Plasma operation electrode and operation equipment

Abstract

According to the plasma operation electrode and the operation equipment, in the using process, electrolyte sequentially passes through a liquid supply channel and a liquid outlet and then flows out to an affected part so that the electrolyte can be electrolyzed into plasma. Moreover, the curvature radius of the second arc-shaped section of the electrode tube is larger than that of the first arc-shaped section of the suction tube, so that the liquid supply channel extends in the direction far away from the electrode tube at the first arc-shaped section, and the liquid supply channel extends in the direction far away from the suction tube at the second arc-shaped section; the liquid storage space between the first arc-shaped section and the second arc-shaped section is enlarged, so that the hydraulic pressure of the electrolyte in the liquid storage space is reduced, the pressure intensity of the electrolyte flowing out of the liquid storage space through the liquid outlet is reduced, and the problem of jet-shaped flowing out is avoided; it is guaranteed that the electrolyte can well flow down to the position of the tool bit and the head of the tool bit, plasma can be generated easily, soft tissue can be cooled easily in the operation process, the operation efficiency cannot be affected, and thermal damage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a plasma surgical electrode and surgical equipment. Background Art

[0002] A plasma surgical electrode is a medical surgical device that ablates tissue by generating plasma through electrolysis of an electrolyte. It primarily consists of a blade, conductive wire, infusion tube, suction tube, and handle. During surgery, the plasma electrode injects electrolyte into the affected area. A voltage is applied between the blade's working and return electrodes to generate plasma. This covalent bond between the plasma and cellular molecules allows for the cutting, ablation, and hemostasis of soft tissue in the affected area.

[0003] During use, traditional plasma surgical electrodes have difficulty reaching the blade tip. Large injection volumes can even cause the electrolyte to spray out and completely fail to reach the tip. This hinders plasma generation and cools soft tissue during surgery, compromising surgical efficiency and causing thermal damage. This is unfriendly to both surgeons and patients, and unintended thermal damage can even affect postoperative recovery. Furthermore, the conductive wire, injection tube, and suction tube can rotate relative to the handle or become detached, compromising surgical safety. Summary of the Invention

[0004] Based on this, it is necessary to provide a plasma surgical electrode and surgical equipment to address the technical issues that are not conducive to surgical safety.

[0005] The technical solution is as follows:

[0006] On the one hand, a plasma surgical electrode is provided, comprising a conductive wire, an injection tube, a suction tube, and a handle, wherein the conductive wire, the injection tube, and the suction tube are connected to the rear end of the handle, and the electrode further comprises:

[0007] A suction tube, the suction tube being provided with a suction channel extending in the axial direction and communicating with the suction tube, the front end of the suction tube having a first arc-shaped section;

[0008] an electrode tube, the electrode tube being sleeved on a portion of the outer circumference of the suction tube, the inner sidewall of the electrode tube being spaced apart from the outer sidewall of the suction tube to form a liquid supply channel communicating with the injection tube, the electrode tube having a second arc segment corresponding to the first arc segment, the curvature radius of the second arc segment being greater than the curvature radius of the first arc segment, and the second arc segment being provided with a liquid outlet for communicating with the outside world and the liquid supply channel;

[0009] Wherein, the suction tube and the electrode tube are both connected to the front end of the handle, and the electrode tube is electrically connected to the conductive wire to form one of the working electrode and the loop electrode;

[0010] In addition, the handle has an installation cavity extending axially and open at both ends, and the inner wall of the installation cavity is provided with at least one of a first positioning portion, a second positioning portion and a third positioning portion, wherein the first positioning portion is used to position and cooperate with the conductive wire, the second positioning portion is used to position and cooperate with the suction tube, and the third positioning portion is used to position and cooperate with the injection tube.

[0011] The technical solution is further described below:

[0012] In one embodiment, the plasma surgical electrode also includes an insulating head and an electrode member. The insulating head is partially inserted into the front end of the electrode tube. The insulating head is provided with a suction through-hole and a first mounting through-hole. The suction through-hole is used to connect the outside world with the suction channel. The first mounting through-hole is used to connect the outside world with the liquid supply channel. The electrode member is passed through the liquid supply channel and the first mounting through-hole and is at least partially located on the front end surface of the insulating head. The electrode member is electrically connected to the conductive wire to form the other pole between the working pole and the loop pole.

[0013] In one embodiment, the electrode member has a third arc segment arranged corresponding to the first arc segment, and the curvature radius of the third arc segment matches the curvature radius of the first arc segment.

[0014] In one embodiment, the plasma surgical electrode further includes a first insulating sleeve, which is disposed on the outer peripheral side of the electrode component, and the first insulating sleeve extends from the access end of the electrode component to a preset length portion into the first mounting through hole.

