Traction fixing device for single-port thoracoscope pulmonary surgery

Abstract

The invention relates to the technical field of thoracoscope traction, and provides a traction fixing device for a single-hole thoracoscope lung surgery, which comprises a connecting soft seat, a flexible connecting belt is arranged on the connecting soft seat, and the connecting soft seat is connected with the flexible connecting belt, a positioning pin, an arc-shaped limiting plate and other structures. The connecting soft seat is attached to the body surface and is fixed in a surrounding mode through the flexible connecting belt, a stable rigid foundation is provided for the whole device, and after the traction end and angle adjustment are completed, the positioning pin can be inserted into hole grooves of the aligned fan-shaped rotating button and the semicircular limiting plate, and mechanical interlocking is achieved. Meanwhile, an arc-shaped limiting plate on the arc-shaped traction plate always slides in a mode of being attached to the outer edge of the semicircular limiting plate, and the swing track is restrained. The structures jointly ensure that the device cannot move integrally under the stress state, the traction angle is firmly locked, stable traction force comparable to that of a mechanical arm is provided for an operation, and the problems that in the prior art, stability is poor and adjustment is not accurate are solved.

Description

Technical Field

[0001] This invention relates to the field of thoracoscopic traction technology, specifically to a traction fixation device for single-port thoracoscopic lung surgery. Background Technology

[0002] In single-port thoracoscopic lung surgery, obtaining a stable, adequate, and flexibly adjustable surgical field is crucial to the success of the procedure. Because there is only a single incision of approximately 3-5 cm, all surgical instruments (including endoscopes, cutting and suturing devices, grasping forceps, etc.) must enter through this single channel. This can easily lead to interference between instruments, severely limiting surgical field exposure and operating space. Especially when dealing with deep or dorsal lobes of the lung, the core challenge remains how to achieve continuous, stable, and directional traction on the target lung tissue without adding additional incisions.

[0003] Currently, two main methods are used in clinical practice to address traction issues, but both have significant drawbacks. The first is manual traction, where an assistant uses forceps to grasp and pull the lung lobe through the operating port. This method is highly dependent on the assistant's experience and physical strength; maintaining a fixed posture for extended periods easily leads to fatigue, causing unstable traction, vibration, or accidental slippage. This severely impacts the safety of the surgeon performing delicate procedures such as vascular dissection and lymph node dissection, and may cause lung tissue damage due to repeated clamping. The second method is simple mechanical fixation devices. Some devices suspend the traction device on the operating table via a fixed arm, but their adjustment mechanisms are often cumbersome. Changing the position and angle usually requires tightening and loosening multiple joints in different directions, a tedious and time-consuming process that is difficult to finely adjust within the confined space of a single port. More importantly, these simple devices lack a reliable self-locking mechanism, making them prone to slow displacement under the continuous tension of the lung tissue's elastic recoil, leading to traction failure. In addition, existing equipment does not integrate intraoperative lighting, and the illumination of deep surgical fields relies entirely on the endoscopic light source. When instruments obstruct the lens or the angle is poor, the clarity of the field of vision will be severely reduced. Summary of the Invention

[0004] This invention proposes a traction fixation device for single-port thoracoscopic lung surgery, which solves the problems of poor stability and inaccurate adjustment in related technologies.

[0005] The technical solution of the present invention is as follows: a traction and fixation device for single-port thoracoscopic lung surgery, comprising a connecting soft seat, wherein a flexible connecting strap is provided on the connecting soft seat; The top of the connecting soft seat is fixedly connected to the main frame, and the top of the main frame is provided with a lighting component. The main frame is slidably fitted with a synchronous displacement component for traction and fixation. The synchronous displacement component is rotatably mounted on one end inside the main frame and is provided with a traction component for adjusting the traction angle.

[0006] As a preferred embodiment of the present invention, a circular guide rail is provided on the top of the connecting soft seat, and a lighting component is movably sleeved on the guide rail.

[0007] In a preferred embodiment of the present invention, the lighting assembly comprises a guide frame, which is movably fitted onto the outer circumferential surface of the guide rail. Two symmetrically arranged guide wheels are rotatably mounted on the inner wall of the guide frame. The guide wheels are in contact with the inner wall of the guide rail. A deformable connecting rod is fixedly connected to the top of the guide wheel. A lighting lamp is installed at the top of the deformable connecting rod. A battery module and a switchable module are respectively provided on the top of the lighting lamp.

