Surgical incision scar prevention device and method

Abstract

The application belongs to the technical field of medical supplies, and particularly relates to a surgical incision scar prevention device and method. In view of the problem that the existing surgical incision scar prevention device has poor effect when dealing with a long surgical incision, the following scheme is proposed, which comprises a tension end plate, the outer part of the tension end plate is provided with a fixed end plate, the bottom of the tension end plate and the fixed end plate is provided with medical double-sided adhesive tape one, a connecting pipe is arranged between the tension end plate and the fixed end plate, and the outer part of the connecting pipe is provided with a plurality of equidistantly distributed tension lines. The surgical incision scar prevention device and method can realize the lengthening and expansion of the device, improve the adaptability of the device to a long surgical incision in a whole formation mode on the basis of the main body, make the tension reduction effect of the device on the incision uniform and effective, improve the closure effect of the incision, and significantly improve the prevention ability of the device to the incision scar.

Description

Technical Field

[0001] This invention relates to the field of medical supplies technology, and in particular to a device and method for preventing surgical incision scars. Background Technology

[0002] Surgical scars are an inevitable result of wound healing, but they can be significantly improved through comprehensive management. The core prevention lies in reducing tension throughout the entire process, strictly protecting against sun exposure, and using silicone products. Scars are classified into normal, hyperplastic, atrophic, and nodular types. Treatment requires professional evaluation and should be carried out in stages: from basic care to injections and lasers. Severe cases may require surgery combined with radiotherapy. Early intervention and persistence are key to achieving the best results.

[0003] Surgical incision scar prevention devices typically prevent scarring by reducing tension on the surgical incision. However, due to the limited size of existing scar prevention devices, multiple devices need to be installed sequentially on a single incision when dealing with longer surgical incisions. These devices are mutually exclusive, and errors in setting the tension on the incision result in significant differences in wound healing, poor healing outcomes, and a high likelihood of scarring at the surgical incision site. Summary of the Invention

[0004] This invention discloses a surgical incision scar prevention device and method, aiming to solve the technical problem that existing surgical incision scar prevention devices are ineffective when dealing with long surgical incisions.

[0005] This invention proposes a surgical incision scar prevention device, comprising a tension end plate, a fixed end plate externally disposed on the tension end plate, medical double-sided tape being disposed at the bottom of both the tension end plate and the fixed end plate, a connecting tube being disposed between the tension end plate and the fixed end plate, a plurality of tension wires being disposed externally on the connecting tube, the ends of the tension wires away from the connecting tube being located above the tension end plate, a traction wire being disposed externally on the connecting tube, the end of the traction wire away from the connecting tube being located above the fixed end plate, and the same adaptive expansion module being disposed externally on the tension end plate and the fixed end plate, and a limit anti-deviation module being disposed externally on the connecting tube, the adaptive expansion module comprising two expansion end plates, the expansion end plates being disposed externally on the tension end plate and the fixed end plate respectively, a connecting seat being fixedly connected to the upper side of each expansion end plate, a connecting wire being fixedly connected to the outside of the connecting seat being on the same side as the tension end plate, a telescopic rod being disposed inside the connecting tube, and the end of the connecting wire away from the connecting seat being wrapped around the outside of the telescopic rod.

