WO2016167496A1

WO2016167496A1 - Apparatus for removing waste from skin disease, and method for removing waste from skin disease using same

Info

Publication number: WO2016167496A1
Application number: PCT/KR2016/003234
Authority: WO
Inventors: 강형철
Original assignee: 강형철
Priority date: 2015-04-14
Filing date: 2016-03-30
Publication date: 2016-10-20
Also published as: KR20160122433A; KR101722710B1

Abstract

The present invention relates to a method for removing waste from skin diseases, such as acne occurring on the epidermis or pores of the dermis, comprising: a preparation step for holding skin around a pore, in which acne occurs, into a suction space and then expanding the opening of the pore by skin expansion by sucking up the skin around the pore by means of a negative pressure; and a removal step for providing positive pressure for a short time period through an extrusion space formed in a position near the opening of the pore other than the suction space, to thereby extrude acne waste from the pore of which the opening is expanded by an impact applied to the pore.

Description

Skin disease waste removal device and its removal method

The present invention relates to a skin disease waste removal device and a method for removing the same, and more particularly, to a skin disease waste removal device and a method for removing the waste matter in the pores without damaging the skin tissue through positive and negative pressure.

Acne is defined as a chronic inflammatory disease that occurs in the fur branch. Generally, 22 years old or older are classified as adolescent acne and 25 years or older as adult acne. It is known that the incidence of males is 16 to 19 years, and females are 14 to 16 years old, and it usually disappears in the mid 20s, beginning with puberty, but it is observed in adulthood due to stress and nutrient imbalance in modern times. .

The mechanism by which acne develops begins when the androgen, a male hormone, stimulates the sebaceous glands of the hair follicles and increases sebum secretion.As a result of the thickening of the stratum corneum of the skin, sebum is not excreted in the pores, which leads to inflammation. . In some cases, it is naturally lost, but there is a lot of misunderstanding about the cause, which is likely to worsen as a severe symptom or leave traces of keloids and permanent scars.

The exact causes of acne are typically abnormally increased follicular wall hyperkeratosis and abnormal dropout, increased sebum secretion, proliferation of acne bacteria (Propionibacterium acnes), and inflammation.

First, sebaceous oversecretion is the largest contributor to acne outbreaks. The sebaceous glands cover the skin's surface with oil to prevent the loss of the natural moisturizing factor of the dermis, but when excessively secreted, the sebum accumulates in the hair follicles due to the balance between production and discharge.

Second, the stratum corneum of the skin functions by balancing water, lipids, and natural moisturizing factors. Therefore, the increase in sebum secretion due to the stimulation of testosterone dilutes cholesterol and cholesterol sulfate, which are lipid components of the hair follicle epithelium, and prevents the components of the stratum corneum from being balanced. This imbalance results in an increase in the binding of keratinocytes near the hair follicles, preventing the keratin from falling off normally, resulting in abnormal growth of keratin in the hair follicles. When the thick keratin layer in which keratin hyperstimulation occurs is peeled off in the hair follicles or blocks the follicle inlet, normal sebum discharge is stagnated, and the scalp is formed. The resulting scalp provides an environment where acne bacilli grow in closed hair follicles, causing inflammation, which can be viewed as an early stage of acne formation.

Third, when the microbubble is formed due to excessive proliferation of sebaceous glands and hyperkeratosis of the hair follicle wall, sebum discharge and air circulation are not desired, thereby creating an environment in which acne bacteria can grow in closed hair follicles. The increase in acne and staphylococci residing in hair follicles breaks down triglyceride, a component of sebum, and converts it into free fatty acids, and various enzymes produced by free fatty acids stimulate the inner wall of hair follicles to collect white blood cells. . Furthermore, when the inner wall of hair follicles is destroyed by the stimulation of white blood cells and free fatty acids, the contents of the closed hair follicles from the outside of the skin flow into the skin, i.e., the dermis, which is the main cause of the formation of inflamed acne.

The management form of acne is largely self-care including acne extrusion, face wash, diet management, skin care including exfoliation and Lymph Drainage, hydration, and using drugs or laser Medical skin care, including dermabrasion and eating or applying medications.

A common acne management method as described above is an acne extrusion method.

