Flap taking knife

Abstract

The invention relates to the technical field of scalpels, in particular to a petal taking knife. The petal taking knife comprises a knife body and an annular blade, wherein the knife body is provided with an annular groove for mounting the annular blade; a telescopic driving mechanism is arranged in the cutter body and used for driving the annular blade to stretch out of or retract into the annular groove and adjusting the height of the portion, stretching out of the annular groove, of the annular blade. The valve taking knife is unique in structure, an annular incision can be obtained through one-time cutting, use is convenient, operation is easy, an operator can accurately control the operation depth by adjusting the height of the portion, stretching out of the annular groove, of the annular blade, the operator can control the operation more easily, the requirement for the operation technology of the operator is lowered, and the working efficiency of the operator is improved. Blood vessels can be effectively prevented from being damaged, and surgical risks are reduced.

Description

Technical Field

[0001] This application relates to the technical field of surgical scalpels, and particularly to a valve-taking scalpel. Background Art

[0002] The basic structure of existing surgical scalpels generally includes a handle and a blade tip. The handle is for the surgeon to hold, and the blade tip is directly used for cutting tissues. The cutting edge of the blade tip is mostly a straight cutting edge or an inclined cutting edge, which can directly cut the relevant tissues. However, in valve-taking surgeries, such as gingivectomy and periodontal flap surgery, etc., the surgeon needs to hold the surgical scalpel to operate on the periodontal tissues, and remove diseased tissues, trim the bone contour, etc. through precise cutting actions. The above surgeries belong to delicate surgeries, which require relatively high clinical experience and operating techniques of the surgeon. Especially in complex periodontal surgeries, the surgeon needs to have rich experience and excellent skills to operate accurately. If the surgeon is not familiar with the anatomical structure or position, when performing the cutting in the valve-taking surgery, it may be cut obliquely or cut too much accidentally, and it may lead to increased bleeding during the surgery, which may affect the surgical field of view, bring certain difficulties to the surgical operation, and thus increase the surgical risk. Summary of the Invention

[0003] This application discloses a valve-taking scalpel to improve the accuracy of valve-taking surgery operations, while ensuring the surgical effect, reducing the requirements for the surgeon's operating level.

[0004] To achieve the above object, this application provides the following technical solutions:

[0005] In a first aspect, this application provides a valve-taking scalpel, which includes a blade body and an annular blade. The blade body is provided with an annular groove for installing the annular blade. A telescopic driving mechanism is arranged inside the blade body. The telescopic driving mechanism is used to drive the annular blade to extend out of or retract into the annular groove, and is used to adjust the height of the annular blade extending out of the annular groove.

[0006] Among them, when a valve-taking surgery needs to be performed, the surgeon can drive the annular blade to extend out of the annular groove through the telescopic driving mechanism, and make the height of the annular blade extending out of the annular groove reach a first preset height. The above annular blade is used to cut the target tissue of the patient, and a circular incision can be directly obtained. The target tissue flap is cut off with a blade-shaped surgical scalpel, a collagen block matching the size of the circular incision is placed at the incision, and the wound is sutured. The valve-taking scalpel in this application has a unique structure, can obtain a circular incision in one cut, is convenient to use, simple to operate, and can help the surgeon accurately control the surgical depth by adjusting the height of the annular blade extending out of the annular groove, making it easier for the surgeon to control the surgical operation, reducing the requirements for the surgeon's operating skills, and can effectively avoid damaging blood vessels and reducing the surgical risk.

[0007] Furthermore, the blade body includes a blade head and a handle connected to the blade head, and the blade head and the handle are detachably connected; an annular groove is provided on the blade head, and the shape of the annular blade includes a circular ring, a double arc ring, a triangular ring, a rectangular ring, a prismatic ring and an irregular ring.

[0008] Furthermore, the annular blade includes a first blade and a second blade, and the annular blade has at least a first working position and a second working position; wherein, when the annular blade is in the first working position, the first blade and the second blade both extend out of the annular groove and are spliced to form an annular blade; when the annular blade is in the second working position, the first blade extends out of the annular groove and the second blade remains in the annular groove.

[0009] Furthermore, the first blade is a sheet-shaped blade, and the first blade is arranged at the top of the side of the blade body; a first angle adjustment mechanism is arranged in the blade body, and when the first blade extends out of the annular groove, the first angle adjustment mechanism is used to adjust the cutting angle of the first blade.

[0010] Furthermore, an annular blade is arranged on the first surface of the cutter head, wherein the cutting angle of the first blade includes at least a first angle and a second angle; when the first blade is at the first angle, the first blade is perpendicular to the first surface; when the first blade is at the second angle, the first blade is parallel to the first surface.

[0011] Furthermore, the first angle adjustment mechanism includes a first mounting seat, a first rotating shaft and a first knob, the cutter head includes a first chamber, the first chamber is connected to the annular groove, the first mounting seat is arranged in the first chamber, the first blade is rotatably connected to the first mounting seat through the first rotating shaft, the first knob is arranged on the side of the cutter head, and the first knob is transmission-connected to the first rotating shaft.

