Electrosurgical instrument and electrosurgical system

Abstract

The utility model provides an electrosurgical instrument and an electrosurgical system. The electrosurgical system comprises an electrosurgical host and an electrosurgical instrument electrically connected to the electrosurgical host; the electrosurgical instrument comprises a shell, a forceps rod assembly installed on the shell and an opening and closing actuating mechanism installed on the shell and used for driving the forceps rod assembly to be opened and closed so as to clamp or release tissue. The electrosurgical instrument further comprises a handle linked switch which is arranged in the shell and used for controlling electrical connection and disconnection of the forceps rod assembly and the electrosurgical main machine, and the opening and closing actuating mechanism can close the handle linked switch when being driven to a preset actuating stage, so that the forceps rod assembly and the electrosurgical main machine are conducted. When the opening and closing actuating mechanism is driven to the preset actuating stage, the handle linkage switch can be closed, so that linkage tissue clamping and tissue coagulation can be realized only by externally driving the opening and closing actuating mechanism, the operation is simple, and the holding is comfortable. The handle linked switch is arranged in the shell, so that the risks of accidental touch, cable winding and the like can be avoided.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, and more specifically, relates to an electrosurgical instrument and an electrosurgical system. Background Technology

[0002] In surgical procedures, the use of surgical energy such as electricity and ultrasound allows for the use of handheld instruments to perform operations such as clamping, coagulation, and detachment of tissues, reducing the need for sutures and hemostatic clips and improving surgical efficiency. In most electrosurgical instruments, different functions such as clamping, coagulation, and detachment are typically achieved independently by a corresponding number of different actuating components. To further improve efficiency and reduce workload, some electrosurgical instruments combine two functions into a single actuating component, thereby reducing the judgment and thought required for selecting the actuating component and the need for finger movement. For example, clamp-coagulation combination instruments have a clamping handle on the instrument housing. The first stroke drives the jaws to open and close to clamp the tissue, and the second stroke drives the activation button to apply surgical energy, causing tissue denaturation and coagulation of blood vessels. Additionally, the housing also has an independent detachment trigger to drive the blade or apply surgical energy to detach the tissue. Users can perform clamping and coagulation operations sequentially and use the detachment function independently. These instruments offer high operational continuity and work efficiency during use. However, since the trigger button and the clamping handle are two separate components, and the trigger button protrudes from the housing, there is a risk of accidental contact and cable entanglement. Utility Model Content

[0003] The purpose of this application is to provide an electrosurgical instrument and an electrosurgical system to solve the technical problem in the prior art where the activation button of the clamping and coagulation combination instrument protrudes from the housing, which is prone to accidental contact and cable entanglement.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: an electrosurgical instrument is provided, including a housing, a forceps assembly mounted on the housing, and an opening and closing actuation mechanism mounted on the housing for driving the forceps assembly to open and close to clamp or release tissue; the electrosurgical instrument further includes a handle linkage switch disposed within the housing for controlling the on / off electrical connection between the forceps assembly and an external electrosurgical host, wherein the opening and closing actuation mechanism can close the handle linkage switch when driven to a preset actuation stage, so that the forceps assembly is connected to the electrosurgical host, and the electrosurgical host outputs electrical energy to the forceps assembly.

[0005] In some embodiments, the handle linkage switch includes at least two conductive elements respectively disposed on the housing and the opening / closing actuation mechanism. When the opening / closing actuation mechanism is driven to a preset actuation stage, at least two of the conductive elements can abut against each other to control the clamp assembly to conduct electricity with the electrosurgical host.

[0006] In some embodiments, at least two of the conductive elements include two first conductive elements disposed on the housing and a second conductive element disposed on the opening and closing actuation mechanism, wherein the second conductive element is capable of abutting against the two first conductive elements respectively to control the connection between the clamp assembly and the electrosurgical host.

[0007] Alternatively, at least two of the conductive elements include a first conductive element disposed in the housing and two second conductive elements disposed in the opening and closing actuation mechanism, wherein the first conductive element is capable of abutting against the two second conductive elements respectively to control the connection between the clamp assembly and the electrosurgical host.

[0008] Alternatively, at least two of the conductive elements include a first conductive element disposed in the housing and a second conductive element disposed in the opening and closing actuation mechanism, wherein the first conductive element and the second conductive element are capable of abutting against each other to control the connection between the clamp assembly and the electrosurgical host.

[0009] In some embodiments, the handle linkage switch includes two third conductive elements and a trigger element, wherein the trigger element can push one of the third conductive elements to move to abut against the other third conductive element to control the forceps assembly to conduct electricity with the electrosurgical host.

[0010] The two third conductive elements are disposed in the housing, and the trigger element is disposed in the opening and closing actuation mechanism;

[0011] Alternatively, two of the third conductive elements are disposed in the opening and closing actuation mechanism, and the trigger element is disposed in the housing.

