Switch closing device for high-frequency electrotome

Abstract

This utility model discloses a switch closing device for a high-frequency electrosurgical unit, including an instrument handle (1), a switch body (3), and a trigger component (2). The switch body (3) is fixed inside the instrument handle (1). The trigger component (2) is movably disposed inside the instrument handle (1). When the trigger (4) of the high-frequency electrosurgical unit is closed, the trigger (4) drives the trigger component (2) and the switch body (3) to abut against each other, so that the switch body (3) is in the open state. In the high-frequency electrosurgical unit disclosed in this utility model, when the trigger (4) is closed, it drives the trigger component (2) and the switch body (3) to abut against each other, so that the switch body (3) is always in the open state. In this way, the switch body (3) will always send an electrical signal to the energy triggering structure, so that the energy triggering structure will always be in the firing state, thereby ensuring the continuous output of energy.

Description

Technical Field

[0001] This utility model relates to the field of high-frequency electrosurgical technology, and in particular to a switch closing device for high-frequency electrosurgical. Background Technology

[0002] Publication number CN116725628A discloses a dual-trigger, contact-fitting laparoscopic surgical instrument. In this instrument, the housing has a handle. A first jaw tube connects to a fixed jaw; a second jaw tube connects to a movable jaw. The closing trigger is hinged to the housing. Rotation between the release and closed positions drives the second jaw tube to move between the front and rear ends of the jaws, thereby opening or closing the jaws formed by the fixed and movable jaws. A cutting transmission component connects to a cutting blade to drive its back-and-forth movement. The cutting trigger is hinged to the housing. Rotation between the cutting and avoidance positions drives the cutting transmission component to move between the cutting front and rear ends. The cutting trigger in the avoidance position engages with the closing trigger in the release position.

[0003] In existing technologies, slight wobbling is prone to occur after the trigger is closed. This wobbling directly affects the energy transmission triggering structure of the high-frequency electrosurgical unit, causing intermittent interruptions in the energy signal transmission path, manifesting as a "discontinuous" interruption of the electrical signal. Since the tissue coagulation function of a high-frequency electrosurgical unit relies on a stable energy output, the interruption of the electrical signal will cause intermittent failure of tissue coagulation—specifically, the appearance of localized uncoagulated "breakpoints" in the coagulation area. From a surgical perspective, such breakpoints not only prolong surgical operation time but may also increase the risk of intraoperative bleeding, ultimately significantly affecting the integrity and reliability of tissue coagulation, posing a potential threat to surgical outcomes and patient safety. Utility Model Content

[0004] This utility model specifically provides a switch closing device for a high-frequency electrosurgical unit.

[0005] The switch closing device for a high-frequency electrosurgical unit provided by this utility model includes an instrument handle (1), a switch body (3), and a trigger component (2); the switch body (3) is fixed inside the instrument handle (1); the trigger component (2) is movably disposed inside the instrument handle (1); when the trigger (4) of the high-frequency electrosurgical unit is closed, the trigger (4) drives the trigger component (2) and the switch body (3) to abut against each other, so that the switch body (3) is in the open state.

[0006] Preferably, the triggering component (2) includes a switch holder (21); the instrument handle (1) is provided with a slide groove (12) and a switch mounting base (13); the switch mounting base (13) is fixed inside the housing and close to the lower end of the slide groove (12); the switch holder (21) is slidably disposed in the slide groove (12); the top of the switch holder (21) is provided with an inclined surface (212); the switch body (3) is fixed on the switch mounting base (13) and faces the slide groove (12).

[0007] Preferably, the trigger assembly (2) further includes a switch button (24) and a first spring (23); the switch frame (21) is provided with a first cavity (214) and a second cavity (215); the first cavity (214) and the second cavity (215) are connected; the switch button (24) is composed of a first column (243), a second column (242) and a third column (241) connected in sequence, and is an integral structure; the second column (242) is located in the first cavity (214) 14) Inside; the first column (243) extends from the first cavity (214) into the second cavity (215); the third column (241) extends from the bottom of the switch frame (21) into the instrument handle (1); the height of the first cavity (214) is greater than the height of the second column (242); one end of the first spring (23) abuts against the upper side wall of the second cavity (215), and the other end abuts against the upper surface of the second column (242).

[0008] Preferably, the switch frame (21) further includes a third cavity (213) and a second spring (22); a stop (11) is fixed inside the instrument handle (1); the stop (11) passes through the third cavity (213); one end of the second spring (22) abuts against the upper side wall of the third cavity (213), and the other end abuts against the upper surface of the stop (11).