[0015] In one embodiment, the first insulating sleeve has a fourth arc segment arranged corresponding to the first arc segment, and the curvature radius of the fourth arc segment matches the curvature radius of the first arc segment.

[0016] In one embodiment, the plasma surgical electrode further includes a fuse protection component, which is connected in series with the working electrode or the loop electrode, and is configured to fuse when the current exceeds a preset current value.

[0017] In one embodiment, the fuse protection component is disposed in the installation cavity and is located between the conductive wire and the electrode tube.

[0018] In one embodiment, the first positioning portion includes two first positioning plates that are arranged radially opposite to each other and spaced apart from each other along the mounting cavity, and the two first positioning plates cooperate to form a first positioning groove for clamping the conductive wire.

[0019] In one embodiment, the second positioning portion includes two second positioning plates arranged at relative intervals along the radial direction of the installation cavity, and the two second positioning plates cooperate to form a second positioning groove for clamping the suction tube, and the second positioning groove is arranged corresponding to the electrode rod along the axial direction of the installation cavity; and / or, the third positioning portion includes two third positioning plates arranged at relative intervals along the radial direction of the installation cavity, and the two third positioning plates at least partially overlap along the radial direction of the installation cavity to form a third positioning groove for clamping the injection tube.

[0020] In one embodiment, the handle includes an outer shell and an inner shell, the outer shell is provided with the mounting cavity, the inner shell is at least partially located in the mounting cavity, and the inner shell is provided with at least one of the first positioning portion, the second positioning portion and the third positioning portion, the inner shell is also provided with injection holes and plug-in holes arranged at intervals, the injection holes and the plug-in holes are both connected to the mounting cavity, the plug-in holes are plugged into the suction tube and the electrode tube, one end of the injection hole is connected to the liquid supply channel, and the other end of the injection hole is connected to the injection tube, and the inner side wall of the plug-in hole is provided with at least one positioning protrusion that is positioned and matched with the electrode tube.

[0021] On the other hand, a surgical device is provided, comprising a radio frequency host and the plasma surgical electrode, wherein the radio frequency host is electrically connected to at least the conductive wire.

[0022] During use, the plasma surgical electrode and surgical device of the above-described embodiment sequentially flows through the injection tube, the liquid supply channel, and the liquid outlet to the affected area. Furthermore, because the radius of curvature of the second arc segment of the electrode tube is greater than the radius of curvature of the first arc segment of the suction tube, the liquid supply channel extends away from the electrode tube at the first arc segment, and the liquid supply channel extends away from the suction tube at the second arc segment. This increases the liquid storage space between the first and second arc segments, thereby reducing the hydraulic pressure of the electrolyte within the liquid storage space. This in turn reduces the pressure of the electrolyte as it flows out of the liquid storage space through the liquid outlet, preventing the problem of jet-like outflow. This ensures that the electrolyte can flow smoothly to the blade tip and the head of the blade, facilitating plasma generation and cooling of soft tissue during surgery. This does not affect surgical efficiency, avoids thermal damage, and ensures surgical safety. Furthermore, the electrolyzed electrolyte and ionized tissue can be drawn out through the suction channel of the suction tube and into the suction tube. At the same time, by arranging at least one of the first positioning portion, the second positioning portion and the third positioning portion on the inner wall of the installation cavity, the first positioning portion is used to position and cooperate with the conductive wire to realize the installation and fixation of the conductive wire relative to the handle, the second positioning portion is used to position and cooperate with the suction tube to realize the installation and fixation of the suction tube relative to the handle, and the third positioning portion is used to position and cooperate with the injection tube to realize the installation and fixation of the injection tube relative to the handle, thereby avoiding the risk of the conductive wire, the injection tube and the suction tube rotating or falling off relative to the handle, and ensuring the safe and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 Schematic diagram of the structure of a plasma surgical electrode according to one embodiment;

[0026] Figure 2 for Figure 1 Axial cross-sectional view of the plasma surgical electrode;

[0027] Figure 3 for Figure 2 A cross-sectional view of the plasma surgical electrode AA;

[0028] Figure 4 for Figure 2 A partial cross-sectional view of the insulating head portion of the plasma surgical electrode;

[0029] Figure 5 for Figure 1 An axial cross-sectional view of a handle of a plasma surgical electrode;

[0030] Figure 6 for Figure 1 Schematic diagram of the structure of the inner shell of the plasma surgical electrode;

[0031] Figure 7 for Figure 6 Cross-sectional view of the inner shell BB.