[0012] Furthermore, the second blade includes a first blade portion, a second blade portion and a third blade portion, the first blade portion and the third blade portion are arranged opposite to each other, the first blade and the second blade portion are arranged opposite to each other, the first blade, the first blade portion, the second blade portion and the third blade portion are spliced in sequence to form a rectangular ring-shaped annular blade; a second angle adjustment mechanism and a third angle adjustment mechanism are provided in the blade body, the second angle adjustment mechanism is used to adjust the cutting angle of the first blade portion, and the third angle adjustment mechanism is used to adjust the cutting angle of the third blade portion, so that the first blade portion and the third blade portion are close to or away from each other.

[0013] Further, the second angle adjustment mechanism includes a second mounting base, a second rotating shaft, and a second knob. The cutter head includes a second chamber that communicates with the annular groove. The second mounting base is disposed within the second chamber. The first cutter portion is rotatably connected to the second mounting base via the second rotating shaft. The second knob is disposed on the side surface of the cutter head and is in transmission connection with the second rotating shaft. The third angle adjustment mechanism includes a third mounting base, a third rotating shaft, and a third knob. The cutter head includes a third chamber that communicates with the annular groove. The third mounting base is disposed within the third chamber. The third cutter portion is rotatably connected to the third mounting base via the second rotating shaft. The third knob is disposed on the side surface of the cutter head and is in transmission connection with the third rotating shaft.

[0014] Further, the cutter head is provided with a lighting lamp, and / or, the valve-taking cutter includes an electrocoagulation assembly disposed on the cutter body, and the electrocoagulation assembly is used for monopolar coagulation or bipolar coagulation.

[0015] Further, the telescopic drive mechanism includes a telescopic rod, a telescopic adjustment assembly, and a steering assembly disposed within the cutter body. The telescopic rod extends along the axial direction of the cutter body. The telescopic adjustment assembly is used to drive the telescopic rod to move along the axial direction of the cutter body. The telescopic rod is connected to the annular blade via the steering assembly so that the telescopic rod can drive the annular blade to expand and contract along the depth direction of the annular groove through the steering assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Structural schematic diagram of a valve-taking cutter according to an embodiment of the present application;

[0018] Figure 2 Structural schematic diagram of a valve-taking cutter according to an embodiment of the present application;

[0019] Figure 3 Structural schematic diagram of a valve-taking cutter according to an embodiment of the present application;

[0020] Figure 4 Structural schematic diagram of a valve-taking cutter according to an embodiment of the present application;

[0021] Figure 5 Structural schematic diagram of annular blades of different shapes provided by the present application;

[0022] Figure 6 Structural schematic diagram of a valve-taking cutter according to another embodiment of the present application;

[0023] Figure 7Cross-sectional view of a flap cutter according to an embodiment of the present application;

[0024] Figure 8 Cross-sectional view of a flap cutter according to an embodiment of the present application;

[0025] Figure 9 Schematic structural diagram of a telescopic adjustment component and a first cutting edge according to an embodiment of the present application;

[0026] Figure 10 Schematic structural diagram of a flap cutter according to an embodiment of the present application;

[0027] Figure 11 Schematic structural diagram of a flap cutter according to an embodiment of the present application;

[0028] Figure 12 Schematic structural diagram of a cutter head according to an embodiment of the present application;

[0029] Figure 13 Schematic structural diagram of a flap cutter according to an embodiment of the present application;

[0030] Figure 14 Schematic operation diagram of a method for taking a flap without mucosa according to an embodiment of the present application;

[0031] Figure 15 Schematic operation diagram of a method for taking a flap without mucosa according to an embodiment of the present application;

[0032] Figure 16 Schematic operation diagram of a method for taking a flap without mucosa according to an embodiment of the present application;

[0033] Figure 17 Schematic operation diagram of a method for taking a flap without mucosa according to an embodiment of the present application;

[0034] Figure 18 Schematic operation diagram of a method for taking a flap without mucosa according to an embodiment of the present application;

[0035] Figure 19 Schematic operation diagram of a method for taking a flap without mucosa according to an embodiment of the present application;

[0036] Figure 20 Schematic operation diagram of a method for taking a flap with mucosa according to an embodiment of the present application;

[0037] Figure 21 Schematic operation diagram of a method for taking a flap with mucosa according to an embodiment of the present application;

[0038] Figure 22 Schematic operation diagram of a method for taking a flap with mucosa according to an embodiment of the present application;

[0039] Figure 23 This is a schematic diagram of the operation of a method for harvesting a skin flap with mucosa according to an embodiment of the present application.

[0040] Reference numerals in the drawings: 100 - blade body; 110 - blade tip; 120 - handle; 130 - blade tip telescopic adjustment knob; 200 - annular blade; 210 - first cutting edge; 220 - second cutting edge; 221 - first cutting part; 222 - second cutting part; 223 - third cutting part; 300a - first angle adjustment mechanism; 310a - first mounting seat; 320a - first rotating shaft; 300b - second angle adjustment mechanism; 330b - second knob; 400 - telescopic drive mechanism; 410 - telescopic rod; 411 - second wedge surface; 420 - telescopic adjustment assembly; 421 - driving gear; 422 - rotating shaft; 423 - driven rack; 430 - steering assembly; 431 - first wedge; 431a - first wedge surface; 431b - first step; 432 - first elastic member; 510 - illuminating lamp; 520 - illuminating lamp button; 600 - electrocoagulation assembly; 610 - electrocoagulation display screen; 620 - first electrocoagulation button; 630 - second electrocoagulation button; 700 - electro - knife main unit; 710 - cable;

