Microneedle roller

Abstract

The invention relates to the technical field of microneedle rollers, in particular to a microneedle roller capable of applying electric signals to the skin of a user and stimulating the skin. Comprises: a roller which is provided with a plurality of microneedles along the outer circumference and has a through-hole formed in the central axis; a signal generation unit that generates a plurality of signals and supplies the signals to the microneedles; a rotating shaft part provided in the through hole and including a conductor that transmits the plurality of signals generated by the signal generating part to the microneedle; and a handle, one end of which is rotatably connected with the rotating shaft part. The present invention provides a microneedle roller which promotes skin blood circulation of a user by applying an electric signal to a microneedle through a rotating shaft portion provided on a central shaft of the roller, thereby improving collagen formation in a corium layer.

Description

Technical Field

[0001] The present invention relates to the technical field of microneedle rollers, and in particular to a microneedle roller capable of applying electrical signals to a user's skin and stimulating the skin. Background Art

[0002] Generally speaking, skin tissue can be divided into the epidermis (stratum corneum), dermis and subcutaneous fat. Blood vessels pass through the epidermis and dermis and are distributed in the subcutaneous fat.

[0003] At this time, the dermis layer related to wrinkles constitutes the bottom layer of the epidermis. As aging progresses, the amount of collagen in the dermis layer gradually decreases, resulting in dry skin and increased wrinkles.

[0004] Therefore, in order to prevent wrinkles or maintain skin elasticity, it is necessary to continuously replenish consumed collagen or inject new collagen.

[0005] The method of supplying collagen is generally to apply or spray a solvent such as a gel or lotion containing nutrients such as vitamin C and peptides necessary for collagen formation on the skin. However, there is a problem that the possibility of the solvent penetrating the epidermis of the skin is only 0.3% of the total content.

[0006] A microneedle roller has been disclosed that stimulates the skin or forms microchannels in the skin tissue, effectively supplying nutrients such as vitamin C and peptides to the dermis containing collagen.

[0007] Figure 1 This is a perspective view showing an example of a conventional microneedle roller. Figure 2 for Figure 1 An exploded perspective view of the roller is shown.

[0008] Reference Figure 1 and Figure 2 It can be seen that the microneedle roller 1 of the prior art includes: a plurality of circular plates 12 having a through hole 13 formed in the center and stacked along the axial direction; a roller 10 including microneedles 14 radially arranged on the periphery of the circular plate 12 or on one side of the circular plate; and a handle 20, one end of which is rotatably connected to a rotating shaft 18, which is arranged in a through hole 13 formed on the central axis of the roller 10.

[0009] Wherein, shaft support plates 16 may be provided at both side ends of the stacked circular plates 12. In addition, spacers may be provided between the circular plates 12 according to user needs.

[0010] The user grasps the handle 20 of the microneedle roller 1 and places it against the target area. The user then operates the handle 20 to roll the roller 10 along the target area, causing the microneedles 14 to form micropathways, or microchannels, in the skin tissue. If the user then applies or sprays a solution, such as a gel or lotion, containing nutrients to the target area, the nutrients are delivered to the dermis through the microchannels, promoting collagen formation.

[0011] The conventional microneedle roller 1 only utilizes microchannel formation and the nutrient supply based thereon, and thus has a problem of limited nutrient supply effect. Summary of the Invention

[0012] The present invention is intended to solve the above-mentioned problem and its purpose is to provide a microneedle roller that applies electrical signals to the microneedles by a rotating shaft portion arranged on the central axis of the roller to promote the user's skin blood circulation, thereby increasing collagen formation in the dermis.

[0013] Another object of the present invention is to provide a microneedle roller that can apply electrical signals to the microneedles only through a portion of the rotating shaft portion provided on the central axis of the roller, thereby allowing electrical signals to be applied only to the areas required by the user.

[0014] Another object of the present invention is to provide a microneedle roller that can generate a plurality of different signals and then apply the signals to the user through microneedles arranged at different positions on the roller.

[0015] In order to achieve the above-mentioned objectives, the present invention provides a microneedle roller, comprising: a roller, which has a plurality of microneedles arranged along the periphery and a through hole formed on the central axis; a signal generating portion, which generates a plurality of signals and supplies them to the microneedles; a rotating shaft portion, which is arranged in the through hole and includes a conductor that transmits the plurality of signals generated by the signal generating portion to the microneedles; and a handle, one end of which is rotatably connected to the rotating shaft portion.

