A bendable and integrated smoking function minimally invasive surgery electric hook

Abstract

The present application relates to the technical field of medical devices, in particular to a bendable minimally invasive surgery electric hook integrated with a smoking function; comprising a smoking pipe, a handle assembly, an electrode pipe, a multi-stage bending assembly and an electric hook; the smoking pipe is fixedly connected to the smoking outer pipe of the handle assembly, an adjusting piece is movably connected to the end of the handle assembly, the electrode pipe is arranged through the adjusting piece and fixedly arranged in the handle assembly, a control module is built-in the handle assembly and electrically connected with the electrode pipe; the multi-stage bending assembly is fixedly arranged at the end of the electrode pipe, a movable piece is fixedly connected with a steel wire group arranged in the electrode pipe, and the electric hook is fixedly arranged at the end of the extended end of the electrode pipe and extends out; the movable piece is driven to move in the electrode pipe by controlling the adjusting piece, and in turn drives the steel wire group to pull the multi-stage bending assembly to bend; the bending electric hook can be integrated with a real-time smoking function in the scene of flexible bending, and the coordination problem of bending operation and smoke removal in minimally invasive surgery is solved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a bendable, smoke-integrated minimally invasive surgical electric hook. Background Technology

[0002] In minimally invasive surgeries such as laparoscopic and thoracoscopic surgeries, electrocautery hooks and electrosurgical units are core surgical instruments, mainly used for tissue cutting, separation, and hemostasis. Traditional straight-bar electrocautery hooks have limited operating angles in narrow surgical fields, making it difficult to accurately handle complex anatomical structures and easily leading to accidental injury and low operating efficiency. Therefore, existing technologies have developed flexible electrocautery hooks, which achieve hook bar bending through a metal serpentine bending component, solving the technical problems of limited operating range and interference from cross-operation of traditional rigid electrocautery hooks.

[0003] Existing flexible electrocautery hooks typically only have electrocautery and electrocoagulation functions. However, they often generate large amounts of surgical smoke or tissue fluid during surgery, which not only obstructs the surgical field of vision and affects operational precision but also poses a risk of respiratory injury to surgical personnel. Furthermore, existing flexible electrocautery hooks require additional, separate suction instruments to remove the smoke or fluid during surgery, making the operation cumbersome and impossible for a single person to perform. Moreover, traditional smoke extraction channels are mostly rigid straight tubes that cannot be assembled with flexible hooks. Combining the two results in a bulky hook that is unsuitable for delicate operations, increasing the number of instruments and operational complexity during surgery, and failing to meet the requirements of minimally invasive surgery for instrument integration and ease of operation. Therefore, there is an urgent need for a flexible, integrated smoke extraction minimally invasive surgical electrocautery hook that can integrate real-time smoke extraction in flexible bending scenarios without the need for additional, separate surgical instruments. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by providing a bendable surgical electric hook with integrated smoke removal function, which can integrate real-time smoke removal function in flexible bending scenarios, thus solving the problem of coordinating bending operation and smoke removal in minimally invasive surgery.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A bendable, integrated smoking function minimally invasive surgical electric hook, characterized in that it includes a smoking tube, a handle assembly, an electrode tube, a multi-stage bending assembly, and an electric hook;

[0007] One end of the handle assembly is provided with a smoking tube, which is fixedly connected to the smoking tube. An adjustment component is movably connected to the other end. The electrode tube passes through the adjustment component and is fixedly disposed inside the handle assembly. The handle assembly has a built-in control module, which is electrically connected to the electrode tube.

[0008] The multi-stage bending assembly is fixedly installed at the end of the electrode tube and includes a steel wire assembly. A movable part is also provided inside the electrode tube and fixedly connected to the steel wire assembly. The electric hook is fixedly installed at the end of the extension of the electrode tube and extends out of the electrode tube. By adjusting the adjusting part, the movable part and the steel wire assembly can be driven, thereby driving the multi-stage bending assembly to move.

[0009] Preferably, the handle assembly has a smoking chamber inside, and the outer smoking tube is connected to the smoking chamber. The electrode tube has a hollow structure inside and is connected to the smoking tube on the outer smoking tube through the smoking chamber. The electrode tube has a hollow structure design, and the electric hook is located at the end of the electrode tube. The smoke generated during the operation can reach the smoking chamber inside the handle assembly through the electrode tube and is finally discharged through the smoking tube at the tail of the handle assembly. This solves the problem that traditional flexible electric hooks cannot effectively handle surgical smoke, prevents smoke from affecting the surgical field of vision, improves the reliability of the surgical process, and can also effectively prevent medical personnel from inhaling the smoke and thus affecting their health.