First, the acne extrusion method is to open the pores clogged with steam towels and then squeeze two sterile cotton swabs against the acne area and then squeeze the ethanol or oily skin convergence lotion on a cotton swab to disinfect the area.

Then, using a sterile needle or a carbon dioxide laser to make a hole in the direction of the mother liquor and press it with a cotton cloth extractor to extract. At this time, the method of extruding acne depends on the symptoms of the lesion. In the case of cotton vesicles and small pustules, they are discharged through the center, but in the case of nodules and cysts, the contents are excised to discharge.

However, the conventional acne extruded self-care method does not disinfect the site, or the use of needles can not control the depth and size of the cut, causing unwanted bleeding and skin damage.

In addition, when the needle is used to break the tip of the acne to squeeze pus, the contamination probability of the needle increases, which may be accompanied by a risk of infection, inflammatory pigmentation and scarring.

Skin disease waste removal device of the present invention and a method for removing the same by the present invention to solve the above problems by generating a negative pressure around the pores around the pores to expand the surface area of the pores and at the same time close to the pore inlet It strikes the positive pressure directly on the skin so that the waste in the pores are extruded to the outside.

In addition, an object of the present invention is to combine the drug having a functional component in the air having a pressure to allow the drug to flow into the pores after the extrusion of the waste to improve the skin disease treatment effect.

Skin disease waste removal method of the present invention for achieving the above object in the method for removing skin disease waste, such as acne generated in the epidermis or dermal pores, by accommodating the skin around the pores where the acne is generated in the suction space The pre-stage step of sucking the skin around the pores by negative pressure to expand the pores inlet by skin expansion, and the impact force delivered to the pores by instantaneously supplying positive pressure through the extrusion space formed near the inlet pores other than the suction space. Through the inlet is made of a removing step of extruding acne wastes from the expanded pores.

According to the present invention, the positive pressure may be applied to the air having a pressure or to the fluid having a pressure.

According to the present invention, the preparation step is such that the inlet end of the suction space in which the negative pressure is generated is in close contact with the skin around the pores so that the negative pressure is not lost.

According to the present invention, the removing step is such that the extruded space located in the groove in which a portion of the outer periphery of the suction space is dug near the inlet of the pores to approach the inlet of the pores so that a positive pressure impact force is transferred into the pores.

According to the present invention, the waste material extruded from the pores after the removing step further includes a suction step to be sucked into the suction space by the negative pressure.

According to the invention, the fluid allows a drug with functional function to be applied.

According to the present invention, the fluid is joined to the positive pressure supplied to the extrusion space to inject the high pressure fluid at high pressure.

According to the present invention, the suction step allows the waste material extruded from the pores to be sucked into the suction space by negative pressure, while at the same time generating a space where the skin is elastically swelled by the positive pressure, the suction space and the extrusion space are instantaneously. In communication, positive pressure is sucked into the suction space.

Skin disease waste removal device of the present invention provides a negative pressure through the passage having a suction space therein, the negative pressure means for expanding the skin around the pores in which the waste contained in the suction space inlet is generated, and the suction space and It includes a positive pressure means for connecting a pipe having a separate extrusion space to the suction space to provide a positive pressure through the pipe to instantaneously hit the positive pressure on the skin around the pores to extrude the acne waste from the pores by the impact force.

According to the present invention, the suction space has a groove formed in which a portion of the outer periphery is formed in the direction of the suction space center, the positive pressure means is located in the groove to the extrusion space close to the pores received in the suction space To place.

According to the invention, the pipes of the negative pressure means and the positive pressure means are integrated into one.

According to the present invention, the suction space has a length, and the inner peripheral diameter of the suction space on the other side is made smaller than the inner peripheral diameter of the inlet formed on one side of the suction space.

According to the present invention, the extrusion space has a length, and the inner peripheral diameter of the suction space on the other side is formed larger than the inner peripheral diameter of the inlet formed on one side of the extrusion space.

According to the present invention, the fluid supply line is formed inside the other side of the extrusion space to join the fluid to the positive pressure to inject the high pressure fluid at high pressure.

