Suction LEEP knife

Abstract

The invention relates to the technical field of LEEP knives, in particular to a suction LEEP knife which comprises a knife head, a knife handle and a suction pump, the knife head is provided with a first channel, the knife handle is provided with a second channel, the first channel and the second channel form a suction channel, and the suction pump sucks air from a suction opening through the suction channel; the first channel comprises a smoke channel, cleaning channels and a confluence channel, the smoke channel is arranged in the middle of the tool bit, the cleaning channels are arranged at the two ends of the tool bit, the smoke channel and the cleaning channels are communicated with the confluence channel, and after the tool bit is connected with the tool handle, the confluence channel outputs smoke and substances received by channel connection to the second channel. The suction openings are formed in the scalpel head, the distance between the suction openings and the cervical tissue cutting position can be shortened, smoke and blood are sucked through reasonable distribution of the suction openings in the scalpel head, the suction effect is improved, the internal suction channel communicates with the suction pump arranged outside the scalpel handle, and the suction effect is improved. And a suction channel is not influenced when a doctor holds and uses the device.

Description

Technical Field

[0001] The present invention relates to the technical field of LEEP knives, and in particular to a suction LEEP knife. Background Art

[0002] The LEEP knife is a metal coil that cuts cervical tissue through the high-frequency current generated by the coil to achieve the purpose of removing lesions. It uses a series of ring-shaped tungsten wire electrodes to generate 3.8MHZ high-frequency electric waves through the tip of the electrode. After contacting the cervical tissue, it instantly generates high heat, causing the water in the cells to form a vapor wave to complete various surgical purposes such as cutting and hemostasis. The principle of the LEEP knife is different from that of the traditional electric knife. The traditional electric knife is based on the impedance of the electrode itself, and the high heat generated by the current passing through it is used to achieve the surgical purpose. The output frequency is 0.3-1.0MHZ, while the heat energy converted by the radio frequency of the high-frequency electric wave knife is generated inside the tissue. The sine wave generated by the radio frequency causes the water in the cells to vibrate and generate heat and evaporate, causing the cells to rupture and separate the tissue. The radio frequency emitter itself does not generate heat, so it is currently an advanced professional technology specifically used for minimally invasive diagnosis and treatment of cervical diseases.

[0003] 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.

[0004] 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.

[0005] When performing a cervical circular excision surgery, the smoke generated by the tungsten wire of the LEEP knife and the high temperature of the cervical tissue needs to be sucked out of the body through a suction structure to prevent the smoke from covering the cervical tissue and affecting the doctor's operating field of view. In order to facilitate smoking, the suction structure of the prior art is often set at the handle of the knife, and a smoking port is set at the end of the handle. An interface connected to the smoking port is set on the side wall of the handle, and a suction pipe is connected at the interface for suction. However, in the actual operation process, this method is very likely to cause the suction pipe to fall off at the interface when the doctor holds the handle to operate, and the smoking port set at the end of the handle is far away from the position of the cervical tissue actually cut by the knife head, resulting in poor smoking effect. In addition, the existing knife head does not have the function of sucking blood. When the wound surface is contaminated by bleeding, it is impossible to accurately find the bleeding point. Summary of the invention

[0006] The first aspect of the present invention aims to solve the problem that the smoking tube is very easy to fall off when the handle is set, the smoking effect is poor and the blood-sucking function is lacking. A smoking knife is provided. By setting the smoking port at the knife head position, the distance between the smoking port and the high-heat area of ​​cervical tissue can be shortened, and the channel has the blood-sucking function. The integrated setting will not have the risk of falling off. The main ideas are:

[0007] A suction LEEP knife comprises a knife head, a knife handle and a suction pump, wherein the knife head is provided with a first channel, and the knife handle is provided with a second channel. After the knife head and the knife handle are connected, the first channel and the second channel constitute a suction channel, and the suction pump is connected to the end of the knife handle. The first channel runs through the top of the knife head to set a suction port, and the suction pump draws air from the suction port through the suction channel; the first channel comprises a smoke channel, a cleaning channel and a confluence channel, the smoke channel is arranged in the middle position of the knife head, the cleaning channel is arranged at both ends of the knife head, the smoke and channel are connected to the confluence channel, and the confluence channel outputs the substance received by the smoke and channel to the second channel. Due to the high-temperature smoke generated by the electric cutting wire with high-frequency current cutting cervical tissue, according to the principle of thermal convection, the hot smoke will rise with the heated air and gather above the operation site. In this solution, the smoke channel is set in the middle of the knife head, which can better absorb the smoke gathered above the cervical tissue; since bleeding will occur when cutting cervical tissue, thereby contaminating the wound surface, and the inability to see the bleeding point will affect the doctor's accurate hemostasis, this solution sets a cleaning channel at both ends of the knife head, so that the blood flowing out of the bleeding point during cutting can be collected by the side of the knife head when it flows out along both sides of the wound surface. The cleaning channel is absorbed to keep the wound clean, which is convenient for doctors to find bleeding points on the clean wound and stop bleeding quickly. Therefore, the present invention provides a suction port on the blade head, which can not only shorten the distance between the suction port and the cutting position of the cervical tissue, but also respectively suck the smoke and blood through the reasonable distribution of the suction port on the blade head, thereby improving the suction effect. In addition, by respectively arranging the suction channels inside the blade head and the handle, when the blade head and the handle are spliced ​​and powered on, the suction channels formed inside the two are connected to the suction pump arranged outside the handle, and the suction channels will not be affected when the doctor holds and uses the blade.