[0008] As a preferred embodiment of the present invention, the synchronous displacement component is composed of a rotating shaft, a drive gear is fixedly sleeved on the outer circumferential surface of the rotating shaft, the rotating shaft is rotatably mounted on one side of the main frame, a rotating disk is rotatably mounted inside the main frame, an external gear ring is fixedly sleeved on the outer circumferential surface of the rotating disk, the external gear ring meshes with the drive gear, and vortex guide grooves are provided on both the upper and lower surfaces of the rotating disk. A displacement slider is movably sleeved on the outer shaft surface of the rotating disk. Two symmetrically arranged vortex guide blocks are provided on the inner wall of the displacement slider, and the vortex guide blocks are inserted into the vortex guide groove.

[0009] As a preferred embodiment of the present invention, a knob is fixedly connected to the top of the rotating shaft, and limit blocks are provided on both the upper and lower surfaces of the displacement slider, with the limit blocks slidably assembled inside the main frame.

[0010] In a preferred embodiment of the present invention, the traction assembly is composed of a semi-circular limiting plate, which is fixedly connected to one end of the displacement slider, and an internal threaded cylinder is provided inside the center of the semi-circular limiting plate.

[0011] As a preferred embodiment of the present invention, the internal threaded cylinder is internally threaded to a threaded shaft, the bottom of the threaded shaft is fixedly connected to a bottom plate, and the bottom of the bottom plate is fixedly connected to an arc-shaped traction plate.

[0012] As a preferred embodiment of the present invention, a fan-shaped knob is fixedly connected to the top of the threaded shaft, and a plurality of circumferentially distributed through slots are provided on the fan-shaped knob. A hole slot is provided on the top of the semi-circular limiting plate, and a positioning pin is inserted into the hole slot and one of the through slots. An arc-shaped limiting plate is fixedly connected to the top of the bottom plate, and the inner wall of the arc-shaped limiting plate is attached to the outer circumferential surface of the semi-circular limiting plate.

[0013] The working principle and beneficial effects of this invention are as follows: 1. This invention, through the design of a soft seat and flexible connecting belt, a positioning pin and an arc-shaped limiting plate, etc., connects the soft seat to the body surface and is fixed by the flexible connecting belt, providing a stable and rigid foundation for the entire device. At the traction end, after the angle adjustment is completed, the positioning pin can be inserted into the aligned fan-shaped knob and the slot of the semi-circular limiting plate to achieve mechanical interlocking; at the same time, the arc-shaped limiting plate on the arc-shaped traction plate always slides against the outer edge of the semi-circular limiting plate, constraining its swing trajectory. These structures together ensure that the device will not shift as a whole under stress, and the traction angle is firmly locked, providing a stable traction force comparable to that of a robotic arm for surgery.

[0014] 2. This invention achieves multi-level fine control of traction position and angle through the design of synchronous displacement components (vortex guide groove and guide block) and angle fine-tuning components (fan-shaped knob and threaded shaft). Rotating the knob drives the rotating disk to rotate, and the vortex guide groove on its surface converts the rotational motion into precise linear advance and retreat of the displacement slider through the guide block, completing the depth adjustment. Angle adjustment is achieved by rotating the fan-shaped knob, which drives the threaded shaft and internal threaded cylinder to produce a relatively small angular displacement, thereby finely changing the orientation of the arc-shaped traction plate. This system transforms the doctor's large-scale manual operation into precise displacement at the millimeter or even angle level, greatly improving the convenience and accuracy of adjusting the traction posture within a confined single-port surgical field. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the main frame of the present invention; Figure 3 This is a schematic diagram of the overall lighting component of the present invention; Figure 4 This is a schematic diagram of the internal structure of the main frame of the present invention; Figure 5 This is a schematic diagram of the overall structure of the synchronous displacement component of the present invention; Figure 6 This is a schematic diagram of the overall structure of the displacement slider of the present invention; Figure 7 This is a schematic diagram of the overall structure of the traction component of the present invention.