[0010] Preferably, the multi-stage bending assembly includes several hinged first bending joints, second bending joints, and third bending joints. The first bending joint is located near the electric hook, and the third bending joint is located near the handle assembly. Several second bending joints are hinged between the first bending joint and the third bending joint. The multi-stage bending assembly includes first and third bending joints at both ends and three second bending joints in the middle. Each joint is hinged together. The third bending joint is fixedly mounted on the electrode tube, while the other three second bending joints and one first bending joint are all flexible. The bending angle of each joint does not exceed 23°. The four flexible bending joints allow the multi-stage bending assembly to select a suitable bending angle within the range of 0-90° according to actual needs. An electric hook is fixedly provided at the end of the first bending joint. When the multi-stage bending assembly bends, it can drive the electric hook at the end to bend as well. Each bending joint also has a hollow structure design, so that smoke generated during surgery can pass through even when the multi-stage bending assembly is bent.

[0011] Preferably, the first and third bending joints are fixedly connected to the electrode tube via smooth surfaces at their ends. The first bending joint has a symmetrically arranged outwardly protruding first hinge portion at one end opposite to the smooth surface, and the third bending joint also has a symmetrically arranged inwardly recessed second hinge portion at one end opposite to the smooth surface. The distance between the inner surfaces of the first hinge portions is greater than the distance between the outer surfaces of the second hinge portions. One end of the second bending joint has the first hinge portion, and the other end has the second hinge portion. The first bending joint is hinged to the second hinge portion of the first second bending joint via the first hinge portion. Several second bending joints are connected end-to-end via the first hinge portion and the second hinge portion, and the last second bending joint is connected to the third bending joint via the first hinge portion. The second hinge on the joint is hinged, and the first hinge and the second hinge are connected by rivets; the first bending joint is connected to the second hinge at the end of the second bending joint through the first hinge at its end, and each subsequent second bending joint is connected to the second hinge at the end of the next second bending joint through the first hinge at its own end, and each second bending joint is connected end-to-end through the first hinge at its end to the second hinge at its end, and the last second bending joint is connected to the second hinge on the third bending joint fixed on the electrode tube through the first hinge at its end; each hinge is physically connected by rivets, which ensures that the multi-level bending assembly increases the snake bone strength and anti-sway strength under the condition of smooth bending, and avoids the situation of the electric hook shifting under force during the operation. The rivet connection can be replaced with a wire pre-tightening connection, and the connection between each joint is fixed by applying pre-tightening force through the wire.

[0012] Preferably, on the first, second, and third bending joints, a first limiting surface and a first bending groove are provided on the end near the first hinge portion, and a second limiting surface and a second bending groove are provided on the end near the second hinge portion. The first and second limiting surfaces are planar structures, and the first and second bending grooves are inwardly recessed structures. The first and second limiting surfaces on the bending joints are both planar structures. When the multi-stage bending assembly is in a straightened state, the first and second limiting surfaces abut each other, which can prevent the multi-stage bending assembly from bending in the opposite direction. The first and second bending grooves on the bending joints are trapezoidal groove structures. The trapezoidal geometry of the first and second bending grooves constrains the bending direction of the joint, so that the multi-stage bending assembly can only bend towards the side where the bending groove is located, avoiding the complexity of multi-degree-of-freedom adjustment.

[0013] Preferably, the first limiting surface protrudes from the first bending groove, and the second limiting surface protrudes from the second bending groove. The concave dimension of the first bending groove is larger than that of the second bending groove. During the installation of the multi-stage bending assembly, the first limiting surface and the second limiting surface are aligned in direction, and the first bending groove and the second bending groove are aligned in direction. During the assembly of the bending joint, the first limiting surface and the second limiting surface are installed correspondingly, so that when the multi-stage bending assembly is straightened, the first limiting surface and the second limiting surface are in contact, thereby limiting the multi-stage bending assembly from continuing to bend and exhibiting a reverse bending. The bending phenomenon is characterized by a first limiting surface protruding from the first bending groove and a second limiting surface protruding from the second bending groove. This ensures that the multi-stage bending assembly can only bend along the direction designed by the bending groove during bending activities. The concave dimension of the first bending groove is larger than that of the second bending groove, so that the bending joint is limited by the second bending groove after bending along the first bending groove to a certain angle. This geometric limiting mechanism ensures the stability of the multi-stage bending assembly at the extreme bending angle, avoids the bending joint from bending without restraint, and prevents the traction steel wire from breaking due to excessive bending. This improves the reliability of the bending hook during use.