[0006] In a preferred embodiment, the tensioning end plate, the fixed end plate, and the expansion end plate are all provided with slots on their exteriors. Connecting members are fixedly connected to the exterior of the expansion end plate, and the exteriors of the connecting members are inserted into the inner walls of the slots on the tensioning and fixed end plates. Connecting seats two are fixedly connected to the upper sides of both the tensioning and fixed end plates. Circular grooves are provided on the same side of connecting seats two and connecting seats one, and springs are fixedly connected within these grooves. A pin is fixedly connected to the end of each spring away from the circular groove, and the exterior of the pin is slidably connected to the inner wall of the circular groove. Furthermore, fitting grooves are provided on the opposite sides of connecting seats one and two, and the inner walls of these fitting grooves are connected to the upper walls of connecting seats two. The external insertion of the pin is provided. Medical double-sided adhesive is provided at the bottom of both expansion end plates. The two ends of the tension wire are fixedly connected to the outside of the connecting tube and the outside of the connecting seat on the same side, respectively. An inner sleeve is movably connected to the inner wall of the connecting tube. A knob is fixedly connected to one side of the inner sleeve. A threaded groove is provided on the inner wall of the inner sleeve, and the telescopic rod is located within the threaded groove. An external thread is provided at the end of the telescopic rod near the knob, and the outside of the external thread fits against the inner wall of the threaded groove. Multiple equally spaced slots are provided on the outside of the telescopic rod. The inner wall of one slot engages with the outside of the connecting wire, and a sliding groove is provided on the outside of the telescopic rod, allowing it to slide within the groove. A guide block is connected, with its outer side fixedly connected to the side opposite to the inner wall of the connecting pipe. A sliding groove is fixedly connected to the outside of the connecting pipe, and a movable block is slidably connected within the sliding groove. The outer side of the movable block is fixedly connected to the end of the traction line away from the fixed end plate. A rectangular groove is formed on the second connecting seat on the same side as the fixed end plate, and the inner wall of the rectangular groove is slidably connected to the outer side of the traction line. An extension plate is fixedly connected to the upper side of the fixed end plate, located on the side of the second connecting seat on the fixed end plate away from the connecting pipe. A movable stage is slidably connected to the outside of the extension plate, and a slot is formed on the movable stage. A round rod is movably connected within the slot, and the outer side of the round rod... A winding roller is fixedly connected to the main body, and the end of the traction line away from the connecting tube is fixedly connected to the outside of the winding roller; a handle is fixedly connected to the upper side of the round rod; two symmetrical holes are opened on the upper side of the moving platform, and fixing bolts are provided in each hole. The bottom of the fixing bolts contacts the upper side of the extension plate, and a helical gear is fixedly connected to the outside of the round rod; a thin rod is fixedly connected to the upper side of the moving platform, and a locking buckle is movably connected to the outside of the thin rod. The outside of the locking buckle is engaged with the outside of the helical gear; a coil spring is fixedly connected to the outside of the thin rod, and a constraint ring is fixedly connected to the end of the coil spring away from the thin rod. The bottom of the constraint ring is fixedly connected to the upper side of the locking buckle.

[0007] In a preferred embodiment, the limiting and anti-deviation module includes a flat-mouth gear. The inner wall of the flat-mouth gear is fixedly connected to the outside of the knob. A mounting plate is movably connected to the side of the flat-mouth gear near the connecting tube, and the outside of the mounting plate is fixedly connected to the side opposite to the connecting tube. Two symmetrical slide rails are fixedly connected to the side of the mounting plate near the knob. The same locking rack is slidably connected within the two slide rails. The outside of the locking rack is engaged with the outside of the flat-mouth gear. Both slide rails have grooves. A limiting rod is movably connected to the inner wall of one of the grooves. The outside of the limiting rod is fitted into the inner wall of the groove on the other slide rail, and the outside of the limiting rod is engaged with the outside of the locking rack.

[0008] A method for preventing surgical incision scars, using a surgical incision scar prevention device as described above, includes the following steps:

[0009] Step 1: Before installing the device, measure the length of the surgical incision. Based on the length of the incision, connect an appropriate number of extension end plates to the tension end plates and the fixed end plates.

[0010] Step 2: Remove the protective film from medical double-sided tape 1 and medical double-sided tape 2, and then stick medical double-sided tape 2 and medical double-sided tape 1 to the skin on both sides of the incision.

[0011] Step 3: Use the adaptive expansion module to tighten the tension wire and connecting wire, and adjust the slit tension;

[0012] Step 4: After adjustment, use the limit and anti-deviation module to lock the position of the telescopic rod in the connecting pipe.

