Adjustable LEEP knife and adjustment method

Abstract

The present invention relates to the field of medical device technology, and specifically to an adjustable LEEP knife and an adjustment method, comprising a knife handle, a knife head and an electric cutting wire, wherein the knife head is connected to the knife handle; an electrode sheet and a conductive member are arranged in the knife handle, wherein the electrode sheet is electrically connected to the conductive member, wherein the electrode sheet is connected to the electric cutting wire, wherein the electric cutting wire passes through the two ends of the knife head, and the electric cutting wire and the outer side of the knife head form a cutting ring; guide grooves are provided on both sides of the support member of the knife head for accommodating a movable adjusting member, wherein the movable adjusting member and the support member are slidably matched, and the spacing between the terminal blocks on the two movable adjusting members is changed by controlling the sliding of the movable adjusting member in the guide groove of the support member, and the spacing between the terminal blocks controls the cutting width of the cutting ring. The present invention changes the spacing between the two ends of the electric cutting wire on the knife head by sliding two movable adjusting members outward, so that the electric cutting wire can adapt to lesions of different widths during use, thereby improving the flexibility and accuracy of cutting.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an adjustable LEEP knife and an adjustment method thereof. Background Art

[0002] The LEEP knife is a metal coil that uses the high-frequency current generated by the coil to cut cervical tissue to remove lesions. It uses a series of ring-shaped tungsten wire electrodes to generate 3.8MHZ high-frequency electric waves through the electrode tips, which instantly generate high heat after contacting the cervical tissue, causing the water in the cells to form steam waves to complete various surgical purposes such as cutting and hemostasis.

[0003] The principle of LEEP knife is different from that of traditional electric knife. Traditional electric knife achieves the purpose of surgery by using the impedance of the electrode itself and generating high heat due to the passage of electric current. The output frequency is 0.3-1.0MHZ, while the heat energy converted by radio frequency of high-frequency electric wave knife is generated inside the tissue. The sine wave generated by radio frequency causes the water in the cells to oscillate and generate heat and evaporate, causing the cells to rupture and the tissue to separate. The radio frequency emitter itself does not generate heat, so it is an advanced professional technology currently used specifically for minimally invasive diagnosis and treatment of cervical diseases.

[0004] Loop electrosurgical excision of the cervix refers to the doctor using the high-frequency energy generated by the high-frequency electric knife to quickly remove the diseased tissue in the cervix. Generally, less tissue is removed and the amount of bleeding is less. It is mainly suitable for the treatment of chronic cervicitis, cervical condyloma, cervical intraepithelial neoplasia or cervical intraepithelial neoplasia combined with condyloma and cervical carcinoma in situ.

[0005] This method conducts high-frequency alternating current through a circular metal wire, and uses the unique drying and dehydration effect and arc cutting effect of high-frequency current to quickly cut the tissue contacted by the electrode.

[0006] When using a LEEP knife for circumcision, since the shape and size of the cut required for each patient are different, it is necessary to replace the blade head of different models for accurate cutting. The blade head needs to be replaced before each use, which makes the preparation work before use more cumbersome. In addition, each model of blade head cannot cover all sizes, so it is impossible to accurately select a more suitable blade head. Summary of the invention

[0007] The first aspect of the present invention aims to solve the technical problem that different types of LEEP knives need to be disassembled and replaced before surgery, which causes troublesome operation. An adjustable LEEP knife is provided, which can change the distance between the two ends of the electric cutting wire by setting a movable adjustment member, so that the ring-shaped electric cutting wire can accurately adapt to lesions of different widths for resection. The main concept is:

[0008] A novel LEEP knife comprises a handle, a knife head and an electric cutting wire, wherein the knife head is connected to the handle; an electrode sheet and a conductive member are arranged in the knife handle, wherein the electrode sheet is electrically connected to the conductive member, wherein the electrode sheet is connected to the electric cutting wire, wherein the electric cutting wire passes through two ends of the knife head, and the electric cutting wire and the outer side of the knife head form a cutting ring; wherein the knife head comprises a support member and two movable adjusting members, wherein guide grooves are arranged on both sides of the support member for accommodating the movable adjusting member, wherein the movable adjusting member and the support member are slidably matched, and wherein the movable adjusting member is transmission-connected to a driving assembly; wherein wiring heads are arranged at the ends of the two movable adjusting members, wherein the wiring heads are connected to two ends of the electric cutting wire, wherein the sliding of the movable adjusting member in the guide groove of the support member is controlled by the driving assembly, and the spacing between the wiring heads on the two movable adjusting members is changed, and wherein the spacing between the wiring heads controls the cutting width of the cutting ring; wherein the movable adjusting member comprises a wiring groove, wherein the wiring groove is connected to the wiring head, wherein the wiring head fixes the electric cutting wire, and wherein a 15-25 mm electric Wire cutting; or, also includes a winding disk and an automatic wire adjusting component, the winding disk and the automatic wire adjusting component are arranged at a position between the electrode sheet and the movable adjusting part, the winding disk is installed on the support part, the automatic wire adjusting component is installed on the movable adjusting part, the movable adjusting part is provided with a wiring groove for accommodating the automatic wire adjusting component, the electric wire is bundled by rotating the winding disk, and the electric wire is pushed toward the wiring head by the automatic wire adjusting component; the automatic wire adjusting component includes a fixed block, a spring and a movable block, the fixed block is fixed in the wiring groove provided by the movable adjusting part, the fixed block is connected to the movable block through the spring, and the movable block slides in the wiring groove; the electric wire cutting includes a tungsten wire and a winding conductor, the tungsten wire is connected to the movable block through the spring from the wiring head; the winding conductor connects the movable block and the electrode sheet; the length of the winding conductor is greater than the sum of the distances between the movable block and the electrode sheet; the winding conductor is wound on the winding disk; the movable block is a conductive material, and the tungsten wire and the winding conductor are electrically connected through the movable block.The present invention provides guide grooves at both ends of the support member, and installs the movable adjusting member in the guide grooves for sliding fit, and installs the electric cutting wire at the position of the terminal head at the outer end of the movable adjusting member. When the two movable adjusting members slide outward, the distance between the terminal heads increases continuously, so that the electric cutting wire positioned on the terminal heads extends outward, so that the width of the cutting ring formed by the electric cutting wire increases, and by changing the spacing between the two ends of the electric cutting wire on the blade head, the electric cutting wire can adapt to lesions of different widths during use, thereby improving the flexibility and accuracy of cutting; when the terminal head is fixed to the electric cutting wire, the terminal head is used to fix the electric cutting wire so that the electric cutting wire can keep the two ends positioned during use, so that the electric cutting wire of the cutting ring formed by the external part can be stably tightened, and the electric cutting wire of a certain length reserved in the terminal groove can make the electric cutting wire in the terminal groove and the electric cutting wire in the terminal groove close to each other when the movable adjusting member moves. The electric cutting wire connected to the electrode piece will not affect the sliding of the movable adjusting part in the outward direction due to insufficient length; when the terminal head is movably connected to the electric cutting wire, the electric cutting wire is divided into tungsten wire and winding wire, tungsten wire is used as the material for constituting the cutting ring, the tungsten wire and the winding wire are electrically connected through a movable block made of conductive material, and a wiring slot equipped with an automatic wire adjusting component is used as an adjusting chamber for adjusting the length of the tungsten wire. The spring adopts a compression spring. After the winding reel is unwound, the winding wire releases a certain length, so that the movable block loses the constraint of the winding wire when it is straightened. The movable block slides in the direction close to the fixed block under the resetting force of compression, so that the tungsten wire connected to one end of the movable block close to the fixed block is output to the terminal head position. This solution can also solve the technical problem that the distance between the movable adjusting parts of the electric cutting wire is too large, which will cause the height of the cutting ring to be too low, affecting the cutting effect.

[0009] Preferably, the movable adjusting member is connected to the adjusting screw rod by transmission, the adjusting screw rod comprises a screw rod and a movable nut matched with the screw rod thread, a screw rod positioning groove and a nut mounting groove are arranged inside the movable adjusting member, the screw rod is inserted into the screw rod positioning groove, the movable nut is embedded in the nut mounting groove, the axial movement direction of the movable nut in the nut mounting groove is constrained, and the movable nut and the movable adjusting member are synchronously moved linearly by rotating the screw rod. The movable adjusting member is driven by the adjusting screw rod, and a screw rod positioning groove and a nut mounting groove for adjusting the screw rod installation are opened in the middle position of the movable adjusting member, the screw rod positioning groove is used to reserve a rotation space for the installation of the screw rod, the inner wall of the screw rod positioning groove does not contact the screw rod, the inner diameter of the nut mounting groove is larger than the inner diameter of the screw rod positioning groove, and the axial two sides of the nut mounting groove are provided with limiting end faces, and the limiting end faces of the nut mounting groove are closely abutted with the two end faces of the movable nut, so that when the movable nut is installed in the nut mounting groove, when the movable nut moves axially along the screw rod, under the constraint of the nut mounting groove, the movable adjusting member and the movable nut move synchronously.