[0014] Preferably, each of the first, second, and third bending joints has a symmetrically arranged, concave wire fixing portion along the cross-sectional direction at the middle position of the tube body, the direction of the wire fixing portion being perpendicular to the direction of the hinge portion; the wire assembly includes a main traction wire and an auxiliary traction wire, both of which pass through and are fixedly disposed on the symmetrical wire fixing portions, the main traction wire being disposed on the wire fixing portion near the bending groove end, and the auxiliary traction wire being disposed on the end near the limiting surface. On the steel wire fixing part, the main traction steel wire and the auxiliary traction steel wire are symmetrically distributed at 180°. The preload of the two steel wires is 50+N, which ensures the rigidity of the multi-stage bending assembly in both straight and bent states, and eliminates the stress concentration caused by the cross-entanglement of multiple thin steel wires on the steel wire, thus reducing the breakage rate of the steel wire. The pretension control design reduces the linear deviation of the electric hook in the non-bending state and improves the controllability and stability in the bending state. The joint drive of the multi-stage bending assembly can also be replaced by a motor-controlled drive, using a motor to replace the mechanical linkage of steel wire rope traction.

[0015] Preferably, the electrode tube has a limiting groove, the movable part is disposed in the limiting groove, and the movable part has a main steel wire mounting part. The main traction steel wire passes through the electrode tube and is fixedly installed on the main steel wire mounting part. The movable part has a first pin hole, in which a pin is fixedly connected. A smoke passage hole is also formed through the movable part, and the smoke passage hole communicates with the hollow structure inside the electrode tube. The limiting groove on the electrode tube can limit the movement limit of the movable part within the groove. The limiting structure design inside the handle is compatible with the bending joint. The design of the shape-limiting structure and the double-limiting mechanism can effectively ensure that the multi-stage bending component will not bend indefinitely, thus improving its stability at the limit bending angle. The movable part is fixedly connected to the main traction wire through the main steel wire mounting part. The movement of the movable part can drive the traction wire, thereby causing the main traction wire to drive the bending joints on the multi-stage bending component to perform bending movements. The movable part also has a smoke passage hole through it, which is connected to the hollow structure inside the electrode tube. Surgical smoke can pass through the smoke passage hole after passing through the motor tube and then be discharged without affecting the normal emission of smoke during surgery.

[0016] Preferably, the adjusting component has an internal thread, on which a transmission component is provided. The outer surface of the transmission component has an external thread, and the transmission component is threadedly connected to the internal thread of the adjusting component through the external thread. The transmission component also has a second pin hole, and the pin is fixedly connected to the second pin hole. The transmission component drives the movable component to move through the pin. The adjusting component has a transmission component threadedly connected inside, and the transmission component is fixedly connected to the movable component inside the electrode tube through a pin. The adjusting component has a rotary handwheel structure design. By controlling the rotation direction of the rotary handwheel, the internal movable component can move forward and backward, thereby tightening or loosening the main traction steel wire and adjusting the bending angle. By rotating the handwheel, the mechanical transmission drives the multi-stage bending assembly to bend without the need for electronic module response. Furthermore, by adjusting the rotation angle, the multi-stage bending assembly can be freely adjusted within the range of 0-90°, realizing stepless bending of the multi-stage bending assembly within a set angle range controlled by the adjusting component.

[0017] Preferably, the control module is further provided with a conductive part electrically connected to the electrode tube. The conductive part is fixedly connected to the control module via a slotted snap-fit ​​part. The snap-fit ​​part is provided with an outwardly extending extension part, and the extension part is also provided with a vertically and obliquely extending elastic sheet. An elastic fitting part with the same shape as the outer diameter of the electrode tube is fixedly connected to the extension end of the elastic sheet. The elastic fitting part achieves electrical conduction by adhering to the electrode tube through the elastic force of the elastic sheet. The control module and the electrode tube are not connected by a circuit, but rather through the contact between the conductive part and the electrode tube to achieve conduction. The conductive part is made of elastic conductive material and is snapped and fixed to the control module by the snap-fit ​​part. The snap-fit ​​part is connected to the elastic sheet through the extension part. The elastic fitting part at the end of the elastic sheet has the same shape as the outer diameter of the electrode tube. The elastic fitting part adheres tightly to the surface of the electrode tube through the elastic force. The design of the conductive part replaces the traditional circuit connection design, avoiding the problem of wires falling off during use, and also avoiding the problem of smoke corroding the connection circuit due to passing through the electrode tube during surgery, thus improving the stability of the electric hook during use.

[0018] In summary, the beneficial effects of this invention are as follows:

[0019] 1. The bendable and integrated smoke-smoking minimally invasive surgical electric hook of the present invention, by setting the electrode as an electrode tube structure and setting several bending joints on the multi-level bending component as a tubular hollow structure, combined with the smoke-smoking chamber inside the handle and the smoke-smoking tube at the tail, can smoke-smok the smoke generated during the operation, solving the core pain point that traditional bendable electric hooks cannot effectively deal with surgical smoke, and avoiding the problem of smoke affecting the surgical field of vision and human health;

[0020] 2. The bendable and integrated smoking function of the minimally invasive surgical electric hook of the present invention has a multi-level bending component in which the first bending joint, the second bending joint and the third bending joint are physically connected by rivets. This ensures that the multi-level bending component increases the strength of the snake-bone bending and the anti-sway strength under smooth bending adjustment, avoids the electric hook from shifting under force during the operation, and improves the stability after bending.

