Electrosurgical pencil, electrosurgical system

Abstract

The application relates to an electrosurgical pencil and an electrosurgical system. The electrosurgical pencil comprises a housing, a blade rod installed inside the housing, the blade rod comprising opposite distal and proximal ends, the distal end being used for installing an electrode assembly, the blade rod further comprising a blade rod cavity communicated between the distal and proximal ends, a pipe assembly selectively communicated with the blade rod cavity, comprising a first pipe and a second pipe, and a switching valve arranged between the pipe assembly and the proximal end of the blade rod, used for communicating one of the first pipe and the second pipe with the blade rod cavity. By arranging the switching valve, the first pipe and the second pipe are selectively communicated with or not communicated with the blade rod cavity, the functions corresponding to different pipes are switched by the switching valve, the switching is realized by a single action of a single component, the switching is convenient and fast, different functions share the blade rod cavity in the blade rod, and the structure of the pencil is simplified.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to electrosurgical scalpels and electrosurgical systems. Background Technology

[0002] Electrosurgical units (ESUs) have become indispensable equipment in operating rooms. In a narrow sense, an ESU refers to a high-frequency electrosurgical unit that directly utilizes the thermal effect caused by high-frequency, high-voltage current passing through tissue for cutting and hemostasis. In a broader sense, an ESU refers to any device that uses high-frequency electrical energy to achieve surgical purposes such as cutting, separating, and hemostasis of tissue, including high-frequency electrosurgical units, argon plasma coagulators, radiofrequency ablation devices, and iontophoresis devices. A high-frequency electrosurgical unit is an electrosurgical instrument that heats tissue through contact with the body using a high-frequency, high-voltage current generated at the effective electrode tip, achieving tissue separation and coagulation, thereby achieving cutting and hemostasis. In monopolar mode, the current forms a complete circuit through the electrode, patient plate, and connecting wires for cutting and coagulating tissue. Bipolar electrocoagulation, on the other hand, provides high-frequency electrical energy to the tissue through the two tips of bipolar forceps, causing the blood vessels between the two ends of the forceps to dehydrate and coagulate, achieving hemostasis. However, during the use of high-frequency electrosurgical units, the treated living tissue undergoes dehydration and carbonization at high temperatures, easily generating smoke / dust, which poses a threat to the doctor's health. Therefore, it is usually used in conjunction with a smoking device. For plasma scalpels, a thin, high-temperature jet is directed at the tissue surface, enabling simultaneous cutting and ablation of tissue, and in some cases, sealing blood vessels up to 3 mm in diameter. During the use of plasma electrosurgical units, a continuous supply of sodium chloride solution is needed to the electrode tip to form and maintain a low-temperature plasma. Under a stable low-frequency electric field of 100 kHz, exciting one molecule of NaCl generates 8 electron volts of kinetic energy, while breaking a peptide bond requires 4 electron volts. This causes the target tissue cells to disintegrate at the molecular level, and proteins and other tissues to break down and vaporize into low-molecular-weight gases such as hydrogen, oxygen, carbon dioxide, nitrogen, and methane, achieving a cutting and ablation effect at low temperatures.

[0003] In related technologies, high-frequency electrosurgical scalpels cannot provide deionized water and therefore cannot be used as plasma scalpels; plasma scalpels are not equipped with fumigation devices, while when used as high-frequency electrosurgical scalpels, additional fumigation devices are required. Therefore, traditional electrosurgical scalpels have a single power supply, which cannot meet the needs of electrosurgical instruments used in complex surgical procedures. Summary of the Invention

[0004] Therefore, it is necessary to provide an electrosurgical scalpel pen and electrosurgical system that are widely applicable, have diverse functions, and are easy to operate, in order to address the above-mentioned technical problems.

[0005] An electrosurgical pen, the electrosurgical pen comprising:

[0006] case;

[0007] A tool holder is installed inside the housing. The tool holder includes a distal end and a proximal end opposite to each other. The distal end is used to install an electrode assembly. The tool holder also includes a tool holder cavity communicating between the distal end and the proximal end.

[0008] A conduit assembly, selectively connected to the tool holder cavity, includes a first conduit and a second conduit; and

[0009] A switching valve is located between the pipe assembly and the proximal end of the cutter bar, for communicating one of the first pipe and the second pipe with the cutter bar cavity.

