Novel combined double-line skin stretching device

Abstract

The invention provides a novel combined double-thread skin stretching device which comprises a plurality of grooved kirschner wires sequentially penetrating into corium layers of to-be-sewn skin on two sides, first stretching devices are fixed to the two outer side ends of the grooved kirschner wires respectively, first sutures are further arranged in the corium layers, the ends of the first sutures are installed in the first stretching devices, and the first sutures are connected with the first stretching devices. A second suture line is further arranged at the position 5 mm away from the skin edge, the two tail ends of the second suture line are arranged on the outer side of the skin respectively, the two ends of the second suture line are connected into the second distractor respectively, and double-line skin distracting operation is completed through cooperation of the first suture line and the first distractor and cooperation of the second suture line and the second distractor. The device can be used for regular skin defect wounds and irregular skin defect wounds, the treatment cost and the hospitalization time of patients can be obviously reduced, secondary injuries caused by conventional treatment such as skin taking, skin grafting and skin flaps are avoided, the wounds after healing are more attractive, and the device is convenient and practical.

Description

Technical Field

[0001] The invention belongs to the technical field of skin stretching devices, and in particular relates to a novel combined double-line skin stretching device. Background Art

[0002] At present, a large number of patients with skin defects caused by various reasons can be seen in clinical practice, and the shape of the skin defects is irregular. Two surgical plans are designed according to the skin defect conditions:

[0003] 1) Simple sutures combined with tighteners are used to suture the skin in full thickness 1-1.5 cm away from the skin edge. The sutures are appropriately tightened after suturing to complete the surgical treatment. There is no secondary damage to the skin and flaps. The appearance is more beautiful after healing, and only a linear scar remains after repair.

[0004] 2) Sutures combined with Kirschner wires and strapping tapes are used to stretch the skin. The skin tension of such patients is high, and using sutures alone can easily cut the skin and cause surgical failure. Therefore, Kirschner wires are used to disperse the cutting force of sutures. This method is suitable for skin defects with irregular wound surfaces. It is extremely simple to operate, inexpensive, and has good clinical effects. It does not require secondary suturing and does not cause secondary damage.

[0005] Based on this, a new combined double-wire skin stretching device was proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a novel combined double-wire skin stretching device to solve the problems raised in the above-mentioned background technology in view of the deficiencies of the above-mentioned prior art.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a novel combined double-line skin stretching device, comprising a plurality of slotted Kirschner wires sequentially inserted into the dermis of the skin on both sides to be sutured, the slotted Kirschner wires are 10 mm away from the skin edge of the skin to be sutured, and the outer ends of the slotted Kirschner wires are arranged on the outside of the skin, and first stretchers are respectively fixed on the two outer ends of the slotted Kirschner wires, a first suture is also arranged along the slotted Kirschner wires in the dermis, the two ends of the first suture are respectively arranged on the outside of the skin, and the ends of the first suture are installed in the opposite first stretchers;

[0008] A second suture is also arranged 5 mm away from the skin edge of the dermis layer of the skin to be sutured, and the two ends of the second suture are also respectively arranged on the outside of the skin, and the two ends of the second suture are respectively connected to the second stretcher, and the double-line skin stretching operation is completed through the cooperation of the first suture and the first stretcher and the second suture and the second stretcher.

[0009] As a further illustration of the present invention, the diameter of the first suture is greater than the diameter of the second suture.

[0010] As a further explanation of the present invention, the first tensioner includes a circular cavity, a connecting seat, an intermediate wheel, ratchet teeth, a suture roller and a pawl. A connecting seat is fixed to the outside of the circular cavity, and the connecting seat is installed on the outer end of the slotted Kirschner wire. An intermediate wheel is rotatably connected in the circular cavity, and a plurality of ratchet teeth are arranged at equal intervals on the circumferential outside of the intermediate wheel. A pawl that cooperates with the ratchet teeth is also movably installed in the circular cavity. A suture roller is fixed radially of the intermediate wheel, and the end of the first suture is fixed on the suture roller after passing through the side opening of the circular cavity.

