Skin stretch fixation device

Abstract

The invention relates to the technical field of medical devices, and discloses a skin stretching and fixing device, wherein a skin anchor is integrally arranged by a base plate fitted to the skin, an anchor hook with a pulling line wound therearound, and a puncture needle, wherein a skin nail portion passes through a nailing position on the base plate and punctures the skin, and together with the puncture needle, the skin anchor is fixed to the skin; a transdermal patch is attached to the periphery of a wound, and side scales and the wound can measure the wound and evaluate the number of skin suture tension controllers required to be used; puncture point marks are provided on both sides of a puncture accommodation position, and the skin anchor is embedded in the puncture accommodation position, and the puncture needle is aligned with the puncture point mark and punctures obliquely in a direction close to the wound, thereby ensuring that the puncture position is spaced from the wound; an angle between the puncture needle and the base plate is set, so that the puncture needle is conveniently pressed into the skin, and the amount of skin tissue of the skin anchor pulled by the puncture needle is stably controlled, so that a quick judgment can be made on the wound, and the effect and efficiency of the operation can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a skin stretching and fixing device. Background Art

[0002] Surgical operations such as tumor resection or fasciotomy can cause large-area skin trauma, and some chronic wounds such as diabetes and ulcers usually cannot heal on their own. In the past, the wound was closed directly with needles and threads, but some wounds had skin defects that could not be directly closed by pulling the wound surface together. They often needed to be closed with flap transplantation or tension-reducing incisions, which caused great damage and high costs, adding great pain to the patient. In the medical field, especially in the field of surgery, the use of a skin suture tension controller is a common surgical method, which mainly uses a skin stretching technique, using a pull line to make a fixed suture method at multiple sites around the wound. By gradually tightening the pull line, the skin tissue and cells on both sides of the wound are promoted to divide, proliferate, grow, increase the cell gap and increase the inherent elasticity, and effectively and uniformly stretch the skin tissue continuously, thereby increasing the skin area and covering the wound. A device that can provide continuous mechanical tension is used to act on the skin tissue. When the skin tissue closes to a certain extent, the wound is closed by suturing.

[0003] In the prior art, in order to prevent the pull wire from directly penetrating the edge of the wound and causing secondary cuts, an additional skin fixation device is arranged around the wound, on which a pull wire is wound. The end of the pull wire can pull and tighten the edge of the wound to stably close it inside the wound, further making the force around the wound evenly distributed, striving for better healing effect.

[0004] However, due to the different specifications and shapes of different wounds, it is often impossible to make timely and accurate assessments of the wounds. Therefore, it is technically difficult to quickly arrange an appropriate number of skin fixation devices around the wounds. In addition, while protecting the pulled part of the skin from secondary damage, the effectiveness and efficiency of surgical treatment must also be taken into account. Summary of the invention

[0005] The purpose of the present invention is to provide a skin stretching and fixing device, which can quickly evaluate the number of skin suture tension controllers required for a wound, and assist medical staff in efficiently locating skin anchors to improve treatment effects.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Skin stretch fixation device, including:

[0008] A transdermal patch, wherein the transdermal patch is used to be attached to the periphery of a wound, and a scale is provided on the side of the transdermal patch close to the wound, so as to measure the size of the wound; the transdermal patch is provided with a plurality of puncture accommodation positions, and two adjacent puncture accommodation positions are arranged at a preset distance, and the transdermal patch is provided with puncture point marks on both sides of the puncture accommodation positions;

[0009] A skin anchor, the skin anchor comprising an integrally arranged substrate, an anchor hook and a puncture needle, the anchor hook being used to wind a traction line; the substrate being used to fit the skin, the substrate being provided with a nailing position; the angle between the puncture needle and the substrate being in the range of 45° to 70°; the puncture needle being able to align with the puncture point mark and obliquely puncture the skin in a direction close to the wound so that the substrate abuts against the skin, and the skin anchor being embedded in the puncture accommodation position;

[0010] The skin nail, when the base plate abuts against the skin, part of the skin nail can pass through the nailing position and pierce the skin so that the skin nail can be engaged with the skin anchor and the skin.