[0032] Description of reference numerals:

[0033] 10. Plasma surgical electrode; 100. Suction tube; 110. Suction channel; 120. First arc segment; 200. Electrode tube; 210. Second arc segment; 220. Liquid outlet; 300. Liquid supply channel; 400. Liquid storage space; 500. Insulation head; 510. Suction through hole; 520. First mounting through hole; 530. Second mounting through hole; 540. Positioning portion; 600. Electrode member; 610. Main body section; 620. Electrode section; 630. Bending section; 700. First insulating sleeve; 800. Second insulating sleeve; 900. Handle; 901. Housing; 9 02. Inner shell; 9021. Liquid injection through hole; 9022. Plug-in through hole; 9023. Positioning protrusion; 9024. Glue sol groove; 9025. Glue injection groove; 903. Tail; 910. Mounting cavity; 920. First positioning part; 921. First positioning plate; 922. First positioning groove; 930. Second positioning part; 931. Second positioning plate; 932. Second positioning groove; 940. Third positioning part; 941. Third positioning plate; 942. Third positioning groove; 1000. Conductive wire; 2000. Suction tube; 3000. Liquid injection tube; 4000. Fuse protection component. DETAILED DESCRIPTION

[0034] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] During surgery, traditional plasma surgical electrodes have difficulty reaching the blade tip. Large amounts of electrolyte can even spray out in a jet-like pattern, completely failing to reach the tip. This hinders both plasma generation and cooling of soft tissue during surgery, compromising surgical efficiency and causing thermal damage. This is unfriendly to both doctors and patients, with unexpected thermal damage even impacting postoperative recovery. Furthermore, the conductive wires, injection tubes, and suction tubes of traditional plasma surgical electrodes are glued to the handle. During clinical use, these wires, injection tubes, and suction tubes may rotate relative to the handle or become detached, compromising surgical safety.

[0036] like Figure 1 As shown, in one embodiment, a surgical device is provided, including a radio frequency host (not shown) and a plasma surgical electrode 10. The radio frequency host is electrically connected to at least a conductive wire 1000 to provide a high-frequency current to at least the plasma surgical electrode 10.

[0037] Of course, in other embodiments, the RF host may also provide at least one of the following functions for the plasma surgical electrode 10 : high-frequency current, vacuum suction, etc.

[0038] The radio frequency host may be an existing device that can provide at least one of the functions of high-frequency current, suction force, etc.

[0039] Optionally, the RF host can be electrically connected to the electrode tube 200 via the conductive wire 1000 to provide high-frequency current to the electrode tube 200 .

[0040] Optionally, the RF host can be vacuum-connected to the suction tube 100 to provide vacuum suction for aspirating the electrolyte and electrolytic tissue.

[0041] Optionally, the RF host can be connected to the injection tube 3000 to pump ionized fluid for ionization ablation.

[0042] During actual use, the RF host can be connected to at least one of the conductive wire 1000, the suction tube 2000 and the injection tube 3000 to provide corresponding functions.

[0043] like Figures 1 to 7 As shown, in one embodiment, a plasma surgical electrode 10 is provided, including a conductive wire 1000 , an injection tube 3000 , a suction tube 2000 , a handle 900 , a suction tube 100 and an electrode tube 200 .

[0044] It should be noted that the conductive wire 1000 , the injection tube 3000 and the suction tube 2000 can all adopt existing structures or components, which will not be described in detail here.

[0045] The conductive wire 1000 , the liquid injection tube 3000 , and the suction tube 2000 are connected to the rear end of the handle 900 by plugging or the like.

[0046] It should be noted that the front end of the embodiment of the present application refers to the end facing the electrode blade head, and the rear end refers to the end away from the electrode blade head, that is, the two ends along the axial direction in the text.

[0047] like Figure 2 As shown, the suction tube 100 is provided with a suction channel 110 extending in the axial direction and communicating with the suction tube 2000. In addition, the front end of the suction tube 100 has a first arc segment 120.

[0048] like Figures 2 to 4 As shown, the electrode tube 200 is sleeved over a portion of the outer circumference of the suction tube 100. The inner wall of the electrode tube 200 is spaced apart from the outer wall of the suction tube 100 to form a liquid supply channel 300 that communicates with the liquid injection tube 3000. Electrolyte can enter the liquid supply channel 300 through the liquid injection tube 3000 and then be transported axially along the electrode tube 200. The electrode tube 200 has a second arcuate segment 210 corresponding to the first arcuate segment 120. The radius of curvature of the second arcuate segment 210 is greater than that of the first arcuate segment 120. Furthermore, the second arcuate segment 210 is provided with a liquid outlet 220 for connecting the outside world with the liquid supply channel 300.

[0049] The suction tube 100 and the electrode tube 200 are both connected to the front end of the handle 900 by plugging. In addition, the electrode tube 200 is electrically connected to the conductive wire 1000 to form one of the working electrode and the return electrode.

