CN220898760U - Needle channel with rotor guide and multi-channel hair planter comprising same - Google Patents

Abstract

The utility model relates to a needle channel with a rotor guider and a multi-channel hair implanter comprising the same, in one embodiment, a needle channel is disclosed, comprising: a main body part having an inner space in the up-down direction; a needle coupled to a lower end portion of the main body and having a through hole communicating with an inner space of the main body; and a needle shaft provided slidably in the vertical direction in the interior space of the main body and the through-hole of the needle, wherein the main body has a rotor guide extending downward from a lower end of the main body so as to surround at least a part of the outer peripheral surface of the needle.

Description

Needle channel with rotor guide and multi-channel hair planter comprising same

Technical Field

The present utility model relates to a hair planter (hair transplanting device), and more particularly, to a multichannel (multichannel) hair transplanting device in which a plurality of hair transplanting needles (transplanting needles) are mounted in a bundle.

Background

Hair transplants (hair grafts) are medical devices for hair surgery, in which hair is removed from a hair area of the scalp and planted in the scalp of other bald areas of hair loss (bald patient) for transplantation (transplant).

As a conventional hair transplanter, for example, a bundle-shaped hair transplanter disclosed in korean laid-open patent No. 2019-0109321 is disclosed in a "multichannel hair transplanter" in which a plurality of needle passages each consisting of a needle head (transplanting needle) and a needle shaft slidably inserted inside the needle head are installed.

The hair-planting (hair transplantation) action according to the prior art multi-channel hair-planting device is schematically shown in fig. 1. First, as shown in fig. 1 (a), hair follicles to be planted are inserted into the inner space of the lower end portion of the needle 1, and then, as shown in fig. 1 (b), the hair planter is lowered and the front end portion of the needle 1 is inserted into the scalp. At this time, the needle 1 is inserted into the scalp until the lower end of the nozzle 5 of the hair planter contacts the scalp. Thereafter, the needle 1 is moved upward with respect to the nozzle 5 and the needle shaft 3 to leave hair follicles in the scalp (fig. 1 (c)), and then the entire hair implanter is lifted up to complete the hair implantation operation (fig. 1 (d)).

However, according to such a conventional hair-planting operation, the needle needs to be inserted into the scalp to a depth of about 7.5mm to 8.5mm, and the deeper the insertion depth is, the more the patient may be, such as scalp damage and bleeding of the patient. In order to prevent this, if the operator inserts the needle to a shallow depth (i.e., a depth to the extent that the lower end of the nozzle 5 does not contact the scalp), the hair implanter cannot be supported on the scalp, and the implant Mao Qizuo swings right, so that there is a problem that it is difficult to prevent damage to the scalp even in this case.

Prior art literature

Patent literature

Patent document 1: korean laid-open patent No. 10-2019-0109321 (2019, 09, 25 days)

Disclosure of utility model

Problems to be solved by the utility model

The present utility model has been made to solve the above-described problems of the prior art, and an object of the present utility model is to provide a hair implanter capable of transplanting hair follicles to an appropriate depth in the scalp while reducing the depth of insertion of a needle into the scalp as compared with the conventional hair implanter.

Solution for solving the problem

According to an embodiment of the present utility model, there is disclosed a needle channel as a needle channel usable for a hair transplanter, comprising: a main body part having an inner space in the up-down direction; a needle coupled to a lower end portion of the main body and having a through hole communicating with an inner space of the main body; and a needle shaft provided slidably in the vertical direction in the interior space of the main body and the through-hole of the needle, wherein the main body has a rotor guide extending downward from a lower end of the main body so as to surround at least a part of the outer peripheral surface of the needle.

According to an embodiment of the present utility model, there is disclosed a hair planter as a hair planter having the needle passage, comprising: a nozzle part fastened to the lower part of the hair planting device body and having a nozzle penetrating the needle of one needle passage, wherein the through hole of the nozzle is composed of a small diameter region having a first radius from the center of the through hole and a large diameter region having a second radius larger than the first radius from the center.

According to an embodiment of the present utility model, there is disclosed a hair transplantation method as a hair transplantation method using a hair planter having a plurality of the above-described needle passages, comprising: a step of lowering the hair planter toward the scalp and inserting the needle into the scalp until the lower end of the rotor guide contacts the scalp; a step of lowering the needle shaft inside the body of the hair planting device and the needle head by means of a relative lowering movement of the body of the hair planting device with respect to the needle head; and a step of transplanting hair follicles located in the distal end portion of the needle into the scalp by lowering the needle shaft.

Effects of the utility model

According to an embodiment of the present utility model, hair follicles can be placed in the scalp while the depth of insertion of the needle into the scalp is reduced as compared with the past, and therefore, damage or bleeding to the scalp of a patient can be reduced, and the patient or operator's resistance to hair transplantation operation can be reduced.