[0011] As a further description of the present invention, the rotating shaft of the intermediate wheel extends to the outside of the circular cavity, and an operating knob is fixed to the extended end of the rotating shaft, and the intermediate wheel can be driven to rotate by the operating knob.

[0012] As a further explanation of the present invention, the second tensioner includes a rectangular cavity plate and a suture connection seat, the rectangular cavity plate is provided with two parallel middle cavities, the outer side of the middle cavity is provided with an oblong connecting groove, each of the middle cavities is slidably connected with a suture connection seat, the suture connection seat is provided with a suture through groove, the suture through groove is used for the end of the second suture to pass through, the outer side of the suture connection seat is also threadedly connected with a suture fixing pin, the inner end of the suture fixing pin is abutted against the suture through groove to complete the fixation of the second suture in the suture connection seat.

[0013] As a further explanation of the present invention, a plurality of pin holes are evenly spaced in the middle cavity, a pin hole is also provided on the suture connection seat, and the pin hole of the middle cavity is connected to the pin hole of the connection seat by a threaded pin.

[0014] As a further illustration of the present invention, the suture connection seat is slidably connected in the connecting groove, and a rubber anti-slip pad is provided at the inner end of the suture connection seat.

[0015] As a further description of the present invention, it is characterized in that the suture through-groove is a through-channel which is trumpet-shaped at both ends and narrow in the middle.

[0016] As a further illustration of the present invention, the spacing between adjacent grooved Kirschner wires is set at 15-20 mm.

[0017] As a further illustration of the present invention, a silicone protective pad is arranged on the second suture near the second distractor, and the tail end of the silicone protective pad is against the skin.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The present invention sequentially inserts a plurality of slotted Kirschner wires into the dermis of the skin on both sides to be sutured, wherein the outer ends of the slotted Kirschner wires are arranged on the outer side of the skin, and first stretchers are respectively fixed to the two outer ends of the slotted Kirschner wires, and a first suture is also arranged along the slotted Kirschner wires in the dermis, wherein the two ends of the first suture are respectively arranged on the outer side of the skin, and the ends of the first suture are installed in the opposite first stretchers, and the first stretcher comprises a circular cavity, a connecting seat, an intermediate wheel, ratchet teeth, a suture roller and a pawl. When the operating knob is rotated clockwise, the intermediate wheel and the suture roller can be driven to rotate clockwise, thereby driving the tightening and stretching operation of the first suture. When the first suture needs to be loosened, the pawl is first driven to disengage from the ratchet teeth by an external screwdriver so that the intermediate wheel can rotate freely, and then the operating knob is rotated in the reverse direction to loosen the first suture.

[0020] 2. The present invention further provides a second suture at a distance of 5 mm from the edge of the dermis layer of the skin to be sutured, and the two ends of the second suture are also respectively provided on the outside of the skin, and the two ends of the second suture are respectively connected to the second distractor, the second distractor comprises a rectangular cavity plate and a suture connection seat, two parallel middle cavities are provided in the rectangular cavity plate, an oblong connecting groove is provided on the outside of the middle cavity, a suture connection seat is slidably connected in each middle cavity, a suture through groove is provided on the suture connection seat, the suture through groove is a through channel with trumpet-shaped ends and a narrow middle, the suture through groove is used for the second suture end to pass through, a suture fixing pin is also threadedly connected to the outside of the suture connection seat, and the suture connection seat is slidably connected to the suture fixing pin. The suture connection seat is connected in the connecting groove, which improves the stability of the suture fixing pin during use, and a rubber anti-skid pad is provided at the inner end of the suture connection seat. The rubber anti-skid pad can improve the stability of the suture connection seat in squeezing and fixing the second suture during use. The inner end of the suture fixing pin is against the suture through-groove to complete the fixation of the second suture in the suture connection seat. A plurality of pin shaft through holes are also arranged at equal intervals in the middle cavity, and a pin shaft through hole is also provided on the suture connection seat. The pin shaft through hole of the middle cavity is connected to the pin shaft through hole of the connection seat by a threaded pin, so that the suture connection seat in different length directions can be fixed by selecting the connection between the suture connection seat and the pin shaft through holes at different positions, thereby completing the adjustment of the tightness of the second suture.

