Encrypted microneedle for autologous hair transplantation

Abstract

The application discloses a kind of encryption microneedle for autologous hair transplantation, belong to medical instrument technical field, the encryption microneedle for autologous hair transplantation, including main stem body, the top end of the main stem body is equipped with limiting body, the bottom end of the main stem body is equipped with microneedle body, the bottom end of the outside of the microneedle body is equipped with the slot for placing hair follicle, the center position of the top end of the limiting body is equipped with fixed seat, the outside of the microneedle body is equipped with the shielding mechanism for shielding slot, the bottom end of the outside of the main stem body is equipped with trigger mechanism, the outside of the trigger mechanism is driven connection with shielding mechanism by transmission mechanism.The application is threaded with the thread cooperation of outer thread and inner thread pipe, rotates outer sleeve tube can drive inner thread pipe to move up and down along main stem body, and then the rising height of second sleeve in drive mechanism is limited by abutment rod, the depth of microneedle body insertion scalp can be accurately controlled in combination with the linkage relationship of second sleeve and microneedle body.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to an encryption microneedle for autologous hair transplantation. BACKGROUND

[0002] Autologous hair transplantation is a surgical technique that applies microsurgery, which takes a portion of healthy hair follicle tissue, carefully processes and cultures it, and then transplants it to the bald or hairless areas of the patient in an artistic manner according to the natural hair growth direction. After the hair follicle survives, it will grow new healthy hair, and the new hair will maintain all the biological characteristics of the original hair and will not fall off or die again. During the hair transplantation process, the encryption microneedle is one of the essential tools to ensure the effectiveness of hair transplantation.

[0003] The existing hair transplantation microneedle has a slot on the side wall of the needle body to achieve rapid placement of the hair follicle. The medical staff needs to send the hair follicle into the internal channel of the microneedle through the slot. However, due to the structural design, the slot is always open. During the entire process from placing the hair follicle into the microneedle to inserting the microneedle into the scalp, the slot is directly connected to the external environment, which causes the hair follicle to be exposed to the air for a long time, accelerates the loss of moisture in the hair follicle, and damages the activity of the hair papilla cells. On the other hand, dust, bacteria, and other impurities in the air can easily contaminate the hair follicle through the slot, increasing the risk of postoperative infection. Moreover, there are significant individual differences in the thickness of the scalp of different patients, and the scalp conditions in different implantation areas of the same patient are also different. In addition, the length of the hair follicle also requires individualized insertion depth. Most traditional techniques rely on the experience of medical staff to determine the insertion depth, which cannot be dynamically adjusted according to the real-time scalp conditions and hair follicle characteristics of the patient. If the insertion is too shallow, the hair follicle may not be fully implanted into the subcutaneous tissue, which may lead to ischemic necrosis or falling off due to external force. If the insertion is too deep, it may penetrate the subcutaneous fascia layer, damaging blood vessels and nerves, and affecting the survival rate of the hair follicle. Moreover, most existing microneedles are single-needle structures, which rely only on the holding force of the medical staff's hands to maintain stability during insertion into the scalp. During the critical period of insertion and removal of the microneedle, due to the frictional adhesion between the scalp and the needle body, and the lack of fixation structure around the implantation hole, the hair follicle is easily brought out of the scalp with the microneedle, forming an "empty hole implantation". This not only requires a second implantation, increasing the operation time and consumption of hair follicle resources, but also may aggravate the scalp trauma due to repeated operations, further reducing the survival probability of the hair follicle. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the existing technology and provide an encryption microneedle for autologous hair transplantation.

[0005] The technical scheme adopted to solve the above technical problems is: a kind of encryption microneedle for autologous hair transplantation, including main stem body, the top end of the main stem body is equipped with limiting body, the bottom end of the main stem body is equipped with microneedle body, the bottom end of the outside of the microneedle body is equipped with slot for placing hair follicle, the top end of the limiting body is equipped with fixed seat at the center position, the outside of the microneedle body is equipped with shielding mechanism for shielding slot, the bottom end of the outside of the main stem body is equipped with trigger mechanism, the outside of the trigger mechanism is connected with shielding mechanism through transmission mechanism, the top end of the outside of the main stem body is equipped with adjusting mechanism.