[0008] Preferably, a diffusion mechanism is provided at the suction port of the smoke channel, and the diffusion mechanism includes a strip groove and a flow equalizer plate, the two ends of the strip groove extend to the two ends of the cutter head, a plurality of air holes are evenly distributed on the flow equalizer plate, and the flow equalizer plate is installed above the strip groove, and a flow air path is formed between the flow equalizer plate and the sink hole. A flow equalizer plate covered with air holes is provided above the sunken strip groove, so that the gap between the flow equalizer plate and the bottom surface of the strip groove forms a flow air path, and when the suction pump is working, the suction port connected to the smoke channel draws smoke to the outside, and because the sum of the air hole areas is smaller than the suction port area, the cooperation of the strip groove and the flow equalizer plate can diffuse and distribute the suction position on the basis of ensuring the pressure, so that there are more smoking positions when the cutter head is smoking, and the problem of forming an absorption dead angle when the smoke is distributed on the side of the smoke channel, resulting in the inability to fully absorb the smoke and affecting the operating field of the working position is avoided.

[0009] Preferably, an adsorption filter is provided in the smoke channel; and / or an adsorption filter is also provided at the suction port of the smoke channel, the adsorption filter is provided in the strip groove, and the adsorption filter is provided with a smoke hole connected to the smoke channel. The adsorption filter is provided in the smoke channel so that various harmful gases in the smoke generated during high-temperature cutting of the electric wire can be adsorbed by the adsorption filter, and placing the adsorption filter in the strip groove of the suction port can facilitate the replacement of the adsorption filter.

[0010] The second aspect of the present invention aims to solve the technical problem of insufficient blood cleaning during cutting. Furthermore, a side retaining ring is provided at the suction port of the cleaning channel, and the side retaining ring is a conical structure. The large-diameter end of the side retaining ring is connected to the suction port, and the outer wall of the side retaining ring is provided with a strip through hole. In this scheme, a side retaining ring is provided at the suction port of the cleaning channel. When absorbing blood, blood can be sucked in from the small-diameter port as well as from the strip-shaped holes in the side wall. The side wall is opened, so that the side retaining ring can perform blood suction in multiple directions when the blade is operated. If a large piece of residual tissue blocks the small-diameter port, blood can still be sucked in from the strip-shaped holes in the side wall, thereby avoiding the technical problem of the suction port of the cleaning channel being blocked by tissue.

[0011] Preferably, a drainage mechanism is arranged in the water absorption channel, and the water absorption channel includes a vertical inlet channel, a horizontal inlet channel and an arc-shaped confluence channel connected in sequence, the vertical inlet channel is arranged perpendicular to the upper end of the cutter head, and the drainage mechanism includes a spiral conveying shaft, the spiral conveying shaft is arranged in the vertical inlet channel, and the output port of the spiral conveying shaft is connected to the horizontal inlet channel; the drainage mechanism also includes a rotating wheel, the rotating wheel is arranged at the connecting position of the horizontal inlet channel and the arc-shaped confluence channel, and the arc-shaped confluence channel is connected to the confluence channel; the spiral conveying shaft and the rotating wheel are connected to the driving motor, and the rotating shaft of the rotating wheel is perpendicular to the surface of the cutter head. When the present solution is in use, after the blood enters the suction port, the blood is conveyed along the spiral blades of the spiral conveying shaft, so that under a certain adsorption force, the blood enters the cleaning channel and is conveyed along the spiral blades without backflow, thereby avoiding the problem of blood entering the vertical flow inlet channel and causing blood to flow back and re-contaminate the wound due to shaking; at the connection between the horizontal flow inlet channel and the arc-shaped confluence channel, a rotating wheel is provided with a rotating shaft perpendicular to the surface of the cutter head, so that the tangential force generated by the rotation of the rotating wheel can further provide assistance to the blood conveyed inside, so that it can be conveyed into the arc-shaped confluence channel.

[0012] In order to align the blade head and the handle to form a suction channel. Preferably, the blade head also includes a blade body, an electric cutting wire, an electrode sheet and a conductive rod. Mounting ports are set at both ends of the blade head. The electric cutting wire extends out of the middle of the blade head through the mounting ports to form a cutting ring. The two ends of the electric cutting wire are located inside the blade head to connect the electrode sheet. The conductive rod is installed at the center of the blade body to be electrically connected. The electric cutting wire is electrically connected to the conductive rod through the electrode sheet, and the conductive rod extends to the outside of the blade body; the blade handle is provided with a conductive slot for accommodating the conductive rod, the conductive slot cooperates with the conductive rod, and the bottom of the conductive slot is connected to a high-frequency current generator through a conductive wire. A plurality of control buttons are set on the outside of the blade handle, and the control buttons control the current and the driving components in the channel respectively. The second channel of the blade handle is distributed outside the conductive slot, and the second channel is not intercommunication with the conductive slot; a positioning component is provided between the conductive rod and the conductive slot. When the positioning component is in place, the first channel extending in the blade body is aligned with the second channel of the blade handle.

[0013] Preferably, the first channel includes two converging channels, the two converging channels are respectively used to connect the smoke channel and the cleaning channel, the two converging channels are respectively connected to two second channels opened in the tool handle, the two second channels are respectively connected to the vacuum pump and the liquid pump, the two converging channels are symmetrically arranged on one side close to the surface of the tool head, and the distance between the converging channels is smaller than the diameter of the electrode sheet.

