Hair follicle extraction needle, mechanism and equipment
By designing a hair follicle extraction needle including a hollow needle and a dynamically sealed connection with a hollow shaft, combined with the use of motor drive and robotic arms, the problem that existing hair follicle extraction needles are easily damaged to hair follicles and skin during the extraction process is achieved, A more efficient and accurate hair follicle extraction process is achieved.
Patent Information
- Application Number
- CN202420616116.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The design of existing hair follicle extraction needles leads to easily cause damage to hair follicles and skin during the extraction process, and the operation is difficult and the depth is different.
Design a hair follicle extraction needle including a hollow needle and a dynamically sealed connection with a hollow shaft. The front end of the needle is set as a blunt needle or a serrated needle. It has a hollow structure and a threaded fastening device inside. It combines the motor drive and the use of a robotic arm to realize the needle's High speed rotation and precise control.
Through hollow needle structure design and the use of dynamic sealing devices, trauma and bleeding during hair follicle extraction are reduced, extraction accuracy and efficiency are improved, and the risk of damage to the skin is reduced.
Smart Images
Figure CN222466969U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hair follicle extraction, in particular to a hair follicle extraction needle, a mechanism and equipment. Background Art
[0002] The end of the hair follicle extraction needle is often sharp, which can easily damage the hair follicles during the extraction process. In addition, manual operation can easily cause uneven depths of the holes. Specifically, a manual or electrician punching device with a diameter of 1 mm or less is used to cut into the skin along the direction of hair growth, and a small piece of tissue containing the hair follicles is cut out by rotation, so that the extracted hair follicles can be implanted in the hair loss area later.
[0003] The hair follicle extraction needle is installed on the puncher, and the hair follicle extraction needle directly contacts the patient's skin, which determines the degree of skin damage during the hair follicle extraction process. In the related art, the cross-sectional structure design of the hair follicle extraction needle is unreasonable, resulting in greater skin damage to the patient during the operation. Utility Model Content
[0004] Purpose of the utility model: In view of the above shortcomings, the utility model provides a hair follicle extraction needle, and proposes a hair follicle extraction mechanism and hair follicle extraction equipment based on the hair follicle extraction needle to solve the above problems existing in the prior art.
[0005] Technical solution: The first aspect of the utility model proposes a hair follicle extraction needle, which includes a hollow needle head, which is assembled and fastened by a mounting and positioning seat. The mounting and positioning seat is fixed with a dynamically sealed hollow shaft rod at one end away from the extraction needle head; the inner side of the dynamically sealed hollow shaft rod and the end away from the needle head are fixedly connected with a threaded fastening device; the inside of the hair follicle extraction needle body facing the needle head is provided with a conical mounting seat for threaded connection with the threaded fastening device; the diameter of the threaded fastening device is larger than the needle tail diameter of the hair follicle extraction needle; there are hollow holes with gradually changing diameter steps from the needle head to the needle tail.
[0006] In a further embodiment of the first aspect, an annular extraction portion is formed on the outside of one end of the needle; and the outer diameter of the front section of the needle is smaller than the outer diameter of the rear section.
[0007] In a further embodiment of the first aspect, the edge of the annular extraction portion is passivated to form a blunt needle. Alternatively, the circumferential array of the annular extraction portion has serrations to form a toothed ring. Using extraction needles of different diameters in different hair follicle density areas is also beneficial to reducing hair follicle trauma, and in order to improve the wound and reduce bleeding problems, the front end of the hair follicle extraction needle is set to be flat or smooth, rather than sharp.
[0008] In a further embodiment of the first aspect, a plurality of laser scale lines arranged at intervals are provided in the axial direction of the needle tube of the hair follicle extraction needle for marking and image recognition of the drilling depth, thereby facilitating the operator or the machine to intuitively see whether the current drilling depth has reached the target depth, so that the extraction needle can be withdrawn from the skin at the appropriate time.