[0010] In one embodiment, the switching valve includes:

[0011] The valve body is connected between the pipe assembly and the proximal end of the knife bar; and

[0012] A switching element is movably disposed on the valve body, and the switching element has a switching channel that connects to the outside through the valve body;

[0013] When the switching element is in the first position, the switching channel connects the first pipe and the tool holder cavity; when the switching element is in the second position, the switching channel connects the second pipe and the tool holder cavity; when the switching element is in the third position, the switching element closes the tool holder cavity at its proximal end.

[0014] In one embodiment, the cutter bar, the first pipe, and the second pipe are connected to the valve body at intervals, and the switching channel forms at least a first port and a second port at intervals on the surface of the switching element, the interval between the first port and the second port being equal to the interval between the cutter bar and the first pipe, and the interval between the first port and the second port being equal to the interval between the cutter bar and the second pipe.

[0015] In one embodiment, at least a portion of the switching element is cylindrical or spherical, and the switching element is rotatable relative to the valve body to switch between the first position, the second position, and the third position.

[0016] In one embodiment, the switching element is provided with an indicator for indicating at least one of the first position, the second position, and the third position.

[0017] In one embodiment, the valve body is provided with a first interface tube, a second interface tube, and a third interface tube extending radially. The first interface tube is used to cooperate with the knife rod cavity, the second interface tube is used to be detachably connected to the first pipe, and the third interface tube is used to be detachably connected to the second pipe.

[0018] In one embodiment, the electrosurgical pen further includes an electrode assembly comprising an electrode head and an electrode base, the electrode head being mounted on the electrode base and the electrode base being detachably connected to the distal end.

[0019] In one embodiment, the tool holder includes:

[0020] Inner tube, forming the tool holder cavity; and

[0021] An outer tube is provided to cover the inner tube, and the outer tube is made of an insulating material.

[0022] In one embodiment, the first conduit is used to connect to a liquid supply pump, and the second conduit is used to connect to a smoke pump.

[0023] An electrosurgical system, comprising:

[0024] Power supply equipment, including one of a high-frequency power supply and a plasma source; and

[0025] As described above, the electrosurgical pen has a wiring section for connecting to the power supply device.

[0026] When the power supply device is the plasma source, the switching valve is used to connect the first pipe to the tool holder cavity; when the power supply device is the high-frequency power supply, the switching valve is used to connect the second pipe to the tool holder cavity.

[0027] The aforementioned electrosurgical scalpel, by incorporating a switching valve, allows for selective connection or disconnection of the first and second conduits with the scalpel cavity. The first and second conduits connect to different devices to achieve different functions. The switching valve allows for switching between the functions corresponding to different conduits, achieved through a single action of a single component, making switching convenient and quick. Switching between conduits with different functions is suitable for electrosurgical scalpels based on different principles; that is, this scalpel structure is applicable to both high-frequency electrosurgical scalpels and plasma scalpels. By merging the first and second conduits within the scalpel cavity and incorporating the switching valve, different functions can share the same scalpel cavity, simplifying the scalpel structure. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the exploded structure of an electrosurgical scalpel pen according to one embodiment of this application.

[0029] Figure 2 This is a partial structural schematic diagram of the electrosurgical scalpel pen in one embodiment of this application.

[0030] Figure 3 This is a schematic cross-sectional view of an electrosurgical scalpel pen according to one embodiment of this application.

[0031] Figure 4 This is a schematic diagram showing the connection of the liquid supply channel of a three-port switching valve in one embodiment of this application.

[0032] Figure 5 This is a schematic diagram of the smoke exhaust channel connection of a three-port switching valve in one embodiment of this application.

[0033] Figure 6 This is a schematic diagram of the smoke exhaust channel connection of a two-port switching valve in one embodiment of this application, wherein the left figure is a schematic diagram of the smoke exhaust channel connection and the right figure is a schematic diagram of the liquid supply channel connection.

[0034] Figure 7 This is a schematic diagram of the switching valve in one embodiment of this application.

