Activation button and high frequency surgical electrode

Abstract

The application relates to an activation button and a high-frequency surgical electrode, and is applied to the field of electrosurgical instruments. The activation button comprises a shell, a control module and a button body, the shell is provided with a through hole, the control module is arranged in the shell, the button body is arranged in the through hole, the side wall of the button body is matched with the inner wall of the through hole, the button body is configured to be elastically deformed when being pressed, the button body is partially arranged in the shell, the button body is provided with an accommodating cavity, and the control module is sealingly arranged in the accommodating cavity; the button body is partially exposed to the shell and can trigger the control module through elastic deformation when being pressed. The application seals the control module in the elastic button body, converts the gap interface prone to water into a closed whole, cuts off the liquid infiltration path, and solves the problem that liquid infiltration into the button body leads to circuit short circuit failure during surgery.

Description

Technical Field

[0001] This application relates to the field of electrosurgical instruments, and more particularly to an activation button and a high-frequency surgical electrode. Background Technology

[0002] The activation button of a high-frequency surgical electrode is a human-machine interface component in electrosurgical instruments, usually located on the instrument handle. The main function of the activation button is to be triggered by the surgeon by pulling the forceps trigger or other means to connect or disconnect the control circuit that supplies high-frequency current to the surgical electrode (such as the forceps head).

[0003] In related technologies, the activation buttons of commonly available high-frequency surgical electrodes often employ a split mechanical structure, typically assembled from independent plastic buttons, return springs, and microswitches. In this design, a necessary assembly gap exists between the plastic button and the handle housing to allow for its pressing stroke; the return spring is responsible for resetting the button after the pressing action is completed.

[0004] However, during surgery, conductive media such as irrigation fluid, blood, or tissue fluid may enter the housing through the gap between the activation button and the housing, which can easily cause damage to electronic components and abnormal instrument function. Utility Model Content

[0005] Therefore, it is necessary to provide an activation button and a high-frequency surgical electrode to address the problems of poor sealing and easy leakage damage to the internal circuit caused by the split structure of the aforementioned activation button.

[0006] Firstly, this application provides an activation button, employing the following technical solution:

[0007] An activation button is provided for connecting or disconnecting a control circuit that supplies high-frequency current to a surgical electrode. The activation button includes a housing, a control module, and a button body. The housing has a through hole. The control module is disposed within the housing. The button body passes through the through hole, and the sidewall of the button body is adapted to fit the inner wall of the through hole. The button body is configured to elastically deform when pressed. The button body portion is disposed within the housing, and a receiving cavity is formed within the button body located within the housing. The control module is sealed within the receiving cavity. The button body portion is exposed outside the housing and can trigger the control module through its own elastic deformation when pressed.

[0008] In one embodiment, the button body includes a trigger portion, a pressing portion, and a connecting portion. The trigger portion is disposed within the housing, and the receiving cavity is formed within the trigger portion. The pressing portion is disposed outside the housing. The connecting portion is integrally formed between the trigger portion and the pressing portion.

[0009] In one embodiment, the pressing part and the connecting part are constructed as solid structures, and the triggering part is constructed as a hollow structure to form the receiving cavity.

[0010] In one embodiment, the connecting portion passes through the through hole, and the sidewall of the connecting portion is adapted to fit the inner wall of the through hole.

[0011] In one embodiment, the housing includes a first split housing and a second split housing that can be connected to each other. The first split housing has a first notch, and the second split housing has a second notch. The first notch and the second notch are configured to correspond to form the through hole.

[0012] In one embodiment, the button body is configured to integrally form the control module by injection molding or glue injection process; or, at least one side of the trigger portion is provided with an opening communicating with the receiving cavity, and the control module can be embedded from the opening and encapsulated in the receiving cavity.

[0013] In one embodiment, the button body is made of a flexible insulating material.

[0014] In one embodiment, the control module includes a circuit board and a button disposed on the circuit board, wherein pressing the button triggers the button to connect or disconnect the control circuit.

[0015] Secondly, this application provides a high-frequency surgical electrode, which adopts the following technical solution:

[0016] A high-frequency surgical electrode includes a handle and the aforementioned activation button, the activation button being mounted on the handle.

[0017] In one embodiment, the high-frequency surgical electrode further includes a connector, and the housing of the activation button is fixed to the handle by means of the connector.

[0018] The aforementioned activation button, by sealing the control module within a flexible button body, transforms the easily water-bearing gap interface into a sealed whole, cutting off the path of liquid seepage, thereby solving the problem of liquid seeping into the button during surgery and causing short circuit failure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the activation button in one embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the assembly of the activation button in one embodiment of this application.

