JP7223923B2 - hair removal needle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a depilatory needle for a high-frequency depilatory device for depilating unwanted hair from human skin.

A high-frequency hair removal device has been developed to remove unwanted hair from the human body. This depilatory device is designed so that a depilatory needle provided at the tip thereof is inserted into a pore of the human body, and a high-frequency current is instantaneously applied to burn off the root of the hair by the heat generated. Therefore, the tip of the depilatory needle is sharply pointed (see Japanese Utility Model Laid-Open No. 58-179110).

Japanese Utility Model Laid-Open No. 58-179110

The hair removal needle described in Japanese Utility Model Laid-Open No. 58-179110 has a sharp needle tip,
When it is inserted into a pore, it reaches the hair root smoothly, but in the case of a novice operator, it often happens that the skin other than the pore is pierced by mistake when piercing the pore. At that time, since the tip of the conventional depilatory needle is sharp, it easily penetrates deeply into the patient's skin and may injure the patient's skin. As a result, the patient feels pain and avoids the hair removal surgery.

The present inventor has improved the above-mentioned drawbacks, and improved the tip shape of the epilation needle so that the tip of the epilation needle does not pierce the skin when the operator accidentally sticks the epilation needle into the skin other than the pores. is.

In order to solve the above problems, a hair removal needle for a high-frequency hair removal device of the present invention is provided with a conical pore insertion portion that is continuous with the tip of a main body round bar of the hair removal needle and gradually tapers toward the needle tip, The tip of the pore insertion part is cut perpendicular to the axis to form a flat circular tip. The actual size of the cone-shaped pore insertion part is about 2.5 mm in length, and the diameter of the thicker base is 0.15 mm to 0.23 mm, depending on the type of hair removal needle.

The diameter of the circular tip is set to a size that allows it to easily penetrate into pores, but exerts resistance to the extent that it cannot easily penetrate human skin when it is pierced by the force of a human fingertip. It is A specific circular tip diameter is preferably 0.07 mm±0.01 mm.

The surface of the pore-inserting portion is mirror-finished by electropolishing, and the surface is covered with an insulating film separated from the distal end portion by a predetermined distance. As for the type of insulating film, a synthetic resin film, a ceramic film, or the like is used.

In the hair removal needle for a high-frequency epilator of the present invention, a flat circular tip is formed at the tip of the conical pore insertion part that tapers gradually toward the tip of the needle. Even if the tip of the hair removal needle is pressed against the skin, the tip is provided with a circular tip that is large enough to exert resistance to the extent that it cannot be easily penetrated by the force of a human fingertip. It is possible to prevent the skin from breaking through and entering the inside, and the skin is not damaged, resulting in no pain for the patient. In addition, even if the operator traces the skin around the pore with the tip of the depilation needle to search for the pore, the skin is not pierced, so the pore can be easily found, and work efficiency can be improved. There is also an effect.

Fig. 2 is a cross-sectional view of a main part showing a state in which the hair removal needle of the present invention is attached to the hair removal needle fixing member; FIG. 2 is a cross-sectional view showing a state in which the hair removal needle of the present invention is connected to the hair removal needle fixing member and the intermediate connecting member; Sectional drawing of a high frequency epilator. Block diagram of a high frequency generator. FIG. 10 is a comparative explanatory diagram of the shape of a conventional hair removal needle for a high-frequency epilator and the hair removal needle of the present invention. Explanatory drawing which shows the state which inserted the hair-removal needle into the pore.

BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will now be described with reference to examples.

FIG. 1 shows a state in which a depilation needle in one embodiment of the present invention is attached to a depilation needle fixing member. A depilation needle 1 has a conical pore inserting portion provided continuously to a base portion 11 made of a round bar. 12 and a flat circular tip 13 formed by cutting the tip perpendicular to the axis. This hair removal needle 1
is inserted into the insertion hole 21 of the depilation needle fixing member 2 and fixed by caulking. The hair removal needle fixing member 2 is formed of an L-shaped conductive member as shown in FIG. An insulating coating 23 is applied to the surface thereof, and the tip of the insulating coating 23 extends to the exposed portion of the pore insertion portion 12 of the depilatory needle. The base 22 of the hair removal needle fixing member 2 is inserted into an insertion hole 31 provided at the tip of the intermediate connecting member 3 made of a conductive member and fixed by caulking. A base portion 32 at the other end of the intermediate connecting member 3 is detachably inserted into a concave hole 42 of a split base 44 of the high-frequency epilator 4 shown in FIG.

