JP2007037706A - Dermal needle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dermal needle by which the supporting portion of the dermal needle need not to be secured to a skin until a biodegradable material being a main component of the dermal needle is decomposed and the skin has no rash. <P>SOLUTION: The dermal needle has a rodlike portion 2 and a grip portion 3 connected to the rodlike portion 2 and is constituted by forming a plurality of needles 1 including the biodegradable material as one component in the outer periphery (a sheetlike supporting portion) of the rodlike portion 2 and provides the dermal needles 1 into the skin while rolling the rodlike portion on the skin gripping the grip portion 3. Consequently, the dermal needle by which there is no need to secure the supporting portions of the dermal needle 1 to the skin and the skin has no rash can be obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a skin needle tool used in medicine, makeup, and the like.

  Conventionally, in the medical and cosmetic fields, structures having fine needles for imparting a functional material painlessly to the stratum corneum of the skin have been devised. For example, as a skin needle, one or a plurality of needles arranged on a sheet-like support portion having an adhesive layer has been devised. (For example, Patent Document 1)

Design Registration No. 1227632

  However, the painless needle disclosed in this document uses an inorganic material that cannot be decomposed by the human body, such as metal or silicon, as the needle material. Therefore, if the needle for skin is broken after being stabbed, it remains on the skin. Has the problem of being harmful to the human body. Furthermore, since the adhesive layer part of the support part touches the skin, there is a problem that the skin is irritated.

  On the other hand, as a skin needle, a structure and manufacturing method of a needle having a shape in which one or more functional materials (substances) are mixed with a biodegradable material are arranged. (For example, Patent Document 2)

JP 2003-238347 A

  However, the skin needle disclosed in this document is the main component of the skin needle after the skin needle is stabbed into the skin in order to diffuse the functional material contained in the skin needle into the stratum corneum of the skin. There is a problem that it is necessary to fix the support portion of the skin needle to the skin until a certain biodegradable material is decomposed.

  Therefore, the present invention provides a biodegradable, which is a main component of a skin needle after the needle for skin is harmless to the human body when the skin needle is broken after being stabbed. It is an object of the present invention to provide a skin needle that does not need to be fixed to the skin until the material is decomposed and that does not get covered with the skin.

  The skin needle tool of the present invention has a rod-like portion and a grip portion connected to the rod-like portion, and includes a plurality of biodegradable materials as components on the outer periphery (sheet-like support portion) of the rod-like portion. The needle is formed. With this configuration, it is possible to apply the skin needle to the skin while holding the grip portion and rolling the rod-shaped portion onto the skin.

  By using polylactic acid or maltose as the main component of the biodegradable material, it becomes a safe skin needle tool that is harmless to the human body.

  Further, by forming a needle mainly composed of a biodegradable material on the sheet member and winding the sheet member around the rod-shaped member, the skin needle can be placed on the skin while the rod-shaped portion is rolled on the skin. Can be given inside. Accordingly, it is not necessary to fix the support portion of the skin needle to the skin, and it is possible to provide a skin needle that does not get covered with the skin.

  The present invention relates to a biodegradable material that is harmless to the human body when the skin needle is broken after being stabbed, and is the main component of the skin needle after the skin needle is stabbed into the skin. It is not necessary to fix the support portion of the skin needle to the skin until the skin is decomposed, and it is possible to provide a skin needle that does not touch the skin.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a skin needle (hereinafter, also referred to as “micropile”) produced in the present embodiment. The skin needle is provided with a plurality of micropiles 1 on the side surface of a cylindrical rod-shaped portion 2, and a grip portion 3 is disposed on the end surface of the rod-shaped portion 2.

  In this embodiment, the rod-shaped part 2 is a cylinder having a diameter of about 10 mm and a length of about 30 mm, and the gripping part 3 is a cylinder having a diameter of about 5 mm and a length of about 100 mm. The material of the rod-shaped part 2 used the maltose which is a biodegradable material. The material of the rod-shaped part 2 may be polylactic acid in addition to maltose. The material for the grip 3 was wood. The material of the grip portion 3 may be paper, plastic, etc. in addition to wood.