[0021] 3. The present invention can gradually tighten the first and second stretchers according to the skin tightness and the patient's tolerance to pain during postoperative dressing changes. If the stretchers are over-tightened, the first and second stretchers can be adjusted to loosen the sutures. The skin is brought together and the grooved Kirschner wires are removed the day after, and then the second sutures are removed. The present invention can be used for both regular and irregular skin defect wounds, which can significantly reduce the patient's treatment costs and hospitalization time, avoid secondary injuries caused by conventional treatments such as skin grafting and skin flaps, and make the wound more beautiful, convenient and practical after healing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention in use state;

[0023] Figure 2 It is a schematic diagram of the internal structure of the first distractor of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal structure of the second distractor of the present invention.

[0025] Description of reference numerals:

[0026] 1-dermis; 2-Kirschner wire with groove; 3-first distractor; 31-circular cavity; 32-connecting seat; 33-middle wheel; 34-ratchet tooth; 35-suture roller; 36-pawl; 37-operating knob; 4-first suture; 5-second suture; 6-second distractor; 61-rectangular cavity plate; 62-middle cavity; 63-connecting groove; 64-suture connecting seat; 65-suture through groove; 66-suture fixing pin; 67-pin shaft through hole; 7-silicone protective pad. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1-3 As shown, the present invention provides a technical solution: a novel combined double-line skin stretching device, comprising a plurality of grooved Kirschner wires 2 which are sequentially inserted into the dermis 1 of the skin on both sides to be sutured, the spacing between adjacent grooved Kirschner wires 2 is set at 15-20mm, and the grooved Kirschner wires 2 are 10mm away from the skin edge to be sutured.

[0029] The outer end of the grooved Kirschner wire 2 is arranged outside the skin, and first distractors 3 are respectively fixed to the two outer ends of the grooved Kirschner wire 2. A first suture 4 is also arranged along the grooved Kirschner wire 2 in the dermis 1. The two ends of the first suture 4 are respectively arranged outside the skin, and the ends of the first suture 4 are installed in the opposite first distractors 3.

[0030] Specifically, the first tensioner 3 includes a circular cavity 31, a connecting seat 32, an intermediate wheel 33, ratchet teeth 34, a suture roller 35 and a pawl 36. The connecting seat 32 is fixed to the outside of the circular cavity 31, and the connecting seat 32 is installed on the outer end of the slotted Kirschner wire 2. The intermediate wheel 33 is rotatably connected in the circular cavity 31, and a plurality of ratchet teeth 34 are arranged at equal intervals on the circumferential outside of the intermediate wheel 33. A pawl 36 that cooperates with the ratchet teeth 34 is also movably installed in the circular cavity 31. A suture roller 35 is fixed radially of the intermediate wheel 33, and the end of the first suture 4 is fixed on the suture roller 35 after passing through the side opening of the circular cavity 31, so that the first suture 4 can be tightened or loosened.

[0031] The shaft of the intermediate wheel 33 extends to the outside of the circular cavity 31, and an operating knob 37 is fixed to the extended end of the shaft. The operating knob 37 can drive the intermediate wheel 33 to rotate. Figure 2 As shown, when the operating knob 37 rotates clockwise, it can drive the intermediate wheel 33 and the suture roller 35 to rotate clockwise, thereby driving the tightening and tensioning operation of the first suture 4. When the first suture 4 needs to be loosened, first use an external screwdriver to drive the pawl 36 to disengage from the ratchet teeth 34, so that the intermediate wheel 33 can rotate freely, and then rotate the operating knob 37 in the opposite direction to loosen the first suture 4.