[0006] Further, the shielding mechanism includes a shielding tube body fitted outside the microneedle body, a strip-shaped loading inlet is formed at the bottom end of the outside of the shielding tube body and cooperates with the slot, and a connecting seat is installed at the top end of the outside of the shielding tube body.

[0007] Through the above technical scheme, in the initial state, the strip-shaped loading inlet of the shielding tube body coincides with the slot of the microneedle body, which facilitates the placement of the hair follicle, when the first sleeve is lowered and rotated clockwise by half a turn, the sleeve ring, connecting rod, connecting seat and shielding tube body are lowered and rotated clockwise by half a turn together, so that the shielding tube body completely covers the slot, and in the process of pulling out the microneedle body by the operator, the shielding tube body is lowered and rotated clockwise by half a turn again, at this time, the strip-shaped loading inlet coincides with the slot again, the shielding tube body can be flexibly rotated to quickly coincide or shield the strip-shaped loading inlet and the slot, which facilitates the quick placement of the hair follicle, and can avoid the direct contact of the hair follicle with the external air and dust before being inserted into the scalp, reduces the risk of oxidation damage and pollution, and effectively preserves the activity of the hair follicle.

[0008] Further, the transmission mechanism includes a sleeve ring fitted at the bottom end of the outside of the main stem body, a first sleeve is installed at the outside of the sleeve ring, a limiting column is symmetrically installed at the top end of the outside of the first sleeve, and the ends of the two groups of limiting columns close to each other extend to the inside of the first sleeve, and three groups of connecting rods integrally formed with the connecting seat are installed at the bottom end of the sleeve ring along the circumference at equal intervals.

[0009] Through the above technical scheme, the first sleeve is manually pushed upward to rise, the two groups of limiting columns inside the first sleeve rise in the straight slot, when the inner ends of the limiting columns move to the top end in the straight slot, the inclined surface guide forces the inner ends of the limiting columns to move to one end of the arc-shaped groove at the high position, then the first sleeve drives the second sleeve to rise together through the limiting column, after the first sleeve is released, the elastic potential energy of the first spring drives the first sleeve to slide downward outside the second sleeve through the spacer ring and the sleeve ring, the first sleeve rotates clockwise by half a turn in the process of descending, the shielding tube body is driven to act together through the sleeve ring, connecting rod and connecting seat, to realize the automatic rotation of the shielding tube body, which realizes the quick coincidence or shielding of the strip-shaped loading inlet and the slot, without manually adjusting the shielding tube body separately, simplifying the hair follicle placement process and improving the single operation efficiency.

[0010] Further, the trigger mechanism comprises a second sleeve arranged on the middle part of the outer side of the main rod body, the bottom of the outer side of the main rod body is arranged with a first spring and a spacer ring from top to bottom, and the top end and bottom end of the first spring are fixedly connected with the second sleeve and the spacer ring respectively, the outer side of the second sleeve is arranged with two groups of arc-shaped grooves and two groups of straight grooves which are matched with the inner end of the limiting column, the two groups of arc-shaped grooves are centrally symmetrically distributed on the outer side of the second sleeve, the two groups of straight grooves are axially symmetrically distributed on the outer side of the second sleeve, and the ends of the two groups of arc-shaped grooves close to each other are communicated through the straight grooves, the top end of the outer side of the second sleeve is symmetrically provided with a guide part matched with the outer end of the limiting column, and the second sleeve is movably connected with the outer side of the main rod body through a connecting part.

[0011] Through the above technical scheme, the inner end of the limiting column can move in the straight grooves and the arc-shaped grooves, the second sleeve is lifted by the limiting column when the first sleeve is lifted, and the second sleeve is stopped against the top end of the second sleeve; after the first sleeve is loosened, the elastic potential energy of the second spring drives the sliding block to drive the second sleeve to move downward, and the elastic potential energy of the first spring also drives the first sleeve to slide through the related parts, and the inner end of the limiting column slides from the high position to the low position in the arc-shaped grooves, so that automatic rotation of the shielding pipe body is realized, and the elastic potential energy of the spring is used to realize automatic resetting of the parts, thereby improving the operation convenience.

