Flap separator with adjustable thickness

Abstract

The invention relates to a thickness-adjustable skin flap separator, the thickness-adjustable skin flap separator comprises a skin grasping tooth assembly, a height adjusting assembly and a skin flap separator assembly, the upper part of the height adjusting assembly is connected with the skin grasping tooth assembly, the lower part of the height adjusting assembly is connected with the skin flap separator assembly, and the skin flap separator assembly is connected with the skin grasping tooth assembly. The skin grasping tooth assembly is used for clamping a corium layer on the edge of skin, the height adjusting assembly is used for accurately adjusting the thickness of a skin flap needing to be cut, the skin flap separator assembly is used for cutting the skin flap, and the cutting thickness of the skin flap separator assembly is controlled through the height adjusting assembly. According to the thickness-adjustable flap separator, the flap separation thickness can be accurately controlled in a flap separation operation, the problem that the flap thickness is not uniform due to experience differences of doctors is solved, and accurate separation is achieved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a flap separator with adjustable thickness. Background Art

[0002] Breast cancer, the most common malignant tumor in women worldwide, requires surgical treatment as a core treatment modality. During breast cancer surgery, flap separation is a critical and complex procedure, the quality of which directly impacts postoperative wound healing, the risk of local recurrence, and aesthetic outcomes, profoundly impacting the patient's physical and psychological recovery. However, numerous challenges remain in flap separation technology and the application of related instruments.

[0003] Controlling the thickness of the flap is the core difficulty in flap separation operations. This process is highly dependent on the clinical experience of the surgeon. For beginners, it is difficult to accurately grasp the thickness of the flap due to the lack of sufficient practical experience and accurate perception of tissue layers. Even experienced doctors find it difficult to ensure that the thickness of the flap in the entire separation area is completely consistent during surgery, and some areas may be too thick or too thin. A flap that is too thick may retain too much fat tissue, increase the risk of residual tumor cells, and affect the subsequent treatment effect; while a flap that is too thin will affect blood circulation, leading to flap necrosis, delayed healing, and an increased chance of postoperative complications.

[0004] With the continuous advancement of medical technology, laparoscopic surgery for breast cancer has gradually been promoted due to its advantages such as small incisions and good concealment. However, this surgical method places higher demands on flap separation technology. The doctor needs to complete the separation of the flap in the entire breast area through a small incision in the armpit within a limited field of view and operating space. This not only tests the doctor's spatial operation ability and fine anatomical skills, but also requires rich experience to deal with complex anatomical structures and potential operational risks. In a small space, the slightest carelessness may damage important blood vessels, nerves or cause uneven flap separation, which significantly increases the difficulty of flap separation in laparoscopic surgery.

[0005] From the perspective of surgical instruments, flap separation currently routinely uses instruments such as ordinary scalpels, electric knives, or tissue scissors. These instruments are not specifically designed for breast cancer flap separation and have obvious limitations. When using ordinary scalpels or cold knives such as tissue scissors for flap separation, intraoperative bleeding is more common because they do not have hemostatic function. Bleeding not only affects the clarity of the surgical field of view, increases the difficulty of surgical operation, and prolongs the operation time, but may also lead to increased intraoperative bleeding and affect the patient's postoperative recovery. In addition, during the cold knife separation process, the control of the flap thickness depends entirely on the strength, angle, and knife-handling method of the doctor's handheld instrument. Even experienced doctors find it difficult to completely avoid the problem of inconsistent flap thickness in some areas.

[0006] Although the application of electrosurgery in flap separation has solved the bleeding problem to a certain extent and can perform electrocoagulation to stop bleeding on small blood vessels, so that intraoperative bleeding can be controlled to a certain extent, there is a serious risk of thermal damage during the use of electrosurgery. When the electrosurgery knife is moved too shallowly, the heat generated will be transferred to the dermis tissue, causing damage to the dermal cells. In mild cases, it will cause skin pigmentation and local tissue necrosis. In severe cases, it may even penetrate the skin, causing full-thickness skin damage, seriously affecting postoperative wound healing and the patient's quality of life. At the same time, the range of thermal damage caused by the electrosurgery is difficult to accurately control, which may cause unnecessary damage to the surrounding normal tissues and increase the risk of postoperative complications.