[0016] Furthermore, the roller includes: a plurality of circular plates, on which a plurality of microneedles are radially arranged from the center toward the outside, each circular plate has a through hole formed on the central axis, and the plurality of circular plates are stacked along the axial direction.

[0017] Furthermore, it also includes a first gasket arranged between the circular plates.

[0018] Furthermore, one end of the microneedle protrudes from the outer circumference of the roller, and the other end is arranged on the inner circumference of the through hole.

[0019] Furthermore, the rotating shaft portion includes: a plate-shaped insulator; and a conductor, wherein the conductor is composed of a semi-cylindrical structure corresponding to the inner circumferential shape of the through hole and is provided on both sides of the insulator.

[0020] Furthermore, the rotating shaft portion includes: an insulator, which is a cylindrical structure having two oppositely arranged grooves, and the cross-section of the setting grooves is fan-shaped; and a plurality of conductors, which are structures with a fan-shaped cross-section corresponding to the shape of the setting grooves and are arranged in the setting grooves.

[0021] Furthermore, the conductor includes: a plurality of conductive bodies, which are electrically connected to the signal generating part, arranged inside the through hole, and contact the microneedles to achieve electrical connection; and a second gasket, which is arranged between two adjacent conductive bodies.

[0022] Furthermore, the second gasket is made of insulating material.

[0023] Furthermore, the conductive body and the second gasket of the conductor on one side correspond to the second gasket and the conductive body of the conductor facing each other.

[0024] Furthermore, the rotating shaft portion is formed with a plurality of setting grooves, the setting grooves are cylindrical structures, parallel to the central axis from one end to the other end, and the rotating shaft portion includes a plurality of conductors, the plurality of conductors are rod-shaped structures corresponding to the shape of the setting grooves, and are arranged in the setting grooves.

[0025] Furthermore, the conductor is in the form of a round rod with isolation grooves formed at predetermined intervals on one side surface.

[0026] Furthermore, the conductor includes: a plurality of conductive bodies, which are electrically connected to the signal generating part, arranged inside the through hole, and in contact with the microneedle to achieve electrical connection; and a third gasket, which is arranged between two adjacent conductive bodies and is made of insulating material.

[0027] Furthermore, the rotating shaft portion includes: a first flange and a second flange, which are respectively arranged at both ends of the roller; a first connecting rod, which protrudes from one side of the first flange toward the second flange; a second connecting rod, which protrudes from one side of the second flange toward the first flange and is connected to the first connecting rod; and a first conductor and a second conductor, which are respectively arranged on the outer periphery of the first connecting rod and the second connecting rod.

[0028] Furthermore, the second combining rod is a hollow rod-shaped structure, and the first combining rod is inserted into the interior of the second combining rod to be connected to the second combining rod.

[0029] Furthermore, the first combining rod is a hollow rod-shaped structure, and the first combining rod further comprises: an insertion rod, which is arranged on the central axis of the first combining rod and is inserted into the inner side of the second combining rod when connected to the second combining rod.

[0030] Furthermore, a first slot and a second slot are formed on the outer circumference of the first combining rod along the length direction, and the first conductor is embedded in the first slot.

[0031] Furthermore, a third slot is formed on the outer circumference of the second combining rod along the length direction, and the second conductor is embedded in the third slot.

[0032] Furthermore, it also includes: connecting protrusions, which are respectively arranged on the other side surfaces of the first flange and the second flange.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention as described above can promote the formation of microchannels on the user's skin and promote skin blood circulation by applying electrical signals to the microneedles through the rotating shaft portion provided on the central axis of the roller, thereby increasing collagen formation in the dermis.

[0035] In addition, the present invention is configured to apply electrical signals only through microneedles provided in a partial area of the rotating shaft provided on the central axis of the roller, thereby applying electrical signals only to the area required by the user.

[0036] In addition, the present invention can generate a plurality of different signals and apply them to the user through microneedles arranged at different positions on the roller, so as to provide different electrical stimulation effects according to the electrical stimulation sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 FIG. 1 is a perspective view showing an example of a conventional microneedle roller.