[0009] The second aspect of the utility model provides a hair follicle extraction mechanism, which includes the hair follicle extraction needle as described in the first aspect; and also includes a driving unit connected to the hair follicle extraction needle; the hair follicle extraction needle is rotated by the driving unit to drive the needle head to rotate.
[0010] In a further embodiment of the second aspect, one end of the dynamic seal-connected hollow shaft is connected to the front end of the tracheal sealing device, and the rear end hose of the tracheal sealing device is connected to a vacuum pump. The vacuum pump extracts waste liquid near the needle, which passes through the hollow extraction needle, the dynamic sealing device and the trachea connected thereto. Since the needle rotates at a high speed, the trachea cannot be directly connected and move with it. This dynamic sealing device can ensure that the hair follicle extraction needle end rotates without affecting the air pressure.
[0011] In a further embodiment of the second aspect, the driving unit includes a motor base, a frameless motor is mounted on the motor base, and the frameless motor is connected to a motor encoder; the output shaft of the frameless motor is axially connected to the hair follicle extraction needle.
[0012] The third aspect of the utility model provides a hair follicle extraction device, which includes the hair follicle extraction mechanism as described in the second aspect, and also includes a robotic arm, wherein the end effector of the robotic arm is connected to the hair follicle extraction mechanism to achieve the extraction of hair follicles in a predetermined spatial position.
[0013] Beneficial effects: The utility model adopts the hollow needle structure design, so that the front end of the device has a skin-breaking structure, which is convenient for puncture and convenient for medical staff to remove hair follicle tissue. The inside of the needle has a hollow structure and is equipped with a dynamic sealing device, which can extract tissue waste liquid and excess blood after skin breaking, and improves the flexibility of the puncture mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the hair follicle extraction needle.
[0015] Figure 2 It is a schematic diagram of the structure when the needle tip is a blunt needle.
[0016] Figure 3 It is a schematic diagram of the structure in which the needle tip is a serrated needle.
[0017] Figure 4 It is a cross-sectional view of a serrated needle.
[0018] Figure 5 The present invention is a schematic diagram of the installation position and use of the trachea sealing device in the hair follicle extraction needle.
[0019] The reference numerals in the figure are: hair follicle extraction needle 1, needle head 101, blunt needle 101a, serrated needle 101b, laser scale line 102, inner hole step surface 103, incomplete circle disassembly surface 104, conical mounting seat 105, threaded fastening device 106, dynamically sealed hollow shaft 107, gear shaft 2, motor seat 3, deep groove ball bearing 4, frameless motor 5, tracheal sealing device 6, bearing seat 7, motor encoder 8. DETAILED DESCRIPTION
[0020] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.
[0021] The follicular unit extraction method is a minimally invasive hair transplantation method that uses direct dissection to extract FU. Hair grows naturally in bundles, each bundle containing up to 5 hairs. Therefore, a group of follicles containing 1 to 5 hairs is called a follicular unit (FU). FUs are extracted individually as complete anatomical units, using tiny, specially designed extraction needles to extract individual FUs from the edge of the hair. Generally, a hollow needle is inserted into the hair root, tilted and applied in the direction of hair growth. By manually rotating it back and forth, the sharp extraction needle penetrates the epidermis and reaches the shallow or middle layers of the subcutaneous tissue. Finally, fine extraction forceps are used to pull out the hair follicles that are still in the skin.
[0022] The hair follicle extraction needle 1 currently on the market may lead to poor extraction effect and scalp scars due to improper surface structure and artificial extraction method, such as hole turning depth and difficulty in drilling.
[0023] In order to smoothly solve the above problems, the utility model proposes a hair follicle extraction needle 1. Through the hollow needle structure design, the front end of the device has a skin-breaking structure (Scheme 1: blunt needle 101a, Scheme 2: serrated needle 101b) to facilitate puncture and facilitate medical staff to remove hair follicle tissue. The inside of the needle has a hollow structure and is equipped with a dynamic sealing device to extract tissue waste fluid and excess blood after skin breaking. The flexibility of the puncture mechanism is improved.
