Skin taking device
The skin harvesting device, which utilizes negative pressure adsorption and cutting components, solves the problem of difficult healing of large-area wounds in skin grafting surgery, achieving rapid healing and reduced pain, and simplifying the skin harvesting process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIANGBANG (SUZHOU) BIOMATERIAL TECH CO LTD
- Filing Date
- 2023-12-29
- Publication Date
- 2026-05-05
AI Technical Summary
Current skin grafting surgeries often involve large wounds at the donor site, leading to difficult healing, increased pain, and complex procedures.
The skin harvesting device, which uses negative pressure adsorption and cutting components, draws skin fragments into the sampling port through a negative pressure port and uses a cutting tool to cut and obtain the skin fragments, thus avoiding the formation of large-area wounds.
It reduces the pain experienced by patients during skin harvesting, improves wound healing speed, and simplifies the skin harvesting process.
Smart Images
Figure CN224193548U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of skin harvesting and grafting technology, and specifically relates to a skin harvesting device. Background Technology
[0002] Currently, skin grafting is a common treatment method. For patients requiring a large surgical area, the donor area may be smaller than the defect area. Therefore, skin grafting typically involves taking a whole piece of healthy skin tissue from another part of the patient's body, cutting it into fragments (microparticles), and then transplanting these fragments to the surgical site to complete the procedure.
[0003] However, the above methods involve removing a whole piece of the patient's intact skin tissue, which can lead to a large wound area at the skin graft site, making it difficult or impossible to heal (e.g., the healing time is too long). At the same time, the patient's pain will increase, and the process is complicated.
[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to provide a skin harvesting device that can directly obtain skin fragments, reduce the pain experienced by patients during the skin harvesting process, and improve the wound healing speed at the skin harvesting site.
[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:
[0007] A skin-harvesting device, comprising:
[0008] The mounting base has a working surface, a receiving groove on the working surface, and a negative pressure hole on the bottom surface of the receiving groove;
[0009] A sampling component is installed in the receiving groove and abuts against the bottom surface of the receiving groove, and covers the negative pressure hole; the sampling component is provided with a plurality of sampling holes, one end of which is connected to the negative pressure hole.
[0010] In one or more embodiments of the present invention, the sampling element includes a substrate and a plurality of micron needle-like structures, the array of micron needle-like structures being distributed on the surface of the substrate facing away from the negative pressure hole, and one end of the sampling hole being located at the top of the micron needle-like structures.
[0011] In one or more embodiments of this utility model, the spacing between the micron needle-like structures is 100μm to 2000μm, and the height of the micron needle-like structures is 100μm to 2000μm.
[0012] In one or more embodiments of this utility model, the thickness of the substrate is 500μm to 5000μm, and the sum of the thickness of the substrate and the height of the micron needle structure is less than the depth of the receiving groove.
[0013] In one or more embodiments of this utility model, the area of the projection of the sampling element onto the plane containing the bottom surface of the receiving groove is smaller than the area of the bottom surface of the receiving groove.
[0014] In one or more embodiments of this utility model, the aperture of the sampling hole is 200μm to 2000μm.
[0015] In one or more embodiments of the present invention, the skin-harvesting device further includes a cutting component.
[0016] In one or more embodiments of the present invention, the cutting component includes a cutting wire with a wire diameter of 10μm to 200μm.
[0017] In one or more embodiments of the present invention, the cutting assembly further includes a connector mounted on the mounting base. The connector includes a pressing part and a first sliding part and a second sliding part respectively connected to the pressing part. The cutting line is located in the receiving groove, and both ends of the cutting line are detachably connected to the first sliding part and the second sliding part respectively. The first sliding part and the second sliding part are slidably connected to the mounting base, and at least a portion of the pressing part is located outside the mounting base.
[0018] In one or more embodiments of the present invention, the mounting base is provided with sliding grooves in two opposite side walls of the receiving groove, the first sliding part and the second sliding part are slidably connected in one of the sliding grooves, and an elastic member is provided in the sliding groove. Along the sliding direction of the first sliding part and / or the second sliding part, the elastic member is clamped between the first sliding part and / or the second sliding part and the inner wall of the sliding groove.
[0019] Compared with existing technologies, the skin harvesting device of this invention connects to an external negative pressure source through negative pressure holes, thereby generating negative pressure in the sampling holes on the sampling piece. Under the action of negative pressure, the patient's skin is drawn into several sampling holes, and then cut with a cutting tool to remove the patient's skin fragments from the patient's skin. That is, the patient's skin fragments are obtained from several sampling holes instead of a whole piece of skin. In the process of skin harvesting, the large wound at the skin harvesting site is transformed into several small wounds, reducing the patient's pain during the skin harvesting process and improving the healing speed of the wound at the skin harvesting site. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the skin-taking device in one embodiment of the present invention;
[0022] Figure 2 This is a cross-sectional view of the skin-taking device in one embodiment of the present invention;
[0023] Figure 3 This is a schematic diagram of the mounting base in one embodiment of the present utility model;
[0024] Figure 4 This is a schematic diagram of the sampling component in another embodiment of the present invention;
[0025] Figure 5 This is a schematic diagram of the cutting component in one embodiment of the present invention;
[0026] Figure 6 This is a cross-sectional view of the skin-taking device in another embodiment of the present invention.