[0038] Figure 2 for Figure 1 An exploded perspective view of the roller is shown.

[0039] Figure 3 This is a perspective view showing an example of a microneedle roller according to the first embodiment of the present invention.

[0040] Figure 4 To show Figure 3 FIG. 1 is an exploded perspective view showing the connection between the roller and the rotating shaft used in the microneedle roller according to the first embodiment of the present invention.

[0041] Figure 5 This is an exploded perspective view showing the structure of the rotating shaft portion used in the microneedle roller according to the second embodiment of the present invention.

[0042] Figure 6 To show Figure 5 A cross-sectional view showing the structure of the rotating shaft portion.

[0043] Figure 7 This is a perspective view showing the structure of a rotating shaft portion used in a microneedle roller according to a third embodiment of the present invention.

[0044] Figure 8 This is a perspective view showing the structure of a rotating shaft portion used in a microneedle roller according to a fourth embodiment of the present invention.

[0045] Figure 9 This is a perspective view showing the structure of a rotating shaft portion used in a microneedle roller according to a fifth embodiment of the present invention.

[0046] Figure 10 This is a perspective view showing the structure of a conductor provided on the rotating shaft portion used in a microneedle roller according to a sixth embodiment of the present invention.

[0047] Figure 11 This is a perspective view showing the structure of a conductor provided on the rotating shaft portion used in a microneedle roller according to a seventh embodiment of the present invention.

[0048] Figure 12 This is a perspective view showing the structure of the rotating shaft portion used in the microneedle roller according to the eighth embodiment of the present invention.

[0049] Figure 13 To show Figure 12 An exploded perspective view showing the structure of the rotating shaft portion.

[0050] exist Figure 3-13 middle:

[0051] 100 - microneedle roller, 110 - roller, 112 - disc, 114 - microneedle, 116 - through hole, 120A - rotating shaft part 1, 120B - rotating shaft part 2, 120C - rotating shaft part 3, 120D - rotating shaft part 4, 120E - rotating shaft part 5, 122A - insulator 1, 122B - insulator 2, 122C - insulator 3, 124A - conductor 1, 124C - conductor 3, 124D—conductor 4, 125D—conductor 5, 126D—conductor 6, 123C—setting slot 1, 122D—setting slot 2, 1226E—support rod, 1224E—first narrow slot, 1225E—second narrow slot, 1244E—third narrow slot, 1220E—first flange, 1240E—second flange, 1222E—first connecting rod, 1242E—second connecting rod, 1 228E—first conductor, 1248E—second conductor, 1223E—first connecting protrusion, 1243E—second connecting protrusion, 1242—first unit conductor one, 1242B—first unit conductor two, 1262D—first unit conductor three, 1244—second unit conductor one, 1244B—second unit conductor two, 1242BA—conductive body one, 1244BA—conductive body two, 1252CA—conductive body three, 1262DA—conductive body four, 1264DA—conductive body five, 118—first gasket, 1242BB—second gasket one, 1244BB—second gasket two, 1252CB—second gasket three, 1262DB—third gasket one, 1264DB—third gasket two, 140—handle, 142—handle body, 144—connecting arm. DETAILED DESCRIPTION

[0052] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0053] First embodiment

[0054] Reference Figure 3 and Figure 4 The microneedle roller 100 of the first embodiment of the present invention may include a roller 110 , a signal generating unit, a rotating shaft unit, and a handle 140 .

[0055] The roller 110 can perform a rolling motion along the user's skin.

[0056] The roller 110 is a cylindrical structure with a predetermined length and diameter.

[0057] The roller 110 has a through hole 116 with a predetermined diameter formed on its central axis for connection with a handle 140 to be described later.

[0058] The roller 110 includes a circular plate 112 having a predetermined thickness and a through hole 116 formed on the central axis thereof. A plurality of circular plates 112 are stacked in the axial direction.

[0059] On one side of the circular plate 112 , a plurality of microneedles 114 are radially arranged from the center of the circular plate 112 toward the outside.

[0060] One end of the microneedle 114 protrudes from the outer circumference of the circular plate 112 by a predetermined height, and the other end protrudes to the inner circumference of the through hole 116 , so that a signal can be transmitted from the conductor to the microneedle 114 .