[0041] 01 - annular groove; 02 - accommodation cavity; 03 - chamfer; 04 - first slot; 05 - jack;

[0042] 10 - target tissue; 11 - target mucosa; 12 - target skin flap; 20 - collagen membrane. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0044] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0045] Figure 1 This is a schematic structural diagram of a skin - flap harvesting knife according to an embodiment of the present application, Figure 2 This is a schematic structural diagram of a skin - flap harvesting knife according to an embodiment of the present application, Figure 3 This is a schematic structural diagram of a skin - flap harvesting knife according to an embodiment of the present application, Figure 4The following is a schematic structural diagram of a flap cutter according to an embodiment of the present application. Please refer to Figures 1 to 4 In an embodiment of the present application, a flap cutter is provided. The flap cutter includes a blade body 100 and an annular blade 200. The blade body 100 is provided with an annular groove 01 for installing the annular blade 200. A telescopic driving mechanism (not shown in the figure) is provided inside the blade body 100. The telescopic driving mechanism is used to drive the annular blade 200 to extend or retract from the annular groove 01, and is used to adjust the height of the annular blade 200 extending from the annular groove 01.

[0046] Continue to refer to Figure 1 and Figure 2 . A blade head telescopic adjustment knob 130 is provided on the blade body 100. The blade head telescopic adjustment knob 130 is used to control the telescopic movement of the annular blade 200, so as to facilitate the operator to adjust the height of the annular blade 200 extending from the annular groove 01.

[0047] In some alternative embodiments, the annular blade 200 is provided with scales, so that the operator can accurately control the height of the annular blade 200 extending from the annular groove 01. It can be understood that the present application does not limit the height range of the annular blade 200 extending from the annular groove 01, and it is specifically set according to actual needs. Exemplarily, the height range of the blade extending from the annular groove 01 can be 0 mm - 5 mm, which can basically meet the requirements for cutting different thicknesses of skin flaps.

[0048] Among them, the annular blade 200 is slender, and the annular blade 200 gradually tapers from the bottom towards the cutting end, which is convenient for accurately cutting into the tissue. The overall length of the annular blade 200 can be 10 mm - 30 mm, and the width can be 1 mm - 5 mm.

[0049] In some alternative embodiments, the blade head 110 is provided with a lighting lamp 510, which can make the surgical field of view in the deep part of the oral cavity clearer. Among them, a lighting lamp button 520 can be provided on the blade body 100. The lighting lamp button 520 is used to control the opening and closing of the lighting lamp 510, so as to facilitate the operator to choose to turn on or off the lighting lamp 510 according to needs.

[0050] In some alternative embodiments, the flap cutter includes an electrocoagulation component 600 provided on the blade body 100. The electrocoagulation component 600 is used for monopolar coagulation or bipolar coagulation.

[0051] In some alternative embodiments, the electrocoagulation component 600 includes a first monopolar member (not shown in the figure). The first monopolar member is used to access the monopole of the high-frequency current. When the high-frequency current passes through the high-impedance tissue, heat will be generated in the tissue, resulting in tissue gasification or coagulation, preventing small blood vessels from rupturing, so that the flap cutter has both medical electrothermal coagulation and monopolar coagulation functions, meeting various application scenarios in the operation.

[0052] Among them, the first monopolar member is a metal sheet. In some alternative embodiments, the first monopolar member can be disposed on the side surface of the annular blade 200.

[0053] In some alternative embodiments, the electrocoagulation assembly 600 further includes a first electrocoagulation button 620 disposed on the blade body 100, and the first electrocoagulation button 620 is used to control the opening and closing of the first monopolar member.

[0054] In some alternative embodiments, the electrocoagulation assembly 600 includes a second monopolar member (not shown in the figure) and a third monopolar member (not shown in the figure). The second monopolar member is used to connect to the positive pole of the high-frequency current, and the third electrode member is used to connect to the negative pole of the high-frequency current.

[0055] As an alternative solution for the valve-taking knife, the second monopolar member and the third monopolar member are respectively disposed on the same side of the annular blade 200; or; the second monopolar member and the third monopolar member are respectively disposed on opposite sides of the annular blade 200.

[0056] During the operation, when a certain section of tissue with rich blood content or a sudden wound bleeds, the second monopolar member and the third monopolar member are respectively connected to the positive and negative poles of the high-frequency current. The second monopolar member, the tissue, and the third monopolar member form a current loop. When the high-frequency current passes through the high-impedance tissue, heat will be generated in the tissue, causing the tissue to vaporize or coagulate, realizing bipolar electrocoagulation and preventing small blood vessels from rupturing. Combining bipolar electrocoagulation with medical electrothermal coagulation enables the valve-taking knife to have both two coagulation methods and meet various application scenarios during the operation.

[0057] Referring to the figure, the electrocoagulation assembly 600 includes an electrocoagulation display screen 610 disposed on the blade body 100, and the electrocoagulation display screen 610 is used for information such as electrocoagulation mode and working power.

