Electrosurgical Instruments

Abstract

The electrosurgical instrument 100 belongs to the field of medical devices and includes an end execution component 30 and a handle component 10 that operably supplies driving force and electrosurgical energy to the end execution component 30. The handle component 10 includes a gripping main body 11 and a closure trigger 12 pivotally connected to the gripping main body 11. The gripping main body 11 has a first housing lumen 11c, and the closure trigger 12 has a second housing lumen 12a. An activation switch 14 that enables / disables the transmission of electrosurgical energy is provided within the first housing lumen 11c and / or the second housing lumen 12a. When the closure trigger 12 pivots toward the gripping main body 11 and reaches an activation position, the activation switch 14 is triggered to a conductive state, allowing electrosurgical energy to be supplied to the end execution component 30. The electrosurgical instrument 100 of the present invention shortens the operation time for closing and coagulating (cauterizing and sealing) tissue and prevents accidental activation of the activation switch 14.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to a Chinese patent application filed with the China Patent Office on November 4, 2022, bearing application number 202211378660.4 and entitled "Electrosurgical Instrument," the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the field of medical devices, and more particularly to electrosurgical instruments. [Background technology]

[0003] High-frequency electrosurgical knives are electrosurgical instruments used for tissue cutting. When high-frequency, high-voltage current generated at the tip of the electrode comes into contact with biological tissue, it heats the tissue, separating and coagulating it, thereby achieving the goals of cutting and hemostasis. Bipolar electrosurgical knives are high-frequency electrosurgical knives with bipolar function. When high-frequency, high-voltage current flows between the two poles of the bipolar instrument, it dehydrates and contracts the blood vessel wall, coagulating the blood inside the vessel, integrating the blood vessel and the thrombus, thereby separating and coagulating the tissue. Because bipolar electrosurgical knives cause relatively little thermal damage and allow for control of the electrical cutting speed and electrical coagulation depth, they are widely used in a variety of precision surgical procedures, including neurosurgery, vascular surgery, microsurgery, and plastic surgery.

[0004] Conventional bipolar electrosurgical scalpels typically include a handle component, a thin body component, and an end execution unit. The handle component is connected to a host capable of outputting high-frequency, high-voltage current. The end execution unit includes a pair of gripping members used to grasp tissue to be severed. These gripping members are driven by a drive mechanism provided on the handle component and a transmission mechanism provided within the handle component and the thin body. To use this bipolar electrosurgical scalpel, a trigger on the handle component is operated to close the gripping members and grasp the tissue to be severed, and a trigger button on the handle component is operated to activate high-frequency energy. Because tissue grasping and energy activation are performed separately, the number of operating steps is large, making it difficult for surgeons to complete surgery more efficiently and comfortably. Furthermore, the trigger button on most bipolar electrosurgical scalpels is exposed on the outside of the handle component, posing a safety risk due to the risk of accidental activation by the user. Summary of the Invention [Problem to be solved by the invention]

[0005] In contrast to this, the present invention proposes an electrosurgical instrument that is easy to operate and does not pose any safety problems. [Means for solving the problem]

[0006] For the above technical problems, the present invention provides the following technical solutions:

[0007] An electrosurgical instrument comprising: an end execution component; and a handle component for operably supplying driving force and electrosurgical energy to the end execution component, the handle component including a gripping main body and a closure trigger pivotally connected to the gripping main body, the gripping main body having a first housing cavity and the closure trigger having a second housing cavity, an activation switch capable of conducting or cutting off transmission of electrosurgical energy provided within the first housing cavity and / or the second housing cavity, wherein when the closure trigger pivots toward the gripping main body and reaches an activation position, the activation switch is triggered to a conducting state and electrosurgical energy is supplied to the end execution component.

[0008] In some embodiments of the invention, when the end execution component is in an open state, at least a portion of the closure trigger is received within a first receiving cavity of the gripping body.

[0009] In some embodiments of the present invention, when the closure trigger pivots toward the gripping body, the area over which the closure trigger enters the first housing cavity gradually increases, and when the closure trigger pivots away from the gripping body, the area over which the closure trigger enters the first housing cavity gradually decreases.

[0010] Some embodiments of the invention further include a power supply connection for electrically connecting to a host that generates electrosurgical energy, and a control circuit board electrically connected to the power supply connection, with an activation circuit disposed on the control circuit board, and the activation switch operably conducting or disconnecting the activation circuit to control the output of electrosurgical energy to an end effector component.

[0011] In some embodiments of the present invention, the activation switch is a button switch, and the first housing cavity and / or the second housing cavity further include a trigger component for triggering the activation switch, and when the closure trigger pivots to an activation position, the trigger component deviates from an initial state and acts on the activation switch, causing the activation switch to be conductive.

[0012] In some embodiments of the invention, the activation switch is disposed within the second housing cavity, and the activation switch is operably triggered into a conductive state when the closure trigger is pivoted to an activated position.

[0013] In some embodiments of the present invention, a trigger component is further provided within the second housing cavity, the trigger component including a trigger rod that can be operated to deviate from an initial state and act on the activation switch to enter a conductive state, and the trigger component includes a return member connected to the trigger rod, the return member providing a biasing force that maintains the trigger rod in the initial state.

[0014] In some embodiments of the present invention, a mounting seat is provided within the second housing cavity, the trigger rod of the trigger component is slidably provided on the mounting seat, and the trigger rod slides on the mounting seat in a first direction to trigger the activation switch to turn on or off, and the return member is provided on the mounting seat to provide a biasing force to the trigger rod.

[0015] In some embodiments of the invention, one end of the return member acts on the activation switch and the other end acts on a trigger rod of the trigger component, such that the activation switch remains conductive during at least a portion of the pivotal movement of the closure trigger from an activated position to an open position.

[0016] In some embodiments of the present invention, a mounting seat is provided within the second housing cavity, the trigger rod of the trigger component is pivotally provided on the mounting seat, and the trigger rod pivots along a pivot in a third direction at the mounting seat to trigger the activation switch to be conductive or disconnected, and the return member is provided on the mounting seat to provide a biasing force to the trigger rod.

[0017] In some embodiments of the present invention, an abutment is provided within the first housing cavity to cooperate with the trigger component, and when the closure trigger pivots to an activated position, the abutment abuts against one end of the trigger rod, causing the trigger rod to act on the activation switch against the biasing force of the return member, thereby turning the activation switch into a conductive state.

[0018] In some embodiments of the present invention, the activation switch and a control circuit board are further mounted on the mounting seat.