[0017] In the diagram: 1. Connecting soft seat; 2. Flexible connecting belt; 3. Main frame; 4. Guide rail; 5. Lighting components; 51. Guide frame; 52. Guide wheel; 53. Lighting lamp; 54. Battery module; 55. Switch module; 56. Deformable link; 6. Synchronous displacement assembly; 61. Rotating shaft; 62. Drive gear; 63. Knob; 64. Rotating disk; 65. External gear ring; 66. Vortex guide groove; 67. Displacement slider; 68. Vortex guide block; 69. Limit block; 7. Traction assembly; 71. Semicircular limiting plate; 72. Internal threaded cylinder; 73. Threaded shaft; 74. Fan-shaped knob; 75. Positioning pin; 76. Bottom plate; 77. Traction plate; 78. Arc-shaped limiting plate. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] Example like Figures 1-7 As shown, a traction fixation device for single-port thoracoscopic lung surgery includes a connecting soft seat 1, on which a flexible connecting strap 2 is provided; The top of the connecting soft seat 1 is fixedly connected to the main frame 3. The top of the main frame 3 is provided with a lighting component 5. The main frame 3 is slidably fitted with a synchronous displacement component 6 for traction and fixation. The synchronous displacement component 6 is rotatably mounted on one end inside the main frame and is provided with a traction component 7 for traction angle adjustment.

[0020] The device is based on a flexible connecting seat 1 that conforms to the patient's body surface, such as the chest wall. This seat is typically made of silicone or a soft polymer to enhance comfort and reduce pressure. A flexible connecting strap 2 is attached to the seat, which can be secured around the patient's body using Velcro or buckles, thus stably anchoring the entire device near the surgical area. At the top of the connecting seat 1, a rigid main frame 3 is vertically fixed upwards. This frame, typically made of aluminum alloy or stainless steel, forms the core support structure of the device. An independent lighting assembly 5 is located at the top of the main frame 3 to provide auxiliary lighting inside the surgical incision. Crucially, inside the main frame 3, a synchronized displacement assembly 6 is precisely slidably fitted along its length. Part of this synchronized displacement assembly 6 is typically a slider structure extending into the main frame, while at its outer end, via a pivot or bearing seat, a traction assembly 7 is rotatably mounted. The traction assembly 7 is the end effector that directly clamps or pulls lung tissue. Its working principle is as follows: by driving the synchronous displacement component 6, the traction component 7 can be controlled to move deeper into the incision or withdraw outward; at the same time, the traction component 7 itself can rotate around its installation point to adjust the direction and angle of the traction force, thereby achieving multi-degree-of-freedom fine control of the lung lobe position and meeting the exposure requirements of deep tissues in a single-port surgical field.

[0021] A circular guide rail 4 is provided on the top of the connecting soft seat 1, and a lighting component 5 is movably mounted on the guide rail 4.

[0022] A raised circular guide rail 4 is specially provided in the connection area between the soft base 1 and the main frame 3, or directly on the top base of the main frame 3. This guide rail 4 is a complete annular structure, with a cross-section that can be T-shaped, dovetail-shaped, or circular, and is fixedly mounted on the base. The entire or partial structure of the illumination assembly 5 is typically a slider or frame with a matching inner cavity that is movably fitted onto this circular guide rail 4. This means that the illumination assembly 5 and the guide rail 4 are connected by a sliding pair, allowing the illumination assembly 5 to rotate smoothly 360 degrees along the entire circumferential path of the circular guide rail 4. The surgeon can manually push the illumination assembly 5 to rotate it around the circular guide rail 4 according to the position of the main operating port, the angle of instrument entry, and the tissue area requiring focused illumination. This projects light into the thoracic cavity from the optimal lateral angle, effectively avoiding obstruction from other surgical instruments and reducing glare on instrument surfaces, providing clear, shadowless supplementary illumination for the endoscopic field of view.

[0023] The lighting component 5 consists of a guide frame 51, which is movably fitted onto the outer circumference of the guide rail 4. Two symmetrically arranged guide wheels 52 are rotatably mounted on the inner wall of the guide frame 51. The guide wheels 52 are in contact with the inner wall of the guide rail 4. A deformable connecting rod 56 is fixedly connected to the top of the guide wheel 52. A lighting lamp 53 is installed at the top of the deformable connecting rod 56. A battery module 54 and a switchable module 55 are respectively provided on the top of the lighting lamp 53.

