Skin tensioning device

Abstract

The application relates to a skin tensioning device. The skin tensioning device comprises a skin tension unit and a skin gripping unit arranged on the skin tension unit, the skin tension unit has a contraction state and an opening state, the skin tension unit can be fixed on the skin through the skin gripping unit in the contraction state, and the skin tension unit can provide a pulling force to the skin gripping unit to tension the skin in the opening state. The skin tensioning device can effectively tension the scalp through cooperation of the skin tension unit and the skin gripping unit, is convenient for extraction and planting of hair follicles, can avoid injection of a large amount of expansion liquid during hair transplantation surgery, and is beneficial to recovery of a surgeon after the surgery.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a skin tensioning device. Background Technology

[0002] During hair transplant surgery, the scalp is usually in a soft state when extracting and implanting hair follicles, which makes hair extraction and implantation difficult. To address this, related techniques often involve injecting a tumescent solution into the scalp to tighten it. However, injecting too much tumescent solution can affect the patient's recovery, and insufficient scalp tightening can lead to changes in the extraction or implantation direction, hindering the extraction and implantation of hair follicles. Summary of the Invention

[0003] Therefore, it is necessary to provide a skin tensioning device to address the aforementioned technical problems.

[0004] A skin tensioning device includes a skin tension unit and a skin gripping unit disposed on the skin tension unit. The skin tension unit has a contracted state and an open state. In the contracted state, the skin tension unit can be fixed to the skin by the skin gripping unit. In the open state, the skin tension unit can provide tension to the skin gripping unit to tension the skin.

[0005] In one embodiment, the skin gripping unit includes a skin contact portion and / or a skin insertion portion, wherein the skin contact portion is capable of contacting the skin and the skin insertion portion is capable of being inserted into the skin.

[0006] In one embodiment, the skin tensioning device further includes a position recognition unit disposed on the outer wall of the skin tensioning unit away from the skin gripping unit.

[0007] In one embodiment, the skin tension unit includes at least one guide and a plurality of first tension members, the first tension members being slidably disposed on the corresponding guide, the plurality of first tension members being relatively close to or far from each other to cause the skin tension unit to contract or expand, and the skin gripping unit being disposed on the first tension members.

[0008] In one embodiment, the skin tension unit further includes at least one first elastic element disposed between two corresponding adjacent first tension elements, the first elastic element being used to provide a sliding force to the two corresponding adjacent first tension elements in a direction away from each other.

[0009] In one embodiment, the skin tension unit further includes at least one retractable thrust member disposed between two corresponding adjacent first tension members to push the two corresponding adjacent first tension members to slide in a direction toward or away from each other.

[0010] In one embodiment, the thrust member is made of a flexible material and has a closed cavity inside, which is used to introduce fluid at a preset pressure to cause the thrust member to extend.

[0011] In one embodiment, the skin tension unit further includes a plurality of second elastic elements, which are sleeved on the corresponding guide members. The plurality of second elastic elements are divided into multiple groups, and each group of second elastic elements is sleeved on the two ends of the corresponding guide member. Each group of second elastic elements is used to provide a sliding force to two adjacent first tension elements in a direction toward each other.

[0012] In one embodiment, the skin tension unit further includes at least one positioning element, which is disposed between two adjacent first tension elements to enable the two adjacent first tension elements to translate and slide.

[0013] The positioning member is provided with a positioning protrusion, and the first tension member is provided with a positioning groove; and / or, the positioning member is provided with the positioning groove, and the first tension member is provided with the positioning protrusion; the positioning protrusion is installed in the positioning groove.

[0014] In one embodiment, the skin tension unit includes a compressible second tension member having at least one deformation notch.

[0015] The second tension member is annular, or the second tension member includes a head, a waist and a tail connected in sequence, the waist is used to be clamped to deform the tail of the second tension member, the tail has a skirt structure, the deformation notches are spaced apart on the tail along the circumference of the second tension member, and the skin gripping unit is disposed on the tail of the second tension member.

[0016] In one embodiment, the second tension member includes a plurality of squeezing portions and a plurality of deforming portions, the squeezing portions and the deforming portions being alternately distributed and sequentially connected along the circumference of the skin tensioning device, and the skin gripping unit being disposed on the squeezing portions.

[0017] The aforementioned skin tensioning device can be applied in fields such as hair transplantation and burn reconstruction. During hair transplantation, the skin tension unit of the skin tensioning device can be contracted first, and the skin gripping unit of the skin tensioning device can be used to grip the scalp of the donor area on the head, thereby fixing the skin tension unit to the scalp of the donor area; then the skin tension unit is expanded to provide tension to the skin gripping unit, which then pulls the scalp of the donor area, thereby achieving tension on the scalp of the donor area.

[0018] As can be seen, the above-mentioned skin tensioning device, through the cooperation of the skin tension unit and the skin gripping unit, can effectively tighten the scalp, which facilitates the extraction and implantation of hair follicles, and can also avoid the injection of a large amount of tumescent fluid during hair transplantation surgery, which is beneficial to the patient's postoperative recovery. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the skin tensioning device provided in Embodiment 1 of this application, viewed from a first angle as being in an open state.