[0058] In some alternative embodiments, the electrocoagulation assembly 600 further includes a second electrocoagulation button 630 disposed on the blade body 100, and the second electrocoagulation button 630 is used to control the opening and closing of the second monopolar member and the third monopolar member.

[0059] In some alternative embodiments, the blade body 100 includes a blade head 110 and a handle 120 connected to the blade head 110. The blade head 110 is detachably connected to the handle 120, so as to facilitate the replacement of the blade head 110. Among them, the surface of the handle 120 can be provided with anti-slip textures to increase the stability of holding.

[0060] Among them, the annular groove 01 is disposed on the blade head 110. Figure 5 It is a schematic structural diagram of annular blades with different shapes provided by the present application. Figure 6 It is a schematic structural diagram of the valve-taking knife according to another embodiment of the present application. Referring to Figure 5 and Figure 6, the shape of the annular blade 200 includes a circular ring, a double-arc ring, a triangular ring, a rectangular ring, a rhombic ring, an irregular ring, etc., to meet the needs of cutting different-shaped skin flaps. It can be understood that the specific shape of the annular blade 200 is not limited in this application and can be flexibly set according to actual needs.

[0061] In some alternative embodiments, the annular blade 200 includes a first cutting edge 210 and a second cutting edge 220, and the annular blade 200 has at least a first working position and a second working position. Among them, when the annular blade 200 is in the first working position, as Figure 1 shown, both the first cutting edge 210 and the second cutting edge 220 extend out of the annular groove 01 and are spliced to form the annular blade 200. When the annular blade 200 is in the second working position, as Figure 3 shown, the first cutting edge 210 extends out of the annular groove 01, and the second cutting edge 220 remains in the annular groove 01.

[0062] It can be understood that when the annular blade 200 includes the first cutting edge 210 and the second cutting edge 220, the first cutting edge 210 and the second cutting edge 220 can each independently expand and contract, or only the first cutting edge 210 can expand and contract along the depth direction of the annular groove 01, while the second cutting edge 220 always remains in the state of extending out of the annular groove 01; or only the second cutting edge 220 can expand and contract along the depth direction of the annular groove 01, while the first cutting edge 210 always remains in the state of extending out of the annular groove 01, which is specifically set according to actual needs.

[0063] In some alternative embodiments, when the first cutting edge 210 and the second cutting edge 220 can each independently expand and contract, two independent expansion and contraction drive mechanisms need to be provided in the tool body 100. One expansion and contraction drive mechanism is used to drive the expansion and contraction of the first cutting edge 210, and the other expansion and contraction drive mechanism is used to drive the expansion and contraction of the second cutting edge 220. Correspondingly, the number of the tool head expansion and contraction adjustment knobs 130 is two and corresponds to the two expansion and contraction drive mechanisms one by one.

[0064] Regarding the structure of the expansion and contraction drive mechanism, taking the expansion and contraction drive mechanism for driving the expansion and contraction of the first cutting edge 210 as an example for illustration, Figure 7 is a sectional view of a flap-taking knife according to an embodiment of the present application, Figure 8 is a sectional view of a flap-taking knife according to an embodiment of the present application, Figure 9 is a schematic structural view of an expansion and contraction adjustment assembly and a first cutting edge according to an embodiment of the present application, Figure 10 is a schematic structural view of a flap-taking knife according to an embodiment of the present application. Please refer to it together with Figures 7 to 10, the telescopic drive mechanism 400 includes a telescopic rod 410, a telescopic adjustment assembly 420 and a steering assembly 430. Among them, an accommodation cavity 02 is provided in the blade body 100. The telescopic rod 410, the telescopic adjustment assembly 420 and the steering assembly 430 are all arranged in the above-mentioned accommodation cavity 02. The telescopic rod 410 extends along the axial direction of the blade body 100. The telescopic adjustment assembly 420 is used to drive the telescopic rod 410 to move along the axial direction of the blade body 100. The telescopic rod 410 is connected to the annular blade 200 through the steering assembly 430. Driven by the telescopic rod 410, the steering assembly 430 drives the annular blade 200 to expand and contract along the depth direction of the annular groove 01.

[0065] Referring to Figures 7 to 10 , the telescopic adjustment assembly 420 includes a driving gear 421, a rotating shaft 422 and a driven rack 423. Among them, the first end of the rotating shaft 422 is fixedly connected to the cutter head telescopic adjustment knob 130, the other end of the rotating shaft 422 is drivingly connected to the driving gear 421, the driving gear 421 meshes with the driven rack 423, and the driven rack 423 is arranged on the telescopic rod 410 and extends along the axial direction of the telescopic rod 410. Therefore, when the operator rotates the cutter head telescopic adjustment knob 130, the rotating shaft 422 can be driven to rotate, and the driving gear 421 will also rotate accordingly. Through the meshing action between the driving gear 421 and the driven rack 423, the telescopic rod 410 can be driven to move along the axial direction of the blade body 100.

[0066] In some alternative embodiments, an installation hole (not shown in the figure) is provided on the blade body 100. The installation hole communicates with the accommodation cavity 02. The rotating shaft 422 penetrates through the installation hole. One end of the rotating shaft 422 is drivingly connected to the driving gear 421 inside the accommodation cavity 02, and the other end of the rotating shaft 422 is connected to the cutter head telescopic adjustment knob 130 outside the accommodation cavity 02, which is convenient for the operator to operate.