[0012] Further, the guide part comprises a guide block located directly above the straight grooves, the bottom of the guide block is provided with an inclined surface matched with the outer end of the limiting column, and the side of the bottom end of the guide block close to the second sleeve is arranged with a give-way groove matched with the first sleeve.

[0013] Through the above technical scheme, when the inner end of the limiting column moves to the top end in the straight grooves, the guide of the inclined surface forces the inner end of the limiting column to move to the high-position end in the arc-shaped grooves, the give-way groove provides space for the movement of the first sleeve, the inclined surface plays a guiding role, ensures that the limiting column can smoothly enter the arc-shaped grooves from the straight grooves, ensures the accuracy of the action of the first sleeve driving the second sleeve, and the give-way groove avoids interference between the first sleeve and the guide block, thereby ensuring the smoothness of the movement of the parts.

[0014] Further, the connecting part comprises a sliding groove, the sliding groove is provided with two groups, and the two groups of sliding grooves are symmetrically distributed on the middle part of the outer side of the main rod body, the inner part of the two groups of sliding grooves is provided with a sliding block fixedly connected with the inner side of the second sleeve, and the inner top end of the sliding groove is provided with a second spring fixedly connected with the top end of the sliding block.

[0015] Through the technical scheme, after the first sleeve is loosened, the elastic potential energy of the second spring drives the sliding block to move in the sliding groove, drives the second sleeve to move downward, until the sliding block moves to the bottom end of the sliding groove, the connecting part provides guidance for the up-down movement of the second sleeve, ensures the stability of the movement of the second sleeve, and the elastic potential energy of the second spring realizes automatic resetting of the second sleeve, without manual operation, thereby improving the automation degree and operation convenience of the device.

[0016] Further, the bottom of the spacer ring is uniformly provided with a steel ball roller in rolling cooperation with the top of the sleeve ring, the steel ball roller is used to convert sliding friction between the spacer ring and the sleeve ring into rolling friction to reduce wear, and the bottom end of the outer side of the main rod body is provided with a limiting ring.

[0017] Through the technical scheme, when the elastic potential energy of the first spring drives the first sleeve to slide through the spacer ring and the sleeve ring, the steel ball roller reduces the friction between the spacer ring and the sleeve ring, converts the sliding friction into rolling friction, reduces the wear between the parts, makes the sliding of the first sleeve smoother, prolongs the service life of the device, the limiting ring limits the movement of the sleeve ring, prevents the sleeve ring from being damaged due to excessive movement, and ensures the stable operation of the device.

[0018] Further, a bottom ring is installed at the bottom end of the outer side of the shielding pipe body, the bottom of the bottom ring is gradually recessed from the edge part to the center part, and an arc-shaped notch is formed in the part close to the strip-shaped loading inlet of the bottom ring, the arc-shaped notch is used to provide a space for the hair follicle to enter the microneedle body through the strip-shaped loading inlet.

[0019] Through the technical scheme, when the microneedle body pierces the scalp, the bottom ring abuts against the scalp, the recessed structure at the bottom thereof extrudes the scalp around the implantation hole to the center, the arc-shaped notch provides a space for the strip-shaped loading inlet and the groove to coincide and the hair follicle to be placed, the bottom ring enhances the stability of the microneedle body insertion through physical support, avoids the needle body from deviating and damaging the hair follicle, extrudes the scalp to form a "wrapped fixing" of the hair follicle, effectively prevents the hair follicle from falling off with the needle when the microneedle body is pulled out, improves the success rate of hair follicle implantation, and ensures the smooth operation of the hair follicle placement operation.

[0020] Further, the adjusting mechanism comprises an external thread at the top end of the outer side of the main rod body, an internal threaded pipe is threadedly arranged at the top end of the outer side of the main rod body through the external thread, an outer sleeve is installed at the outer side of the internal threaded pipe, and three groups of limiting rods for limiting the rising height of the second sleeve are uniformly installed at the bottom of the internal threaded pipe.