[0021] Figure 3This is a cross-sectional view of the activation button in one embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the button body in one embodiment of this application.

[0023] Figure 5 This is a partial schematic diagram of a high-frequency surgical electrode in one embodiment of this application.

[0024] Attached image annotations:

[0025] 1. Housing; 11. First split housing; 111. First notch; 12. Second split housing; 121. Second notch; 13. Through hole; 2. Button body; 21. Trigger part; 211. Opening; 212. Receiving cavity; 22. Connecting part; 23. Pressing part; 3. Control module; 31. Circuit board; 32. Button; 4. Connector; 5. Pliers trigger; 6. Handle; F1. Axial; F2. Radial. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, if a description such as "above" or "below" the second feature appears, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0031] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] If an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] In the field of electrosurgery, high-frequency surgical electrodes are a crucial instrument, and their operational reliability and safety directly affect the success of the surgery and the safety of the patient. High-frequency surgical electrodes typically use an activation button on the handle to control the on / off switching of high-frequency current, thereby achieving tissue cutting or coagulation.

[0034] As described in the background section, activation buttons in related technologies are typically constructed as separate mechanical structures, usually consisting of a separate plastic button, a metal spring for providing reset force, and a micro switch. A certain assembly gap is necessary between the plastic button and the handle housing to ensure smooth pressing. This assembly gap, along with the tiny gaps at the connections between the individual components, creates a pathway for liquid to seep in.

[0035] In surgical settings, especially when using irrigation solutions or handling highly vascularized tissues, conductive media such as blood, tissue fluid, or irrigation solutions can easily seep into the instruments along this pathway. This seepage can not only cause short circuits, corrosion, or component rust on internal printed circuit boards, leading to instrument malfunction, but more seriously, it can cause unexpected interruptions or abnormalities in energy output, posing certain safety risks.

[0036] To address the deficiencies and shortcomings of the existing technology, this application proposes an activation button and a high-frequency surgical electrode. The following will be discussed in conjunction with the appendix. Figure 1-5 The embodiments of this application will be described in further detail.

[0037] See Figure 1 , Figure 2 and Figure 5 , Figure 1 This paper shows an overall schematic diagram of the activation button in one embodiment of the present application. Figure 2 This illustration shows an assembly diagram of the activation button in one embodiment of the present application. Figure 5 A partial schematic diagram of a high-frequency surgical electrode in one embodiment of this application is shown.

[0038] One embodiment of this application provides an activation button, specifically an activation button mounted on the handle 6 of a high-frequency surgical electrode, used to connect or disconnect the control circuit for supplying high-frequency current to the surgical electrode. The activation button includes a housing 1, a control module 3 mounted on the housing 1, and a button body 2. During surgery, the operator can trigger the control module 3 by pressing the button body 2 to control the on / off state of the control circuit.

[0039] The housing 1 provides support and protection for its internal components and enables a reliable connection with the high-frequency surgical electrode handle 6. The housing 1 includes a first split housing 11 and a second split housing 12 that can be interconnected. This split structure design facilitates the assembly and maintenance of the internal components.

[0040] In this embodiment, a first notch 111 is provided on the first split shell 11 at the edge of the docking position with the second split shell 12, and a second notch 121 is provided on the second split shell 12 at the edge of the docking position with the first split shell 11. When the first split shell 11 and the second split shell 12 are fixedly connected by screws, buckles, magnets, etc., the first notch 111 and the second notch 121 will be combined to form a complete through hole 13. The through hole 13 plays a positioning and guiding role for the button body 2 in the subsequent assembly process.

[0041] Furthermore, to ensure the airtightness of the housing 1, the side wall of the button body 2 and the inner wall of the through hole 13 are designed to fit together. Specifically, a sealing ring can be used to achieve local sealing, but this application does not limit this.

[0042] In some other embodiments, the shape of the housing 1 can be adjusted according to the ergonomic design of the handle 6, and is not limited to a regular geometric shape. The shape of the through hole 13 can also be adapted to the cross-sectional shape of the connecting part 22, such as elliptical, square, etc., as long as it can achieve the guiding and limiting functions.

[0043] Continue reading Figure 2 As shown, the control module 3 is the electronic control core of the activation button and is encapsulated inside the housing 1. The control module 3 includes a circuit board 31 and a button 32 mounted on the circuit board 31. The circuit board 31 integrates electronic components for processing switching signals and communicating with the high-frequency energy platform via cables. The button 32 includes, but is not limited to, a surface-mount micro switch or a tactile switch. When triggered, the button 32 can change the on / off state of the circuit; that is, the button 32 can control the switching of the aforementioned control circuit.