[0067] When the operator drives the driving gear 421 to rotate by rotating the cutter head telescopic adjustment knob 130 and drives the driven rack 423 to move along the axial direction of the telescopic rod 410 to a preset position, in order to avoid the influence of external force on the position of the driving gear 421, an interference fit is provided between the rotating shaft 422 and the installation hole, so as to ensure that the rotating shaft 422 will not rotate relative to the installation hole when subjected to external force, thereby maintaining the position stability of the driving gear 421.

[0068] Of course, the specific structure of the telescopic adjustment assembly 420 is not limited in this application, as long as the telescopic rod 410 can be driven to move along the axial direction of the blade body 100. In addition to the above-mentioned gear-rack assembly, the telescopic adjustment assembly 420 can also be a lead screw assembly, a gear set, a screw mechanism, etc.

[0069] In addition, the telescopic driving mechanism 400 can also be a linear motor disposed within the blade body 100. The output end of the linear motor is connected to the annular blade 200 for driving the annular blade 200 to move along the depth direction of the annular groove 01. When the telescopic driving mechanism 400 is a linear motor, the structure is relatively simple, but a linear motor made of specific materials is required to enable it to withstand the disinfection treatment under high temperature and high pressure conditions.

[0070] Continuing to refer to Figures 7 to 10 , the steering assembly 430 may include a first wedge member 431. The first wedge member 431 includes a first wedge surface 431a. The end of the telescopic rod 410 close to the first wedge member 431 has a second wedge surface 411. The first wedge surface 431a and the second wedge surface 411 are in contact with each other, so that when the telescopic rod 410 moves along the axial direction of the blade body 100, the first wedge member 431 can move along the depth direction of the annular groove 01. Among them, the depth direction of the annular groove 01 is perpendicular to the axial direction of the blade body 100.

[0071] It can be understood that in the present application, by reasonably setting the inclination angles of the first wedge surface 431a and the second wedge surface 411, the telescopic rod 410 can more easily push the first wedge member 431 to move along the depth direction of the annular groove 01.

[0072] In some alternative embodiments, the steering assembly 430 further includes a first elastic member 432. Along the depth direction of the annular groove 01, the first wedge member 431 includes a first body and a second body connected to the first body. The first body is close to the telescopic rod 410, and the diameter of the first body is larger than that of the second body to form a first step 431b. Among them, along the depth direction of the annular groove 01, a first elastic member 432 is provided between the first step 431b and the wall surface of the receiving cavity 02 away from the telescopic rod 410. One end of the first elastic member 432 is fixedly connected to the above wall surface, and the other end of the first elastic member 432 is fixedly connected to the step surface of the first step 431b. When the telescopic rod 410 moves along the direction from the handle 120 to the blade tip 110, the first wedge member 431 moves in the direction of protruding from the annular groove 01 and compresses the first elastic member 432; when the telescopic rod 410 moves along the direction from the blade tip 110 to the handle 120, the first elastic member 432 can drive the first wedge member 431 to drive the annular blade 200 to move in the direction of retracting into the annular groove 01.

[0073] In order to enable the telescopic rod 410 to stably stay at a certain position, the rotating shaft 422 is in threaded cooperation with the mounting hole, and the rotating shaft 422 is connected to the driving gear 421 through a sliding assembly, so that only relative movement along the axial direction of the rotating shaft 422 can occur between the rotating shaft 422 and the driving gear 421, so that the rotating shaft 422 can only drive the driving gear 421 to rotate.

[0074] Among them, the sliding component may include a chute and a slider slidably connected to the chute. Specifically, the chute may be provided on the outer peripheral surface of the rotating shaft 422, and the slider is provided on the surface of the driving gear 421.

[0075] In some alternative embodiments, a limiting structure is provided in the accommodating cavity 02. The limiting structure is used to limit the axial displacement of the driving gear 421 along the rotating shaft 422, so that the rotating shaft 422 can only drive the driving gear 421 to rotate.

[0076] In some alternative embodiments, the first wedge member 431 extends into the annular groove 01. The annular groove 01 can function to limit the axial movement of the first wedge member 431 along the blade body 100, so that the first wedge member 431 can only move along the depth direction of the annular groove 01.

[0077] In some alternative embodiments, the first wedge member 431 and the annular blade 200 are fixedly connected by a connecting member, so that the first wedge member 431 can drive the annular blade 200 to move along the depth direction of the annular groove 01, that is, to flexibly adjust the height of the annular blade 200 protruding from the annular groove 01.

[0078] In some alternative embodiments, the first wedge member 431 may be an annular member, and the end of the annular member away from the second wedge surface 411 is fixedly connected to the annular blade 200.

[0079] Reference may continue to Figures 7 to 10 , the first cutting edge 210 is a blade-shaped cutting edge, and the first cutting edge 210 is provided at the top of the side surface of the blade body 100. A first angle adjusting mechanism 300a is provided in the blade body 100. When the first cutting edge 210 extends out of the annular groove 01, the first angle adjusting mechanism 300a is used to adjust the cutting angle of the first cutting edge 210. Among them, the cutting angle of the first cutting edge 210 refers to the included angle between the first cutting edge 210 and the plane where the annular groove 01 is located.