[0011] As an optional technical solution for the skin stretching and fixing device, the two puncture needles are symmetrically arranged on both sides of the base plate, and a beveled blade surface is provided on one side of the puncture needle to form a puncture tip. The two beveled blade surfaces are symmetrically arranged, and the puncture needle is deformed in the opposite direction of the inclination direction of the beveled blade surface so that the puncture needle punctures the skin along the midline direction of the puncture tip.

[0012] As an optional technical solution of the skin stretching and fixing device, the skin anchor includes a rubber sleeve, which is sleeved on the outside of the anchor hook and wrapped around the side of the anchor hook that contacts the pulling line.

[0013] As an optional technical solution for the skin stretching and fixing device, the inner side edge of the anchor hook in contact with the pulling wire is configured as a rolled fillet.

[0014] As an optional technical solution for the skin stretching and fixing device, the anchor hook is connected to the head of the base plate, and the anchor hook is bent upward so that the opening of the anchor hook faces the tail of the base plate, and an elastic protrusion portion is provided at an initial distance between the anchor hook and the upper surface of the base plate; the skin stretching and fixing device also includes a wire bridge tube, the initial distance is smaller than the tube wall thickness of the wire bridge tube, and the wire bridge tube can be inserted and clamped between the elastic protrusion portion and the base plate.

[0015] As an optional technical solution of the skin stretching and fixing device, a saddle portion is provided in the middle of the base plate, and when both ends of the base plate abut against the skin, the saddle portion is spaced apart from the skin.

[0016] As an optional technical solution for the skin stretching and fixing device, a compensating flange is vertically protruded on the base plate at the periphery of the nailing position, and the skin nail abuts against the compensating flange. A rear limiting portion is provided at the end of the compensating flange away from the wound, and the rear limiting portion can prevent the skin nail and the compensating flange from slipping off.

[0017] As an optional technical solution for the skin stretching and fixing device, the base plate is provided with a suture hole, and the suture hole is used for passing sutures, and the skin anchor can be fixed at the puncture accommodation position through the sutures.

[0018] As an optional technical solution of the skin stretching and fixing device, the contact surface between the transdermal patch and the skin is provided with a sustained-release drug.

[0019] As an optional technical solution of the skin stretching and fixing device, the puncture accommodation position is divided into a single accommodation position and a double accommodation position, and the transdermal patch is provided with a center mark at the front end of the single accommodation position, and the center mark is used to align with the symmetry center of the skin anchor so that the skin anchor is embedded in the single accommodation position;

[0020] The transdermal patch is provided with two center marks at intervals at the front end of the double-accommodating position, and the symmetry center of the skin anchor is selectively aligned with one of the center marks to allow the skin anchor to be embedded in the double-accommodating position.

[0021] Beneficial effects of the present invention:

[0022] The skin stretching and fixing device provided by the present invention includes a transdermal patch, a skin anchor and a skin nail. The skin anchor includes an integrally arranged substrate, an anchor hook and a puncture needle. The anchor hook is used to wind a traction line, and the substrate is used to fit the skin. The angle between the puncture needle and the substrate is set to be 45° to 70°. On the one hand, it is convenient for medical staff to operate the puncture needle to press into the skin, and on the other hand, it can further stably control the amount of skin tissue pulled by the skin anchor through the puncture needle. A nailing position is set on the substrate. When the substrate abuts against the skin, the skin nail is engaged with the skin anchor. The skin nail is used to fix the skin anchor to the skin. Part of the skin nail can pass through the nailing position and puncture the skin, so that the skin anchor can be stably fixed on the skin.

[0023] The transdermal patch is used to be attached to the periphery of the wound. The scale on the side of the transdermal patch is aligned with the edge of the wound, which can assist medical staff in measuring the size of the wound to evaluate the number of skin suture tension controllers needed. The transdermal patch has multiple puncture accommodating positions for placing skin anchors, which assists medical staff in efficiently locating skin anchors; two adjacent puncture accommodating positions are arranged at a certain distance, and the transdermal patch is provided with puncture point marks on both sides of the puncture accommodating positions. The puncture needle can be aligned with the puncture point mark and puncture the skin obliquely in the direction close to the wound so that the substrate and the skin are in contact. The skin anchor is just embedded in the puncture accommodating position. The puncture position of the puncture needle needs to be spaced a certain distance from the wound to avoid being too close to the edge of the wound, causing skin tearing, or too far from the edge of the wound, applying too little tension to the skin, making it difficult to close the wound. The use of this skin tension fixation device can quickly judge the wound, improve the efficiency of medical staff's operation and the effect of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a working schematic diagram of the skin stretching and fixing device provided in a specific embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a first skin anchor of the skin stretching and fixing device provided in a specific embodiment of the present invention;