According to the present invention, the fluid supply line is formed in the extrusion space is provided with an injection portion receiving a positive pressure from the outside, the fluid flow in communication with the fluid injection portion inlet to the inlet portion and the flow flow and the mating flow flow, The high pressure part is formed so as to gradually decrease in diameter in the longitudinal direction in communication with the high pressure portion to increase the flow rate and the flow rate, the injection portion is formed in communication with the high pressure part to form a gradually larger diameter to inject the positive pressure in which the fluid is joined; It is formed between the injection portion is composed of an over-flop portion to flow the positive pressure and the overpressure generated when the fluid is moved to the injection portion side to the confluence portion.

Skin disease waste removal device of the present invention as described above and the method for removing it through the skin acne generated pores around the pores in the suction space to suck up the skin around the pores by negative pressure to expand the pores inlet by skin expansion And a step of removing the acne wastes from the pores with the inlet expanded through the impact force delivered to the pores by instantaneously supplying positive pressure through the extrusion space formed near the inlet pores other than the suction space. The negative pressure is generated around the pores to expand the surface area of the skin to expand the pores, and at the same time, the positive pressure is applied directly to the skin adjacent to the pores so that the wastes in the pores are extruded to the outside. It is effective to remove.

In addition, the skin disease waste removal device of the present invention and the method of removing it by generating a negative pressure around the waste generated in the pores to expand the surface area of the skin and at the same time the impact of the functional fluid having a pressure on the skin around the waste that has penetrated the pores As the pores in which wastes are present are expanded, the waste fluids are extruded from the pores, so that functional fluids can penetrate into the pores, thereby improving the effect of treating skin diseases through drugs having functional ingredients.

1 is a flow chart showing a skin disease waste removal method of the present invention.

Figure 2 is a state diagram showing the area of the suction space and the extrusion space in the skin disease waste removal device of the present invention.

Figure 3 is a perspective view showing the skin disease waste removal apparatus of the present invention.

Figure 4 is a cross-sectional view showing a skin disease waste removal device of the present invention.

Figure 5 is a cross-sectional view showing a fluid supply line applied to the skin disease waste removal device of the present invention.

10 pore 11: waste

100: waste removal device 110: negative pressure means

111: suction space 112: groove

120: positive pressure means 121: extrusion space

130: fluid supply line 131: injection portion

132: compliant flow 133: high voltage part

134: injection portion 135: over-plough

136: flow tube

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that in the drawings, the same components or parts denote the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

As used herein, the terms 'about', 'substantially', and the like, are used at, or in the sense of, numerical values when manufacturing and material tolerances inherent in the meanings indicated are intended to aid the understanding of the invention. It is used to help prevent unscrupulous infringers from unscrupulous disclosures where accurate or absolute figures are mentioned to help.

1 is a flow chart showing the skin disease waste removal method of the present invention, Figure 2 is a state diagram showing the area of the suction space and the extrusion space in the skin disease waste removal device of the present invention, Figure 3 is a skin disease waste removal of the present invention Figure 4 is a perspective view of the device, Figure 4 is a cross-sectional view showing the skin disease waste removal device of the present invention, Figure 5 is a cross-sectional view showing a fluid supply line applied to the skin disease waste removal device of the present invention.

First, there are two kinds of holes in our skin surface. One is a thread that is entangled like a thread in the reticular layer of the dermis and is a hole through which sweat is attached, which is a passage through which water is released from the body inside the human body. The other is the hole through which the oil comes out, and the oil producing organ called sebaceous gland is attached to the passage through which the oil is extracted.

The Korean glands are treated with hacetycholinergic neurohormones and their secretion is regulated, but since sebaceous glands are controlled by male hormones, they can be found in the first cause of all trouble processes in the sebaceous gland where acne occurs.

Excess sebum caused by hormones in the human body cannot be discharged out of the epidermis, which causes the keratinization process in the pores to be slower than normal, resulting in a thickening of the stratum corneum in the pores, which leads to waste products such as blackheads or whiteheads, and sebum bacteria. This is because clogging is a phenomenon, especially when the bacteria in the pores like sebum and breeds in the sebum accumulated in the pores, it makes and secretes lipolytic enzymes and makes the pores boring.

Exacerbating factors of such skin diseases are as follows.