[0019] In some embodiments of the present invention, a trigger component is further provided within the second housing cavity, the trigger component being provided on a surface of the case for gripping by a user of the closure trigger, and the trigger component is operable to conduct the activation switch when the closure trigger is pivoted to an activated position.

[0020] In some embodiments of the present invention, the closure trigger has an attachment port, the pressing side of the activation switch faces the attachment port, the trigger component includes a sealing lid attached to the attachment port, the sealing lid has an elastic deformation region facing the activation switch, and when the elastic deformation region of the sealing lid is triggered and deforms in a direction approaching the activation switch to a set position, the activation switch is made conductive.

[0021] In some embodiments of the present invention, the pivoting trigger force of the closure trigger is less than the elastic deformation trigger force of the sealing lid.

[0022] In some embodiments of the present invention, a trigger component is further provided within the first housing cavity, the trigger component including a trigger rod slidably connected to a mounting seat, the trigger rod sliding on the mounting seat along a second direction to trigger the activation switch to conduct or disconnect, and the trigger component including a return member attached to the mounting seat and acting on the trigger rod.

[0023] In some embodiments of the present invention, the activation switch is a contact switch, and the activation switch includes at least one first contact located in a first housing cavity and at least one second contact located in a second housing cavity, the first contact being electrically connected to the power supply connection, and the first contact or the second contact being electrically connected to the control circuit board, and when the closure trigger is pivoted to the activation position, the second contact abuts the first contact to conduct the activation circuit.

[0024] In some embodiments of the present invention, a guide structure is provided between the grip body and the closure trigger, and the guide structure is used to guide the swing direction of the closure trigger.

[0025] In some embodiments of the invention, the handle component further includes a first elastic member and a second elastic member, and the closure trigger pivots toward the gripping body against the elastic force of the second elastic member to reach the closed position, and the closure trigger pivots toward the gripping body against the elastic force of the first elastic member and the second elastic member to reach the activated position.

[0026] Some embodiments of the invention further comprise an elongate body component, said elongate body component defining a longitudinal axis and including an outer tube, a proximal end of said outer tube extending into said grip body.

[0027] In some embodiments of the invention, the closure trigger is operably fitted to the proximal portion of the outer tube via a connection portion formed at an upper end of the closure trigger and pivotally attached to a gripping body.

[0028] In some embodiments of the present invention, the gripping main body has a locking member at a portion located at the proximal end of the outer tube, and the outer tube located within the gripping main body has a proximal spacer, a drive collar, and a retaining ring fitted thereon in this order from the proximal end to the distal end, the retaining ring and the proximal spacer are each fixedly connected to the outer tube, the drive collar is slidable along the outer tube, a spring spacer is provided at the proximal end of the drive collar, a connecting portion of the closure trigger is fitted into the drive collar and both ends thereof abut against the spring spacer and the retaining ring, respectively, a first elastic member is provided between the spring spacer and the proximal spacer, and a second elastic member is provided between the proximal spacer and the locking member, and the elastic modulus of the first elastic member is greater than the elastic modulus of the second elastic member.

[0029] In some embodiments of the present invention, the handle component further includes a cut trigger pivotally connected to the gripping body, the cut trigger operably controlling a knife actuating member in the end execution component to perform a cut operation.

[0030] The present invention also provides an electrosurgical instrument comprising a handle component for operably supplying driving force and electrosurgical energy to an end execution component, the handle component including a gripping main body and a closure trigger pivotally connected to the gripping main body, the gripping main body having a first housing cavity, the closure trigger having a second housing cavity, an activation switch provided within the second housing cavity for enabling or disabling transmission of electrosurgical energy, as the closure trigger pivots toward the gripping main body, the area over which the closure trigger enters the first housing cavity gradually increases, and as the closure trigger pivots to the activated position, the activation switch is triggered to a conducting state, as the closure trigger pivots away from the gripping main body, the area over which the closure trigger enters the first housing cavity gradually decreases, and as the closure trigger pivots to the non-activated position, the activation switch is switched to a disconnecting state. [Effects of the Invention]

[0031] The technical solution of the present invention has the following technical advantages over the prior art:

[0032] In the electrosurgical instrument provided by the present invention, the gripping main body and / or closure trigger have a housing cavity, and an activation switch for connecting or disconnecting the activation circuit is located within the housing cavity. When the closure trigger pivots from its initial position toward the gripping main body to reach the closed position and then pivots further to the activation position, the activation switch is triggered to activate the electrosurgical energy. This realizes a one-touch interlocking activation circuit via the closure trigger, effectively shortening the operation time for closing and coagulating (cauterizing and sealing) tissue. At the same time, because the activation switch is located within the gripping main body and / or closure trigger, the problem of accidentally touching the activation button is effectively prevented, reducing safety risks to the patient. [Brief explanation of the drawings]

[0033] The following detailed description of the preferred embodiments of the present invention will be given with reference to the accompanying drawings, which will be helpful in understanding the objects and advantages of the present invention. [Figure 1] FIG. 1 is a structural diagram of a specific embodiment of the electrosurgical instrument of the present invention. [Figure 2] FIG. 2 is a diagram of an electrosurgical instrument having a plug-type power connection according to the present invention. [Figure 3] FIG. 3 is a diagram of an electrosurgical instrument having an electrical slip ring type power connection according to the present invention. [Figure 4] FIG. 4 is a diagram of one specific embodiment using a button-type activation switch in an electrosurgical instrument of the present invention. [Figure 5A] FIG. 5A illustrates a specific embodiment of the electrosurgical instrument of the present invention with the closure trigger in a closed position. [Figure 5B] FIG. 5B illustrates a specific embodiment of the electrosurgical instrument of the present invention with the closure trigger in an activated position. [Figure 5C]FIG. 5C illustrates a specific embodiment of the electrosurgical instrument of the present invention with the closure trigger in an initial open position. [Figure 6] FIG. 6 is a structural diagram of the inside of the closure trigger in a first specific embodiment of the electrosurgical instrument of the present invention using a button switch. [Figure 7] FIG. 7 is a structural diagram of a first trigger component in a first specific embodiment of an electrosurgical instrument using a button switch according to the present invention. [Figure 8] FIG. 8 is a structural diagram of a button switch and a control circuit board in a first specific embodiment of the electrosurgical instrument according to the present invention. [Figure 9A] FIG. 9A is a structural diagram of the initial open position of a second specific embodiment of the electrosurgical instrument of the present invention using a button switch. [Figure 9B] FIG. 9B is a structural diagram of the activation position of a second specific embodiment of the electrosurgical instrument using a button switch of the present invention. [Figure 10A] FIG. 10A is a structural diagram of the initial open position of a third specific embodiment of the electrosurgical instrument of the present invention using a button switch. [Figure 10B] FIG. 10B is a structural diagram of the activation position of a third specific embodiment of the electrosurgical instrument using a button switch of the present invention. [Figure 11A] FIG. 11A is a structural diagram of the initial open position of a fourth specific embodiment of the electrosurgical instrument of the present invention using a button switch. [Figure 11B] FIG. 11B is a structural diagram of the activation position of a fourth specific embodiment of the electrosurgical instrument using a button switch of the present invention. [Figure 12A] FIG. 12A is a structural diagram of the initial open position of a first specific embodiment using a contact switch of the electrosurgical instrument of the present invention. [Figure 12B] FIG. 12B is a structural diagram of the activation position of a first specific embodiment of the electrosurgical instrument using a contact switch of the present invention. [Figure 13]FIG. 13 is a structural diagram of a pin-type contact in a first specific embodiment using a contact-type switch in an electrosurgical instrument of the present invention. [Figure 14A] FIG. 14A is a structural diagram of a second specific embodiment of the electrosurgical instrument of the present invention using a contact switch in an initial open position. [Figure 14B] FIG. 14B is a structural diagram of the closure trigger side of a second specific embodiment of an electrosurgical instrument of the present invention using a contact switch. DETAILED DESCRIPTION OF THE INVENTION