[0013] As can be seen from the above, the surgical incision scar prevention device provided by the present invention can extend and expand the length of the device, so that the device can be integrated into a whole based on the main body, thereby improving the adaptability of the device to longer surgical incisions, making the tension reduction effect of the device on the incision uniform and effective, improving the closure effect of the incision, and significantly improving the device's ability to prevent surgical scars. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a surgical incision scar prevention device proposed in this invention;

[0015] Figure 2 This is a top view schematic diagram of a surgical incision scar prevention device proposed in this invention;

[0016] Figure 3 This is a schematic diagram of the extended end plate structure of a surgical incision scar prevention device proposed in this invention;

[0017] Figure 4This is a schematic diagram of the connecting tube structure of a surgical incision scar prevention device proposed in this invention;

[0018] Figure 5 This is a schematic diagram of the connecting seat two of the surgical incision scar prevention device proposed in this invention;

[0019] Figure 6 This is a schematic diagram of the moving platform structure of a surgical incision scar prevention device proposed in this invention;

[0020] Figure 7 This is a schematic diagram of the limiting and anti-deviation module structure of a surgical incision scar prevention device proposed in this invention.

[0021] In the diagram: 1. Tensioning end plate; 2. Fixed end plate; 3. Connecting pipe; 4. Tensioning wire; 5. Traction wire; 6. Medical double-sided tape I; 7. Adaptive expansion module; 701. Expansion end plate; 702. Connector; 703. Socket; 704. Medical double-sided tape II; 705. Connecting seat I; 706. Connecting seat II; 707. Fitting groove; 708. Connecting wire; 709. Spring; 710. Pin; 711. Inner sleeve; 712. Knob; 713. Threaded groove; 714. Telescopic rod; 715. 716. External thread; 717. Slide groove; 718. Guide block; 719. Slot; 720. Sliding groove; 721. Movable block; 722. Rectangular groove; 723. Extension plate; 724. Moving table; 725. Winding roller; 726. Helical gear; 727. Locking buckle; 728. Constraint ring; 729. Coil spring; 730. Handle; 740. Fixing bolt; 85. Limiting and anti-deviation module; 801. Mounting plate; 802. Flat gear; 803. Slide rail; 804. Locking rack; 805. Limiting rod. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] The surgical incision scar prevention device disclosed in this invention is mainly applied to scenarios where existing surgical incision scar prevention devices are less effective in dealing with longer surgical incisions.

[0024] Reference Figures 1-7A surgical incision scar prevention device includes a tension end plate 1, a fixed end plate 2 disposed on the outside of the tension end plate 1, medical double-sided adhesive tape 6 disposed on the bottom of both the tension end plate 1 and the fixed end plate 2, a connecting tube 3 disposed between the tension end plate 1 and the fixed end plate 2, a plurality of tension wires 4 evenly distributed on the outside of the connecting tube 3, the ends of the tension wires 4 away from the connecting tube 3 being located above the tension end plate 1, a traction wire 5 disposed on the outside of the connecting tube 3, the end of the traction wire 5 away from the connecting tube 3 being located above the fixed end plate 2, and the outer ends of the tension end plate 1 and the fixed end plate 2... The unit is equipped with the same adaptive expansion module 7. The external part of the connecting pipe 3 is equipped with a limit anti-deviation module 8. The adaptive expansion module 7 includes two expansion end plates 701. The expansion end plates 701 are respectively set outside the tensioning end plate 1 and the fixed end plate 2. The upper side of the expansion end plates 701 is connected to the connecting seat 705 by bolts. The external part of the connecting seat 705 on the same side as the tensioning end plate 1 is connected to the connecting line 708 by bolts. The connecting pipe 3 is equipped with a telescopic rod 714, and the end of the connecting line 708 away from the connecting seat 705 is wrapped around the outside of the telescopic rod 714.

[0025] Specifically, the device utilizes the adaptive extension module 7 to extend and expand the length of the device, thereby improving its adaptability to longer surgical incisions by forming a whole based on the main body. This makes the device's tension-reducing effect on the incision uniform and effective, improves the incision closure effect, and significantly enhances the device's ability to prevent incision scars.