[0061] The roller 110 includes a circular plate 112 on which a plurality of microneedles 114 are provided on its outer peripheral surface. The plurality of microneedles 114 form a predetermined matrix.

[0062] A first spacer 118 is provided between the circular plates 112 to maintain the intervals between the microneedles 114 provided on the circular plates 112 .

[0063] The first gasket 118 is a ring-shaped structure with a predetermined diameter.

[0064] The rotating shaft is disposed in a through hole 116 formed on the central axis of the roller 110 . The rotating shaft is rotatably connected to one end of the handle 140 .

[0065] The rotating shaft is disposed in the through hole 116 and transmits a signal generated by a signal generating unit to be described later to the microneedle 114 .

[0066] The detailed structure of the rotating shaft portion will be described later.

[0067] The handle 140 can be operated by a user to cause the roller 110 to roll along the user's skin.

[0068] The handle 140 includes a handle body 142 and a connecting arm 144 .

[0069] The handle body 142 can be grasped by a user.

[0070] In addition, a signal generating unit is provided inside the handle body 142. In addition, a liquid medicine storage unit is provided inside the handle 140, and the liquid medicine storage unit is used to store liquid medicine supplied by the microchannel formed by the microneedles 114.

[0071] The connecting arm 144 is a rod-shaped structure with a predetermined length. A pair of connecting arms 144 are provided at one end of the handle body 142 .

[0072] A rotating shaft portion is rotatably connected to an end portion of the connecting arm 144 .

[0073] The signal generating unit can generate an electrical signal with a predetermined frequency, and the generated signal can be transmitted to the user through the microneedles 114 .

[0074] The signal generating unit can generate multiple different signals simultaneously.

[0075] The signal generating unit includes a battery, an oscillation unit and a control unit.

[0076] The battery can supply the power required for the signal generating unit to operate.

[0077] The oscillation units can generate different signals simultaneously.

[0078] The control unit can control the oscillation unit to control the frequency, signal generation interval, and signal strength of the generated electrical signal. The control unit can control the generation of multiple signals with different frequencies.

[0079] For example, the control unit may enable the oscillation unit to simultaneously generate a low-frequency signal of 50-60 Hz and a high-frequency signal with a higher frequency.

[0080] In addition, the control unit can control the positive voltage and negative voltage with a predetermined frequency to be supplied to the microneedles respectively.

[0081] The different signals generated by the signal generator can be transmitted to the plurality of conductors provided on the rotating shaft, and then applied to the microneedles 114 provided at different positions on the roller 110, and finally transmitted to the user.

[0082] Each of the plurality of conductors is configured to transmit a signal to the signal generating unit.

[0083] The control unit includes an operation switch operated by a user.

[0084] The structure of the rotating shaft is now described:

[0085] In this embodiment, the rotating shaft portion is a rotating shaft portion 120A. The rotating shaft portion 120A is a cylindrical structure having a size and shape corresponding to the through hole 116 so as to be disposed in the through hole 116 .

[0086] The rotating shaft portion 120A includes an insulator 122A and a conductor 124A.

[0087] Insulator 122A is a rectangular plate with a predetermined size and thickness. Insulator 122A can provide insulation so that the signal from the signal generator is not applied to microneedles 114 other than the microneedles 114 that are conductively connected to conductor 124A.

[0088] The length and width of the insulator 122A correspond to the length and diameter of the through hole 116. In addition, the thickness of the insulator 122A can be variously set according to user needs.

[0089] The conductor 124A is electrically connected to a portion of the microneedles 114 disposed on the outer peripheral surface of the roller 110 , and transmits the electrical signal generated by the signal generating unit to the electrically connected microneedles 114 .

[0090] The first conductor 124A includes a first unit conductor 1242 and a second unit conductor 1244 respectively disposed on two side surfaces of the first insulator 122A.

[0091] The first unit conductor 1242 and the second unit conductor 1244 are semi-cylindrical in shape with a curvature corresponding to the inner circumference curvature of the through hole 116. The first unit conductor 1242 and the second unit conductor 1244 are identical in size and shape.

[0092] Different signals may be applied to the first unit conductor 1242 and the second unit conductor 1244. For example, a low-frequency signal may be applied to the first unit conductor 1242, and a high-frequency signal may be applied to the second unit conductor 1244.