[0024] The details of the hair follicle extraction needle 1 proposed by the present invention are further disclosed below in conjunction with the accompanying drawings.
[0025] See Figure 1As shown, the end of the extraction needle 101 away from the needle port is integrally formed with a cylindrical end mounting and positioning seat, and the mounting and positioning seat includes an inner hole step surface 103, an incomplete circle disassembly surface 104, and a conical mounting seat 105. A toothed ring is formed on the outside of one end of the extraction needle 101, and the end of the cylindrical end away from the extraction needle 101 is fixedly dynamically sealed and connected to a hollow shaft rod 107; the end of the dynamically sealed hollow shaft rod 107 away from the extraction needle 101 is fixedly connected to a threaded fastening device 106; the inside of the end of the extraction pen body facing the extraction needle 101 is provided with a cone positioning seat for threaded connection with the threaded fastening device 106, and the diameter of the threaded joint is larger than the diameter of the extraction needle tail. There are hollow holes with stepwise diameter changes from the needle 101 to the needle tail. The utility model is conducive to realizing a hair follicle extraction needle 1 that reduces trauma, and the needle 101 can be easily installed and removed. Using extraction needles 101 with different diameters in different hair follicle density areas is also conducive to reducing hair follicle trauma. In order to improve the wound and reduce bleeding problems, the front end of the hair follicle extraction needle 1 is set to be flat or smooth rather than sharp.
[0026] The edge of the annular extraction portion is passivated to form a blunt needle 101a (see Figure 2 Alternatively, the circumferential array of the annular extraction portion has serrations to form a toothed ring (see Figure 3 and Figure 4 ). Using extraction needles 101 of different diameters in different hair follicle density areas is also beneficial to reducing hair follicle trauma. In order to improve the wound and reduce bleeding, the front end of the hair follicle extraction needle 1 is set to be flat or smooth, rather than sharp.
[0027] See Figure 4 The hair follicle extraction needle 1 is driven to rotate by a micromotor to drive the extraction needle 101 to rotate and combine with the spatial posture of the robot arm to extract the hair follicles.
[0028] The front end of the dynamic sealing device is connected to the hollow extraction needle device, and the rear hose is connected to the vacuum pump to extract the waste liquid near the needle 101, which will pass through the hollow extraction needle, the dynamic sealing device and the trachea connected thereto. Since the needle 101 rotates at a high speed, the trachea cannot be directly connected and move with it. This dynamic sealing device can ensure that the hair follicle extraction needle 1 end rotates without affecting the air pressure.
[0029] The outer diameter of the front section of the hair follicle extraction needle 1 is smaller than that of the rear section. The size of the extraction wound on the patient is determined by the outer diameter of the terminal end. Since the motor-driven rotating extraction needle rotates at high speed, it is not easy to cause damage to the skin, which can reduce the risk of skin damage during the hair follicle extraction process and cause less damage to the skin.
[0030] The hair follicle extraction needle 1 of this embodiment may be provided with a plurality of laser scale lines 102 arranged at intervals in the axial direction of the needle tube for marking and image recognition of the drilling depth, thereby facilitating the operator or the machine to intuitively see whether the current drilling depth has reached the target depth, so that the extraction needle can be withdrawn from the skin at an appropriate time.
[0031] Figure 5 The installation position and use schematic diagram of the tracheal sealing device 6 in the hair follicle extraction needle 1 are shown. The hair follicle extraction needle 1 is connected to the driving unit; the driving unit is rotated to drive the needle 101 to rotate. The driving unit includes a gear shaft 2, a motor seat 3, a deep groove ball bearing 4, a frameless motor 5, a bearing seat 7, and a motor encoder 8. The frameless motor 5 is installed on the motor seat 3. The gear shaft 2 is sleeved on the hair follicle extraction needle 1. The output shaft of the frameless motor 5 is axially connected to the hair follicle extraction needle 1.