[0035] Explanation of icon numbers:

[0036] 1. Electrosurgical scalpel pen; 11. Distal end; 12. Proximal end; 100. Housing; 110. Button; 120. Wiring part; 130. Control component; 140. Reducing sleeve; 200. Scalpel handle; 201. Scalpel handle cavity; 210. Outer tube; 220. Inner tube; 300. Pipe assembly; 310. First pipe; 320. Second pipe; 400. Switching valve; 401. Switching channel; 402. First port; 403. Second port; 410. Valve body; 411. First interface tube; 412. Second interface tube; 413. Third interface tube; 420. Switching element; 421. Rotating part; 422. Operating part; 423. Indicating part; 500. Electrode assembly; 510. Electrode head; 520. Electrode base. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0043] See Figure 1-7 , Figure 1-7 The diagram shows a schematic of the structure of an electrosurgical pen 1 according to an embodiment of the present application. The electrosurgical pen 1 provided in an embodiment of the present application includes a housing 100, a scalpel 200, a conduit assembly 300, and a switching valve 400.

[0044] A tool holder 200 is mounted inside the housing 100. The tool holder 200 includes a distal end 11 and a proximal end 12, the distal end 11 for mounting an electrode assembly 500. The tool holder 200 also includes a tool holder cavity 201 communicating between the distal end 11 and the proximal end 12. A conduit assembly 300, optionally communicating with the tool holder cavity 201, includes a first conduit 310 and a second conduit 320. A switching valve 400 is disposed between the conduit assembly 300 and the proximal end 12 of the tool holder 200, for communicating one of the first conduit 310 and the second conduit 320 with the tool holder cavity 201.

[0045] The aforementioned electrosurgical scalpel 1, by setting a switching valve 400, allows the first pipe 310 and the second pipe 320 to be selectively connected to or disconnected from the scalpel cavity 201. The first pipe 310 and the second pipe 320 are respectively connected to different devices to achieve different functions. The function corresponding to different pipes is switched by the switching valve 400, and the switching is achieved by a single action of a single component, which is convenient and quick. Switching between pipes with different functions is suitable for electrosurgical scalpels 1 based on different principles. That is, the scalpel structure is suitable for both high-frequency electrosurgical scalpels and plasma scalpels. By setting the switching valve 400, the first pipe 310 and the second pipe 320 are joined in the scalpel cavity 201, so that different functions can share the scalpel cavity 201 within the scalpel 200, thus simplifying the scalpel structure.

[0046] The housing 100 forms a cavity that accommodates at least the tool holder 200. The tool holder 200 may also pass through the housing 100, and the end of the housing 100 may be used to fix the tool holder 200. The switching valve 400 may be connected to the portion of the tool holder 200 located inside the housing 100 or to the portion located outside the housing 100. When the switching valve 400 is connected to the portion of the tool holder 200 located inside the housing 100, the housing 100 has a space to accommodate the switching valve 400 and / or a through-hole through which the switching valve 400 and the pipe assembly 300 pass.

[0047] The housing 100 is provided with a button 110, which is used to control the start and stop of the electrosurgical pen 1, and / or to control the switching function of the electrosurgical pen 1 switching valve 400, that is, to control the electric switching valve 400 to enable one of the first pipe 310 and the second pipe 320 to communicate with the scalpel cavity 201.

[0048] In one embodiment, the first conduit 310 is used to connect to a liquid supply pump, and the second conduit 320 is used to connect to a smoke pump.

[0049] like Figure 1-3 As shown, one end of the first pipe 310 is connected to a switching valve 400, and the other end is connected to an external fluid supply pump, which supplies a preset liquid substance to the electrosurgical scalpel pen 1. Additionally, a container for storing the preset liquid substance, such as saline solution, may be included, and the container is connected between the fluid supply pump and the first pipe 310. When the switching valve 400 connects the scalpel chamber 201 to the first pipe 310, the scalpel chamber 201 and the first pipe 310 constitute a fluid supply channel.