[0012] In some embodiments, the electrosurgical instrument further includes a first control switch, which is connected in parallel with the handle linkage switch, and the first control switch is used to control the on / off electrical connection between the forceps assembly and the electrosurgical host.

[0013] In some embodiments, the first control switch includes two pressing parts, which are respectively disposed on opposite sides of the housing and at least partially protrude from the housing.

[0014] In some embodiments, the electrosurgical instrument further includes a second control switch, which is connected in series with at least the handle linkage switch and is used to control the functional effectiveness of the handle linkage switch.

[0015] In some embodiments, the opening / closing actuation mechanism includes:

[0016] A trigger, rotatably mounted on the housing;

[0017] A sliding member is slidably disposed in the housing and connected to the clamping rod assembly;

[0018] A transmission component is connected between the trigger and the sliding component.

[0019] The housing is provided with a first clicker, and the trigger has a first clicker actuation element. When the trigger controls the clamping rod assembly to close and clamp, the first clicker actuation element triggers the first clicker to emit a first prompt sound.

[0020] In some embodiments, the housing further includes a second clicker, which, when the trigger activates the handle linkage switch, causes the first clicker actuator to move the second clicker to emit a second cue tone;

[0021] Alternatively, the trigger may also have a second clicker actuation element, which, when the trigger actuates the handle linkage switch, moves the second clicker to produce a second cue tone.

[0022] On the other hand, this application also provides an electrosurgical system, characterized in that it includes an electrosurgical host and the aforementioned electrosurgical instruments electrically connected to the electrosurgical host.

[0023] The beneficial effects of the electrosurgical instrument and system provided in this application are as follows: By setting a handle linkage switch inside the housing, the handle linkage switch is used to control the on / off connection between the forceps assembly and the electrosurgical host. When the opening and closing actuation mechanism is driven to the preset actuation stage, which in this application is the third stage, the handle linkage switch can be closed to connect the forceps assembly and the electrosurgical host. This allows for the simultaneous clamping and coagulation of tissue by only externally driving the opening and closing actuation mechanism, making the overall operation of the electrosurgical instrument simpler, the grip more comfortable, and offering advantages such as simple manufacturing process, small size, and lower cost. In this application, because the handle linkage switch is located inside the housing, the risks of accidental contact and cable entanglement can be avoided. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional structural schematic diagram of the electrosurgical instrument provided in the embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the internal structure of the electrosurgical device provided in the embodiments of this application;

[0027] Figure 3A schematic diagram of the circuit principle of the electrosurgical instrument provided in the embodiments of this application, including a first control switch and a handle linkage switch;

[0028] Figure 4 A schematic diagram of the circuit principle of an electrosurgical instrument including a first control switch and a handle linkage switch, provided in another embodiment of this application;

[0029] Figure 5 A schematic diagram of the open state of the handle linkage switch in an electrosurgical instrument provided in another embodiment of this application;

[0030] Figure 6 A schematic diagram of the closed state of the handle linkage switch in an electrosurgical instrument provided in another embodiment of this application;

[0031] Figure 7 A schematic diagram of the open state of the handle linkage switch in an electrosurgical instrument provided in another embodiment of this application;

[0032] Figure 8 A schematic diagram of the closed state of the handle linkage switch in an electrosurgical instrument provided in another embodiment of this application;

[0033] Figure 9 A schematic diagram of the open state of the handle linkage switch in an electrosurgical instrument provided in another embodiment of this application;

[0034] Figure 10 A schematic diagram of the closed state of the handle linkage switch in an electrosurgical instrument provided in another embodiment of this application;

[0035] Figure 11 A schematic diagram illustrating the principle of the opening and closing actuation mechanism in the electrosurgical device provided in the embodiments of this application;

[0036] Figure 12 A schematic diagram of the integrated structure of the first control switch and the handle linkage switch in the electrosurgical instrument provided in this application embodiment;

[0037] Figure 13 This is a schematic diagram of the electrical connection assembly in an electrosurgical instrument provided in an embodiment of this application;

[0038] Figure 14 This is a schematic diagram of the disconnection actuation mechanism in an electrosurgical device provided in an embodiment of this application.