[0032] The follicle extraction needle 1 disclosed in the utility model can be used in the minimally invasive hair transplantation FUE method. The FUE method is the follicular unit extraction method, which is a minimally invasive hair transplantation method that uses a direct dissection method to extract FU. Hair grows naturally in bundles, and each bundle contains a maximum of 5 hairs. Therefore, a group of hair follicles containing 1 to 5 hairs is called a follicular unit (FU).
[0033] In the FUE method, FUs are extracted individually as complete anatomical units. The basic steps are as follows:
[0034] In the first step, a single FU is extracted from the edge of the hair using a tiny, specially designed extraction needle. The hollow needle is inserted into the hair root, tilted and applied in the direction of hair growth. By manually rotating it back and forth, the sharp extraction needle penetrates the epidermis and reaches the superficial or middle layers of the subcutaneous tissue.
[0035] In the second step, fine extraction forceps are used to extract the FUs while they are still in the skin. They are stored in a cold, sterile saline solution until they are implanted in the recipient site. The extraction process is minimally invasive and heals naturally within a few days, leaving almost no scars. This method allows the extraction of a single FU intact, and usually leaves no noticeable scars.
[0036] When used correctly, this method causes only minimal scalp trauma. Therefore, there is neither hair thinning due to stress alopecia nor miniaturization of native hair. In particular, this minimally invasive extraction technique combined with the precise amount of grafts extracted allows this minimally invasive procedure to be repeated at appropriate intervals, which may be necessary for patients with progressive AGA.
[0037] If the hair structure allows, FU can also be obtained from areas such as the chest, legs and armpits as donor hair, which is very beneficial for patients with limited head hair. As mentioned above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes in form and details can be made without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims
1. A hair follicle extraction needle, characterized in that: include: A hollow needle; the needle is assembled and fastened by installing a positioning seat; A dynamically sealed hollow shaft is fixed to the end of the mounting and positioning seat away from the needle; The dynamic seal is connected to the inner side of the hollow shaft, and one end facing away from the needle is fixedly connected with a threaded fastening device; A conical mounting seat for threaded connection with the threaded fastening device is provided inside the hair follicle extraction needle body at one end facing the needle head; the diameter of the threaded fastening device is larger than the needle tail diameter of the hair follicle extraction needle; There are hollow holes with gradually changing diameters from the needle head to the needle tail.
2. A hair follicle extraction needle according to claim 1, characterized in that: An annular extraction portion is formed on the outside of one end of the needle; and the outer diameter of the front section of the needle is smaller than the outer diameter of the rear section.
3. A hair follicle extraction needle according to claim 2, characterized in that: The edge of the annular extraction portion is passivated to form a blunt needle.
4. A hair follicle extraction needle according to claim 2, characterized in that: The circumferential array of the annular extraction portion has saw teeth to form a toothed ring.
5. The hair follicle extraction needle according to claim 2, characterized in that: A plurality of laser scale lines arranged at intervals are arranged in the axial direction of the needle tube of the hair follicle extraction needle.
6. A hair follicle extraction mechanism, characterized in that: It comprises a hair follicle extraction needle as claimed in any one of claims 1 to 5; and further comprises a driving unit connected to the hair follicle extraction needle; The hair follicle extraction needle is rotated by the driving unit to drive the needle head to rotate.
7. The hair follicle extraction mechanism according to claim 6, characterized in that: One end of the dynamic sealing connection hollow shaft is connected to the front end of the air pipe sealing device, and the rear end hose of the air pipe sealing device is connected to the vacuum pump.
8. The hair follicle extraction mechanism according to claim 6, characterized in that: The driving unit comprises a motor seat, a frameless motor is mounted on the motor seat, and the frameless motor is connected to a motor encoder; The output shaft of the frameless motor is axially connected to the hair follicle extraction needle.
9. A hair follicle extraction device, characterized in that: It comprises the hair follicle extraction mechanism as claimed in any one of claims 6 to 8, and also comprises a robotic arm, wherein the end effector of the robotic arm is connected to the hair follicle extraction mechanism to achieve the extraction of hair follicles in a predetermined spatial posture.