Abstract:
The present invention relates to a self-injection mechanism that causes a solution ( 2 ) having predetermined efficacy to permeate the skin ( 1 ) for skin improvement and beauty treatment. The present invention includes: an accommodation unit ( 10 ) having a space ( 11 ) therein for accommodating the solution ( 2 ), an inlet ( 12 ) which sucks only air at one end, and an outlet ( 15 ) which is open so that the solution ( 2 ) is discharged at the other end; a pumping unit ( 20 ) coupled to the outlet ( 15 ) of the accommodation unit ( 10 ) so as to be in communication with the same, having an airless pump ( 21 ) which discharges the solution ( 2 ) by an up and down movement at the center; and an injection unit ( 30 ) coupled with the airless pump ( 21 ) of the pumping unit ( 20 ) so as to be in communication with the same, causing the solution ( 2 ) which is discharged by the up and down movement to permeate the skin ( 1 ). The present invention can be formed into a stamp-type simple structure in order to reduce manufacturing costs, and thus can be used easily and conveniently at home at inexpensive cost. Also, the solution can be injected directly and uniformly by a needle penetrating the outer skin layer and the thick skin layer of the skin so as to minimize loss of the solution while maximizing the efficacy thereof.

Description:
TECHNICAL FIELD  
       [0001]    The present invention relates to a self-injection mechanism for a skin improvement or a beauty care by penetrating, into a skin, a solution which has predetermined efficacy, and in particular to a self-injection mechanism for the use on a skin which is characterized by forming a stamp-type structure, which is light, thin, short and small, thereby lowering a manufacturing cost. Accordingly, every home can easily and conveniently equip the mechanism at a lower cost, and the efficacy may be maximized while minimizing any loss of a solution in such a way to uniformly and directly inject the solution in a state where a needle is penetrated inside an epidermis and a dermis of a skin. 
       BACKGROUND ART  
       [0002]    A human skin in general is divided into an epidermis (outer skin), a dermis (inner skin), and a subcutaneous tissue. In case of a healthy and young skin, about 80% of the dermis is filled with collagen and elastin. In case of the dermis, the quantities of the collagen and the elastin gradually decrease (contraction) as time goes by, so the dermis becomes thinner, and the skin becomes dry and wrinkles increase, so the elasticity of the skin is lowered. Therefore, various nutritious substances, for example, a substance (functional cosmetics) such as vitamin C, peptide, etc., which help the creations of the collagen, elastin, etc. are coated on the skin in order to maintain the skin elastic while preventing the loss of the elasticity. 
         [0003]    However, the quantities of the nutritious substances which penetrate through the epidermis into the dermis account for about 0.3%, which is very small quantity. Since the way where the above-mentioned various nutritious substances are simply coated on the epidermis of the skin have very weak effects, it urgently needs to develop a predetermined mechanism which may help effectively penetrate the above nutritious substances into the dermis which resides deep inside the skin without any loss. 
         [0004]    For instance, according to the Korean Utility Model Registration No. 20-0395359 entitled “micro-needle roller”, the micro-needle roller is characterized in that the roller is formed by laminating at least one circular disk, and at least one micro-needle is disposed inside the circular disk or at one surface thereof, and a predetermined length of one end of the thusly disposed micro-needle exposes from the outer surface of the roller. 
         [0005]    For another instance, according to the Korean Utility Model Registration No. 20-0423963 entitled “stamp type skin stimulator”, the stamp type skin stimulator includes a hexahedron shaped housing the top of which is open, a handle bar formed of a rod downwardly extending from the bottom of the housing, a flat plate-shaped cover which is secured to the upper surface of the housing and includes a plurality of needle holes arranged at regular intervals, and a plurality of needles which fit into the needle holes wherein the ends of the needles expose from the needle holes. 
         [0006]    The mechanism mentioned in the above prior has an advantage in the way that a penetration force of the nutritious substance into the dermis may be a little increased since a needle artificially forms the hole passing through the epidermis and the dermis of the skin in such a way that a needle having a predetermined protruding length is disposed at an outer circumferential surface of the roller and on one surface of the stamp, and then the roller and the stamp are contacted with the skin; however in case of the roller, since the needle does not vertically contact with the skin, the epidermis and the dermis may be hurt, thus doubling the user&#39;s pain. In particular, in case of the head skin or the skin which has lots of hairs or body hairs, the body hairs may get tangled between the needles. 
         [0007]    Here, in case of the stamp, it improves the problem where the user feels pain since the needle vertically contacts with the skin and the body hairs get entangled, but since the nutritious substance is coated on the surface of the epidermis after the artificial holes of the epidermis and the dermis like the roller are formed, a very small quantity of the substance reaches (absorbed) the dermis. Even though the needle artificially forms the holes passing through the epidermis and the dermis, since the skin of the human basically has a barrier protection function for protecting from the outside, the holes are suddenly closed. For example, in case where the skin is burned, the patient does not die of the hurt skin, but the patient dies of infections since various bacteria penetrate from the outside into the skin because the hurt skin loses the barrier function. Therefore, there may be a limit when effectively penetrating the nutritious substance into the dermis without any loss by forming only the holes through the epidermis and the dermis of the skin. 
         [0008]    In addition to that, according to the Korean Patent Publication No. 10-2011-0108445 entitled “automatic skin micro-channel stamp which helps acne, various scars and wrinkle therapy”, a stamp head  106   a  is attached to a body  103   a , and the height of the head may be adjustable based on a length adjusting groove  103   b  (the length where the needle exposes is therefore determined), and a thin needle surface  107   a  quickly forms a fine hole at the skin and separates from there by inserting a spring  105   a  into a body. Disclosed is the automatic skin micro-channel stamp in which the depth where the needle separates from the stamp head  106   a  contacting with the skin and is penetrated into the skin may be adjusted within a range of 0.20 mm˜2.3 mm. 
         [0009]    The mechanism mentioned in the prior art is characterized in that the needle is hidden inside the stamp, and the penetration depth of the needle may be adjusted. In the structure, the stamp closely contacts with the skin, and the user presses the operable unit with hands, and the needle protrudes to artificially form the holes passing through the epidermis and the dermis of the skin, and it recovers by means of a spring. The above mentioned mechanism however improves only a part as compared with the earlier mentioned stamp mechanism, and since there is not a fundamental improvement to enhance the penetration force of the nutritious substance, the same problems occur. Namely, even though the needle artificially forms the holes passing through the epidermis and the dermis, since the skin of the human basically has a barrier function for protecting from the outside, the holes are suddenly closed. Therefore, there is a limit when effectively penetrating the nutritious substances into the dermis without any loss only by simply forming the holes passing through the epidermis and the dermis of the skin. 