[0021] 3. The bendable and integrated smoking function of the minimally invasive surgical electric hook of the present invention, through the asymmetrical trapezoidal groove structure design of the first and second bending grooves, and the concave dimension design of the two bending grooves, this geometric shape limiting mechanism ensures the stability of the multi-stage bending component at the extreme bending angle, avoids the situation of excessive bending of the traction wire due to the unlimited bending of the bending joint, and also makes the multi-stage bending component bend only in the direction set by the bending groove, avoiding the complexity of multi-degree-of-freedom adjustment.

[0022] 4. The bendable and integrated smoking function of the minimally invasive surgical electric hook of the present invention has two traction steel wires on the multi-stage bending component. The main traction steel wire and the auxiliary traction steel wire are symmetrically distributed inside the multi-stage bending component, and the two steel wires are preloaded to ensure the rigidity of the multi-stage bending component in the straight and bent states, reduce the linear deviation of the electric hook in the non-bending state, improve the controllability and stability in the bending state, and eliminate the stress concentration caused by the cross-entanglement of multiple thin steel wires on the steel wire, thereby reducing the breakage rate of the steel wire.

[0023] 5. The bendable and integrated smoking function of the minimally invasive surgical electric hook of the present invention has a structural design between the movable part and the electrode tube limiting groove, combined with the geometric limiting design on the bending joint. The dual limiting mechanism can well ensure the stability of the multi-stage bending component under the extreme bending angle. At the same time, the adjusting part can accurately control the bending angle, realizing the stepless bending of the multi-stage bending component within the set angle range. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a bendable, smoke-integrated minimally invasive surgical electric hook according to the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of a bendable, smoke-integrated minimally invasive surgical electric hook according to the present invention;

[0026] Figure 3 This is a schematic diagram of the first bending joint structure of a bendable, smoke-integrated minimally invasive surgical electric hook of the present invention;

[0027] Figure 4 This is a schematic diagram of the second bending joint structure of a bendable, smoke-integrated minimally invasive surgical electric hook according to the present invention;

[0028] Figure 5 This is a schematic diagram of the third bending joint structure of a bendable, smoke-integrated minimally invasive surgical electric hook of the present invention.

[0029] Figure 6 This is a schematic diagram of the straightened state structure of a multi-stage bending component of a minimally invasive surgical electric hook that can be bent and integrates smoking function according to the present invention.

[0030] Figure 7 This is a schematic diagram of the bending state structure of a multi-stage bending component of a bendable minimally invasive surgical electric hook with integrated smoking function according to the present invention.

[0031] Figure 8 This is a schematic diagram of the internal steel wire fixation part of the bending joint of a minimally invasive surgical electric hook with a bendable design and integrated smoking function according to the present invention.

[0032] Figure 9This is a schematic diagram of the wire assembly installation structure of a bendable surgical electric hook with integrated smoking function according to the present invention;

[0033] Figure 10 This is a schematic diagram of the electrode tube structure of a bendable surgical electric hook with integrated smoking function according to the present invention.

[0034] Figure 11 This is a schematic diagram of the movable component structure of a bendable, smoke-integrated minimally invasive surgical electric hook according to the present invention;

[0035] Figure 12 This is a schematic diagram of the adjustment part of a bendable, smoke-integrated minimally invasive surgical electric hook according to the present invention;

[0036] Figure 13 This is a schematic diagram of the conductive part of a bendable surgical electric hook with integrated smoking function according to the present invention.

[0037] Labels in the diagram: 1-Smoking tube, 2-Handle assembly, 210-Outer smoking tube, 220-Adjusting component, 221-Internal thread, 230-Control module, 240-Smoking chamber, 250-Conductive part, 251-Snap-fit ​​part, 252-Extension part, 253-Elastic sheet, 254-Elastic fitting part, 260-Transmission component, 261-External thread, 262-Second pin hole, 3-Electrode tube, 310-Limiting groove, 320-Insulating layer, 330-Electrode tube fixing part, 4-Multi-stage bending assembly, 410-First bending joint, 420 - Second bending joint, 430- Third bending joint, 440- Wire assembly, 441- Main traction wire, 442- Auxiliary traction wire, 450- Movable part, 451- Main wire mounting part, 452- First pin hole, 453- Pin, 454- Smoke passage hole, 461- Smooth surface, 462- First hinge part, 463- Second hinge part, 464- First limiting surface, 465- First bending groove, 466- Second limiting surface, 467- Second bending groove, 468- Wire fixing part, 469- Rivet, 5- Electric hook. Detailed Implementation

[0038] The following specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Example:

[0041] according to Figures 1-2As shown, a bendable surgical electric hook with integrated smoking function includes a smoking tube 1, a handle assembly 2, an electrode tube 3, a multi-stage bending assembly 4, and an electric hook 5.