[0050] like Figure 5 As shown, the handle 900 has an axially extending mounting cavity 910 with openings at both ends. Furthermore, the inner wall of the mounting cavity 910 is provided with at least one of a first positioning portion 920, a second positioning portion 930, and a third positioning portion 940. The first positioning portion 920 is used to position and mate with the conductive wire 1000, the second positioning portion 930 is used to position and mate with the suction tube 2000, and the third positioning portion 940 is used to position and mate with the injection tube 3000.

[0051] During use of the plasma surgical electrode 10 of the above embodiment, the electrolyte flows out to the affected area through the liquid injection tube 3000, the liquid supply channel 300 and the liquid outlet 220 in sequence. Moreover, since the radius of curvature of the second arc segment 210 of the electrode tube 200 is greater than the radius of curvature of the first arc segment 120 of the suction tube 100, the liquid supply channel 300 extends in the direction away from the electrode tube 200 at the first arc segment 120, and the liquid supply channel 300 extends in the direction away from the suction tube 100 at the second arc segment 210, thereby increasing the liquid storage space 400 between the first arc segment 120 and the second arc segment 210, so that the hydraulic pressure of the electrolyte in the liquid storage space 400 is reduced, and then the pressure of the electrolyte when flowing out from the liquid storage space 400 through the liquid outlet 220 is reduced, and the problem of jet-like outflow will not occur, ensuring that the electrolyte can flow well to the position of the blade and the head of the blade, which is conducive to the generation of plasma and is also conducive to cooling the soft tissue during the operation, will not affect the efficiency of the operation, avoid thermal damage, and ensure the safety of the operation. Furthermore, the electrolyzed electrolyte and ionized tissue can be drawn out through the suction channel 110 of the suction tube 100 and into the suction tube 2000. Furthermore, at least one of a first positioning portion 920, a second positioning portion 930, and a third positioning portion 940 is provided on the inner wall of the mounting cavity 910. The first positioning portion 920 is used to position and cooperate with the conductive wire 1000 to secure it to the handle 900, the second positioning portion 930 is used to position and cooperate with the suction tube 2000 to secure it to the handle 900, and the third positioning portion 940 is used to position and cooperate with the injection tube 3000 to secure it to the handle 900. This prevents the conductive wire 1000, the injection tube 3000, and the suction tube 2000 from rotating or falling out relative to the handle 900, thereby ensuring a safe and reliable surgical procedure.

[0052] like Figure 2 and Figure 4As shown, in one embodiment, the plasma surgical electrode 10 further includes an insulating head 500 and an electrode member 600. The insulating head 500 is partially inserted into the front end of the electrode tube 200. Optionally, the rear end of the insulating head 500 is inserted into the electrode tube 200. The insulating head 500 is provided with a suction through-hole 510 and a first mounting through-hole 520. The suction through-hole 510 is used to connect the outside world with the suction channel 110. Thus, liquid and cut tissue can be drawn into and out of the suction tube 2000 through the suction through-hole 510 and the suction channel 110. The first mounting through-hole 520 is used to connect the outside world with the liquid supply channel 300. The electrode member 600 is provided through the liquid supply channel 300 and the first mounting through-hole 520 and is at least partially located on the front end surface of the insulating head 500. At the same time, the electrode member 600 is electrically connected to the conductive wire 1000 to form a working electrode and the other electrode of the loop electrode. In this way, after the conductive wire 1000 energizes the electrode tube 200 and the electrode member 600, the electrode member 600 can form one of the working electrode and the loop electrode, and the electrode tube 200 can form the other electrode of the working electrode and the loop electrode. Plasma can be generated under the conduction of the electrolyte, and the covalent bond between the plasma and the cell molecules is utilized to achieve cutting, ablation and hemostasis of the soft tissue in the lesion area.

[0053] Optionally, the insulating head 500 may adopt an insulating structure such as a ceramic head.

[0054] Optionally, the electrode member 600 may be various types of cutting heads such as an electrode sheet, an electrode wire, an electrode head, an electrode blade, and an electrode hook.

[0055] In one embodiment, the electrode member 600 has a third arc segment arranged corresponding to the first arc segment 120, and the curvature radius of the third arc segment matches the curvature radius of the first arc segment 120, so that the electrode member 600 extends in the direction away from the electrode tube 200 at the third arc segment, so that the liquid storage space 400 is large enough to effectively reduce the hydraulic pressure of the electrolyte in the liquid storage space 400.