[0050] One end of the second pipe 320 is connected to the switching valve 400, and the other end is connected to an external fumigation pump. The fumigation pump draws gaseous substances from inside the electrosurgical scalpel pen 1 to the outside. The gaseous substances are a mixture of gases, including but not limited to hydrogen, oxygen, carbon dioxide, nitrogen, and methane. Additionally, a container for storing the gaseous substances may be included, connected between the fumigation pump and the first pipe 310. When the switching valve 400 connects the scalpel chamber 201 to the second pipe 320, the scalpel chamber 201 and the second pipe 320 constitute a smoke exhaust channel. The scalpel chamber 201 achieves dual-channel reuse—a liquid supply channel and a smoke exhaust channel—through the switching valve 400.

[0051] like Figure 4-7As shown, the switching valve 400 can be a mechanical switching structure or an electromagnetic switching structure. In one embodiment, the switching valve 400 includes: a valve body 410 connected between the pipe assembly 300 and the proximal end 12 of the knife bar 200; and a switching element 420 movably disposed in the valve body 410, wherein the switching element 420 has a switching channel 401 communicating with the outside through the valve body 410; wherein, when the switching element 420 is in the first position, such as Figure 4 or Figure 6 As shown on the right, the switching channel 401 connects the first pipe 310 and the tool holder cavity 201; when the switching element 420 is in the second position, as... Figure 5 or Figure 6 As shown on the left, the switching channel 401 connects the second pipe 320 and the tool holder cavity 201; when the switching element 420 is in the third position, the switching element 420 closes the tool holder cavity 201 at the proximal end 12.

[0052] When the switching valve 400 is a mechanical switching structure, the switching element 420 is operated by the user through mechanical transmission or directly. When the switching valve 400 is an electromagnetic switching structure, the switching element 420 is operated by a driving element, which is controlled by a command signal.

[0053] Specifically, the valve body 410 provides a cavity for accommodating the switching element 420 and a channel for communicating the switching element 420 with the piping assembly 300. The valve body 410 surrounds the periphery of the switching element 420 and at least encloses a portion of the structure of the switching element 420; in this embodiment, the valve body 410 at least encloses the side of the switching element 420. The portion of the switching element 420 protruding from the valve body 410 allows the valve body 410 to be operated externally.

[0054] The switching valve 400 is also used to prevent both the first pipe 310 and the second pipe 320 from communicating with the tool holder cavity 201. For example... Figure 4-6 As shown, when the switch 420 is in the first position and the second position, the electrosurgical scalpel pen 1 is in the external function connected state. The connected state includes the first function corresponding to the first position and the second function corresponding to the second position. When the switch 420 is in the third position, the electrosurgical scalpel pen 1 is in the external function closed state.

[0055] In some other embodiments, the electrosurgical pen 1 may not include the tubing assembly 300, or the tubing assembly 300 may be an optional accessory for the electrosurgical pen 1.

[0056] In one embodiment, the blade 200, the first conduit 310, and the second conduit 320 are connected to the valve body 410 at intervals. The switching channel 401 forms at least a first port 402 and a second port 403 at intervals on the surface of the switching member 420. The interval between the first port 402 and the second port 403 is equal to the interval between the blade 200 and the first conduit 310, and the interval between the first port 402 and the second port 403 is equal to the interval between the blade 200 and the second conduit 320.

[0057] Specifically, such as Figure 4-6 As shown, a through switching channel 401 is formed inside the valve body 410. The switching channel 401 forms at least one spaced first port 402 and a second port 403 on the surface of the switching element 420. Simultaneously, through holes communicating with the blade cavity 201, the first pipe 310, and the second pipe 320 are respectively provided on the valve body 410. When the switching element 420 is in the first position, the switching channel 401 connects the first pipe 310 and the blade cavity 201, with the first port 402 and the second port 403 respectively connecting to the first pipe 310 and the blade cavity 201. When the switching element 420 is in the second position, the switching channel 401 connects the second pipe 320 and the blade cavity 201, with the first port 402 and the second port 403 respectively connecting to the blade cavity 201 and the second pipe 320. When the switching element 420 is in the third position, the switching element 420 closes the knife bar cavity 201 at the proximal end 12, and the positions of the first port 402 and the second port 403 match the wall surface of the valve body 410 without abutting the aforementioned through hole.

[0058] Furthermore, the switching channel 401 forms a bend inside the switching member 420, such that both the first port 402 and the second port 403 are located on the surface of the switching member 420. The bending angle is related to the interval; preferably, the bending angle is 90°, and the switching channel 401 has an L-shaped cross-section. In other embodiments, the switching channel 401 can also be arc-shaped, irregularly shaped, or other shapes.