[0007] In summary, existing breast cancer flap separation techniques and instruments have numerous shortcomings and cannot meet the precision, safety, and efficiency requirements of clinical surgery. Developing a specialized surgical instrument that can precisely control flap thickness, reduce intraoperative bleeding, and avoid thermal injury has important practical significance and clinical value for improving the efficacy of breast cancer surgery, reducing the incidence of postoperative complications, and improving patient outcomes. Summary of the Invention

[0008] One advantage of the present invention is that it provides a flap separator with adjustable thickness. The flap separator with adjustable thickness can accurately control the thickness of the flap separation during surgery, greatly reducing the problem of uneven flap thickness caused by differences in doctor's experience, achieving precise separation, reducing the risk of tumor residue and the probability of flap necrosis, improving the quality of surgery from the source, and laying a good foundation for the patient's postoperative recovery.

[0009] Another advantage of the present invention is that it provides a flap separator with adjustable thickness. The flap separator with adjustable thickness can absorb the heat, gas and liquid generated by cutting in time, effectively avoiding local accumulation of heat and conduction to the dermis tissue, preventing skin burns, penetration and other thermal damage, protecting the surrounding normal tissues, ensuring smooth healing of postoperative wounds, and improving the patient's quality of life after surgery.

[0010] Another advantage of the present invention is that it provides a flap separator with adjustable thickness, which can provide clear cutting guidance, reducing the time and energy of the doctor in judging and adjusting the cutting direction during surgery, and effectively improving the efficiency of the surgery.

[0011] Another advantage of the present invention is that it provides a flap separator with adjustable thickness, which can process the material generated by cutting in real time, ensure a clear surgical field of view, reduce the difficulty of surgical operation, and shorten the operation time.

[0012] Another advantage of the present invention is that it provides a flap separator with adjustable thickness, which can adapt to a variety of surgical scenarios and can flexibly adjust the flap separation thickness according to the skin and tissue conditions and surgical requirements of different patients.

[0013] According to another aspect of the present invention, the present invention further provides a flap separator with adjustable thickness, the flap separator with adjustable thickness comprising:

[0014] a skin grasping tooth assembly;

[0015] a height adjustment assembly, the height adjustment assembly comprising an upper rack and a lower rack and an adjustment unit, the upper rack and the lower rack being movably connected to the adjustment unit, the adjustment unit being adapted to adjust the upper rack and the lower rack to move closer to or further away from each other, the upper rack being fixed to the skin grasping tooth assembly; and

[0016] A flap separator assembly includes a puncture needle unit and an electric cutting unit. The electric cutting unit is slidably mounted on the puncture needle unit, and the descending rack is fixed to the electric cutting unit.

[0017] According to one embodiment of the present invention, the puncture needle unit includes two puncture needles and a parallel fixing member, the ends of the two puncture needles are fixed at both ends of the parallel fixing member to remain parallel to each other, and the downward rack is perpendicular to the plane formed by the two puncture needles.

[0018] According to one embodiment of the present invention, the electric cutting unit includes a puncture needle stabilizer and an electric cutter, a puncture needle travel hole is provided on both sides of the puncture needle stabilizer, a working channel is provided in the middle of the puncture needle, the puncture needle stabilizer is movably mounted on the puncture needle through the puncture needle travel hole, the downward rack is fixed to the puncture needle stabilizer, the electric cutter is movably mounted on the working channel, and is suitable for performing cutting work along the direction of the puncture needle.

[0019] According to one embodiment of the present invention, the electric cutter includes a sliding sleeve, a cutting wire, a push rod and an electrode connector, the push rod is movably installed in the working channel, the sliding sleeve is installed at one end of the push rod and is slidably connected to the two puncture needles, the cutting wire is installed in the sliding sleeve and is located between the two puncture needles, and the electrode connector is arranged at the other end of the push rod and is electrically connected to the cutting wire.