[0056] like Figure 3 and Figure 4 As shown, in one embodiment, the plasma surgical electrode 10 further includes a first insulating sleeve 700. The first insulating sleeve 700 is sleeved on the outer peripheral side of the electrode member 600 to prevent the electrode member 600 from short-circuiting with the electrolyte in the liquid supply channel 300. Figure 4 As shown, the first insulating sleeve 700 extends from the access end of the electrode member 600 to a predetermined length (such as Figure 4 The portion (shown as L2) extends into the first mounting through hole 520. In this way, a predetermined electrical distance is formed between the electrode member 600 and the electrode tube 200, thereby enhancing the insulation strength and reducing undesirable phenomena such as sparking or short circuiting.

[0057] The access end of the electrode component 600 refers to the end where the electrode component 600 is connected to the conductive wire 1000 .

[0058] The first insulating sleeve 700 may be made of insulating materials such as rubber.

[0059] It should be noted that the actual value of the preset length can be flexibly adjusted or designed according to actual needs or electrical requirements, as long as it does not cause undesirable phenomena such as sparking or short circuit.

[0060] like Figure 4 As shown, optionally, the electrode member 600 is configured as an electrode wire, and the electrode member 600 includes a main body section 610, an electrode section 620 and a bending section 630 connected in sequence. Among them, the main body section 610 shown is arranged in the liquid supply channel 300 and the mounting through hole. The electrode section 620 is arranged at an angle relative to the main body section 610 and is located at the front end face of the insulating head 500. Optionally, the electrode section 620 is arranged perpendicular to the main body section 610. The bending section 630 is arranged at an angle relative to the electrode section 620 and is arranged at a relative interval with the main body section 610. Optionally, the electrode section 620 is arranged perpendicular to the bending section 630. The insulating head 500 is provided with a second mounting through hole 530, and the bending section 630 is arranged in the second mounting through hole 530 and is at a preset distance from the rear end face of the insulating head 500 (such as Figure 4 Thus, a preset electrical distance is formed between the bent section 630 and the electrode tube 200, thereby enhancing the insulation strength and reducing adverse phenomena such as sparking or short circuit.

[0061] It should be noted that the actual value of the preset spacing can be flexibly adjusted or designed according to actual needs or electrical requirements, as long as it does not cause undesirable phenomena such as sparking or short circuit.

[0062] The setting of the preset length and the preset spacing effectively enhances the insulation strength between the electrode tube 200 and the electrode member 600 , thereby reducing undesirable phenomena such as sparking or short circuit.

[0063] like Figure 4 As shown, in one embodiment, the outer wall of the insulating head 500 is provided with a limiting portion 540. The limiting portion 540 and the rear end surface of the insulating head 500 are spaced apart by a preset interval (eg Figure 4(as shown in L3 of FIG. ). Furthermore, the stopper 540 engages with the front end surface of the electrode tube 200. Thus, when the insulating head 500 is inserted into the electrode tube 200, the stopper 540 engages with the front end surface of the electrode tube 200, indicating that it is properly inserted. This positions the insulating head 500 for assembly with the electrode tube 200. Furthermore, the preset spacing between the stopper 540 and the rear end surface of the insulating head 500 effectively ensures the accuracy of the preset length and spacing, effectively enhancing the insulation strength between the electrode tube 200 and the electrode member 600 and reducing undesirable phenomena such as sparking or short circuiting.

[0064] The limiting portion 540 may be in the form of a limiting protrusion or a limiting flange.

[0065] It should be noted that the actual value of the preset interval can be flexibly adjusted or designed according to actual needs or electrical requirements, as long as it does not cause undesirable phenomena such as sparking or short circuit.

[0066] In one embodiment, the first insulating sleeve 700 has a fourth arc segment corresponding to the first arc segment 120, and the curvature radius of the fourth arc segment matches the curvature radius of the first arc segment 120. This allows the liquid storage space 400 to be sufficiently large, effectively reducing the hydraulic pressure of the electrolyte in the liquid storage space 400.

[0067] Optionally, there are at least two liquid outlets 220, and two adjacent liquid outlets 220 are spaced apart from each other. In this way, sufficient liquid output can be guaranteed, so that enough electrolyte can reach the position of the cutter head and the head of the cutter head.

[0068] As shown in Figure 1 Figure 4 As shown, the plasma surgical electrode 10 optionally further includes a second insulating sleeve 800, which is disposed around the outer periphery of the electrode tube 200 and connects the liquid outlet 220 to the outside world. This prevents the electrode tube 200 from short-circuiting with the outside world and causing electric shock, and also prevents the electrolyte from flowing out of the affected area.

[0069] The second insulating sleeve 800 may be made of insulating materials such as rubber.