[0026] Figure 3 It is a schematic structural diagram of a second skin anchor of the skin stretching and fixing device provided in a specific embodiment of the present invention;

[0027] Figure 4 is a schematic structural diagram of a third skin anchor of the skin stretching and fixing device provided in a specific embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the deformation structure of the puncture needle of the skin anchor of the skin stretching and fixing device provided in a specific embodiment of the present invention;

[0029] Figure 6 It is a structural schematic diagram of a rubber sleeve of a skin stretching and fixing device provided in a specific embodiment of the present invention;

[0030] Figure 7 It is a schematic diagram of the assembly of the skin anchor and the rubber sleeve of the skin stretching and fixing device provided in a specific embodiment of the present invention;

[0031] Figure 8 It is a schematic structural diagram of a skin anchor, a skin nail and a bridging tube of a skin stretching and fixing device provided in a specific embodiment of the present invention;

[0032] Fig. 9 It is a schematic structural diagram of a transdermal patch with only a single accommodation position of a skin stretching and fixing device provided by a specific embodiment of the present invention;

[0033] Fig.10 It is a schematic structural diagram of a transdermal patch with a single accommodation position and a double accommodation position of a skin stretching and fixing device provided in a specific embodiment of the present invention.

[0034] In the figure:

[0035] 100, transdermal patch; 101, scale; 102, puncture point mark; 103, center mark; 110, puncture receiving position; 111, single receiving position; 112, double receiving position;

[0036] 200, skin anchor; 210, base plate; 2101, nailing position; 2102, suture hole; 211, compensating flange; 212, saddle; 213, rear limiter; 214, front limiter; 220, anchor hook; 2201, elastic convex point; 230, puncture needle; 2301, bevel blade surface; 231, puncture tip; 240, rubber sleeve;

[0037] 300, leather staples; 400, wire bridge tube; 900, wound edge. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] like Figures 1 to 10 As shown, the present invention discloses a skin stretching and fixing device, including a transdermal patch 100, a skin anchor 200 and a skin nail 300. The skin anchor 200 includes an integrally arranged substrate 210, an anchor hook 220 and a puncture needle 230, wherein the anchor hook 220 is used to wind a pulling line, and the pulling line extends from the skin suture tension controller and is wound around a plurality of skin anchors 200 one by one according to a preset route. Specifically, the pulling line can be wound around the anchor hook 220 of the skin anchor 200 in a manner similar to tying shoelaces, which can prevent the pulling line from falling off. The substrate 210 can fit the skin, and a nailing position 2101 is provided on the substrate 210. When the substrate 210 abuts against the skin, part of the skin nail 300 can pass through the nailing position 2101 and puncture the skin so that the skin nail 300 can be engaged with the skin anchor 200 and the skin together, so as to further stably fix the skin anchor 200 on the skin. The transdermal patch 100 is used to be attached to the periphery of a wound, and is provided with a plurality of puncture receiving positions 110 for placing skin anchors 200, so as to assist medical personnel in quickly and efficiently locating the skin anchors 200.