[0034] The technical solutions of the present invention will be described clearly and completely below with reference to the drawings. However, the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without any creative work fall within the scope of protection of the present invention.

[0035] In describing the present invention, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., used to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are merely for the purpose of explaining the present invention and simplifying the description, and should not be construed as limiting, as they do not indicate or imply that the devices or components shown have a particular orientation or must be configured and operated in a particular orientation. Additionally, the terms "first," "second," and "third" are used for descriptive purposes only and do not indicate or imply relative importance.

[0036] In describing the present invention, terms such as "attached," "coupled," and "connected" should be understood in a broad sense unless otherwise specified and limited. For example, they may be fixedly connected, detachably connected, or integrally connected. They may be directly connected or indirectly connected via an intermediate medium. The interiors of two components may be in communication with each other. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention depending on the specific circumstances.

[0037] Furthermore, the technical features relating to different embodiments of the present invention described below can be combined as long as they are not inconsistent with each other.

[0038] In each embodiment of the present invention, the "distal end / side" refers to the side that is farther from the operator when operating the surgical instrument, and the "proximal end / side" refers to the end / side that is closer to the operator when operating the surgical instrument.

[0039] The present invention relates generally to medical devices, and more particularly to electrosurgical instruments, sometimes referred to as bipolar electrocauteries, which may be used to cut, coagulate (cauterize and seal), and / or grasp tissue during surgical procedures, whether open, laparoscopic, or endoscopic. While the surgical instrument operably transmits electrosurgical energy to an end execution component 30 to act on tissue to achieve coagulation (cauterize and seal), as shown in FIG. 1 , the surgical instrument according to the present disclosure may also be used to grasp and manipulate tissue even when electrosurgical energy is not being supplied to the end execution component 30. The clamps of the end execution component 30 may be selectively opened, allowing the end execution component 30 to grasp tissue and apply electrosurgical energy to the tissue.

[0040] As shown in FIG. 1, the electrosurgical instrument 100 provided by the present invention is typically connected to a host (not shown) that outputs electrosurgical energy. The same electrosurgical instrument 100 can be used in combination with multiple different hosts via an external cable 40. The electrosurgical instrument 100 includes a handle component 10, an elongated body component 20, and an end execution component 30, connected in this order from the proximal end to the distal end. The proximal end of the handle component 10 is provided with a power supply connection 15 for electrical connection with the host. For example, in the specific embodiment shown in FIG. 2, the power supply connection 15 is configured in the form of a connector or plug, and is configured to easily connect to an output terminal or output connector of the host. In an alternative embodiment, as shown in FIG. 3, the power supply connection 15' may be configured in the form of an electrical slip ring, providing a secure electrical connection as the execution member rotates.

[0041] The end execution component 30 is used to manipulate tissue to perform specific surgical operations, such as grasping, coagulating, and cutting tissue. Referring to FIG. 1 , the end execution component 30 includes a first clamp 31 and a second clamp 32 pivotally connected to each other, which pivot toward each other to grasp tissue and away from each other to release tissue. Alternatively, in an alternative embodiment, the first clamp 31 of the end execution component 30 is operably pivoted toward the second clamp 32 until it closes and grasps tissue. The first clamp 31 is also pivoted away from the second clamp 32 until it opens and releases tissue, or vice versa. Furthermore, both the first clamp 31 and the second clamp 32 include electrodes that contact tissue to transmit electrosurgical energy to the tissue to achieve electrocoagulation.

[0042] As further shown in FIGS. 1-3 , at least a portion of the handle component 10 is gripped by a user, allowing the operator to easily manipulate the surgical instrument. The handle component 10 operably supplies a driving force, such as a closing driving force or a cutting driving force, to the end execution component 30. The handle component 10 includes a gripping main body 11 that can be gripped by a user and a closure trigger 12 pivotally connected to the gripping main body 11. The user operates the closure trigger 12 to control the closing or opening operation of the end execution component 30. In a specific embodiment, the gripping main body 11 includes a first half case and a second half case, which can be detachably connected by crimping, fastening members, or the like. The overall shape of the gripping main body 11 is generally T-shaped and includes a main body portion 11a extending in the direction of a longitudinal axis C and a grip portion 11b extending in a direction substantially perpendicular to the longitudinal axis C or at a predetermined angle relative to the longitudinal axis C. A first housing cavity 11c is formed within the main body portion 11a and the grip portion 11b and may house a drive mechanism, an actuation circuit, or the like. The elongated body component 20 includes a plurality of longitudinal members that operably connect the end execution component 30 to a plurality of actuators housed in the handle component 10. The elongated body component 20 includes an outer tube 201 that defines the outer surface of the elongated body and allows other components to move through and pass within it. For example, as specifically shown in FIG. 4 , the outer tube 201 is configured for longitudinal movement relative to an inner actuator member 202 that is axially housed within the outer tube 201. The inner actuator member 202 may be a rod, shaft, stamped metal component, or other suitable metal component.