  The shape of the rod-shaped portion 2 may be a polygonal column such as a triangular column or a quadrangular column in addition to a column.

  The micropile 1 is a circular cone having a circular cross section, and has a diameter of 0.1 to 80 μm and a length of 0.1 to 1 mm. The reason why the diameter is set to 0.1 to 80 μm is that the human skin does not feel pain to a needle having a diameter of 80 μm or less.

The cross section of the micropile 1 may be a polygon such as a triangle or a rectangle other than a circle. As the material of the micropile 1, maltose, which is a biodegradable material, was used. For this reason, after piercing the skin, a skin needle that does not adversely affect the human body can be produced. In addition to maltose, biodegradable materials such as polylactic acid can be used for the skin needle material.
Further, the micropile 1 may be formed only in a partial region of the outer periphery of the rod-like portion.

  The micropile 1 can contain a functional material. For example, Vitamin C effective for removing wrinkles on skin, dyeing agent effective for removing skin wrinkles, insulin effective for treating diabetes, indomethacin effective for muscle pain, etc. are mixed with biodegradable material to make micropile 1 Functional materials can be included.

  FIG. 2 shows a micropile pulling device 4 for producing the micropile 1. As shown in FIG. 2, a micropile pulling device 4 as a skin needle manufacturing device according to the present embodiment is installed on a base 6 and forms a chamber 5a. The humidity maintaining device 7 as a humidity maintaining means for maintaining the humidity in the chamber 5a at 60% or less, the rod-shaped part (material) 2 which is the material of the micropile 1 installed in the chamber 5a, and the gripping part 3 are installed. A rotating mechanism 12 as a material installation member, a hot air outlet 8 as a member temperature changing means for changing the temperature of the rod-shaped part (material) 2, a column part 10 fixed to the base 6, and a column part 10 A moving part 11 supported by the column part 10 so as to be movable in the directions indicated by the arrows 11a and 11b, a heater substrate 13 fixed to the moving part 11, a heater 14 for changing the temperature of the heater substrate 13, and a heater Substrate installed on substrate 13 A plurality of pins 15 (for example, about 50 to 1000 pins) for attaching a part of them, a drive mechanism 16 for moving the moving part 11 along the pillar part 10, a heater 12, a heater 14, and hot air blowing A computer 9 is provided as control means for controlling the operation of the mouth 8, the rotation mechanism 12, and the drive mechanism 16.

  The heater substrate 13 is a square having a size and shape of about 5 to 50 mm square where a plurality of pins 15 are installed. The heater 14 changes the temperature of the pin 15 indirectly through the heater substrate 13 by changing the temperature of the heater substrate 13 and constitutes a pin temperature changing means.

  The plurality of pins 15 are linearly installed on the heater substrate 13 at substantially equal intervals, and are formed of a metal having high thermal conductivity. In FIG. 2, only five pins 15 are drawn because of simplification in consideration of visibility.

  The drive mechanism 16 moves the pin 15 installed on the heater substrate 13 fixed to the moving part 11 with respect to the rod-like part 2 by moving the moving part 11 along the column part 10. Yes.

  Next, the operation of the micropile lifting device 4 will be described. The humidity maintaining device 7 always maintains the humidity in the chamber 5a within a predetermined range. First, in the micropile pulling device 4, the rod-like portion 2 is installed on the rotating mechanism 12 via the grip portion 3.

(Material melting process)
When the operator of the micropile lifting device 4 instructs the computer 9 to manufacture the micropile, the computer 9 sets the surface temperature of the rod-like portion 2 to about 100 ° C. by the hot air 8a blown from the hot air blowing port 8. The surface of the rod-like portion 2 is dissolved by controlling so as to maintain the same.

(Material adhesion process)
Next, the computer 9 moves the moving part 11 along the column part 10 in the direction indicated by the arrow 11a by the drive mechanism 16, thereby causing the pin 15 installed on the heater substrate 13 fixed to the moving part 11 to move. As shown in FIG. 3A, the dissolved rod-shaped portion (dissolved material) 2 is brought into contact with the pin 15, and a part of the rod-shaped portion 2 is adhered to the pin 15. Here, the micropile pulling device 4 is formed with high accuracy so that the plurality of pins 15 installed on the heater substrate 13 are in uniform contact with the dissolved material 2.