Further, according to an embodiment of the present utility model, there is provided a rotor guide at least partially surrounding the periphery of the needle protruding downward of the needle passage, and the through-hole of the nozzle of the hair planting device through which the needle and the rotor guide are inserted is formed in the same cross-section shape as the cross-section shape of the coupling structure of the needle and the rotor guide, so that the needle can be prevented from rocking left and right when the needle and the rotor guide are slid through the through-hole, thereby having an advantage that a stable hair planting operation can be realized.

Drawings

Fig. 1 is a diagram for explaining the advancing and retreating actions of a needle channel according to the prior art.

Fig. 2 is a perspective view of a hair transplanter according to an embodiment of the present utility model.

Fig. 3 is a cross-sectional view of a hair transplanter according to an embodiment.

Fig. 4 is an exploded perspective view of a hair transplanter according to an embodiment.

Fig. 5 is a view showing a lower region of the hair transplanter in a state where the lower cover is removed.

Fig. 6 is a diagram for explaining a needle passage bundle according to an embodiment.

Fig. 7 is a perspective view and a cross-sectional view of a needle channel according to an embodiment.

Fig. 8 is an exploded perspective view of a needle channel according to an embodiment.

Fig. 9 is a view for explaining a lower structure of a needle and a needle shaft according to an embodiment.

Fig. 10 is a diagram for explaining a nozzle portion structure according to an embodiment.

Fig. 11 is a view for explaining a needle shaft engaging portion according to an embodiment.

Fig. 12 is a diagram for explaining the engagement and disengagement operation of the needle shaft according to an embodiment.

Fig. 13 is a diagram for explaining the advancing and retreating actions of the needle channel according to an embodiment.

Description of the reference numerals

10: A housing; 20: a nozzle portion; 21: a nozzle section frame;

22: a center support portion; 25: a nozzle; 30: an upper cover;

40: a needle length adjustment ring; 50: a lower cover; 60: a protective cover;

1100: a bundle body portion; 1110: a channel junction;

1115: a slide rail; 1120: a head; 1200: a needle channel;

1210: a main body portion; 1211: a clamping protruding part;

1212: ratchet teeth; 1213: a side protruding portion;

1215: a slot; 1217: a protruding portion; 1219: a clamping groove;

1220: a needle; 1221: a slot hole; 1230: a needle shaft;

1231: a rod; 1241: a spring; 1250: an upper cover;

1253: an inclination angle; 1270: a rotor guide;

1300: a ratchet wheel supporting part; 1310: a support upper surface;

1350: a lifting guide; 1400: a lifting gear supporting part;

1410: wedge-shaped protruding parts; 1420. 1430: a connection tab;

1520. 1540: a spring; 1530: a push rod; 1550: a central shaft;

1700: a needle shaft clamping part; 1710: a fastener; 1720: a fastener housing part;

1730: an elastic member; 1711: a rod contact surface;

1713: a protrusion contact surface; 1900: a needle channel clamping part;

1910: a fastener; 1920: a fastener housing part;

1930: an elastic member; 1800: a manual operation handle;

1810: a handle groove; 1820: a spring housing part;

1830: a spring; 1840: and a spring lower coupling member.

Detailed Description

The above objects, other objects, features and advantages of the present utility model will become more apparent from the accompanying drawings and the following related preferred embodiments. However, the present utility model is not limited to the embodiments described herein, but may be embodied in other forms. The embodiments described below are exemplary embodiments provided to fully convey the concept of the utility model to those skilled in the art.

In the present specification, reference to one component being "on the upper side" (or "lower side", "right side", or "left side") of another component means that it may be directly on the upper side (or lower side, right side, or left side) of the other component, or a third component may be sandwiched therebetween. In addition, the length and thickness of the constituent elements in the drawings are exaggerated for the purpose of effectively explaining the technical contents.

In the present specification, expressions such as "upper", "lower", "left", "right", "front face", "rear face", etc. used for describing the positional relationship between the constituent elements are not meant to be directions or positions as absolute references, but relative expressions used for referring to the drawings for convenience of description when describing the present utility model with reference to the drawings.

In the present specification, the "forward" of the structural element such as the needle passage, the needle head, the needle shaft, etc. means that the structural element moves toward the scalp, and the above-mentioned structural element "backward" or "backward" may mean that the structural element moves in a direction away from the scalp.

When first, second, etc. terms are used in the present specification to describe structural elements, these structural elements cannot be defined by these terms. These terms are only used to distinguish one element from another. The embodiments described and illustrated herein also include their complementary embodiments.

In this specification, the singular forms include the plural unless the context clearly dictates otherwise. The use of "comprising" and/or "including" in the specification does not preclude the presence or addition of one or more other structural elements than those mentioned.

The present utility model will be described in detail below with reference to the drawings. In describing the following specific embodiments, various details are set forth in order to more particularly explain the present utility model and to facilitate the understanding of the present utility model. However, it will be appreciated by those skilled in the art that the utility model may be practiced without these specific details. It is noted that in some cases, in order to avoid confusion in describing the present utility model, parts that are well known in the art and have not much relevance to the present utility model are not described.