[0010] The second aspect of the present invention aims to solve the technical problem that it is difficult to judge the increased spacing when adjusting the movable adjusting member, resulting in poor width adjustment accuracy. Furthermore, a limit boss is provided at the outer end of the movable adjusting member, and the limit boss and the support member are limitedly matched, and the outer wall of the movable adjusting member is provided with scale lines, and the scale lines use the limit surface of the limit boss as the reference scale line. The present solution sets the limit boss at the outer end of the movable adjusting member. On the one hand, it can limit the distance that the movable adjusting member slides toward the inside along the guide groove in the support member, and can protect the terminal head from colliding with the support member, thereby avoiding damage to the terminal head; on the other hand, the limit surface where the limit boss and the support member are limitedly abutted is used as the reference scale line, so that the scale lines set on the outer wall of the movable adjusting member have a reference, which is convenient for calculating the distance that the movable adjusting member slides outward.

[0011] Preferably, the adjusting screw includes a screw gear and a mounting seat, the mounting seat is installed on the inner side of the guide groove, the adjusting screw is stably mounted in the guide groove through the rolling bearing of the mounting seat, the screw gear is arranged at the end position where the screw extends to the outside of the guide groove, and the screw gear is transmission connected to the driving assembly.

[0012] The third aspect of the present invention aims to solve the technical problem of poor adjustment synchronization performance of the movable adjustment parts at both ends of the support. Furthermore, the driving assembly includes a gear set and a sliding rack, the gear set is meshed with the sliding rack, and the sliding rack linearly moves to drive the gear set to rotate; the gear set includes a coaxially arranged coupling gear and a side gear, and the side gears are symmetrically installed on both sides of the coupling gear through the rotating shaft, the coupling gear is meshed with the sliding rack, and the side gear is meshed with the screw gear. By driving the sliding rack to move linearly, the coupling gear meshed with the sliding rack and the side gear synchronized with the coupling gear are rotated, and the side gear drives the screw gear to rotate and then drives the adjusting screw.

[0013] Preferably, the support member also includes an adjustment cavity and a sliding guide rail. The adjustment cavity is opened in the middle position of the support member. The adjustment cavity is used to accommodate the transmission movement of the drive component. The adjustment cavity is installed with a positioning frame, and the positioning frame is installed with the rotating shaft of the gear set. The sliding guide rail is opened on the side wall of the adjustment cavity, and the sliding guide rail is used to make the sliding rack move linearly.

[0014] Preferably, the movable adjusting member further comprises a wiring slot, the wiring slot is connected to a wiring head, the wiring head fixes the electric cutting wire, and a certain length of the electric cutting wire is reserved in the wiring slot. The wiring head is used to fix the electric cutting wire so that the electric cutting wire can keep both ends positioned when in use, so that the electric cutting wire of the cutting ring formed by the external part can be stably tightened, and the certain length of the electric cutting wire reserved in the wiring slot can ensure that when the movable adjusting member moves, the electric cutting wire connected to the electrode sheet in the wiring slot will not affect the sliding of the movable adjusting member in the outward direction due to insufficient length.

[0015] A method for adjusting an adjustable LEEP knife comprises the following steps:

[0016] S1. Apply diluted acetic acid solution on the cervix, and then apply iodine solution to make the cervical lesions more obvious;

[0017] S2, inserting a colposcope into the vagina for inspection, the colposcope is electrically connected to the image processing system, the colposcope performs image recognition and detection on the affected part of the patient's body and sends the detection information and image to the image processing system, the image processing system converts the recognized detection information into digital information, and the image processing system displays the detected image;

[0018] S3, the image processing system combines the digital information with the image calculation and analysis to determine the cutting ring size of the LEEP knife that is most suitable for cutting the patient's affected area;