[0014] Preferably, the cutter head is provided with a first joint for connecting with the handle, the first joint is provided at the end of the blade of the cutter head, a second joint is provided at the top of the handle, an external thread is provided on the outside of the first joint, an internal thread is provided on the inside of the second joint, the first joint and the second joint are threadedly connected, when the threads are in place, the confluent channel and the second channel are aligned, and a sealing ring for sealing is provided at the abutment position of the confluent channel and the second channel. This scheme adopts a threaded connection to detachably connect the cutter head and the handle, a first joint with an external thread is provided at the bottom of the blade of the cutter head, a second joint with an internal thread for connecting to the first joint is provided at the handle, and a raw tape is coated on the outside of the first joint to ensure the sealing performance at the thread between the two, and the confluent channel and the second channel can be abutted and aligned after the first joint and the second joint are in place.

[0015] The third aspect of the present invention aims to solve the technical problem that the eccentrically arranged seal will be interfered with by the rotation of the thread. Furthermore, a seal for positioning the sealing ring is also arranged between the confluent channel and the second channel, and the seal includes an annular groove for constraining the sealing ring and a clamping ring for squeezing the sealing ring, the annular groove is arranged at the outer edge of the confluent channel, and the clamping ring is arranged at the outer edge of the second channel; the second joint includes a guide and an annular slider that slides in the guide, and the inner wall of the annular slider is provided with an internal thread for mating with the first joint thread; a positioning retaining ring is arranged at the bottom of the annular slider, and when the first joint and the positioning retaining ring are in place, the confluent channel and the second channel are aligned. Since the size of the sealing ring arranged at the connection of the two channels is too small, it is necessary to position the sealing ring by setting an annular groove, and to set a clamping ring which is coaxial with the annular groove and can be snapped into the inside thereof. The clamping ring squeezes the sealing ring arranged in the annular groove, and the annular groove provides a clear installation position for the sealing ring. The displacement and torsional deformation of the sealing ring during operation can be effectively avoided through the geometric shape and depth design of the annular groove. In this scheme, the internal thread required to be opened in the tool handle is set on the inner wall of the annular slider, and the annular slider slides and cooperates along the inside of the guide member, so that when the annular slider is threadedly connected to the first joint, the annular slider can be adjusted to the upper end of the guide member, so that when the first joint is threadedly engaged, the annular groove and the conductive rod of the sealing member can maintain a distance from the clamping ring and the conductive groove of the second joint, which not only avoids the eccentrically arranged seal interfering with the rotation of the thread, but also avoids the conductive rod and the conductive groove of the positioning component interfering with the rotation of the thread.

[0016] Preferably, the guide member and the annular slider also include a connecting member, which is used to realize the positioning of the annular slider, and the connecting member includes a connecting part one and a connecting part two. The guide member is provided with a strip hole along the axial direction, the connecting part one is installed on the outside of the guide member, and the connecting part two is installed on the outer wall of the annular slider, and the connecting part two passes through the strip hole to be connected to the connecting part one of the guide member; a support baffle ring is arranged on the top of the guide member, and the support baffle ring and the annular slider are connected by a tension spring. This program By setting up a tension spring, when the annular slider is not positioned and connected with the guide member through the connecting member, the annular slider can automatically slide to the upper end of the second joint under the action of the restoring force of the tension spring, thereby simplifying the operation steps; in order to enable the annular slider to move along the lower end of the guide member, the seal and the conductive rod can be aligned and connected by plugging, and the position of the annular slider is fastened by the connecting member, so that the first joint threaded inside the annular slider is tightly connected to the tool handle.

[0017] By setting a suction port on the blade head, not only can the distance between the suction port and the cervical tissue cutting position be shortened, but also the smoke and blood can be sucked separately through the reasonable distribution of the suction port on the blade head, thereby improving the suction effect. The suction channel set inside is connected to the suction pump set outside the handle, and the suction channel will not be affected when the doctor holds and uses it. An adsorption filter is set on the smoke channel, and various harmful gases in the smoke generated during high-temperature cutting of the electric wire can be adsorbed by the adsorption filter to reduce human damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the cutter head of the present invention is shown in FIG. Figure 1 .

[0019] Figure 2 It is an enlarged view of the structure of the smoke channel of the present invention.

[0020] Figure 3 It is an enlarged view of the structure of the adsorption filter screen of the present invention.

[0021] Figure 4 The structure of the cutter head of the present invention is shown in FIG. Figure 2 .

[0022] Figure 5 This is an enlarged view of the structure of the cleaning channel of the present invention.

[0023] Figure 6 The structure state of the knife head and the knife handle of the present invention is matched Figure 1 .

[0024] Figure 7 The structure state of the knife head and the knife handle of the present invention is matched Figure 2 .

[0025] Figure 8It is a structural state diagram of the sealing member of the present invention.

[0026] The reference numerals include: 1, blade head; 11, blade body; 12, electric cutting wire; 13, electrode sheet; 14, conductive rod; 2, handle; 21, conductive groove; 22, positioning ring groove; 3, first channel; 31, smoke channel; 311, adsorption filter; 312, smoke hole; 32, cleaning channel; 321, vertical inlet channel; 322, horizontal inlet channel; 323, arc-shaped confluence channel; 33, confluence channel; 4, second channel; 5, diffusion mechanism ; 51. Strip groove; 52. Flow-uniforming plate; 53. Air hole; 54. Flow air path; 6. Side retaining ring; 61. Strip through hole; 7. Drainage mechanism; 71. Screw conveying shaft; 72. Rotating wheel; 8. First joint; 9. Second joint; 91. Guide member; 92. Annular slider; 93. Positioning retaining ring; 94. Tension spring; 95. Support retaining ring; 96. Connecting member; 97. Sealing member; 971. Annular groove; 972. Pressing ring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments clearer, 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 merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0028] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own profiles. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and have no order or importance.