[0020] According to one embodiment of the present application, the sliding sleeve comprises a push rod connector, a left sleeve and a right sleeve, the push rod connector is installed at one end of the push rod, the left sleeve and the right sleeve are respectively sleeved on the puncture needles and fixed to the push rod connector, and the cutting wire is installed between the left sleeve and the right sleeve and keeps a predetermined distance from the push rod connector.

[0021] According to one embodiment of the present application, the electric cutter comprises a sliding sleeve, a cutting wire, a push rod, an electrode connector and a suction connector, the push rod is movably installed in the working channel, the sliding sleeve is installed at one end of the push rod and slidably sleeved on the two puncture needles, the cutting wire is installed in the sliding sleeve and between the two puncture needles, the electrode connector is arranged at the other end of the push rod and electrically connected to the cutting wire, the push rod has a suction channel, the suction channel port is arranged on the sliding sleeve close to the cutting wire, and the suction connector is arranged at the other end of the push rod close to the electrode connector.

[0022] According to one embodiment of the present application, the sliding sleeve comprises a push rod connector, a left sleeve and a right sleeve, the push rod connector is installed at one end of the push rod, the push rod connector protrudes to form a suction port, the suction port is communicated with the suction channel, the left sleeve and the right sleeve are respectively sleeved on the puncture needles and fixed to the push rod connector, and the cutting wire is installed between the left sleeve and the right sleeve and keeps a predetermined distance from the suction port.

[0023] According to one embodiment of the present application, the adjusting unit comprises a housing, an adjusting knob and an adjusting tooth, the housing has an upper row groove and a lower row groove, the upper row tooth is movably installed in the upper row groove, the lower row tooth is movably installed in the lower row groove, the adjusting tooth is located inside the housing and engages the upper row tooth and the lower row tooth, and keeps one end of the upper row tooth and the lower row tooth opposite, the adjusting knob is coaxially fixed to the adjusting tooth and rotatably arranged outside the housing.

[0024] According to one embodiment of the present application, the skin gripping tooth assembly comprises at least one skin gripping tooth and a fixing member, the skin gripping tooth is fixed to one end of the fixing member, the upper row tooth is fixed to the fixing member and kept vertical to the fixing member, and the plane where the fixing member is located is kept parallel to the plane formed by the two puncture needles.

[0025] According to one embodiment of the present application, the height adjusting assembly further comprises an auxiliary adjusting rod and a rod barrel, the auxiliary adjusting rod is movably installed in the rod barrel, the rod barrel is fixed to the fixing member, and the auxiliary adjusting rod is fixed to the puncture needle stabilizer.

[0026] Further objects and advantages of the present application can be more fully understood and appreciated by reference to the following description taken in connection with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the adjustable thickness flap separator according to an embodiment of the present application.

[0028] Figure 2 is a schematic diagram of the overall structure of the adjustable thickness flap separator according to an embodiment of the present application.

[0029] Figure 3 is a schematic diagram of the overall structure of the adjustable thickness flap separator according to an embodiment of the present application.

[0030] Figure 4 is a schematic diagram of the overall structure of the adjustable thickness flap separator according to an embodiment of the present application.

[0031] Figure 5 is a schematic diagram of the overall structure of the adjustable thickness flap separator according to an embodiment of the present application.

[0032] Figure 6 is a schematic diagram of the overall structure of the adjustable thickness flap separator according to an embodiment of the present application.

[0033] Figure 7 is a schematic diagram of the overall structure of the adjustable thickness flap separator according to an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following description is presented to enable any person skilled in the art to make and use the application. The preferred embodiments disclosed herein are only examples of the application and variations of these examples can be used as alternatives thereof. The principles defined herein can be applied to other embodiments, variants and improvements without departing from the spirit and scope of the present application.

[0035] Those skilled in the art will understand that, in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms cannot be understood as a limitation of the present application.