[0020] Figure 2 This is a schematic diagram of the skin tensioning device provided in Embodiment 1 of this application applied to the head.

[0021] Figure 3 This is a three-dimensional structural diagram of the skin tensioning device provided in Embodiment 1 of this application, viewed from a second angle as being in an open state.

[0022] Figure 4 This is a schematic diagram of the skin tensioning device and the fixing frame provided in Embodiment 1 of this application.

[0023] Figure 5 This is a schematic diagram of the force exerted on the head when the skin tensioning device provided in Embodiment 1 of this application is used in conjunction with the fixation frame.

[0024] Figure 6 This is a three-dimensional structural diagram of the skin tensioning device provided in Embodiment 2 of this application in a contracted state.

[0025] Figure 7 This is a three-dimensional structural diagram of the skin tensioning device without positioning components provided in Embodiment 2 of this application in a contracted state.

[0026] Figure 8 This is a cross-sectional schematic diagram showing the thrust member and the first and second connecting members assembled according to Embodiment 2 of this application.

[0027] Figure 9 This is a schematic diagram of the installation of the second elastic element on the guide member according to Embodiment 2 of this application.

[0028] Figure 10This is a schematic diagram of the skin tensioning device provided in Embodiment 2 of this application applied to the head.

[0029] Figure 11 This is a three-dimensional structural diagram of the positioning component provided in Embodiment 2 of this application.

[0030] Figure 12 This is a front view of the skin tensioning device provided in Embodiment 3 of this application.

[0031] Figure 13 This is a top view of the skin tensioning device provided in Embodiment 3 of this application.

[0032] Figure 14 This is a schematic diagram of the force on the skin tensioning device provided in Embodiment 3 of this application when the skin tension unit is in an open state.

[0033] Figure 15 This is a front view of the skin tensioning device provided in Embodiment 4 of this application.

[0034] Figure 16 This is a schematic diagram of the skin tensioning device provided in Embodiment 4 of this application, viewed from the reverse side.

[0035] Figure 17 This is a schematic diagram of the skin tensioning device provided in Embodiment 4 of this application used in conjunction with a clamp.

[0036] Figure 18 This is a three-dimensional structural diagram of the skin tensioning device provided in Embodiment 5 of this application.

[0037] Figure 19 This is a longitudinal cross-sectional view of the skin tensioning device provided in Embodiment 5 of this application.

[0038] Figure 20 This is a schematic diagram of the skin tensioning device provided in Embodiment 5 of this application used in conjunction with a clamp.

[0039] Figure 21 This is a front view of the skin tensioning device provided in Embodiment 6 of this application.

[0040] Figure 22 This is a schematic diagram of the skin tensioning device with a flexible tube provided in Embodiment 6 of this application, viewed from the reverse side.

[0041] Figure 23 This is a schematic diagram of the force exerted on the skin tensioning device provided in Embodiment 6 of this application after it is clamped by a clamp. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] Example 1

[0044] like Figure 1 As shown, this embodiment provides a skin tensioning device 10, which may include a skin tension unit 100 and a skin gripping unit 200 disposed on the skin tension unit 100. The skin tension unit 100 has a contracted state and an open state. In the contracted state, the skin tension unit 100 can be fixed to the skin by the skin gripping unit 200. In the open state, the skin tension unit 100 can provide a pulling force to the skin gripping unit 200 to tension the skin.

[0045] The skin tensioning device 10 described above can be applied in fields such as hair transplantation and burn reconstruction. See also... Figure 2 During hair transplantation, the skin tension unit 100 of the skin tensioning device 10 can be contracted first, and the skin gripping unit 200 of the skin tensioning device 10 can be used to grip the scalp A1 of the donor area on the head A, thereby fixing the skin tension unit 100 to the scalp A1 of the donor area; then the skin tension unit 100 is expanded to provide tension to the skin gripping unit 200, and the skin gripping unit 200 drags the scalp A1 of the donor area, thereby achieving tension on the scalp A1 of the donor area.

[0046] As can be seen, the skin tensioning device 10 provided in this embodiment can effectively tension the scalp A1 through the cooperation of the skin tension unit 100 and the skin gripping unit 200, which facilitates the extraction and implantation of hair follicles, avoids the injection of a large amount of tumescent fluid during hair transplantation surgery, and is beneficial to the postoperative recovery of the surgeon.

[0047] In this embodiment, see Figure 1 The skin gripping unit 200 may include a skin contact portion 200a, which can directly contact the skin. In this embodiment, the skin gripping unit 200 can adhere tightly to the scalp A1, and can grip the scalp A1 of the donor area in a non-invasive manner, so that the entire hair transplantation procedure is bloodless and trauma-free, which can reduce the pain of the surgeon and speed up the recovery of the surgeon.

[0048] Specifically, in this embodiment, the skin contact portion 200a can be an adhesive layer. The adhesive layer has strong adhesion and can firmly grip the scalp A1 of the donor area. This adhesive layer can be applied to the skin tension unit 100 by means of bonding or other methods.