[0093] In addition, a positive voltage may be applied to the first unit conductor 1242 , and a negative voltage may be applied to the second unit conductor 1244 .

[0094] Second embodiment

[0095] Reference Figure 5 The rotating shaft portion adopts a second rotating shaft portion 120B, and the second rotating shaft portion 120B may include a second insulator 122B and a second conductor.

[0096] The same structures as the previous embodiments will not be described again.

[0097] The second conductor includes a first unit conductor 1242B and a second unit conductor 1244B respectively disposed on both sides of the second insulator 122B.

[0098] The first unit conductor 2 1242B includes a conductive body 1242BA and a second gasket 1242BB.

[0099] Conductive body 1242BA is electrically connected to the signal generator. Multiple conductive bodies 1242BA are arranged at predetermined intervals within through-hole 116. Conductive body 1242BA is a semi-cylindrical structure with a predetermined thickness and a curvature corresponding to the inner circumference of through-hole 116. It is located on one side of insulator 2 122B.

[0100] The second gasket 1242BB is disposed between two adjacent conductive bodies 1242BA to maintain the interval between the conductive bodies 1242BA.

[0101] The size of the second gasket 1242BB is smaller than that of the conductive body 1242BA.

[0102] The second gasket 1242BB is made of insulating material.

[0103] Therefore, different signals can be transmitted through the plurality of conductive bodies 1242BA included in the first unit conductor 1242B.

[0104] For example, a low-frequency signal of 50 to 60 Hz can be transmitted through the first unit conductor 1242B. If the first unit conductor 1242B includes six second conductive bodies 1244BA, the low-frequency signals transmitted through each of the second conductive bodies 1244BA can be 51 Hz, 52.5 Hz, 54 Hz, 55.5 Hz, 57 Hz, and 57.5 Hz.

[0105] The second unit conductor 1244B has the same structure as the first unit conductor 1242B, and thus will not be described in detail.

[0106] A signal different from that of the first unit conductor 1242B may be transmitted to the second unit conductor 1244B.

[0107] Reference Figure 6 It can be seen that the first second unit conductor 1242B and the second second unit conductor 1244B are provided on both sides of the second rotating shaft portion 120B.

[0108] Among them, when the rotating shaft part 120B is used as a reference, the second gasket 1244BB of the second unit conductor 1244B can be set at a corresponding position with the conductive body 1242BA on the first unit conductor 1242B, and the conductive body 1244BA of the second unit conductor 1244B and the second gasket 1242BB on the first unit conductor 1242B are set at corresponding positions.

[0109] according to Figure 6 As can be seen from the structure of the rotating shaft portion 120B shown, the microneedles 114 that receive signals through the first unit conductor 1242B and the microneedles 114 that receive signals through the second unit conductor 1244B are arranged in different rows and columns on the outer surface of the roller 110, so the parts where the signals are received are different.

[0110] Third embodiment

[0111] Reference Figure 7 The rotating shaft portion adopts a rotating shaft portion 3 120C, and the rotating shaft portion 3 120C includes an insulator 3 122C and a conductor 3 124C.

[0112] The third insulator 122C is a cylindrical structure having a first arrangement groove 123C with a fan-shaped cross-section formed on both sides of the outer periphery.

[0113] The conductor three 124C is respectively disposed in the arrangement groove one 123C on both sides of the insulator three 122C to transmit the signal generated by the signal generating unit to the microneedle 114.

[0114] The conductor three 124C has a fan-shaped cross-section corresponding to the shape of the slot one 123C.

[0115] The outer periphery of the conductor three 124C is a predetermined curved surface.

[0116] Different signals may be transmitted to the conductor 3 124C on both sides of the insulator 3 122C.

[0117] Fourth embodiment

[0118] Reference Figure 8 The rotating shaft adopts a rotating shaft three 120C, and the rotating shaft part three 120C includes an insulator three 122C and a conductor 125C.

[0119] The conductors 125C are respectively disposed in the arrangement groove 123C on both sides of the insulator 3 122C to transmit the signal generated by the signal generating unit to the microneedle 114.

[0120] The conductor 125C has a fan-shaped cross section corresponding to the shape of the slot 123C.

[0121] The conductor 125C includes a third conductive body 1252CA and a third second gasket 1252CB.

