Skin taking needle and micro-skin taking device
By designing a skin retrieval needle and a microdermal skin retrieval device, and using barbs to cut the epidermis to obtain skin debris, the problems of difficulty in healing and increased pain in the skin retrieval in the prior art are solved, and faster healing and pain reduction are achieved.
Patent Information
- Application Number
- CN202421078815.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-05-17
AI Technical Summary
In existing skin transplant surgery, the wound area at the skin is large, which leads to difficulty in healing and increased pain, and the steps are complicated.
A skin retrieval needle and a micro-skin retrieval device are designed. The skin retrieval needle includes a needle tip and a needle rod connected in an axial direction. The outer peripheral surface of the needle tip is recessed to form a sampling groove, and the epidermis is cut by barbing to achieve the function of obtaining skin fragments.
Through this device, skin fragments can be directly obtained, reducing the pain during the patient's skin retrieval process, and improving the wound healing speed.
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Figure CN222815830U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of biomedical instruments, and in particular relates to a skin-taking needle and a micro-skin-taking device. Background Art
[0002] At present, skin transplantation is a commonly used treatment method. For patients with large wound areas, the area of the skin transplantation may be smaller than the defect area. Therefore, skin transplantation is generally to remove intact skin tissue from other parts of the patient's body, then cut it into fragments (particles) and transplant them to the wound site in a dispersed manner to complete the skin transplantation.
[0003] However, in the above method, since the intact skin tissue of the patient is removed in one piece, the wound area at the skin removal site is large, which makes it difficult to heal or difficult to heal (for example, the healing time is too long, etc.), and the patient's pain will increase, and the steps are complicated.
[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content
[0005] The purpose of the utility model is to provide a skin removal needle and a micro-skin removal device, which can directly obtain skin fragments, reduce the pain of patients during the skin removal process, and improve the wound healing speed of the patient at the skin removal site.
[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a skin sampling needle, including an axially connected needle tip and a needle rod, the outer peripheral surface of the needle tip is recessed to form a sampling groove, the surface in the sampling groove close to the tip of the needle tip is the sampling surface, and the sampling surface and the outer peripheral surface of the needle tip cooperate to form barbs.
[0007] In one or more embodiments of the present invention, the angle between the sampling surface and the axial direction of the skin sampling needle is 30° to 90°.
[0008] In one or more embodiments of the present invention, a plurality of first protrusions are provided on the sampling surface.
[0009] In one or more embodiments of the present invention, a plurality of first recessed portions are provided on the sampling surface.
[0010] In one or more embodiments of the present invention, the surface of the sampling slot away from the tip of the needle tip is a matching surface, and a plurality of second protrusions are provided on the matching surface.
[0011] In one or more embodiments of the present invention, the surface of the sampling slot away from the tip of the needle tip is a matching surface, and a plurality of second recessed portions are provided on the matching surface.
[0012] In one or more embodiments of the present invention, along the radial direction of the skin retrieval needle, the sampling groove includes a first accommodating space and a second accommodating space that are connected; along the radial direction of the skin retrieval needle, the size of the first accommodating space gradually decreases, and the size of the second accommodating space gradually increases.
[0013] In one or more embodiments of the present invention, the depth of the sampling groove is 200-300 μm.
[0014] A specific embodiment of the utility model further provides a micro-skin removal device, comprising:
[0015] Pedestal;
[0016] A plurality of skin removal needles as described above are detachably mounted on the base.
[0017] In one or more embodiments of the present invention, a mounting hole is provided on the base, and the needle rod of the skin removal needle is interference fit with the mounting hole.