[0049] In this embodiment, such as Figure 1 As shown, the skin tension unit 100 includes at least one guide member 110 and a plurality of first tension members 120. The first tension members 120 are slidably disposed on the corresponding guide member 110 to contract or expand themselves, and the skin gripping unit 200 is disposed on the first tension member 120. In this embodiment, the contraction or expansion of the skin tension unit 100 can be achieved by sliding the first tension member 120 on the guide member 110.

[0050] Specifically, in this embodiment, see Figure 1 The number of first tension members 120 can be two. When the two first tension members 120 slide in a direction close to each other, the skin tension unit 100 can be contracted; when the two first tension members 120 slide in a direction away from each other, the skin tension unit 100 can be expanded.

[0051] Optionally, see Figure 3 The first tensioning member 120 may include a sliding part 121 and a tensioning part 122 connected to each other. The sliding part 121 is provided with a through hole for the corresponding guide member 110 to pass through. The skin gripping unit 200 is disposed on the tensioning part 122. The tensioning part 122 may be an arc-shaped structure, so that the skin gripping unit 200 on the tensioning part 122 can better adhere to the scalp A1 of the donor area and grip the scalp A1 of the donor area more firmly.

[0052] In this embodiment, see Figure 1 The guide members 110 can be two in number, and these two guide members 110 are distributed at intervals along a preset direction, which is perpendicular to the direction from one first tension member 120 to the other. This arrangement allows the guide members 110 to cooperate with the first tension members 120 to surround the scalp A1 of the donor area without obstructing it, facilitating hair follicle extraction and implantation. Of course, in other embodiments, the number of guide members 110 can also be one, three, four, or more.

[0053] In this embodiment, see Figures 1 to 3The skin tension unit 100 also includes at least one first elastic element 131. The first elastic element 131 is sleeved on the corresponding guide 110 and located between two adjacent first tension elements 120. The first elastic element 131 is used to provide a sliding force to the two adjacent first tension elements 120 in a direction away from each other. The tensioning process of the skin tensioning device 10 is described below with the example of the skin tension unit 100 having two first tension elements 120: In use, one of the first tension elements 120 is first pressed onto the scalp A1, and then the other first tension element 120 is pressed towards the first tension element 120 to compress the first elastic element 131, while pressing it onto the scalp A1; then, the first elastic element 131 begins to reset, thereby driving the two first tension elements 120 to slide in a direction away from each other. The skin gripping units on the two first tension elements 120 drag the scalp A1 of the donor area, thereby achieving tensioning of the scalp A1 of the donor area.

[0054] Optionally, the first elastic element 131 can be a spring.

[0055] Regarding the number of the first elastic element 131, this embodiment does not impose a specific limitation, as long as it ensures that the scalp A1 can be effectively stretched. For example, Figures 1 to 4 The skin tensioning device 10 shown has two first elastic elements 131, each of which is fitted onto a corresponding guide element 110.

[0056] Further, in this embodiment, see Figure 1 The end of the guide member 110 has a reinforcing through hole 110a. See also Figure 4 When the first tensioning member 120 is pressed onto the scalp A1, the skin tensioning device 10 can also cooperate with the external fixing frame 30 via the hose 20 to effectively tension the scalp A1 in the donor area. Specifically, the hose 20 can pass through the reinforcing through hole 110a on the guide member 110 and connect to the fixing frame 30, see [link to relevant documentation]. Figure 5 The tension of the flexible tube 20 on the guide member 110 is converted into a normal force of the first tension member 120 on the scalp A1. This force ensures that the skin gripping unit 200 on the first tension member 120 only experiences shearing force and not peeling force, thus achieving effective tension on the scalp A1. The flexible tube 20 can be a silicone flexible tube, and the fixing frame 30 can be a metal fixing frame 30. It should be noted that... Figure 5 The thick straight arrow in the image represents the direction of the normal force. Figure 5 The thick curved arrow in the image represents the direction of the shear force.

[0057] In this embodiment, see Figure 3The skin tensioning device 10 also includes a position recognition unit 300, which is disposed on the outer wall of the skin tension unit 100 away from the skin gripping unit 200. The position recognition unit 300 can accurately position the skin tensioning device 10 and locate the position of the surgeon's head A, which is beneficial for hair follicle extraction and implantation.

[0058] Optionally, the position recognition unit 300 may include multiple recognition units, each of which is disposed on a sliding part 121 corresponding to the first tension member 120. The recognition unit can work with a binocular camera to locate the surgeon's head position A. Alternatively, the recognition unit may be printed with a pattern containing an identifier, such as an Aruco code. Machine vision can identify the differences in the Aruco codes on each recognition unit, thereby enabling accurate positioning of the skin tensioning device 10.