[0070] like Figure 5 As shown, in one embodiment, the plasma surgical electrode 10 further includes a fuse protector 4000, which is connected in series with the working electrode or the return electrode. The fuse protector 4000 is configured to fuse when the current exceeds a preset current value. Thus, if the plasma surgical electrode 10 comes into contact with metal or an adverse event such as sparking or short circuiting occurs during surgery, causing the current to exceed the preset current value, the fuse protector 4000 will automatically fuse and disconnect the circuit, protecting the patient and the equipment.

[0071] The fuse protection component 4000 may be an electronic fuse protector or other device.

[0072] In one embodiment, the fuse protector 4000 is installed in the mounting cavity 910 of the handle 900 by plugging, snapping, or gluing, specifically between the conductive wire 1000 and the electrode tube 200. Thus, encapsulating the fuse protector 4000 within the handle 900 protects it from external interference or influence, and also facilitates series connection of the fuse protector 4000 with the working electrode or the return electrode.

[0073] like Figure 5 As shown, in one embodiment, a handle 900 includes an outer shell 901 and an inner shell 902. The outer shell 901 defines a mounting cavity 910, and the inner shell 902 can be inserted so as to be at least partially positioned within the mounting cavity 910. Furthermore, the inner shell 902 defines at least one of a first positioning portion 920, a second positioning portion 930, and a third positioning portion 940. Thus, after the first positioning portion 920, the second positioning portion 930, and the third positioning portion 940 are machined on the inner shell 902, the inner shell 902 is then inserted into the mounting cavity 910, thereby positioning the first positioning portion 920, the second positioning portion 930, and the third positioning portion 940 within the mounting cavity 910, thereby reducing the difficulty of machining.

[0074] like Figure 7 As shown, the inner shell 902 is further provided with spaced-apart injection holes 9021 and plugging holes 9022. Both the injection holes 9021 and the plugging holes 9022 communicate with the mounting cavity 910. The plugging holes 9022 engage with the suction tube 100 and the electrode tube 200, allowing both to be partially positioned within the mounting cavity 910 and securely connected to the handle 900. This allows the electrode tube 200 to be electrically connected to the conductive wire 1000, energizing the suction tube 100 and connecting to the injection tube 3000. One end of the injection hole 9021 communicates with the liquid supply channel 300, while the other end communicates with the injection tube 3000. This allows the injection tube 3000 to inject ionized liquid into the liquid supply channel 300 through the injection hole 9021 for ionized cutting or hemostasis.

[0075] like Figure 7 As shown, further, the inner side wall of the insertion through hole 9022 is provided with at least one positioning protrusion 9023 that cooperates with the electrode tube 200. Thus, through the interference of the positioning protrusion 9023 with the electrode tube 200, the assembly of the electrode tube 200 and the handle 900 is made more stable, avoiding the risk of the electrode tube 200 rotating relative to the handle 900 or falling off, ensuring a safe and reliable operation.

[0076] The specific number of the positioning protrusions 9023 can be flexibly adjusted or designed according to actual use requirements or processing conditions, for example, it can be one, two, three or more.

[0077] like Figure 6 As shown, in one embodiment, the inner shell 902 is further provided with a glue tank 9024 corresponding to and connected to the insertion through hole 9022, and a glue injection tank 9025 located beside the glue tank 9024 and connected to the glue tank 9024. Thus, after the electrode tube 200 and the suction tube 100 are inserted into the installation cavity 910 through the insertion through hole 9022, the electrode tube 200 and the suction tube 100 are partially located in the glue tank 9024. After glue is injected into the glue tank 9024 through the glue injection tank 9025, the electrode tube 200 and the suction tube 100 can be further stably and reliably bonded and fixed to the inner shell 902.

[0078] like Figure 5 As shown, in one embodiment, the handle 900 further includes a tail portion 903. The tail portion 903 is connected to the inner housing 902 by means of a snap-fit ​​or plug-in connection. The tail portion 903 is located at the rear end of the outer housing 901, sealing the rear end of the mounting cavity 910. The tail portion 903 is provided with a first through-hole for the conductive wire 1000, a second through-hole for the injection tube 3000, and a third through-hole for the suction tube 2000. Furthermore, the first, second, and third through-holes are all in communication with the mounting cavity 910. In this way, after the conductive wire 1000 passes through the first penetration hole, it is positioned and matched with the first positioning part 920 and electrically connected to the electrode rod. After the injection tube 3000 passes through the second penetration hole, it is positioned and matched with the second positioning part 930 and connected to the gap between the outer blade tube and the inner blade tube of the electrode rod. After the suction tube 2000 passes through the third penetration hole, it is positioned and matched with the third positioning part 940 and connected to the inner blade tube of the electrode rod, ensuring the stability of the assembly of the conductive wire 1000, the injection tube 3000 and the suction tube 2000 with the handle 900, avoiding the risk of the conductive wire 1000, the injection tube 3000 and the suction tube 2000 rotating relative to the handle 900 or falling off, and ensuring the safe and reliable operation.