         [0010]    Meanwhile, in recent years, various skin care tools are being used for surgeries at dermatology. Among such tools, there are assistant tools such as a cellas which uses laser and a mesogun which uses needle wherein the above tools are used for forming small holes on a skin. The cellas is a laser tool characterized in that about 2,000˜10,000 holes are uniformly formed using laser beam at the depths of 0.1 mm˜1.5 mm at the intervals of 0.3 mm˜1.0 mm, and new flesh is guided to grow from the surrounding living cells where the laser beam did not pass through, to the dead cells where the laser beam passed through, and the mesogun is a gun type medical tool with a small needle, more specifically, a medical tool which is capable of improving absorption rate by injecting medicine and cosmetic after forming holes using the needle up to the dermis of the skin. Such medical tools provide effects for helping the dermis therapy and improving the reaches of the functional cosmetic and active up to the dermis; however the above medical tools are so bulky, and prices are high, and the products are expensive. Above all, it is impossible to use without the medical doctor&#39;s accurate diagnosis and surgery after the patients visit the dermatology. 
       DETAILED DESCRIPTION OF THE INVENTION 
     Disclosure of Invention 
       [0011]    Accordingly, the present invention is to fundamentally solve the problems of the conventional art. It is an object of the present invention to provide a self-injection mechanism for the use on a skin characterized in that since the mechanism is formed in a stamp type light, thin, short and small structure, the manufacturing cost may become lower, and every home may easily and conveniently adopt for lower prices, and any loss of the solution may be minimized in such a way to uniformly and directly inject the solution in a state where the needle has penetrated in the epidermis and the dermis of the ski while maximizing the efficiency. 
       Means for Solving the Problem 
       [0012]    To achieve the above objects, according to one aspect of the present invention, there is provided a self-injection mechanism for use on skin configured to inject a solution having predetermined efficacy into a skin for skin improvements or beauty treatment, which includes an accommodation unit which includes a space configured to accommodate the solution inside the space, a suction port disposed at one end for sucking only air, and a discharge port disposed at the other end and being open for discharging the solution; a pumping unit which is engaged to communicate with the discharge port of the accommodation unit and includes an airless pump disposed at the center for discharging the solution based on up and down motions; and an injection unit which is engaged to communicate with the airless pump of the pumping unit and is configured to penetrate the solution discharged based on the up and down motions into the skin. 
         [0013]    At this time, the accommodation unit includes a cover with a suction hole being interposed together with a packing which floats over the space while sealing the solution of the suction port. 
         [0014]    In addition, the injection unit of the present invention includes a housing which includes a fixture and a slanted member combined with the airless pump; a needle unit which includes a needle groove and a needle disposed at the bottom of the housing; and a fixing unit which includes a fixing groove and a fixing protrusion for fixing the housing and the needle unit. 
         [0015]    Also, the housing of the present invention further includes a rubber grip or a protrusion formed on an outer circumferential surface for improving a user&#39;s grip feeling and preventing slip by a user. 
         [0016]    Also, the housing of the present invention further includes at least one fixing protrusion and slide groove on the top of an inner circumferential surface for preventing the rotations from the pumping unit. 
         [0017]    To achieve the above objects, according to another aspect of the present invention, there is provided a self-injection mechanism for use on skin configured to inject a solution having predetermined efficacy into a skin for skin improvements or beauty treatment, which includes a handle unit which protrudes for a user to grab and includes an engaging protrusion having at least one shoulder at the bottom; a packing unit which is detachably disposed at the bottom of the handle unit and includes an engaging groove fixedly engaged with the engaging protrusion; and an injection unit which is sealingly engaged with the packing unit and is configured to discharge and penetrate the solution into the skin based on the pressurizing motions of the handle unit. 
         [0018]    At this time, the handle unit of the present invention includes a rubber grip or a protrusion on its outer circumferential surface so as to improve grip feeling and prevent slip. 
         [0019]    Also, the injection unit includes a housing which is combined with the packing unit and includes a fixture, a slanted member and a space for accommodating the solution; a needle unit which includes a needle groove and a needle at the bottom of the housing; and a fixing unit which includes a fixing groove and a fixing protrusion for fixing the housing and the needle unit. 
         [0020]    Also, according to one aspect or another aspect of the present invention, the needle groove of the needle unit includes a fixing groove for fixedly inserting the needles; and a guide groove for guiding, in safe, for the needles to move to the center over the top of the fixing groove. 
         [0021]    Also, according to one aspect or another aspect of the present invention, the needle unit includes a plurality of needles which protrude by predetermined distances long enough to penetrate into the skin, and at least one of the plurality of the needles is a non-protruding needle which comes into contact with the surface of the skin. 
         [0022]    Also, according to one aspect or another aspect of the present invention, the fixing unit is configured to fix the needle onto the slanted member of the housing and further fills a hardener to minimize the consumption of the solution by blocking the space. 
         [0023]    Also, according to one aspect or another aspect of the present invention, the housing further includes a safety cap with an engaging protrusion being interposed so as to block the inputs of bacteria or impurities while protecting the needle unit. 
         [0024]    As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims. Therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are intended to be embraced by the appended claims. 
       Advantageous Effects 
       [0025]    As described in the above configuration and operation, the present invention is characterized in that since the mechanism is formed in a stamp type structure which is light, thin, short and small, the manufacturing cost may become lower, and every home may easily and conveniently adopt for lower prices, and any loss of the solution may be minimized in such a way to uniformly and directly inject the solution in a state where the needle has penetrated in the epidermis and the dermis of the ski while maximizing the efficiency. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0026]      FIG. 1  is a perspective view illustrating an injection mechanism in whole according to one aspect of the present invention. 
           [0027]      FIG. 2  is a disassembled view illustrating a configuration after an injection mechanism is disassembled according to one aspect of the present invention. 
           [0028]      FIG. 3  is a disassembled view illustrating a configuration after the major components of an injection mechanism are disassembled according to one aspect of the present invention. 
           [0029]      FIG. 4  is a cross sectional view illustrating a configuration after an injection mechanism is cut-away according to one aspect of the present invention. 
           [0030]      FIG. 5  is a constructional view illustrating a configuration of an exemplary embodiment according to one aspect of the present invention. 
           [0031]      FIG. 6  is a constructional view illustrating a configuration of a modified example according to one aspect of the present invention. 
           [0032]      FIG. 7  is a cross sectional view illustrating a configuration after an injection mechanism is in whole cut-away according to one aspect of the present invention. 
           [0033]      FIG. 8  is a disassembled view illustrating a configuration after the major components of an injection mechanism are disassembled according to another aspect of the present invention. 
           [0034]      FIG. 9  is a constructional view illustrating a configuration of an exemplary embodiment according to another aspect of the present invention. 
           [0035]      FIGS. 10 to 12  are views illustrating an injection state so as to show a use state of an injection mechanism of the present invention. 
           [0036]      FIG. 13  is a schematic view schematically illustrating a use state of is an injection mechanism according to the present invention. 
       