[0029] Example 1

[0030] like Figure 1-Figure 8 As shown, a suction LEEP knife of the present embodiment includes a knife head 1, a knife handle 2 and a suction pump, wherein the knife head 1 is provided with a first channel 3, and the knife handle 2 is provided with a second channel 4. After the knife head 1 and the knife handle 2 are connected, the first channel 3 and the second channel 4 constitute a suction channel, and the suction pump is connected to the end of the knife handle 2. The first channel 3 runs through the top of the knife head 1 to set a suction port, and the suction pump draws air from the suction port through the suction channel; the first channel 3 includes a smoke channel 31, a cleaning channel 32 and a confluence channel 33, the smoke channel 31 is arranged in the middle position of the knife head 1, and the cleaning channel 32 is arranged at both ends of the knife head 1, the smoke and channel are connected to the confluence channel 33, and the confluence channel 33 outputs the substance received by the smoke and channel connection to the second channel 4.

[0031] Since the high-frequency current electric cutting wire 12 cuts the cervical tissue and generates high-temperature smoke, according to the principle of thermal convection, the hot smoke will rise with the heated air and gather above the operation site. In this solution, the smoke channel 31 is set in the middle position of the blade head 1, which can better absorb the smoke gathered above the cervical tissue.

[0032] Since the heat generated by the blade 1 during cutting can cause thermal damage to the surrounding normal tissues and cause bleeding, it is necessary to absorb the blood before finding the bleeding point on the wound surface to stop the bleeding. In this solution, cleaning channels 32 are set at both ends of the blade 1, so that when the blood flows out from the edge of the cut surface, it can be received by the cleaning channel 32 on the side of the blade 1, so that the wound surface remains clean.

[0033] In this embodiment, by providing a suction port on the blade head 1, not only can the distance between the suction port and the cervical tissue cutting position be shortened, but also smoke and blood can be sucked separately through the reasonable distribution of the suction port on the blade head 1, thereby improving the suction effect. In addition, by providing the suction channels inside the blade head 1 and the handle 2 respectively, when the blade head 1 and the handle 2 are spliced ​​and powered on, the suction channels formed inside the two are connected to the suction pump provided outside the handle 2 at the same time, and the suction channels will not be affected when the doctor holds and uses the blade.

[0034] Example 2

[0035] like Figure 2-Figure 3 As shown, the suction port of the smoke channel 31 of this embodiment is provided with a diffusion mechanism 5, and the diffusion mechanism 5 includes a strip groove 51 and a flow equalizer 52. The two ends of the strip groove 51 extend to the two ends of the cutter head 1, and a plurality of air holes 53 are evenly distributed on the flow equalizer 52. The flow equalizer 52 is installed above the strip groove 51, and a flow air path 54 is formed between the flow equalizer 52 and the countersunk hole.

[0036] like Figure 2 As shown, a flow equalizer plate 52 covered with air holes 53 is arranged above the sunken strip groove 51, so that the gap between the flow equalizer plate 52 and the bottom surface of the strip groove 51 constitutes a flow air path 54. When the suction pump is working, the suction port connected to the smoke channel 31 draws smoke to the outside. Since the sum of the areas of the air holes 53 is smaller than the area of ​​the suction port, the cooperation between the strip groove 51 and the flow equalizer plate 52 can diffuse the suction position on the basis of ensuring the pressure, so that there are more smoking positions when the cutter head 1 is smoking, avoiding the problem of forming an absorption dead angle when the smoke is distributed on the side of the smoke channel 31, resulting in the inability to fully absorb the smoke and affecting the operating field of the working position.

[0037] like Figure 3As shown, in this embodiment, an adsorption filter 311 is arranged in the smoke channel 31, and the adsorption filter 311 adopts a double activated carbon filter with a large surface area and strong adsorption force. In one embodiment, the adsorption filter 311 is arranged in a cylindrical shape, and the adsorption filter 311 is synchronously arranged according to the layout path of the smoke channel 31. The smoke inhaled in the smoke channel 31 is transported along the smoke channel 31 inside the cutter head 1 and synchronously contacts the adsorption filter 311 to achieve adsorption.

[0038] like Figure 3 As shown, in another embodiment, the suction port of the smoke channel 31 is provided with an adsorption filter 311, which is a rectangular frame structure with an opening, and the adsorption filter 311 is arranged in the strip groove 51. The flow plate 52 and the strip groove 51 of this embodiment are detachably connected. The opening of the adsorption filter 311 is toward the flow plate 52. When the smoke enters the diffusion mechanism 5 of the suction port, the smoke flows in the flow path 54 toward the smoke channel 31, and the smoke contacts the adsorption filter 311 arranged in the diffusion mechanism 5 at the same time, and the adsorption filter 311 can fully adsorb the harmful gas in the smoke; the adsorption filter 311 is provided with a smoke hole 312 connected to the smoke channel 31. In order to allow the smoke entering the middle part of the flow plate 52 to be absorbed, the smoke hole 312 is a cylindrical structure, and the cylindrical smoke hole 312 cooperates with the side wall of the inlet end of the smoke channel 31, so that the smoke entering through the flow plate 52 can be adsorbed in all directions. An adsorption filter 311 is arranged in the smoke channel 31 so that various harmful gases in the smoke generated during high-temperature cutting of the electric cutting wire 12 can be adsorbed by the adsorption filter 311. The flow equalizer 52 and the strip groove 51 are detachably connected. The adsorption filter 311 is placed in the strip groove 51 of the suction port, which can facilitate the replacement of the adsorption filter 311.