[0026] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6In a preferred embodiment, the tensioning end plate 1, the fixed end plate 2, and the extension end plate 701 are all provided with slots 703 on their exteriors. The extension end plate 701 is bolted to the exterior of each connector 702, the exterior of which is inserted into the inner wall of the slots 703 on the tensioning end plate 1 and the fixed end plate 2. The upper sides of the tensioning end plate 1 and the fixed end plate 2 are bolted to the upper side of each connector 706. Both connector 706 and connector 705 have circular grooves on the same side. Springs 709 are bolted into these grooves. A pin 710 is bolted to the end of each spring 709 away from the circular groove. The exterior of the pin 710 is inserted into the circular groove. The wall is slidably connected, and each of the opposite sides of the connecting seat 1 705 and the connecting seat 2 706 is provided with a fitting groove 707. The inner wall of the fitting groove 707 is inserted into the outside of the pin 710 on the connecting seat 2 706. The bottom of each of the two extension end plates 701 is provided with medical double-sided tape 2 704. The two ends of the tension wire 4 are respectively bolted to the outside of the connecting tube 3 and the outside of the connecting seat 2 706 on the same side. The inner wall of the connecting tube 3 is rotatably connected to the inner sleeve 711 through a bearing. One side of the inner sleeve 711 is bolted to a knob 712. The inner wall of the inner sleeve 711 is provided with a threaded groove 713, and the telescopic rod 714 is located in the threaded groove 713. The end of 714 near the knob 712 is provided with an external thread 715, the outer side of which fits against the inner wall of the thread groove 713; the telescopic rod 714 is provided with multiple equally spaced slots 718 on its outer side, the inner wall of one of the slots 718 engaging with the outer side of the connecting line 708, and the telescopic rod 714 is provided with a sliding groove 716 on its outer side, a guide block 717 is slidably connected in the sliding groove 716, and the outer side of the guide block 717 is bolted to the side opposite to the inner wall of the connecting pipe 3; the connecting pipe 3 is bolted to a sliding groove 719, a movable block 720 is slidably connected in the sliding groove 719, and the outer side of the movable block 720 is away from the traction line 5. One end of the fixed end plate 2 is connected by bolts, and a rectangular groove 721 is provided on the connecting seat 706 on the same side as the fixed end plate 2. The inner wall of the rectangular groove 721 is slidably connected to the outside of the traction line 5. An extension plate 722 is connected to the upper side of the fixed end plate 2 by bolts. The extension plate 722 is located on the side of the connecting seat 706 on the fixed end plate 2 away from the connecting pipe 3. A movable table 723 is slidably connected to the outside of the extension plate 722. A slot is provided on the movable table 723. A round rod is rotatably connected to the slot through a bearing. A winding roller 724 is bolted to the outside of the round rod, and the end of the traction line 5 away from the connecting pipe 3 is bolted to the outside of the winding roller 724.A handle 729 is bolted to the upper side of the round rod. Two symmetrical openings are formed on the upper side of the moving platform 723, each containing a fixing bolt 730. The bottom of each fixing bolt 730 contacts the upper side of the extension plate 722. A helical gear 725 is bolted to the outside of the round rod. A thin rod is bolted to the upper side of the moving platform 723. A locking buckle 726 is rotatably connected to the outside of the thin rod via a bearing. The outside of the locking buckle 726 engages with the outside of the helical gear 725. A coil spring 728 is bolted to the outside of the thin rod. A constraint ring 727 is bolted to the end of the coil spring 728 furthest from the thin rod. The bottom of the constraint ring 727 is bolted to the upper side of the locking buckle 726.