[0039] The following are the labeling elements in the figure:

[0040] 100. Housing; 110. Guide groove; 200. Opening / closing actuation mechanism; 210. Trigger; 220. Transmission component; 230. Sliding component; 300. Clamping bar assembly; 310. Clamping bar; 320. Clamping arm; 400. Disengagement actuation mechanism; 410. Disengagement handle; 411. Sliding part; 412. Hinge part; 420. Connecting rod; 430. Connecting component; 600. First elastic element; 700. Second elastic element; 810. First clicker; 820. Second clicker; 8 30. First clicker actuation component; 840. Second clicker actuation component; 900. Condensation activation assembly; 910. Handle linkage switch; 911. First conductive component; 912. Second conductive component; 913. Third conductive component; 914. Trigger component; 930. First control switch; 931. Pressing part; 950. Electrical connection assembly; 951. First connecting component; 952. Second connecting component; 960. Second control switch; 990. Flexible circuit board; 2. Electrosurgical unit. Detailed Implementation

[0041] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] As described in the background section, to further improve efficiency and reduce workload, some electrosurgical instruments integrate two functions into a single actuating component, thereby reducing the need for judgment and thought in selecting the actuation mechanism and the manual manipulation of fingers. For example, clamp-coagulation combination instruments have a clamping handle on the instrument housing. The first stroke drives the jaws to open and close to clamp tissue, and the second stroke drives the activation button to apply surgical energy, causing tissue denaturation and blood vessel closure. Additionally, the housing also has a separate disconnect trigger for driving the blade or applying surgical energy to rupture the tissue. During operation, the user can perform clamping and coagulation operations sequentially and use the disconnect function independently. These instruments offer high operational continuity and efficiency. However, because the activation button protrudes from the housing, it is prone to accidental activation and cable entanglement.

[0046] Therefore, this application provides an electrosurgical instrument and an electrosurgical system. By setting a handle linkage switch 910, and the opening and closing actuation mechanism 200 being driven to a preset actuation stage, the handle linkage switch 910 can be closed, so that the clamping rod assembly 300 is electrically connected to the electrosurgical host 2, thereby linking the clamping drive and the coagulation drive. Moreover, the handle linkage switch 910 is located inside the housing 100, which can avoid the risks of accidental contact and cable entanglement of the handle linkage switch 910.

[0047] Please see Figure 1 and Figure 2 The electrosurgical instrument provided in the embodiments of this application will now be described in detail. This electrosurgical instrument is used in conjunction with an external electrosurgical host 2 to achieve the clamping, coagulation, and detachment of tissues.

[0048] The electrosurgical instrument includes a housing 100, a forceps assembly 300 mounted on the housing 100, and an opening and closing actuation mechanism 200 mounted on the housing 100 for driving the forceps assembly 300 to open and close to clamp or release tissue. The electrosurgical instrument also includes a handle linkage switch 910, which is located inside the housing 100 and is used to control the electrical connection between the forceps assembly 300 and the external electrosurgical host 2. When the opening and closing actuation mechanism 200 is driven to a preset actuation stage, it can close the handle linkage switch 910 to make the electrical connection between the forceps assembly 300 and the electrosurgical host 2 conduct, so that the electrosurgical host 2 outputs electrical energy to the forceps assembly 300.

[0049] It should be noted that the opening and closing actuation mechanism 200 will have multiple different actuation stages after being driven by external force. For example, the opening and closing actuation mechanism 200 drives the clamping rod assembly 300 from opening to closing to clamp the tissue (that is, the light clamping stage) in the first actuation stage. The opening and closing actuation mechanism 200 drives the clamping rod assembly 300 from clamping the tissue to clamping the tissue in the second actuation stage. The opening and closing actuation mechanism 200 drives the clamping rod assembly 300 to continue clamping the tissue and trigger the electrosurgical host 2 in the third actuation stage.

[0050] When the opening and closing actuation mechanism 200 is driven to the preset actuation stage, it can close the handle linkage switch 910. Specifically, in the third actuation stage mentioned above, the handle linkage switch 910 is closed so that the forceps assembly 300 is electrically connected to the electrosurgical host 2, and the energy generated by the electrosurgical host 2 can be transmitted to the forceps assembly 300 to coagulate the tissue.

[0051] The electrosurgical instrument provided in this application embodiment features a handle linkage switch 910 located inside the housing 100. This switch controls the electrical connection between the forceps assembly 300 and the electrosurgical host 2. When the opening / closing actuation mechanism 200 is driven to a preset actuation stage (in this application, the third stage), the handle linkage switch 910 closes, ensuring electrical connection between the forceps assembly 300 and the electrosurgical host 2. This allows for the simultaneous clamping and coagulation of tissue with only external driving of the opening / closing actuation mechanism 200. This simplifies the overall operation of the electrosurgical instrument, improves grip comfort, and offers advantages such as simple manufacturing process, small size, and lower cost. Furthermore, the handle linkage switch 910's location inside the housing 100 avoids risks such as accidental contact and cable entanglement.

[0052] In some embodiments, the handle linkage switch 910 includes at least two conductive elements respectively disposed on the housing 100 and the opening and closing actuation mechanism 200. When the opening and closing actuation mechanism 200 is driven to a preset actuation stage, at least two of the conductive elements can abut against each other to control the forceps assembly 300 to conduct to the electrosurgical host 2, so that the electrosurgical host 2 outputs electrical energy to the forceps assembly 300.