[0080] In some alternative embodiments, the annular blade 200 is provided on the first surface of the tool head 110, then the cutting angle of the first cutting edge 210 refers to the included angle between the first cutting edge 210 and the first surface. Among them, the cutting angle of the first cutting edge 210 at least includes a first angle and a second angle. When the first cutting edge 210 is at the first angle, the first cutting edge 210 is perpendicular to the first surface and can be spliced with the second cutting edge 220 to form the annular blade 200. When the first cutting edge 210 is at the second angle, the first cutting edge 210 is parallel to the first surface, and the first cutting edge 210 can cut the tissue alone.

[0081] It can be understood that the cutting angle of the first cutting edge 210 may also include other angles in addition to the first angle and the second angle, which are specifically set according to actual needs.

[0082] In some alternative embodiments, the first angle adjustment mechanism 300a includes a first mounting seat 310a, a first rotating shaft 320a and a first knob. The cutter head 110 includes a first chamber which communicates with the annular groove 01. The first mounting seat 310a is disposed in the first chamber, and the end of the first mounting seat 310a close to the first cutting edge 210 extends into the annular groove 01. The first cutting edge 210 is rotatably connected to the first mounting seat 310a through the first rotating shaft 320a. The first knob is disposed on the side surface of the cutter head 110 and is in transmission connection with the first rotating shaft 320a. By rotating the first knob, the first rotating shaft 320a can be driven to rotate, so as to adjust the included angle between the first cutting edge 210 and the first mounting seat 310a, and further the cutting angle of the first cutting edge 210 can be adjusted.

[0083] It should be noted that the first wedge-shaped member 431 can be fixedly connected to the first mounting seat 310a, that is, the first wedge-shaped member 431 can drive the first mounting seat 310a to move along the depth direction of the annular groove 01; or, as Figure 7 and Figure 8 shown, the first wedge-shaped member 431 is the first mounting seat 310a.

[0084] Continue to refer to Figures 7 to 10 , in order to facilitate the angle adjustment of the first cutting edge 210, a chamfer 03 is provided at the end of the annular groove 01 close to the first wedge-shaped member 431, so as to avoid interference between the first cutting edge 210 and the wall surface of the annular groove 01 when the first cutting edge 210 is adjusted from the first angle to the second angle.

[0085] Figure 11 This is a schematic structural view of the flap cutter according to an embodiment of the present application. Refer to Figure 11 , a first slot 04 extending along the depth direction of the annular groove 01 is provided on the cutter body 100. The first rotating shaft 320a passes through the first slot 04, and the end of the first rotating shaft 320a away from the first cutting edge 210 is connected to the first knob. When the first cutting edge 210 moves along the depth direction of the annular groove 01, the first rotating shaft 320a can move in the first slot 04.

[0086] Figure 12 This is a schematic structural view of the cutter head according to an embodiment of the present application. Refer to Figure 12The second blade 220 includes a first blade portion 221, a second blade portion 222 and a third blade portion 223, the first blade portion 221 and the third blade portion 223 are arranged opposite to each other, the first blade 210 and the second blade portion 222 are arranged opposite to each other, and the first blade 210, the first blade portion 221, the second blade portion 222 and the third blade portion 223 are sequentially spliced to form a rectangular ring-shaped annular blade 200. A second angle adjustment mechanism 300b and a third angle adjustment mechanism are arranged in the blade body 100, the second angle adjustment mechanism 300b is used to adjust the cutting angle of the first blade portion 221, and the third angle adjustment mechanism is used to adjust the cutting angle of the third blade portion 223, so that the first blade portion 221 and the third blade portion 223 are close to or away from each other.

[0087] Among them, the second angle adjustment mechanism 300b includes a second mounting seat, a second rotating shaft and a second knob 330b, the cutter head 110 includes a second chamber, the second chamber is connected to the annular groove 01, the second mounting seat is arranged in the second chamber, and the end of the first mounting seat 310a close to the first knife part 221 extends into the annular groove 01, the first knife part 221 and the second mounting seat are rotatably connected through the second rotating shaft, the second knob 330b is arranged on the side of the cutter head 110, and the second knob 330b is transmission-connected with the second rotating shaft, so that the second rotating shaft can be driven to rotate by rotating the second knob 330b, thereby adjusting the angle between the first knife part 221 and the second mounting seat, and then the cutting angle of the first knife part 221 can be adjusted.

[0088] In some optional embodiments, the third angle adjustment mechanism includes a third mounting seat, a third rotating shaft and a third knob, the cutter head 110 includes a third chamber, the third chamber is connected to the annular groove 01, the third mounting seat is arranged in the third chamber, and the end of the third mounting seat close to the third knife portion 223 extends into the annular groove 01, the third knife portion 223 is rotatably connected to the third mounting seat through the third rotating shaft, the third knob is arranged on the side of the cutter head 110, and the third knob is transmission-connected to the third rotating shaft, so that the third rotating shaft can be driven to rotate by rotating the third knob, thereby adjusting the angle between the third knife portion 223 and the third mounting seat, and then the cutting angle of the third knife portion 223 can be adjusted.