[0018] Compared with the prior art, during the skin removal process of the skin removal needle of the utility model, the tip of the skin removal needle pierces the skin until the barbs on the outer wall of the skin removal needle completely enter the surface layer of the skin, and part of the epidermis is located in the sampling groove. When the skin removal needle is pulled out, the barbs cut the epidermis, and at least part of the skin fragments located in the sampling groove are taken out, thereby realizing the function of obtaining skin fragments. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 It is a schematic diagram of a skin removal needle in one embodiment of the utility model;
[0021] Figure 2 It is a cross-sectional view of a micro-skin removal device in one embodiment of the utility model;
[0022] Figure 3 This is a working principle diagram of a skin removal needle in one embodiment of the utility model;
[0023] Figure 4 It is a partial schematic diagram of a skin removal needle in one embodiment of the utility model;
[0024] Figure 5 It is a partial schematic diagram of a skin removal needle in one embodiment of the utility model;
[0025] Figure 6 It is a partial schematic diagram of a skin removal needle in one embodiment of the utility model;
[0026] Figure 7 It is a partial schematic diagram of a skin removal needle in one embodiment of the utility model;
[0027] Figure 8 It is a partial schematic diagram of a skin removal needle in one embodiment of the utility model;
[0028] Fig. 9 It is a partial schematic diagram of a skin removal needle in one embodiment of the utility model.
[0029] Description of main reference numerals:
[0030] 1. Skin sampling needle; 11. Needle tip; 12. Needle rod; 13. Sampling slot; 131. First accommodating space; 132. Second accommodating space; 133. Sampling surface; 134. Matching surface; 135. First raised portion; 136. First recessed portion; 137. Second raised portion; 138. Second recessed portion; 14. Barb; 2. Base; 21. Mounting portion. DETAILED DESCRIPTION
[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
[0032] Example 1
[0033] like Figure 1 and Figure 2 As shown, the micro-skin removal device in one embodiment of the utility model includes a base 2 and a skin removal needle 1 detachably connected to the base 2, the skin removal needle 1 includes an axially connected needle tip 11 and a needle rod 12, the outer peripheral surface of the needle tip 11 is recessed to form a sampling groove 13, the surface of the sampling groove 13 close to the tip of the needle tip 11 is a sampling surface 133, and the sampling surface 133 and the outer peripheral surface of the needle tip 11 cooperate to form a barb 14.
[0034] Specifically, the angle between the sampling surface 133 and the axial direction of the skin needle 1 is 30° to 90°. In this embodiment, the angle between the sampling surface 133 and the axial direction of the skin needle 1 is 45°, which is convenient for the barbs 14 to cut the skin.
[0035] Specifically, the diameter of the needle shaft 12 can be about 2 mm, which is common. That is, the skin needle 1 can be directly processed from a needle with a diameter of 2 mm, and the processing process can be to directly open the sampling groove 13 on the needle tip 11, so as to facilitate the processing and production of the skin needle 1.
[0036] The depth of the sampling groove 13 is 200-300 μm. In this embodiment, the depth of the sampling groove 13 is 250 μm, and more micro-skins can be cut in combination with the barbs 14.
[0037] like Figure 2 As shown, a mounting hole 21 is provided on the base 2, and the needle rod 12 of the skin removal needle 1 is interference fit with the mounting hole 21, and the needle rod 12 is interference fit with the mounting hole 21, thereby realizing a detachable connection between the base 2 and the skin removal needle 1.
[0038] The following is a detailed description of the micro-skin removal process of the micro-skin removal device of the utility model:
[0039] like Figure 3 As shown, the tip of the needle tip 11 of the skin retrieval needle 1 is aligned with the skin and pierced into the skin until the barbs 14 on the needle tip 11 completely enter the surface layer of the skin and part of the epidermis is located in the sampling groove 13. The skin retrieval needle 1 is then pulled out, and the barbs 14 will cut the epidermis, bringing out at least part of the skin fragments (micro-skin) located in the sampling groove 13. The skin retrieval needle 1 is then removed from the base 2, and the tip of the needle tip 11 of the skin retrieval needle 1 is aligned with the upper surface of the carrier film and pierced into the carrier film until the needle shaft 12 of the skin retrieval needle 1 completely passes through the lower surface of the carrier film. At this time, the skin fragments (micro-skin) will be retained on the upper surface of the carrier film, and the skin retrieval needle 1 is then reinstalled on the base 2.
[0040] Example 2
[0041] like Figure 5 As shown, the micro-skin removal device in one embodiment of the utility model includes a base 2 and a skin removal needle 1 detachably connected to the base 2, the skin removal needle 1 includes an axially connected needle tip 11 and a needle rod 12, the outer peripheral surface of the needle tip 11 is recessed to form a sampling groove 13, the surface of the sampling groove 13 close to the tip of the needle tip 11 is a sampling surface 133, and the sampling surface 133 and the outer peripheral surface of the needle tip 11 cooperate to form a barb 14.