[0024] The core support and moving body of the lighting component 5 is a ring-shaped or C-shaped guide frame 51, whose inner diameter is slightly larger than the outer diameter of the circular guide rail 4, thus movably fitting onto the guide rail 4. To achieve smooth, low-resistance circular motion, two guide wheels 52 are symmetrically mounted on the inner wall of the guide frame 51 facing the center of the guide rail 4, via short shafts and miniature bearings. The wheel surfaces of these two guide wheels 52 are in close contact with the inner sidewall or a specific guide surface of the circular guide rail 4, converting sliding friction into rolling friction, allowing the doctor to rotate the component with only a small force. The supporting structure for the lighting source is a deformable connecting rod 56, the bottom end of which is fixedly connected to the top of one of the guide wheels 52 or to a specific mounting base on the guide frame 51. This connecting rod 56 is typically made of malleable metal such as a snake bone tube or multiple articulated segments, allowing the doctor to bend and shape it at any angle. At the top of the deformable connecting rod 56, an illumination lamp 53, typically using high-brightness, low-heat LED beads, is mounted as the light source. The top of the lighting lamp 53 integrates a power supply and control unit: the battery module 54, such as a rechargeable lithium battery, provides power to the LED lamp; the switch module 55 integrates a physical button or touch switch for controlling the lamp's on / off state and brightness adjustment. Its working principle is as follows: the doctor first rotates the guide frame 51 along the circular guide rail 4 to the approximate position, then bends the deformable connecting rod 56 to precisely adjust the illumination angle of the lighting lamp 53 to align with the deep surgical field, and finally turns on the light through the switch module 55. The entire process is flexible and does not affect the sterile area.

[0025] The synchronous displacement component 6 consists of a rotating shaft 61. A drive gear 62 is fixedly sleeved on the outer circumferential surface of the rotating shaft 61. The rotating shaft 61 is rotatably mounted on one side of the main frame 3. A rotating disk 64 is rotatably mounted inside the main frame 3. An external gear ring 65 is fixedly sleeved on the outer circumferential surface of the rotating disk 64. The external gear ring 65 meshes with the drive gear 62. A vortex guide groove 66 is provided on both the upper and lower surfaces of the rotating disk 64. A displacement slider 67 is movably sleeved on the outer shaft surface of the rotating disk 64. Two symmetrically arranged vortex guide blocks 68 are provided on the inner wall of the displacement slider 67. The vortex guide blocks 68 and the vortex guide grooves 66 are interlocked.

[0026] The synchronous displacement component 6 is the core precision transmission mechanism that enables the linear feed of the traction component 7. Its power input originates from a horizontally positioned rotating shaft 61, which is rotatably mounted on one side wall of the main frame 3 via a bearing housing. A drive gear 62 is fixedly fitted onto the outer circumference of the section of the rotating shaft 61 that extends into the main frame 3 via a key connection. Inside the main frame 3, at a position parallel to but spatially offset from the rotating shaft 61, a disc-shaped rotating disk 64 is vertically rotatable via a central rotating shaft. An external gear ring 65 is fixedly embedded or machined onto the entire outer circumference of the rotating disk 64. The drive gear 62 directly meshes with the external gear ring 65, forming a single-stage gear reduction mechanism. More importantly, a vortex-shaped guide groove 66 is machined on both the front and back surfaces of the rotating disk 64, i.e., the upper and lower end faces, starting from the edge of the disk and spiraling towards the center. A displacement slider 67, serving as the output actuator, has a central hole and is movably fitted around the central shaft of the rotating disk 64 or onto an independent guide shaft, allowing the slider to move radially along the disk surface but not rotate. On the inner wall of the displacement slider 67 facing the rotating disk, two symmetrically arranged protrusions, namely vortex guide blocks 68, are fixedly installed. These two guide blocks 68 are respectively inserted into the vortex guide grooves 66 on the upper and lower surfaces of the rotating disk 64. The transmission principle is as follows: When the rotating shaft 61 is driven, the drive gear 62 drives the meshing external gear ring 65 and the entire rotating disk 64 to rotate slowly. Since the vortex guide blocks 68 are engaged within the vortex guide grooves 66, and the guide grooves are helical, the rotational motion of the rotating disk 64 forces the guide blocks 68 to move along the groove's trajectory, thus converting it into precise linear motion of the displacement slider 67 along the internal guide rails of the main frame 3, either inward or outward, achieving synchronous drive that converts rotational input into linear displacement.

[0027] A knob 63 is fixedly connected to the top of the rotating shaft 61, and limit blocks 69 are provided on both the upper and lower surfaces of the displacement slider 67. The limit blocks 69 are slidably assembled inside the main frame 3.