    
    
     BEST MODES FOR CARRYING OUT THE INVENTION 
       [0037]    The exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 
         [0038]    The present invention relates to a self-injection mechanism for improving or caring skin by penetrating a solution  2 , which has predetermined efficacy, into a skin  1 . In one aspect of the present invention, the present invention is directed to a self-injection mechanism for the use on a skin,characterized in that the self-injection mechanism comprises an accommodation unit  10 , a pumping unit  20  and an injection unit  30 , as major components. In the other aspect of the present invention, the self-injection mechanism comprises a handle unit  10 , a packing unit  20  and an injection unit  30 , as major components. Namely, the same injection unit  30  is used for both the one aspect and the other aspect of the present invention. The accommodation unit  10  and the pumping unit  20  or the handle unit  10  and the pacing unit  20 , which cooperate with the injection unit  30 , may be selectively used. Hereinafter, the present invention will be described based on the exemplary embodiments. 
         [0039]    The term “self-injection mechanism” represents a new concept medicine transfer mechanism which enablesto inject the solution  2  in a state of forming a new passage directly passing through the epidermis  1   a  and the dermis  1   b  of the skin  1 . Namely, the self-injection mechanism is an anti-aging solution mechanism which is characterized in that since the self-injection mechanism is provided in a state where the solution  2  having outstanding effects for the skin improvements and caring verified at the ministry of food and drug safety is previously filled, the user may inject by himself at home like applying the cosmetic, so it is possible to secure the same effects as or better effects than the laser-based peeling surgery while preventing any hurts at the epidermis  1   a  of the skin  1  thanks to the natural therapy of the injuries. 
         [0040]    Meanwhile, the solution  2  mentioned in the present invention uses components such as hyaluronic acid, vitamin C, collagen, elastin, arbutin, kojic acid, peptide, etc. which are all related to the skin improvement and caring. In addition to that, various components may be used, and any components which will be developed may be also used. It is preferred that the solution which needs a consultation or a prescription from a medical doctor or is classified as a medical medicine for a skin disease, etc. should not be used. In any case, it is obvious that a person having ordinary skill in the art may provide various methods and components within a range that has not violated any medical act. 
       First Exemplary Embodiment 
       [0041]    The accommodation unit  10  according to the present invention includes a space  11  for storing the solution  2  inside the space  11 , a suction port  12  formed at one end for sucking only air, and a discharge port  15  disposed at the other end and being open for discharging the solution  2 . Referring to  FIGS. 1 and 2 , the accommodation unit  10  is a container configured to accommodate and discharge the solution  2  having the effects good for the skin improvements and caring and has a space  11  with a predetermined volume for storing the solution  2  in safe inside the space  11 . 
         [0042]    At this time, the accommodation unit  10  according to the present invention includes a cover  14  with a suction hole  14   a  being interposed together with a packing  13  which floats over the space  11  while sealing the solution  2  of the suction port  12   f . Referring to  FIG. 10 , the suction port  12  is configured in order for the solution  2  stored in the space to be sealed from the outside and includes a cover  14  together with the packing  13  for sucking only air so that the solution  2  may be discharged through the discharge port  15  by means of the pumping unit  20 , which will be described later. 
         [0043]    The packing  13  is made from a smooth rubber material and serves to prevent the solution  2  from being discharged to the outside by completely sealing the suction port  12  of the accommodation unit  1 , and the cover  14  is fixedly secured to the suction port  12  of the accommodation unit  10  and includes at least one suction hole  14   a  at its center for sucking air. Namely, referring to  FIG. 10 , when the solution  2  is discharged though the discharge port  15  by means of the pumping unit  20 , the packing  13  floats downward by as much as the volume of the solution  2  discharged based on the difference in pressure, and the air is sucked into the suction hole  14   a  of the cover  14  by means of the floated packing  13 . The solution  2  may be discharged while sealing from the outside the inside of the space  11  with the aid of the packing  13  disposed at the suction port  12  and the cover  14 . Here, the discharge port  15  protrudes by a predetermined distance long enough for the pumping unit  20  to be secured and includes a spiral portion on its outer circumferential surface in order for the pumping unit  20  to be detachably attached from the accommodation unit  10 . As not illustrated in the drawings, in case where the pumping unit  20  is integrally formed so that the pumping unit  20  may be impossible to detachably attach from the accommodation unit  10 , the spiral portion may be omitted. The above-mentioned integral or separate type will be described in detail later along with the pumping unit  20 . 
         [0044]    The pumping unit  20  according to the present invention is secured to communicate with the discharge port  15  of the accommodation unit  10  and includes at its central portion an airless pump  21  configured to discharge the solution  2  based on up and down movements. Referring to  FIGS. 1 and 2 , the is pumping unit  20  is secured to the discharge port  15  of the accommodation unit  10  to discharge to the outside the solution  2  accommodated in the space  11  and includes inside of the same an airless pump  21  configured to discharge the solution  2  with a predetermined pressure. 