[0053] The at least two conductive elements are respectively disposed in the housing 100 and the opening / closing actuation mechanism 200. This means that the number of conductive elements can be two, three, or four, and both the housing 100 and the opening / closing actuation mechanism 200 are each provided with at least one conductive element. When the opening / closing actuation mechanism 200 is driven to a preset actuation stage, two conductive elements or multiple sets of conductive elements can be in contact to control the connection between the clamp assembly 300 and the electrosurgical host 2.

[0054] The distribution and conductivity of each conductive component are illustrated below with examples.

[0055] As an example, please see Figure 2 and Figure 3At least two conductive elements are included: two first conductive elements 911 disposed on the housing 100 and a second conductive element 912 disposed on the opening and closing actuation mechanism 200. The second conductive element 912 can abut against the two first conductive elements 911 respectively to control the forceps assembly 300 to conduct electricity with the electrosurgical host 2. Specifically, the two first conductive elements 911 are respectively connected to the control line and the ground line of the electrosurgical host 2. When the second conductive element 912 is driven by the opening and closing actuation mechanism 200 to conduct electricity with the two first conductive elements 911, the forceps assembly 300 can be controlled to conduct electricity with the electrosurgical host 2.

[0056] As an example, please see Figure 5 and Figure 6 At least two conductive elements are included: a first conductive element 911 disposed on the housing 100 and two second conductive elements 912 disposed on the opening and closing actuation mechanism 200. The first conductive element 911 can abut against the two second conductive elements 912 respectively to control the forceps assembly 300 to conduct electricity with the electrosurgical host 2. Specifically, the two second conductive elements 912 are respectively connected to the control line and the ground line of the electrosurgical host 2. When the two second conductive elements 912 are driven by the opening and closing actuation mechanism 200 to approach the first conductive element 911, the first conductive element 911 conducts electricity with the two second conductive elements 912, thereby controlling the forceps assembly 300 to conduct electricity with the electrosurgical host 2.

[0057] As an example, please see Figure 7 and Figure 8 At least two conductive elements are included: a first conductive element 911 disposed on the housing 100 and a second conductive element 912 disposed on the opening and closing actuation mechanism 200. The first conductive element 911 and the second conductive element 912 can abut against each other to control the connection between the clamp assembly 300 and the electrosurgical host 2. When the second conductive element 912 is driven by the opening and closing actuation mechanism 200 to conduct with the first conductive element 911, the connection between the clamp assembly 300 and the electrosurgical host 2 can be controlled.

[0058] In this embodiment, by providing conductive elements on the opening and closing actuation mechanism 200 and the housing 100 respectively, when the opening and closing actuation mechanism 200 is driven to the preset actuation stage, the electrical conductivity between the conductive elements can be used to control the electrosurgical host 2 to output electrical energy to the clamp assembly 300. The structure is simple and there is no risk of accidental contact.

[0059] Furthermore, in some other embodiments, the handle linkage switch 910 can also be of other types. For example, see [link to relevant documentation]. Figure 9 and Figure 10The handle linkage switch 910 includes two third conductive elements 913 and a trigger element 914. The trigger element 914 can push one of the third conductive elements 913 to abut against the other third conductive element 913 to control the connection between the clamp assembly 300 and the electrosurgical host 2. The two third conductive elements 913 are located in the housing 100, and the trigger element 914 is located in the opening / closing actuation mechanism 200. Specifically, the two third conductive elements 913 are electrically connected to the control line and ground line of the electrosurgical host 2, respectively. The trigger element 914 is a non-conductive element. When the trigger element 914 is driven by the opening / closing actuation mechanism 200 to move one of the third conductive elements 913 to abut against the other third conductive element 913, it can control the connection between the clamp assembly 300 and the electrosurgical host 2. It is understood that in other embodiments of this application, the two third conductive elements 913 may also be located in the opening / closing actuation mechanism 200, and the trigger element 914 may be located in the housing 100; this is not a unique limitation.

[0060] In some embodiments, please refer to Figure 2 The electrosurgical instrument includes a first elastic element 600 and a second elastic element 700. The second preset pressure of the second elastic element 700 is greater than the first preset pressure of the first elastic element 600. In the first actuation stage of the opening and closing actuation mechanism 200, the first elastic element 600 is compressed when the forceps assembly 300 is closed. In the second actuation stage of the switching actuation mechanism, both the first elastic element 600 and the second elastic element 700 are compressed when the forceps assembly 300 clamps the tissue. In the third actuation stage of the opening and closing actuation mechanism 200, the first elastic element 600 and the second elastic element 700 continue to be compressed when the forceps assembly 300 continues to clamp the tissue, and the handle linkage switch 910 closes at the end of the third actuation stage.