[0042] In this embodiment, along the radial direction of the skin needle 1, the sampling groove 13 includes a first accommodating space 131 and a second accommodating space 132 that are connected; along the radial direction of the skin needle 1, the size of the first accommodating space 131 gradually decreases, and the size of the second accommodating space 132 gradually increases.
[0043] It is understandable that the cooperation between the first accommodating space 131 and the second accommodating space 132 can play the role of clamping the skin, thereby facilitating the sampling slot 13 to obtain micro-skins.
[0044] Specifically, the diameter of the needle shaft 12 can be about 2 mm, which is common. That is, the skin needle 1 can be directly processed from a needle with a diameter of 2 mm, and the processing process can be to directly open the sampling groove 13 on the needle tip 11, so as to facilitate the processing and production of the skin needle 1.
[0045] The depth of the sampling groove 13 is 200-300 μm. In this embodiment, the depth of the sampling groove 13 is 250 μm, and more micro-skins can be cut in combination with the barbs 14.
[0046] The base 2 is provided with a mounting hole 21 , and the needle rod 12 of the skin removal needle 1 is interference fit with the mounting hole 21 , and the needle rod 12 is interference fit with the mounting hole 21 , thereby realizing a detachable connection between the base 2 and the skin removal needle 1 .
[0047] The following is a detailed description of the micro-skin removal process of the micro-skin removal device of the utility model:
[0048] Aim the tip of the needle tip 11 of the skin retrieval needle 1 at the skin and pierce the skin until the barbs 14 on the needle tip 11 completely enter the surface layer of the skin and part of the epidermis is located in the sampling groove 13, then pull out the skin retrieval needle 1, the barbs 14 will cut the epidermis, and bring out at least part of the skin fragments (micro-skin) located in the sampling groove 13, then remove the skin retrieval needle 1 from the base 2, aim the tip of the needle tip 11 of the skin retrieval needle 1 at the upper surface of the carrier film, and pierce the carrier film until the needle shaft 12 of the skin retrieval needle 1 completely passes through the lower surface of the carrier film, at this time, the skin fragments (micro-skin) will be retained on the upper surface of the carrier film, and then reinstall the skin retrieval needle 1 on the base 2.
[0049] Example 3
[0050] like Figure 6 As shown, the micro-skin removal device in one embodiment of the utility model includes a base 2 and a skin removal needle 1 detachably connected to the base 2, the skin removal needle 1 includes an axially connected needle tip 11 and a needle rod 12, the outer peripheral surface of the needle tip 11 is recessed to form a sampling groove 13, the surface of the sampling groove 13 close to the tip of the needle tip 11 is a sampling surface 133, and the sampling surface 133 and the outer peripheral surface of the needle tip 11 cooperate to form a barb 14.
[0051] Furthermore, a plurality of first protrusions 135 are provided on the sampling surface 133 , and the plurality of first protrusions 135 can increase the friction between the skin and the sampling slot 13 , thereby facilitating the sampling slot 13 to acquire micro-skins.
[0052] Specifically, the diameter of the needle shaft 12 can be about 2 mm, which is common. That is, the skin needle 1 can be directly processed from a needle with a diameter of 2 mm, and the processing process can be to directly open the sampling groove 13 on the needle tip 11, so as to facilitate the processing and production of the skin needle 1.
[0053] The depth of the sampling groove 13 is 200-300 μm. In this embodiment, the depth of the sampling groove 13 is 250 μm, and more micro-skins can be cut in combination with the barbs 14.
[0054] The base 2 is provided with a mounting hole 21 , and the needle rod 12 of the skin removal needle 1 is interference fit with the mounting hole 21 , and the needle rod 12 is interference fit with the mounting hole 21 , thereby realizing a detachable connection between the base 2 and the skin removal needle 1 .