[0043] Specifically, two adjacent puncture accommodating positions 110 are arranged at a certain distance, and the transdermal patch 100 is provided with a puncture point mark 102 on the periphery of the puncture accommodating position 110. The puncture needle 230 can be aligned with the puncture point mark 102 and puncture the skin obliquely in the direction close to the wound so that the substrate 210 abuts against the skin. The skin anchor 200 is just embedded in the puncture accommodating position 110, and the puncture position of the puncture needle 230 needs to be arranged at a certain distance from the wound to avoid tearing the skin at the edge 900 of the wound; the puncture needle 230 is arranged toward the wound, and the angle between the puncture needle 230 and the substrate 210 is limited to 45° to 70°. On the one hand, it is convenient for medical staff to operate the puncture needle 230 to press it into the skin, and on the other hand, it can further stably control the amount of skin tissue that the skin anchor 200 pulls the anchor through the puncture needle 230, so as to avoid excessive or insufficient skin tissue pulling the anchor to affect the effect of skin stretching. If the angle between the puncture needle 230 and the base plate 210 is too small, the amount of skin tissue for anchoring is too small, and when subjected to a large pulling force, the skin is easily torn during the process of stretching and closing the skin; if the angle between the puncture needle 230 and the base plate 210 is close to 90°, the amount of skin tissue for anchoring is too large, and the puncture needle 230 cannot anchor the skin. During the process of stretching and closing the skin, the puncture needle 230 will also be subjected to a large reverse force from the skin tissue in the vertical direction as a whole. The puncture needle 230 is very easy to deform, causing the skin anchor 200 to lose its anchoring effect on the skin.

[0044] The transdermal patch 100 is also provided with a scale 101 on the side close to the wound. The scale 101 is aligned with the edge of the wound, which can assist medical staff in quickly measuring the size of the wound, and furthermore, can evaluate the need to use several skin suture tension controllers. The use of the skin stretching and fixing device can quickly make a judgment on the wound, thereby improving the efficiency of medical staff's operation and the effect of the surgery. Specifically, the transdermal patch 100 is provided with two types: a ruler type and an arc type. Specifically, the edge of one side where the scale 101 is provided is divided into a straight line type and an arc type, which can further optimize the shape of the transdermal patch 100 to match wounds of different shapes. The puncture accommodation position 110 of the transdermal patch 100 is divided into a single accommodation position 111 and a double accommodation position 112. Fig. 9 As shown in the figure, the transdermal patch 100 is provided with a center mark 103 at the front end of the single accommodation position 111, and the center mark 103 is used to align with the symmetry center of the skin anchor 200 so that the skin anchor 200 is embedded in the single accommodation position 111. When the skin anchor 200 is punctured, the symmetry center of the skin anchor 200 is aligned with the puncture accommodation position 110, which can assist medical staff to quickly align and arrange the skin anchor 200; Fig.10 As shown in the figure, the transdermal patch 100 is provided with two center marks 103 at intervals at the front end of the double receiving position 112. The symmetry center of the skin anchor 200 is selectively aligned with one of the center marks 103 so that the skin anchor 200 is embedded in the double receiving position 112, which can assist medical staff to flexibly and accurately place the skin anchor 200.

[0045] The specific use of the skin stretching and fixing device: at least a pair of transdermal patches 100 of the same specifications are required, which are relatively attached to the two sides of the wound, and then matched with a corresponding plurality of skin anchors 200 and skin nails 300, so as to form a structure that can use a skin suture tension controller to control the pull line to drive the wound to close. Each specification of the transdermal patch 100 corresponds to the effective applicable range of the preset wound size. It should be noted that before using the skin suture tension controller to stretch the skin, it is necessary to use the skin nails 300 to additionally staple and fix the two sides of the wound that are not attached in the gaps on both sides of the corresponding arrangement of the transdermal patch 100. In this embodiment, the scale 101 on the side of the transdermal patch 100 has a range of 10 cm. When the wound size is equal to or slightly greater than 10 cm, the transdermal patch 100 with a single accommodation position 111 can be used normally, and the distribution of the skin anchors 200 thereon can completely cover the anchor point positions required for wound closure. When the wound is less than 10 cm, a transdermal patch 100 with double accommodation positions 112 is required, which can selectively change the gap between two adjacent skin anchors 200 according to actual conditions, taking into account the number of skin anchors 200 arranged around the small wound and the closure effect. The aforementioned skin stretching and fixing device using a single pair of transdermal patches 100 is generally used with only one skin suture tension controller.