[0042] One end of the handle assembly 2 is provided with a smoking tube 210, and the smoking tube 1 is fixedly connected to the smoking tube 210. An adjusting member 220 is movably connected to the other end. The electrode tube 3 is disposed through the adjusting member 220 and fixedly disposed inside the handle assembly 2. The handle assembly 2 has a built-in control module 230, and the control module 230 is electrically connected to the electrode tube 3.

[0043] The multi-stage bending assembly 4 is fixedly installed at the end of the electrode tube 3, including several hinged first bending joints 410, second bending joints 420, third bending joints 430 and wire assembly 440. A movable part 450 is also provided inside the electrode tube 3 and fixedly connected to the wire assembly 440. The electric hook 5 is fixedly installed at the end of the extension end of the electrode tube 3 and extends out of the electrode tube 3. By adjusting the adjusting part 220, the movable part 450 can be driven to move inside the electrode tube 3, thereby driving the wire assembly 440 to pull the multi-stage bending assembly 4 to perform bending activities.

[0044] according to Figure 2 As shown, the handle assembly 2 has a smoking chamber 240 inside, and the smoking outer tube 210 is connected to the smoking chamber 240. The electrode tube 3 has a hollow structure inside, and the electrode tube 3 is connected to the smoking tube 1 on the smoking outer tube 210 through the smoking chamber 240. The handle assembly 2 is also equipped with electrocoagulation and electro-cutting buttons, which can control the electrocoagulation and electro-cutting functions of the electric hook. The electrode tube 3 has a hollow structure design, and the electric hook 5 is located at the end of the electrode tube 3. The smoke generated during the operation can reach the smoking chamber 240 inside the handle assembly 2 through the electrode tube 3, and finally be discharged through the smoking tube 1 at the tail of the handle assembly 2. This solves the problem that traditional flexible electric hooks cannot effectively deal with surgical smoke, prevents smoke from affecting the surgical field of vision, and improves the reliability of the surgical process.

[0045] according to Figures 3-5As shown, the multi-stage bending assembly 4 has a first bending joint 410 near the electric hook 5 and a third bending joint 430 near the handle assembly 2. Several second bending joints 420 are hinged between the first bending joint 410 and the third bending joint 430. The first bending joint 410 and the third bending joint 430 are fixedly connected to the electrode tube 3 via smooth surfaces 461 at their ends. The first bending joint 410 has symmetrically arranged outwardly protruding first hinge portions 462 at the end opposite to the smooth surface 461, and the third bending joint 430 has a... The upper part is also symmetrically provided with an inwardly recessed second hinge portion 463. The distance between the inner surface of the first hinge portion 462 and the outer surface of the second hinge portion 463 is greater than the distance between the outer surface of the second hinge portion 463. One end of the second bending joint 420 is provided with the first hinge portion 462, and the other end is provided with the second hinge portion 463. The first bending joint 410 is hinged to the second hinge portion 463 on the first second bending joint 420 through the first hinge portion 462 above. Several second bending joints 420 are connected end to end through the first hinge portion 462 and the second hinge portion 463. The last second bending joint 420 is connected through... The first hinge portion 462 is hinged to the second hinge portion 463 on the third bending joint 430, and the first hinge portion 462 and the second hinge portion 463 are connected by rivets 469; the multi-stage bending assembly 4 includes a first bending joint 410 and a third bending joint 430 at both ends and three second bending joints 420 in the middle, each joint is hinged to each other, wherein the third bending joint 430 is fixedly mounted on the electrode tube 3, and the other three second bending joints 420 and one first bending joint 410 can be bent and moved, and the bending degree of each joint does not exceed 23°. A movable bending joint allows the multi-stage bending component 4 to select a suitable bending angle within the range of 0-90° according to actual needs; an electric hook 5 is fixedly installed at the end of the first bending joint 410, which can drive the electric hook 5 at the end to bend together when the multi-stage bending component 4 bends; each bending joint also has a hollow structure design, so that smoke generated during surgery can pass through even when the multi-stage bending component 4 is bent; each hinge is physically connected by rivets 469, which ensures that the multi-stage bending component 4 increases the snake bone strength and anti-sway strength under the condition of smooth bending.