[0122] The third conductive body 1252CA is electrically connected to the signal generator. The third conductive body 1252CA is a fan-shaped structure with a predetermined thickness and a curvature corresponding to the inner curvature of the through hole 116. A plurality of the third conductive bodies 1252CA are provided at predetermined intervals within the first arrangement slot 123C.

[0123] The second third gasket 1252CB is disposed between two adjacent third conductive bodies 1252CA to maintain a gap between the third conductive bodies 1252CA.

[0124] Fifth embodiment

[0125] Reference Figure 9 The rotating shaft portion adopts the rotating shaft portion 120D, and the rotating shaft portion 120D is a cylindrical structure corresponding to the inner circumferential shape of the through hole 116.

[0126] A plurality of second slots 122D are formed on both sides of the outer periphery of the fourth rotating shaft portion 120D, extending from one end to the other end of the fourth rotating shaft portion 120D and parallel to the central axis. The fourth rotating shaft portion 120D is made of an insulating material.

[0127] The second groove 122D can be formed in a circular shape. In addition, the second groove 122D can be formed in other shapes such as a square cross-section shape according to user needs.

[0128] A fourth conductor 124D is provided in the second slot 122D.

[0129] After the fourth conductor 124D is disposed in the second disposition groove 122D, it can transmit different signals generated by the signal generating portion to the microneedle 114 .

[0130] The fourth conductor 124D is a round rod-shaped structure corresponding to the shape of the second slot 122D.

[0131] Sixth embodiment

[0132] Reference Figure 10 The conductor used is conductor five 125D, and the conductor five 125D is a round rod-shaped structure corresponding to the shape of the second slot 122D.

[0133] The surface of the fifth conductor 125D is formed with predetermined isolation grooves 1252D at predetermined intervals. The space between the isolation grooves 1252D serves as a contact surface with the other end of the microneedle 114. When the fifth conductor 125D is provided, the isolation grooves 1252D can be positioned toward the outside of the rotating shaft portion 120D.

[0134] The isolation groove on the conductor 5 125D provided in the second arrangement groove 122D on one side of the rotating shaft portion 20D corresponds to the contact surface of the conductor 5 125D provided in the opposing second arrangement groove 122D.

[0135] Seventh embodiment

[0136] Reference Figure 11 The conductor is a sixth conductor 126D, and the sixth conductor 126D includes a first unit conductor 3 1262D and a second unit conductor 3 respectively disposed in the second arrangement slot 122D formed on both sides of the fourth shaft portion 120D.

[0137] The first unit conductor 1262D includes a fourth conductive body 1262DA and a third gasket 1262DB.

[0138] The conductive body 24 1262DA is electrically connected to the signal generating unit and has a disk shape corresponding to the internal shape of the through hole 116.

[0139] A plurality of the fourth conductive bodies 1262DA are arranged inside the second setting groove 122D at predetermined intervals.

[0140] The third gasket 1262DB is disposed between two adjacent conductive bodies 1262DA to maintain the interval between the conductive bodies 1262DA.

[0141] The third gasket 1262DB is made of insulating material.

[0142] The second unit conductor 3 includes a fifth conductive body 1264DA and a second third gasket 1264DB. The second unit conductor 3 has the same structure as the first unit conductor 3 1262D, and thus will not be described in detail.

[0143] Among them, when the rotating shaft part four 120D is used as a reference, the third gasket two 1264DB of the second unit conductor three and the conductive body four 1262DA on the first unit conductor three 1262D are set at corresponding positions, and the conductive body five 1264DA of the second unit conductor three and the third gasket one 1262DB on the first unit conductor three 1262D are set at corresponding positions.

[0144] Eighth embodiment

[0145] Reference Figure 12 and Figure 13 The rotating shaft portion adopts the rotating shaft portion 5 120E, and the rotating shaft portion 5 120E includes a first flange 1220E, a second flange 1240E, a first connecting rod 1222E, a second connecting rod 1242E, a first conductor 1228E and a second conductor 1248E, a first connecting protrusion 1223E and a second connecting protrusion 1243E.

[0146] The first flange 1220E and the second flange 1240E are respectively provided at both ends of the through hole 116 of the roller 110, constituting the two end portions of the rotating shaft portion 5 120E.