[0036] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0037] Reference Attachment Figure 1 To the attached Figure 2 As shown, the adjustable thickness skin flap separator 1 of the present application is illustrated, and the adjustable thickness skin flap separator 1 includes a skin grabbing tooth assembly 10, a height adjustment assembly 20 and a skin flap separator assembly 30. The upper part of the height adjustment assembly 20 is connected to the skin grabbing tooth assembly 10, and the lower part of the height adjustment assembly 20 is connected to the skin flap separator assembly 30. The skin grabbing tooth assembly 10 is used to support the dermis layer at the edge of the skin, and the height adjustment assembly 20 is used to accurately adjust the thickness of the skin flap to be cut. The skin flap separator assembly 30 is used to cut the skin flap, and the cutting thickness of the skin flap separator assembly 30 is controlled by the height adjustment assembly 20, so that the adjustable thickness skin flap separator 1 can accurately control the thickness of the skin flap separation during the skin flap separation operation, reducing the problem of uneven skin flap thickness caused by differences in doctor's experience, achieving precise separation, reducing the risk of tumor residue and the probability of skin flap necrosis, improving the quality of surgery from the source, and laying a good foundation for the patient's postoperative recovery. Furthermore, the flap separator assembly 30 also has a suction function, that is, the flap separator 1 with adjustable thickness can absorb the heat, gas and liquid generated by cutting in a timely manner, which can effectively prevent the heat from locally accumulating and conducting to the dermis tissue, prevent skin burns, penetration and other thermal damage, protect the surrounding normal tissues, ensure the smooth healing of postoperative wounds, and improve the patient's quality of life after surgery.

[0038] Specifically, the skin-grasping tooth assembly 10 includes at least one skin-grasping tooth 11 and a fixing member 12. The skin-grasping tooth 11 is mounted on one end of the fixing member 12 and maintained in the same plane. The number of skin-grasping teeth 11 can be one or more, and the number of skin-grasping teeth 11 is not a limitation of the present invention. The skin-grasping tooth 11 can be made of stainless steel or medical-grade plastic to reduce the risk of infection after single use, or can be sterilized for reuse.

[0039] The fixing member 12 extends outward from one end of the skin-grasping teeth 11 to form a first working surface, on which the skin-grasping teeth 11 and the fixing member 12 are both located. The height adjustment assembly 20 is mounted perpendicular to the fixing member 12, that is, perpendicular to the plane of the first working surface.

[0040] The height adjustment assembly 20 further includes an upper rack 21, a lower rack 22 and an adjustment unit 23. The upper rack 21 and the lower rack 22 are movably connected to the adjustment unit 23. The adjustment unit 23 is suitable for adjusting the upper rack 21 and the lower rack 22 to move closer to or away from each other. The upper rack 21 is fixed to the fixing member 12 of the skin grabbing tooth assembly 10 and remains perpendicular to the fixing member 12, that is, remains perpendicular to the plane of the first working surface.

[0041] As attached Figure 3 The figure shows an exploded structural diagram of the adjustment unit 23 of the flap separator 1 with adjustable thickness according to the present invention. The upper rack 21 is smooth on one side and has teeth equidistantly distributed on the other side. The lower rack 22 is symmetrically arranged with the upper rack 21, and its own teeth are opposite. The adjustment unit 23 further includes a shell 231, an adjustment tooth 232 and an adjustment knob 233. The shell 231 also has an upper groove 234 and a lower groove 235. The upper rack 21 is movably mounted on the upper groove 234, and the lower rack 22 is movably mounted on the lower groove 235. The adjustment tooth 232 is rotatably arranged inside the shell 231 and engages the teeth of the upper rack 21 and the lower rack 22 left and right. In other words, the The upper groove 234 and the lower groove 235 are kept parallel, and the adjusting tooth 232 is set between the upper groove 234 and the lower groove 235, and keeps the upper rack 21 movably installed in the upper groove 234 so as to engage with one side of the adjusting tooth 232, and keeps the lower rack 22 movably installed in the lower groove 235 so as to engage with the other side of the adjusting tooth 232, and keeps the upper rack 21 and the lower rack 22 parallel to each other and makes their own tooth shapes relative to each other.