[0043] 4, the closure trigger 12 is operably fitted to the proximal portion of the elongated body component 20 via a connecting portion 123; specifically, the connecting portion 123 is formed at the upper end of the closure trigger 12 and connected to the proximal portion of the outer tube 201. The connecting portion 123 is pivotally attached within the case of the grip main body 11 via a pivot 120. Specifically, the connecting portion 123 extends upwardly around opposite sides of a drive collar 124 on the outer tube 201, and is provided with arcuate proximal and distal drive surfaces 123a and 123b thereon. The proximal drive surface 123a is bonded to a distally facing surface of a spring spacer 124a of the drive collar 124, a retaining ring 125 is further fitted onto the outer tube 201, the retaining ring 125 moving with the longitudinal movement of the outer tube 201, and the drive surface 123b is bonded to a proximally facing surface of the retaining ring 125. Furthermore, a proximal spacer 126 is fitted onto the outer tube 201, the proximal spacer 126 moving with the longitudinal movement of the outer tube 201, and a first elastic member 121 is fitted onto the outer tube 201 and provided between a distal surface of the proximal spacer 126 and the drive collar 124. A locking member 127 is provided on the case of the grip main body 11, and a second elastic member 122 is provided between a proximal surface of the proximal spacer 126 and a distal surface of the locking member 127. In some specific embodiments, the modulus of elasticity of the second elastic member 122 is smaller than that of the first elastic member 121, providing a different gripping feel to the user when the first elastic member 121 and / or the second elastic member 122 are compressed.

[0044] 4 , handle component 10 further includes a cutting trigger 13 pivotally connected to gripping body 11, and a user operates cutting trigger 13 to cause knife actuation member 203 within end execution component 30 to perform a cutting action. Electrosurgical energy transmitting cables 401 and 402 are further provided within outer tube 201, and distal ends of cables 401 and 402 are connected to first clamp 31 and second clamp 32 of end execution component 30, respectively, to transmit high frequency electrosurgical energy to the tissue coagulating electrodes of first clamp 31 and second clamp 32. In some specific embodiments, elongated body component 20 further includes an inner support tube 204, which is used to support and guide the positioning of inner actuator member 202, knife actuation member 203, and cables 401 and 402. A knob 50 is provided at the distal end of the handle component 10, and a user can rotate the elongated body component 20 and the end execution component 30 as a whole around the longitudinal axis C by rotating the knob 50. The closure trigger 12 extends so that the side remote from the connection portion 123 faces the main body portion 11a of the grip main body 11. The grip portion 11b of the grip main body 11 has an opening 110 on the side facing the closure trigger 12, and the closure trigger 12 slides along the opening 110, allowing it to partially slide in and out of the first housing cavity 11c.

[0045] Next, with reference to the drawings, a specific structure for realizing the closing, activation, and opening operations of the electrosurgical instrument 100 provided by the present invention will be described in detail. Specifically, as shown in Fig. 5A, when the closure trigger 12 is pivoted toward the gripping main body 11 (arrow A), the area of ​​the closure trigger 12 entering the first housing cavity 11c gradually increases, and the proximal drive surface 123a of the connection portion 123 of the closure trigger 12 moves the spring spacer 124a of the drive collar 124 proximally (arrow P1). Because the elastic modulus of the first elastic member 121 is greater than that of the second elastic member 122, the proximal spacer 126 also moves proximally (arrow P1) under the action of the first elastic member 121, further compressing the second elastic member 122. Since the proximal spacer 126 is fixedly connected longitudinally to the outer tube 201 of the elongated body component 20, the outer tube 201 is moved proximally (arrow P1), allowing relative movement between the outer tube 201 and the inner actuator member 202, gradually reducing the angle between the first clamp 31 and the second clamp 32 of the end execution component 30, until the closure trigger 12 pivots to the closed position, causing the end execution component 30 to be in a closed state.

[0046] As shown in FIG. 5B , when the closure trigger 12 is further pivoted toward the gripping main body 11, the area of ​​the closure trigger 12 that enters the first housing cavity 11c further increases, causing the proximal drive surface 123a of the connection portion 123 of the closure trigger 12 to move the spring spacer 124a of the drive collar 124 further proximally (arrow P2), further compressing the first elastic member 121. Because the spring spacer 124a is movable longitudinally relative to the outer tube 201 of the elongated body component 20, the outer tube 201 does not move proximally with the spring spacer 124a, and the end execution component 30 remains closed. When the closure trigger 12 is pivoted to the activated position, for example, as shown in FIG. 5B , the trigger component 16 is triggered, causing an activation circuit to be conducted, and electrosurgical energy is supplied to the end execution component 30. Since the elastic modulus of the first elastic member 121 is greater than that of the second elastic member 122, when the closure trigger 12 is pivoted from the closed position to the activated position, the first elastic member 121 provides a greater biasing force to the operator, and the operator can distinguish between the closing operation and the activation operation due to the difference in gripping feel.

[0047] 5C , after the activation operation is completed, when the closure trigger 12 is pivoted away from the gripping main body 11 (arrow B), the area of ​​the closure trigger 12 that enters the first housing cavity 11c gradually decreases, and the distal drive surface 123b of the closure trigger 12, under the action of the restoring force of the first elastic member 121 and / or the second elastic member 122, moves the retaining ring 125 distally (arrow D), moving the outer tube 201 of the elongated body component 20 distally relative to the inner actuator member 202, gradually increasing the angle between the first clamp 31 and the second clamp 32 of the end execution component 30, gradually opening the end execution component 30 until the closure trigger 12 pivots to the open position, reaching the maximum open state. In some specific embodiments, when the closure trigger 12 pivots to the open position, at least a portion of the closure trigger 12 is located within the first housing cavity 11c. Of course, the user can alternate between closing and opening to achieve grasping and releasing of the target tissue, and may not perform electrocoagulation.