Fig. 2 is a perspective view of a hair transplanter (hair planter) according to an embodiment, fig. 3 is a sectional view of the hair transplanter, and fig. 4 is an exploded perspective view.

Referring to the drawings, the hair transplanter of an embodiment is composed of a housing 10, and a nozzle part 20 and an upper cover 30 coupled to the lower and upper parts of the housing 10, respectively. The nozzle portion 20 is located inside the lower cover 50 which is fastened in a detachable manner.

The housing 10 is a cylindrical member with open upper and lower ends. The inside of the housing 10 is rotatably provided with a needle passage bundle B on which a plurality of needle passages 1200 are combined in a bundle shape. The needle channel bundle B may be constituted by a plurality of needle channels 1200 arranged radially and equally on the bundle body 1100 and the outer peripheral surface thereof as a multi-channel unit constituted by a plurality of needle channels.

A passage rotating unit for rotating the needle passage bundle by a prescribed angle of one passage is provided around the outside of the needle passage bundle B. In the embodiment shown in the drawings, the channel rotation unit may include: a cylindrical lifting gear supporting part 1400 surrounding the outer circumferential surface of the needle passage bundle; and a ratchet (ratchet) supporting part 1300 protruding from an inner side surface of the housing 10 and provided on an outer circumferential surface of the lifting gear supporting part 1400.

The ratchet support 1300 is formed to protrude inward on the inner surface of the housing 10. The lifting gear supporting portion 1400 may slide in the up-down direction. In one embodiment, the needle passage bundle may be rotated by a predetermined angle each time the elevating gear support 1400 performs an elevating and lowering operation. For example, the needle passage bundle B can be rotated by one needle passage interval by one ascending/descending operation of the elevating gear support 1400. The specific structure and operation of the passage rotation unit realized by the ratchet supporting portion 1300 and the lifting gear supporting portion 1400 are disclosed in korean laid-open patent No. 2019-0109321, for example, and thus detailed description thereof is omitted.

The side surface of the housing 10 is provided with a needle shaft engaging portion 1700. The needle shaft engaging portion 1700 functions to temporarily stop the movement of the needle shaft by engaging the needle shaft (1230 in fig. 7) slidably disposed inside the needle channel 1200.

The nozzle portion 20 is fastened to the lower end portion of the housing 10. In one embodiment shown in the drawings, the nozzle unit 20 may be composed of an annular nozzle unit frame 21, and a nozzle 25 and a center support 22 integrally connected to the frame 21 and formed at a lower end portion and a center portion, respectively. The nozzle 25 is a through-hole through which one needle passage 1200 can pass, and one needle passage 1200 can protrude downward by a prescribed length through the nozzle 25.

The center support portion 22 has an upwardly open receiving portion and is formed in the center of the nozzle portion 20. As shown in fig. 3, the center shaft 1550 is provided along the center axis of the housing 10 in the longitudinal direction, and in order to fasten the nozzle portion 20 to the housing 10, the lower end portion of the center shaft 1550 is at least partially sandwiched by the receiving portion of the center support portion 22 of the nozzle portion 20. At this time, the frame 21 of the nozzle portion 20 is engaged with the lower end portion of the housing 10.

In one embodiment, an annular needle length adjustment ring 40 may be removably secured to the lower end of the housing 10. The needle length adjustment ring 40 is an annular member having a thread 41 formed on an inner side surface thereof, and the thread 41 is configured to engage with the thread 15 formed on an outer side of a lower end portion of the housing 10. Needle length adjustment ring 40 is configured to support lifting gear support 1400 below. For example, the needle length adjusting ring 40 is provided to support the elevation gear supporting portion 1400 at the lower side while being in contact with one or more connection tabs 1420, 1430 formed protruding on the outer circumferential surface of the elevation gear supporting portion 1400, so that the needle length adjusting ring 40 can be used as a stopper to determine a stop position when the elevation gear supporting portion 1400 descends.

Preferably, the needle length adjustment ring 40 may be configured to be able to adjust the fastening height with the housing 10. For example, when the screw thread 41 of the needle length adjustment ring 40 is engaged with the screw thread 15 of the housing 10 to be fastened, the height of the needle length adjustment ring 40 fastened to the housing 10 can be adjusted by adjusting the fastening rotation amount of the needle length adjustment ring 40. Also, if the fastening height is adjusted in this way, the stop height at the time of lowering the elevating gear support 1400 can be adjusted, and thus the degree to which the needle 1220 of the needle passage lowered while being engaged with the elevating gear support 1400 protrudes downward through the nozzle 25 of the nozzle part 20, that is, the protruding length of the needle 1220 of the needle passage can be adjusted.

In one embodiment, the needle length adjusting ring 40 may also have a function of completely engaging the nozzle portion frame 21 with the lower end portion of the housing 10. For example, the needle length adjustment ring 40 surrounds and fastens the nozzle portion frame 21 and the lower end portion of the housing 10, so that detachment of the nozzle portion frame 21 due to expansion of the lower end portion of the housing 10 can be prevented, whereby the center support portion 22 of the nozzle portion 20 is supported by sandwiching the center shaft 1550, and the frame 21 of the nozzle portion 20 is supported and fixed by the lower end portion of the housing 10 and the needle length adjustment ring 40, whereby the nozzle portion 20 can be fastened to the housing 10 more reliably and firmly.