[0061] Specifically, in the first actuation stage where the opening and closing actuation mechanism 200 drives the clamping rod assembly 300 to close, the clamping rod assembly 300 has not yet contacted the tissue. The opening and closing actuation mechanism 200 only needs to overcome the elastic pressure of the first elastic element 600. Since the elastic pressure of the first elastic element 600 is relatively small, the gripping force in the first actuation stage is relatively small. In the second actuation stage where the opening and closing actuation mechanism 200 drives the clamping rod assembly 300 to clamp the tissue, the clamping rod assembly 300 begins to contact the tissue, and the second elastic element 700 begins to compress. The opening and closing actuation mechanism 200 needs to overcome the reaction forces of the first elastic element 600, the second elastic element 700, and the tissue. At the moment of transition from the first actuation stage to the second actuation stage, the gripping force of the opening and closing actuation mechanism 200 increases sharply, giving the fingers obvious tactile feedback to indicate to the physician that the tissue has begun to be clamped. In the third actuation stage, when the opening and closing actuation mechanism 200 drives the forceps assembly 300 to continue clamping the tissue, the gripping force increases slowly until the handle linkage switch 910, and the electrosurgical host 2 begins to generate energy.

[0062] In the above embodiments, the cooperation of the first elastic element 600 and the second elastic element 700 can provide different force feedback at different actuation stages of the opening and closing actuation mechanism 200, so that the doctor can identify the stage according to the change in gripping force and reduce the risk of misoperation.

[0063] In some embodiments, please refer to Figure 2 and Figure 11 The opening and closing actuation mechanism 200 includes a trigger 210, a slider 230, and a transmission member 220. The trigger 210 is rotatably disposed on the housing 100 and extends at least partially out of the housing 100. The slider 230 is slidably disposed on the housing 100 and connected to the clamp rod assembly 300. The transmission member 220 is throttle-connected between the trigger 210 and the slider 230. The first elastic member 600 abuts against one of the trigger 210, the slider 230, or the transmission member 220 and the housing 100. The second elastic member 700 abuts against one of the trigger 210, the slider 230, or the transmission member 220 and the housing 100 after the second actuation phase begins.

[0064] Specifically, the trigger 210 can be manually driven so that the trigger 210 drives the slider 230 to slide in the housing 100 through the transmission component 220, and the slider 230 slides to drive the clamping rod assembly 300 to open and close.

[0065] When the first elastic element 600 abuts between the trigger 210 and the housing 100, the first elastic element 600 can be a torsion spring; when the first elastic element 600 abuts between the slider 230 and the housing 100, the first elastic element 600 can be a compression spring or a tension spring; when the first elastic element 600 abuts between the transmission member 220 and the housing 100, the first elastic element 600 can be a tension spring or a torsion spring. It should be noted that the first elastic element 600 always abuts between one of the trigger 210, the slider 230, or the transmission member 220 and the housing 100, so that the first elastic element 600 is in a compressed state in all three actuation stages. It is understood that in other embodiments of this application, the first elastic element 600 can also be connected between the clamping rod assembly 300 and the housing 100.

[0066] When the second elastic element 700 abuts between the trigger 210 and the housing 100, the second elastic element 700 can be a torsion spring; when the second elastic element 700 abuts between the sliding element 230 and the housing 100, the second elastic element 700 can be a compression spring or a tension spring; when the second elastic element 700 abuts between the transmission element 220 and the housing 100, the second elastic element 700 can be a tension spring or a torsion spring. It should be noted that during the first actuation phase, one end of the second elastic element 700 is suspended in the air. For example, one end of the second elastic element 700 is connected to the housing 100, and the other end of the second elastic element 700 only begins to contact the trigger 210, the slider 230, or the transmission element 220 after the second actuation phase begins. Therefore, the second elastic element 700 begins to compress from the second actuation phase. Alternatively, one end of the second elastic element 700 may be connected to the trigger 210, the slider 230, or the transmission element 220, and the other end of the second elastic element 700 may contact the housing 100 and begin to compress from the second actuation phase. It is understood that in other embodiments of this application, the second elastic element 700 may also be connected between the clamping rod assembly 300 and the housing 100.

[0067] As an example, please see Figure 2 The first elastic element 600 abuts against the sliding element 230 and the housing 100, and the second elastic element 700 is connected to the sliding element 230, and the second elastic element 700 abuts against the housing 100 from the second actuation stage. Specifically, a stop can be provided in the housing 100 to abut and compress the second elastic element 700.

[0068] For some specific embodiments, please refer to Figure 2 and Figure 11 The two ends of the transmission member 220 are hinged to the trigger 210 and the slider 230, respectively. The trigger 210, the transmission member 220, and the slider 230 form a crank-slider mechanism, which converts the rotational motion of the trigger 210 into the sliding motion of the slider 230. This mechanism is simple in structure and occupies little space. It is understood that in other embodiments of this application, the transmission member 220 may also be a gear and rack structure or a cam structure; this is not a limiting factor.