Acne, a typical skin disease, appears during puberty when the sex hormone changes are severe. In women, premenstrual, premature, and postmenopausal symptoms worsen before and after. Hormonal sebum secretion is associated with androgen, a male hormone, and other corticosteroids, gonadotropins, and thyroid hormones. And steroid drugs are known to be partly involved in sebaceous glands.

In addition, the stress of acne development process, unlike men, women are secreted from all the testosterone adrenal glands because women are more sensitive than men when the stress is secreted vigorously secretion of sebum production increases rapidly and the face becomes boring.

In addition, more than 80% of the skin acne has more sebaceous glands, larger sebaceous glands and genetically accelerates the process of keratinization compared to people with healthy skin, causing cells in the hair follicles to accumulate on the hair follicle wall. Block the pores with the sebum.

In addition, pressure rubbing habitual touch exacerbates skin diseases. Pressure and friction stimulate acne seeds, promote acne production and cause rupture of the follicle wall.

As described above, a method for removing skin disease wastes such as acne including blackheads and whiteheads from the pores 2 is as follows.

Skin disease waste removal method of the present invention comprises a preparation step, and the removal step.

In the preparation step and the removal step, the positive and negative pressures having air pressure are separated to expand the surface area of the skin tissue of the pores 10 through the negative pressure, and then extrude the waste 11 in the pore 10 through the positive pressure.

Specifically, the preparation step accommodates the skin around the pores 10 where acne has occurred in the suction space 111 to suck up the skin around the pores 10 by negative pressure to expand the pores 10 opening by skin expansion.

In the removing step, the acne waste 11 is extruded from the pores 10 in which the inlet is expanded through the impact force delivered to the pores 10 by instantaneously supplying a positive pressure through the extrusion space 121 formed near the inlet of the pores 10 other than the suction space 111. do.

Here, the positive pressure may be applied to the air having a pressure or fluid with the air having a pressure.

In other words, the negative pressure refers to a pressure for sucking air and generates a negative pressure into the suction space 111.

In addition, the positive pressure discharges the air having a pressure into the extrusion space 121 by discharging the air having a pressure, the positive pressure is discharged at a high pressure by mixing the fluid in the air or pressure air.

Here, the fluid may be applied as a drug having a functional ingredient to help skin diseases.

In particular, the functional fluid 10 refers to a fluid in which vitamin C powder is dissolved in physiological saline. In addition to this, various functional components are mixed with physiological saline.

In addition, the inlet end of the suction space 111 in which the negative pressure is generated is in close contact with the skin around the pores 10 so that the negative pressure is not lost, and the skin elastically expands into the suction space 111 by the negative pressure.

Here, the suction space 111 is formed of a pipe having a length so that the cross section may be formed in a polygonal or circular shape, in the present invention will be described as a circular suction space.

In addition, in the removing step, an extrusion space 121 is provided in a groove 112 in which a part of the outer circumference of the suction space 111 is dug near the inlet of the pore 10 so that the extrusion space 121 is located at the inlet of the pore 10 so that the skin adjacent to the pore 10 is close. The impact force of positive pressure is applied to the inside of the pore 10, and the waste 11 is extruded toward the pore 10 inlet.

When the pore 10 is positioned at the center of the suction space 111, the extrusion space 121 is positioned in the recess 112 recessed in any part of the outer circumference of the suction space, so that the distance between the pore 10 and the extrusion space 121 is a close distance. It is located close to the impact force of the positive pressure supplied through the extrusion space 121 is transferred to the inside of the pores so that the inside of the pores 10 serves to squeeze out the waste.

Next, the waste 11 extruded from the pores 10 through the suction step after the removal step is sucked into the suction space 111 by the negative pressure to more easily extract the waste 11 from the pores 10.

At this time, the suction step is the waste material 11 extruded from the pores 10 is sucked into the suction space 111 by the negative pressure and at the same time the space is elastically dented by the pressure of the positive pressure while the suction space 111 and the extrusion space 121 is While communicating in a moment, positive pressure is sucked into the suction space 111.

Here, when the fluid is joined to the positive pressure, when the high-pressure fluid supplied to the extrusion space 121 hits the skin, the abutment skin of the partition partitioning the suction space 111 and the extrusion space 121 elastically pitted by the impact force, while the extrusion space 121 High pressure fluid flows into the suction space 111.