[0044] In some other embodiments, the circuit board 31 of the control module 3 can be designed as a rigid board or a flexible circuit board 31 according to actual needs, so as to adapt to different spatial layout requirements.

[0045] Specifically, the button body 2 is constructed as a single piece using an elastic insulating material, which can be molded in one step using a mold. This single-piece design fundamentally eliminates the interface gaps that inevitably exist in the assembly of multiple parts. In this embodiment, the button body 2 is partially disposed inside the housing 1 and partially exposed outside the housing 1, so that the operator can effectively trigger the button 32 from the outside.

[0046] Combination Figure 3 and Figure 4 As shown, Figure 3 A cross-sectional schematic diagram of the activation button in one embodiment of this application is shown. Figure 4 A schematic diagram of the button body 2 in one embodiment of this application is shown.

[0047] In some embodiments, the button body 2 includes a trigger portion 21 disposed within the housing 1, a pressing portion 23 disposed outside the housing 1, and a connecting portion 22 connecting the trigger portion 21 and the pressing portion 23. The trigger portion 21 is constructed as a hollow structure and forms a receiving cavity 212 therein. The control module 3, particularly the circuit board 31 and button 32 of the control module 3, is sealed within the receiving cavity 212. This enclosed design completely isolates the control module 3 from the external environment with elastic insulating material, thereby preventing the infiltration of external liquids and improving the operational reliability and safety of the activated button.

[0048] In this embodiment, the elastic insulating material includes, but is not limited to, any one of rubber or silicone; any polymer material with good insulation, elasticity, durability, and safety and non-toxicity is suitable. The use of the elastic insulating material ensures that the trigger part 21 maintains effective sealing and insulation of the control module 3 at all times, guaranteeing the normal operation of the high-frequency surgical electrode.

[0049] Furthermore, the pressing part 23 and the connecting part 22 are typically constructed as solid structures to ensure that the button body 2 has sufficient support strength and pressure transmission efficiency. The trigger part 21 is constructed as a hollow thin-walled structure, which easily produces the expected elastic deformation under pressure, thereby ensuring that the trigger part 21 always deforms first after the button body 2 is pressed.

[0050] In some embodiments, the button body 2 is constructed to integrally encapsulate the control module 3 by injection molding or glue injection. When manufacturing the button body 2 using this process, the control module 3 is first pre-placed in the cavity of the mold, and then liquid silicone or rubber material is injected. After it solidifies, the control module 3 is encapsulated in the receiving cavity 212 of the button body 2, forming a seamless whole. This effectively prevents conductive media such as irrigation fluid, blood, or tissue fluid from seeping into the button body 2 and eroding the control module 3 during surgery, thereby improving the operational reliability and safety of the high-frequency surgical electrode.

[0051] In some other embodiments, at least one side of the trigger portion 21 is provided with an opening 211 communicating with the receiving cavity 212. Figure 3 and Figure 4 As shown in the example, the trigger part 21 has an opening 211 on each of its upper and lower sides, which communicates with the receiving cavity 212. During assembly, the control module 3 can be inserted into the receiving cavity 212 through the opening 211, thereby encapsulating the control module 3 within the trigger part 21. Furthermore, after the insertion is completed, the opening 211 can be sealed using biocompatible adhesive or ultrasonic welding to achieve a fully enclosed installation of the control module 3, further improving the waterproofness of the button body 2.

[0052] It is understood that both methods shown in the above embodiments can achieve reliable sealing, with the former being more efficient and consistent in mass production, while the latter provides convenience for maintenance and replacement.

[0053] Continue reading Figure 3 and Figure 4As shown, in some embodiments, the button body 2 is arranged in an "I" shape. The trigger portion 21 and the pressing portion 23 are formed at both ends of the "I" shape, while the connecting portion 22 is formed in the middle of the "I" shape. This structural design is symmetrical and stable, and the overall force distribution is reasonable. The connecting portion 22 in the middle, in conjunction with the through hole 13 of the housing 1, effectively restricts the radial position of the button body 2.

[0054] Furthermore, the connecting part 22 passes through the through hole 13 formed by the first split shell 11 and the second split shell 12. The through hole 13 not only ensures that the button body 2 undergoes elastic deformation along the predetermined path along the axial direction F1 during the pressing process, preventing swaying, but the tight fit between the inner wall of the through hole 13 and the outer wall of the connecting part 22 also constitutes a sealing barrier, which can further prevent liquid from entering the interior of the shell 1.