[0039] like Figure 4-Figure 5 As shown, the suction port of the cleaning channel 32 of this embodiment is provided with a side retaining ring 6, which is a conical platform structure, and the large-diameter end of the side retaining ring 6 is connected to the suction port, and the outer wall of the side retaining ring 6 is provided with a strip through hole 61. The side retaining ring 6 is provided at the suction port of the cleaning channel 32, and when blood is absorbed, blood can be sucked from the small-diameter port as well as from the strip through hole 61 of the side wall, and the side wall is opened, so that the side retaining ring 6 can perform blood suction in multiple directions when the cutter head 1 is operated, and if the small-diameter port is blocked by tissue and the air suction at the small-diameter end is affected, blood can still be sucked from the strip through hole 61 of the side wall, thereby avoiding the technical problem that the suction port of the cleaning channel 32 is blocked by tissue.

[0040] Example 3

[0041] like Figure 4-Figure 5As shown, on the basis of Example 1, a drainage mechanism 7 is arranged in the cleaning channel 32 of this embodiment, and the cleaning channel 32 includes a vertical inlet channel 321, a horizontal inlet channel 322 and an arc-shaped confluence channel 323 connected in sequence, and the vertical inlet channel 321 is perpendicularly arranged to the upper end of the cutter head 1, and the drainage mechanism 7 includes a spiral conveying shaft 71, and the spiral conveying shaft 71 is arranged in the vertical inlet channel 321, and the output port of the spiral conveying shaft 71 is connected to the horizontal inlet channel 322; the drainage mechanism 7 also includes a rotating wheel 72, and the rotating wheel 72 is arranged at the connecting position of the horizontal inlet channel 322 and the arc-shaped confluence channel 323, and the arc-shaped confluence channel 323 is connected to the confluence channel 33; the spiral conveying shaft 71 and the rotating wheel 72 are connected to the driving motor, and the rotating shaft of the rotating wheel 72 is perpendicular to the surface of the cutter head 1.

[0042] The vertical inlet channel 321 , the horizontal inlet channel 322 and the arc-shaped confluence channel 323 are arranged according to the outer contour of the cutter head 1 .

[0043] When the present embodiment is in use, after the blood enters the suction port, the blood is conveyed along the spiral blades of the spiral conveying shaft 71, so that under a certain adsorption force, the blood enters the cleaning channel 32 and is conveyed along the spiral blades without backflow, thereby avoiding the problem of blood backflow and re-contamination of the wound due to shaking when the blood enters the vertical flow inlet channel 321; at the connection between the horizontal flow inlet channel 322 and the arc-shaped confluence channel 323, a rotating wheel 72 whose rotating shaft is perpendicular to the surface of the cutter head 1 is provided, so that the tangential force generated by the rotation of the rotating wheel 72 can further provide assistance to the blood conveyed inside, so that it is conveyed into the arc-shaped confluence channel 323.

[0044] The rotating wheel 72 includes a rotating shaft and a blade group evenly distributed along the outer wall of the rotating shaft. In order to improve the power delivery performance in the channel, the blade group is arranged along the axial direction of the rotating shaft. A flow rate sensor is set at the end of the first channel 3. The flow rate sensor measures the blood flow rate in the suction channel. The speed of the driving motor driving the spiral delivery shaft 71 and the rotating wheel 72 can be adjusted by the controller.

[0045] Example 4

[0046] like Figure 1-Figure 8As shown, in order to align the blade head 1 and the handle 2 to form a smoking channel, the blade head 1 described in this embodiment also includes a blade body 11, an electric cutting wire 12, an electrode sheet 13 and a conductive rod 14. Mounting ports are set at both ends of the blade head 1. The electric cutting wire 12 extends out of the middle of the blade head 1 through the mounting ports to form a cutting ring. The two ends of the electric cutting wire 12 are located inside the blade head 1 and connected to the electrode sheet 13. The conductive rod 14 is installed at the center of the blade body 11 for electrical connection. The electric cutting wire 12 is electrically connected to the conductive rod 14 through the electrode sheet 13, and the conductive rod 14 extends to the outside of the blade body 11; the handle 2 A conductive slot 21 is provided to accommodate a conductive rod 14, the conductive slot 21 cooperates with the conductive rod 14, and the bottom of the conductive slot 21 is connected to a high-frequency current generator through a conductive wire. A plurality of control buttons are provided on the outside of the handle 2, and the control buttons respectively control the current and the driving components in the channel. The second channel 4 of the handle 2 is distributed on the outside of the conductive slot 21, and the second channel 4 and the conductive slot 21 are not interconnected. A positioning component is provided between the conductive rod 14 and the conductive slot 21, and when the positioning component is in place, the first channel 3 extending in the blade 11 is aligned with the second channel 4 of the handle 2.

[0047] The knife handle 2 is connected to the high-frequency electrosurgical unit generator through a connecting wire. The high-frequency electrosurgical unit generator provides a 3.8MHz high-frequency current, which is transmitted to the LEEP knife through the connecting wire to generate high temperature to achieve cutting and coagulation. The connecting wire is connected to the middle position of the bottom of the knife handle 2. The two second channels 4 distributed on both sides of the knife handle 2 are connected to the suction pump through a hose at their ends. When the doctor holds the knife handle 2 during surgery, it will not come into contact with the hose connected to the suction pump, causing the suction hose to fall off. In addition, the switch used to control the current generated by the high-frequency electrosurgical unit generator can also be set as a foot switch. The doctor controls the output of the current through the foot switch, which is convenient for flexible adjustment of the operation mode during surgery.