[0046] When actually performing wound closure treatment, in most cases, some wounds are much larger than the scale 101 of the 10 cm transdermal patch 100. In this case, in addition to replacing the transdermal patch 100 with a larger scale, multiple pairs of transdermal patches 100 can also be arranged in coordination. With a larger wound, the end of the wound will generally be torn and extended. The skin staples 300 are used to staple the non-open wound at the end of the wound, and the edges are clamped to prevent further expansion of the wound. The scale 101 of the transdermal patch 100 is used to roughly measure the wound size. If the size of the wound is multiple times the scale 101, the same multiple of skin stretching and fixing devices can be arranged in sections along the extension direction of the wound to pull and close the wound. Each set of skin stretching and fixing devices corresponds to a skin suture tension controller, and the segmented pulling and closing can be performed within the effective applicable range of each pair of transdermal patches 100. For large irregular wounds, since the width of open wounds at different positions is different, the applied tension of multiple skin suture tension controllers can be adjusted according to the width and position of different wounds, which can be better applied to the closure treatment of large wounds and improve the closure efficiency. If the size of the wound is not an integer multiple of the scale 101, medical staff can use the transdermal patch 100 with double accommodation positions 112 and the transdermal patch 100 with a single accommodation position 111 according to the clinical situation.

[0047] It is understandable that the distance between the skin surface and the underlying bones, blood vessels or internal organs is generally in the range of 5 mm to 6.5 mm. Therefore, in order to ensure the safety of puncture, the puncture needle 230 is set to a safe depth that is less than or equal to 4.5 mm when pressed into the skin. This can ensure that the puncture needle 230 does not damage the subcutaneous muscle tissue and avoid the risk of puncturing blood vessels and internal organs.

[0048] like Figure 5 As shown in the figure, two puncture needles 230 are symmetrically arranged on both sides of the base plate 210, which can better fix the skin anchor 200 and the skin; a beveled blade surface 2301 is arranged on one side of the puncture needle 230 to form a puncture tip 231, and the two beveled blade surfaces 2301 are symmetrically arranged, which further assists the puncture needle 230 to press into the skin more easily; the puncture needle 230 is deformed in the opposite direction of the inclination direction of the beveled blade surface 2301, and an adduction angle is arranged between the two puncture needles 230, and the two sides are inwardly retracted by 0° to 30°, so that the puncture needle 230 punctures the skin along the midline direction of the puncture tip 231, so that the contact area between the puncture tip 231 and the skin becomes smaller, avoiding the puncture needle 230 from having a cutting force on the skin in addition to pressing into the skin when puncturing the skin, and the inwardly retracted puncture needle 230 not only enhances the strength of the puncture needle 230 of the skin anchor 200, but also reduces the puncture force when puncturing the skin, thereby reducing the cutting force with the skin. For example, the side edges of the puncture needle 230 are chamfered, which can increase the taper of the puncture needle 230 while ensuring the strength of the puncture needle 230 as much as possible, so that the shape of the puncture tip 231 is more similar to the conical needle tip, and the volume of the puncture needle 230 is reduced to reduce the resistance of the puncture needle 230 pressing into the skin. Furthermore, in practice, the puncture needle 230 is generally set to be retracted 10° to 15°, and the retraction angle is half of the angle of the puncture tip 231, which can meet the requirement that the contact area between the puncture needle 230 and the skin is as small as possible, so that the skin is punctured better, and the pain of the skin anchor 200 puncture can be effectively reduced.

[0049] In this embodiment, the transdermal patch 100 is a sustained-release patch, and also has the sustained-release function of containing drugs. The contact surface of the transdermal patch 100 with the skin is provided with sustained-release drugs, and generally correspondingly, a sustained-release analgesic and detumescent drug can be added, for example, a primary analgesic - ibuprofen; a secondary analgesic - tramadol; a tertiary analgesic - fentanyl, etc., which can effectively reduce local inflammatory edema and relieve pain symptoms for the wound. As the treatment time increases, it can also improve circulation, increase local venous return, and promote the metabolism and elimination of local inflammatory edema. Exemplarily, the transdermal patch 100 uses different colors to distinguish the level of analgesic release, which is fully adapted to the different operation times of skin stretching and the application positions of the skin anchor 200 for different wounds, for example, a primary analgesic - blue; a secondary analgesic - green; a tertiary analgesic - yellow. Each color can correspond to a different range of sustained-release days, corresponding to the severity of symptoms near the wound, and the characteristics that the first-level analgesic has the weakest effect, and the second-level and third-level analgesics gradually increase in effect and tend to require long-term treatment. Blue corresponds to 1 to 5 days; green corresponds to 6 to 10 days; and yellow corresponds to 11 to 15 days. Use the corresponding level of sustained-release patch for different wounds to meet the surgical cycle of distraction surgery.