[0009] Preferably, the top of the switch frame (21) is provided with a stop (211).

[0010] Preferably, the end of the first column (243) away from the second column (242) is an arc-shaped surface.

[0011] The high-frequency electrosurgical unit provided by this utility model has a switch closing device. When the trigger (4) is closed, it drives the trigger component (2) and the switch body (3) to come into contact, so that the switch body (3) is always in the open state. In this way, the switch body (3) will always send an electrical signal to the energy triggering structure, so that the energy triggering structure will always be in the firing state, thereby ensuring the continuous output of energy. Attached Figure Description

[0012] Figure 1 A first-view structural schematic diagram of the switch closing device for a high-frequency electrosurgical unit provided by this utility model;

[0013] Figure 2 A second-view structural schematic diagram of the switch closing device for a high-frequency electrosurgical unit provided by this utility model;

[0014] Figure 3 for Figure 1 A partially enlarged structural diagram;

[0015] Figure 4 This is a schematic diagram of the outer shell provided in an embodiment of the present utility model;

[0016] Figure 5 for Figure 3 A partially enlarged structural diagram;

[0017] Figure 6 This is a schematic diagram of the switch frame provided in an embodiment of the present utility model;

[0018] Figure 7 This is a schematic diagram of the structure of the switch button provided in an embodiment of the present utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1-7 As shown, the switch closing device for a high-frequency electrosurgical unit provided in this embodiment includes an instrument handle 1, a switch body 3, and a trigger component 2. The switch body 3 is fixed inside the instrument handle 1. The trigger component 2 is movably disposed inside the instrument handle 1. When the trigger 4 of the high-frequency electrosurgical unit is closed, the trigger 4 drives the trigger component 2 and the switch body 3 to abut against each other, so that the switch body 3 is in the open state. Those skilled in the art will understand that the switch body 3 and the energy triggering structure are electrically connected. When the trigger 4 is closed, it drives the trigger component 2 and the switch body 3 to abut against each other, so that the switch body 3 is always in the open state. In this way, the switch body 3 will always send an electrical signal to the energy triggering structure, so that the energy triggering structure will always be in the firing state, thereby ensuring continuous energy output.

[0021] Those skilled in the art will understand that the connection between the switch body 3 and the energy triggering structure, as well as the connection between the switch body 3 and the energy triggering structure, is prior art and will not be described further here.

[0022] Furthermore, the trigger assembly 2 includes a switch holder 21; the instrument handle 1 is provided with a slide groove 12 and a switch mounting base 13; the switch mounting base 13 is fixed inside the housing and is close to the lower end of the slide groove 12; the switch holder 21 is slidably disposed in the slide groove 12; the top of the switch holder 21 is provided with an inclined surface 212; the switch body 3 is fixed on the switch mounting base 13 and faces the slide groove 12. Those skilled in the art will understand that the inclined surface 212 at the top of the switch holder 21 is used to abut against the firing part 41 of the trigger 4. When the trigger 4 is pressed, the firing part 41 slides along the inclined surface 212 of the switch holder 21. Through the guiding effect of the inclined surface 212, the rotational motion of the trigger 4 is converted into a linear sliding motion of the switch holder 21 within the slide groove 12. When the trigger 4 is closed, the trigger assembly 2 will touch the switch body 3, thereby putting the switch body 3 in the open state.

[0023] Furthermore, the trigger assembly 2 also includes a switch button 24 and a first spring 23; the switch frame 21 is provided with a first cavity 214 and a second cavity 215; the first cavity 214 and the second cavity 215 are connected; the switch button 24 is composed of a first column 243, a second column 242 and a third column 241 connected in sequence, and is an integral structure; the second column 242 is located in the first cavity 214; the first column 243 extends from the first cavity 214 into the second cavity 215; the third column 241 extends from the bottom of the switch frame 21 into the instrument handle 1; the height of the first cavity 214 is greater than the height of the second column 242; one end of the first spring 23 abuts against the upper side wall of the second cavity 215, and the other end abuts against the upper surface of the second column 242. Those skilled in the art will understand that the initial state of the trigger assembly 2 is as follows: under the elastic force of the first spring 23, the lower surface of the second column 242 is in contact with the lower sidewall of the first cavity 214, and there is a gap 25 between the upper surface of the second column 242 and the upper sidewall of the first cavity 214; during the process of pressing the trigger 4 until the trigger 4 is closed, the switch frame 21 drives the trigger assembly 2 to move down as a whole until the switch button 24 abuts against the switch body 3. When the first column 243 touches the switch body 3, the switch button 24 stops moving down due to the obstruction of the switch body 3. However, at this time, due to the large external force exerted by the human on the trigger 4, the switch frame 21 will continue to move down. At this time, the first spring 23 will be further compressed until the trigger 4 is fully closed. Under the obstruction of the switch body 3, the upper surface of the second column 242 will be in contact with the upper sidewall of the first cavity 214, and there will be a gap 25 between the lower surface of the second column 242 and the lower sidewall of the first cavity 214. When the force of the human grip changes slightly, the switch frame 21 will move slightly upward. However, under the action of the elastic force of the first spring 23, during the stroke of the second column 242 from its upper surface and the first cavity 214 to its lower surface and the lower side wall of the first cavity 214, the first column 243 will always maintain contact with the switch body 3, thereby ensuring that the switch body 3 will not have its energy interrupted due to the shaking of the trigger 4.