According to the structure of the nozzle part 20 described above, convenience is provided when an operator loads (installs) hair follicles to the needle heads 1220 of each needle channel 1200. In this connection, fig. 5 is a view showing a lower region of the hair transplanter in a state where the lower cover 50 is removed. Referring to fig. 5, most areas of the nozzle portion 20 except the nozzle 25 and the center support portion 22 are opened downward, so that the needle 1220 of each needle channel 1200 of the bundle of needle channels is exposed. Accordingly, in this state, the operator can mount hair follicles on each needle 1220, and thus, the hair follicle mounting operation can be performed more simply and rapidly than in the conventional structure in which the nozzle 20 needs to be removed in order to mount hair follicles.

Referring again to fig. 2 to 4, the hair transplantation device includes: a push rod 1530 pushing down one needle channel 1200 of the bundle of needle channels B. The push rod 1530 is provided between the upper portion of the needle passage bundle B in the housing 10 and the upper cover 30, and at this time, the push rod 1530 is elastically coupled to the upper cover 30 by an elastic member such as a spring 1540. The push rod 1530 and the nozzle 25 of the nozzle portion 20 are positioned in alignment. Thus, when the push rod 1530 pushes down the needle channel 1200, the needle head 1220 of the pushed needle channel 1200 may protrude a prescribed length through the nozzle 25.

Fig. 6 is a diagram for explaining a needle passage bundle B according to an embodiment. Referring to fig. 6, the needle passage bundle B is composed of a bundle body portion 1100 and a plurality of needle passages 1200 respectively slidably coupled to an outer peripheral surface of the bundle body portion 1100 in the up-down direction.

In one embodiment, the bundle body portion 1100 may be composed of a cylindrical channel coupling portion 1110 and a head portion 1120 formed at an upper portion of the channel coupling portion 1110. The channel joint 1110 and the head 1120 may be integrally formed, or may be separately manufactured and then joined. Since the channel coupling portion 1110 and the head portion 1120 have vertically penetrating openings formed therein, the central shaft 1550 may be provided to penetrate the bundle body portion 1100 as shown in fig. 3 or 4.

A plurality of slide rails 1115 are formed on the outer peripheral surface of the channel coupling portion 1110 at equal intervals in a radial direction with respect to the central axis of the channel coupling portion 1110. In one embodiment, the slide rails 1115 are recessed long in the up-down length direction, and each needle channel 1200 is slidably clamped in the up-down direction to each slide rail 1115 for coupling.

The head 1120 has a diameter larger than that of the channel coupling portion 1110, whereby the head 1120 serves as a stopper for preventing the needle channel 1200 from moving upward. As shown in fig. 4, the spring 1520 is interposed between the head 1120 and the upper cover 30, and the spring 1520 can elastically support the needle passage bundle B downward.

On the other hand, the protective cover 60 for protecting the needle 1220 of the needle channel 1200 can be detachably fastened to the lower portion of the needle channel bundle B. When the needle passage bundle B is mounted on the hair transplanter, the protective cover 60 is removed and then inserted into the housing 10 to perform the mounting (refer to fig. 3 or 4), and when the needle passage bundle B is removed from the housing 10 for replacement or replacement, the protective cover 60 may be fastened to the needle passage bundle B to protect the needle 1220.

Fig. 7 and 8 are diagrams showing a needle channel 1200 according to an embodiment, fig. 7 (a) is a perspective view of the needle channel 1200, fig. 7 (b) is a sectional view, and fig. 8 is an exploded perspective view.

Referring to fig. 7 and 8, the needle passage 1200 may be formed of a main body portion 1210 having a tubular inner space in the up-down direction; a needle 1220 coupled to a lower portion of the main body 1210; and a needle shaft 1230 slidably disposed in the tubular inner space.

The tubular inner space of the body portion 1210 may be constituted by a first diameter portion 1210a of a relatively large diameter upper portion and a second diameter portion 1210b of a relatively small diameter lower portion. The lower second diameter portion 1210b has a diameter through which the needle shaft 1230 can pass, and the upper first diameter portion 1210a has a diameter to accommodate the spring 1241 clamped around the needle shaft 1230. The root transplanting needle 1220 may be inserted through the opened lower end portion of the second diameter portion 1210b of the main body portion 1210 and coupled to the main body portion 1210. The needle 1220 has a hollow cylindrical shape, that is, a cylindrical shape having a through-hole formed along a longitudinal direction, and the through-hole of the needle 1220 communicates with the inner space of the main body 1210.

Fig. 9 shows a lower end configuration of needle 1220 according to one embodiment. Fig. 9 (a) is a view from the radially outer side of the needle passage bundle B toward the central axis, and fig. 9 (B) is a cross-sectional view from the side.