[0032] A second suture 5 is also provided 5 mm away from the skin edge of the dermis 1 to be sutured, and the two ends of the second suture 5 are also respectively provided on the outside of the skin, and the two ends of the second suture 5 are respectively connected to the second distractor 6;

[0033] The second tensioner 6 includes a rectangular cavity plate 61 and a suture connecting seat 64. The rectangular cavity plate 61 has two parallel middle cavities 62. The outer side of the middle cavity 62 is provided with an oblong connecting groove 63. Each of the middle cavities 62 is slidably connected with a suture connecting seat 64. The suture connecting seat 64 is provided with a suture through groove 65. The suture through groove 65 is a through channel with trumpet-shaped ends and a narrow middle. The suture through groove 65 is used for the end of the second suture 5 to pass through.

[0034] A suture fixing pin 66 is also threadedly connected to the outer side of the suture connection seat 64, and the suture connection seat 64 is slidably connected in the connecting groove 63, which improves the stability of the suture fixing pin 66 during use, and a rubber anti-skid pad is provided on the inner end of the suture connection seat 64. The rubber anti-skid pad can improve the stability of the suture connection seat 64 in squeezing and fixing the second suture 5 during use. After the inner end of the suture fixing pin 66 abuts against the suture through groove 65, the second suture 5 is fixed in the suture connection seat 64.

[0035] A plurality of pin holes 67 are also arranged at equal intervals in the middle cavity 62, and a pin hole 67 is also provided on the suture connecting seat 64. The pin hole 67 of the middle cavity 62 is connected to the pin hole 67 of the connecting seat 64 by a threaded pin, so that the suture connecting seat 64 can be fixed in different length directions by selecting the connection between the suture connecting seat 64 and the pin holes 67 at different positions, thereby adjusting the tightness of the second suture 5.

[0036] The double-line skin stretching operation can be completed through the cooperation of the first suture 4 and the first stretcher 3 as well as the second suture 5 and the second stretcher 6.

[0037] In order to facilitate the use, the diameter of the first suture 4 is greater than the diameter of the second suture 5 .

[0038] In order to prevent the middle section of the second suture 5 from causing squeezing damage to the outer side of the skin, a silicone protective pad 7 is provided on the second suture 5 near the second distractor 6, and the tail end of the silicone protective pad 7 is against the skin.

[0039] In summary, when using, first insert the grooved Kirschner wire 2 into the dermis 2 at a distance of 10 mm from the skin edge and parallel to the skin edge, and then use the first circular suture 4 with a needle to suture along the grooved Kirschner wire 2, so that the pulling force can be evenly applied to the grooved Kirschner wire 2. After suturing, the first suture 4 is appropriately tightened using the first distractor 3.

[0040] Then, a single second suture 5 with a needle is used for continuous suture at a distance of 5 mm from the skin edge, and the suture is connected to the second distractor 6 .

[0041] During the postoperative dressing change, the first stretcher 3 and the second stretcher 6 are gradually tightened according to the tightness of the skin and the patient's tolerance to pain. If they are over-tightened, the first stretcher 3 and the second stretcher 6 can be adjusted to loosen the sutures.

[0042] 7 days after skin apposition, the grooved Kirschner wire 2 is removed and the first suture 3 is naturally tied, and the second suture 5 is removed after 2 weeks;