[0042] The adjusting knob 233 is arranged on the outside of the housing 231 and fixed coaxially with the adjusting knob. When the adjusting knob 233 rotates, the adjusting tooth 232 can rotate synchronously and convert its own rotational motion into the linear motion of the upper rack 21 and the lower rack 22. Since the upper rack 21 and the lower rack 22 are arranged in a centrally symmetrical manner, when the adjusting knob 233 rotates, the distal ends of the upper rack 21 and the lower rack 22 simultaneously move closer to or away from each other. Here, the ends of the upper rack 21 and the lower rack 22 away from the adjusting tooth 232 are defined as the distal ends. The distal end of the upper rack 21 is fixed to the fixing member 12, and the distal end of the lower rack 22 is fixed to the flap separator assembly 30. Therefore, when the adjustment knob 233 of the adjustment unit 23 is rotated, the distal ends of the upper rack 21 and the lower rack 22 are simultaneously moved closer to or farther away from each other, that is, the distance between the two distal ends can be adjusted. In other words, taking the total length of the upper rack 21 and the lower rack 22 projected onto their own axes as an example, the total length of the upper rack 21 and the lower rack 22 projected onto their own axes changes with the rotation of the adjustment knob 233, thereby adjusting the distance between the skin grabbing tooth assembly 10 and the flap separator assembly 30, so that the flap separator 1 with adjustable thickness can accurately control the flap separation thickness during surgery through the height adjustment assembly 20, greatly reducing the problem of uneven flap thickness caused by differences in doctor's experience, achieving precise separation, reducing the risk of tumor residue and the probability of flap necrosis, improving the quality of surgery from the source, and laying a good foundation for the patient's postoperative recovery.

[0043] The height adjustment assembly 20 also includes an auxiliary adjustment rod 24 and a rod barrel 25. The axis of the rod barrel 25 is parallel to the upper rack 21 and the lower rack 22, and is located in the same plane as the upper rack 21 and the skin grabbing teeth 11. The auxiliary adjustment rod 24 is coaxially and movably installed in the rod barrel 25 to ensure that the auxiliary adjustment rod 24 can move smoothly in the rod barrel 25 and keep its own axis coincident with the axis of the rod barrel 25, and at the same time be parallel to the upper rack 21, so as to ensure that when the adjustment knob 233 is rotated, the skin grabbing teeth assembly 10 can smoothly move closer to or away from each other relative to the flap separator assembly 30.

[0044] It is worth mentioning that a length scale can also be provided on the auxiliary adjustment rod 24, which displays the distance adjusted by the adjustment unit 23 in real time as the auxiliary adjustment rod 24 moves in the rod barrel 25, so that the operator can more accurately control the total distance moved by the upper rack 21 and the lower rack 22.

[0045] The rod barrel 25 is vertically fixed to the end of the fixing member 12 close to the skin grabbing teeth 11, and the upper rack 21 is fixed to the end of the fixing member 12 away from the skin grabbing teeth 11. The auxiliary adjustment rod 24 is vertically installed on the skin flap separator assembly 30, that is, the skin grabbing teeth assembly 10 and the skin flap separator assembly 30 can be assumed to be the upper and lower sides of a quadrilateral, the upper rack 21 and the lower rack 22 constitute one of the left and right sides of the quadrilateral, and the auxiliary adjustment rod 24 and the rod barrel 25 constitute the other of the left and right sides of the quadrilateral, so as to enhance the overall torsional resistance of the adjustable thickness skin flap separator 1 and maintain the adjustment accuracy of the height adjustment assembly 20.