[0048] The outer part of the knife head 1 is covered with an insulating layer to prevent the current from spreading to normal tissues; the knife handle 2 is made of insulating material to ensure the safety of the doctor's operation. The bottom of the conductive groove 21 inside the knife handle 2 is provided with a ring-shaped or sheet-shaped metal conductive sheet. When the conductive rod 14 is inserted into the knife handle 2, its end is in direct contact with the metal conductive sheet. The metal conductive sheet is connected to an external high-frequency power supply through a wire. The current is conducted to the conductive rod 14 through the metal conductive sheet in the conductive groove 21, and finally acts on the electric cutting wire 12 of the knife head 1.

[0049] The conductive rod 14 is wrapped with an insulating layer, and the conductive material is exposed only in a specific area in contact with the metal conductive sheet, so as to ensure directional transmission of current and avoid leakage.

[0050] The first channel 3 of this embodiment includes two converging channels 33, and the two converging channels 33 are respectively used to connect the smoke channel 31 and the cleaning channel 32. The two converging channels 33 are respectively connected to two second channels 4 opened in the handle 2, and the two second channels 4 are respectively connected to the vacuum pump and the liquid pump. The two converging channels 33 are symmetrically arranged on one side close to the surface of the cutter head 1, and the distance between the converging channels 33 is smaller than the diameter of the electrode sheet 13.

[0051] In this embodiment, the positions of the converging channels 33 distributed along the axial direction and the positions where the two ends of the electric cutting wire 12 are connected to the electrode sheet 13 are staggered. In this embodiment, the distribution of the electric cutting wire 12 in the cutter head 1 is staggered with the first channel 3. The electric cutting wire 12 in this embodiment includes a cutting ring and a conductive connecting wire. The cutting ring is the part extending outside the cutter head 1, and the conductive connecting wire is the part connected to the electrode sheet 13 inside the cutter head 1. The distribution of the conductive connecting wire avoids the internal first channel 3.

[0052] The positioning assembly provided between the conductive rod 14 and the conductive slot 21 is used as a reference for aligning the first channel 3 and the second channel 4. The positioning assembly of this embodiment adopts a straight-line structure, and a straight-line convex strip can be symmetrically provided along the axis of the outer side of the conductive rod 14, and a straight-line groove can be symmetrically provided along the axis of the inner wall of the conductive slot 21. When aligning and inserting, the alignment progress can be ensured, and in order to improve the accuracy, the positioning assembly can also adopt convex strips and grooves of various shapes.

[0053] Example 5

[0054] like Figure 6-Figure 8 As shown, the cutter head 1 of this embodiment is provided with a first joint 8 for connecting to the cutter handle 2, the first joint 8 is provided at the end of the blade body 11 of the cutter head 1, the second joint 9 is provided at the top of the cutter handle 2, the outside of the first joint 8 is provided with an external thread, the inside of the second joint 9 is provided with an internal thread, the first joint 8 and the second joint 9 are threadedly connected, when the threads are in place, the converging channel 33 and the second channel 4 are aligned, and a sealing ring for sealing is provided at the abutment position of the converging channel 33 and the second channel 4.

[0055] In this embodiment, the cutter head 1 and the handle 2 are detachably connected by a threaded connection. A first joint 8 with an external thread is provided at the bottom of the blade body 11 of the cutter head 1, and a second joint 9 is provided at the handle 2 and has an internal thread for connecting to the first joint 8. In order to ensure the sealing performance at the threaded part, a raw tape is wrapped on the outside of the first joint 8. After the first joint 8 and the second joint 9 are in place, the converging channel 33 and the second channel 4 can be abutted and aligned.

[0056] This embodiment provides an external thread on the outside of the first joint 8 at the end of the blade body 11, which does not change the basic appearance of the blade body. When the common blade handle 2 in the prior art is used for docking, it can be smoothly inserted and powered on, making the blade head 1 of this embodiment universal.

[0057] In this embodiment, a seal 97 for positioning the sealing ring is also provided between the confluent channel 33 and the second channel 4. The seal 97 includes an annular groove 971 for constraining the sealing ring and a pressing ring 972 for squeezing the sealing ring. The annular groove 971 is provided at the outer edge of the confluent channel 33, and the pressing ring 972 is provided at the outer edge of the second channel 4. Since the size of the sealing ring provided at the connection between the two channels is too small, it is necessary to position and place the sealing ring by providing an annular groove 971, and to provide a pressing ring 972 that is coaxial with the annular groove 971 and can be snapped into the inside thereof. The pressing ring 972 squeezes the sealing ring provided in the annular groove 971. The annular groove 971 provides a clear installation position for the sealing ring. The geometric shape and depth design of the annular groove 971 can effectively limit the displacement of the sealing ring during operation and reduce the risk of deformation and displacement caused by pressure.

[0058] Example 6

[0059] like Figure 6-Figure 8 As shown, the second joint 9 of this embodiment includes a guide member 91 and an annular slider 92 slidably matched in the guide member 91, and the inner wall of the annular slider 92 is provided with an internal thread for threadedly matching with the first joint 8;

[0060] A positioning retaining ring 93 is provided at the bottom of the annular slider 92. When the first joint 8 is in place with the positioning retaining ring 93, the converging channel 33 and the second channel 4 are aligned.

[0061] A support ring 95 is provided on the top of the guide member 91, and the support ring 95 and the annular slider 92 are connected by a tension spring 94;

[0062] The guide member 91 and the annular slider 92 further include a connecting member 96, which is used to realize the positioning of the annular slider 92. The connecting member 96 includes a connecting portion 1 and a connecting portion 2. The guide member 91 is provided with a strip hole along the axial direction. The connecting portion 1 is installed outside the guide member 91, and the connecting portion 2 is installed on the outer wall of the annular slider 92. The connecting portion 2 passes through the strip hole to connect with the connecting portion 1 of the guide member 91. The position of the connecting member 96 is set so that the connecting member 96 used for fastening and positioning will not directly act on the cutter head 1.