[0055] During actual surgery, when the operator needs to activate high-frequency energy, a pressing force is applied to the pressing part 23 exposed on the housing 1. The pressing force is transmitted to the trigger part 21 inside the housing 1 through the solid connecting part 22. Since the trigger part 21 is an elastic hollow structure and contains the control module 3, under pressure, the wall of the trigger part 21 will undergo elastic deformation toward the control module 3.

[0056] When the deformation reaches a certain level, the inner wall of the trigger part 21 will directly contact and trigger the button 32 on the control module 3, thereby connecting the control circuit and outputting high-frequency energy. Once the pressure is released, the trigger part 21, thanks to the inherent shape memory characteristics of the elastic insulating material it uses, will automatically return to its original shape, thereby relieving the pressure on the button 32 and disconnecting the control circuit.

[0057] The entire process requires no additional return spring, has a simple structure, reliable operation, and because the entire on / off action is completed in a sealed environment, it can effectively prevent the risk of liquid seepage due to the pressing operation.

[0058] Combination Figures 1 to 5 As shown, in some embodiments, this application also provides a high-frequency surgical electrode, specifically a high-frequency surgical electrode that includes the activation button shown in any of the above embodiments.

[0059] The high-frequency surgical electrode includes a handle 6 and an activation button mounted on the handle 6. The housing 1 of the activation button is fixed to the mounting position (not shown) of the handle 6 by a connector 4 such as a screw. Typically, the mounting position corresponds to the movement trajectory of the forceps trigger 5 of the handle 6, so that when the forceps trigger 5 is pulled to close the forceps and grasp the tissue, the forceps trigger 5 can simultaneously press the pressing part 23 of the activation button, realizing a single-handed continuous operation—that is, clamping and energy activation are completed simultaneously.

[0060] This integrated design enhances the reliability and safety of the high-frequency surgical electrode in complex and slippery surgical environments. Other internal structures of the handle 6, such as the transmission mechanism for driving the opening and closing of the forceps head and the movement of the blade, can be designed with reference to well-known technologies in the art or prior patents of the applicant, and are not the focus of this embodiment, so they will not be described in detail here.

[0061] It is understood that for electrodes that are used solely for electrocoagulation without requiring a cutting function, the handle 6 may not have a blade drive mechanism, but the activation button of this application is still applicable. In some other embodiments, the activation button can also be set independently of the pliers trigger 5 and can be pressed directly by another finger of the operator; this situation also falls within the protection scope of this application.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An activation button for switching on or off a control circuit that supplies high-frequency current to a surgical electrode, characterized in that, The activation button includes: The casing has through holes; The control module is located within the housing; and A button body is inserted into the through hole, and the side wall of the button body is adapted to fit the inner wall of the through hole. The button body is configured to undergo elastic deformation when pressed. The button body is disposed within the housing, and a receiving cavity is formed within the button body located within the housing. The control module is sealed within the receiving cavity. The button body is exposed outside the housing and can trigger the control module through its elastic deformation when pressed.

2. The activation button according to claim 1, characterized in that, The button body includes: A trigger portion is disposed within the housing, and the receiving cavity is formed within the trigger portion; A pressing part is provided on the outside of the housing; and The connecting part is integrally formed between the trigger part and the pressing part.

3. The activation button according to claim 2, characterized in that, Both the pressing part and the connecting part are constructed as solid structures, and the triggering part is constructed as a hollow structure to form the receiving cavity.

4. The activation button according to claim 2, characterized in that, The connecting part is inserted through the through hole, and the sidewall of the connecting part is adapted to fit the inner wall of the through hole.

5. The activation button according to claim 4, characterized in that, The housing includes a first split housing and a second split housing that can be connected to each other. The first split housing has a first notch, and the second split housing has a second notch. The first notch and the second notch are configured to form the through hole.

6. The activation button according to any one of claims 2-5, characterized in that, The button body is constructed by integrally molding the control module using injection molding or glue injection processes; or... At least one side of the trigger portion has an opening communicating with the receiving cavity, and the control module can be embedded from the opening and encapsulated within the receiving cavity.

7. The activation button according to any one of claims 1-5, characterized in that, The button body is made of elastic insulating material.

8. The activation button according to any one of claims 1-5, characterized in that, The control module includes a circuit board and buttons on the circuit board. When the button body is pressed, it can trigger the button to connect or disconnect the control circuit.

9. A high-frequency surgical electrode, characterized in that, It includes a handle and an activation button as described in any one of claims 1-8, the activation button being mounted on the handle.

10. The high-frequency surgical electrode according to claim 9, characterized in that, The high-frequency surgical electrode also includes a connector, and the housing is fixed to the handle via the connector.

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