In addition, some of the high pressure fluid is sucked into the suction space 111, and a part of the high pressure fluid is introduced into the pores 10 from which the waste matter is discharged.

Through this, the high pressure fluid further improves the treatment of skin diseases when the drug component has a functional ingredient.

The apparatus for performing the waste 11 removal method as described above is as follows.

First, the skin disease waste removal device 100 is composed of a township means and a positive pressure means 120.

The negative pressure means 110 provides a negative pressure through a conduit having a suction space 111 therein to expand the skin around the pore 10 in which the waste 11 contained in the suction space 111 inlet is expanded to expand the pore 10 inlet.

In addition, the positive pressure means 120 connects the pipeline having the extrusion space 121 separated from the suction space 111 to the suction space 111 to provide positive pressure through the pipeline, thereby momentarily striking the positive pressure on the skin around the pores 10, thereby exposing the pores 10 by the impact force. Extrude the acne wastes 11 from.

Here, the suction space 111 is formed with a groove 112 into which a portion of the outer periphery circumscribed in the direction of the suction space 111, the pores are accommodated into the suction space 111 by placing a conduit of the extrusion space 121 in the groove 112. The extrusion space 121 is disposed close to the.

In particular, the conduits of the negative pressure means 110 and the positive pressure means 120 are integrated into one.

In addition, the suction space 111 has a length, and the inner peripheral diameter of the suction space 111 on the other side of the inlet formed on one side of the suction space 111 is made smaller.

In addition, the extrusion space 121 has a length, the inner peripheral diameter of the suction space 111 on the other side is formed larger than the inner peripheral diameter of the inlet formed on one side of the extrusion space 121.

A fluid supply line 130 is formed inside the other side of the extrusion space 121 to join the fluid to positive pressure to inject a high pressure fluid at high pressure.

Here, the fluid supply line 130 is composed of the inlet 131, the confluence 132, the high pressure unit 133, the injection unit 134, the flow pipe 136 and the over-plough unit 135.

The injection part 131 is formed in the extrusion space to receive a positive pressure from the outside.

In the matched flow 132, the fluid inlet 131 communicates with the inlet of the inlet 131 so that air and fluid are joined together.

In addition, the high pressure portion 133 is in communication with the mating flow 132 is formed to gradually reduce the diameter in the longitudinal direction has a function to increase the pressure and increase the flow rate.

In addition, the injection unit 134 communicates with the high pressure unit 133 so as to gradually increase the diameter to inject a positive pressure in which the fluid is joined.

The flow pipe 136 provides an externally provided fluid to the confluence.

In addition, the over-plug unit 135 is formed between the high pressure unit 133 and the injection unit 134 so that the positive pressure and the overpressure generated when the fluid is moved to the injection unit 134 side flows to the confluence unit 132.

The fluid supply line 130 configured as described above is performed based on the Venturi effect.

That is, when positive pressure, which is air having pressure, is regularly provided through the inlet 131 of the fluid supply line 130, the positive pressure flows into the conduit 132 in which the space is larger than the inlet, so that the flow pipe 136 communicated with the confluence 132. The fluid is supplied to the confluence 132 through.

At the confluence 132, the air and the fluid having the pressure are mixed and then flowed to the high pressure 133.

At this time, the high pressure portion 133 has a shape that is narrowed as the space of the passage is widened from the portion connected to the confluence portion 132 to the portion connected to the over-plug portion 135, so that the pressure of the fluid is low and the flow velocity is increased in the narrow passage.

Here, the over-plug unit formed on one side of the high-pressure unit 133 is connected to the confluence unit to prevent over-pressure by flowing to the confluence unit 132 through the over-plug unit 135 when over pressure occurs due to the pressure difference between the high-pressure unit 133.

At the same time, the fluid having the high speed while the pressure passing through the high pressure unit 133 is lowered is injected through the injection unit to the outside of the extrusion space.

After all, the present invention is to generate a negative pressure around the pores around the pores to expand the surface area of the skin to expand the pore inlet, and at the same time directly hit the positive pressure on the skin adjacent to the pore inlet so that the waste in the pores is extruded to the outside It is effective in removing wastes from pores without damaging skin tissue.