[0046] Specifically, the flap separator assembly 30 further includes a puncture needle unit 31 and an electric cutting unit 32. The puncture needle unit 31 includes two parallel puncture needles 311 and a parallel fixing member 312 disposed at the ends of the puncture needles 311. The parallel fixing member 312 is mounted on the blunt ends of the puncture needles 311. The electric cutting unit 32 further includes a puncture needle stabilizer 321 and an electric cutter 322. The puncture needle stabilizer 321 is generally flat and has a puncture needle entry hole 3211 extending through it on both sides and a working channel 3212 extending through it in the middle. The axes of the puncture needle entry hole 3211 and the working channel 3212 remain parallel to each other.

[0047] The diameter of the puncture needle passage hole 3211 is consistent with the diameter of the puncture needle 311 , and the puncture needle unit 31 passes through the puncture needle passage hole 3211 from the adjustment unit 23 toward the auxiliary adjustment rod 24 , and the electric cutting unit 32 is movably installed in the working channel 3212 .

[0048] The two puncture needles 311 together form a second working surface, which is parallel to the first working surface, that is, parallel to the skin grasping tooth assembly 10 .

[0049] like Figure 4The cutting wire 3222 is installed on the sliding sleeve 3221, that is, across the puncture needle 311 and away from the parallel fixing piece 312 of the puncture needle unit 31. It can be understood that the push rod 3223 and the cutting wire 3222 and the sliding sleeve 3221 are located in the second working plane, which is parallel to the first working plane, that is, the cutting wire 3222 is parallel to the skin grab tooth 11, so that the adjustable thickness flap separator 1 can accurately control the flap separation thickness during the operation, that is, the relative distance between the cutting wire 3222 and the skin grab tooth 11.

[0050] Further, the sliding sleeve 3221 includes a push rod connecting piece 32211 and a left sleeve 32213 and a right sleeve 32214, the left sleeve 32213 and the right sleeve 32214 are respectively sleeved on the puncture needle 311 and can slide along the puncture needle 311, and the two ends of the push rod connecting piece 32211 are connected with the left sleeve 32213 and the right sleeve 32214, and the middle of the push rod connecting piece 32211 is fixedly connected with the push rod 3223.

[0051] In particular, the end of the left cannula 32213 and the right cannula 32214 close to the tip of the puncture needle 311 is defined as the front end, and the end close to the parallel fixing piece 312 is defined as the rear end. The rear ends of the left cannula 32213 and the right cannula 32214 are fixed to the push rod connecting piece 32211. The push rod connecting piece 32211 extends from the working channel 3212 toward the puncture needle 311 on both sides and connects the left cannula 32213 and the right cannula 32214. The two ends of the cutting wire 3222 are connected to the front ends of the left cannula 32213 and the right cannula 32214, thereby forming a certain space between the cutting wire 3222 and the push rod connecting piece 32211. In this embodiment, the cutting wire 3222 is implemented in a spiral shape. It should be understood by those skilled in the art that the cutting wire 3222 can also be implemented in a wavy, zigzag, straight, or other shapes. The implementation shape of the cutting wire 3222 includes but is not limited to the above-mentioned situations. By energizing the cutting wire 3222 to cut the flap during surgery, the heat generated by the high-frequency current causes the tissue cells to denature and coagulate, and simultaneously seals the smaller diameter blood vessels during cutting, achieving simultaneous cutting and hemostasis, and achieving precise cutting. The use of the cutting wire 3222 during surgery more thoroughly closes the blood vessels, reduces the probability of hematoma formation due to bleeding from the blood vessel stump after surgery, and reduces the incidence of complications such as incision infection and delayed flap healing.