[0027] Explanation of key figure labels:
[0028] 1. Mounting base; 11. Working surface; 12. Receiving groove; 13. Negative pressure hole; 14. Slide groove; 2. Sampling component; 21. Substrate; 22. Micron needle-like structure; 23. Sampling hole; 3. Cutting assembly; 31. Cutting line; 32. Connector; 321. Pressing part; 322. First sliding part; 323. Second sliding part; 4. Elastic element. Detailed Implementation
[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0030] like Figures 1-3 As shown, in one embodiment of the present invention, the skin-taking device includes a mounting base 1 and a sampling component 2: the mounting base 1 has a working surface 11, a receiving groove 12 is provided on the working surface 11, and a negative pressure hole 13 is provided on the bottom surface of the receiving groove 12; the sampling component 2 is installed in the receiving groove 12 and abuts against the bottom surface of the receiving groove 12, and the sampling component 2 covers the negative pressure hole 13; a plurality of sampling holes 23 are provided through the sampling component 2, and one end of the sampling hole 23 is connected to the negative pressure hole 13.
[0031] It is understandable that the sampling element 2 covering the negative pressure hole 13 prevents the negative pressure hole 13 from directly connecting to the receiving groove 12. The negative pressure hole 13 must connect to the receiving groove 12 through the sampling hole 23. The negative pressure hole 13 can be connected to an external negative pressure source. When using the skin harvesting device, the working surface 11 is placed against the patient's skin. Since the negative pressure hole 13 is connected to the sampling hole 23, negative pressure is generated in the sampling hole 23 on the sampling element 2. Under the action of negative pressure, the patient's skin is drawn into several sampling holes 23. Then, a cutting tool is used to cut the skin fragments in the sampling holes 23, thereby removing the patient's skin fragments from the patient's skin. That is, the patient's skin fragments are obtained in several sampling holes 23, rather than a whole piece of skin. The skin harvesting device of this utility model transforms the large wound at the skin harvesting site into several small wounds during the skin harvesting process, reducing the patient's pain during the skin harvesting process and improving the wound healing speed at the skin harvesting site.
[0032] like Figure 4 As shown, in another specific embodiment, the sampling element 2 includes a substrate 21 and a plurality of micron-shaped needle structures 22. The micron-shaped needle structures 22 are arrayed on the surface of the substrate 21 facing away from the negative pressure hole 13, and one end of the sampling hole 23 is located at the top of the micron-shaped needle structures 22. The micron-shaped needle structures 22 are arrayed on the surface of the substrate 21 facing away from the negative pressure hole 13, meaning the micron-shaped needle structures 22 protrude from the surface of the substrate 21 facing the patient's skin. The patient's skin has a certain degree of softness and elasticity. The micron-shaped needle structures 22 protruding from the substrate 21 are designed to press the micron-shaped needle structures 22 as tightly as possible against the patient's skin, causing the skin to deform. Under the action of negative pressure, the patient's skin is squeezed into the sampling hole 23 as much as possible and is adsorbed by the sampling hole 23.
[0033] Furthermore, the spacing between the micron-shaped needle structures 22 is 100μm to 2000μm, and the height of the micron-shaped needle structures 22 is 100μm to 2000μm. That is, the spacing between the aforementioned micron-shaped needle structures 22 is 100μm to 2000μm. By setting such a spacing, more skin fragments can be collected as much as possible.
[0034] Furthermore, the thickness of the substrate 21 is 500 μm to 5000 μm, and the sum of the thickness of the substrate 21 and the height of the micron needle-like structure 22 is less than the depth of the receiving groove 12. This arrangement is for ease of cutting.
[0035] like Figures 1-3 In this embodiment, the area of the projection of the sampling element 2 onto the plane containing the bottom surface of the receiving groove 12 is smaller than the area of the bottom surface of the receiving groove 12. That is, there is a gap between the sampling element 2 and the side wall of the receiving groove 12.
[0036] It is understood that the sampling component 2 can be snapped or glued into the receiving groove 12. For example, when the sampling component 2 is glued to the bottom surface of the receiving groove 12, the aforementioned gap facilitates the removal of the sampling component 2 from the receiving groove 12 when it is necessary to replace or disassemble the sampling component 2 for cleaning.
[0037] The sampling well 23 has a diameter of 200μm to 2000μm. This design allows for direct cutting with the cutting device to obtain micron-sized skin fragments, simplifying the skin harvesting process and improving harvesting efficiency.
[0038] The skin harvesting device also includes a cutting wire 31, which is used to cut skin fragments within the sampling port 23 from the patient's skin. Specifically, the cutting assembly 3 includes the cutting wire 31, the diameter of which is 10 μm to 200 μm.
