unit may include an outer portion, and the chemical solution may be accommodated in an inner space surrounded by the outer portion. The drug liquid facing area, which is the surface of the space facing the liquid medicine of the outer portion, may include a protruding portion and a space portion on the surface, and may include, for example, a region having roughness due to fine surface treatment.

Through this, it is possible to form a frictional force between the moving part disposed inside the chemical storage unit for pumping and moving the chemical liquid and the inner region of the chemical storage unit, and it is possible to reduce or prevent unnecessary sliding of the moving part.

The chemical solution of the chemical storage unit can be effectively injected into the needle module by improving the adhesion characteristics between the moving part and the area facing the chemical solution, and as a specific example, the injection of the prescribed chemical solution over a plurality of times can be precisely controlled. In addition, it is possible to reduce or block the occurrence of a gap between the middle portion disposed on the outer surface of the moving part to improve adhesion in the chemical storage unit and the area facing the chemical solution, thereby improving the precise control characteristics of desired precise injection of the chemical solution.

Through this, it is possible to increase the convenience of the user who mounts and uses the chemical solution injection device and the effect through the injection of the chemical solution.

In addition, as an optional embodiment, when the chemical storage unit is formed of a light-transmitting material, it is possible to easily check the presence or absence of the chemical liquid in the inner space and the remaining amount of the chemical liquid through the shape of the surface of the area facing the chemical liquid. Also, by increasing the surface area in contact with the chemical solution in the inner space of the chemical storage unit, the chemical solution can be effectively accommodated in the chemical storage unit.

In this way, the present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

Specific executions described in the embodiments are examples, and do not limit the scope of the embodiments in any way. For brevity of the specification, description of conventional electronic components, control systems, software, and other functional aspects of the systems may be omitted. In addition, the connection of lines or connecting members between the components shown in the drawings are examples of functional connections and / or physical or circuit connections, which can be replaced in actual devices or additional various functional connections, physical connection, or circuit connections. In addition, if there is no specific reference such as "essential" or "important", it may not necessarily be a component necessary for the application of the present invention.

In the specification of the embodiments (particularly in the claims), the use of the term "above" and similar indicating terms may correspond to both singular and plural. In addition, when a range is described in the examples, it includes the invention to which individual values belonging to the range are applied (unless there is no description to the contrary), and it is as if each individual value constituting the range is described in the detailed description. . Finally, if there is no explicit description or description of the order of steps constituting the method according to the embodiment, the steps may be performed in an appropriate order. Examples are not necessarily limited according to the order of description of the steps. The use of all examples or exemplary terms (eg, etc.) in the embodiments is simply to describe the embodiments in detail, and the scope of the embodiments is limited due to the examples or exemplary terms unless limited by the claims. It is not. In addition, those skilled in the art can appreciate that various modifications, combinations and changes can be made according to design conditions and factors within the scope of the appended claims or equivalents thereof.

100, 300, 300: chemical solution injection device
110, 210, 310: liquid storage unit
120, 220, 320: driving unit
140, 240, 340: needle module

Claims (1)

A needle module having one or more needle parts formed to be injected into a user's body;
a chemical storage unit having an inner space to store the chemical solution delivered to the needle module, and including a surface-treated inner surface of the inner space; and
a driving unit connected to the chemical storage unit to transfer the chemical solution from the chemical storage unit to the needle module;
At least one movement unit for moving the chemical solution is disposed in a space inside the chemical storage unit,
The moving part includes a groove formed to face the surface-treated shape of the inner surface,
The groove of the moving part includes an area spaced apart from the surface-treated shape of the inner surface,
The surface-treated shape of the inner surface is formed to include a plurality of protrusions,
The plurality of protrusions have a size of 0.1 to 10 micrometers,
The chemical storage unit is disposed between the driving unit and the needle module,
A driving connection unit is disposed between the driving unit and the chemical storage unit,
The drug solution injection device of claim 1 , wherein the drive connecting portion includes one or more gear modules and is formed to transmit a driving force of the driving unit to the moving unit.