[0079] The positioning and cooperation between the conductive wire 1000 and the first positioning portion 920 can be achieved by means of snap connection or plug connection.

[0080] like Figure 6As shown, in one embodiment, the first positioning portion 920 includes two first positioning plates 921 spaced apart from each other along the radial direction of the mounting cavity 910. The two first positioning plates 921 cooperate to form a first positioning slot 922 for engaging the conductive wire 1000. Thus, after the conductive wire 1000 is inserted into the mounting cavity 910, it engages with the first positioning slot 922, securing the guide wire relative to the handle 900 and preventing the conductive wire 1000 from rotating relative to the handle 900 or becoming dislodged.

[0081] The positioning and cooperation between the suction tube 2000 and the second positioning portion 930 can be achieved by means of snap connection or plug connection.

[0082] like Figure 6 As shown, in one embodiment, the second positioning portion 930 includes two second positioning plates 931 spaced apart from each other along the radial direction of the mounting cavity 910. The two second positioning plates 931 cooperate to form a second positioning groove 932 for engaging the suction tube 2000. Thus, after the suction tube 2000 is inserted into the mounting cavity 910, it engages with the second positioning groove 932, thereby securing the suction tube 2000 relative to the handle 900 and preventing the suction tube 2000 from rotating relative to the handle 900 or falling off. Furthermore, the second positioning groove 932 is disposed axially with the electrode rod along the mounting cavity 910. Thus, after the suction tube 2000 engages with the second positioning groove 932, corresponding communication between the suction tube 2000 and the inner conduit of the electrode rod can be achieved.

[0083] The positioning and cooperation between the liquid injection tube 3000 and the third positioning portion 940 can be achieved by means of snap connection or plug connection.

[0084] like Figure 6 As shown, in one embodiment, the third positioning portion 940 includes two third positioning plates 941 spaced apart along the radial direction of the mounting cavity 910. The two third positioning plates 941 at least partially overlap along the radial direction of the mounting cavity 910 to form a third positioning groove 942 for engaging the injection tube 3000. Thus, after the injection tube 3000 is inserted into the mounting cavity 910, it engages with the third positioning groove 942, securing the injection tube 3000 relative to the handle 900 and preventing the injection tube 3000 from rotating or falling out of the handle 900. Furthermore, the injection tube 3000 can communicate with the gap between the outer and inner blade tubes of the electrode rod through the injection through-hole 9021. Furthermore, when the two third positioning plates 941 partially overlap along the radial direction of the mounting cavity 910, the contact length with the injection tube 3000 can be extended, preventing the injection tube 3000 from becoming loose relative to the handle 900.

[0085] It should be noted that "a certain body" or "a certain part" can be a part of the corresponding "component", that is, the "a certain body" or "a certain part" can be integrally formed with the "other parts of the component"; or it can be an independent component that is separable from the "other parts of the component", that is, the "a certain body" or "a certain part" can be manufactured independently and then combined with the "other parts of the component" into a whole. The expression of the above-mentioned "a certain body" or "a certain part" in this application is only one embodiment, for the convenience of reading, and not to limit the scope of protection of this application. As long as it contains the above-mentioned features and has the same function, it should be understood as an equivalent technical solution of this application.

[0086] It should be noted that the components included in the "units," "assemblies," "mechanisms," and "devices" of this application can also be flexibly combined, that is, modularized production can be carried out according to actual needs to facilitate modular assembly. The division of the above components in this application is only one embodiment, for the convenience of reading, and does not limit the scope of protection of this application. As long as the above components are included and have the same functions, it should be understood that they are equivalent technical solutions of this application.

[0087] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. The term "and / or" used in the present invention includes any and all combinations of one or more of the relevant listed items.

[0088] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0089] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0090] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0091] It should be noted that when an element is referred to as being "fixed on", "set on", "fixed on" or "installed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element at the same time. Furthermore, when an element is considered to be "fixed transmission connected" to another element, the two can be fixed in a detachable connection manner or in a non-detachable connection manner, as long as power transmission can be achieved, such as socketing, snap-fitting, integral molding fixation, welding, etc., which can be achieved in the prior art and will not be repeated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0092] It should also be understood that when explaining the connection relationship or positional relationship of elements, even if not explicitly described, the connection relationship and positional relationship should be interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately," "approximately," or "substantially" can mean within one or more standard deviations, which is not limited here.