As shown, the needle 1220 is formed with a slot 1221 opened to the outside at the side of the lower end thereof so as to clamp hair follicles. The inner space of the needle 1220 is inserted and provided with a needle shaft 1230, and the lower end of the needle shaft 1230 is located below the uppermost end of the slot 1221 and does not protrude below the lowermost end of the needle 1220. The above-described slot 1221 is formed toward the radially outer direction of the needle passage bundle B, thereby facilitating the hair follicle mounting operation of the operator.

The main body 1210 includes a side projection 1213 formed along a side surface in the up-down length direction. The side surface protruding portion 1213 protrudes in a direction toward the channel coupling portion 1110, that is, in a radially inward direction, and a protruding portion shape of the side surface protruding portion 1213 is configured to engage with a shape of a groove portion of the slide rail 1115 of the channel coupling portion 1110. Accordingly, the side protruding portion 1213 of the main body portion 1210 is engaged with the slide rail 1115 of the channel coupling portion 1110, so that the needle channel 1200 can slide in the up-down direction along the slide rail 1115.

Referring again to fig. 7 and 8, the needle channel 1200 includes a catching protrusion 1211 formed to extend from the main body 1210 in the opposite direction of the side protrusion 1213 of the main body 1210, i.e., in the radially outer direction of the needle channel bundle B. The click-on protrusion 1211 includes: the ratchet teeth 1212 include a slot 1215 formed in the up-down direction, a protrusion 1217 formed to extend so as to protrude more in the radial outer direction from the surface of the click-on protrusion 1211, and a zigzag ratchet tooth ratchet geartooth formed at the lower end of the click-on protrusion 1211 and having only a unidirectional inclination angle.

The slot 1215 is formed in the main body 1210 along a longitudinal direction (up-down direction) and has a shape that is open toward one side surface of the main body 1210. For example, the insertion groove 1215 is formed on a surface of the click projection 1211 in a radial outer direction along the up-down direction, and communicates with the tubular inner space of the main body 1210. The tubular inner space is provided with a needle shaft 1230, and a rod 1231 is coupled to an upper end of the needle shaft 1230. The lever 1231 is guided by the slot 1215 and can slide in the up-down direction. The spring 1241 is sandwiched around the needle shaft 1230. The upper end of the spring 1241 is supported on the lower face of the lever 1231, and the lower end of the spring 1241 is supported on the stepped portion between the first diameter portion 1210a and the second diameter portion 1210b within the main body portion 1210.

The upper end of the slot 1215 is opened, and the upper cover 1250 is clamped to the opened upper end and coupled with the slot 1215. The upper cover 1250 has the function of a stopper (stopper) so that the rod 1231 is not moved upward any more. As shown in fig. 6, the upper face of the upper cover 1250 has a surface inclined toward one direction so that the needle passage bundle B can smoothly rotate. That is, the surface 1251 of the upper cover 1250 is formed as an inclined surface inclined by a prescribed inclination angle 1253 in the rotation direction of the needle passage bundle so that the rotation of the needle passage bundle B is not hindered by the push rod 1530 contacting the upper surface of the upper cover 1250.

The body portion 1210 of the needle channel 1200 also includes a catch 1219. The catching groove 1219 is formed below the catching projection 1211 at a surface facing the radially outer side of the main body 1210. The slot 1219 may receive a fastener 1910 of the needle channel clip portion 1900.

In one embodiment, the body portion 1210 may further include a rotor guide 1270 extending downward. The rotor guide 1270 is formed to extend downward from the lower end portion of the main body 1210 so as to surround at least a part of the outer peripheral surface of the needle 1220. For example, in the embodiment shown in fig. 7 and 8, the rotor guide 1270 may be configured to encompass about half of the entire circumference (i.e., 360 degrees) of the outer circumferential surface of the needle 1220 (i.e., 180 degrees). It is exemplary and, for example, in alternative embodiments, rotor guide 1270 may also be configured to enclose needle 1220 in a range between 90 degrees and 270 degrees around needle 1220.

Further, as shown in fig. 5, with respect to the length of the rotor guide 1270 extending from the lower end portion of the main body 1210, it is preferable that the lower end portion of the rotor guide 1270 protrudes further downward than the lower end portion of the nozzle 25 to be exposed to the outside in a state where the needle 1220 of the needle passage 1200 passes through the through-hole of the nozzle 25 of the nozzle portion for hair transplantation.

On the other hand, as shown in fig. 3 and 4, the hair transplantation device includes a push rod 1530 pushing one needle channel 1200 of the needle channel bundle B downward. The push rod 1530 is elastically coupled to the upper cover 30 by an elastic member such as a spring 1540, and is provided to press one needle passage 1200 of the needle passage bundle B from the top down. The push rod 1530 and the nozzle 25 are aligned on the same vertical line, so that when the push rod 1530 pushes down the needle channel 1200, the needle 1220 of the pushed needle channel 1200 can protrude a prescribed length through the nozzle 25.