[0055] The following is a detailed description of the micro-skin removal process of the micro-skin removal device of the utility model:
[0056] Aim the tip of the needle tip 11 of the skin retrieval needle 1 at the skin and pierce the skin until the barbs 14 on the needle tip 11 completely enter the surface layer of the skin and part of the epidermis is located in the sampling groove 13. Then pull out the skin retrieval needle 1. The barbs 14 will cut the epidermis and bring out at least part of the skin fragments (micro-skin) located in the sampling groove 13. Then remove the skin retrieval needle 1 from the base 2, aim the tip of the needle tip 11 of the skin retrieval needle 1 at the upper surface of the carrier film and pierce the carrier film until the needle shaft 12 of the skin retrieval needle 1 completely passes through the lower surface of the carrier film. At this time, the skin fragments (micro-skin) will be retained on the upper surface of the carrier film, and then reinstall the skin retrieval needle 1 on the base 2.
[0057] Example 4
[0058] like Figure 7 As shown, the micro-skin removal device in one embodiment of the utility model includes a base 2 and a skin removal needle 1 detachably connected to the base 2, the skin removal needle 1 includes an axially connected needle tip 11 and a needle rod 12, the outer peripheral surface of the needle tip 11 is recessed to form a sampling groove 13, the surface of the sampling groove 13 close to the tip of the needle tip 11 is a sampling surface 133, and the sampling surface 133 and the outer peripheral surface of the needle tip 11 cooperate to form a barb 14.
[0059] Furthermore, the sampling slot 13 has a mating surface 134 away from the tip of the needle tip 11, and a plurality of second protrusions 137 are provided on the mating surface 134. The plurality of second protrusions 137 can increase the friction between the skin and the sampling slot 13, thereby facilitating the sampling slot 13 to acquire microskin.
[0060] Specifically, the diameter of the needle shaft 12 can be about 2 mm, which is common. That is, the skin needle 1 can be directly processed from a needle with a diameter of 2 mm, and the processing process can be to directly open the sampling groove 13 on the needle tip 11, so as to facilitate the processing and production of the skin needle 1.
[0061] The depth of the sampling groove 13 is 200-300 μm. In this embodiment, the depth of the sampling groove 13 is 250 μm, and more micro-skins can be cut in combination with the barbs 14.
[0062] The base 2 is provided with a mounting hole 21 , and the needle rod 12 of the skin removal needle 1 is interference fit with the mounting hole 21 , and the needle rod 12 is interference fit with the mounting hole 21 , thereby realizing a detachable connection between the base 2 and the skin removal needle 1 .
[0063] The following is a detailed description of the micro-skin removal process of the micro-skin removal device of the utility model:
[0064] Aim the tip of the needle tip 11 of the skin retrieval needle 1 at the skin and pierce the skin until the barbs 14 on the needle tip 11 completely enter the surface layer of the skin and part of the epidermis is located in the sampling groove 13, then pull out the skin retrieval needle 1, the barbs 14 will cut the epidermis, and bring out at least part of the skin fragments (micro-skin) located in the sampling groove 13, then remove the skin retrieval needle 1 from the base 2, aim the tip of the needle tip 11 of the skin retrieval needle 1 at the upper surface of the carrier film, and pierce the carrier film until the needle shaft 12 of the skin retrieval needle 1 completely passes through the lower surface of the carrier film, at this time, the skin fragments (micro-skin) will be retained on the upper surface of the carrier film, and then reinstall the skin retrieval needle 1 on the base 2.
[0065] Example 5
[0066] like Figure 8 As shown, the micro-skin removal device in one embodiment of the utility model includes a base 2 and a skin removal needle 1 detachably connected to the base 2, the skin removal needle 1 includes an axially connected needle tip 11 and a needle rod 12, the outer peripheral surface of the needle tip 11 is recessed to form a sampling groove 13, the surface of the sampling groove 13 close to the tip of the needle tip 11 is a sampling surface 133, and the sampling surface 133 and the outer peripheral surface of the needle tip 11 cooperate to form a barb 14.
[0067] Furthermore, a plurality of first recessed portions 136 are provided on the sampling surface 133. Since the first recessed portions 136 are relatively small in size, when part of the skin is located in the first recessed portions 136, the first recessed portions 136 can play a role in clamping the skin, thereby facilitating the sampling slot 13 to obtain micro-skins.
[0068] Specifically, the diameter of the needle shaft 12 can be about 2 mm, which is common. That is, the skin needle 1 can be directly processed from a needle with a diameter of 2 mm, and the processing process can be to directly open the sampling groove 13 on the needle tip 11, so as to facilitate the processing and production of the skin needle 1.