As shown in FIG. 3, the high-frequency hair remover 4 has a holder 45 made of insulating plastic and a split pedestal 44 formed from a conductive lot. The base portion 32 of the intermediate connecting member 3 is inserted into the hole 42, and the insulating cap 43 is separated from the pedestal 44.
It is fixed by putting it on and screwing it. The center of the holder 45 is hollowed out to form a hollow hole 46.
is formed. A cord 47 is run through this hollow hole 46 and its tip is connected to the electric controller 5 shown in FIG.

The electric controller 5 comprises a high frequency generator 51 , a high frequency transmitter 52 and an amplifier 53 and is connected to the high frequency epilator 4 through a cord 54 . In the figure, reference numeral 55 denotes an electrode plate which is held by the patient during the operation to conduct electricity in the patient's body. 56 is a foot switch.

FIG. 5 shows a comparison of the actual dimensions in order to show that the shape of the epilation needle of the present invention is different from conventional commercially available epilation needles.
That is, the length a of the taper portion 71 of the conventional commercially available hair removal needle (A) is 0.4 mm, and the diameter b of the rod 7 is 0.15 mm to 0.23 mm.
Since the slope of the tapered portion 71 is expressed by b×1/2÷a, the slope S1 is 18/100 to 2
8/100.
On the other hand, in the hair removal needle (B) of the present invention, the length c of the tapered portion (pore insertion portion 12) is 2.5 mm.
The diameter d of the rod portion (base portion 11) is 0.15 mm to 0.23 mm, and the diameter e of the circular tip portion 13
is 0.07 mm.
Since the slope S2 of the tapered portion of the hair removal needle of the present invention is (de)×1/2÷c, the slope S2
is 1.6/100 to 3.2/100.
As described above, the tapered portion of the epilation needle of the present invention has an extremely gentle gradient compared to the conventional epilation needle, so that the resistance when inserting the epilation needle into the pore is extremely gentle, thus relieving the pain of the patient. be able to.

FIG. 6 shows a state in which the hair removal needle 1 is inserted into a pore of a patient. When the foot switch 56 of the high-frequency generator 5 is stepped on in this state, a high-frequency current instantaneously flows through the hair root portion 63 to generate high heat, burn off the hair root 63, and remove the hair.

During this hair removal operation, if the tip of the hair removal needle 1 is accidentally pierced into the skin 6 near the pore 61, the flat area of the circular tip portion 13 of the tip of the hair removal needle is such that it cannot be easily penetrated by the force of a human fingertip. Because it is sized to exert resistance, the needle tip cannot pierce the skin and does not damage the patient's skin.

As described above, the hair removal needle of the present invention does not damage the patient's skin, so when looking for a pore, the needle tip can be lightly touched on the patient's skin and traced to find the pore. It is possible to facilitate the finding work and improve the efficiency of the depilation work.

1 Epilation Needle 11 Base 12 Pore Insertion Portion 13 Circular Tip 2 Epilation Needle Fixing Member 3 Intermediate Connecting Member 4 High Frequency Epilator 42 Recessed Hole 43 Cap 44 Split Base 45 Holder 5 Electric Controller 6 Skin 61 Pore 62 Hair 63 Hair Root

Claims (5)

A cone-shaped pore insertion part that tapers gradually toward the tip of the needle is provided continuously from the tip of the round bar body of the hair removal needle, and the tip of the pore insertion part is cut at right angles to the axis to form a flat circular tip. An epilation needle for a high-frequency epilator, characterized by: The diameter of the circular tip is set to a size that allows it to easily penetrate into pores, but exerts resistance to the extent that it cannot easily penetrate human skin when it is pierced by the force of a human fingertip. The depilatory needle for a high-frequency epilator according to claim 1, characterized in that the depilatory needle is 3. The depilatory needle for a high-frequency depilator according to claim 1, wherein the diameter of the circular tip is 0.07 mm±0.01 mm. The depilatory needle for a high-frequency epilator according to any one of claims 1 to 3, wherein the pore-inserting portion has a mirror-finished surface processed by electropolishing. 5. A depilation device for a high-frequency epilator according to claim 1, wherein the pore insertion portion is separated from the tip portion by a predetermined distance and covered with an insulating film on the surface thereof. needle.

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