[0028] To facilitate precise manual operations by doctors under aseptic conditions, a knob 63 with anti-slip texture is fixedly connected to the top of the rotating shaft 61, extending beyond the main frame. By rotating this knob 63 clockwise or counterclockwise, the doctor can directly drive the rotating shaft 61 and the drive gear 62 to rotate, ultimately controlling the movement of the displacement slider 67 through the gear pair and volute mechanism. To ensure absolutely smooth, stable, and uninterrupted linear movement of the displacement slider 67, a limiting block 69 is fixedly connected to or integrally machined onto its upper and lower surfaces or front and rear sides. Inside the main frame 3, at corresponding positions, precision linear grooves or guide rails matching the cross-sectional shape of these two limiting blocks 69 are machined. These two limiting blocks 69 are respectively embedded and slidably assembled in these two linear grooves. In this way, when the displacement slider 67 moves, the limiting block 69 on it is strictly restricted to sliding only in the linear groove of the main frame 3, thereby completely eliminating any possibility of radial movement or rotation, ensuring that the linear displacement converted from the rotation of the rotating disk 64 is accurate and coaxial, and making the forward and backward control of the traction component 7 stable and reliable.

[0029] The traction assembly 7 is composed of a semi-circular limiting plate 71, which is fixedly connected to one end of the displacement slider 67. An internal threaded cylinder 72 is provided inside the center of the semi-circular limiting plate 71.

[0030] The traction assembly 7 is directly connected to the displacement slider 67 and serves as the angle adjustment base for mounting the final traction head. Its main body is a semi-circular limiting plate 71, which is a thick plate structure that is semi-circular or nearly semi-circular. One straight edge of the semi-circular limiting plate 71 is vertically fixed to the end of the displacement slider 67 that extends beyond the main frame, using screws or welding. Therefore, when the synchronous displacement assembly 6 drives the displacement slider 67 to move linearly, the entire traction assembly 7 also moves linearly synchronously, achieving a wide range of position adjustments for the traction head. At the geometric center of the semi-circular limiting plate 71, an internally threaded cylinder 72 is vertically embedded or machined. This internally threaded cylinder 72 is a metal sleeve with precision-machined internal threads, its axis perpendicular to the surface of the semi-circular limiting plate. The internally threaded cylinder 72 serves as the core connecting and transmission component for subsequent angle fine-tuning and traction head installation, providing a threaded pair foundation for precise adjustment of the traction angle. The entire traction assembly is fixed to the displacement slider via the semi-circular limiting plate 71, while the internally threaded cylinder 72 provides an interface and adjustment function for the next-level components.

[0031] The internal threaded cylinder 72 is internally threaded to a threaded shaft 73, the bottom of the threaded shaft 73 is fixedly connected to a bottom plate 76, and the bottom of the bottom plate 76 is fixedly connected to an arc-shaped traction plate 77.

[0032] An external thread is machined on the upper section of a threaded shaft 73, which precisely mates with the internal thread fixed in an internal threaded cylinder 72, thus threadedly connecting it to the inside of the internal threaded cylinder 72. This means that the threaded shaft 73 can be screwed in or out relative to the internal threaded cylinder 72. At the bottom end of the threaded shaft 73, a base plate 76 is fixedly connected via a threaded connection, welding, or integral molding. This base plate 76 is typically a circular or square flat plate. At the bottom of the base plate 76, the final actuating component—an arc-shaped traction plate 77—is fixedly connected. This arc-shaped traction plate 77 is made of medical-grade stainless steel or titanium alloy, and its shape is designed to conform to the surface of the lung lobe with a gentle curve and smooth edges, used to gently pry open or hook lung tissue to achieve the traction function. The basic transmission principle is as follows: when the threaded shaft 73 rotates within the internal threaded cylinder 72, due to the gravity of the bottom plate 76 and the arc-shaped traction plate 77, as well as any possible guiding constraints, the threaded shaft 73 itself does not undergo significant axial movement. Instead, it drives the internal threaded cylinder 72, along with the semi-circular limiting plate 71, to produce a slight oscillation. More importantly, this threaded connection constitutes an adjustment fulcrum. Combined with the limiting structure in subsequent claims, the angle of the entire arc-shaped traction plate 77 is actually finely adjusted and locked through the relative rotation of the threaded shaft 73 and the internal threaded cylinder 72. Simultaneously, the arc-shaped traction plate 77 can oscillate at large angles around this connection point to adapt to the tissue.