[0069] The depth of the sampling groove 13 is 200-300 μm. In this embodiment, the depth of the sampling groove 13 is 250 μm, and more micro-skins can be cut in combination with the barbs 14.
[0070] The base 2 is provided with a mounting hole 21 , and the needle rod 12 of the skin removal needle 1 is interference fit with the mounting hole 21 , and the needle rod 12 is interference fit with the mounting hole 21 , thereby realizing a detachable connection between the base 2 and the skin removal needle 1 .
[0071] The following is a detailed description of the micro-skin removal process of the micro-skin removal device of the utility model:
[0072] Aim the tip of the needle tip 11 of the skin retrieval needle 1 at the skin and pierce the skin until the barbs 14 on the needle tip 11 completely enter the surface layer of the skin and part of the epidermis is located in the sampling groove 13, then pull out the skin retrieval needle 1, the barbs 14 will cut the epidermis, and bring out at least part of the skin fragments (micro-skin) located in the sampling groove 13, then remove the skin retrieval needle 1 from the base 2, aim the tip of the needle tip 11 of the skin retrieval needle 1 at the upper surface of the carrier film, and pierce the carrier film until the needle shaft 12 of the skin retrieval needle 1 completely passes through the lower surface of the carrier film, at this time, the skin fragments (micro-skin) will be retained on the upper surface of the carrier film, and then reinstall the skin retrieval needle 1 on the base 2.
[0073] Example 6
[0074] like Fig. 9 As shown, the micro-skin removal device in one embodiment of the utility model includes a base 2 and a skin removal needle 1 detachably connected to the base 2, the skin removal needle 1 includes an axially connected needle tip 11 and a needle rod 12, the outer peripheral surface of the needle tip 11 is recessed to form a sampling groove 13, the surface of the sampling groove 13 close to the tip of the needle tip 11 is a sampling surface 133, and the sampling surface 133 and the outer peripheral surface of the needle tip 11 cooperate to form a barb 14.
[0075] Furthermore, the sampling slot 13 has a mating surface 134 away from the tip of the needle tip 11, and a plurality of second recesses 138 are provided on the mating surface 134. Since the second recesses 138 are relatively small in size, when part of the skin is located in the second recesses 138, the second recesses 138 can play a role in clamping the skin, thereby facilitating the sampling slot 13 to obtain microskin.
[0076] Specifically, the diameter of the needle shaft 12 can be about 2 mm, which is common. That is, the skin needle 1 can be directly processed from a needle with a diameter of 2 mm, and the processing process can be to directly open the sampling groove 13 on the needle tip 11, so as to facilitate the processing and production of the skin needle 1.
[0077] The depth of the sampling groove 13 is 200-300 μm. In this embodiment, the depth of the sampling groove 13 is 250 μm, and more micro-skins can be cut in combination with the barbs 14.
[0078] The base 2 is provided with a mounting hole 21 , and the needle rod 12 of the skin removal needle 1 is interference fit with the mounting hole 21 , and the needle rod 12 is interference fit with the mounting hole 21 , thereby realizing a detachable connection between the base 2 and the skin removal needle 1 .
[0079] The following is a detailed description of the micro-skin removal process of the micro-skin removal device of the utility model:
[0080] Aim the tip of the needle tip 11 of the skin retrieval needle 1 at the skin and pierce the skin until the barbs 14 on the needle tip 11 completely enter the surface layer of the skin and part of the epidermis is located in the sampling groove 13, then pull out the skin retrieval needle 1, the barbs 14 will cut the epidermis, and bring out at least part of the skin fragments (micro-skin) located in the sampling groove 13, then remove the skin retrieval needle 1 from the base 2, aim the tip of the needle tip 11 of the skin retrieval needle 1 at the upper surface of the carrier film, and pierce the carrier film until the needle shaft 12 of the skin retrieval needle 1 completely passes through the lower surface of the carrier film, at this time, the skin fragments (micro-skin) will be retained on the upper surface of the carrier film, and then reinstall the skin retrieval needle 1 on the base 2.