Fig. 10 schematically shows an exemplary structure of the nozzle portion 20 according to an embodiment, fig. 10 (a) is a view of the nozzle portion 20 seen from below upward, and fig. 10 (b) is a view of a part of fig. 10 (a) enlarged, that is, a view of a case where the needle 1220 and the rotor guide 1270 of the needle passage 1200 pass through the nozzle 25.

Referring to fig. 10 (a), the nozzle 25 has a through-hole 26 through which the needle 1220 passes, and more preferably, the through-hole 26 has a shape through which the needle 1220 and the rotor guide 1270 surrounding a portion of the needle 1220 can pass. For example, in the embodiment of fig. 10 (a), the through-hole 26 may be constituted by a small diameter region 26a having a first radius from the center C of the through-hole 26 and a large diameter region 26b having a second radius greater than the first radius from the center C. The small diameter region 26a may be a region through which the needle 1220 is passed without being surrounded by the rotor guide 1270, and the large diameter region 26b may be a region through which the rotor guide 1270 surrounding the needle 1220 is passed.

In one embodiment, the nozzle 25 may further include a slot 27 extending from the through opening 26 to a side of the nozzle 25. The slot 27 may be formed to align with the slot 1221 of the needle 1220 in the same direction.

Referring to fig. 10 b, the inner periphery (inner peripheral surface) of the through-hole 26 of the nozzle 25 is defined by a first inner peripheral surface 261 defining the periphery of the small diameter region 26 a; a second inner peripheral surface 262 defining the periphery of the large diameter region; and a step 263 connecting the first inner peripheral surface 261 and the second inner peripheral surface 262. The length of the stepped portion 263 should be understood to correspond to the difference between the first radius of the small diameter region 26a and the second radius of the large diameter region 26 b.

In one embodiment, the second radius of the large diameter region 26b may have a length equal to or slightly larger than the distance from the central axis of the needle 1220 to the first outer peripheral surface 1271 of the rotor guide 1270 in the radial direction, and thus, as shown in fig. 10 (b), the rotor guide 1270 relatively slides with respect to the through-hole 26 in a state where the first outer peripheral surface 1271 of the rotor guide 1270 is abutted against the second inner peripheral surface 262 of the through-hole 26.

Also, in an embodiment, the rotor director 1270 has a second outer peripheral surface 1272 that extends in a radial direction (i.e., a direction having a normal vector direction of the surface that is at right angles to the radial direction for the illustrated embodiment). The rotor guide 1270 is relatively slidable with respect to the through-hole 26 in a state where the second outer peripheral surface 1272 at least partially contacts the stepped portion 263 of the through-hole 26. Accordingly, the first and second outer peripheral surfaces 1271 and 1272 of the rotor guide 1270 are supported and slid by the second inner peripheral surface 262 and the stepped portion 263 of the through-hole 26, respectively, and thus the needle 1220 and the rotor guide 1270 can be advanced and retracted without shaking left and right with respect to the body of the hair planter.

Fig. 11 shows a needle shaft snap-in portion 1700 according to an embodiment, fig. 11 (a) is a view seen from the side, and fig. 11 (b) is a view seen from the front. The needle shaft engaging portion 1700 is provided on the radially outer side surface of the needle passage pushed downward by the push rod 1530. In one illustrated embodiment, the needle shaft interface 1700 is mounted to a side of the housing 10. The needle shaft engaging portion 1700 temporarily stops the movement of the needle shaft 1230 in the needle passage 1200 while the needle passage 1200 is pushed down by the push rod 1530 and then rises again.

Referring to the drawings, the needle shaft engaging portion 1700 may be constituted by a fastener 1710, a fastener accommodating portion 1720 for accommodating the fastener 1710, and an elastic member 1730 sandwiched between the fastener 1710 and the fastener accommodating portion 1720.

For example, the fastener receiving portion 1720 may be bolted and fixed to one side of the housing 10 by bolt grooves of the extension regions 1723 of the left and right sides. Here, the bolt groove of the fastener housing portion 1720 may be rectangular in shape, whereby the position of the fastener 1710 can be adjusted. The position of the fastener determines the length of the needle shaft 1230 protruding outward of the nozzle 25 during the insertion of the hair follicle, thereby affecting the depth of the follicle being planted. The inside of the fastener housing portion 1720 has a space capable of housing the fastener 1710, and an elastic member 1730 such as a spring is sandwiched in the space. Thus, the clip 1710 is provided within a distance in which the interference lever 1231 moves up and down, and is configured to be elastically retractable in the radial outer direction of the needle passage bundle B.

When the fastener 1710 is not under force, the fastener 1710 protrudes from the fastener receiving portion 1720 (the radially inner direction of the needle passage bundle B) so as to contact the rod 1231 when the rod 1231 slides up and down. At this time, as shown in fig. 11 (a), the upper side of the contact surface of the clip 1710 which contacts the lever 1231 is inclined upward, and the lower lever contact surface 1711 is formed in a substantially horizontal direction. Therefore, when the rod 1231 descends from the upper side of the buckle 1710 to the lower side, the rod 1231 can push the buckle 1710 to the buckle accommodating portion 1720 side and descend, but when the rod 1231 ascends from the lower side of the buckle 1710 to the upper side, the upper surface of the rod 1231 contacts the rod contact surface 1711 of the buckle 1710 and is caught, so that the rod 1231 cannot ascend any more.