[0048] Furthermore, as shown in FIGS. 2-4, a guide structure is provided between the inner wall of the first housing cavity 11c of the grip main body 11 and the outer wall surface of the closure trigger 12 to support and guide the pivotal movement of the closure trigger 12 and prevent rattling of the closure trigger 12 within the first housing cavity 11c. The guide structure includes a first guide protrusion 111 or a first guide recess provided on the inner wall of the first housing cavity 11c and a matching second guide recess or a matching second guide protrusion provided on the outer wall surface of the closure trigger 12. For example, the first guide protrusion 111 on the inner wall of the first housing cavity 11c and the second guide recess (not shown) on the outer wall surface of the closure trigger 12 can be matched to provide directional guidance for the closing or opening operation of the closure trigger 12. Of course, the first guide protrusion 111 on the inner wall of the first housing cavity 11c and the second guide protrusion (not shown) on the outer wall surface of the closure trigger 12 can also be matched to provide directional guidance for the relative sliding movement between them. In a specific embodiment, the closure trigger 12 includes a second housing cavity 12a, which is an open cavity that opens toward the grasping main body 11. An activation switch is provided within the first housing cavity 11c and / or the second housing cavity 12a, and the activation switch is configured to connect or disconnect the electrosurgical energy of the electrosurgical instrument 100. For example, when the closure trigger 12 pivots to the activation position, the activation switch 14 is triggered, switching the activation circuit to a conductive state, and the electrosurgical energy output from the host is output to the end execution component 30 via the power supply connection 15, applying electrosurgical energy to the tissue of the end execution component 30 for coagulation. This allows for one-touch closure and activation operations using the closure trigger 12 and shortens the time required for grasping and coagulating tissue using the instrument. At the same time, because the activation switch is located within the grasping main body 11 and / or the closure trigger 12, it effectively prevents accidental touching of the activation button and reduces safety risks to the patient.

[0049] In another alternative embodiment, the side of the closure trigger 12 facing the gripping main body 11 is an end face of a substance without an open cavity, and the activation switch 14 is provided in the first housing cavity 11c of the gripping main body 11. A trigger structure for triggering the activation switch is provided at the end of the closure trigger 12. When the closure trigger 12 pivots inside the first housing cavity 11c of the gripping main body 11 to an activation position, the activation switch 14 can be triggered to a conductive state. Corresponding to this embodiment, the side of the gripping main body 11 facing the closure trigger 12 is an end face of a substance without an open cavity. The activation switch is provided in the second housing cavity 12a of the closure trigger 12, and a trigger structure for triggering the activation switch is provided at the end of the gripping main body 11.

[0050] Specifically, at least a portion of the activation circuit is disposed on the control circuit board 18, and the activation switch is located on a connection cable between the power supply connection portion 15 and the control circuit board 18. In one alternative embodiment, the control circuit board 18 is mounted in the second housing cavity 12a of the closure trigger 12. Even when the closure trigger 12 is pivoted to the open position, a portion of the closure trigger 12 is located in the first housing cavity 11c. Therefore, by positioning the control circuit board 18 in the second housing cavity 12a, the control circuit board 18 is protected and external dust or liquids can be prevented from directly contacting the control circuit board 18 through the gap between the gripping main body 11 and the closure trigger 12. In another alternative embodiment, the control circuit board 18 may be mounted in the first housing cavity 11c of the gripping main body 11.

[0051] The activation switch 14 may be a button switch, in which pressing the button of the button switch makes the circuit conductive and releasing the button breaks the circuit. Alternatively, in another alternative embodiment, the activation switch 14 may be a contact switch, in which contact or separation of two contacts makes or breaks the circuit. The activation switch 14 may also be in other switch forms capable of making or breaking the circuit conductive. For example, in specific embodiments in which some activation switches 14 are button switches, a trigger component 16 for triggering the button switch is further provided in the first housing cavity 11c and / or the second housing cavity 12a. When the closure trigger 12 is pivoted to the first position, the trigger component deviates from its initial state and acts on the button switch to make the activation circuit conductive.

[0052] 2-8 show one embodiment of an electrosurgical instrument 100 provided by the present invention. In this embodiment, the activation switch 14 is provided as a button switch, and a trigger component 16 for triggering the activation switch 14 is provided in the second housing cavity 12a of the closure trigger 12. The trigger component 16 includes a trigger rod 161 slidably connected to a mounting seat 19 and a return member 162 attached to the mounting seat 19 and acting on the trigger rod 161. The trigger rod 161 slides on the mounting seat 19 in a first direction to trigger the activation switch 14 to turn on or off. Here, the activation switch 14 is provided in the second housing cavity 12a, and an abutment portion 112 for cooperating with the trigger component 16 is provided in the first housing cavity 11c. When the closure trigger 12 is in a non-activation position (e.g., a closed position, an open position, or a position in an intermediate state), the trigger rod 161 is in its initial position under the action of a biasing force provided by a return member 162, and at this time, the trigger rod 161 maintains a predetermined distance from the activation switch 14. When the closure trigger 12 pivots to the activation position, a first end 161a (proximal end) of the trigger rod 161 abuts against the abutment member 112, and a second end 161b (distal end) of the trigger rod 161 acts on the activation switch 14 against the elastic force of the return member 162, pressing the activation switch 14 and conducting the activation circuit. When the closure trigger 12 pivots away from the gripping body 11, the trigger rod 161 moves together with the closure trigger 12 and moves away from the abutment member 112, and under the action of the return member 162, the trigger rod 161 slides again in a direction away from the activation switch 14 and returns to its initial position.

[0053] In an alternative embodiment, one end of the return 162 abuts the trigger rod 161 and the other end of the return 162 directly abuts the activation switch 14, maintaining the activation switch 14 in an activated state during at least a portion of the process in which the closure trigger 12 moves from the activated position to the inactivated position of the activation switch 14. Specifically, when the trigger rod 161 is pressed, the return 162 is compressed between the trigger rod 161 and the activation switch 14, applying a biasing force to the activation switch 14. If the closure trigger 12 accidentally moves distally a predetermined angle during the process of operating the cutter trigger 13, for example, if the pivot angle of the closure trigger 12 is less than 5°, the return 162 (now in a slightly decompressed state) maintains the spring force on the activation switch 14 to compensate for or partially counteract the effect of the distal movement of the closure trigger 12. During the distal movement of the closure trigger 12, the spring force maintained by the return 162 on the activation switch 14 is large enough to maintain the activation switch 14 in a conductive state, preventing the activation switch 14 from being released or re-activated during the operation of the cutoff trigger 13. During the operation of moving the closure trigger 12 away from the abutment 112 to switch the end execution component 30 to the open state, the force moving the trigger rod 161 is much smaller than the force triggering the activation switch 14, so the return 162 moves together with the trigger rod 161 to the initial position, and the spring force acting on the activation switch 14 is reduced or eliminated, thereby releasing the activation switch 14.