         [0045]    Referring to  FIG. 4 , the pumping unit  20  includes a casing secured to the discharge port of the accommodation unit  10  and includes inside of the same an airless pump  21 . The airless pump  21  as a whole includes a cylinder elastically supported together with one direction valve, and a nozzle which floats upwardly and downwardly receiving an elastic force of the spring inside the cylinder. Referring to  FIG. 10 , the solution  2  flows through the valve disposed at one end of the cylinder into the interior of the cylinder, and the inputted solution  2  cannot be discharged again due to the presence of the valve. In this state, when the nozzle floats upward, the volume of the inputted solution  2  decreases and moves into the interior of the nozzle and is completely discharged to the outside. In addition, the nozzle recovers by the spring and allows the solution to flow again into the interior of the cylinder. 
         [0046]    Here, a spiral groove is formed on an inner circumferential surface of the casing to engage with the spiral portion of the discharge port, and one end is sealed to engage with one surface of the discharge port  15  in a communicative and sealing way. Of course, the accommodation unit  10  and the pumping unit  20  are integral types like the earlier described discharge port  15 , the spiral groove may be omitted, provided that for integrally engaging such components, the casing is bent toward an outer circumferential surface of the discharge port  15 . 
         [0047]    Meanwhile, when the accommodation unit  10  and the pumping unit  20  are formed in the separate type, the user can separate the accommodation unit  10  and the pumping unit  20  and then can refill the solution, but when such components are formed in the integral type, they should be discarded (recycle) after the solution  2  runs out. Namely, it is preferred that the accommodation unit  10  and the pumping unit  20  are formed in the integral type for safety in terms of the infection of bacteria, but there may be no problems even if they are refilled an used based on the compositions and use range of the solution  2 .Above all, even though they are all formed in the integral type or the separate type and are used in a disposable type, since the accommodation unit  10  and the pumping unit  20  may be easily detached (separated) in case of the separation type during the recycling procedure, the process may be greatly shortened. In any case, it is obvious that a person having ordinary skill in the art may selectively adopt and provide them based on the most efficient way in consideration of the process performance based on the manufacturing and recycling and the convenience when in use. 
         [0048]    In addition, the injection unit  30  according to the present invention is communicatively combined with the airless pump  21  of the pumping unit  20  and allows the solution  2 , which is discharged based on the up and down movements, to penetrate into the skin  1 . Referring to  FIGS. 1 and 2 , the injection unit  30  is configured to penetrate the solution, which is discharged by the pumping unit  20 , into the skin  1  and is communicatively combined with the airless pump  21 . 
         [0049]    At this time, the injection unit  30  according to the present invention includes a housing  31  formed of a fixture  31   a  and a slanted member  31   b  both combined with the airless pump  21 , a needle unit  33  formed of a needle groove  33   a  and a needle  33   b  at the bottom of the housing  31 , and a fixing unit  35  formed of a fixing groove  35   a  and a fixing protrusion  35   b  both serving to fix the needle unit  33 . 
         [0050]    Referring to  FIGS. 3 and 4 , the housing  31  is configured to guide and discharge the solution  2  stored in the accommodation unit  10  to the skin  1  and is engaged to communicate with one end of the pumping unit  20  while maintaining a sealed state. Namely, referring to  FIG. 3 , the housing  31  integrally includes a fixture  31   a  having a two-stepped shoulder for the sake of a tight fit (attachment and detachment) with one end of the airless pump  21 , and the fixture  31   a  guides for the solution  2  to be discharged by moving upwardly and downwardly the airless pump  21  in such a way to transfer a pressurizing force from the user. In addition, the housing  31  integrally includes a slanted member  31   b  which extends at a predetermined angle to the bottom of the fixture  31   a.  The slanted member  31   b  provides a space for accommodating the needle  33   b  in cooperation with the needle unit  33 . Here, the reason why the slanted member  31   b  is obliquely formed at a predetermined angle is that the needle  33   b  can guide the solution  2 , which is discharged from the airless pump  21 , to be distributed with the same quantity. This operation will be described in detail later. Of course, according to the situation given, any modification to form a straight member instead of the slanted member  31   b  is not eliminated. 
         [0051]    At this time, the housing  31  according to the present invention further includes a rubber grip  32   a  or a protrusion  32   b  on an outer circumferential surface for preventing slip while improving grip feeling. The housing  31  is configured to discharge the solution  2  stored in the accommodation unit  10  to the skin  1  and includes on its outer circumferential surface a rubber grip  32   a  or a protrusion  32   b  for the sake of safe injection in a state where the user is grabbing with hands. 
         [0052]    Referring to  FIG. 5A , the rubber grip  32   a  is formed by further attaching a flexible rubber material to the outer circumferential surface and is configured to guide for the user to smoothly grab while preventing slip. The above rubber grip  32   a  may be embossed in a vertical, horizontal or lattice-shape and may be as a whole formed in a shape of curved surfaces. 
         [0053]    Referring to  FIG. 5B , the protrusion  32   b  is formed by integrally forming a protruding portion which is engaged with the user&#39;s fingers and is configured to guide for the user to easily grab in safe with the hands when grabbing while preventing slip. In addition to the illustrated configuration, the above protrusion  32   b  may be formed in such a way that small V-grooves are continuously formed in a X-shape and may be as a whole formed in a shape of curved surfaces. 