[0059] In other embodiments, the switching channel 401 forms at least a first port 402, a second port 403, and a third port spaced apart on the surface of the switching member 420. The switching channel 401 is Y-shaped, and at a certain position, the first port 402, the second port 403, and the third port can all connect to the tool holder cavity 201, the first pipe 310, and the second pipe 320.

[0060] In one embodiment, at least a portion of the switching element 420 is cylindrical or spherical, and the switching element 420 is rotatable relative to the valve body 410 to switch between the first position, the second position, and the third position.

[0061] The switching element 420 includes a rotating portion 421 located inside the valve body 410 and an operating portion 422 located outside the valve body 410. The rotating portion 421 is cylindrical or spherical, and a switching channel 401, a first port 402, and a second port 403 are formed on the rotating portion 421. The operating portion 422 protrudes from the valve body 410 for operation by the user. When the rotating portion 421 is cylindrical or spherical, the bend of the switching channel 401 inside the switching element 420 is located at the central axis or center of the cylinder or sphere. Furthermore, the rotating portion 421 and the operating portion 422 can be integrally formed.

[0062] The first port 402 and the second port 403 are located at different positions on the outer circumference of the rotating part 421, and the interval between the first port 402 and the second port 403 is an arc connection. Preferably, the first port 402 and the second port 403 are located at different positions on the same circumference on the same horizontal plane.

[0063] The valve body 410 provides a cavity for accommodating the switching element 420. The cavity has an opening, and the portion of the switching element 420 extending from the opening is an operating portion 422. The diameter of the operating portion 422 is larger than the diameter of the opening, so that the operating portion 422 engages with the edge of the opening.

[0064] In one embodiment, such as Figure 7 As shown, the switching member 420 is provided with an indicator 423, which is used to indicate at least one of the first position, the second position and the third position.

[0065] Specifically, the indicator 423 is located on the operating part 422. The indicator 423 is an indicator mark protruding from the edge of the operating part 422, and / or the indicator 423 is a marker provided on the surface of the operating part 422. The indicator 423 corresponds to the position of the first port 402 and the second port 403 within the switching member 420, and the indicator 423 also includes a portion indicating that the switching channel 401 is in a non-connected position. The indicator 423 is used to indicate that the switching member 420 is in the first position, the second position, and the third position. Preferably, the shape and pattern of the marker 423 corresponding to each port or state are different.

[0066] In one embodiment, the valve body 410 is provided with a first interface pipe 411, a second interface pipe 412 and a third interface pipe 413 extending radially. The first interface pipe 411 is used to cooperate with the knife rod cavity 201, the second interface pipe 412 is used to be detachably connected to the first pipe 310, and the third interface pipe 413 is used to be detachably connected to the second pipe 320.

[0067] The first interface pipe 411, the second interface pipe 412, and the third interface pipe 413 are pipes extending radially outward from the valve body 410. The structures of the first interface pipe 411, the second interface pipe 412, and the third interface pipe 413 are respectively adapted to the objects to be connected. One end of the first interface pipe 411 penetrates into the valve body 410 and can be aligned with the first port 402 or the second port 403 of the switching element 420. The other end of the first interface pipe 411 is detachably connected to the housing 100 and connects to the knife rod cavity 201 through a cavity within the housing 100. One end of the second interface pipe 412 penetrates into the valve body 410 and can be aligned with the first port 402 or the second port 403 of the switching element 420. The other end of the second interface pipe 412 is detachably connected to one end of the first pipe 310. One end of the third interface tube 413 penetrates into the valve body 410 and can be aligned with the first port 402 or the second port 403 of the switching component 420. The other end of the third interface tube 413 is detachably connected to one end of the second pipe 320.

[0068] A reducing sleeve 140 is provided at the connection between the first interface tube 411 and the housing 100. The reducing sleeve 140 has a smaller diameter end and a larger diameter end. The smaller diameter end is located inside the housing 100, and the larger diameter end is sleeved on the outside of the first interface tube 411. The reducing sleeve 140 communicates with the tool holder cavity 201 and the first interface tube 411. At least one of the first interface tube 411, the second interface tube 412, and the third interface tube 413 is a quick-release pipe connector.