[0021] By the above technical scheme, the outer sleeve is held to rotate the inner threaded pipe along the outer thread outside the main rod body, the inner threaded pipe drives the abutting rod to move up and down until the abutting rod and the top end of the second sleeve match the preset depth, the moving distance of the inner threaded pipe is read through the length scale line outside the limiting body to calibrate the insertion depth of the microneedle body, the precise adjustment of the position of the abutting rod is realized through the thread cooperation of the outer thread and the inner threaded pipe, and then the rising height of the second sleeve is limited, the depth of the microneedle body inserted into the scalp is precisely controlled in combination with the linkage relationship between the second sleeve and the microneedle body.

[0022] Further, the outer sleeve is sleeved outside the limiting body, the outer side of the limiting body is provided with a length scale line matched with the outer sleeve, and the outer side of the outer sleeve is provided with an anti-skid pattern.

[0023] By the above technical scheme, the outer sleeve is held to rotate, the inner threaded pipe is driven to move along the outer thread, the moving distance of the inner threaded pipe is observed and calibrated through the length scale line, the anti-skid pattern increases the friction force between the hands of the operator and the outer sleeve, the slipping during rotation is avoided, and the stability and accuracy of the depth adjustment operation are ensured; the outer sleeve is sleeved outside the limiting body, the structure is more compact, the length scale line is convenient for intuitive reading of the adjustment distance, and the accuracy of the depth adjustment is improved.

[0024] The beneficial effects of the present application are as follows: (1) the present application is provided with a flexible rotating shielding pipe body, when the hair follicle needs to be placed, the shielding pipe body is rotated to make the strip-shaped loading port coincide with the slot of the microneedle body, the hair with the hair follicle is conveniently and quickly put in, after the placement is completed, the shielding pipe body is rotated again to shield the slot, direct contact of the hair follicle with the external air and dust before being inserted into the scalp is avoided, the risk of oxidation damage and pollution is reduced, the activity of the hair follicle is effectively preserved, the shielding pipe body is automatically rotated through the cooperation of the transmission mechanism and the driving mechanism, the strip-shaped loading port and the slot are quickly coincided or shielded, manual separate adjustment of the shielding pipe body is not needed, the hair follicle placement process is simplified, and the single operation efficiency is improved; (2) the present application is provided with the thread cooperation of the outer thread and the inner threaded pipe, the outer sleeve is rotated to drive the inner threaded pipe to move up and down along the main rod body, then the rising height of the second sleeve in the driving mechanism is limited through the abutting rod, in combination with the linkage relationship between the second sleeve and the microneedle body, the depth of the microneedle body inserted into the scalp can be precisely controlled; (3) the present application is provided with a bottom ring installed at the bottom end of the shielding pipe body, the bottom is gradually recessed from the edge to the center, when the microneedle is inserted into the scalp, the bottom ring can stably abut against the scalp, on the one hand, the stability of the microneedle insertion is enhanced through physical support, the needle body is prevented from deviating and damaging the hair follicle, on the other hand, the bottom ring can squeeze the scalp around the implantation hole to the center when abutting, a "wrapped fixing" of the hair follicle is formed, and the hair follicle is effectively prevented from falling off with the needle when the microneedle is pulled out. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the first perspective structural view of the present application;

[0026] Figure 2 is the second perspective structural diagram of the application;

[0027] Figure 3 is the structural diagram of the application after the shielding pipe body rises;

[0028] Figure 4 is the first perspective structural diagram of the shielding mechanism of the application;

[0029] Figure 5 is the second perspective structural diagram of the shielding mechanism of the application;

[0030] Figure 6 is the structural diagram of the application when the strip-shaped loading entrance coincides with the slot;

[0031] Figure 7 is the first perspective structural diagram of the connection between the transmission mechanism and the shielding mechanism of the application;

[0032] Figure 8 is the second perspective structural diagram of the connection between the transmission mechanism and the shielding mechanism of the application;

[0033] Figure 9 is the first perspective structural diagram of the triggering mechanism of the application;

[0034] Figure 10 is the second perspective structural diagram of the triggering mechanism of the application;

[0035] Figure 11 is the third perspective structural diagram of the triggering mechanism of the application;

[0036] Figure 12 is the structural diagram of the main rod body of the application;

[0037] Figure 13 is the first perspective structural diagram of the adjusting mechanism of the application;

[0038] Figure 14 is the second perspective structural diagram of the adjusting mechanism of the application;

[0039] Figure 15 is the structural diagram of the application Figure 10 is the enlarged diagram of A in the application.