[0033] The top of the threaded shaft 73 is fixedly connected to a fan-shaped knob 74, which has several circumferentially distributed through slots. The top of the semi-circular limiting plate 71 is provided with a hole slot, and a positioning pin 75 is inserted into the hole slot and one of the through slots. An arc-shaped limiting plate 78 is fixedly connected to the top of the bottom plate 76, and the inner wall of the arc-shaped limiting plate 78 is attached to the outer circumferential surface of the semi-circular limiting plate 71.

[0034] For ease of operation, a fan-shaped knob 74 is fixedly connected to the top of the threaded shaft 73, its shape facilitating the doctor's gripping and rotation. To achieve angle locking, several evenly distributed through slots or holes are machined along the circumference of the edge area of ​​the fan-shaped knob 74. Simultaneously, a corresponding slot is machined at the top edge of the fixed semi-circular limiting plate 71. When the doctor fine-tunes the relative angle between the threaded shaft 73 and the internal threaded cylinder 72 by rotating the fan-shaped knob 74 to adjust the traction plate angle to a satisfactory position, a through slot on the fan-shaped knob 74 will align with a slot on the semi-circular limiting plate 71. At this point, inserting a positioning pin 75, typically a spring pin or a manual pin, will fix the fan-shaped knob 74 and the semi-circular limiting plate 71 relative to each other, thereby locking the threaded pair and preventing the traction angle from spontaneously changing under force. Furthermore, to ensure stable trajectory and controllable range during traction plate swinging, an arc-shaped limiting plate 78 is fixedly connected vertically upwards to the top of the bottom plate 76. The curvature of the arc-shaped limiting plate 78 matches the outer circumference curvature of the semi-circular limiting plate 71, and its inner wall always slides in contact with the outer circumference of the semi-circular limiting plate 71. Thus, when the doctor manually swings the base plate 76 and the arc-shaped traction plate 77 for large-angle orientation, the arc-shaped limiting plate 78 acts like a guide rail, restricting its smooth swinging only along the arc-shaped trajectory of the semi-circular limiting plate 71. This ensures the stability of the movement and visually limits the maximum range of the swing angle.

[0035] Working principle: Before the operation begins, the connecting soft seat 1 of the device is first placed in a suitable position next to the surgical area on the patient's chest wall, and the flexible connecting strap 2 on it is used to wrap around the patient's body to fix it, thereby anchoring the entire device firmly next to the operating table. After the power is turned on, the doctor first adjusts the lighting system: push the guide frame 51 of the lighting component 5 by hand, so that it can easily rotate along the circular guide rail 4 through the internal guide wheel 52 to find the approximate direction of light incidence; then, bend the deformable connecting rod 56 to adjust the top lighting lamp 53 to the optimal illumination angle, and turn on the light through the switch module 55 on its top, providing clear and adjustable auxiliary lighting for the operating area within the single-hole incision.

[0036] When traction exposure of the lung lobe is required, the doctor begins operating the traction system. First, longitudinal depth adjustment is performed: rotating the knob 63 located on the side of the main frame 3 drives the rotating shaft 61 and its drive gear 62 to rotate. The drive gear 62 drives the meshing external gear ring 65 and the entire rotating disk 64 to rotate. The vortex guide grooves 66 on the upper and lower surfaces of the rotating disk 64, through their cooperation with the vortex guide blocks 68 on the displacement slider 67, convert the rotational motion into precise linear motion of the displacement slider 67. The displacement slider 67 slides smoothly within the grooves of the main frame 3 via the limiting blocks 69 above and below it, thereby driving the traction assembly 7 fixed at one end to move deeper into the thoracic cavity or outward, achieving coarse positioning of the initial working position of the traction head.