[0059] The following describes the hair follicle extraction process of hair transplant surgery using the skin tensioning device 10 as described above:

[0060] Step 1: First, select the donor area and use tools to extract hair from the donor area;

[0061] Step 2: Use a cotton swab soaked in disinfectant (such as alcohol or iodine) to disinfect the scalp A1;

[0062] Step 3: Stretch the scalp A1 in the donor area;

[0063] Step 4: Adjust the state of the skin tension unit 100 of the skin tension device 10 to the contracted state, and press the skin tension device 10 evenly on the scalp A1;

[0064] Step 5: Use the flexible tube 20 to secure the skin tensioning device 10 to the fixation frame 30;

[0065] Step 6: Inject tumescent fluid into the donor area as needed;

[0066] Step 7: After the operation, loosen the soft tube 20 and adjust the state of the skin tension unit 100 from the stretched state to the contracted state.

[0067] Step 8: Discard the used skin tensioning device 10.

[0068] Example 2

[0069] like Figure 6 and Figure 7As shown, this embodiment provides a skin tensioning device 10. Unlike the skin tensioning device 10 provided in Embodiment 1, the skin tension unit 100 in this embodiment further includes at least one retractable thrust member 140. The thrust member 140 is disposed between two corresponding adjacent first tension members 120 to push the two corresponding adjacent first tension members 120 to slide in a direction away from or towards each other. By driving the first tension members 120 to slide through the thrust member 140, the two corresponding adjacent first tension members 120 slide in a direction away from or towards each other, thereby causing the skin tension unit 100 to expand or contract.

[0070] See Figure 8 In this embodiment, the thrust member 140 is made of a flexible material and has a closed cavity 140a. The closed cavity 140a is used to introduce a fluid at a preset pressure to cause the thrust member 140 to extend and retract. By introducing a fluid (e.g., gas or liquid) at a preset pressure into the closed cavity 140a, the thrust member 140 deforms, thereby elongating. It should be noted that the length of the flexible material thrust member 140 is much greater than its width; therefore, the deformation range that can occur in the length direction of the thrust member 140 is significantly greater than the deformation range that can occur in the width direction. Optionally, the thrust member 140 can be a silicone tube.

[0071] See Figure 8 In this embodiment, the thrust member 140 is also provided with an inflation port 140b, which communicates with the closed cavity 140a. An external inflation device (e.g., an inflatable pressure ball) can inject gas at a preset pressure into the closed cavity 140a through the inflation port 140b on the thrust member 140. A valve for controlling the opening and closing of the inflation port 140b may be provided on the inflation port 140b.

[0072] Optionally, the inner wall of the enclosed cavity 140a of the thrust member 140 has an uneven structure, which facilitates the deformation of the thrust member 140 under the pressure of the gas. The thrust member 140 can be a bellows, or the inner wall of the enclosed cavity 140a can have protrusions.

[0073] Optionally, there can be multiple thrust members 140, and the closed cavities 140a on the multiple thrust members 140 are interconnected. Multiple thrust members 140 can effectively push the corresponding first tension member 120 to slide. In addition, by connecting the closed cavities 140a on the multiple thrust members 140, it is possible to ensure that the pressure of these closed cavities 140a is the same, which is conducive to the translational sliding of the corresponding first tension member 120, so that the scalp A1 in the donor area is subjected to uniform force. Moreover, it is also possible to provide only one air port 140b on one of the thrust members 140, which can simplify the structure of the skin tensioning device 10.

[0074] Regarding the specific number of thrust members 140, this embodiment does not impose a specific limitation, as long as they can effectively push the first tension member 120 to slide. For example, the number of thrust members 140 can be the same as the number of guide members 110, and each thrust member 140 is located below the corresponding guide member 110. In this embodiment, the number of guide members 110 and the first tension member 120, as well as their positional relationship, are the same as in Embodiment 1.

[0075] Optionally, such as Figure 8 As shown, in this embodiment, the skin tensioning device 10 further includes a first connecting member 161 and a second connecting member 162. The first connecting member 161 is disposed on the side wall of one of the first tension members 120, and the second connecting member 162 is disposed on the side wall of the other first tension member 120. One end of the thrust member 140 is connected to the first connecting member 161, and the other end of the thrust member 140 is connected to the second connecting member 162. The cooperation of the first connecting member 161 and the second connecting member 162 enables the closed cavities 140a on all the thrust members 140 on the skin tensioning device 10 to be connected.

[0076] See Figure 7 In this embodiment, the skin tension unit 100 further includes a plurality of second elastic elements 132, which are divided into multiple groups. Each group of second elastic elements 132 is sleeved on the two ends of the corresponding guide member 110. Each group of second elastic elements 132 is used to exert a sliding force on the two adjacent first tension elements 120 towards each other. During hair transplantation, the skin tension unit 100 is first attached to the scalp A1 of the donor area. At this time, the two adjacent first tension elements 120 can be relatively close to each other under the action of their respective second elastic elements 132, so that the skin tension unit 100 is in a contracted state. Then, fluid of a preset pressure is injected into the closed cavity 140a of the thrust member 140 to lengthen the thrust member 140, thereby driving the skin first tension element 120 to slide. The skin gripping unit 200 on the skin first tension element 120 then drags the scalp A1 of the donor area, thereby achieving tension on the scalp A1 of the donor area.

[0077] Optionally, the multiple second elastic elements 132 can be divided into two groups, that is, each end of each guide 110 is fitted with a second elastic element 132.