[0040] Reference numerals: 1. Main rod body; 2. Limiting body; 3. Microneedle body; 4. Blocking mechanism; 401. Blocking tube body; 402. Strip-shaped inlet; 403. Connecting seat; 5. Transmission mechanism; 501. Collar; 502. First sleeve; 503. Limiting post; 504. Connecting rod; 6. Triggering mechanism; 601. Second sleeve; 602. First spring; 603. Spacer ring; 604. Arc-shaped groove; 605. Straight groove; 606. Guide part Components; 6061, guide block; 6062, beveled surface; 6063, clearance groove; 607, connecting component; 6071, slide groove; 6072, slider; 6073, second spring; 7, adjusting mechanism; 701, internally threaded tube; 702, outer sleeve; 703, external thread; 704, stop rod; 705, length scale line; 8, slot; 9, fixed seat; 10, limiting ring; 11, steel ball roller; 12, bottom ring; 13, arc-shaped notch. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] like Figures 1-8 As shown, this embodiment of a dense microneedle for autologous hair transplantation includes a main shaft 1, a limiting body 2 installed at the top of the main shaft 1, and a microneedle body 3 installed at the bottom of the main shaft 1. The bottom outer side of the microneedle body 3 has a groove 8 for placing hair follicles. A fixing seat 9 is installed at the center of the top of the limiting body 2. The entire dense microneedle can be fixedly installed onto a designated instrument for hair transplantation surgery via the fixing seat 9. A blocking mechanism 4 for blocking the groove 8 is provided on the outer side of the microneedle body 3. The blocking mechanism 4 includes a blocking tube 401 sleeved on the outer side of the microneedle body 3. The bottom of the outer side of the shielding tube 401 is provided with a strip-shaped inlet 402 that cooperates with the slot 8. The top of the shielding tube 401 is equipped with a connecting seat 403. Initially, the shielding tube 401, which is fitted on the outside of the microneedle 3, has its strip-shaped inlet 402 overlapping with the slot 8 of the microneedle 3, which allows hair follicles to be quickly inserted. Subsequently, the shielding tube 401 is rotated by the transmission mechanism, which can make the strip-shaped inlet 402 staggered from the slot 8, so that the shielding tube 401 covers the slot 8, realizing the rapid placement of hair follicles. At the same time, it can prevent hair follicles from contacting the outside world before being inserted into the scalp, reduce oxidative damage and pollution, and preserve the activity of hair follicles.

[0043] like Figures 4-6As shown, in this embodiment, a bottom ring 12 is installed at the bottom of the outer side of the shielding tube 401. The bottom of the bottom ring 12 gradually concaves from the edge to the center. An arc-shaped notch 13 is provided at the part of the bottom ring 12 near the strip-shaped inlet 402. The arc-shaped notch 13 is used to provide clearance space for the hair follicle to enter the microneedle 3 through the strip-shaped inlet 402. When the microneedle 3 is inserted into the scalp, the bottom ring 12 (the bottom edge is concave towards the center) at the bottom of the shielding tube 401 presses against the scalp, squeezing the scalp around the implantation hole towards the center. The arc-shaped notch 13 on the bottom ring 12 provides space for the hair follicle to be placed. The bottom ring 12 enhances the stability of the microneedle 3 insertion, prevents the needle from deviating and damaging the hair follicle, and forms a "wrap-like fixation" for the hair follicle by squeezing the scalp, preventing the hair follicle from falling out with the needle when the microneedle is pulled out, thus improving the implantation success rate.