[0046] according to Figures 3-7As shown, on the first bending joint 410, the second bending joint 420, and the third bending joint 430, a first limiting surface 464 and a first bending groove 465 are provided on the end near the first hinge portion 462, and a second limiting surface 466 and a second bending groove 467 are provided on the end near the second hinge portion 463. The first limiting surface 464 and the second limiting surface 466 are planar structures, and the first bending groove 465 and the second bending groove 467 are inwardly recessed structures. The first limiting surface 464 protrudes from the first bending groove 462. 65. The second limiting surface 466 protrudes from the second bending groove 467. The concave dimension of the first bending groove 465 is larger than that of the second bending groove 467. During the installation of the multi-stage bending assembly 4, the first limiting surface 464 and the second limiting surface 466 are in the same direction, and the first bending groove 465 and the second bending groove 467 are in the same direction. The first limiting surface 464 and the second limiting surface 466 on the bending joint are both planar structures. When the multi-stage bending assembly 4 is in the straightened state, the first limiting surface 464 and the second limiting surface 466 are in the same direction. The contact surface 466 prevents the multi-stage bending component 4 from bending in the opposite direction. The first bending groove 465 and the second bending groove 467 on the bending joint are designed as trapezoidal grooves. The trapezoidal geometry of the first bending groove 465 and the second bending groove 467 constrains the bending direction of the joint, so that the multi-stage bending component 4 can only bend towards the side where the bending groove is set. During the assembly of the bending joint, the first limiting surface 464 and the second limiting surface 466 are installed correspondingly, so that the first limiting surface 464 and the second limiting surface 466 are in contact when the multi-stage bending component 4 is straight, thereby restricting the multi-stage bending component 4 from continuing to bend and causing the phenomenon of reverse bending. The first limiting surface 464 protrudes from the first bending groove 465, and the second limiting surface 466 protrudes from the second bending groove 467, so that the multi-stage bending component 4 can only bend along the direction designed by the bending groove when bending. The concave dimension of the first bending groove 465 is larger than the concave dimension of the second bending groove 467, so that the bending joint will be limited by the second bending groove 467 after bending along the first bending groove 465 to a certain angle.

[0047] according to Figure 8 , Figure 9As shown, each of the first bending joint 410, the second bending joint 420, and the third bending joint 430 has a symmetrically arranged inwardly recessed wire fixing part 468 at the middle position of the tube body, with the direction of the wire fixing part 468 perpendicular to the direction of the hinge part; the wire assembly 440 includes a main traction wire 441 and an auxiliary traction wire 442, both of which pass through and are fixedly arranged on the symmetrical wire fixing parts 468, with the main traction wire 441 located at the wire fixing part 468 near one end of the bending groove. On part 8, the auxiliary traction steel wire 442 is set on the steel wire fixing part 468 near the limiting surface; the main traction steel wire 441 and the auxiliary traction steel wire 442 are symmetrically distributed at 180°. The preload of the two steel wires is 50+N, which ensures the rigidity of the multi-stage bending assembly 4 in both straight and bent states, and eliminates the stress concentration caused by the cross-winding of multiple thin steel wires on the steel wire, thus reducing the breakage rate of the steel wire; the pretension control design reduces the linear deviation of the electric hook 5 in the non-bending state and improves the controllability and stability in the bending state.

[0048] according to Figures 10-12As shown, a limiting groove 310 is provided on the electrode tube 3, and a movable part 450 is set in the limiting groove 310. A main steel wire mounting part 451 is provided on the movable part 450, and the main traction steel wire 441 passes through the electrode tube 3 and is fixedly installed on the main steel wire mounting part 451. A first pin hole 452 is provided on the movable part 450, and a pin 453 is fixedly connected in the first pin hole 452. A smoke passage hole 454 is also provided through the movable part 450, and the smoke passage hole 454 is connected to the hollow structure inside the electrode tube 3. An internal thread 221 is built into the adjusting part 220, and a transmission part 2 is provided on the internal thread 221. 60. The outer surface of the transmission component 260 is provided with external threads 261. The transmission component 260 is threadedly connected to the internal threads 221 of the adjusting component 220 through the external threads 261. The transmission component 260 is also provided with a second pin hole 262. The pin 453 is fixedly connected to the second pin hole 262. The transmission component 260 drives the movable component 450 to move through the pin 453. The limiting groove 310 on the electrode tube 3 can limit the extreme position of the movable component 450 in the groove. This limiting structure design inside the handle assembly 2, combined with the geometric limiting structure design on the bending joint, can effectively ensure the multi-level... The bending component 4 does not bend indefinitely, improving its stability at extreme bending angles. An insulating layer 320 is also fitted onto the surface of the electrode tube 3 to prevent accidental contact with the electrode tube 3 during surgery. The movable component 450 is fixedly connected to the main traction wire 441 via the main wire mounting part 451. Movement of the movable component 450 can drive the main traction wire 441, thereby causing the main traction wire 441 to drive the bending joints on the multi-stage bending component 4 to perform bending movements. The adjusting component 220 has a threaded connection to a transmission component 260, which is connected to the movable component 450 inside the electrode tube 3. The components are fixedly connected by pins 453. The adjusting component 220 is designed with a rotating handwheel. By controlling the rotation direction of the rotating handwheel, the internal moving component 450 can be moved back and forth, thereby tightening or loosening the main traction steel wire 441 and adjusting the bending angle. By rotating the handwheel, the mechanical transmission drives the multi-stage bending component to bend without the need for electronic module response. Furthermore, by adjusting the rotation angle, the multi-stage bending component can be freely adjusted within a certain angle range, realizing stepless bending of the multi-stage bending component 4 within a set angle range controlled by the adjusting component 220.