[0078] Optionally, the second elastic element 132 can be a spring.

[0079] Optionally, see Figure 9 A stop portion 111 is provided at the end of the guide member 110, and the second elastic member 132 is located between the stop portion 111 and the corresponding guide member 110. The stop portion 111 can prevent the elastic member 132 from falling off the guide member 110, thus ensuring the normal use of the skin tensioning device 10.

[0080] Regarding the number of second elastic elements 132, this embodiment does not impose a specific limitation, as long as it can effectively drive two adjacent first tension elements 120 to slide in a direction closer to each other. For example, Figure 7 The skin tensioning device 10 shown has four second elastic elements 132, each of which is fitted onto the end of the corresponding guide element 110.

[0081] See Figure 6 and Figure 7 In this embodiment, the skin tensioning device 10 further includes a plurality of flexible material fasteners 170, which are disposed on the sidewalls of the corresponding first tensioning member 120. See also Figure 10 When the skin tension unit 100 is pressed against the scalp A1 of the donor area by the skin gripping unit 200, the fixation member 170 is tightened and fixed to the surgeon's face or chin using a snap-fit ​​structure, thereby achieving pressure between the skin gripping unit 200 and the scalp A1. See also... Figure 10 During the surgery, a face cushion D can be placed under the surgeon's face to improve the surgeon's comfort. Alternatively, a flexible tube 20 can be used to connect the skin tensioning device 10 to the fixation frame 30 to fix the skin tensioning device 30. The end of the guide 110 can be provided with a reinforcing through hole 110a for the flexible tube 20 to pass through.

[0082] Optionally, the fastener 170 can be a rubber band.

[0083] The number of fasteners 170 can be the same as the number of first tensioners 120. For example, Figure 7 The skin tensioning device 10 shown is provided with two first tension members 120 and two fixing members 170, with each fixing member 170 being disposed on the corresponding first tension member 120.

[0084] See Figure 6 In this embodiment, the skin tension unit 100 further includes at least one positioning member 150, which is disposed between two adjacent first tension members 120 so that the two adjacent first tension members 120 can slide translationally; the positioning member 150 is provided with a positioning protrusion 151 (see Figure 11 The first tensioning member 120 is provided with a positioning groove 120a (see...). Figure 7); and / or, the positioning member 150 is provided with a positioning groove, and the first tension member 120 is provided with a positioning protrusion; the positioning protrusion 151 is installed in the positioning groove 120a. Through the cooperation of the positioning groove 120a and the positioning protrusion 151, it can be ensured that the first tension member 120 can slide horizontally when the thrust member 140 extends or retracts, which can prevent the multiple guide members 110 between two adjacent first tension members 120 from intersecting and keep them parallel, and can also ensure that the scalp A1 in the donor area is subjected to uniform force. For example, the positioning member 150 is provided with a positioning protrusion 151 (see Figure 11 The first tensioning member 120 is provided with a positioning groove 120a (see...). Figure 7 It should be noted that positioning protrusions 151 and / or positioning grooves 120a are provided on both side walls of the positioning member 150 distributed along the axial direction of the guide member 110, and positioning grooves 120a and / or positioning protrusions 151 are provided on both side walls of the first tension member 120 distributed along the axial direction of the guide member 110.

[0085] Optionally, a position recognition unit 300 is provided on the side of the positioning member 150 away from the skin gripping unit 200.

[0086] Optionally, the positioning element 150 can be a frame structure and cover the two corresponding adjacent first tensioning elements 120. See Figure 11 The frame structure may include: a top plate 152, a first side plate 153, and a second side plate 154; the first side plate 153 and the second side plate 154 are distributed along the axial direction of the guide member 110 and are spaced apart on both sides of the top plate 152; the first side plate 153 and the second side plate 154 are each provided with a positioning protrusion 151 and / or a positioning groove 120a; the top plate 152 has an operation opening 152a, which is located between the first side plate 153 and the second side plate 154 and corresponds to the scalp A1 of the donor area. It should be noted that... Figure 11 The second side plate 154 was made transparent so that the positioning protrusion 151 on the second side plate 154 can be clearly shown.

[0087] Optionally, the positioning protrusion 151 can be an elastic glass bead. The elastic glass bead may include a mounting cylinder, an elastic element, and a bead head (none shown in the figures); the elastic element is disposed inside the mounting cylinder and connected to the elastic glass bead; when the elastic element is in its natural state, the elastic glass bead extends outside the mounting cylinder. The elastic element can be a compression spring or a spring-loaded spring. A receiving cavity may be provided on the first tension member 120 and / or the positioning member 150, and the mounting cylinder of the elastic glass bead is disposed in the receiving cavity. When the positioning member 150 is not properly installed on the first tension member 120, the bead head of the elastic glass bead will retract due to the compression from the positioning member 150 or the first tension member 120. Once the positioning member 150 is properly installed, the positioning groove 120a on the first tension member 120 and / or the positioning member 150 will avoid the bead head of the elastic glass bead, and the bead head of the elastic glass bead will extend into the positioning groove 120a under the action of the elastic element. Therefore, the elastic glass bead facilitates the installation and removal of the positioning member 150.