[0069] In some embodiments, the housing 100 is provided with a clicker, and the opening and closing actuation mechanism 200 is provided with a clicker actuator. When the opening and closing actuation mechanism 200 is driven to the end of the second actuation stage and / or the end of the third actuation stage, the clicker actuator actuates the clicker.

[0070] Specifically, when the trigger 210 controls the clamping lever assembly 300 to close and clamp, the clicker actuator can move the clicker to prompt the doctor to complete the clamping; or, when the trigger 210 activates the handle linkage switch 910, the clicker actuator can move the clicker to prompt the doctor to start activating energy.

[0071] As an example, please see Figure 2 The housing 100 is provided with two clickers, namely the first clicker 810 and the second clicker 820; the opening and closing actuation mechanism 200 is provided with two clicker actuators, namely the first clicker actuator 830 and the second clicker actuator 840. When the opening and closing actuator 200 is driven to the first actuation stage, the gripping force is relatively small. When the opening and closing actuator 200 is driven to the second actuation stage, the gripping force increases significantly. When the opening and closing actuator 200 is driven to the end of the second actuation stage (that is, when the trigger 210 controls the clamping lever assembly 300 to close and clamp), the first clicker actuator 830 activates the first clicker 810 to emit a first prompt sound to alert the surgeon to complete the clamping. When the opening and closing actuator 200 is driven to the third stage, the gripping force increases slowly. When the opening and closing actuator 200 is driven to the end of the third stage (when the trigger 210 activates the handle linkage switch 910), the second clicker actuator 840 activates the second clicker 820 to emit a second prompt sound to alert the surgeon to begin activating energy. In this way, the surgeon is alerted through force and sound feedback, avoiding misoperation and ensuring the safety of the surgery.

[0072] Optionally, the first clicker actuation member 830 may be provided in the trigger 210, the transmission member 220 or the sliding member 230; the second clicker actuation member 840 may be provided in the trigger 210, the transmission member 220 or the sliding member 230.

[0073] In other embodiments of this application, the housing 100 includes a first clicker 810 and a second clicker 820. The trigger 210 is provided with a first clicker actuation member 830. When the trigger 210 controls the clamping lever assembly 300 to close and clamp, the first clicker actuation member 830 triggers the first clicker 810 to emit a first prompt sound. When the trigger 210 activates the handle linkage switch 910, the first clicker actuation member 830 actuates the second clicker 820 to emit a second prompt sound.

[0074] In some embodiments, please refer to Figure 3 The electrosurgical instrument also includes a first control switch 930, which is connected in parallel with the handle linkage switch 910. The first control switch 930 is used to control the on / off of the electrical connection between the forceps assembly 300 and the electrosurgical host 2.

[0075] Specifically, the electrosurgical instrument also includes a coagulation activation component 900, which includes a handle linkage switch 910 and a first control switch 930. During use, the physician can select the appropriate switch based on actual needs. For example, when clamping and coagulation need to be linked, the first control switch 930 is set to the off state. In this case, different actuation stages of the opening and closing actuation mechanism 200 can be used to clamp and coagulate the tissue separately. When clamping and coagulation need to be operated independently, the first control switch 930 can be set to the on state. In this case, the opening and closing actuation mechanism 200 can drive the clamping rod assembly 300 to clamp the tissue. Alternatively, the on state of the first control switch 930 can control the electrosurgical host 2 to electrically connect with the clamping rod assembly 300 to achieve independent coagulation without linkage.

[0076] In some embodiments, please refer to Figure 1 The first control switch 930 includes two pressing parts 931, which are respectively disposed on opposite sides of the housing 100 and at least partially protrude from the housing 100. When a closure action needs to be performed individually, the pressing part 931 can be pressed on one or both sides of the housing 100 to control the electrical connection between the electrosurgical main unit 2 and the forceps assembly 300. The arrangement of the two pressing parts 931 facilitates the user to perform pressing operations on different sides of the housing 100.

[0077] Specifically, the first control switch 930 may include two control keys, which are connected in parallel and can respectively control the on / off electrical connection between the electrosurgical host 2 and the forceps assembly 300. Two pressing parts 931 are respectively connected to the two control keys. Alternatively, the first control switch 930 may also include one control key, with two pressing parts 931 respectively connected to the control key to achieve bidirectional control.