[0069] In one embodiment, the electrosurgical pen 1 further includes an electrode assembly 500, which includes an electrode head 510 and an electrode base 520. The electrode head 510 is mounted on the electrode base 520, and the electrode base 520 is detachably connected to the distal end 11.

[0070] Specifically, the electrode tip 510 can be of several types: blade-shaped tip, needle-shaped tip, ball-shaped tip, annular tungsten wire tip, triangular tungsten wire tip, etc., and of course, other types of electrode tips are also possible. In this embodiment, the electrode assembly 500 is detachably connected to the scalpel 200, and the electrode base 520 is located at the distal end 11 of the scalpel 200, that is, the electrode tip 510 is connected to the distal end 11 of the scalpel 200, and can also be detached from the electrosurgical pen 1. Therefore, when the doctor needs to use different shaped electrode tips 510, he only needs to remove the electrode assembly 500 from the scalpel 200 and replace it with the required electrode tip structure. At the same time, since the electrosurgical pen 1 needs to form a liquid suction and smoke aspiration channel inside, the electrode tip 510 and the electrode base 520 are hollow structures, connected to the scalpel cavity 201. The electrode tip 510 and the electrode base 520 are integrally formed or detachably connected. When integrally formed, the electrode tip 510 and the electrode base 520 are made of the same material.

[0071] The electrode assembly 500 also includes a knob and a sealing ring. In some embodiments, the knob is rotatably connected to the tool holder 200, and the integral structure is detachably connected to the rod assembly via the knob. Rotating the knob separates or connects the electrode holder 520 to the guide rod. The electrode head 510 and the electrode holder 520 can be connected as an integral structure. A sealing ring is provided between the knob and the rod assembly. The sealing ring is used for waterproofing and prevents water from entering the housing 100 from the gap between the knob and the tool holder 200, thereby preventing short circuit of the control component 130.

[0072] In one embodiment, the blade 200 includes: an inner tube 220 forming the blade cavity 201; and an outer tube 210 covering the inner tube 220, the outer tube 210 being made of an insulating material. Specifically, one end of the inner tube 220 is connected to the first interface tube 411, particularly via a reducing sleeve 140, and the other end is connected to the electrode assembly 500. The outer tube 210 is configured to completely cover the inner tube 220. Preferably, the outer tube 210 is made of plastic, such as a rubber sleeve or a thermoplastic film. Flue gas / liquid is transmitted via the path of the first interface tube 411, the blade cavity 201 of the inner tube 220, and the electrode assembly 500 (specifically, the electrode head 510).

[0073] One embodiment of this application also includes an electrosurgical system, comprising: a power supply device, including one of a high-frequency power supply and a plasma source; and an electrosurgical scalpel 1 as described above, the electrosurgical scalpel 1 having a wiring portion 120 for connecting to the power supply device; wherein, when the power supply device is the plasma source, the switching valve 400 is used to connect the first conduit 310 to the scalpel cavity 201; when the power supply device is the high-frequency power supply, the switching valve 400 is used to connect the second conduit 320 to the scalpel cavity 201.

[0074] The surgical system using the aforementioned electrosurgical scalpel pen 1 connects to different power supply devices via a switching valve 400, the first pipe 310, and the second pipe 320 to achieve different functions. The function corresponding to different pipes is selected by switching the valve 400, and the switching is achieved by a single action of a single component. The system can simultaneously realize the functions of a high-frequency electrosurgical pen and a plasma scalpel pen, and the function switching is convenient. The first pipe 310 and the second pipe 320 are respectively connected to the scalpel cavity 201, so that different functions share the scalpel cavity 201 within the scalpel 200, simplifying the system structure.

[0075] A wiring section 120 extends from the housing 100 and includes a plug at one end for connecting to the power supply interface of the power supply device. The high-frequency power supply and plasma source are respectively the high-frequency electrosurgical energy platform and the plasma device. A control component 130 is provided inside the housing 100, which can be used to control the start / stop of the electrosurgical scalpel pen 1, the operation of the electrode assembly 500, and the operation of the switching valve 400.