On the other hand, the side surface of the insertion groove 1215 of the needle channel 1200 is formed with a protrusion 1217 protruding toward the radial outside direction of the needle channel bundle B. The protrusion 1217 protrudes in the radial outward direction, and protrudes outward like the rod 1231 or further than the rod 1231. The left-right width of the fastening piece 1710 is set so that the fastening piece 1710 interferes not only with the rod 1231 but also with the up-down movement of the protruding portion 1217, and as shown in the figure, the upper side of the contact surface of the fastening piece 1710 which contacts the protruding portion 1217 is inclined upward, and the contact surface 1713 of the lower protruding portion is also inclined downward. Accordingly, regardless of whether the needle channel 1200 is raised upward from the lower side of the clip 1710 or lowered downward from the upper side, the protrusion 1217 can push the clip 1710 toward the clip receiving portion 1720 side and raise/lower the needle channel 1200.

The operation of the needle shaft 1230 to be engaged with the needle shaft engaging portion 1700 having the above-described structure and to disengage the engagement will be described with reference to fig. 12.

Fig. 12 (a) shows a state before the needle channel 1200 attached to the needle channel bundle B descends to the lower side. In this state, the rod 1231 and the projection 1217 of the needle channel 1200 are both positioned above the fastener 1710 of the needle shaft engaging portion 1700.

If the push rod 1530 pushes the needle channel 1200 downward, the needle channel 1200 descends downward. As the needle channel 1200 descends, the needle channel 1200 and the rod 1231 may descend while pushing the clip 1710 toward the clip receiving portion 1720, since the protrusion 1217 and the rod 1231 contact the inclined surface of the clip 1710.

As shown in fig. 12 (b), when the rod 1231 is lowered to a position lower than the catch 1710, the rod 1231 is not lowered downward but is raised upward by the spring 1241, but the upper surface of the rod 1231 contacts the rod contact surface 1711 of the catch 1710, and the rod 1231 is caught by the catch 1710.

Then, as shown in fig. 12 (c), when the needle passage 1200 is lifted, the rod 1231 and the needle shaft 1230 integrally combined with the rod cannot be lifted due to the rod 1231 being caught by the catch 1710.

When the needle passage 1200 is further raised, as shown in fig. 12 (d), the protrusion 1217 contacts the fastener 1710 and pushes the fastener 1710 toward the fastener receiving portion 1720. Accordingly, when the clip 1710 is retracted to the clip receiving portion 1720, the clip engagement of the clip to the lever 1231 is released, and the lever 1231 and the needle shaft 1230 are raised by the elastic force of the spring 1241 and return to the state shown in fig. 12 (a).

Fig. 13 is a diagram for explaining the advancing and retreating actions of the needle channel 1200 for transplanting hair according to an embodiment.

Fig. 13 (a) shows a state before the needle head 1220 of the needle passage 1200 for transplanting hair is inserted into the hair transplanting position of the scalp. In this state, hair follicles for transplantation are accommodated in the needle 1220, and the needle 1220 and a part of the rotor guide 1270 protrude downward from the lower end 25a of the nozzle 25. Specifically, the needle shaft 1230 within the needle 1220 protrudes downward from the lower end 25a of the nozzle 25 by a first distance d1, and the lower end 1270a of the rotor guide 1270 protrudes downward from the lower end 25a of the nozzle 25 by a second distance d2. At this time, the second distance d2 is preferably greater than the first distance d1. Preferably, the second distance d2 is smaller than a third distance d3, and the third distance d3 is a distance from the lower end of the nozzle 25 to a point where the taper (tip) of the tip end of the needle 1220 starts to be formed.

In this state, for example, the operator inserts the needle 1220 into the scalp by moving the hair-planting device downward manually or automatically using an automatic hair-planting device. When the lower end 1270a of the rotor guide 1270 contacts the scalp, the needle 1220 is not entered any more, and thus the rotor guide 1270 functions to determine the insertion depth of the needle 1220. On the other hand, in the state shown in fig. 13 (b), the hair follicle in the needle 1220 may not be completely inserted into the scalp.

Thereafter, needle 1220 and rotor guide 1270 begin to undergo relative upward movement with respect to the body of the hair planter. For example, as shown in fig. 12 (c), the needle passage 1200 is lifted, and the rod 1231 and the needle shaft 1230 integrally combined therewith cannot be lifted because the rod 1231 is caught by the catch 1710, and the body 1210 (integrally combined with the rotor guide 1270) of the needle passage 1200 and the needle head 1220 are lifted. However, in the state shown in fig. 13 (b), the operator presses the hair implanter body toward the scalp, and thus the same effect as the relative lowering of the hair implanter body with respect to the needle 1220 and the rotor guide 1270 is produced. That is, from the state of fig. 13 (b) to the state of fig. 13 (c), the needle 1220 and the rotor guide 1270 are in a stationary state with respect to the scalp, and the hair implanter body including the nozzle 25 and the needle shaft 1230 is lowered until the lower end 25a of the nozzle 25 contacts the scalp.