[0078] In some embodiments, please refer to Figure 3 The electrosurgical instrument also includes a second control switch 960, which is connected in series with at least the handle linkage switch 910 and is used to control the functional effectiveness of the handle linkage switch 910. Specifically, when the second control switch 960 is on, the handle linkage switch 910 can control the electrical connection between the electrosurgical host 2 and the forceps assembly 300; when the second control switch 960 is off, the handle linkage switch 910 cannot control the electrical connection between the electrosurgical host 2 and the forceps assembly 300. Regardless of the actuation stage of the opening and closing actuation mechanism 200, the electrosurgical host 2 will not coagulate the tissue. At this time, the electrosurgical instrument can be used as a pure clamp. The operator can hold the opening and closing actuation mechanism 200 all the way to drag the tissue without accidentally activating the electrosurgical host 2, thus ensuring operational safety.

[0079] In some embodiments, please refer to Figure 3The second control switch 960 is located in the main circuit of the control loop of the electrosurgical unit 2. The handle linkage switch 910 and the first control switch 930 are connected in parallel, and then connected in series with the second control switch 960. When the second control switch 960 is on, the first control switch 930 and the handle linkage switch 910 are active; when the second control switch 960 is off, the first control switch 930 and the handle linkage switch 910 are inactive.

[0080] In other embodiments of this application, please refer to Figure 4 The second control switch 960 is connected in series with the handle linkage switch 910, and then connected in parallel with the second control switch 960. When the second control switch 960 is on, the first control switch 930 and the handle linkage switch 910 are active; when the second control switch 960 is off, the handle linkage switch 910 is inactive, but the first control switch 930 is active.

[0081] In some embodiments, please refer to Figure 12 The first control switch 930 and the handle linkage switch 910 can be integrated together via a flexible circuit board 990 and installed in the same position inside the housing 100, which facilitates the assembly and installation of the structure.

[0082] In some embodiments, please refer to Figure 1 and Figure 13 The coagulation activation assembly 900 also includes an electrical connection assembly 950. The electrical connection assembly 950 includes a first connecting part 951 disposed on the housing 100 and a second connecting part 952 disposed on the forceps assembly 300. The first connecting part 951 is arc-shaped and the second connecting part 952 is ring-shaped. During the rotation of the forceps assembly 300, the first connecting part 951 and the second connecting part 952 always maintain contact and conduction, so that the electrical connection between the forceps assembly 300 and the electrosurgical host 2 is not disturbed by the rotational movement of the forceps assembly 300. Specifically, there are two first connecting parts 951 and two second connecting parts 952, and each first connecting part 951 is in contact with one second connecting part 952. The two first connecting parts 951 are respectively connected to the power line and the ground line of the electrosurgical host 2.

[0083] In some embodiments, please refer to Figure 1 and Figure 14 The clamping bar assembly 300 includes a clamping bar 310 and two clamping arms 320. The clamping bar 310 is connected to the opening and closing actuation mechanism 200. The two clamping arms 320 are arranged opposite to each other. The opening and closing actuation mechanism 200 controls the opening and closing of the two clamping arms 320 through the clamping bar 310.

[0084] In some embodiments, please refer to Figure 14The electrosurgical instrument also includes a severing actuation mechanism 400 and a cutting blade (not shown). The severing actuation mechanism 400 is mounted in the housing 100 and is used to drive the cutting blade to extend between the two clamping arms 320 to sever tissue. Specifically, the severing actuation mechanism 400 includes a severing handle 410, a connecting rod 420, and a connecting member 430. The housing 100 is provided with a guide groove 110, which is inclined relative to the axial direction of the clamping rod 310. This inclination is designed to make the movement direction of the severing handle 410 more consistent with the normal bending direction of the finger when the index finger presses the severing handle 410, thereby improving the comfort of operation. The sliding part 411 of the severing handle 410 is slidably disposed in the guide groove 110. The hinge part 412 of the severing handle 410 is hinged to the connecting rod 420. The connecting rod 420 is hinged to the connecting member 430. The connecting member 430 is slidably disposed in the housing 100 and connected to the cutting blade. Pushing the disconnect handle 410 causes it to slide in the guide groove 110 while rotating around the sliding part 411, thereby driving the transmission member 220 to rotate. The transmission member 220 then drives the connecting member 430 to slide, pushing the clamp bar 310 cutter forward. The hinge part 412 and the guide groove 110 form a cam mechanism. This embodiment uses a combination of a crank-slider mechanism and a cam mechanism to convert the linear motion of the disconnect handle 410 into the linear motion of the cutter, thus occupying a smaller volume space.

[0085] Optionally, the guide groove 110 is inclined at 10 to 30 degrees relative to the axial direction of the clamp 310.

[0086] On the other hand, this application also provides an electrosurgical system, including an electrosurgical host and electrosurgical instruments electrically connected to the electrosurgical host. The electrosurgical system provided in this application, through the configuration of the aforementioned electrosurgical instruments, reduces the difficulty of surgical operation and lowers the risk of misoperation.