[0052] It is worth mentioning that the push rod connector 32211 protrudes from the axial direction of the working channel 3212 toward the cutting wire 3222 to form a suction port 32212, and a suction channel 325 is formed inside the push rod 3223. The suction port 32212 is connected to the suction channel 325. The electric cutter 322 also includes an electrode connector 323 and a suction connector 324. The suction connector 324 is arranged at the other end of the push rod 3223, that is, the end away from the push rod connector 32211. The electrode connector 323 is electrically connected to the cutting wire 3222, and the electrode connector 323 is installed on the push rod 3223 near the suction connector 324. The aspirator connector 324 can be connected to an external suction device, thereby generating negative pressure at the suction port 32212, thereby absorbing the heat, gas and liquid generated by the cutting wire 3222 during cutting, which can effectively prevent heat from locally accumulating and conducting to the dermis, preventing thermal damage such as skin burns and penetration, protecting surrounding normal tissues, ensuring smooth healing of postoperative wounds, and improving the patient's postoperative quality of life. The electrode connector 323 is used to connect to an external power supply to provide cutting energy for the cutting wire 3222. The heat generated by the high-frequency current denatures and coagulates tissue cells, and closes blood vessels with smaller diameters while cutting, achieving simultaneous cutting and hemostasis, and achieving precise cutting. The use of the cutting wire 3222 during surgery can more thoroughly close blood vessels, reduce the probability of hematoma formation due to bleeding from the blood vessel stump after surgery, and reduce the incidence of complications such as incision infection and delayed flap healing.

[0053] The left cannula 32213 and the right cannula 32214 are hollow tubular structures with inner diameters equal to or slightly larger than the diameter of the puncture needle 311. The walls of the left cannula 32213 and the right cannula 32214 are very thin to minimize their overall volume. The overall thickness of the push rod connector 32211 is consistent with or less than the overall thickness of the puncture needle stabilizer 3211. This ensures that the sliding sleeve 3221 slides smoothly on the puncture needle 311, thereby ensuring the stability of the cutting wire 3222 during electrocuting and maintaining the accuracy of flap separation during flap cutting.

[0054] Reference Attachment Figure 7Figure 2 shows a schematic diagram of the operation of the adjustable-thickness skin flap separator 1. During the cutting operation, the adjustable-thickness skin flap separator 1 first clamps the skin-grasping teeth 11 of the skin-grasping teeth assembly 10 against the dermis at the edge of the skin. Simultaneously, the adjustment unit 23 of the height adjustment assembly 20 is adjusted to adjust the distance between the skin-grasping teeth 11 and the puncture needle unit 31. The puncture needle unit 31 is then inserted into the subcutaneous tissue to a desired location, providing guidance for the electrical cutting unit 32. After confirming the cutting thickness using the auxiliary adjustment lever 24 of the adjustment unit 23, the cutting wire 3222 is energized via the electrode connector 323. This pushes the push rod 3223 to move the cutting wire 3222 along the puncture needle 311, thereby cutting the subcutaneous tissue. Simultaneously, the suction port 32212 absorbs the heat, gas, and liquid generated by the cutting process, effectively preventing localized heat accumulation and conduction to the dermis, preventing thermal damage such as skin burns and penetration, and protecting surrounding normal tissue. The material attracted by the suction port 32212 is sucked out through the suction channel 325 in the push rod 3223 via the suction connector 324, which can also ensure a clear surgical field of view, reduce the difficulty of surgical operation, and shorten the operation time. It is understandable that the guidance of the puncture needle unit 31 can provide clear cutting guidance, reduce the time and energy of the doctor in judging and adjusting the cutting direction during the operation, and effectively improve the efficiency of the operation. The parallel movement of the electric cutting unit 32 relative to the skin grabbing tooth assembly 10 can achieve precise separation of the flap thickness, greatly reducing the problem of uneven flap thickness caused by differences in doctor experience, reducing the risk of tumor residue and the probability of flap necrosis, improving the quality of the operation from the source, and laying a good foundation for the patient's postoperative recovery.

[0055] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A flap separator with adjustable thickness, characterized in that: include: a skin grasping tooth assembly; a height adjustment assembly, the height adjustment assembly comprising an upper rack, a lower rack, and an adjustment unit, the upper rack and the lower rack being movably connected to the adjustment unit, the adjustment unit being adapted to adjust the upper rack and the lower rack toward or away from each other, the upper rack being fixed to the skin grasping tooth assembly; and A flap separator assembly includes a puncture needle unit and an electric cutting unit. The electric cutting unit is slidably mounted on the puncture needle unit, and the descending rack is fixed to the electric cutting unit.