[0054] As shown in FIGS. 2-4, the abutment portion 112 in the first housing cavity 11c is formed on the inner wall surface of the first housing cavity 11c. More specifically, the inner wall surface is convex compared to other areas of the first housing cavity 11c, and the surface cooperating with the trigger rod 161 is flat. As shown in FIGS. 5-7, the end of the first end 161a of the trigger rod 161 is formed into an arc-shaped surface to enable smooth contact with the abutment portion 112. The second end 161b of the trigger rod 161 is formed into a cylindrical rod-like body and makes surface contact with the pressing surface of the activation switch 14 to ensure reliable triggering. A slide portion 161c is provided between the first end 161a and the second end 161b of the trigger rod 161. 7, the mounting seat 19 is provided with a first mounting groove 191 extending in a first direction, and the sliding portion 161c of the trigger rod 161 is slidably connected to the wall of the first mounting groove 191. A first through hole and a second through hole are provided on opposite sides of the first mounting groove 191, and the first end 161a and the second end 161b of the trigger rod 161 can protrude out of the first mounting groove 191 through the first through hole and the second through hole, respectively. In this embodiment, the return piece 162 is a compression spring, and the compression spring is fitted into the second end 161b of the trigger rod 161, with one end abutting the sliding portion 161c.

[0055] In an initial state or a non-activated state, the compression spring causes the slide portion 161c of the trigger rod 161 to abut against a first side surface (proximal side surface) of the first mounting groove 191, and positions at least a portion of the first end 161a of the trigger rod 161 outside the first mounting groove 191. When the closure trigger 12 is operated in a direction approaching the grip main body 11, the first end 161a of the trigger rod 161 of the trigger component 16 abuts against the abutment portion 112 of the grip main body 11, and then the trigger rod 161 is pushed in a direction away from the abutment portion 112, and the end of the second end 161b of the trigger rod 161 is positioned outside the first mounting groove 191, and acts on the button switch 14a located outside the first mounting groove 191.

[0056] 6 and 7, in one alternative embodiment, the activation switch 14 and the control circuit board 18 are mounted on the mounting seat 19 at the same time, achieving integrated mounting. A second mounting groove 192 adjacent to the first mounting groove 191 is further provided on the mounting seat 19, and the activation switch 14 is engaged in the second mounting groove 192, with the pressing portion of the activation switch 14 facing the second through-hole of the first mounting groove 191 so that the second end 161b of the trigger rod 161 can easily press and trigger it.

[0057] 7, the mounting seat 19 is further provided with a cable mounting portion 193 for securing a cable. The cable mounting portion 193 is formed in the shape of a rod extending in the second direction, with a plurality of wire fasteners provided on the rod for tying and securing the cable. The rod is installed adjacent to the inner wall of the distal end of the closure trigger 12. The mounting seat 19 is fixed to the inner wall of the second housing cavity 12a of the closure trigger 12 by an engagement or plug-in connection method. Specifically, a slot formed with a plurality of ribs is provided on the inner wall of the second housing cavity 12a of the closure trigger 12, the outer wall of the mounting seat 19 is inserted into this slot, and positioning protrusions and positioning recesses are provided between the slot and the mounting seat 19. The deformable positioning structure of the mounting seat 19 ensures a secure attachment and fixation between the two.

[0058] 9A-B show another embodiment of the electrosurgical instrument 100 provided by the present invention. In this embodiment, the activation switch 24 is provided as a button switch, at least a portion of which is provided within the second housing cavity 12a of the closure trigger 12. The trigger component 26 is located within the first housing cavity 11c and includes a trigger rod 261 slidably connected to a mounting seat 29 and a reset member 262 mounted on the mounting seat 29 and acting on the trigger rod 261. The trigger rod 261 slides along a second direction on the mounting seat 29 to trigger the activation switch 24 to turn on or off. Here, the second direction may be the same as or different from the first direction. At least a portion of the activation switch 24 is located within the second housing cavity 12a, and when the closure trigger 12 is in the non-activated position, the end of the trigger rod 261 facing the activation switch 24 protrudes from the mounting seat 29 under the action of the reset member 262. When the closure trigger 12 pivots to the activation position, the trigger rod 261 acts on the activation switch 24 against the elastic force of the return piece 262, pressing the activation switch 24 and conducting the activation circuit. When the closure trigger 12 pivots in the direction away from the grip main body 11, the activation switch 24 moves accordingly and moves away from the trigger rod 261, and the activation switch 24 switches to the disconnected state, disconnecting the activation circuit, and the trigger rod 261 slides back to its initial position under the action of the return piece 262.

[0059] The mounting seat 29 is integrally molded on the inner wall surface of the grip main body 11, and is provided with a mounting groove 291 extending in the second direction, and an opening is provided on the side of the mounting seat 29 facing the activation switch 24. The trigger rod 261 includes a slide portion 261c that fits into the mounting groove 291, a distal rod portion 261a that extends distally from the slide portion 261c and passes through the opening, and a proximal rod portion 261b that extends proximally from the slide portion 261c. The return piece 262 may be a compression spring, and is fitted into the proximal rod portion 261b, with one end abutting against the slide portion 261c and the other end abutting against the inner wall of the mounting seat 29.

[0060] 10A-B show another embodiment of an electrosurgical instrument 100 provided by the present invention. In this embodiment, the activation switch 34 is a button switch, and at least a portion of the trigger component 36 is located within the second housing cavity 12a of the closure trigger 12. Specifically, the trigger component 36 includes a trigger rod 361 pivotally connected to a mounting seat 39 and a return member 362 (not shown) attached to the mounting seat 39 and acting on the trigger rod 361. The trigger rod 361 swings in a third direction to trigger the activation switch 34 to turn on or off. Here, the activation switch 34 is located within the second housing cavity 12a of the closure trigger 12, and an abutment portion 312 for cooperating with the trigger component 16 is provided within the first housing cavity 11c of the grip main body 11. When the closure trigger 12 is in the non-activated position, under the action of the return member 362, the trigger rod 361 abuts against the activation switch 34 but does not trigger the activation switch 34, or is in an initial position with a set gap. When the front air closure trigger 12 pivots to the activation position, the first end (proximal end) 361a of the trigger rod 361 abuts against the abutment portion 312, and the second end (distal end) 361b of the front air trigger rod 361 acts on the front air activation switch 34 against the biasing force of the return member 362, pressing the activation switch 34 and conducting the activation circuit. When the closure trigger 12 pivots in the direction away from the grip main body 11, the trigger rod 361 moves together with the closure trigger 12 and away from the abutment portion 312, and under the action of the return member 362, the trigger rod 361 slides again in the direction away from the activation switch 34 and returns to the initial position or non-activation position. The activation switch 34 switches to the disconnected state, and the activation circuit is disconnected.