[0088] In this embodiment, see Figure 7 The positioning groove 120a may include a first groove 120a1 and a plurality of second grooves 120a2. The first groove 120a1 and the second grooves 120a2 are disposed on different ends of the positioning member 150 or on different first tension members 120. The first groove 120a1 is a strip-shaped groove distributed along the axial direction of the guide member 110, and the plurality of second grooves 120a2 are spaced apart along the axial direction of the guide member 110. The positioning protrusion 151 includes a first positioning protrusion 1511 and a second positioning protrusion 1512. The first positioning protrusion 1511 can slide along the first groove 120a1, and the second positioning protrusion 1512 is confined in the corresponding second groove 120a2. The following describes the cooperation process between the positioning member 150 and the first tension member 120, taking the first groove 120a1 and the second groove 120a2 as being set on different first tension members 120, and the first positioning protrusion 1511 and the second positioning protrusion 1512 as being set on different ends of the positioning member 150: Before the operation, the first positioning protrusion 1511 on one end of the positioning member 150 can be installed in the first groove 120a1, and the second positioning protrusion 1512 on the other end of the positioning member 150 can be installed in the corresponding second groove 120a2; then the first tension member 120 is attached to the scalp A1 of the donor area through the skin gripping unit 200; then, fluid with a preset pressure is introduced into the thrust member 140 to make the thrust member 140 extend, and the first positioning protrusion 1511 slides along the first groove 120a1, so that the two adjacent first tension members 120 slide in a direction away from each other, thereby using the skin first tension member 120 to achieve tension on the scalp A1 of the donor area.

[0089] The number of the second grooves 120a2 can be set as needed; this embodiment is not specifically limited, as long as the first tension member 120 can be translated. For example, Figure 7 The skin tensioning device 10 shown has four second grooves 120a2 on one side of the first tension member 120.

[0090] like Figure 6 and Figure 7 As shown, in this embodiment, the skin gripping unit 200 includes a skin contact portion 200a, which may be a silicone rubber layer. This material provides a high coefficient of friction for the skin contact portion 200a, ensuring that the skin gripping unit 200 can grip the skin in the donor area.

[0091] Optionally, the surface of the silicone rubber layer has an uneven structure. This configuration can further increase the coefficient of friction of the silicone rubber layer. Specifically, the uneven structure can be a mesh structure or... Figure 7 The multi-finger-like structure shown.

[0092] The hair follicle extraction process for hair transplant surgery using the skin tensioning device 10 provided in this embodiment is the same as that in Embodiment 1, except that the contraction and expansion methods of the skin tension unit 100 of the skin tensioning device 10 are different.

[0093] Example 3

[0094] See Figure 12 and Figure 13 This embodiment provides a skin tensioning device 10. The distribution of the first tension member 120 and the structure of the skin gripping unit 200 provided in this embodiment are different from those in Embodiment 1.

[0095] See Figure 13 In this embodiment, the skin gripping unit 200 may include a skin insertion part 200b, which can be inserted into the skin. The skin insertion part 200b can firmly fix the first tension member 120 to the scalp A1 of the donor area, which is beneficial to the tension of the scalp A1. It should be noted that the skin insertion part 200b and the position recognition unit 300 are disposed on different side walls of the first tension member 120.

[0096] Optionally, the skin-tightening portion 200b can be a metal needle, which can be installed on the first tension member 120 by welding, integral molding, or other methods. The number of skin-tightening portions 200b can be 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, or more; this embodiment does not impose a specific limitation, as long as it can effectively grip the scalp A1. The plurality of skin-tightening portions 200b can be distributed at intervals along the direction of the first tension member 120.

[0097] See Figure 12 and Figure 13In this embodiment, a plurality of first tension members 120 on the skin tension unit 100 are sequentially distributed along the circumference of the skin tensioning device 10. In this embodiment, the number of first tension members 120 can be two, and the two first tension members 120 can be arranged to form a rectangular structure. When the skin tension unit 100 is stretched, the force analysis of the scalp tensioning device 10 is as follows: Figure 14 As shown, 2×Ft=Fd1+Fd2+Fd3+Fd4+……Fdn, where Ft is the force applied by the first elastic element 131 to the first tension element 120, and Fdn is the force exerted by the nth skin-tightening part 200b on the scalp A1, where n is greater than or equal to 1. It can be seen that the first tension element 120, which forms a rectangular structure, can ensure that the force applied by the first elastic element 131 to the first tension element 120 is entirely applied to the skin-tightening part 200b, thereby enabling the skin-tightening part 200b to effectively pull the scalp A1 and guaranteeing the tensioning effect of the scalp tensioning device 10.

[0098] Of course, the number of first tension members 120 can also be 3, 4, 5 or more, and multiple first tension members 120 can also be arranged into a circular structure, a pentagonal structure, a hexagonal structure, etc.

[0099] The hair follicle extraction process for hair transplant surgery using the skin tensioning device 10 provided in this embodiment is the same as in Embodiment 1.