[0027] In specific application scenarios, the adaptive expansion module 7 is mainly applicable to the adaptive expansion stage in the adaptive expansion process. Specifically, the adaptive expansion module 7, utilizing the expansion end plate 701, medical double-sided tape 704, connecting wire 708, and telescopic rod 714, can extend the length and function of the device based on its original structure. This allows the device to adapt to more complex incisions, improving its adaptability. Using the connector 702, socket 703, pin 710, and expansion end plate 701, after the expansion end plate 701 is connected to the device body, it restricts the relative position of the expansion end plate 701 with the tension end plate 1 or fixed end plate 2, reducing the offset of the expansion end plate 701, thus enabling the device to adapt to more complex incisions. During tension reduction, the tensioning end plate 1, the fixed end plate 2, and the expansion end plate 701 can all be subjected to uniform force, thereby ensuring uniform force on the cut during tension reduction and improving the healing effect of the cut. With the help of the external thread 715, telescopic rod 714, slot 718, sliding groove 719, movable block 720, extension plate 722, and moving table 723, the force application point of the device during tension reduction can be quickly and conveniently adjusted when the device is expanded, thereby further ensuring uniform force on the cut. The winding roller 724, helical gear 725, and locking buckle 726 can ensure that the winding roller 724 will not rotate during the tension reduction of the cut, thereby effectively controlling the tension reduction force to remain unchanged and improving the stability of the device.

[0028] Reference Figure 7In a preferred embodiment, the limiting and anti-deviation module 8 includes a flat-mouth gear 802. The inner wall of the flat-mouth gear 802 is bolted to the outside of the knob 712. A mounting plate 801 is rotatably connected to the side of the flat-mouth gear 802 near the connecting pipe 3 via a bearing. The outside of the mounting plate 801 is bolted to the side opposite to the connecting pipe 3. Two symmetrical slide rails 803 are bolted to the side of the mounting plate 801 near the knob 712. The same locking rack 804 is slidably connected within the two slide rails 803. The outside of the locking rack 804 engages with the outside of the flat-mouth gear 802. Both slide rails 803 have slots. A limiting rod 805 is rotatably connected to the inner wall of one of the slots via a bearing. The outside of the limiting rod 805 fits into the inner wall of the slot on the other slide rail 803. The outside of the limiting rod 805 engages with the outside of the locking rack 804.

[0029] In specific application scenarios, the limit and anti-deviation module 8 is mainly used in the limit and anti-deviation process. That is, the limit and anti-deviation module 8 uses a flat gear 802, a locking rack 804 and a limit rod 805 to enable the device to control the rotation of the knob 712 connected to the inner sleeve 711. Thus, after the connecting line 708 is hung on the telescopic rod 714, the telescopic rod 714 will not extend or deviate in the inner sleeve 711 due to accidental impact or force. This ensures that the connecting line 708 can always remain perpendicular to the telescopic rod 714 and parallel to the tension line 4, thereby ensuring that the overall force does not change and reducing the possibility of the cut being misaligned due to force.

[0030] A method for preventing surgical incision scars, using a surgical incision scar prevention device as described above, includes the following steps:

[0031] Step 1: Before installing the device, measure the length of the surgical incision. Based on the length of the incision, connect an appropriate number of extension end plates 701 to the tension end plate 1 and the fixed end plate 2.

[0032] Step 2: Remove the protective film from medical double-sided tape 16 and medical double-sided tape 2704, and then stick medical double-sided tape 2704 and medical double-sided tape 16 to the skin on both sides of the incision.