[0024] Furthermore, the switch frame 21 also includes a third cavity 213 and a second spring 22; a stop 11 is fixed inside the instrument handle 1; the stop 11 passes through the third cavity 213; one end of the second spring 22 abuts against the upper side wall of the third cavity 213, and the other end abuts against the upper surface of the stop 11. Those skilled in the art will understand that when the switch frame 21 moves downward, the second spring 22 is compressed by the stop 11; when the trigger 4 is fully closed, the spring force of the second spring 22 pushes the switch frame 21 upward until it returns to its initial position.

[0025] Furthermore, a stop 211 is provided on the top of the switch frame 21. Those skilled in the art will understand that the stop 211 is used to limit the movement distance of the firing part 41 of the trigger 4, to prevent the user from using excessive force and causing damage to the switch body 3.

[0026] Furthermore, the end of the first column 243 away from the second column 242 is an arc-shaped surface. Those skilled in the art will understand that the arc-shaped surface allows for better contact with the switch body 3.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A switching and closing device for a high-frequency electrosurgical unit, characterized in that, It includes an instrument handle (1), a switch body (3) and a trigger component (2); the switch body (3) is fixed inside the instrument handle (1); the trigger component (2) is movably disposed inside the instrument handle (1); when the trigger (4) of the high-frequency electrosurgical unit is closed, the trigger (4) drives the trigger component (2) and the switch body (3) to abut against each other, so that the switch body (3) is in the open state.

2. The switching and closing device for a high-frequency electrosurgical unit as described in claim 1, characterized in that, It also includes a housing, the trigger assembly (2) includes a switch holder (21); the instrument handle (1) is provided with a slide groove (12) and a switch mounting base (13); the switch mounting base (13) is fixed inside the housing and close to the lower end of the slide groove (12); the switch holder (21) is slidably disposed in the slide groove (12); the top of the switch holder (21) is provided with an inclined surface (212); the switch body (3) is fixed on the switch mounting base (13) and faces the slide groove (12).

3. The switching and closing device for a high-frequency electrosurgical unit as described in claim 2, characterized in that, The trigger assembly (2) further includes a switch button (24) and a first spring (23); the switch frame (21) is provided with a first cavity (214) and a second cavity (215); the first cavity (214) and the second cavity (215) are connected; the switch button (24) is connected in sequence by a first column (243), a second column (242) and a third column (241), and is an integral structure; the second column (242) is located in the first cavity (214); the first column (243) extends from the first cavity (214) into the second cavity (215); the third column (241) extends from the bottom of the switch frame (21) into the instrument handle (1); the height of the first cavity (214) is greater than the height of the second column (242); one end of the first spring (23) abuts against the upper side wall of the second cavity (215), and the other end abuts against the upper surface of the second column (242).

4. The switching and closing device for a high-frequency electrosurgical unit as described in claim 3, characterized in that, The switch frame (21) also includes a third cavity (213) and a second spring (22); a stop (11) is fixed inside the handle (1); the stop (11) passes through the third cavity (213); one end of the second spring (22) abuts against the upper side wall of the third cavity (213), and the other end abuts against the upper surface of the stop (11).

5. The switching and closing device for a high-frequency electrosurgical unit as described in claim 4, characterized in that, The top of the switch frame (21) is provided with a stop (211).

6. The switching and closing device for a high-frequency electrosurgical unit as described in claim 5, characterized in that, The end of the first column (243) away from the second column (242) is an arc-shaped surface.

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