[0044] like Figures 7-12 and Figure 15As shown, in this embodiment, a triggering mechanism 6 is provided at the bottom of the outer side of the main rod 1. The outer side of the triggering mechanism 6 is connected to the blocking mechanism 4 via a transmission mechanism 5. The transmission mechanism 5 includes a collar 501 sleeved on the bottom of the outer side of the main rod 1. A first sleeve 502 is installed on the outer side of the collar 501. Limiting posts 503 are symmetrically installed on the top of the outer side of the first sleeve 502, and the ends of the two sets of limiting posts 503 extend into the interior of the first sleeve 502. Three sets of connecting rods 504 integrally formed with the connecting seat 403 are installed at equal intervals along the circumference at the bottom of the collar 501. The triggering mechanism 6 includes a second sleeve 601 sleeved in the middle part of the outer side of the main rod 1. A first spring 602 and a spacer ring are respectively sleeved from top to bottom on the bottom of the outer side of the main rod 1. 603, and the top and bottom ends of the first spring 602 are fixedly connected to the second sleeve 601 and the spacer ring 603 respectively. The outer side of the second sleeve 601 is provided with two sets of arc-shaped grooves 604 and two sets of straight grooves 605 that cooperate with the inner end of the limiting post 503. The two sets of arc-shaped grooves 604 are centrally symmetrically distributed on the outer side of the second sleeve 601, and the two sets of straight grooves 605 are axially symmetrically distributed on the outer side of the second sleeve 601. The ends of the two sets of arc-shaped grooves 604 that are close to each other are connected through the straight grooves 605. The top end of the outer side of the second sleeve 601 is symmetrically provided with guide members 606 that cooperate with the outer end of the limiting post 503. The second sleeve 601 is movably connected to the outer side of the main rod body 1 through the connecting member 607. The guide member 606 includes a straight groove located at the top end of the second sleeve 601. The guide block 6061 is located directly above 605. The bottom of the guide block 6061 has a beveled surface 6062 that mates with the outer end of the limiting post 503. A clearance groove 6063, adapted to the first sleeve 502, is provided on the side of the bottom of the guide block 6061 near the second sleeve 601. The connecting component 607 includes a sliding groove 6071, with two sets of sliding grooves 6071 symmetrically distributed in the middle of the outer side of the main rod body 1. Each set of sliding grooves 6071 contains a slider 6072 fixedly connected to the inner side of the second sleeve 601. A second spring 6073, fixedly connected to the top of the slider 6072, is installed at the inner top of the sliding groove 6071. The bottom of the spacer ring 603 is evenly provided with rolling fits that mate with the top of the collar 501. The ball bearing roller 11 is used to convert the sliding friction between the spacer ring 603 and the collar 501 into rolling friction to reduce wear. A limit ring 10 is installed at the bottom of the outer side of the main rod body 1. When the first sleeve 502 is manually pushed up, its inner limit post 503 moves along the straight groove 605, is guided by the oblique surface 6062 into the arc-shaped groove 604, and drives the second sleeve 601 to rise. When the first sleeve 502 is released, the second spring 6073 drives the second sleeve 601 to reset, and the first spring 602 drives the first sleeve 502 to reset. At the same time, the first sleeve 502 rotates, which drives the shielding tube body 401 to rotate through the collar 501 and the connecting rod 504. The ball bearing roller 11 reduces component friction, and the limit ring 10 restricts the movement of the collar 501.The overall design achieves automatic rotation of the shielding tube 401, eliminating the need for manual adjustment and simplifying the hair follicle placement process. Spring reset enhances operational convenience, steel ball rollers reduce wear and extend device lifespan, and limit rings ensure stable operation.

[0045] like Figures 1-3 and Figures 13-14 As shown, an adjustment mechanism 7 is provided at the top of the outer side of the main rod 1 in this embodiment. The adjustment mechanism 7 includes an external thread 703 located at the top of the outer side of the main rod 1. An internal thread tube 701 is threaded through the external thread 703 at the top of the outer side of the main rod 1. An outer sleeve 702 is installed on the outer side of the internal thread tube 701. Three sets of abutments 704 for limiting the rising height of the second sleeve 601 are evenly installed at the bottom of the internal thread tube 701. The outer sleeve 702 is sleeved on the outer side of the limiting body 2. The outer side of the limiting body 2 is provided with a length scale line 705 that cooperates with the outer sleeve 702. The outer side of the outer sleeve 702 is provided with anti-slip texture. By holding the outer sleeve 702 with anti-slip texture, the internal thread tube 701 is rotated along the external thread 703 of the main rod 1, which drives the abutment 704 to move up and down. The abutment 704 limits the rising height of the second sleeve 601. The insertion depth of the microneedle 3 is calibrated in combination with the length scale line 705 of the limiting body 2.