[0147] The first flange 1220E and the second flange 1240E are each in the form of a circular plate with a predetermined diameter.

[0148] The first connecting rod 1222E protrudes from one side surface of the first flange 1220E toward the second flange 1240E. The first connecting rod 1222E is a hollow rod with a predetermined length and diameter.

[0149] A support rod 1226E is provided on the inner central axis of the first coupling rod 1222E.

[0150] The second connecting rod 1242E protrudes from one side surface of the second flange 1240E toward the first flange 1220E. The second connecting rod 1242E is a hollow rod with a predetermined length and diameter.

[0151] The second connecting rod 1242E is inserted into the inner side of the first connecting rod 1222E.

[0152] On one hand, a first connecting protrusion 1223E and a second connecting protrusion 1243E are provided at the center of the other side of each of the first flange 1220E and the second flange 1240E. The first connecting protrusion 1223E and the second connecting protrusion 1243E are electrically connected to the first conductor 1228E and the second conductor 1248E.

[0153] Therefore, the first connecting protrusion 1223E and the second connecting protrusion 1243E can transmit the signal generated by the signal generating unit to the first conductor 1228E and the second conductor 1248E. In addition, the first connecting protrusion 1223E and the second connecting protrusion 1243E can be connected to the end of the connecting arm 144 and play the role of the rotation center axis of the roller 110.

[0154] A support rod 1226E is provided on the inner central axis of the first coupling rod 1222E.

[0155] The support rod 1226E may be inserted into the inner side of the second connecting rod 1242E when the second connecting rod 1242E is inserted into the inner side of the first connecting rod 1222E.

[0156] The support rod 1226E can provide support so that the second conductor 1248E disposed in the third slot 1244E will not be separated from the inner side of the second coupling bar 1242E.

[0157] The first conductor 1228E and the second conductor 1248E can transmit the received signal from the signal generating unit to the microneedle 114 .

[0158] To accommodate first conductor 1228E and second conductor 1248E, a first slot 1224E and a second slot 1225E are formed along the length of the outer circumference of first connecting rod 1222E. Second slot 1225E is open toward the end of first connecting rod 1222E. Furthermore, a third slot 1244E is formed along the length of the outer circumference of second connecting rod 1242E.

[0159] When the first combining rod 1222E and the second combining rod 1242E are combined with each other, the third narrow groove 1244E may be communicated with the second narrow groove 1225E.

[0160] Furthermore, the first slot 1224E, the second slot 1225E, and the third slot 1244E are formed on both sides of the outer periphery of the first connecting rod 1222E and the second connecting rod 1242E, respectively. Furthermore, the first slot 1224E, the second slot 1225E, and the third slot 1244E may be formed only on one side of the outer periphery of the first connecting rod 1222E and the second connecting rod 1242E, depending on user needs.

[0161] The first conductor 1228E and the second conductor 1248E are respectively embedded in the first slot 1224E and the third slot 1244E, wherein the surfaces of the first conductor 1228E and the second conductor 1248E are in conductive contact with the other end of the microneedle 114 .

[0162] The first conductor 1228E and the second conductor 1248E can transmit different signals generated by the signal generator to the microneedle 114. For example, the first conductor 1228E can transmit a low-frequency signal to the microneedle 114, and the second conductor 1248E can transmit a high-frequency signal to the microneedle 114.

[0163] The present invention, constructed as described above, can apply electrical signals to the microneedles via the rotating shaft portion disposed on the central axis of the roller, thereby forming microchannels in the user's skin and promoting skin blood circulation, thereby increasing collagen formation in the dermis. Furthermore, the present invention can be configured to apply electrical signals only via the microneedles disposed in a portion of the rotating shaft portion disposed on the central axis of the roller, thereby applying electrical signals only to the desired areas of the user. Furthermore, the present invention can generate multiple, mutually different signals and apply them to the user via microneedles disposed at different locations on the roller, thereby providing different electrical stimulation effects depending on the area of electrical stimulation.

[0164] The present invention is described with reference to the embodiments shown in the accompanying drawings. However, this is for illustrative purposes only. Those skilled in the art will appreciate that various modifications and equivalent embodiments may be derived therefrom. Therefore, the true scope of protection of the present invention should be determined by the technical principles of the appended claims.