         [0054]    Meanwhile, the rubber grip  32   a  and the protrusion  32   b  may be independently formed, but may be formed together so as to secure more improved grabbing feeling while preventing slipping. In any case, a person having ordinary skill in the art may provide various patterns and shapes and may further attach the same within a range where the grabbing feeling can be improved while preventing the slipping. 
         [0055]    In addition, the housing  31  of the present invention further includes one or more than one fixing protrusion  32   c  and slide groove  32   d  on the top of the inner circumferential surface so as to prevent any rotations by means of the pumping unit  20 . Referring to  FIG. 5A , the housing  31  is secured to the pumping unit  20  and performs up and down movements and includes a fixing protrusion  32   c  and a slide groove  32   d  so as to prevent the rotations by means of the pumping unit  20 . 
         [0056]    The fixing protrusion  32   c  is formed at an inner circumferential surface of the housing  31 , and the slide groove  32   d  is formed at an outer circumferential surface of the airless pump  21 . Namely, when the housing  31  and the airless pump  21  are engaged with each other, the fixing protrusion  32   c  and the slide groove  32   d  become engaged with each other, so the up and down movements are possible, but the rotations are impossible. Therefore, since the rotations are prevented in a state where the needle  33   b  remains penetrated in the skin  1 , it is possible to inhibit the needle  33   b  from hurting the skin  1 . 
         [0057]    Referring to  FIGS. 3 and 4 , the needle unit  33  is configured to inject the solution  2  discharged from the airless pump  21 , into the skin  1  and is tightly combined with the bottom of the housing  31 . Namely, referring to  FIG. 3 , the needle unit  33  includes a plurality of needle grooves  33   a  formed in a radial shape inside of the same, wherein the needle groove  33   a  serves to tightly fix the needle  33   b,  and the needle  33   b  serves to inject the discharging solution into the skin  1 . The above mentioned needle unit  33  is characterized in that the needle  33   b  passes from the top through the needle groove  33   a  and is fixed in a state where it protrudes from the bottom by about 0.25˜0.6 mm long and penetrates into the epidermis  1   a  or the dermis  1   b  of the skin  1 . Here, it is preferred that one end of the needle  33   b  protruding from the bottom of the needle unit  33  is formed to have a tip relatively sharp enough for the needle  33   b  to easily penetrate inside the skin  1 . Such a needle  33   b  is formed in a hollow shape having a passage at its center like an injection needle for thereby directly injecting the solution  2  discharged from the airless pump  21 , into the skin  1 . 
         [0058]    At this time, the needle groove  33   a  of the needle unit  33  according to the present invention includes a fixing groove  34   a  for fixedly inserting the needle  33   b,  and a guide groove  34   b  guiding for the needle  33   b  to be guided to the center in safe over the top of the fixing groove  34   a.  Referring to  FIG. 3 , the needle groove  33   a  is divided into a fixing groove  34   a  and a guide groove  34   b,  wherein the fixing groove  34   a  is fixed in a vertical direction for the needle  33   b  to inject the solution  2  into the skin  1 , and the guide groove  34   b  is slanted at a predetermined angle for the needle  33   b  to be bent in safe toward the center while corresponding to the slanted member  31   b.    
         [0059]    The slanted member  31   b  serves to guide for the needles  33   b  to distribute with the same quantity the solution  2  discharged from the airless pump  21 . For this, it is most preferred that the needles  33   b  are collectively disposed just below the fixture  31   a.  Above all, since the needles  33   b  are positioned closest to the fixture  31   a,  the solution  2  from the airless pump  21  may be directly transferred to the needles  33   b  shortly after the solution  2  is discharged from the airless pump  21  for thereby minimizing any consumption of the solution  2 . 
         [0060]    Like this, when it needs to secure a state where the needle unit  33  is combined with the housing  31 , the needles  33   b,  referring to  FIG. 4 , should be bent to be collected toward the center, for which the guide groove  34   b  serves to guide for the needles  33   b  to be naturally bent in safe from the fixing groove  34   a.  If the needles are bent to correspond to the slanted member  31   b  in a state where only the needles  33   b  are fixed using the fixing groove  34   a  without additionally using the guide groove  34   b,  the passage of the needle  33   b  may be blocked due to the sudden bending. Therefore, the needle groove  33   a  is divided into the fixing groove  34   a  and the guide groove  34   b  so as to fix the needles  33   b  in the bent state. 
         [0061]    In addition, the needle unit  33  of the present invention includes a plurality of needles  33   b  protruding by predetermined lengths long enough to penetrate into the skin  1 , and any one of such needles  33   b  further includes a non-protruding needle  33   c  for the contact with the surface of the skin  1 . 
         [0062]    Referring to  FIG. 3 , the needles  33   b  are fixed in a state where the needles  33   b  protrude by about 0.25˜0.6 mm long from the top, through the needle grooves  33   a  and to the bottom surface and then penetrate into the epidermis  1   a  or the dermis  1   b  of the skin  1 . Referring to  FIG. 5C , at least one needle  33   c  is configured to contact only the surface of the epidermis  1   a  of the skin  1 . Since the needles  33   b  penetrate into the skin  1 , the needles  33   b  may cause uneasy feeling to the user based on the user&#39;s character (various disorders) or the skin state (allergy or skin disease). On the other hand, since the needle  33   c  contacts with only the surface of the skin  1 , it is possible to use the needles in safe even though there are any problems. Here, even through the needles  22   b  and the needles  33  are illustrated in combination, but any ones of the needles  22   b  and the needles  33  may be independently disposed. 