[0081] Example 7
[0082] like Figure 4 As shown, the micro-skin removal device in one embodiment of the utility model includes a base 2 and a skin removal needle 1 detachably connected to the base 2, the skin removal needle 1 includes an axially connected needle tip 11 and a needle rod 12, the outer peripheral surface of the needle tip 11 is recessed to form a sampling groove 13, the surface of the sampling groove 13 close to the tip of the needle tip 11 is a sampling surface 133, and the sampling surface 133 and the outer peripheral surface of the needle tip 11 cooperate to form a barb 14.
[0083] The angle between the sampling surface 133 and the axial direction of the skin needle 1 is 30° to 90°. In this embodiment, the angle between the sampling surface 133 and the axial direction of the skin needle 1 is 90°, which can take into account the amount of skin taken by the micro-skin and facilitate the barb 14 to cut the skin.
[0084] Specifically, the diameter of the needle shaft 12 can be about 2 mm, which is common. That is, the skin needle 1 can be directly processed from a needle with a diameter of 2 mm, and the processing process can be to directly open the sampling groove 13 on the needle tip 11, so as to facilitate the processing and production of the skin needle 1.
[0085] The depth of the sampling groove 13 is 200-300 μm. In this embodiment, the depth of the sampling groove 13 is 250 μm, and more micro-skins can be cut in combination with the barbs 14.
[0086] The base 2 is provided with a mounting hole 21 , and the needle rod 12 of the skin removal needle 1 is interference fit with the mounting hole 21 , and the needle rod 12 is interference fit with the mounting hole 21 , thereby realizing a detachable connection between the base 2 and the skin removal needle 1 .
[0087] The following is a detailed description of the micro-skin removal process of the micro-skin removal device of the utility model:
[0088] Aim the tip of the needle tip 11 of the skin retrieval needle 1 at the skin and pierce the skin until the barbs 14 on the needle tip 11 completely enter the surface layer of the skin and part of the epidermis is located in the sampling groove 13, then pull out the skin retrieval needle 1, the barbs 14 will cut the epidermis, and bring out at least part of the skin fragments (micro-skin) located in the sampling groove 13, then remove the skin retrieval needle 1 from the base 2, aim the tip of the needle tip 11 of the skin retrieval needle 1 at the upper surface of the carrier film, and pierce the carrier film until the needle shaft 12 of the skin retrieval needle 1 completely passes through the lower surface of the carrier film, at this time, the skin fragments (micro-skin) will be retained on the upper surface of the carrier film, and then reinstall the skin retrieval needle 1 on the base 2.
[0089] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0090] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A skin removal needle, characterized in that: It comprises a needle tip and a needle rod connected axially, the outer peripheral surface of the needle tip is concave to form a sampling groove, the surface of the sampling groove close to the tip of the needle tip is a sampling surface, and the sampling surface and the outer peripheral surface of the needle tip cooperate to form a barb; Along the radial direction of the skin retrieval needle, the sampling groove includes a first accommodating space and a second accommodating space that are connected to each other; along the radial direction of the skin retrieval needle, the size of the first accommodating space gradually decreases, and the size of the second accommodating space gradually increases.
2. The skin removal needle according to claim 1, characterized in that: The angle between the sampling surface and the axial direction of the skin sampling needle is 30° to 90°.
3. The skin removal needle according to claim 1, characterized in that: A plurality of first protrusions are arranged on the sampling surface.
4. The skin removal needle according to claim 1, characterized in that: The sampling surface is provided with a plurality of first recessed portions.
5. The skin removal needle according to claim 1, characterized in that: The surface of the sampling slot away from the tip of the needle tip is a matching surface, and a plurality of second protrusions are arranged on the matching surface.
6. The skin removal needle according to claim 1, characterized in that: The surface of the sampling slot away from the tip of the needle tip is a matching surface, and a plurality of second recessed parts are arranged on the matching surface.
7. The skin removal needle according to claim 1, characterized in that: The depth of the sampling groove is 200-300 μm.
8. A micro-skin removal device, characterized in that: include: Pedestal; A plurality of skin removal needles as described in any one of claims 1 to 7 are detachably mounted on the base.
9. The micro-skin removal device according to claim 8, characterized in that: A mounting hole is arranged on the base, and the needle rod of the skin removal needle is interference-fitted with the mounting hole.