[0043] If the wound edges heal well, the first suture 3 is removed after 3 days; if the wound edges heal poorly, the removal time of the thick suture can be appropriately extended to avoid the risk of cracking of the single second suture 5. This method can be used for both regular and irregular skin defect wounds, and can significantly reduce the patient's treatment costs and hospitalization time, avoid secondary injuries caused by conventional treatments such as skin grafting and skin flaps, and make the wound more beautiful after healing, which is convenient and practical.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel combined double-wire skin stretching device, characterized in that: The invention comprises a plurality of Kirschner wires (2) which are sequentially inserted into the dermis (1) of the skin on both sides to be sutured, wherein the Kirschner wires (2) are 10 mm away from the skin edge to be sutured, and the outer ends of the Kirschner wires (2) are arranged on the outside of the skin, and first distractors (3) are respectively fixed to the two outer ends of the Kirschner wires (2), and a first suture (4) is also arranged along the Kirschner wires (2) in the dermis (1), and the two ends of the first suture (4) are respectively arranged on the outside of the skin, and the ends of the first suture (4) are installed in the opposite first distractors (3); A second suture (5) is also arranged 5 mm away from the skin edge of the dermis layer (1) of the skin to be sutured, and the two ends of the second suture (5) are also arranged on the outside of the skin, and the two ends of the second suture (5) are respectively connected to the second stretcher (6). The double-line skin stretching operation is completed by the cooperation of the first suture (4) and the first stretcher (3) and the second suture (5) and the second stretcher (6).

2. A novel combined double-wire skin stretching device according to claim 1, characterized in that: The diameter of the first suture (4) is greater than the diameter of the second suture (5).

3. A novel combined double-wire skin stretching device according to claim 1, characterized in that: The first distractor (3) comprises a circular cavity (31), a connecting seat (32), an intermediate wheel (33), ratchet teeth (34), a suture roller (35) and a ratchet pawl (36). The connecting seat (32) is fixed on the outer side of the circular cavity (31). The connecting seat (32) is installed on the outer end of the grooved Kirschner wire (2). The intermediate wheel (33) is rotatably connected in the circular cavity (31). A plurality of ratchet teeth (34) are arranged at equal intervals on the circumferential outer side of the intermediate wheel (33). A ratchet pawl (36) for use with the ratchet teeth (34) is also movably installed in the circular cavity (31). A suture roller (35) is fixed radially on the intermediate wheel (33). The end of the first suture (4) passes through the side opening of the circular cavity (31) and is fixed on the suture roller (35).

4. A novel combined double-wire skin stretching device according to claim 3, characterized in that: The rotating shaft of the intermediate wheel (33) extends to the outside of the circular cavity (31), and an operating knob (37) is fixed to the extended end of the rotating shaft, and the intermediate wheel (33) can be driven to rotate by the operating knob (37).

5. A novel combined double-wire skin stretching device according to claim 1, characterized in that: The second tensioner (6) comprises a rectangular cavity plate (61) and a suture connection seat (64). The rectangular cavity plate (61) is provided with two parallel intermediate cavities (62). The outer side of the intermediate cavity (62) is provided with an oblong connecting groove (63). Each intermediate cavity (62) is slidably connected with a suture connection seat (64). The suture connection seat (64) is provided with a suture through groove (65). The suture through groove (65) is used for the end of the second suture (5) to pass through. The outer side of the suture connection seat (64) is also threadedly connected with a suture fixing pin (66). The inner side end of the suture fixing pin (66) abuts against the suture through groove (65) to complete the fixing of the second suture (5) in the suture connection seat (64).

6. A novel combined double-wire skin stretching device according to claim 5, characterized in that: A plurality of pin holes (67) are also arranged at equal intervals in the middle cavity (62), and a pin hole (67) is also provided on the suture connection seat (64). The pin hole (67) of the middle cavity (62) and the pin hole (67) of the connection seat (64) are connected via a threaded pin.

7. A novel combined double-wire skin stretching device according to claim 5, characterized in that: The suture connection seat (64) is slidably connected in the connecting groove (63), and a rubber anti-slip pad is provided at the inner side end of the suture connection seat (64).

8. The novel combined double-wire skin stretching device according to claim 5, characterized in that: The suture through-groove (65) is a through-channel with trumpet-shaped ends and a narrow middle.

9. A novel combined double-wire skin stretching device according to claim 1, characterized in that: The spacing between adjacent grooved Kirschner wires (2) is set at 15-20 mm.

10. A novel combined double-wire skin stretching device according to claim 1, characterized in that: A silicone protective pad (7) is provided on the second suture (5) near the second distractor (6), and the tail end of the silicone protective pad (7) is against the skin.

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