         [0063]    As illustrated in  FIGS. 3 and 4 , the fixing unit  35  serves to tightly fix the needle unit  33  at the inner center of the housing  31  to communicate with the fixture  31   a  and the slanted member  31   b.  Namely, as illustrated in  FIG. 3 , a shoulder accommodating the needle unit  33  is provided at one end of the slanted member  31   b  of the housing  31 , and at least one fixing groove  35   a  and fixing protrusion  35   b  are provided so that the housing  31  and the needle unit  33  are tightly inserted at the engaging positions. Here, a fixing groove  35   a  is formed at the shoulder of the housing  31 , and the fixing protrusion  35   b  is provided at the needle unit  33 , but according to the situation, the fixing protrusion  35   b  may be formed at the shoulder of the housing  31 , and the fixing groove  35   a  may be provided at the needle unit  33 . It is preferred that the fixing groove  35   a  and the fixing protrusion  35   b  are formed with a predetermined error so that a tight insertion may be secured at the engaging portion. 
         [0064]    At this time, the fixing unit  35  according to the present invention fills a hardener  36  so as to minimize the consumption of the solution by fixing the needles  33   b  at the slanted member  31   b  of the housing  31  and blocking the space. Referring to  FIGS. 3 and 4 , the fixing unit  35  serves to tightly fix the needle unit  33  at the inner center of the housing  31  through the fixing groove  35   a  and the fixing protrusion  35   b  and to communicate the needle unit  33  with the fixture  31   a  and the slanted member  31   b.  The hardener  36  is filled so as to completely fix the needles  33   b  in a state where the needle unit  33  is combined with the housing  31  and so as to minimize the consumption of the solution  2 . 
         [0065]    Namely, referring to  FIG. 6 , an injection port (not illustrated) is formed, which communicates with the slanted member  31   b  from an outer circumferential surface of the housing  31  before or after the needle unit  33  is tightly engaged through the fixing groove  35   a  and the fixing protrusion  35   b  to the housing  31 . The hardener  36  is filled through the injection port for thereby completely blocking the space of the slanted member  31   b.  Here, the hardener  36  is formed of a predetermined material which changes into a liquid state when heat with a predetermined temperature is supplied, and when the temperature gradually decreases, the hardener  36  change into a solid state. Here, the material of such a hardener  36  is not limited to a specific material, and various is materials may be used. 
         [0066]    When the hardener  36  is filled into the slanted member  31   b  the housing  31 , the needles  33   b  may be completely fixed, and the sealing state from the outside may be maintained. Above all, since the space of the slanted member  31   b  is completely blocked, the solution  2  discharged from the airless pump  21  may be directly transferred only to the needles  33   b  for thereby preventing any consumption of the solution  2 . 
         [0067]    Meanwhile, the housing  31  according to the present invention further includes a safety cap  37  with an engaging protrusion  37   a  being interposed so as to block any inputs of bacteria or impurities while protecting the needle unit  33 . Referring to  FIGS. 1 to 3 , the safety cap  37  is combined with an outer circumferential surface of the housing  31  for thereby hiding, from the outside, the needles  33   b  protruding from the needle unit  33 . Namely, since the needles  33   b  penetrate into the epidermis  1   a  or the dermis  1   b  of the skin  1 , protecting (blocking) from bacteria or impurities is a very important factor. Therefore, it needs to protect the skin  1  from various infections in such a way to engage the safety cap  37  onto an outer circumferential surface of the housing  31  before and after the use. 
         [0068]    The safety cap  37  includes engaging protrusions  31   c  and  37   a  at the inner and outer circumferential surfaces where the safety cap  37  is engaged with the housing  31  so as to increase the force of the engagement with the housing  31 . Namely, when the safety cap  37  is inserted into the outer circumferential surface so as to protect the needles  33   b  exposed from the housing  31 , the separation of the engaging protrusion  37   a  of the safety cap  37  is prevented by the engaging protrusion  31   c  of the housing  31 . Of course, in addition to the above configuration, the engaging protrusion and the engaging groove may be formed at the inner and outer circumferential surfaces where the safety cap  37  and the housing  31  are engaged with each other, and any configuration wherein a tight fitting is secured using a predetermined error between the inner and outer circumferential surfaces without forming the engaging protrusions  31   c  and  37   a  of the housing  31  and the safety cap  37  is not excluded. 
         [0069]    When in use based on the uses as in  FIGS. 10 and 12 , the injection mechanism is a tool which is capable of injecting the solution having predetermined efficacy into the epidermis  1   a  and the dermis  1   b  of the skin  1 , but the injection mechanism may be provided in a state where it is combined with the pumping unit  20  wherein the solution  2  is filled in the accommodation unit  10  when manufacturing the product. In addition, the injection unit  30  may be provided in a state where it is separated from the pumping unit  20 , and the safety cap  37  is coupled. Namely, the multiple pumping units  20  engaged with the accommodation unit  10  may be stored in the case (packing box), and the injection unit  30  may be vacuum-packed using a separate plastic material, etc. and may be provided in an encased state in the case together with the accommodation unit  10  and the pumping unit  20 . Of course, all the accommodation unit  10  and the pumping unit  20  and the injection unit  30  may be manufactured in the assembled state along with the solution  2  and may be stored in the case and may be provided. 