[0050] It is understandable that the sustained release function of the transdermal patch 100 is positively correlated with the temperature and dissolution conditions. The higher the temperature, the faster the sustained release. Conversely, the lower the temperature, the slower the sustained release. The more blood penetrates, the faster the sustained release. Conversely, the less blood penetrates, the slower the sustained release. At the same time, the transdermal patch 100 can absorb the infiltrated tissue fluid produced during the stretching operation. In clinical practice, as the transdermal patch continuously absorbs the infiltrated tissue fluid, the use of NPWT can be avoided for non-large wounds, reducing surgical costs. In addition, the painkillers stored in the transdermal patch 100 are slowly released, gradually releasing the efficacy of the drugs, which can stably and persistently relieve pain and reduce swelling.

[0051] Specifically, the inner side of the hook 220 of the skin anchor 200 in contact with the traction wire can be processed by pressing fillet, rolling, chamfering and other processing methods. Preferably, it can be set to roll fillet, so that the traction wire and the skin anchor 200 can cooperate well, which can prevent the traction wire from breaking due to friction at the joint between the traction wire and the hook 220 during the gradual tightening process, thereby reducing the surgical risk of the traction operation. Since the wound needs to be cleaned, the center of the wound is slightly sunken. During the skin stretching process, the skin anchor 200 will also tilt downward toward the center of the wound as the wound edge closes, and the hook 220 will be slightly pressed against the skin. Therefore, the outer side of the hook 220 also needs to remove burrs and keep it smooth.

[0052] Furthermore, if Figure 6 and Figure 7As shown in the figure, the skin anchor 200 includes a rubber sleeve 240, which is sleeved on the outside of the anchor hook 220 and wraps the side of the anchor hook 220 that is in contact with the pull wire. The rubber coating process not only makes the pull wire and the skin anchor 200 cooperate well and protects the pull wire from being worn off during use, but also can replace the rolling and rounding process of the skin anchor 200, greatly reducing costs and improving production efficiency.

[0053] In this embodiment, the anchor hook 220 is connected to the head of the base plate 210, and the anchor hook 220 is bent back upward so that the opening of the anchor hook 220 faces the tail of the base plate 210. The anchor hook 220 and the upper surface of the base plate 210 are separated by an initial distance and an elastic convex point portion 2201 is provided. The skin stretching and fixing device also includes a wire bridge tube 400, the initial distance is less than the tube wall thickness of the wire bridge tube 400, and the wire bridge tube 400 can be inserted and clamped between the elastic convex point portion 2201 and the base plate 210, and the wire bridge tube 400 is compressed to a certain extent, so that the wire bridge tube 400 can be clamped more stably. Due to the concave center of the wound, when the pulling wire is pulled on the skin anchor 200 and gradually tightened, the wire bridge tube 400 abuts against the spring sheet on the other side of the elastic convex point portion 2201. As the contact surface between the spring sheet and the wire bridge tube 400 decreases, the wire bridge tube may slip off the spring sheet. Therefore, according to the actual situation, the length of the spring piece of the anchor hook 220 on the other side of the elastic protrusion part 2201 is set to a preset length, the spring piece of the anchor hook 220 and the substrate 210 are opened in a trumpet shape, and the angle between the spring piece of the anchor hook 220 and the substrate 210 is set to a preset angle, so that when the inclined wire bridge tube 400 is tensioned, the wire bridge tube 400 will not be separated from the anchor hook 220 of the skin anchor 200 due to the external force on the wire bridge tube 400, thereby avoiding the tension failure of the skin suture tension controller and stabilizing the assembly structure of the wire bridge tube 400.