[0061] Here, the abutment portion 312 in the first housing cavity 11c is formed on the inner wall surface of the first housing cavity 11c, more specifically, the inner wall surface is convex compared to other areas of the first housing cavity 11c, and the surface cooperating with the trigger rod 361 is a flat surface. A pivot or a pivot bearing is provided in the second housing cavity 12a to form the mounting seat 39, and a pivot bearing or a pivot is provided corresponding to the trigger rod 361 and is pivotally connected to the closure trigger 12. The return piece 362 is a spring (twist spring) fitted on the pivot. The side of the trigger rod 361 away from the mounting seat 39 extends to a position facing the pressing portion of the start-up switch 34, and a trigger protrusion 361b is provided on the end face of the trigger rod 361 facing the start-up switch 34, and this trigger protrusion 361b acts on the start-up switch 34 when the trigger rod 361 cooperates with the abutment portion 312, putting it into a pressed state.

[0062] 11A-B show another embodiment of the electrosurgical instrument 100 provided by the present invention, in which the activation switch 44 is provided as a button switch. In this specific embodiment, a trigger component 46 for triggering the activation switch 44 is provided on the surface of the case of the closure trigger 12, and when the closure trigger 12 is pivoted to the activation position, the trigger component 46 triggers the activation switch 44 to a conductive state through operation by the user.

[0063] Specifically, an attachment opening is provided on the surface of the case of the closure trigger 12 on the side away from the grip main body 11, the pressing side of the activation switch 44 faces the attachment opening, and the trigger component 46 includes a sealing lid 461 attached to the attachment opening. The sealing lid 461 has an elastic deformation region that faces the activation switch 44. When the elastic deformation region is triggered and deforms to a set value in a direction approaching the activation switch 44, it switches the state of the activation switch 44.

[0064] To prevent a user from accidentally triggering the trigger component 46 when the closure trigger 12 is in the non-activated position, the trigger force of the elastic deformation region of the sealing lid 461 is set to be greater than the closure pivot force of the closure trigger 12. That is, even if a user triggers the elastic deformation region of the sealing lid 461 when the closure trigger 12 is in the initial position, the closure trigger 12 first pivots in a direction approaching the first position until the closure trigger 12 pivots to the activated position, and the activation switch 44 is in a state of abutting against the abutment portion 412. At this time, the user can further deform the elastic deformation region of the sealing lid 461 to a set value to trigger the activation switch 44 to the conductive state.

[0065] Specifically, the sealing lid 461 is connected to the mounting port side of the closure trigger 12 by engagement, and the area of ​​the outer wall of the closure trigger 12 that is gripped by the user is rubber coated, and the rubber coating layer 12b covers the mating position between the sealing lid 461 and the mounting port, preventing external dust and the like from entering the inside of the closure trigger 12 through the gap between the two.

[0066] 12A-B show another embodiment of an electrosurgical instrument 100 provided by the present invention, in which the activation switch 54 is a contact-type switch and at least a portion of the activation circuit is located on the control circuit board 28. The activation switch 54 includes at least one first contact 54a located in the first housing cavity 11c and at least one second contact 54b located in the second housing cavity 12a. The first contact 54a is electrically connected to the power supply connection 15, and the second contact 54b is electrically connected to the control circuit board 28. When the closure trigger 12 is in the non-activated position, the first contact 54a and the second contact 54b are separated, and the activation circuit is disconnected. When the closure trigger 12 is pivoted to the activated position, the second contact 54b abuts the first contact 54a, and the activation circuit is conductive.

[0067] Specifically, two first contacts 54a connected in parallel to each other are provided in the first housing cavity 11c of the grip main body 11, and correspondingly, two second contacts 54b connected in parallel to each other are provided in the second housing cavity 12a of the closure trigger 12. When the closure trigger 12 pivots to the activation position, the two sets of second contacts 54b connected in parallel cooperate with the first contacts 54a to connect an activation circuit, thereby improving the operational reliability of the activation switch 14.

[0068] 13, the pin-type contacts include a fixed base C1 and a movable pin C slidably connected to the fixed base C1. A compression spring S is provided between the movable pin C and the fixed base C1, which ensures that the first contact 54a and the second contact 54b are electrically connected within a certain range when they come into contact with each other.

[0069] 14A-B show another embodiment of an electrosurgical instrument 100 provided by the present invention, in which the activation switch 64 is a contact-type switch and at least a portion of the activation circuit is located on the control circuit board 38. The activation switch 64 includes at least one first contact 64a located in the first housing cavity 11c and at least one second contact 64b located in the second housing cavity 12a. The first contact 64a is electrically connected to the power supply connection 15 via the control circuit board 38. When the closure trigger 12 is in the non-activated position, the first contact 64a and the second contact 64b are separated, and the activation circuit is disconnected. When the closure trigger 12 is pivoted to the activated position, the second contact 64b abuts the first contact 64a, and the activation circuit is conductive.

[0070] Obviously, the above examples are merely illustrative for clarity and are not limiting of the embodiments. A person skilled in the art can make other different modifications or variations based on the above description. It is not necessary or possible to cover all the embodiments here. Any changes or variations that can be obviously derived from these descriptions still fall within the scope of protection of the present invention.

Claims

1. 1. An electrosurgical instrument comprising: an edge execution component; a handle component for operably supplying driving force and electrosurgical energy to the end execution component; the handle component includes a gripping body and a closure trigger pivotally connected to the gripping body; the gripping body has a first housing cavity, the closure trigger has a second housing cavity, and an activation switch for turning on or off transmission of electrosurgical energy is provided in the first housing cavity and / or the second housing cavity; The electrosurgical instrument wherein when the closure trigger pivots toward the gripping body to reach an activated position, the activation switch is triggered to a conductive state to supply electrosurgical energy to the end effector component.

2. The electrosurgical instrument of claim 1 , wherein at least a portion of the closure trigger is received within a first receiving cavity of the grasping body when the end execution component is in an open state.

3. 2. The electrosurgical instrument according to claim 1, wherein as the closure trigger pivots toward the grasping body, an area over which the closure trigger enters the first housing cavity gradually increases, and as the closure trigger pivots away from the grasping body, an area over which the closure trigger enters the first housing cavity gradually decreases.

4. a power supply connection for electrically connecting to a host that generates electrosurgical energy; and a control circuit board electrically connected to the power supply connection; The electrosurgical instrument of claim 1, wherein an activation circuit is disposed on the control circuit board, and the activation switch operably conducts or disconnects the activation circuit to control output of electrosurgical energy to an end effector component.