[0037] Subsequently, the traction angle is finely adjusted and locked: the surgeon can directly grasp and swing the bottom plate 76 and its bottom arc-shaped traction plate 77. The arc-shaped limiting plate 78 will slide along the arc-shaped trajectory of the outer edge of the semi-circular limiting plate 71, thereby achieving a wide range and smooth orientation of the traction plate. After determining the approximate angle, the relative angle between the threaded shaft 73 and the internal threaded cylinder 72 is finely adjusted by pinching and rotating the fan-shaped knob 74 at the top of the threaded shaft 73, thereby precisely calibrating the final working angle of the traction plate. After adjusting to the optimal angle, the positioning pin 75 is inserted into the aligned slot of the semi-circular limiting plate 71 and the through slot of the fan-shaped knob 74 to achieve mechanical locking, ensuring that the angle remains stable under traction force. The entire process realizes multi-level, independent, and lockable precise control from device fixation and lighting assistance to traction position and angle, providing a stable, flexible, and ergonomic tissue exposure solution for lung surgery under single-port thoracoscopic surgery.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A traction and fixation device for single-port thoracoscopic lung surgery, comprising a connecting soft seat (1), wherein a flexible connecting strap (2) is provided on the connecting soft seat (1), characterized in that... ； The top of the connecting soft seat (1) is fixedly connected to the main frame (3), and the top of the main frame (3) is provided with a lighting component (5). The main frame (3) is slidably fitted with a synchronous displacement component (6) for traction and fixation. The synchronous displacement component (6) is rotatably installed on one end inside the main frame and is provided with a traction component (7) for traction angle adjustment.

2. The traction and fixation device for single-port thoracoscopic lung surgery according to claim 1, characterized in that, The top of the connecting soft seat (1) is provided with a circular guide rail (4), and a lighting component (5) is movably sleeved on the guide rail (4).

3. The traction and fixation device for single-port thoracoscopic lung surgery according to claim 2, characterized in that, The lighting component (5) consists of a guide frame (51), which is movably fitted on the outer circumferential surface of the guide rail (4). Two symmetrically arranged guide wheels (52) are rotatably installed on the inner wall of the guide frame (51). The guide wheels (52) are in contact with the inner wall of the guide rail (4). A deformable connecting rod (56) is fixedly connected to the top of the guide wheel (52). A lighting lamp (53) is installed at the top of the deformable connecting rod (56). A battery module (54) and a switchable module (55) are respectively provided on the top of the lighting lamp (53).

4. The traction and fixation device for single-port thoracoscopic lung surgery according to claim 1, characterized in that, The synchronous displacement component (6) is composed of a rotating shaft (61). A drive gear (62) is fixedly sleeved on the outer circumferential surface of the rotating shaft (61). The rotating shaft (61) is rotatably installed on one side of the main frame (3). A rotating disk (64) is rotatably installed inside the main frame (3). An external gear ring (65) is fixedly sleeved on the outer circumferential surface of the rotating disk (64). The external gear ring (65) meshes with the drive gear (62). A vortex guide groove (66) is provided on both the upper and lower surfaces of the rotating disk (64). A displacement slider (67) is movably sleeved on the outer shaft surface of the rotating disk (64). Two symmetrically arranged vortex guide blocks (68) are provided on the inner wall of the displacement slider (67). The vortex guide blocks (68) are inserted into the vortex guide groove (66).

5. The traction and fixation device for single-port thoracoscopic lung surgery according to claim 4, characterized in that, A knob (63) is fixedly connected to the top of the rotating shaft (61), and limit blocks (69) are provided on both the upper and lower surfaces of the displacement slider (67). The limit blocks (69) are slidably assembled inside the main frame (3).

6. The traction and fixation device for single-port thoracoscopic lung surgery according to claim 5, characterized in that, The traction assembly (7) is composed of a semi-circular limiting plate (71), which is fixedly connected to one end of the displacement slider (67). An internal threaded cylinder (72) is provided inside the center of the semi-circular limiting plate (71).

7. The traction and fixation device for single-port thoracoscopic lung surgery according to claim 6, characterized in that, The internal threaded cylinder (72) is internally threaded to a threaded shaft (73), and a bottom plate (76) is fixedly connected to the bottom of the threaded shaft (73). An arc-shaped traction plate (77) is fixedly connected to the bottom of the bottom plate (76).

8. The traction and fixation device for single-port thoracoscopic lung surgery according to claim 7, characterized in that, The top of the threaded shaft (73) is fixedly connected to a fan-shaped knob (74), and the fan-shaped knob (74) is provided with several circumferentially distributed through slots. The top of the semi-circular limiting plate (71) is provided with a hole slot, and a positioning pin (75) is inserted into the hole slot and one of the through slots. The top of the bottom plate (76) is fixedly connected to an arc-shaped limiting plate (78), and the inner wall of the arc-shaped limiting plate (78) is attached to the outer circumferential surface of the semi-circular limiting plate (71).

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