[0019] S4. Cutting ring width adjustment: by pushing the sliding rack to slide on the sliding guide rail of the cutter head, the screw gear at the end of the adjusting screw is driven to rotate under the action of the gear set connected to the sliding rack, and the screw gear rotates to drive the screw to rotate so that the movable adjusting member that moves synchronously with the moving nut slides outward along the guide groove of the support member; when adjusting, observe the scale line on the outer wall of the movable adjusting member to adjust it to a suitable position to adjust the cutting ring width;

[0020] S5. Adjustment of the arc length of the cutting ring: The winding wire arranged inside is unwound by rotating the winding disk. The unwound winding wire is tightened toward the terminal head under the action of the spring of the automatic wire adjustment assembly. The movable block connected to the spring pushes the tungsten wire constituting the cutting ring to the outside of the terminal head, so that the arc length of the cutting ring is increased. Under the elastic action of the electric cutting wire, the arc length of the electric cutting wire is increased, so that the height of the electric cutting wire is increased;

[0021] S6. After the size adjustment of the cutting ring is completed, the cutter head is installed on the cutter handle, and the cutter handle is installed on the multifunctional ion diagnosis and treatment machine and energized through the conductive parts.

[0022] The beneficial effects of the present invention are as follows: by providing guide grooves at both ends of the support member, and installing the movable adjusting member in the guide grooves for sliding fit, the electric cutting wire is installed at the position of the terminal head at the outer end of the movable adjusting member. When the two movable adjusting members slide outward, the distance between the terminal heads increases continuously, so that the electric cutting wire positioned on the terminal heads extends outward, thereby increasing the width of the cutting ring formed by the electric cutting wire. By changing the spacing between the two ends of the electric cutting wire on the blade head, the electric cutting wire can adapt to lesions of different widths during use, thereby improving the flexibility and accuracy of cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0024] Figure 2 It is a partial side view of the structure of the drive assembly of the present invention.

[0025] Figure 3 The structure of the present invention is schematically shown Figure 2 .

[0026] Figure 4 It is a structural schematic diagram of the automatic line adjustment component of the present invention.

[0027] The accompanying drawings include: 1. tool handle; 11. electrode sheet; 12. conductive member; 2. tool head; 21. support member; 211. guide groove; 212. adjustment chamber; 213. sliding guide rail; 214. positioning frame; 22. movable adjustment member; 221. limiting boss; 222. screw positioning groove; 223. nut mounting groove; 224. wiring groove; 23. wiring head; 3. electric wire cutting; 31. cutting ring; 32. winding wire; 4. adjusting screw; 41. screw; 42. movable nut; 43. screw gear; 44. mounting seat; 5. driving assembly; 51. gear set; 511. coupling gear; 512. side gear; 52. sliding rack; 6. winding reel; 7. automatic wire adjustment assembly; 71. fixed block; 72. spring; 73. movable block. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0029] It should be noted that all actions to obtain signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located, and with the authorization given by the owner of the corresponding device.

[0030] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own contours. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance.

[0031] Example 1

[0032] like Figure 1-Figure 2As shown, a new type of LEEP knife in this embodiment includes a handle 1, a blade head 2 and an electric cutting wire 3, wherein the blade head 2 is connected to the handle 1; an electrode sheet 11 and a conductive member 12 are arranged in the handle 1, wherein the electrode sheet 11 is electrically connected to the conductive member 12, wherein the electrode sheet 11 is connected to the electric cutting wire 3, wherein the electric cutting wire 3 passes through both ends of the blade head 2, and the electric cutting wire 3 and the outer side of the blade head 2 form a cutting ring 31; the blade head 2 includes a support member 21 and two movable adjustment members 22, wherein guide grooves 211 are provided on both sides of the support member 21 for accommodating the movable adjustment members 22, wherein the movable adjustment members 22 are slidably matched with the support member 21, and the movable adjustment members 22 are transmission-connected with the driving assembly 5; both ends of the two movable adjustment members 22 are provided with wiring heads 23, wherein the wiring heads 23 are connected to both ends of the electric cutting wire 3, wherein the sliding of the movable adjustment members 22 in the guide grooves 211 of the support member 21 is controlled by the driving assembly 5, thereby changing the spacing between the wiring heads 23 on the two movable adjustment members 22, and the spacing between the wiring heads 23 controls the cutting width of the cutting ring 31.