5. 2. The electrosurgical instrument according to claim 1, wherein the activation switch is a button switch, and a trigger component for triggering the activation switch is further provided in the first housing cavity and / or the second housing cavity, and when the closure trigger is pivoted to an activation position, the trigger component deviates from an initial state and acts on the activation switch, bringing the activation switch into a conductive state.

6. The electrosurgical instrument of claim 1, wherein the activation switch is disposed within the second housing cavity, the activation switch being operably triggered into a conductive state when the closure trigger is pivoted to an activated position.

7. a trigger component is further provided within the second housing cavity; the trigger component includes a trigger rod and a return member connected to the trigger rod; The trigger rod can be operated to deviate from its initial state and act on the activation switch to bring it into a conductive state, The electrosurgical instrument of claim 6, wherein the return member provides a biasing force that holds the trigger rod in an initial position.

8. 8. The electrosurgical instrument according to claim 7, wherein a mounting seat is provided within the second housing cavity, the trigger rod of the trigger component is slidably provided on the mounting seat, and the trigger rod slides on the mounting seat in a first direction to trigger the activation switch to turn on or off, and the return member is provided on the mounting seat to provide a biasing force to the trigger rod.

9. The electrosurgical instrument according to claim 8, wherein one end of the return member acts on the activation switch and the other end acts on a trigger rod of the trigger component, the activation switch maintaining a conductive state during at least a portion of the pivotal movement of the closure trigger from an activated position to an open position.

10. 8. The electrosurgical instrument according to claim 7, wherein a mounting seat is provided within the second housing cavity, the trigger rod of the trigger component is pivotally provided on the mounting seat, and the trigger rod pivots along a pivot in a third direction at the mounting seat to trigger the activation switch to be conductive or disconnected, and the return member is provided on the mounting seat to provide a biasing force to the trigger rod.

11. 11. The electrosurgical instrument according to claim 6, wherein an abutment portion is provided within the first housing cavity for cooperating with the trigger component, and when the closure trigger is pivoted to an activated position, the abutment portion abuts one end of the trigger rod, causing the trigger rod to act on the activation switch against the biasing force of the return member, thereby turning the activation switch into a conductive state.

12. The electrosurgical instrument according to claim 6 , wherein the activation switch and a control circuit board are further mounted on the mounting seat.

13. The electrosurgical instrument according to claim 6, further comprising a trigger component provided within the second housing cavity, the trigger component being provided on a case surface for gripping by a user of the closure trigger, the trigger component operably conducting the activation switch when the closure trigger is pivoted to an activated position.

14. 14. The electrosurgical instrument according to claim 13, wherein the closure trigger has an attachment port, a pressing side of the activation switch faces the attachment port, the trigger component includes a sealing lid attached to the attachment port, the sealing lid has an elastic deformation region facing the activation switch, and the elastic deformation region of the sealing lid conducts electricity to the activation switch when triggered and deformed in a direction approaching the activation switch to a set position.

15. The electrosurgical instrument of claim 14, wherein the pivoting trigger force of the closure trigger is less than the elastic deformation trigger force of the sealing lid.

16. a trigger component is further provided within the first housing cavity; The trigger component includes a trigger rod slidably connected to a mounting seat, and a return member attached to the mounting seat and acting on the trigger rod; The electrosurgical instrument according to claim 6, wherein the trigger rod slides on the mounting seat in a second direction to trigger the activation switch to turn on or off.

17. The activation switch is a contact switch, The activation switch includes at least one first contact located within the first housing cavity and at least one second contact located within the second housing cavity; the first contact is electrically connected to the power supply connection portion, and the first contact or the second contact is electrically connected to the control circuit board; The electrosurgical instrument of claim 4, wherein when the closure trigger is pivoted to the activated position, the second contact abuts the first contact, conducting the activation circuit.

18. The electrosurgical instrument according to claim 1 , wherein a guide structure is provided between the grip body and the closure trigger, the guide structure guiding the direction of swing of the closure trigger.

19. 2. The electrosurgical instrument of claim 1, wherein the handle component further includes first and second resilient members, the closure trigger pivoting toward the main gripping body against the resilience of the second resilient member to reach a closed position, and the closure trigger pivoting toward the main gripping body against the resilience of the first and second resilient members to reach an activated position.

20. The electrosurgical instrument of claim 19, further comprising an elongate body component defining a longitudinal axis and including an outer tube, a proximal end of the outer tube extending into the grip body.

21. 21. The electrosurgical instrument of claim 20, wherein the closure trigger is operably engaged to a proximal portion of the outer tube via a connection formed at an upper end of the closure trigger and pivotally attached to a grip body.

22. the gripping main body is provided with a locking member at a portion located at a proximal end of the outer tube, the outer tube located within the gripping main body has a proximal spacer, a drive collar, and a retaining ring fitted thereon in this order from the proximal end to the distal end, the retaining ring and the proximal spacer are each fixedly connected to the outer tube, and the drive collar is slidable along the outer tube; a spring spacer at a proximal end of the drive collar; The connecting portion of the closure trigger is fitted to the drive collar, and both ends of the connecting portion of the closure trigger are respectively in contact with the spring spacer and the retaining ring; 22. The electrosurgical instrument according to claim 21, wherein a first resilient member is provided between the spring spacer and the proximal spacer, and a second resilient member is provided between the proximal spacer and the locking member, and wherein a modulus of elasticity of the first resilient member is greater than a modulus of elasticity of the second resilient member.

23. The electrosurgical instrument of claim 1 , wherein the handle component further includes a cutting trigger pivotally connected to the gripping body, the cutting trigger operably controlling a knife actuation member in an end execution component to perform a cutting action.

24. An electrosurgical instrument comprising: a handle component for operably supplying driving force and electrosurgical energy to the end execution component, the handle component including a gripping body and a closure trigger pivotally connected to the gripping body; the gripping body has a first housing cavity, the closure trigger has a second housing cavity, and an activation switch is provided within the second housing cavity for turning on or off transmission of electrosurgical energy; When the closure trigger pivots toward the gripping main body, the area where the closure trigger enters the first receiving cavity gradually increases, and when the closure trigger pivots to an activation position, the activation switch is triggered to a conductive state; When the closure trigger is pivoted in a direction away from the gripping main body, an area where the closure trigger enters the first housing cavity gradually decreases, and when the closure trigger is pivoted to a non-activated position, the activation switch switches to a disconnection state.

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