[0049] according to Figure 12As shown, the control and operation logic of this invention is as follows: the surgeon rotates the handwheel-shaped adjusting member 220, the internal teeth 221 of the adjusting member 220 drive the external teeth 261 to move the transmission member 260 axially, and the movable member 450 fixed to the transmission member 260 by the pin 453 will also move axially synchronously with the transmission member 260, thereby causing the main traction steel wire 441 to tighten or loosen. When the main traction steel wire 441 tightens, it will drive the multi-stage bending assembly 4 to bend in the direction of the first bending groove 465 and the second bending groove 467, thereby realizing multi-stage bending. The bending component 4 drives the electric hook 5 to bend. When the main traction wire 441 is relaxed, the multi-stage bending component 4 will relax and straighten. When the first limiting surface 464 and the second limiting surface 466 on the bending joint come into contact, the multi-stage bending component 4 is fully straightened. Due to the design of the limiting surface, the multi-stage bending component 4 will not continue to bend in the opposite direction, thus realizing the straightening state of the electric hook 5 driven by the multi-stage bending component 4. In this way, the adjusting component 220 can control the bending or straightening of the electric hook 5. The surgeon can use the electrocoagulation and electrocution button on the handle component 2 to make the electric hook 5 perform electrocoagulation or electrocution on the surgical site.

[0050] according to Figure 13 As shown, the control module 230 is also provided with a conductive part 250 electrically connected to the electrode tube 3. The conductive part 250 is fixedly connected to the control module 230 through a slot-shaped snap-fit ​​part 251. The snap-fit ​​part 251 is provided with an outwardly extending extension part 252. The extension part 252 is also provided with a vertically and obliquely extending elastic sheet 253. An elastic fitting part 254 with the same shape as the outer diameter of the electrode tube 3 is fixedly connected to the extension end of the elastic sheet 253. The elastic fitting part 254 achieves electrical conduction by fitting with the electrode tube 3 through the elastic force of the elastic sheet 253. The control module 230 and the electrode tube 3 are connected through the contact between the conductive part 250 and the electrode tube 3. The conductive part 250 is elastic. The conductive material is snapped and fixedly installed on the control module 230 by the snap-fit ​​part 251. The snap-fit ​​part 251 is connected to the elastic sheet 253 through the extension part 252. The elastic fitting part 254 provided on the end of the elastic sheet 253 has the same shape as the outer diameter of the electrode tube 3. When the outer shell of the handle assembly 2 is closed, the elastic fitting part 254 will be subjected to the pressure of the handle shell. At this time, the elastic sheet 253 will be compressed. Since the elastic sheet 253 is made of a conductive material with good elasticity, when subjected to force, the elastic sheet 253 will deform and apply a reverse elastic force to the elastic fitting part 254 at the end. The elastic fitting part 254 will then be tightly attached to the surface of the electrode tube 3 under the action of elastic force, thereby realizing electrical conduction.