[0033] By opening guide grooves 211 at both ends of the support member 21, and installing the movable adjusting member 22 in the guide grooves 211 for sliding fit, the electric cutting wire 3 is installed at the position of the terminal head 23 at the outer end of the movable adjusting member 22. When the two movable adjusting members 22 slide outward, the distance between the terminal heads 23 increases continuously, so that the electric cutting wire 3 positioned on the terminal heads 23 extends outward, so that the cutting width of the cutting ring 31 formed by the electric cutting wire 3 is increased. By changing the spacing between the two ends of the electric cutting wire 3 on the blade head 2, the electric cutting wire 3 can adapt to lesions of different widths during use, thereby improving the flexibility and accuracy of cutting.

[0034] like Figure 1As shown, the movable adjusting member 22 is transmission-connected with the adjusting screw 4, and the adjusting screw 4 includes a screw 41 and a movable nut 42 threadably matched with the screw 41. A screw positioning groove 222 and a nut mounting groove 223 are provided inside the movable adjusting member 22. The screw 41 is inserted into the screw positioning groove 222, and the movable nut 42 is embedded in the nut mounting groove 223. The axial movement direction of the movable nut 42 in the nut mounting groove 223 is constrained, and the movable nut 42 and the movable adjusting member 22 are linearly moved synchronously by rotating the screw 41. The movable adjusting member 22 is transmitted through the adjusting screw 4, and a screw positioning groove 222 and a nut mounting groove 223 for installing the adjusting screw 4 are opened in the middle position of the movable adjusting member 22, the screw positioning groove 222 reserves a rotation space for the installation of the screw 41, the inner wall of the screw positioning groove 222 does not contact the screw 41, the inner diameter of the nut mounting groove 223 is larger than the inner diameter of the screw positioning groove 222, and limiting end faces are provided on both axial sides of the nut mounting groove 223, the limiting end faces of the nut mounting groove 223 are tightly abutted against the two end faces of the movable nut 42, so that when the movable nut 42 is installed in the nut mounting groove 223, when the movable nut 42 moves axially along the screw 41, under the constraint of the nut mounting groove 223, the movable adjusting member 22 and the movable nut 42 move synchronously.

[0035] like Figure 1 As shown, a limiting boss 221 is provided at the outer end of the movable adjusting member 22, and the limiting boss 221 is limitedly matched with the support member 21, and a scale line is provided on the outer wall of the movable adjusting member 22, and the scale line uses the limiting surface of the limiting boss 221 as the reference scale line. In this scheme, the limiting boss 221 is provided at the outer end of the movable adjusting member 22. On the one hand, it can limit the distance that the movable adjusting member 22 slides toward the inside along the guide groove 211 in the support member 21, and can protect the terminal head 23 from colliding with the support member 21, thereby avoiding the terminal head 23 from being damaged; on the other hand, the limiting surface where the limiting boss 221 is limitedly abutted with the support member 21 is used as the reference scale line, so that the scale line set on the outer wall of the movable adjusting member 22 has a reference, which is convenient for calculating the distance that the movable adjusting member 22 slides outward.

[0036] This embodiment uses the reference scale line as the zero scale line.

[0037] The adjusting screw 4 includes a screw gear 43 and a mounting seat 44, wherein the mounting seat 44 is mounted on the inner side of the guide groove 211, and the adjusting screw 4 is stably mounted on the guide groove 211 through the rolling bearing of the mounting seat 44, and the screw gear 43 is arranged at the end position where the screw 41 extends to the outside of the guide groove 211, and the screw gear 43 is transmission-connected with the driving assembly 5.

[0038] Example 2

[0039] like Figure 2 As shown, the driving assembly 5 of this embodiment includes a gear set 51 and a sliding rack 52. The gear set 51 is meshed with the sliding rack 52. The sliding rack 52 moves linearly to drive the gear set 51 to rotate. The gear set 51 includes a coaxially arranged coupling gear 511 and a side gear 512. The side gears 512 are symmetrically installed on both sides of the coupling gear 511 through a rotating shaft. The coupling gear 511 is meshed with the sliding rack 52, and the side gear 512 is meshed with the screw gear 43. By driving the sliding rack 52 to move linearly, the coupling gear 511 meshed with the sliding rack 52 and the side gear 512 synchronized with the coupling gear 511 rotate, and the side gear 512 drives the screw gear 43 to rotate and then drives the adjusting screw 4.