(Molding process)
Next, the computer 9 maintains the temperature of the pin 15 at about 120 ° C. via the heater substrate 13 by the heater 14 while controlling the surface temperature of the rod-like portion 2 at about 100 ° C. by the hot air outlet 8. After the control is performed, the driving mechanism 16 moves the moving unit 11 along the column part 10 in the direction indicated by the arrow 11b at a rate of about 500 μm to about 5 mm at about 2 mm / sec, thereby fixing the heater fixed to the moving unit 11 As shown in FIG. 3 (b), the pin 15 fixed to the substrate 14 is separated from the protruding portion 2b of the rod-like portion 2 which is protruded by the tension of the attached portion 2a attached to the pin 15, and the protruding portion 2b. Is stretched to form a substantially conical micropile 1 having a length of about 500 μm. Since the plurality of pins 15 are linearly arranged on the heater substrate 13 at substantially equal intervals, a plurality of protruding portions 2b are linearly formed on the rod-like portion 2 at substantially equal intervals.

(Separation process)
Finally, the computer 9 controls the heater 15 to lower the temperature of the pin 15 via the heater substrate 13 and maintain it at about 100 ° C., and then the drive mechanism 16 moves the moving part 11 along the pillar part 10 with an arrow. The pin 15 installed on the heater substrate 13 fixed to the moving part 11 is moved from the protruding part 2b of the rod-like part 2 as shown in FIG. The attached portion 2 a attached to the pin 15 is separated from the protruding portion 1 b formed as the micropile 1.

(Material rotation process)
Thereafter, the rod-like portion 2 is rotated about 5 degrees in the direction of the arrow 12a by the rotating mechanism 12 via the grip portion 3. The steps from the material melting step to the separation step are performed again to form the micropile 1.

  The micropile 1 is formed on the entire side surface of the rod-like portion 2 by performing the cutting step from the material melting step about 72 times.

  As described above, as shown in FIG. 1, the micropile 1 containing maltose as a main component can be manufactured.

  By pressing and rubbing the manufactured skin needle with the grip portion 3 onto the skin of the human body, the micropile 1 selectively remains in the skin, and the functional material is removed from the skin without fixing the rod-shaped portion 2. It can be administered or given inside.

  In the embodiment described above, the micropile is directly formed on the outer periphery of the rod-shaped member. However, as another embodiment, a micropile mainly composed of a biodegradable material is previously formed on the sheet member, and then the sheet is formed. The member may be wound around the rod-shaped member and fixed with an adhesive or the like.

1 is an external perspective view of a skin needle according to an embodiment of the present invention. Side surface sectional drawing of the micropile raising apparatus for producing the micropile of the skin needle | hook which is one embodiment of this invention (A) Side view of a part of the substrate in the material attaching process of the micropile pulling apparatus shown in FIG. 2 (b) Side view of a part of the substrate in the forming process of the micropile pulling apparatus shown in FIG. 2 (c) FIG. Side view of a part of the substrate in the separation process of the micropile pulling device shown in

Explanation of symbols

1 Micropile 2 Bar-shaped part (support part for skin needle)
DESCRIPTION OF SYMBOLS 3 Gripping part 4 Micropile raising device 6 units 7 Humidity maintenance device 8 Hot air outlet 9 Computer 12 Rotating mechanism 13 Heater substrate 14 Heater 15 Pin 16 Drive mechanism

Claims (4)

A skin needle tool having a rod-shaped portion and a grip portion connected to the rod-shaped portion, and a plurality of needles containing a biodegradable material as a component are formed on an outer periphery of the rod-shaped portion. The skin needle tool according to claim 1, wherein the main component of the biodegradable material is polylactic acid or maltose. A needle for skin, wherein a needle mainly composed of a biodegradable material is formed on a sheet member, and the sheet member is wound around a rod-shaped member. The skin needle tool according to claim 2 or 3, wherein the needle contains a functional substance.

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