[0046] The working principle of this embodiment is as follows: Based on the patient's scalp thickness and hair follicle length, the insertion depth of the microneedle 3 is set. Holding the outer sleeve 702, the inner threaded tube 701 is rotated along the external thread 703 on the outside of the main rod 1, causing the inner threaded tube 701 to move up and down along the main rod 1. Simultaneously, the three sets of abutments 704 at its bottom move synchronously until the distance between the abutments 704 and the top of the second sleeve 601 matches the preset depth. The movement distance of the inner threaded tube 701 is visually read through the length scale line 705 on the outside of the limiting body 2. Further rotation of the outer sleeve 702 is used to calibrate the insertion depth of the microneedle 3. Initially, the strip-shaped inlet 402 of the shielding tube 401 coincides with the slot 8 of the microneedle 3. When the hair follicle is inserted into the microneedle... After the bottom of the needle body 3 is reached, the first sleeve 502 is manually pushed upwards. The inner ends of the two sets of limiting posts 503 on the inner side of the first sleeve 502 rise within the straight groove 605. When the inner ends of the limiting posts 503 move to the top of the straight groove 605, the guide of the beveled surface 6062 forces the inner ends of the limiting posts 503 to move to the higher end of the arc-shaped groove 604. Then, the first sleeve 502 drives the second sleeve 601 to rise together through the limiting posts 503 until the abutment rod 704 abuts the top of the second sleeve 601. Then, the first sleeve 502 is released, and the elastic potential energy of the second spring 6073 pushes the slider 6072 to move the second sleeve 601 downwards until the slider 6072 moves into the groove 6071. At the very bottom, the elastic potential energy of the first spring 602 also drives the first sleeve 502 to slide downwards outside the second sleeve 601 through the spacer ring 603 and the collar 501. During this process, the inner end of the limiting post 503 slides from the high end to the low end inside the arc-shaped groove 604 (which is also the inner bottom of the straight groove 605). The first sleeve 502 rotates half a turn clockwise during the descent (that is, the central angle of the arc-shaped groove 604 is 180°, and when the limiting post 503 slides from the high end to the low end along the arc-shaped groove 604, it drives the first sleeve 502 to rotate 180° clockwise). This causes the collar 501, connecting rod 504, connecting seat 403 and shielding tube 401 to descend together and rotate half a turn clockwise. When the microneedle 3 is inserted into the scalp, the scalp exerts an upward reaction force on the bottom ring 12. The bottom ring 12 drives the shielding tube 401, connecting rod 504, and collar 501 to rise, which in turn pushes the first sleeve 502 to rise. The inner end of the limiting post 503 moves to the inner top of the straight groove 605 and enters the high end of the arc-shaped groove 604. As the operator pulls out the microneedle 3, the shielding tube 401 descends again and rotates half a turn clockwise. At this time, the strip-shaped inlet 402 overlaps with the groove 8 again, and the operator continues to put the hair follicles to be transplanted into the inner bottom of the microneedle 3.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A dense microneedle for autologous hair transplantation, comprising a main shaft (1), a limiting body (2) installed at the top end of the main shaft (1), a microneedle body (3) installed at the bottom end of the main shaft (1), a groove (8) for placing hair follicles provided at the bottom end of the outer side of the microneedle body (3), and a fixing seat (9) installed at the center position of the top end of the limiting body (2), characterized in that: The outer side of the microneedle body (3) is provided with a shielding mechanism (4) for shielding the slot (8), the bottom of the outer side of the main rod body (1) is provided with a triggering mechanism (6), the outer side of the triggering mechanism (6) is connected to the shielding mechanism (4) through a transmission mechanism (5), and the top of the outer side of the main rod body (1) is provided with an adjustment mechanism (7). The shielding mechanism (4) includes a shielding tube (401) sleeved on the outside of the microneedle body (3). The bottom of the shielding tube (401) is provided with a strip-shaped inlet (402) that cooperates with the slot (8). The top of the shielding tube (401) is equipped with a connecting seat (403). The transmission mechanism (5) includes a collar (501) sleeved on the bottom of the outer side of the main rod (1). A first sleeve (502) is installed on the outer side of the collar (501). Limiting posts (503) are symmetrically installed on the top of the outer side of the first sleeve (502). The ends of the two sets of limiting posts (503) that are close to each other extend into the interior of the first sleeve (502). Three sets of connecting rods (504) integrally formed with the connecting seat (403) are installed at equal intervals along the circumference at the bottom of the collar (501). The triggering mechanism (6) includes a second sleeve (601) sleeved on the middle part of the outer side of the main rod (1). A first spring (602) and a spacer ring (603) are respectively sleeved on the bottom of the outer side of the main rod (1) from top to bottom. The top and bottom ends of the first spring (602) are fixedly connected to the second sleeve (601) and the spacer ring (603) respectively. The outer side of the second sleeve (601) is provided with two sets of arc-shaped grooves (604) and two sets of straight grooves (605) that cooperate with the inner end of the limiting post (503). Two sets of arc-shaped grooves (604) are centrally symmetrically distributed on the outside of the second sleeve (601), and two sets of straight grooves (605) are axially symmetrically distributed on the outside of the second sleeve (601). The ends of the two sets of arc-shaped grooves (604) that are close to each other are connected through the straight grooves (605). The top of the outside of the second sleeve (601) is symmetrically provided with guide components (606) that cooperate with the outer end of the limiting post (503). The second sleeve (601) is movably connected to the outside of the main rod body (1) through the connecting component (607).