[0093] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A plasma surgical electrode, comprising a conductive wire, an injection tube, a suction tube, and a handle, wherein the conductive wire, the injection tube, and the suction tube are connected to the rear end of the handle, characterized in that: Also includes: A suction tube, the suction tube being provided with a suction channel extending in the axial direction and communicating with the suction tube, the front end of the suction tube having a first arc-shaped section; an electrode tube, the electrode tube being sleeved on a portion of the outer circumference of the suction tube, the inner sidewall of the electrode tube being spaced apart from the outer sidewall of the suction tube to form a liquid supply channel communicating with the injection tube, the electrode tube having a second arc segment corresponding to the first arc segment, the curvature radius of the second arc segment being greater than the curvature radius of the first arc segment, and the second arc segment being provided with a liquid outlet for communicating with the outside world and the liquid supply channel; Wherein, the suction tube and the electrode tube are both connected to the front end of the handle, and the electrode tube is electrically connected to the conductive wire to form one of the working electrode and the loop electrode; In addition, the handle has an installation cavity extending axially and open at both ends, and the inner wall of the installation cavity is provided with at least one of a first positioning portion, a second positioning portion and a third positioning portion, wherein the first positioning portion is used to position and cooperate with the conductive wire, the second positioning portion is used to position and cooperate with the suction tube, and the third positioning portion is used to position and cooperate with the injection tube.

2. The plasma surgical electrode according to claim 1, characterized in that: The plasma surgical electrode also includes an insulating head and an electrode component. The insulating head is partially inserted into the front end of the electrode tube. The insulating head is provided with a suction through-hole and a first mounting through-hole. The suction through-hole is used to connect the outside world with the suction channel. The first mounting through-hole is used to connect the outside world with the liquid supply channel. The electrode component is passed through the liquid supply channel and the first mounting through-hole and is at least partially located on the front end surface of the insulating head. The electrode component is electrically connected to the conductive wire to form the other pole between the working pole and the loop pole.

3. The plasma surgical electrode according to claim 2, characterized in that: The electrode member has a third arc segment arranged corresponding to the first arc segment, and the curvature radius of the third arc segment matches the curvature radius of the first arc segment.

4. The plasma surgical electrode according to claim 2, characterized in that: The plasma surgical electrode further includes a first insulating sleeve, which is disposed on the outer peripheral side of the electrode component and extends from the access end of the electrode component to a preset length portion into the first mounting through hole.

5. The plasma surgical electrode according to claim 4, characterized in that: The first insulating sleeve has a fourth arc segment arranged corresponding to the first arc segment, and the curvature radius of the fourth arc segment matches the curvature radius of the first arc segment.

6. The plasma surgical electrode according to claim 2, characterized in that: The plasma surgical electrode further includes a fuse protection component, which is connected in series with the working electrode or the loop electrode. The fuse protection component is configured to fuse when the current exceeds a preset current value.

7. The plasma surgical electrode according to claim 6, characterized in that: The fuse protection component is arranged in the installation cavity and is located between the conductive wire and the electrode tube.

8. The plasma surgical electrode according to any one of claims 1 to 7, characterized in that: The first positioning portion includes two first positioning plates that are arranged at intervals along the radial direction of the installation cavity. The two first positioning plates cooperate to form a first positioning groove for clamping the conductive wire.

9. The plasma surgical electrode according to claim 8, characterized in that: The second positioning portion includes two second positioning plates arranged radially opposite to each other and spaced apart from each other along the mounting cavity, the two second positioning plates cooperate to form a second positioning groove for clamping the suction tube, and the second positioning groove is arranged corresponding to the electrode rod along the axial direction of the mounting cavity; and / or, The third positioning portion includes two third positioning plates spaced apart along the radial direction of the installation cavity. The two third positioning plates at least partially overlap along the radial direction of the installation cavity to form a third positioning groove for clamping the injection tube.

10. The plasma surgical electrode according to any one of claims 1 to 7, characterized in that: The handle includes an outer shell and an inner shell, the outer shell is provided with the mounting cavity, the inner shell is at least partially located in the mounting cavity, and the inner shell is provided with at least one of the first positioning portion, the second positioning portion and the third positioning portion, the inner shell is also provided with injection holes and plug-in holes arranged at intervals, the injection holes and the plug-in holes are both connected to the mounting cavity, the plug-in holes are plugged into the suction tube and the electrode tube, one end of the injection hole is connected to the liquid supply channel, and the other end of the injection hole is connected to the injection tube, and the inner side wall of the plug-in hole is provided with at least one positioning protrusion that is positioned and matched with the electrode tube.

11. A surgical device, characterized in that: It comprises a radio frequency host and the plasma surgical electrode according to any one of claims 1 to 10, wherein the radio frequency host is electrically connected to at least the conductive wire.

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