[0040] like Figure 1-Figure 2 As shown, the support member 21 of this embodiment also includes an adjustment cavity 212 and a sliding guide rail 213. The adjustment cavity 212 is opened in the middle position of the support member 21. The adjustment cavity 212 is used to accommodate the transmission movement of the drive component 5. The adjustment cavity 212 is installed with a positioning frame 214. The positioning frame 214 is installed with the rotating shaft of the gear set 51. The sliding guide rail 213 is opened on the side wall of the adjustment cavity 212 of the support member 21. The sliding guide rail 213 is used to make the sliding rack 52 move linearly.

[0041] like Figure 1-Figure 4 As shown, the movable adjusting member 22 further includes a wiring slot 224 , the wiring slot 224 is connected to the wiring head 23 , the wiring head 23 fixes the electric cutting wire 3 , and a certain length of the electric cutting wire 3 is reserved in the wiring slot 224 .

[0042] The terminal head 23 is used to fix the electric cutting wire 3 so that the electric cutting wire 3 can keep both ends positioned when in use, so that the electric cutting wire 3 formed by the cutting ring 31 of the external part can be stably tightened, and the electric cutting wire 3 of a certain length reserved in the terminal slot 224 can ensure that when the movable adjusting part 22 moves, the electric cutting wire 3 connected to the electrode sheet 11 in the terminal slot 224 will not affect the sliding of the movable adjusting part 22 in the outward direction due to insufficient length.

[0043] The electric cutting wire 3 reserved in the wiring slot 224 is a conductive metal wire with a certain toughness, so that the conductive metal wire can be electrically connected to the electric cutting wire constituting the cutting ring 31 at the position of the wiring head 23 .

[0044] Example 3

[0045] like Figure 3-Figure 4As shown, it also includes a winding disk 6 and an automatic wire adjusting component 7, and the winding disk 6 and the automatic wire adjusting component 7 are arranged between the electrode sheet 11 and the movable adjusting member 22. The winding disk 6 is installed on the support member 21, and the automatic wire adjusting component 7 is installed on the movable adjusting member 22. The movable adjusting member 22 is provided with a wiring groove 224 for accommodating the automatic wire adjusting component 7. The electric cut wire 3 is gathered by rotating the winding disk 6, and the electric cut wire 3 is pushed toward the wiring head 23 by the automatic wire adjusting component 7.

[0046] The winding reel 6 of this embodiment is composed of a central axis and a rotatable reel. In one embodiment, the reel can be equipped with a rotating handle extending to the outside of the support 21, so that the winding reel 6 can be adjusted by rotating the handle; the movable adjustment member 22 and the electric wire 3 are retracted to the initial state, so that the side of the rotating handle when the winding reel 6 cannot be wound and rotated is the initial position, and then the initial position is set to zero scale, and an annular scale line is drawn along the zero scale with the reel as the axis. The annular scale line can be expressed by angle. The angle of rotation of the rotating handle and the length of the electric wire 3 released can be compared in the early stage of equipment design, and an angle-length comparison table can be made, so that the length released by the winding reel through the rotating handle can be accurately controlled.

[0047] The automatic line adjustment assembly 7 includes a fixed block 71 , a spring 72 and a movable block 73 . The fixed block 71 is fixed in a wiring slot 224 provided in the movable adjustment member 22 . The fixed block 71 is connected to the movable block 73 via the spring 72 . The movable block 73 slides in the wiring slot 224 .

[0048] The electric cutting wire 3 includes a tungsten wire and a winding conductor 32. The tungsten wire passes through a spring 72 from a terminal head 23 and is connected to a movable block 73. The winding conductor 32 connects the movable block 73 and the electrode sheet 11. The length of the winding conductor 32 is greater than the sum of the distances between the movable block 73 and the electrode sheet 11. The winding conductor 32 is wound on a winding reel 6. The movable block 73 is a conductive material, and the tungsten wire and the winding conductor 32 are electrically connected through the movable block 73.

[0049] In this embodiment, the wiring head 23 is set as a non-fixed structure, so that the wiring head 23 can make the electric cutting wire 3 slide up and down inside it, thereby realizing the adjustment of the arc length of the electric cutting wire.