2. The encrypted microneedles for autologous hair transplantation according to claim 1, characterized in that, The guide component (606) includes a guide block (6061) located directly above the straight groove (605). The bottom of the guide block (6061) is provided with a chamfered surface (6062) that cooperates with the outer end of the limiting post (503). The bottom end of the guide block (6061) near the second sleeve (601) is provided with a relief groove (6063) that is adapted to the first sleeve (502).

3. The encrypted microneedles for autologous hair transplantation according to claim 1, characterized in that, The connecting component (607) includes a slide groove (6071), which is provided in two sets. The two sets of slide grooves (6071) are symmetrically distributed in the middle part of the outer side of the main rod body (1). The interior of each set of slide grooves (6071) is provided with a slider (6072) that is fixedly connected to the inner side of the second sleeve (601). The inner top end of the slide groove (6071) is equipped with a second spring (6073) that is fixedly connected to the top end of the slider (6072).

4. The encrypted microneedles for autologous hair transplantation according to claim 1, characterized in that, The bottom of the spacer ring (603) is uniformly provided with steel ball rollers (11) that roll in cooperation with the top of the collar (501). The steel ball rollers (11) are used to convert the sliding friction between the spacer ring (603) and the collar (501) into rolling friction to reduce wear. A limit ring (10) is installed at the bottom of the outer side of the main rod body (1).

5. The encrypted microneedles for autologous hair transplantation according to claim 1, characterized in that, A bottom ring (12) is installed at the bottom of the outer side of the shielding tube (401). The bottom of the bottom ring (12) is gradually concave from the edge to the center. An arc-shaped notch (13) is provided at the part of the bottom ring (12) near the strip-shaped inlet (402). The arc-shaped notch (13) is used to provide clearance space for hair follicles to enter the microneedle body (3) through the strip-shaped inlet (402).

6. The encrypted microneedles for autologous hair transplantation according to claim 1, characterized in that, The adjustment mechanism (7) includes an external thread (703) located at the top of the outer side of the main rod (1). An internal thread tube (701) is threaded through the external thread (703) at the top of the outer side of the main rod (1). An outer sleeve (702) is installed on the outer side of the internal thread tube (701). Three sets of abutments (704) for limiting the rising height of the second sleeve (601) are evenly installed at the bottom of the internal thread tube (701).

7. The encrypted microneedles for autologous hair transplantation according to claim 6, characterized in that, The outer sleeve (702) is fitted on the outside of the limiting body (2). The outer side of the limiting body (2) is provided with length scale lines (705) that cooperate with the outer sleeve (702). The outer side of the outer sleeve (702) is provided with anti-slip texture.

Images