2. The adjustable thickness skin flap separator according to claim 1, wherein the puncture needle unit comprises two puncture needles and a parallel fixing piece, the ends of the two puncture needles are fixed at both ends of the parallel fixing piece to keep them parallel to each other, and the downward rack is perpendicular to the plane formed by the two puncture needles.

3. The adjustable thickness skin flap separator according to claim 2, wherein the electric cutting unit includes a puncture needle stabilizer and an electric cutter, a puncture needle advancement hole is provided on both sides of the puncture needle stabilizer, a working channel is provided in the middle of the puncture needle, the puncture needle stabilizer is movably mounted on the puncture needle through the puncture needle advancement hole, the downward rack is fixed to the puncture needle stabilizer, the electric cutter is movably mounted on the working channel, and is suitable for performing cutting work along the direction of the puncture needle.

4. A skin flap separator with adjustable thickness according to claim 3, wherein the electric cutter includes a sliding sleeve, a cutting wire, a push rod and an electrode connector, the push rod is movably installed in the working channel, the sliding sleeve is installed at one end of the push rod and is slidably connected to the two puncture needles, the cutting wire is installed in the sliding sleeve and is located between the two puncture needles, and the electrode connector is arranged at the other end of the push rod and is electrically connected to the cutting wire.

5. The adjustable thickness skin flap separator according to claim 4, wherein the sliding sleeve includes a push rod connector, a left sleeve and a right sleeve, the push rod connector is installed on one end of the push rod, the left sleeve and the right sleeve are respectively sleeved on the puncture needle and fixed to the push rod connector, and the cutting wire is installed between the left sleeve and the right sleeve and maintains a predetermined distance from the push rod connector.

6. A flap separator with adjustable thickness according to claim 3, wherein the electric cutter includes a sleeve, a cutting wire, a push rod, an electrode connector, and an aspirator connector, the push rod is movably installed in the working channel, the sleeve is installed at one end of the push rod and is slidably connected to the two puncture needles, the cutting wire is installed in the sleeve and is located between the two puncture needles, the electrode connector is arranged at the other end of the push rod and is electrically connected to the cutting wire, the push rod has a suction channel, the suction channel port is arranged on the sleeve close to the cutting wire, and the aspirator connector is arranged at the other end of the push rod close to the electrode connector.

7. A flap separator with adjustable thickness according to claim 6, wherein the sliding sleeve includes a push rod connector, a left sleeve and a right sleeve, the push rod connector is installed on one end of the push rod, the push rod connector protrudes to form a suction port, the suction port is connected to the suction channel, the left sleeve and the right sleeve are respectively sleeved on the puncture needle and fixed to the push rod connector, the cutting wire is installed between the left sleeve and the right sleeve and maintains a predetermined distance from the suction port.

8. A flap separator with adjustable thickness according to any one of claims 5 or 7, wherein the adjustment unit includes a shell, an adjustment knob and an adjustment tooth, the shell has an upper groove and a lower groove, the upper rack is movably mounted on the upper groove, the lower rack is movably mounted on the lower groove, the adjustment tooth is located inside the shell and engages the upper rack and the lower rack, and keeps the toothed ends of the upper rack and the lower rack relative to each other, the adjustment knob is coaxially fixed to the adjustment tooth and is rotatably arranged on the outside of the shell.

9. The skin flap separator with adjustable thickness according to claim 8, wherein the skin grabbing tooth assembly includes at least one skin grabbing tooth and a fixing member, the skin grabbing tooth is fixed to one end of the fixing member, the upper rack is fixed to the fixing member and remains vertical to the fixing member, and the plane where the fixing member is located remains parallel to the plane formed by the two puncture needles.

10. The thickness-adjustable skin flap separator according to claim 9, wherein the height adjustment assembly further comprises an auxiliary adjustment rod and a rod barrel, the auxiliary adjustment rod is movably mounted on the rod barrel, the rod barrel is fixed to the fixing member, and the auxiliary adjustment rod is fixed to the puncture needle stabilizer.

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