[0050] The electric cutting wire is divided into tungsten wire and winding wire 32. Tungsten wire is used as the material for forming the cutting ring 31. The tungsten wire and the winding wire 32 are electrically connected through a movable block 73 made of conductive material. The wiring slot 224 equipped with the automatic wire adjustment component 7 is used as an adjustment chamber for adjusting the length of the tungsten wire. The spring 72 of this embodiment adopts a compression spring. When the winding disk 6 is unwinding, the winding wire 32 releases a certain length, so that the movable block 73 loses the constraint of the winding wire 32 when it is straightened. The movable block 73 slides in the direction close to the fixed block 71 under the reset force of the compression spring, so that the tungsten wire connected to one end of the movable block 73 close to the fixed block 71 is output to the position of the wiring head 23.

[0051] The winding conductor 32 includes a fixed wire and a movable wire. The fixed wire is used to connect the electrode sheet 11 and the conductive part of the winding drum 6. The conductive part of the winding drum 6 will not move as the winding drum 6 rotates. The fixed wire always maintains a certain length. One end of the movable wire is connected to the conductive part of the winding drum 6. A part of the length of the movable wire is wound around the winding drum 6. The other end of the movable wire is connected to the movable block 73.

[0052] In this embodiment, when no power is supplied, if the tungsten wire gets stuck when moving toward the terminal head 23, the tungsten wire can be manually pulled out with the aid of a sterile clamp, thereby making the adjustment flexibility of the LEEP knife stronger.

[0053] A method for adjusting an adjustable LEEP knife comprises the following steps:

[0054] S1. Apply diluted acetic acid solution on the cervix, and then apply iodine solution to make the cervical lesions more obvious;

[0055] S2, inserting a colposcope into the vagina for inspection, the colposcope is electrically connected to the image processing system, the colposcope performs image recognition and detection on the affected part of the patient's body and sends the detection information and image to the image processing system, the image processing system converts the recognized detection information into digital information, and the image processing system displays the detected image;

[0056] S3, the image processing system combines the digital information with the image calculation and analysis to obtain the size of the cutting ring 31 of the LEEP knife that is most suitable for cutting the patient's affected area;

[0057] S4, adjusting the width of the cutting ring 31: by pushing the sliding rack 52 to slide on the sliding guide rail 213 of the cutter head 2, the screw gear 43 at the end of the adjusting screw rod 4 is driven to rotate under the action of the gear group 51 connected to the sliding rack 52, and the screw gear 43 rotates to drive the screw rod 41 to rotate so that the movable adjusting member 22 that moves synchronously with the moving nut 42 slides outward along the guide groove 211 of the support member 21; when adjusting, observe the scale line on the outer wall of the movable adjusting member 22 to adjust it to a suitable position, and adjust the width of the cutting ring 31;

[0058] S5, adjusting the arc length of the cutting ring 31: the winding wire 32 arranged inside is unwound by rotating the winding disk 6, and the unwound winding wire 32 is tightened toward the terminal head 23 under the action of the spring 72 of the automatic wire adjustment assembly 7, and the movable block 73 connected to the spring 72 pushes the tungsten wire constituting the cutting ring 31 to the outside of the terminal head 23, so that the arc length of the cutting ring 31 increases. Under the elastic action of the electric cutting wire 3, the arc length of the electric cutting wire 3 increases, so that the height of the electric cutting wire increases;

[0059] S6. After the size adjustment of the cutting ring is completed, the cutter head 2 is installed on the cutter handle 1, and the cutter handle 1 is installed on the multifunctional ion diagnosis and treatment machine and energized through the conductive part 12.