[0033] Step 3: Use the adaptive extension module 7 to tighten the tension wire 4 and the connecting wire 708, and adjust the incision tension. (Before installing the device, measure the length of the surgical incision. Based on the incision length, connect an appropriate number of extension end plates 701 to the tension end plate 1 and the fixed end plate 2. Remove the protective film from the medical double-sided tape 6 and medical double-sided tape 704. Attach the medical double-sided tape 704 and medical double-sided tape 6 to the skin on both sides of the incision. Ensure that the connector 702 is fully inserted into the socket 703, and the pin 710 is inserted into the fitting groove 707 under the push of the spring 709. Turn the knob 712, which drives the inner sleeve 711 to rotate, causing the external thread 715 to push the telescopic rod 714 out of the connecting tube 3 in the thread groove 713. Hang the connecting wire 708 in the slot 718 and loosen the fixing bolt 7.) 30. Allow the moving table 723 to slide on the extension plate 722. Adjust the position of the movable block 720 in the sliding groove 719 so that the movable block 720 is located at the midpoint of the integral formed by the extended end of the connecting pipe 3 and the telescopic rod 714. After ensuring that the traction line 5 is perpendicular to the connecting pipe 3, tighten the fixing bolt 730. Overcome the torque of the coil spring 728 and pry open the locking buckle 726 so that the locking buckle 726 releases the lock on the helical gear 725. Turn the handle 729. The handle 729 drives the winding roller 724 to rotate, thereby winding the traction line 5. This causes the connecting pipe 3 to pull the tension end plate 1 connected to the tension line 4 toward the fixed end plate 2, completing the tension reduction at the cut position. After completion, release the locking buckle 726. Under the torque of the coil spring 728, the locking buckle 726 locks the helical gear 725 again, and the winding roller 724 no longer rotates.

[0034] Step 4: After adjustment, use the limit anti-deviation module 8 to lock the position of the telescopic rod 714 in the connecting tube 3. (After extending the telescopic rod 714 out of the connecting tube 3, gently push the locking rack 804 to make it move down and engage with the flat gear 802. Rotate the limit rod 805 to press it into the groove on the slide rail 803. Ensure that the contact surfaces of the limit rod 805 and the locking rack 804 are fully engaged. Then release the limit rod 805. At this time, the flat gear 802 cannot rotate, thus locking the knob 712 in this position.)

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A surgical incision scar prevention device comprising a tensioning end plate (1), characterized in that, The tensioning end plate (1) is externally provided with a fixed end plate (2). Medical double-sided tape (6) is provided at the bottom of both the tensioning end plate (1) and the fixed end plate (2). A connecting pipe (3) is provided between the tensioning end plate (1) and the fixed end plate (2). Multiple tensioning wires (4) are equidistantly distributed on the outside of the connecting pipe (3). The ends of the tensioning wires (4) furthest from the connecting pipe (3) are all located above the tensioning end plate (1). A traction wire (5) is provided on the outside of the connecting pipe (3). The end of the traction wire (5) furthest from the connecting pipe (3) is located above the fixed end plate (2). The tensioning end plate (1) and the fixed end plate (2) are externally provided with the same... An adaptive extension module (7) is provided on the outside of the connecting tube (3) with a limit anti-deviation module (8). The adaptive extension module (7) includes two extension end plates (701). The extension end plates (701) are respectively provided on the outside of the tension end plate (1) and the fixed end plate (2). A connecting seat (705) is fixedly connected to the upper side of each extension end plate (701). A connecting line (708) is fixedly connected to the outside of the connecting seat (705) on the same side as the tension end plate (1). A telescopic rod (714) is provided inside the connecting tube (3), and the end of the connecting line (708) away from the connecting seat (705) is wrapped around the outside of the telescopic rod (714). The tensioning end plate (1), the fixed end plate (2), and the extension end plate (701) are all provided with slots (703) on their exteriors. Connectors (702) are fixedly connected to the exterior of the extension end plate (701). The exterior of the connectors (702) is inserted into the inner walls of the slots (703) on the tensioning end plate (1) and the fixed end plate (2). Connecting seats (706) are fixedly connected to the upper sides of both the tensioning end plate (1) and the fixed end plate (2). Both the second connector (706) and the first connector (705) have circular grooves on the same side, and springs (709) are fixedly connected in the circular grooves. A pin (710) is fixedly connected to the end of each spring (709) away from the circular groove. The outer side of the pin (710) is slidably connected to the inner wall of the circular groove. Furthermore, a fitting groove (707) is provided on the opposite side of the first connector (705) and the second connector (706). The inner wall of the fitting groove (707) is flush with the inner wall of the second connector (706). The pin (710) on the 706 is inserted externally. The bottom of the two extension end plates (701) is provided with medical double-sided tape (704). The two ends of the tension wire (4) are fixedly connected to the outside of the connecting tube (3) and the outside of the connecting seat (706) on the same side. The outside of the connecting tube (3) is fixedly connected with a sliding groove (719). A movable block (720) is slidably connected in the sliding groove (719). The outside of the movable block (720) is fixedly connected to the end of the traction wire (5) away from the fixed end plate (2). A rectangular groove (721) is opened on the connecting seat (706) on the same side as the fixed end plate (2). The inner wall of the rectangular groove (721) is slidably connected to the outside of the traction wire (5). An extension plate (722) is fixedly connected to the upper side of the fixed end plate (2). The extension plate (722) is located on the side of the connecting seat (706) on the fixed end plate (2) away from the connecting tube (3).