[0063] In this embodiment, the internal thread required to be opened in the knife handle 2 is set on the inner wall of the annular slider 92, and the annular slider 92 slides and cooperates along the inside of the guide member 91, so that when the annular slider 92 is threadedly connected with the first joint 8, it can be adjusted to the upper end of the guide member 91, so that when the first joint 8 is threadedly engaged, the annular groove 971 of the seal 97 and the conductive rod 14 can maintain a distance from the clamping ring 972 and the conductive groove 21 of the second joint 9, which not only avoids the eccentrically arranged seal 97 from interfering with the rotation of the thread, but also avoids the conductive rod 14 and the conductive groove 21 of the positioning assembly from interfering with the rotation of the thread.

[0064] By setting up the tension spring 94, when the annular slider 92 is not positioned and connected with the guide member 91 through the connecting member 96, the annular slider 92 can automatically slide to the upper end of the second joint 9 under the action of the restoring force of the tension spring 94, thereby simplifying the operation steps; in order to enable the annular slider 92 to move along the lower end of the guide member 91, the sealing member 97 and the conductive rod 14 can be aligned and connected by plugging, and the position of the annular slider 92 is fastened by the connecting member 96, so that the first joint 8 threaded inside the annular slider 92 is tightly connected to the tool handle 2.

[0065] After the threads are matched, the eccentrically arranged confluence channel 33 and the second channel 4 need to be aligned. However, there will be processing errors in the positioning of the external threads of the first joint 8. This error can be adjusted by the annular slider 92. In one embodiment, the outer wall of the annular slider 92 is provided with a circumferential groove along the circumference. The second connecting portion of the connecting member 96 is connected to the annular slider 92 through an adjustment ring. The adjustment ring is embedded in the circumferential groove. The thickness between the inner wall and the outer wall of the adjusting ring is lower than the depth of the circumferential groove, so that the setting of the adjustment ring will not affect the sliding of the annular slider 92 in the guide member 91. The outer wall of the adjustment ring is provided with a second connecting member. Due to the constraint of the second connecting member passing through the strip hole provided along the axial direction of the guide member 91, the adjustment ring equipped with the second positioning member is subject to rotation constraint. The annular slider 92 can be rotated under the constraint of the adjustment ring, and the first joint 8 installed inside the annular slider 92 is rotated and adjusted until the confluence channel 33 and the second channel 4 are abutted and aligned.

[0066] Furthermore, in order to prevent the rotation of the annular slider 92 from being interfered with by the tension spring 94, the tension spring of this embodiment is connected to the bottom of the tension spring through a thrust ball bearing, so that when the annular slider 92 rotates axially, the tension spring 94 connected to its top will not be affected.

[0067] like Figure 6-Figure 7As shown, the annular slider 92 of this embodiment slides downward along the guide member 91 so that the confluent channel 33 and the second channel 4 are connected to each other. At this time, a clamping ring 972 is inserted into the annular groove 971 of the seal 97. After the connecting member 96 fastens the annular slider 92 and the guide member 91, since the groove sealing structure adopted by the seal 97 is eccentrically arranged relative to the cutter head 1 and the shank 2, after the annular groove 971 and the clamping ring 972 are matched, a local high-pressure contact area is generated in the threaded matching of the shank 2 and the cutter head 1 through a geometrically asymmetric design, and friction force is used to form a self-locking, so as to prevent the cutter head 1 from rotating under vibration or force, thereby avoiding leakage caused by failure of the threaded connection.

[0068] In order to make the end faces connecting the handle 2 and the cutter head 1 better fit together, the handle 2 of this embodiment is provided with a positioning ring groove 22 for accommodating the positioning retaining ring 93, and a sealing ring is provided on the side of the positioning ring groove 22 opposite to the positioning retaining ring 93. When the positioning retaining ring 93 and the positioning ring groove 22 are abutted and matched, under the force applied after the connecting piece 96 is tightened, the sealing rings provided on both end faces of the positioning retaining ring 93 and the positioning ring groove 22 are squeezed, which can further improve the sealing performance between the blade 11 and the handle 2.

[0069] 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. A suction LEEP knife, characterized in that: The invention comprises a cutter head (1), a cutter handle (2) and a suction pump, wherein the cutter head (1) is provided with a first channel (3), and the cutter handle (2) is provided with a second channel (4); after the cutter head (1) and the cutter handle (2) are connected, the first channel (3) and the second channel (4) form a suction channel; the suction pump is connected to the end of the cutter handle (2); the first channel (3) passes through the top of the cutter head (1) and a suction port is provided; the suction pump extracts air from the suction port through the suction channel; the first channel (3) comprises a smoke channel (31), a cleaning channel (32) and a confluence channel (33); the smoke channel (31) is provided in the middle of the cutter head (1), the cleaning channel (32) is provided at both ends of the cutter head (1), the confluence channel (33) connects the smoke channel (31) and the cleaning channel (32), and the confluence channel (33) outputs substances received by the smoke channel (31) and the cleaning channel (32) to the second channel (4).

2. A suction LEEP knife according to claim 1, characterized in that: A diffusion mechanism (5) is provided at the suction port of the smoke channel (31), the diffusion mechanism (5) comprising a strip groove (51) and a flow equalizer plate (52), the two ends of the strip groove (51) extending towards the two ends of the cutter head (1), a plurality of air holes (53) are evenly distributed on the flow equalizer plate (52), the flow equalizer plate (52) is installed above the strip groove (51), and a flow air path (54) is formed between the flow equalizer plate (52) and the countersunk hole.