[0060] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An adjustable LEEP knife, Features: It comprises a knife handle (1), a knife head (2) and an electric wire cutter (3), wherein the knife head (2) is connected to the knife handle (1); An electrode sheet (11) and a conductive member (12) are provided in the knife handle (1), the electrode sheet (11) and the conductive member (12) are electrically connected, the electrode sheet (11) is connected to an electric cutting wire (3), the electric cutting wire (3) passes through two ends of the knife head (2), and the electric cutting wire (3) and the outer side of the knife head (2) form a cutting ring (31); The cutter head (2) comprises a support member (21) and two movable adjustment members (22); guide grooves (211) are provided on both sides of the support member (21) for accommodating the movable adjustment members (22); the movable adjustment members (22) are slidably matched with the support member (21); and the movable adjustment members (22) are drivingly connected to the driving assembly (5); The ends of the two movable adjustment members (22) are provided with connection heads (23), the connection heads (23) are connected to the two ends of the electric cutting wire (3), and the movable adjustment member (22) is controlled to slide in the guide groove (211) of the support member (21) by the driving component (5), so as to change the spacing between the connection heads (23) on the two movable adjustment members (22), and the spacing between the connection heads (23) controls the cutting width of the cutting ring (31); The movable adjusting member (22) comprises a wiring groove (224), the wiring groove (224) is connected to the wiring head (23), the wiring head (23) fixes the electric cutting wire (3), and a 15-25 mm electric cutting wire (3) is reserved in the wiring groove (224); or, It also includes a winding disk (6) and an automatic wire adjustment component (7), wherein the winding disk (6) and the automatic wire adjustment component (7) are arranged between the electrode sheet (11) and the movable adjusting member (22), the winding disk (6) is mounted on the supporting member (21), and the automatic wire adjustment component (7) is mounted on the movable adjusting member (22), and the movable adjusting member (22) is provided with a wiring groove (224) for accommodating the automatic wire adjustment component (7), and the electric cut wire (3) is bundled by rotating the winding disk (6), and the electric cut wire (3) is pushed toward the wiring head (23) by the automatic wire adjustment component (7); The automatic wire adjustment assembly (7) comprises a fixed block (71), a spring (72) and a movable block (73); the fixed block (71) is fixed in a wiring groove (224) provided in the movable adjustment member (22); the fixed block (71) is connected to the movable block (73) via the spring (72); and the movable block (73) slides in the wiring groove (224); The electric cutting wire (3) comprises a tungsten wire and a winding wire (32); the tungsten wire passes through a spring (72) through a terminal head (23) and is connected to a movable block (73); the winding wire (32) is connected to the movable block (73) and the electrode sheet (11); the length of the winding wire (32) is greater than the sum of the distances between the movable block (73) and the electrode sheet (11); the winding wire (32) is wound on a winding reel (6); the movable block (73) is made of a conductive material, and the tungsten wire and the winding wire (32) are electrically connected via the movable block (73).

2. An adjustable LEEP knife according to claim 1, Features: The movable adjusting member (22) is in transmission connection with the adjusting screw (4); the adjusting screw (4) comprises a screw (41) and a movable nut (42) threadably matched with the screw (41); a screw positioning groove (222) and a nut mounting groove (223) are provided inside the movable adjusting member (22); the screw (41) is inserted into the screw positioning groove (222), and the movable nut (42) is embedded in the nut mounting groove (223); the axial movement direction of the movable nut (42) in the nut mounting groove (223) is constrained; and the movable nut (42) and the movable adjusting member (22) are linearly moved synchronously by rotating the screw (41).

3. The adjustable LEEP knife according to claim 1, Features: The outer end of the movable adjusting member (22) is provided with a limiting boss (221), the limiting boss (221) and the supporting member (21) are limited in position, and the outer wall of the movable adjusting member (22) is provided with scale lines, and the scale lines use the limiting surface of the limiting boss (221) as the reference scale line.

4. The adjustable LEEP knife according to claim 2, Features: The adjusting screw (4) comprises a screw gear (43) and a mounting seat (44); the mounting seat (44) is mounted on the inner side of the guide groove (211); the adjusting screw (4) is stably mounted on the guide groove (211) via a rolling bearing of the mounting seat (44); the screw gear (43) is arranged at the end position of the screw (41) extending outside the guide groove (211); and the screw gear (43) is in transmission connection with the driving assembly (5).

5. The adjustable LEEP knife according to claim 1, Features: The driving assembly (5) comprises a gear set (51) and a sliding rack (52), the gear set (51) meshing with the sliding rack (52), and the sliding rack (52) linearly moves to drive the gear set (51) to rotate; the gear set (51) comprises a coupling gear (511) and a side gear (512) arranged coaxially, the side gears (512) being symmetrically mounted on both sides of the coupling gear (511) via a rotating shaft, the coupling gear (511) meshing with the sliding rack (52), and the side gear (512) meshing with the screw gear (43).

6. An adjustable LEEP knife according to any one of claims 1 to 5, Features: The support member (21) further comprises an adjustment cavity (212) and a sliding guide rail (213); the adjustment cavity (212) is provided at a middle position of the support member (21); the adjustment cavity (212) is used to accommodate the transmission movement of the drive assembly (5); a positioning frame (214) is installed in the adjustment cavity (212); the positioning frame (214) is installed with a rotating shaft of the gear set (51); the sliding guide rail (213) is provided on a side wall of the adjustment cavity (212); and the sliding guide rail (213) is used to enable the sliding rack (52) to perform linear movement.

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