In addition, when negative pressure is generated around the waste generated in the pores, the surface area of the skin is expanded, and when a functional fluid having pressure on the skin around the waste that has penetrated the pores is blown, the waste is extruded from the pores as the waste is expanded. Thereafter, the functional fluid may penetrate into the pores, thereby improving the skin disease treatment effect through the drug having the functional ingredient.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

Claims

In the method for removing skin disease wastes such as acne generated in the epidermis or dermal pores,

A preparatory step of accommodating acne-prone skin around the pores in a suction space to suck up the skin around the pores by negative pressure to expand the pores inlet by skin expansion;

Skin disease characterized in that it comprises a step of extruding acne wastes from the inlet is expanded through the impact force delivered to the pores by instant supply of positive pressure through the extrusion space formed in the position close to the inlet other than the inlet space How to remove waste.
The method of claim 1,

The positive pressure may be applied to the air having a pressure or air and fluid having a pressure, characterized in that the skin disease waste removal method.
The method of claim 1,

The preparation step,

A method for removing skin disease waste, characterized in that the inlet end portion of the suction space generating negative pressure is in close contact with the skin around the pores so that the negative pressure is not lost.
The method of claim 1,

The removing step,

Skin extrusion method for removing waste products, characterized in that the extrusion space located in the groove in which the outer periphery of the suction space is recessed near the inlet of the pores so as to be close to the inlet of the pores so that the impact force of positive pressure is transmitted into the pores.
The method of claim 1,

After the removal step,

Waste material extruded from the pores is a skin disease waste removal method further comprises a suction step to be sucked into the suction space by the negative pressure.
The method of claim 2,

The fluid is a skin disease waste removal method characterized in that the drug having a functional function can be applied.
The method of claim 2,

Skin disease waste removal method, characterized in that the high-pressure injection of the fluid by joining the fluid to the positive pressure supplied to the extrusion space.
The method of claim 5,

The suction step,

The waste products extruded from the pores are sucked into the suction space by negative pressure, while the skin is elastically dented by positive pressure, and the positive pressure is sucked into the suction space while the suction space and the extrusion space are instantaneously connected. Skin disease waste removal method characterized in that.
A negative pressure means for providing a negative pressure through a conduit having a suction space therein to expand the skin around the pores in which the waste contained in the suction space inlet is expanded to expand the pore opening;

A positive pressure means for extruding acne wastes from the pores by impact force by providing a positive pressure through the conduit by connecting a pipeline having an extrusion space separated from the suction space to the suction space to instantaneously hit the positive pressure on the skin around the pores; Skin disease waste removal device, characterized in that.
The method of claim 9,

The suction space is characterized in that any portion of the outer periphery is formed in the groove is formed in the direction of the suction space center, the positive pressure means in the groove to place the extrusion space close to the pores accommodated into the suction space Skin disease waste removal device.
The method of claim 9,

Skin disease waste removal device, characterized in that the passage of the negative pressure means and positive pressure means are integrated into one.
The method of claim 9,

The suction space has a length,

Skin disease waste removal apparatus, characterized in that to form a smaller inner diameter of the suction space on the other side than the inner diameter of the inlet formed on one side of the suction space.
The method of claim 9,

The extrusion space has a length,

Skin disease waste removal device, characterized in that the inner peripheral diameter of the suction space on the other side is formed larger than the inner peripheral diameter of the inlet formed on one side of the extrusion space.
The method of claim 9,

Skin disease waste removal device, characterized in that the fluid supply line is formed in the other side of the extrusion space to join the fluid to positive pressure to inject a high pressure fluid at high pressure.
The method of claim 14,

The fluid supply line,

An injection part formed inside the extrusion space and receiving positive pressure from the outside;

A mating flow in which a fluid injection unit communicates with the inlet of the injection unit to join air and fluid;

The high pressure portion is formed so as to communicate with the mating flow to gradually reduce the diameter in the longitudinal direction to increase the pressure and increase the flow rate,

An injection unit which communicates with the high pressure part to gradually increase the diameter to inject a positive pressure into which the fluid is joined;

A flow pipe for providing fluid from the outside to the confluence unit;

Skin disease waste removal device, characterized in that formed between the high pressure portion and the injection portion is configured to an over-floor portion to flow overpressure generated when the positive pressure and fluid is moved to the injection portion side.