[0054] like Figure 3 As shown in , a saddle portion 212 can be selectively provided in the middle of the base plate 210. When both ends of the base plate 210 are in contact with the skin, the saddle portion 212 is spaced apart from the skin. The saddle-shaped design reduces the area of ​​the skin anchor 200 in contact with the skin, effectively reducing the damage to the skin caused by negative pressure during NPWT surgery, and improving the comfort of the skin during surgery. Moreover, this saddle-shaped skin anchor 200 design can adapt to the commonly used skin stapler models in China and the skin staples 300 with high molding height, reducing the procurement cost of non-standard products, eliminating development costs, and improving labor efficiency. Figure 2 As shown in , the flat-plate skin anchor 200 can adapt to the position where the skin tissue is relatively close to the blood vessels and internal organs, which can improve the application range of the skin stretching and fixing device, and the skin nail 300 with a smaller forming height is required to further cooperate with the surgical treatment of special positions. The flat-plate structure is simple and the manufacturing cost is relatively low. Figure 4As shown in the figure, on the basis of the flat skin anchor 200, a compensating flange 211 is vertically protruded on the outer periphery of the nailing position 2101 on the base plate 210. The compensating flange 211 can fill the gap between the ordinary skin nail 300 with a higher molding height and the base plate 210, so that the skin nail 300 and the compensating flange 211 can abut against each other, further stabilizing the assembly of the skin nail 300; the skin anchor 200 with this flange design can also adapt to the skin nail 300 with a high molding height, as well as the skin suture device models commonly used in China.

[0055] The above three skin anchors 200 expand the specific treatment positions that the skin stretching and fixing device can be used for, and provide targeted options for stretching. It should be noted that the skin anchors 200 must be provided with a rear limiter 213 to prevent the skin anchor 200 from being pulled toward the center of the wound when the skin anchor 200 is pulled closed, and the skin nail 300 and the skin anchor 200 slip off. Specifically, the flat-type skin anchor 200 and the saddle-type skin anchor 200 both directly set the rear end of the nailing position 2101 as the rear limiter 213, while the flange-type skin anchor 200 is provided with a rear limiter 213 at the end of the compensation flange 211 away from the wound, and the rear limiter 213 can prevent the skin nail 300 from slipping off at the compensation flange 211 abutting against it. Furthermore, the saddle-shaped skin anchor 200 needs to be provided with a reasonable nailing position 2101. Since the middle connecting portion of the skin nail 300 is in close contact with the saddle portion 212, but when removing the skin nail 300, the pliers of the removal tool need to be inserted from the back between the skin nail 300 and the saddle portion 212. Therefore, in order to prevent the skin nail 300 from being squeezed forward and slipping off the saddle portion 212, resulting in difficulty in operation and removal, a front limit portion 214 needs to be provided at the front end of the nailing position 2101 to assist in the stable limiting of the skin nail 300 during removal.

[0056] Specifically, the skin anchor 200 needs to ensure that it can be stably arranged on the skin around the wound, and usually requires more than one fixing method. One fixing method is that the puncture needle 230 carried by the skin anchor 200 itself is pressed into the skin; the second fixing method is generally a secondary reinforcement fixation of the skin nail 300. The skin nail 300 includes a connecting portion and nail feet integrally arranged on both sides of the connecting portion, and the nail feet are perpendicular to the connecting portion; the skin nail 300 passes through the nailing device from the original state so that the two nail feet can puncture the skin and bend relatively after passing through the nailing positions 2101 located on both sides of the base plate 210, and then converted to a fixed state, and the bending part is used for buckling and fixing the skin. However, in some special parts, when the skin anchor 200 is laid at a position where it is inconvenient or unsuitable to fix the skin nail 300, sutures can be used to fix the skin anchor 200 for secondary reinforcement. Specifically, a suture hole 2102 is opened on the base plate 210. The suture hole 2102 is used to pass the suture, and the skin anchor 200 can be stably fixed at the puncture accommodation position 110 through the suture. Exemplarily, the suture hole 2102 can be set as a round hole or a waist hole, and a personalized selection is made according to the specific size and shape of the base plate 210, so that the application range of the skin stretching and fixing device can be expanded.