         [0070]    First, the user purchases the mechanism of the present invention filled with the solution  2  which has an effect good for skin improvements at a cosmetic sale shop or dermatology or a beauty-related shop. Thereafter, the user removes the packing of the injection unit  30  separately encased along with the accommodation unit  10  and the pumping unit  20  and assembles the pumping unit  20  and the injection unit  30 . At this time, if the accommodation unit  10 , the pumping unit  20  and the injection unit  30  all have be assembled and provided, the above-described procedures may be omitted. 
         [0071]    As illustrated in  FIG. 10 , the user presses downward the pumping unit to activate in a state where the injection unit  30  contacts with a predetermined portion of the skin  1  with one hand holding the accommodation unit  10 . At this time, it is preferred that the user moves upwardly and downwardly the pumping unit  20  one to three times in a state where it is not in contact with the skin  1 , so the solution  2  is fully filled into the needles  33   b.  Through the above-described procedures, the needles  33   b  are penetrated in the epidermis  1   a  and the dermis  1   b  of the skin  1  in the first stage as in  FIG. 12A . 
         [0072]    The skin  1  of the human body is generally divided into the epidermis  1   a  and the dermis  1   b.  Although being different a little according to their positions, the epidermis  1   a  as a whole is about 0.25 mm thick, and the dermis  1   b  is about 0.35 thick. Namely, the user does not feel any pain even though the needle  33   b  penetrates into the dermis  1   b  of the skin  1 , but feels only a touch, so there is not any problem when in use. Here, since the skin  1  is generally influenced based on the substances residing at the dermis  1   b,  it is preferred that the needles  33   b  penetrate through the epidermis  1   a  to the portion where the dermis  1   b  is present. 
         [0073]    Thereafter, as illustrated in  FIG. 10 , when the pumping unit  20  starts to operate, the solution  2  of the accommodation unit  10  is discharged from the needles  33   b  and is penetrated into the dermis  1   b  in the second stage as in  FIG. 12B . Namely, as illustrated in  FIG. 10 , the solution  2  is injected into a predetermined portion of the skin  1  where the user wants to. Though being different based on the volume of the accommodation unit  10 , the solution may run out after the uses of about 20 to 50 times. Since the solution  2  is injected in a state where the solution  2  having predetermined efficacy is directly penetrated into the skin  1 , about 90˜99% of absorption rate may be secured, which would result in reliable and good effects. Above all, it is possible to secure good effects with a small quantity of solution tanks to the high absorption rate, which minimizes the cost-bearing of the customer. 
         [0074]    Meanwhile, the mechanism of the present invention the use of which is ended may be separated and discharged (discarded) for the purpose of recycling, but the accommodation unit  10 , the pumping unit  20  and the injection unit  30  may be all separated and immersed in alcohol and may be sterilized by ultraviolet ray and may be dried, and then the accommodation unit  10  may be filled with the solution  2  and may be reused. 
       Second Embodiment 
       [0075]    The handle unit  10  of the present invention is constituted in a protrusion shape for the user to grab and includes an engaging protrusion  11  which has at least on shoulders at the bottom. Referring to  FIG. 7 , the handle unit  10  serves to guide for the solution  2  having outstanding effects for skin improvements and skin caring, to be discharged and injected into the skin  1 . The handle unit  10  includes at its bottom an engaging protrusion  11  which protrudes by a predetermined length long enough for the user to easily grab. 
         [0076]    As illustrated in  FIG. 7 , the engaging protrusion  11  is guided to engage with the packing unit  20  which will be described later. Since the engaging protrusion  11  may be attached in engagement with the packing unit  20 , but may be detached, if necessary, it is preferred that the engaging protrusion  11  includes at least one shoulder. Namely, the engaging protrusion  11  may be formed in various structures within a range where the packing unit  20  would not be disengaged from the engaged state. 
         [0077]    At this time, the handle unit  10  according to the present invention includes at its outer circumferential surface a rubber grip  15  or a protrusion  16  which makes it possible to prevent slip while improving grip feeling by a user. The handle unit  10  serves to inject the solution  2  into the skin  1  in cooperation with the packing unit  20  and the injection unit  30 . As illustrated in  FIG. 9 , a rubber grip  15  or a protrusion  16  is formed on an outer circumferential surface so that a pressurizing motion may be easily performed against the skin  1  in a state where the user is grabbing with hands. 
         [0078]    As illustrated in  FIG. 9A , the rubber grip  15  is made by further attaching a flexible rubber material to an outer circumferential surface and serves to guide for the user to softly grab with a predetermined cushion and to prevent slip. In addition to the configuration as illustrated, the rubber grip  15  may be embossed in a vertical shape, a horizontal shape or a lattice shape or mat be formed as a whole in a shape of curved surfaces. 
         [0079]    Referring to  FIG. 9B , the protrusion  16  includes, on its outer circumferential surface, integrally protruding portions engaged with the user&#39;s fingers and serves to guide for the user to grab in safe when grabbing with hands without any problems and to prevent any splitting. In addition to the configuration illustrated, the above protrusion  16  mat be formed by continuously formed small V-grooves in a X-shape and may be as a whole formed in a shape of curved surfaces. 
         [0080]    Meanwhile, the rubber grip  15  and the protrusion  16  may be independently formed, but may be formed in combination so as to improve grip feeling and prevent slip. In any case, a person having ordinary skill in the art may form various shapes and patterns within a range wide enough to improve grip feeling and prevent slip or more rubber grip or protrusion may be attached. 