[0089] It can be understood that the structures of the second angle adjustment mechanism 300b and the third angle adjustment mechanism can refer to the first angle adjustment mechanism 300a, and will not be described in detail here.

[0090] Among them, the first chamber, the second chamber and the third chamber can be the same chamber, that is, the accommodating chamber 02 mentioned above; the first chamber, the second chamber and the third chamber can also be chambers connected to the accommodating chamber 02, and the specific settings are based on actual needs.

[0091] In some alternative embodiments, the first blade 210, the first knife part 221, the second knife part 222, and the third knife part 223 can be independently installed respectively, which is convenient for selecting blades of different types and directions according to the surgical needs to adapt to various complex periodontal surgical situations and is conducive to precise operation in a narrow periodontal surgical area.

[0092] Figure 13 The structural schematic diagram of the flap knife according to an embodiment of the present application is shown in reference to Figure 13 , the flap knife in the embodiment of the present application further includes an electrosurgical unit 700. The electrosurgical unit 700 includes a cable 710 for electrically connecting with the knife body 100. Specifically, a jack 05 is provided on the knife body 100, and the end of the cable 710 extends into the jack 05.

[0093] Based on the same technical concept, the embodiment of the present application further provides a flap taking method using the flap knife in various embodiments of the present application. The flap taking method includes the following steps:

[0094] Drive the annular blade 200 to extend out of the annular groove 01 through the telescopic driving mechanism 400, and make the height that the annular blade 200 extends out of the annular groove 01 be the first preset height, and use the annular blade 200 to cut the target tissue 10 of the patient; cut off the flap of the target tissue 10 with the blade-shaped scalpel, and suture the wound according to the surgical procedure.

[0095] Among them, making the height that the annular blade 200 extends out of the annular groove 01 be the first preset height can be specifically achieved by rotating the cutter head telescopic adjustment knob 130 to drive the annular blade 200 to telescopically move along the depth direction of the annular groove 01.

[0096] Among them, the flap taking can be divided into a flap with mucosa or a flap without mucosa. The above two flap taking methods will be described below with reference to the accompanying drawings.

[0097] First, with reference to Figures 14 to 19 , the flap taking method for the flap without mucosa will be described:

[0098] Control the first blade 210 to retract into the annular groove 01 by rotating the first telescopic adjustment knob, control the height that the second blade 220 extends out of the annular groove 01 to the first height by the second telescopic adjustment knob, and use the second blade 220 to cut the target tissue 10;

[0099] Control the second blade 220 to retract into the annular groove 01 by rotating the second telescopic adjustment knob, control the height that the first blade 210 extends out of the annular groove 01 to the second height by the first telescopic adjustment knob, and adjust the first blade 210 to be parallel to the first surface by the first knob. Then, use the first blade 210 to separate the target mucosa 11 from the tissue below the target mucosa 11;

[0100] Control the second blade 220 to extend out of the annular groove 01 and reach the third height by rotating the second telescopic adjustment knob, control the first blade 210 to extend out of the annular groove 01 to the third height by the first telescopic adjustment knob, the first blade 210 and the second blade 220 are spliced to form an annular blade 200, use forceps to lift the target mucosa 11, and then use the annular blade 200 to cut the target tissue 10;

[0101] Control the second blade 220 to retract into the annular groove 01 by rotating the second telescopic adjustment knob, control the first blade 210 to extend out of the annular groove 01 to the second height by the first telescopic adjustment knob, and adjust the first blade 210 to be parallel to the first surface of the tool head 110 by the first knob. Then, use the first blade 210 to cut off the target flap 12;

[0102] Cover the wound with the target mucosa 11 and suture the wound according to the surgical procedure.

[0103] The method for taking the flap without mucosa is described above. Please refer to Figures 20 to 23 below to describe the method for taking the flap with mucosa:

[0104] Control the second blade 220 to extend out of the annular groove 01 and reach the fourth height by rotating the second telescopic adjustment knob, control the first blade 210 to extend out of the annular groove 01 to the fourth height by the first telescopic adjustment knob, the first blade 210 and the second blade 220 are spliced to form an annular blade 200, and use the annular blade 200 to cut the target tissue 10;

[0105] Control the second blade 220 to retract into the annular groove 01 by rotating the second telescopic adjustment knob, control the first blade 210 to extend out of the annular groove 01 to the fifth height by the first telescopic adjustment knob, and adjust the first blade 210 to be parallel to the first surface of the tool head 110 by the first knob. Then, use the first blade 210 to cut off the target flap 12 with mucosa;

[0106] Cover the wound with a collagen membrane 20 and suture the wound according to the surgical procedure.

[0107] In summary, the flap-taking knife and the flap-taking method in various possible embodiments of the present application have the following advantages:

[0108] 1) Reduce technical difficulty: The telescopic design of the annular blade 200 makes it easier for the surgeon to control the surgical operation, reduces the requirements for the surgeon's technical level, and even surgeons with relatively little experience can perform the surgical operation more accurately.

[0109] 2) Reduce bleeding: Precise control of the depth of the tool head 110 can effectively avoid damaging blood vessels. At the same time, increasing the electrocoagulation component 600 can reduce bleeding during the operation, maintain a clear surgical field of view, and is conducive to the smooth progress of the operation.