Claims

1. A microneedle roller, characterized in that: include: A roller having a plurality of microneedles arranged along its periphery and a through hole formed on its central axis; a signal generating unit that generates a plurality of signals and supplies the signals to the microneedles; a rotating shaft portion disposed in the through hole and comprising a conductor for transmitting a plurality of signals generated by the signal generating portion to the microneedle; and A handle, one end of which is rotatably connected to the rotating shaft.

2. The microneedle roller according to claim 1, characterized in that The roller includes: a plurality of circular plates, on which a plurality of microneedles are radially arranged from the center toward the outside, each circular plate is formed with a through hole on the central axis, and the plurality of circular plates are stacked along the axial direction.

3. The microneedle roller according to claim 2, characterized in that: Also included is a first gasket disposed between the circular plates.

4. The microneedle roller according to claim 1 or 2, characterized in that: One end of the microneedle protrudes from the outer circumferential surface of the roller, and the other end is arranged on the inner circumferential surface of the through hole.

5. The microneedle roller according to claim 1, characterized in that: The rotating shaft portion includes: Plate-shaped insulators; and The conductor is composed of a semi-cylindrical structure corresponding to the inner peripheral shape of the through hole and is provided on both sides of the insulator.

6. The microneedle roller according to claim 1, characterized in that The rotating shaft portion includes: an insulator, wherein the insulator is a cylindrical structure having two grooves arranged opposite to each other, and the cross section of the grooves is fan-shaped; and A plurality of conductors are provided in the arrangement groove, wherein the conductors have a sector-shaped cross section corresponding to the shape of the arrangement groove.

7. The microneedle roller according to claim 5 or 6, characterized in that: The conductor comprises: a plurality of conductive bodies, which are electrically connected to the signal generating portion, are disposed inside the through-holes, and are in contact with the microneedles to achieve electrical connection; and The second gasket is arranged between two adjacent conductive bodies.

8. The microneedle roller according to claim 7, characterized in that: The second gasket is made of insulating material.

9. The microneedle roller according to claim 8, characterized in that The conductive body and the second gasket of the conductor on one side correspond to the second gasket and the conductive body of the conductor facing each other.

10. The microneedle roller according to claim 1, characterized in that The rotating shaft portion is formed with a plurality of setting grooves, which are cylindrical structures and are parallel to the central axis from one end to the other end. The rotating shaft portion includes a plurality of conductors, which are rod-shaped structures corresponding to the shape of the setting grooves and are arranged in the setting grooves.

11. The microneedle roller according to claim 10, characterized in that: The conductor is in the form of a round rod with isolation grooves formed at predetermined intervals on one side surface.

12. The microneedle roller according to claim 10, characterized in that The conductor comprises: a plurality of conductive bodies, which are electrically connected to the signal generating portion, are disposed inside the through-holes, and are in contact with the microneedles to achieve electrical connection; and The third gasket is arranged between two adjacent conductive bodies and is made of insulating material.

13. The microneedle roller according to claim 1, characterized in that The rotating shaft portion includes: a first flange and a second flange, which are respectively provided at two ends of the roller; a first connecting rod protruding from one side of the first flange toward the second flange; a second connecting rod protruding from one side of the second flange toward the first flange and connected to the first connecting rod; and The first conductor and the second conductor are respectively disposed on the outer periphery of the first connecting rod and the second connecting rod.

14. The microneedle roller according to claim 13, characterized in that The second connecting rod is a hollow rod-shaped structure, and the first connecting rod is inserted into the interior of the second connecting rod to be connected with the second connecting rod.

15. The microneedle roller according to claim 14, characterized in that: The first combining rod is a hollow rod-shaped structure, and the first combining rod further comprises: The insertion rod is arranged on the central axis of the first connecting rod and is inserted into the inner side of the second connecting rod when connected with the second connecting rod.

16. The microneedle roller according to claim 14, characterized in that A first slot and a second slot are formed on the outer circumference of the first connecting rod along the length direction, and the first conductor is embedded in the first slot.

17. The microneedle roller according to claim 16, characterized in that A third slot is formed on the outer circumference of the second connecting rod along the length direction, and the second conductor is embedded in the third slot.

18. The microneedle roller according to claim 13, wherein: Also includes: The connecting protrusions are respectively arranged on the other side surfaces of the first flange and the second flange.

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