[0100] Example 4

[0101] like Figure 15 and Figure 16 As shown, this embodiment provides a skin tensioning device 10. The structure of the skin tension unit 100 provided in this embodiment is different from the structure of the skin tension unit 100 in Embodiment 3.

[0102] In this embodiment, the skin tension unit 100 may include a compressible second tension member. See also Figure 17 Before the procedure, clamp B (a clamp with a scissor-like structure) can be used to clamp the second tension element, causing the skin tension unit 100 to deform and contract. Then, the skin tension unit 100 is pressed onto the scalp A1 of the donor area. Afterward, clamp B is released, and the skin tension unit 100 expands on its own, allowing the skin gripping unit 200 to pull the scalp A1 of the donor area, thereby achieving tension on the scalp A1.

[0103] In this embodiment, see Figure 15 and Figure 16 The second tensioning element can be ring-shaped. This second tensioning element has a simpler structure, which can reduce the cost and manufacturing cycle of the skin tensioning device 10. The second tensioning element can be a PC substrate, and the position recognition unit 300 and the skin insertion part 200b are disposed on different side walls of the PC substrate.

[0104] In this embodiment, see Figure 15 and Figure 16 The second tensioning element has a deformation notch 100a. The deformation notch 100a facilitates the contraction of the second tensioning element under the action of external force, ensuring that the skin tension unit 100 has sufficient contraction to tighten the scalp A1.

[0105] Optionally, the skin tension unit 100 has mounting countersunk holes (not shown in the accompanying drawings) at both ends near the deformation notch 100a. See also Figure 17 The countersunk hole can be fitted with the clamp B through the countersunk pin C, which can ensure the firm assembly between the skin tension unit 100 and the clamp B and prevent the skin tension unit 100 from falling off the clamp B during the operation.

[0106] The hair follicle extraction process for hair transplant surgery using the skin tensioning device 10 provided in this embodiment is basically the same as the hair follicle extraction process in Embodiment 1, except that the method of adjusting the state of the skin tension unit 100 to a contracted state is different. It should be noted that, see [link to previous section]. Figure 16 The skin tension unit 100 is provided with a plurality of reinforcing through holes 110a at intervals along the circumference, and the flexible tube 20 can be inserted through the reinforcing through holes 110a to connect the skin tension unit 100 to the fixing frame 30.

[0107] The skin tensioning device 10 provided in this embodiment is not only simple in structure, which can reduce the cost and manufacturing cycle of the skin tensioning device 10, but also highly reliable.

[0108] Example 5

[0109] See Figure 18 and Figure 19 This embodiment provides a skin tensioning device 10. The structure of the skin tension unit 100 of the skin tensioning device 10 provided in this embodiment is different from the structure of the skin tension unit 100 in embodiment 4.

[0110] See Figure 18 and Figure 19 In this embodiment, the second tension member includes a head 100b, a waist 100c, and a tail 100d connected in sequence. The waist 100c is clamped to deform the tail 100d of the second tension member. The tail 100d has a skirt-like structure, and deformation notches 100a are spaced circumferentially on the tail 100d. A skin gripping unit 200 is disposed on the tail 100d of the second tension member. The skirt-like structure of the tail 100d of the second tension member allows for a better fit to the contour of the surgeon's head A.

[0111] Understandably, the outer diameter of the waist 100c of the second tensioning member is the smallest, causing the second tensioning member to be concave inward at the waist 100c. See also Figure 20 The clamp B (a clamp with a scissor-like structure) can be used to clamp the waist 100c of the skin tension unit 100, causing the waist 100c of the skin tension unit 100 to deform inward and contract. The skin tension unit 100 can be made of a flexible material, such as a PC substrate.

[0112] Regarding the number of deformation notches 100a provided in the skin gripping units 200, this embodiment does not impose specific limitations, as long as it ensures that the skin tension units 100 have sufficient contraction to tighten the scalp A1. Furthermore, regarding the number of skin gripping units 200 on each partition of the tail 100d of the skin tension unit 100, this embodiment also does not impose specific limitations, as long as it effectively grips the scalp A1. For example, Figure 18 One skin gripping unit 200 is provided on each partition of the tail 100d of the second tension member shown.

[0113] Optionally, the head 100b of the skin tension unit 100 can be in the form of... Figure 18 and Figure 19 The position recognition unit 300 is located on the wall of the head 100b of the skin tension unit 100, away from the skin gripping unit 200. Additionally, the head 100b of the skin tension unit 100 has multiple reinforcing through holes (not shown in the figures) spaced circumferentially, through which the flexible tube 20 can pass to connect the skin tension unit 100 to the mounting bracket 30.

[0114] The hair follicle extraction process for hair transplant surgery using the skin tensioning device 10 provided in this embodiment is the same as the hair follicle extraction process in Embodiment 4.

[0115] Example 6

[0116] See Figure 21 and Figure 22 This embodiment provides a skin tensioning device 10. The structure of the skin tension unit 100 of the skin tensioning device 10 provided in this embodiment is different from that in embodiment 4.