As shown in fig. 13 (c), when the lower end portion 25a of the nozzle 25 contacts the scalp, the needle shaft 1230 protruding further downward by the first distance d1 than the lower end portion 25a pushes the hair follicle further downward, so that the hair follicle can be placed inside the scalp.

As shown in fig. 12 (c) and 12 (d), while the needle 1220 is raised to a predetermined height, the needle shaft 1230 is in a stationary state, and the remaining components of the needle passage 1200, such as the main body 1210, the needle 1220, and the rotor guide 1270, except for the needle shaft 1230, continue to rise. That is, as shown in fig. 13 (c) and 13 (d), after the lower end 25a of the nozzle contacts the scalp, the needle 1220 and the rotor guide 1270 are relatively moved upward with respect to the scalp (fig. 13 (d)), and then the needle shaft 1230 is also moved upward from the needle 1220 to a predetermined height. At this time, the operator or the automatic hair planting device may continue to attach the hair planter body to the scalp such that the nozzle lower end 25a contacts the scalp until the needle 1220 is lifted up and away from the scalp. Alternatively, the operator or automatic hair planting device may also continue to apply the hair planter body against the scalp such that the nozzle lower end 25a contacts the scalp until the needle shaft 1230 rises and exits the scalp.

In this way, after the needle 1220 and/or the needle shaft 1230 are separated from the scalp and lifted upward, the hair planting device body is lifted upward, so that one hair planting operation can be completed. Also, in one embodiment, the tufter prepares for a secondary tufting operation by: when the needle 1220 and the needle shaft 1230 are raised by a prescribed height, the needle passage bundle B is rotated by a prescribed angle by the structures of the ratchet support 1300 and the elevating gear support 1400, etc., and the push rod 1530 pushes the needle passage adjacent to the needle passage just used for the hair planting operation, so that the needle 1220 is brought into a state of passing through the nozzle 25 and protruding downward as shown in fig. 13 (a).

As can be seen from a comparison of the prior art hair-grafting action according to fig. 1 and the hair-grafting action according to an embodiment of the present utility model of fig. 13, in the present utility model, the needle 1220 is inserted into the skin at a relatively shallow depth, and then the hair-grafting body including the nozzle 25 and the needle shaft 1230 performs an additional action of descending toward the scalp, so that hair follicles can be stably transplanted into the scalp, damage or bleeding of the scalp of a patient can be reduced, and the patient or operator's resistance to the hair transplantation operation can be reduced.

As described above, various modifications and variations can be made by those skilled in the art to which the present utility model pertains from the descriptions of the above description. The scope of the utility model should, therefore, be determined not with reference to the above-described embodiments, but instead should be determined with reference to the appended claims along with the scope of equivalents to which such claims are entitled.

Claims (6)

1. A needle channel that is a needle channel that can be used in a hair transplanter, comprising:

A main body (1210) having an inner space in the up-down direction;

a needle (1220) that is coupled to the lower end of the main body in a protruding manner and has a through-hole that communicates with the internal space of the main body;

A needle shaft (1230) which is provided in the interior space of the main body and the through hole of the needle and can slide along the up-down direction,

And, the main body portion has a rotor guide (1270) configured to extend downward from a lower end portion of the main body portion so as to partially surround at least a part of an outer peripheral surface of the needle.

2. A needle passage as claimed in claim 1, wherein,

The rotor guide is configured to surround an outer circumferential surface of the needle through at least a portion of a length of the needle.

3. The needle channel as in claim 1, further comprising:

A slot (1215) formed in the main body along the longitudinal direction and opening toward one side surface of the main body;

A rod (1231) coupled to the upper end of the needle shaft and capable of sliding in the up-down direction in the insertion groove; and

A spring (1241) which is clamped around the needle shaft.

4. A hair planter, characterized in that it is a hair planter having a plurality of needle channels according to any one of claims 1 to 3, comprising:

A nozzle part (20) fastened to the lower part of the body of the hair-planting device and having a nozzle (25) through which the needle of one needle passage passes,

The through-hole (26) of the nozzle (25) is composed of a small diameter region (26 a) having a first radius from the center (C) of the through-hole (26) and a large diameter region (26 b) having a second radius greater than the first radius from the center (C).

5. The hair planter as claimed in claim 4, wherein,

A first outer peripheral surface (1271) of the rotor guide (1270) is relatively slidably abutted against an inner peripheral surface (262) of a large diameter region (26 b) of the through hole (26).

6. The hair planter as claimed in claim 5, wherein,

A second outer peripheral surface (1272) of the rotor guide (1270) is relatively slidably abutted against a stepped portion (263) between a small diameter region (26 a) and a large diameter region (26 b) of the through-hole (26).