[0076] One end of the plug is inserted into the power supply interface of the high-frequency electrosurgical energy platform or the plasma equipment energy platform, and the other end of the plug is electrically connected to the circuit board of the control component 130. The circuit board is in conductive contact with the inner tube 220, and the inner tube 220 is in conductive contact with the electrode head 510, thereby completing the power transmission. When smoke extraction is required, and the electrosurgical scalpel pen 1 is used as a high-frequency electrosurgical pen, the plug is inserted into the power supply interface of the high-frequency electrosurgical energy platform, and the switching element 420 of the switching valve 400 is moved to the second position to form a smoke extraction channel. When liquid supply is required, and the electrosurgical scalpel pen 1 is used as a plasma scalpel pen, the plug is inserted into the power supply interface of the plasma equipment, and the switching element 420 of the switching valve 400 is moved to the first position to form a liquid supply channel.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electrosurgical scalpel pen, characterized in that, The electrosurgical scalpel includes: case; A tool holder is installed inside the housing. The tool holder includes a distal end and a proximal end opposite to each other. The distal end is used to install an electrode assembly. The tool holder also includes a tool holder cavity communicating between the distal end and the proximal end. A conduit assembly, selectively connected to the tool holder cavity, includes a first conduit and a second conduit; and A switching valve is located between the pipe assembly and the proximal end of the cutter bar, for communicating one of the first pipe and the second pipe with the cutter bar cavity.

2. The electrosurgical scalpel pen according to claim 1, characterized in that, The switching valve includes: The valve body is connected between the pipe assembly and the proximal end of the knife bar; and A switching element is movably disposed on the valve body, and the switching element has a switching channel that connects to the outside through the valve body; When the switching element is in the first position, the switching channel connects the first pipe and the tool holder cavity; when the switching element is in the second position, the switching channel connects the second pipe and the tool holder cavity; when the switching element is in the third position, the switching element closes the tool holder cavity at its proximal end.

3. The electrosurgical scalpel pen according to claim 2, characterized in that, The cutter bar, the first pipe, and the second pipe are connected to the valve body at intervals. The switching channel forms at least a first port and a second port at intervals on the surface of the switching element. The interval between the first port and the second port is equal to the interval between the cutter bar and the first pipe, and the interval between the first port and the second port is equal to the interval between the cutter bar and the second pipe.

4. The electrosurgical scalpel pen according to claim 2 or 3, characterized in that, At least a portion of the switching element is cylindrical or spherical, and the switching element is rotatable relative to the valve body to switch between the first position, the second position, and the third position.

5. The electrosurgical scalpel pen according to claim 2 or 3, characterized in that, The switching element is provided with an indicator, which is used to indicate at least one of the first position, the second position, and the third position.

6. The electrosurgical scalpel pen according to claim 2 or 3, characterized in that, The valve body is provided with a first interface pipe, a second interface pipe and a third interface pipe extending radially. The first interface pipe is used to cooperate with the knife rod cavity, the second interface pipe is used to be detachably connected to the first pipe, and the third interface pipe is used to be detachably connected to the second pipe.

7. The electrosurgical scalpel pen according to claim 1, characterized in that, The electrosurgical pen also includes an electrode assembly, which includes an electrode head and an electrode base. The electrode head is mounted on the electrode base, and the electrode base is detachably connected to the distal end.

8. The electrosurgical scalpel pen according to claim 1, characterized in that, The tool holder includes: Inner tube, forming the tool holder cavity; and An outer tube is provided to cover the inner tube, and the outer tube is made of an insulating material.

9. The electrosurgical scalpel pen according to claim 1, characterized in that, The first pipe is used to connect to the liquid supply pump, and the second pipe is used to connect to the smoke pump.

10. An electrosurgical system, characterized in that, include: Power supply equipment, including one of a high-frequency power supply and a plasma source; and The electrosurgical scalpel pen according to any one of claims 1-9, wherein the electrosurgical scalpel pen is provided with a wiring portion for connecting the power supply device; in, When the power supply device is the plasma source, the switching valve is used to connect the first pipe to the tool holder cavity; when the power supply device is the high-frequency power supply, the switching valve is used to connect the second pipe to the tool holder cavity.

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