3. A suction LEEP knife according to claim 2, characterized in that: An adsorption filter (311) is arranged in the smoke channel (31); and / or an adsorption filter (311) is also arranged at the suction port of the smoke channel (31), the adsorption filter (311) is arranged in the strip groove (51), and the adsorption filter (311) is provided with a smoke hole (312) connected to the smoke channel (31).

4. The suction LEEP knife according to claim 1, characterized in that: The suction port of the cleaning channel (32) is provided with a side retaining ring (6), the side retaining ring (6) being a conical platform structure, the large-diameter end of the side retaining ring (6) being connected to the suction port, and the outer wall of the side retaining ring (6) being provided with a strip-shaped through hole (61).

5. The suction LEEP knife according to claim 1, characterized in that: A drainage mechanism (7) is arranged in the cleaning channel (32), the cleaning channel (32) comprising a vertical inlet channel (321), a horizontal inlet channel (322) and an arc-shaped converging channel (323) connected in sequence, the vertical inlet channel (321) being arranged perpendicular to the upper end of the cutter head (1), the drainage mechanism (7) comprising a screw conveying shaft (71), the screw conveying shaft (71) being arranged in the vertical inlet channel (321), the output port of the screw conveying shaft (71) being connected to the horizontal inlet channel (322); the drainage mechanism (7) further comprising a rotating wheel (72), the rotating wheel (72) being arranged at a connection position between the horizontal inlet channel (322) and the arc-shaped converging channel (323), the arc-shaped converging channel (323) being connected to the converging channel (33); the screw conveying shaft (71) and the rotating wheel (72) are connected to a driving motor, the rotating shaft of the rotating wheel (72) being perpendicular to the surface of the cutter head (1).

6. The suction LEEP knife according to claim 1, characterized in that: The first channel (3) comprises two converging channels (33), the two converging channels (33) being used to connect the smoke channel (31) and the cleaning channel (32) respectively, the two converging channels (33) being respectively connected to two second channels (4) provided in the tool handle (2), the two second channels (4) being respectively connected to a vacuum pump and a liquid pump, the two converging channels (33) being symmetrically arranged on one side close to the surface of the tool head (1), and the distance between the converging channels (33) being less than the diameter of the electrode sheet (13).

7. The suction LEEP knife according to claim 1, characterized in that: The blade head (1) further comprises a blade body (11), an electric cutting wire (12), an electrode sheet (13) and a conductive rod (14); mounting openings are arranged at both ends of the blade head (1); the electric cutting wire (12) extends through the mounting openings to the middle of the blade head (1) to form a cutting ring; both ends of the electric cutting wire (12) are located inside the blade head (1) to connect to the electrode sheet (13); a conductive rod (14) is installed at the center of the blade body (11) to be electrically connected; the electric cutting wire (12) is electrically connected to the conductive rod (14) via the electrode sheet (13); and the conductive rod (14) extends to the outside of the blade body (11); and the blade handle (2) is provided with a portion for accommodating the conductive rod (14). A conductive slot (21) is provided, the conductive slot (21) cooperates with the conductive rod (14), the bottom of the conductive slot (21) is connected to a high-frequency current generator via a conductive wire, a plurality of control buttons are arranged outside the knife handle (2), the control buttons respectively control the current and the driving components in the channel, the second channel (4) of the knife handle (2) is distributed outside the conductive slot (21), and the second channel (4) and the conductive slot (21) are not intercommunication; a positioning component is provided between the conductive rod (14) and the conductive slot (21), and when the positioning component is in place, the first channel (3) extending in the blade (11) is aligned with the second channel (4) of the knife handle (2).

8. The suction LEEP knife according to claim 7, characterized in that: The cutter head (1) is provided with a first joint (8) for connecting to the cutter handle (2); the first joint (8) is provided at the end of a blade body (11) of the cutter head (1); a second joint (9) is provided at the top of the cutter handle (2); an external thread is provided on the outside of the first joint (8); an internal thread is provided on the inside of the second joint (9); the first joint (8) and the second joint (9) are threadedly connected; when the threads are in place, the converging channel (33) and the second channel (4) are aligned.

9. The suction LEEP knife according to claim 8, characterized in that: A sealing member (97) for positioning the sealing ring is also provided between the converging channel (33) and the second channel (4), the sealing member (97) comprising an annular groove (971) for constraining the sealing ring and a pressing ring (972) for pressing the sealing ring, the annular groove (971) being provided at the outer edge of the converging channel (33), and the pressing ring (972) being provided at the outer edge of the second channel (4); The second joint (9) comprises a guide member (91) and an annular slider (92) slidably engaged in the guide member (91), and an inner wall of the annular slider (92) is provided with an internal thread for threadably engaging with the first joint (8); A positioning retaining ring (93) is provided at the bottom of the annular sliding block (92); when the first joint (8) and the positioning retaining ring (93) are in place, the converging channel (33) and the second channel (4) are aligned.

10. The suction LEEP knife according to claim 9, characterized in that: The guide member (91) and the annular slider (92) further include a connecting member (96), the connecting member (96) being used to realize the positioning of the annular slider (92), the connecting member (96) including a connecting portion 1 and a connecting portion 2, the guide member (91) being provided with a strip hole along the axial direction, the connecting portion 1 being mounted on the outside of the guide member (91), the connecting portion 2 being mounted on the outer wall of the annular slider (92), the connecting portion 2 passing through the strip hole to be connected to the connecting portion 1 of the guide member (91); A support retaining ring (95) is provided on the top of the guide member (91), and the support retaining ring (95) and the annular sliding block (92) are connected via a tension spring (94).

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