[0039] In the embodiment shown in Figure 5, the cutting component 3 and the mounting base 1 can be separate, that is, the cutting component 3 is an independent part. Specifically, the cutting component 3 also includes a connector 32 installed thereon. The connector 32 includes a pressing part 321 and a first sliding part 322 and a second sliding part 323 respectively connected to the pressing part 321. The two ends of the cutting wire 31 are detachably connected to the first sliding part 322 and the second sliding part 323 respectively. The user can hold the connector 32 to control the movement of the cutting wire 31 cutting the skin.
[0040] like Figure 6In another embodiment shown, the cutting assembly 3 further includes a connector 32 mounted on the mounting base 1. The connector 32 includes a pressing part 321 and a first sliding part 322 and a second sliding part 323 respectively connected to the pressing part 321. The cutting line 31 is located in the receiving groove 12, and both ends of the cutting line 31 are detachably connected to the first sliding part 322 and the second sliding part 323 respectively. The first sliding part 322 and the second sliding part 323 are slidably connected to the mounting base 1, and at least part of the pressing part 321 is located outside the mounting base 1.
[0041] With this setup, when the patient's skin is squeezed into the sampling hole 23 under negative pressure and is attracted by the sampling hole 23, the operator only needs to press the pressing part 321 to make the first sliding part 322 and the second sliding part 323 move the cutting line 31 and the receiving groove 12, which can achieve the function of cutting the skin.
[0042] Preferably, along the depth direction of the receiving groove 12, the cutting line 31 remains in a state of non-contact with the sample 2 during the cutting process, and the closer the cutting line 31 is to the sample 2, the better, which can reduce the wound area.
[0043] Furthermore, the mounting base 1 has sliding grooves 14 on its two opposite side walls located in the receiving groove 12. The first sliding part 322 and the second sliding part 323 are slidably connected within one sliding groove 14. An elastic member 4 is provided within the sliding groove 14. Along the sliding direction of the first sliding part 322 and / or the second sliding part 323, the elastic member 4 is clamped between the first sliding part 322 and / or the second sliding part 323 and the inner wall of the sliding groove 14. The elastic member 4 serves to drive the first sliding part 322 and the second sliding part 323 outward from the sliding groove 14. Additionally, one end of the elastic member 4 can be adhered to the inner wall of the sliding groove 14, and the other end can be adhered to the first sliding part 322 or the second sliding part 323.
[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A skin-harvesting device, characterized in that, include: The mounting base has a working surface, a receiving groove on the working surface, and a negative pressure hole on the bottom surface of the receiving groove; A sampling component is installed in the receiving groove and abuts against the bottom surface of the receiving groove, and covers the negative pressure hole; the sampling component is provided with a plurality of sampling holes, one end of which is connected to the negative pressure hole.
2. The skin-harvesting device according to claim 1, characterized in that, The sampling device includes a substrate and a number of micron needle-like structures. The array of micron needle-like structures is distributed on the surface of the substrate away from the negative pressure hole, and one end of the sampling hole is located at the top of the micron needle-like structures.
3. The skin-harvesting device according to claim 2, characterized in that, The spacing between the micron needle-like structures is 100μm to 2000μm, and the height of the micron needle-like structures is 100μm to 2000μm.
4. The skin-harvesting device according to claim 3, characterized in that, The thickness of the substrate is 500μm to 5000μm, and the sum of the thickness of the substrate and the height of the micron needle-like structure is less than the depth of the receiving groove.
5. The skin-harvesting device according to claim 1, characterized in that, The area of the sampled part projected onto the plane containing the bottom surface of the receiving tank is smaller than the area of the bottom surface of the receiving tank.
6. The skin-harvesting device according to claim 1, characterized in that, The diameter of the sampling well is 200μm to 2000μm.
7. The skin-harvesting device according to claim 1, characterized in that, The skin-harvesting device also includes a cutting component.
8. The skin-harvesting device according to claim 7, characterized in that, The cutting assembly includes a cutting wire with a diameter of 10μm to 200μm.
9. The skin-harvesting device according to claim 8, characterized in that, The cutting assembly further includes a connector mounted on the mounting base. The connector includes a pressing part and a first sliding part and a second sliding part respectively connected to the pressing part. The cutting line is located in the receiving groove, and both ends of the cutting line are detachably connected to the first sliding part and the second sliding part respectively. The first sliding part and the second sliding part are slidably connected to the mounting base, and at least a portion of the pressing part is located outside the mounting base.
10. The skin-harvesting device according to claim 9, characterized in that, The mounting base has sliding grooves in the two opposite side walls of the receiving groove. The first sliding part and the second sliding part are slidably connected in one of the sliding grooves. An elastic element is provided in the sliding groove. Along the sliding direction of the first sliding part and / or the second sliding part, the elastic element is clamped between the first sliding part and / or the second sliding part and the inner wall of the sliding groove.