[0117] See Figure 21 and Figure 22In this embodiment, the second tension member includes multiple squeezing portions 100e and multiple deformable portions 100f. The squeezing portions 100e and deformable portions 100f are alternately distributed and sequentially connected along the circumference of the second tension member. The skin gripping unit 200 is disposed on the squeezing portions 100e. Before the procedure, the clamp is used to clamp the squeezing portions 100e of the skin tension unit 100, causing the deformable portions 100f to deform inward and contract. Then, the skin tension unit 100 is pressed onto the scalp A1 of the donor area. Afterward, the clamp is released, and the deformable portions 100f of the skin tension unit 100 automatically expand. The skin tension unit 100 is then secured to the fixation frame 30 using a flexible tube 20. See also... Figure 23 It can apply force to multiple compression points 100e, so that the skin tension unit 100 is stressed in multiple circumferential directions, resulting in uniform stress on the scalp A1 in the donor area. It should be noted that... Figure 23 The thick straight arrow indicates the direction of force on the extrusion section 100e.

[0118] Optionally, the extrusion part 100e can be a sheet metal part. A reinforced through hole 110a for the passage of the hose 20 can be formed on the extrusion part 100e.

[0119] Optionally, see Figure 21 A force-bearing notch 100e1 may be provided on the extrusion part 100e. The force-bearing notch 100e1 can cooperate with the cylinder on the clamp to make the extrusion part 100e better bear the force, so that the deformable part 100f of the skin tension unit 100 can be more easily deformed.

[0120] Optionally, the deformable part 100f can be made of a flexible material such as silicone.

[0121] Regarding the number of deformable portions 100f and compression portions 100e, this embodiment does not impose specific limitations, as long as it ensures that the scalp A1 is gripped and the skin tension unit 100 effectively contracts. For example, Figure 21 and Figure 22 The skin tensioning device 10 shown has four compression parts 100e and four deformation parts 100f.

[0122] The hair follicle extraction process for hair transplant surgery using the skin tensioning device 10 provided in this embodiment is the same as the hair follicle extraction process in Embodiment 4.

[0123] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A skin tensioning device, characterized in that, The skin tensioning device includes a skin tension unit and a skin gripping unit disposed on the skin tension unit. The skin tension unit has a contracted state and an open state. In the contracted state, the skin tension unit can be fixed to the skin by the skin gripping unit. In the open state, the skin tension unit can provide a pulling force to the skin gripping unit to tension the skin. The skin tension unit includes at least one guide, a plurality of first tension members and at least one retractable thrust member. The first tension members are slidably disposed on the corresponding guide. The plurality of first tension members are relatively close to or far apart from each other to cause the skin tension unit to contract or expand. The skin gripping unit is disposed on the first tension member. The thrust member is disposed between two adjacent first tension members to push the two adjacent first tension members to slide in a direction that approaches or moves away from each other; the thrust member has a closed cavity for introducing fluid at a preset pressure to extend the thrust member; The skin tension unit further includes at least one positioning element, which is disposed between two adjacent first tension elements to enable the two adjacent first tension elements to slide horizontally. The positioning component is a frame structure and includes a top plate, a first side plate, and a second side plate; the first side plate and the second side plate are both distributed along the axial direction of the guide component and are spaced apart on both sides of the top plate. The first side plate and the second side plate are provided with positioning protrusions, and the first tension member is provided with positioning grooves; and / or, the first side plate and the second side plate are provided with the positioning grooves, and the first tension member is provided with the positioning protrusions; the positioning protrusions are installed in the positioning grooves; The positioning groove includes a first groove and a plurality of second grooves. The first groove and the second grooves are disposed on different ends of the positioning member or on different first tension members. The first groove is a strip groove distributed along the axial direction of the guide member, and the plurality of second grooves are distributed at intervals along the axial direction of the guide member. The positioning protrusion includes a first positioning protrusion and a second positioning protrusion. The first positioning protrusion can slide along the first groove, and the second positioning protrusion is limited to the corresponding second groove.

2. The skin tensioning device according to claim 1, characterized in that, The skin gripping unit includes a skin contact portion and / or a skin insertion portion, wherein the skin contact portion is capable of contacting the skin and the skin insertion portion is capable of being inserted into the skin.

3. The skin tensioning device according to claim 1, characterized in that, The skin tensioning device further includes a position recognition unit, which is disposed on the outer wall of the skin tensioning unit away from the skin gripping unit.

4. The skin tensioning device according to claim 1, characterized in that, The thrust component is made of a flexible material.

5. The skin tensioning device according to claim 1, characterized in that, The skin tension unit also includes a plurality of second elastic elements, which are divided into multiple groups. Each group of second elastic elements is sleeved on the two ends of the corresponding guide element. Each group of second elastic elements is used to provide a sliding force to two adjacent first tension elements in a direction that moves them closer to each other.

6. The skin tensioning device according to claim 1, characterized in that, The positioning protrusion is an elastic glass bead.

7. The skin tensioning device according to claim 1, characterized in that, The inner wall of the enclosed cavity has an uneven structure.

8. The skin tensioning device according to claim 1, characterized in that, The skin tensioning device also includes multiple flexible material fasteners, which are disposed on the sidewalls of the corresponding first tensioning member.

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