2. The surgical incision scar prevention device of claim 1, wherein, The inner wall of the connecting pipe (3) is movably connected to an inner sleeve (711), and a knob (712) is fixedly connected to one side of the inner sleeve (711). The inner wall of the inner sleeve (711) is provided with a threaded groove (713), and the telescopic rod (714) is located in the threaded groove (713). The end of the telescopic rod (714) near the knob (712) is provided with an external thread (715), and the outside of the external thread (715) fits against the inner wall of the threaded groove (713).

3. A surgical incision scar prevention device according to claim 2, wherein, The telescopic rod (714) has multiple equally spaced slots (718) on its outside. The inner wall of one of the slots (718) is engaged with the outside of the connecting line (708). The telescopic rod (714) has a sliding groove (716) on its outside. A guide block (717) is slidably connected in the sliding groove (716). The outside of the guide block (717) is fixedly connected to the side opposite to the inner wall of the connecting pipe (3).

4. A surgical incision scar prevention device according to claim 3, wherein, The extension plate (722) is slidably connected to a movable platform (723). The movable platform (723) has a slot, and a round rod is movably connected in the slot. A winding roller (724) is fixedly connected to the outside of the round rod, and the end of the traction line (5) away from the connecting pipe (3) is fixedly connected to the outside of the winding roller (724).

5. A surgical incision scar prevention device according to claim 4, wherein, A handle (729) is fixedly connected to the upper side of the round rod. Two symmetrical holes are opened on the upper side of the moving platform (723). Fixing bolts (730) are provided in each hole. The bottom of the fixing bolts (730) are in contact with the upper side of the extension plate (722). A helical gear (725) is fixedly connected to the outside of the round rod. A thin rod is fixedly connected to the upper side of the moving platform (723). A locking buckle (726) is movably connected to the outside of the thin rod. The outside of the locking buckle (726) is engaged with the outside of the helical gear (725). A coil spring (728) is fixedly connected to the outside of the thin rod. A constraint ring (727) is fixedly connected to the end of the coil spring (728) away from the thin rod. The bottom of the constraint ring (727) is fixedly connected to the upper side of the locking buckle (726).

6. A surgical incision scar prevention device according to claim 5, wherein, The limiting and anti-deviation module (8) includes a flat gear (802), the inner wall of the flat gear (802) is fixedly connected to the outside of the knob (712), and the side of the flat gear (802) near the connecting tube (3) is movably connected to the mounting plate (801), and the outside of the mounting plate (801) is fixedly connected to the side opposite to the connecting tube (3).

7. A surgical incision scar prevention device according to claim 6, wherein, The mounting plate (801) is fixedly connected to two symmetrical slide rails (803) on the side near the knob (712). The same locking rack (804) is slidably connected in the two slide rails (803). The outside of the locking rack (804) is engaged with the outside of the flat gear (802). Both slide rails (803) are provided with grooves. A limit rod (805) is movably connected to the inner wall of one of the grooves. The outside of the limit rod (805) is fitted with the inner wall of the groove on the other slide rail (803). The outside of the limit rod (805) is engaged with the outside of the locking rack (804).

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