[0087] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electrosurgical instrument, characterized by, The electric surgical instrument comprises a housing (100), a jaw lever assembly (300) mounted on the housing (100), and an opening and closing actuating mechanism (200) mounted on the housing (100) and used for driving the jaw lever assembly (300) to open and close to clamp or release tissue; the electric surgical instrument further comprises a handle linkage switch (910) arranged in the housing (100) and used for controlling electrical connection and disconnection of the jaw lever assembly (300) and an external electric surgical host (2); when the opening and closing actuating mechanism (200) is driven to a preset actuating stage, the handle linkage switch (910) can be closed to enable electrical connection of the jaw lever assembly (300) and the electric surgical host (2), so that the electric surgical host (2) outputs electric energy to the jaw lever assembly (300).

2. An electrosurgical instrument according to claim 1, wherein, The handle linkage switch (910) comprises at least two conductive parts arranged in the housing (100) and the opening and closing actuating mechanism (200) respectively; when the opening and closing actuating mechanism (200) is driven to a preset actuating stage, at least two of the conductive parts can abut against each other to control electrical connection of the jaw lever assembly (300) and the electric surgical host (2).

3. An electrosurgical instrument according to claim 2, wherein, The at least two conductive parts comprise two first conductive parts (911) arranged in the housing (100) and one second conductive part (912) arranged in the opening and closing actuating mechanism (200); the second conductive part (912) can abut against the two first conductive parts (911) respectively to control electrical connection of the jaw lever assembly (300) and the electric surgical host (2); Alternatively, the at least two conductive parts comprise one first conductive part (911) arranged in the housing (100) and two second conductive parts (912) arranged in the opening and closing actuating mechanism (200); the first conductive part (911) can abut against the two second conductive parts (912) respectively to control electrical connection of the jaw lever assembly (300) and the electric surgical host (2); Alternatively, the at least two conductive parts comprise one first conductive part (911) arranged in the housing (100) and one second conductive part (912) arranged in the opening and closing actuating mechanism (200); the first conductive part (911) and the second conductive part (912) can abut against each other to control electrical connection of the jaw lever assembly (300) and the electric surgical host (2).

4. The electrosurgical instrument of claim 1, wherein, The handle linkage switch (910) comprises two third conductive parts (913) and a trigger part (914); the trigger part (914) can push one of the third conductive parts (913) to move to abut against the other third conductive part (913) to control electrical connection of the jaw lever assembly (300) and the electric surgical host (2); The two third conductive parts (913) are arranged in the housing (100), and the trigger part (914) is arranged in the opening and closing actuating mechanism (200); Alternatively, the two third conductive parts (913) are arranged in the opening and closing actuating mechanism (200), and the trigger part (914) is arranged in the housing (100).

5. An electrosurgical instrument according to any one of claims 1 to 4, wherein, The electrosurgical apparatus further comprises a first control switch (930) connected in parallel with the handle linkage switch (910), and used for controlling the electrical connection between the forceps rod assembly (300) and the electrosurgical main machine (2).

6. An electrosurgical instrument according to claim 5, wherein the first and second electrodes are arranged to be electrically connected to the first and second conductors, respectively, by a plurality of conductive elements. The first control switch (930) comprises two pressing portions (931) respectively arranged on opposite sides of the shell (100) and at least partially protruding from the shell (100).

7. The electrosurgical instrument of claim 5, wherein the first and second electrodes are configured to be electrically coupled to a radio frequency (RF) generator. The electrosurgical apparatus further comprises a second control switch (960) connected in series with at least the handle linkage switch (910) and used for controlling the functional availability of the handle linkage switch (910).

8. An electrosurgical instrument according to any one of claims 1 to 4, wherein, The opening and closing actuating mechanism (200) comprises: a trigger (210) rotatably arranged in the shell (100); a sliding member (230) slidably arranged in the shell (100) and connected with the forceps rod assembly (300); a transmission member (220) transmissionally connected between the trigger (210) and the sliding member (230); The shell (100) is provided with a first resonant piece (810), and the trigger (210) has a first resonant piece actuator (830), when the trigger (210) controls the forceps rod assembly (300) to close and clamp, the first resonant piece actuator (830) triggers the first resonant piece (810) to emit a first prompt sound.

9. An electrosurgical instrument according to claim 8, wherein the distal end of the elongate body is configured to be inserted into a patient's body. The shell (100) further comprises a second resonant piece (820), when the trigger (210) activates the handle linkage switch (910), the first resonant piece actuator (830) actuates the second resonant piece (820) to emit a second prompt sound. Alternatively, the trigger (210) further has a second resonant piece actuator (840), when the trigger (210) activates the handle linkage switch (910), the second resonant piece actuator (840) actuates the second resonant piece (820) to emit a second prompt sound.

10. An electrosurgical system, characterized by, The electrosurgical apparatus further comprises a second control switch (960) connected in series with at least the handle linkage switch (910) and used for controlling the functional availability of the handle linkage switch (910).

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