         [0081]    The packing unit  20  according to the present invention is detachably disposed at the bottom of the handle unit  10  and includes an engaging groove  21  which is fixedly engaged with the engaging protrusion  11 . As illustrated in  FIG. 7 , the packing unit  20  is configured to generate a predetermined pressure to inject the solution into the skin  1  in cooperation with the handle unit  10 , and one side of the same is engaged with the engaging protrusion  11  for thereby securing attachment and detachment. Namely, the packing unit  20  is as a whole made from a rubber material and seals for the solution  2  to be stored into the injection unit  30  and generates pressure to the solution  2  by receiving a pressurizing motion of the handle unit  10  and discharges (injection) to the outside. The packing unit  20  is basically made from a material having good sealing force, and it is preferred that the packing unit  20  is made from a material which is harmless and not affected by the compositions of the solution  2 . 
         [0082]    In addition, the injection unit  30  of the present invention is sealingly engaged with the packing unit  20 , and discharges the solution  2  and penetrates into the skin  1  based on the pressurizing motion of the handle unit  10 . As illustrated in  FIGS. 7 and 8 , the injection unit  30  discharges the solution  2  and penetrates the same into the skin  1  based on the pressurizing motion of the handle unit  10  and is constituted to cooperate with the packing unit  20  while accommodating the solution  2 . 
         [0083]    At this time, the injection unit  30  according to the present invention includes a housing  31  which is combined with the packing unit  20  and includes a fixture  31   a,  a slanted member  31   b  and a space  31   d  for accommodating the solution  2 , a needle unit  33  which includes needle grooves  33   a  and needles  33   b  at the bottom of the housing  31 , and a fixture  35  which includes a fixing groove  35   a  and a fixing protrusion  35   b  for fixing the housing  31  and the needle unit  33 . 
         [0084]    As illustrate in  FIG. 8 , the injection unit  30  has the same reference number as the injection unit  30  according to the first exemplary embodiment of the present invention, so the detailed operation and descriptions thereof will be omitted, provided that the space (not given the reference number) of the housing  31  according to the first exemplary embodiment is for the up and down motions in cooperation with the pumping unit  20 , and the space  31   d  of the housing  31  according to the second exemplary embodiment is to accommodate the solution  2 . Namely, in a state where the solution  2  is accommodated in the pace  31   d  of the housing  31 , as illustrated in  FIG. 11 , the handle unit  10  combined with the packing unit  20  is inserted, and when the pressurizing motion is performed with respect to the skin  1  in a state where the user is holding the handle unit  10 , as illustrated in  FIG. 12 , the needles  23   b  penetrate into the skin  1 , and at the same time the solution  2  is discharged with a predetermined pressure and is injected. 
         [0085]    As described above, the present invention is constituted in a stamp type light, thin, short and small structure, so the manufacturing cost may be lowered, and every home may easily and conveniently use at a lower price. Since the solution may be uniformly and directly injected in a state where the needles are penetrated in the epidermis and dermis of the skin for thereby minimizing any loss of the solution and maximizing the effects. 
         [0086]    The present invention is not limited to the disclosed exemplary embodiments, and it is obvious that a person having ordinary skill in the art might variously modify and change without departing from the concept and scope of the present invention. Therefore, such changes or modifications belong to the scope of the claims of the present invention. 
         [0000]    
       
         
               
             
               
               
               
             
               
               
               
             
               
               
               
             
               
               
               
             
               
               
               
             
               
               
               
             
               
               
             
           
               
                   
               
               
                 Legends of Reference Numbers 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1: skin 
                 1a: epidermis 
                 1b: dermis 
               
             
          
           
               
                 2: solution 
                 10: accommodation unit 
                 11: space 
               
             
          
           
               
                 12: suction port 
                 13: packing 
                 14: cover 
               
             
          
           
               
                 14a: suction hole 
                 15: discharge port 
                 20: pumping unit 
               
               
                 21: air less pump 
                 30: injection unit 
                 31: housing 
               
             
          
           
               
                 31a: fixture 
                 31b: slanted member 
                 31c: engaging protrusion 
               
             
          
           
               
                 33: needle unit 
                 33a: needle groove 
                 33b: needle 
               
               
                 34a: fixing groove 
                 34b: guide groove 
                 35: fixing unit 
               
               
                 35a: fixing groove 
                 35b: fixing protrusion 
                 36: hardener 
               
             
          
           
               
                 37: safety cap 
                 37a: engaging protrusion