Claims

1. A bendable, minimally invasive surgical electric hook with integrated smoking function, characterized in that, It includes a smoking tube (1), a handle assembly (2), an electrode tube (3), a multi-stage bending assembly (4), and an electric hook (5); One end of the handle assembly (2) is provided with a smoking tube (210), the smoking tube (1) is fixedly connected to the smoking tube (210), and an adjusting member (220) is movably connected to the other end. The electrode tube (3) is disposed through the adjusting member (220) and fixedly disposed inside the handle assembly (2). The handle assembly (2) has a built-in control module (230), and the control module (230) is electrically connected to the electrode tube (3). The multi-stage bending assembly (4) is fixedly disposed at the end of the electrode tube (3), including a steel wire assembly (440). A movable part (450) is also disposed inside the electrode tube (3) and fixedly connected to the steel wire assembly (440). The electric hook (5) is fixedly disposed at the end of the extension end of the electrode tube (3) and extends out of the electrode tube (3). By adjusting the adjusting part (220), the movable part (450) and the steel wire assembly (440) can be driven to move, thereby driving the multi-stage bending assembly (4). The multi-stage bending assembly (4) includes several hinged first bending joints (410), second bending joints (420), and third bending joints (430). The first bending joint (410) is located near the electric hook (5), and the third bending joint (430) is located near the handle assembly (2). Several second bending joints (420) are hinged between the first bending joint (410) and the third bending joint (430). The first bending joint (410) and the third bending joint (430) are fixedly connected to the electrode tube (3) via smooth surfaces (461) at their ends. A first hinge portion (462) protruding outward is symmetrically arranged on the end of the first bending joint (410) opposite to the smooth surface (461). A second hinge portion (463) protruding inward is symmetrically arranged on the end of the third bending joint (430) opposite to the smooth surface (461). The distance between the inner surfaces of the first hinge portion (462) and the outer surfaces of the second hinge portion (463) is greater than the distance between the outer surfaces of the second hinge portion (463). One end of the second bending joint (420) is provided with the first hinge portion (462). 2) The other end is provided with a second hinge part (463). The first bending joint (410) is hinged to the second hinge part (463) above the first second bending joint (420) through the first hinge part (462) above. A plurality of second bending joints (420) are connected end to end to the second hinge part (463) through the first hinge part (462). The last second bending joint (420) is hinged to the second hinge part (463) on the third bending joint (430) through the first hinge part (462). The first hinge part (462) and the second hinge part (463) are connected by rivets (469). On the first bending joint (410), the second bending joint (420) and the third bending joint (430), a first limiting surface (464) and a first bending groove (465) are provided on the end near the first hinge portion (462), and a second limiting surface (466) and a second bending groove (467) are provided on the end near the second hinge portion (463). The first limiting surface (464) and the second limiting surface (466) are planar structures, and the first bending groove (465) and the second bending groove (467) are inwardly recessed structures. The first limiting surface (464) protrudes from the first bending groove (465), the second limiting surface (466) protrudes from the second bending groove (467), the inner concave dimension of the first bending groove (465) is larger than the inner concave dimension of the second bending groove (467), during the installation of the multi-stage bending assembly (4), the first limiting surface (464) and the second limiting surface (466) are in the same direction, and the first bending groove (465) and the second bending groove (467) are in the same direction; Each of the first bending joint (410), the second bending joint (420), and the third bending joint (430) has a symmetrically arranged wire fixing part (468) with an inwardly recessed cross-sectional direction at the middle position of the tube body. The direction of the wire fixing part (468) is perpendicular to the direction of the hinge part. The wire group (440) includes a main traction wire (441) and an auxiliary traction wire (442). The main traction wire (441) and the auxiliary traction wire (442) pass through and are fixedly arranged on the symmetrical wire fixing parts (468). The main traction wire (441) is arranged on the wire fixing part (468) near one end of the bending groove, and the auxiliary traction wire (442) is arranged on the wire fixing part (468) near one end of the limiting surface. The electrode tube (3) has a limiting groove (310), the movable part (450) is disposed in the limiting groove (310), the movable part (450) is provided with a main steel wire mounting part (451), the main traction steel wire (441) passes through the electrode tube (3) and is fixedly installed on the main steel wire mounting part (451); the movable part (450) has a first pin hole (452), a pin (453) is fixedly connected in the first pin hole (452), and a smoke passage hole (454) is also opened through the movable part (450), the smoke passage hole (454) is connected to the hollow structure inside the electrode tube (3); The control module (230) is also provided with a conductive part (250) electrically connected to the electrode tube (3). The conductive part (250) is fixedly connected to the control module (230) through a slotted snap-fit ​​part (251). The snap-fit ​​part (251) is provided with an outwardly extending extension part (252). The extension part (252) is also provided with a vertically and obliquely extending elastic sheet (253). The extension end of the elastic sheet (253) is also fixedly connected with an elastic fitting part (254) with the same shape as the outer diameter of the electrode tube (3). The elastic fitting part (254) achieves electrical conduction by fitting with the electrode tube (3) through the elastic force of the elastic sheet (253).

2. The bendable, integrated smoking function minimally invasive surgical electric hook according to claim 1, characterized in that, The handle assembly (2) has a smoking chamber (240) inside, and the smoking outer tube (210) is connected to the smoking chamber (240). The electrode tube (3) has a hollow structure inside, and the electrode tube (3) is connected to the smoking tube (1) on the smoking outer tube (210) through the smoking chamber (240).

3. The bendable, integrated smoking function minimally invasive surgical electric hook according to claim 1, characterized in that, The adjusting member (220) has an internal thread (221) inside, and a transmission member (260) is provided on the internal thread (221). The outer surface of the transmission member (260) is provided with an external thread (261). The transmission member (260) is threadedly connected to the internal thread (221) of the adjusting member (220) through the external thread (261). The transmission member (260) also has a second pin hole (262). The pin (453) is fixedly connected to the second pin hole (262). The transmission member (260) drives the movable member (450) to move through the pin (453).

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