[0110] 3) Reduce postoperative discomfort: The precise operation on tissues and less trauma during the operation help reduce postoperative discomfort symptoms such as pain, bleeding, and local hematoma in patients, and minimize the discomfort of patients as much as possible.

[0111] 4) Improve surgical adaptability: The first blade 210, the first knife part 221, the second knife part 222, and the third knife part 223 can be independently installed and the height and cutting angle extending out of the annular groove 01 can be adjusted as needed, enabling the surgical knife to adapt to various types and complexities of periodontal flap surgeries, improving the surgical efficiency and quality.

[0112] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. A valve extraction knife, characterized in that, It includes a blade body and an annular blade, and the blade body is provided with an annular groove for mounting the annular blade; A telescopic driving mechanism is arranged inside the blade body. The telescopic driving mechanism is used to drive the annular blade to extend out of or retract into the annular groove, and is used to adjust the height of the annular blade extending out of the annular groove.

2. The valve extraction knife according to claim 1, wherein, The blade body includes a blade head and a handle connected to the blade head, and the blade head is detachably connected to the handle; The annular groove is arranged on the blade head, and the shape of the annular blade includes a circular ring, a double-arc ring, a triangular ring, a rectangular ring, a rhombic ring and an irregular ring.

3. The valve extraction knife according to claim 1 or 2, characterized in that, The annular blade includes a first cutting edge and a second cutting edge, and the annular blade has at least a first working position and a second working position; wherein, When the annular blade is in the first working position, both the first cutting edge and the second cutting edge extend out of the annular groove and are spliced to form the annular blade; When the annular blade is in the second working position, the first cutting edge extends out of the annular groove, and the second cutting edge remains in the annular groove.

4. The valve extraction knife according to claim 3, wherein, The first cutting edge is a blade-shaped cutting edge, and the first cutting edge is arranged at the top of the side surface of the blade body; A first angle adjusting mechanism is arranged inside the blade body. When the first cutting edge extends out of the annular groove, the first angle adjusting mechanism is used to adjust the cutting angle of the first cutting edge.

5. The valve extraction knife according to claim 4, characterized in that, The annular blade is arranged on the first surface of the blade head, wherein the cutting angle of the first cutting edge at least includes a first angle and a second angle; When the first cutting edge is at the first angle, the first cutting edge is perpendicular to the first surface; when the first cutting edge is at the second angle, the first cutting edge is parallel to the first surface.

6. The valve extraction knife according to claim 4, wherein The first angle adjusting mechanism includes a first mounting seat, a first rotating shaft and a first knob. The blade head includes a first chamber, and the first chamber is communicated with the annular groove. The first mounting seat is arranged in the first chamber. The first cutting edge is rotatably connected to the first mounting seat through the first rotating shaft. The first knob is arranged on the side surface of the blade head, and the first knob is in transmission connection with the first rotating shaft.

7. The valve extraction knife according to claim 3, characterized in that, The second cutting edge includes a first knife part, a second knife part and a third knife part. The first knife part and the third knife part are arranged oppositely, the first cutting edge and the second knife part are arranged oppositely, and the first cutting edge, the first knife part, the second knife part and the third knife part are sequentially spliced to form a rectangular annular blade; A second angle adjusting mechanism and a third angle adjusting mechanism are arranged inside the blade body. The second angle adjusting mechanism is used to adjust the cutting angle of the first knife part, and the third angle adjusting mechanism is used to adjust the cutting angle of the third knife part, so that the first knife part and the third knife part approach or separate from each other.

8. The valve extraction knife according to claim 7, wherein, The second angle adjusting mechanism includes a second mounting seat, a second rotating shaft and a second knob. The blade head includes a second chamber, and the second chamber is communicated with the annular groove. The second mounting seat is arranged in the second chamber. The first knife part is rotatably connected to the second mounting seat through the second rotating shaft. The second knob is arranged on the side surface of the blade head, and the second knob is in transmission connection with the second rotating shaft; The third angle adjustment mechanism includes a third mounting seat, a third rotating shaft, and a third knob. The cutter head includes a third chamber, and the third chamber communicates with the annular groove. The third mounting seat is disposed in the third chamber. The third cutter part is rotatably connected to the third mounting seat through the second rotating shaft. The third knob is disposed on the side of the cutter head, and the third knob is in transmission connection with the third rotating shaft.

9. The valve extraction knife according to claim 2, characterized in that, The cutter head is provided with a lighting lamp, and / or the flap-taking cutter includes an electrocoagulation component disposed on the cutter body, and the electrocoagulation component is used for monopolar coagulation or bipolar coagulation.

10. The valve extraction knife according to any one of claims 1-9, characterized in that, The telescopic driving mechanism includes a telescopic rod, a telescopic adjustment component, and a steering component disposed in the cutter body. The telescopic rod extends along the axial direction of the cutter body. The telescopic adjustment component is used to drive the telescopic rod to move along the axial direction of the cutter body. The telescopic rod is connected to the annular blade through the steering component, so that the telescopic rod can drive the annular blade to expand and contract along the depth direction of the annular groove through the steering component.

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