[0057] The skin stretching and fixing device provided by the present invention can be configured to use different skin anchors 200, transdermal patches 100 and skin staples 300 according to actual conditions, so as to reasonably expand the application scope of the stretching technique.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A skin stretching and fixing device, characterized in that: include: A transdermal patch (100), wherein at least one pair of the transdermal patches (100) are used to be relatively attached to the periphery of a wound, and the transdermal patch (100) is provided with a scale (101) on the side close to the wound, so as to measure the size of the wound; the transdermal patch (100) is provided with a plurality of puncture accommodating positions (110), and two adjacent puncture accommodating positions (110) are arranged at a preset distance, and the transdermal patch (100) is provided with puncture point marks (102) on both sides of the puncture accommodating positions (110); A skin anchor (200), the skin anchor (200) comprising an integrally arranged base plate (210), an anchor hook (220) and a puncture needle (230), the anchor hook (220) being used for winding a pulling wire; the base plate (210) being used for fitting with the skin, the base plate (210) being provided with a nailing position (2101); the angle between the puncture needle (230) and the base plate (210) being in the range of 45° to 70°; the puncture needle (230) being able to align with the puncture point mark (102) and obliquely puncture into the skin in a direction close to the wound so that the base plate (210) abuts against the skin, and the skin anchor (200) being embedded in the puncture receiving position (110); A skin nail (300), when the base plate (210) is in contact with the skin, a portion of the skin nail (300) passes through the nailing position (2101) and pierces the skin so that the skin nail (300) can be engaged with the skin anchor (200) and the skin; A saddle portion (212) is provided in the middle of the base plate (210), and when the two ends of the base plate (210) abut against the skin, the saddle portion (212) is spaced apart from the skin, or a compensating flange (211) is vertically protruded on the outer periphery of the nailing position (2101) on the base plate (210), and the leather nail (300) abuts against the compensating flange (211).

2. The skin stretching and fixing device according to claim 1, characterized in that: The two puncture needles (230) are symmetrically arranged on both sides of the substrate (210), and a beveled blade surface (2301) is arranged on one side of the puncture needle (230) to form a puncture tip (231). The two beveled blade surfaces (2301) are symmetrically arranged, and the puncture needle (230) is deformed in the opposite direction of the inclination direction of the beveled blade surface (2301) so that the puncture needle (230) punctures the skin along the midline direction of the puncture tip (231).

3. The skin stretching and fixing device according to claim 1, characterized in that: The skin anchor (200) comprises a rubber sleeve (240), wherein the rubber sleeve (240) is sleeved on the outside of the anchor hook (220) and wrapped around the side of the anchor hook (220) in contact with the pulling wire.

4. The skin stretching and fixing device according to claim 1, characterized in that: The inner side edge of the anchor hook (220) in contact with the pulling wire is configured as a rolled fillet.

5. The skin stretching and fixing device according to claim 1, characterized in that: The anchor hook (220) is connected to the head of the base plate (210), and the anchor hook (220) is bent upward so that the opening of the anchor hook (220) faces the tail of the base plate (210), and an elastic protrusion portion (2201) is provided at an initial distance between the anchor hook (220) and the upper surface of the base plate (210); the skin stretching and fixing device also includes a wire bridge tube (400), the initial distance is less than the tube wall thickness of the wire bridge tube (400), and the wire bridge tube (400) can be inserted and clamped between the elastic protrusion portion (2201) and the base plate (210).

6. The skin stretching and fixing device according to claim 1, characterized in that: The compensating flange (211) is provided with a rear limiting portion (213) at one end away from the wound, and the rear limiting portion (213) can prevent the leather nail (300) and the compensating flange (211) from slipping off.

7. The skin stretching and fixing device according to any one of claims 1 to 6, characterized in that: The base plate (210) is provided with a suture hole (2102), and the suture hole (2102) is used for inserting a suture, and the skin anchor (200) can be fixed to the puncture receiving position (110) through the suture.

8. The skin stretching and fixing device according to any one of claims 1 to 6, characterized in that: The contact surface of the transdermal patch (100) with the skin is provided with a sustained-release drug.

9. The skin stretching and fixing device according to any one of claims 1 to 6, characterized in that: The puncture accommodation position (110) is divided into a single accommodation position (111) and a double accommodation position (112). The transdermal patch (100) is provided with a center mark (103) at the front end of the single accommodation position (111). The center mark (103) is used to align with the symmetry center of the skin anchor (200) so that the skin anchor (200) is embedded in the single accommodation position (111). The transdermal patch (100) is provided with two centering marks (103) at intervals at the front end of the double accommodation position (112), and the symmetry center of the skin anchor (200) is selectively aligned with one of the centering marks (103) so that the skin anchor (200) is embedded in the double accommodation position (112).

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