Multidirectional adjustable joint device for minimally invasive surgery
By introducing a self-locking mechanism and an engagement adjustment mechanism into the universal joint device for minimally invasive surgery, the problems of fixation and accuracy caused by accidental contact with the device are solved, and multi-directional precise adjustment of the mounting plate is achieved, thereby improving the operational stability and efficiency of minimally invasive surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2026-04-03
AI Technical Summary
Existing minimally invasive surgical universal joint devices are prone to accidental rotation of the handle during surgery due to accidental contact, affecting the fixation and precision of adjustment, making it impossible to achieve accurate positioning, and affecting the surgical outcome.
A multi-directional adjustable joint device for minimally invasive surgery was designed. It adopts a first self-locking mechanism and a second self-locking mechanism. The self-locking position of the rotating cylinder is achieved through the cooperation of the handwheel and the return spring. The horizontal rotation and tilt angle adjustment of the mounting plate are achieved through the meshing mechanism of worm gear and gear, ensuring the stability and accuracy of the adjustment.
It effectively prevents rotation caused by accidental contact, enables precise multi-directional adjustment of the mounting plate, improves the stability and accuracy of surgical operations, and increases the efficiency of minimally invasive surgery.
Smart Images
Figure CN224070494U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical auxiliary device technology, and more specifically, it relates to a multi-directional adjustable joint device for minimally invasive surgery. Background Technology
[0002] With the development of medical technology, more and more surgeries are becoming minimally invasive. Minimally invasive surgery is surgery with minimal trauma. It refers to surgery performed using modern medical instruments and equipment such as laparoscopes and thoracoscopes. Currently, most invasive surgeries in the medical industry require the use of various frames to support various parts of the human body. Moreover, during the process of patients using various frames, medical staff usually use common support devices to stably fix the various frames.
[0003] In a prior art universal joint device, the device includes a lower body, on which an upper body is rotatably mounted in a horizontal plane via a bottom rotating body. A first gripper for locking the bottom rotating body is mounted on the lower body. A swing arm is rotatably mounted on the upper body in a vertical plane via an upper rotating body. A second gripper for locking the upper rotating body is mounted on the upper body. The two ends of the first gripper are connected by a first handwheel for controlling the tightness of the first gripper, and the two ends of the second gripper are connected by a second handwheel for controlling the tightness of the second gripper. The device can accommodate various angle adjustment needs through the coordination of horizontal and vertical plane rotation adjustment. Furthermore, locking the device requires only one hand to rotate either the first or second handle, greatly reducing the operational difficulty for medical personnel and thus improving surgical efficiency. However, during surgery, the handle is easily rotated due to accidental contact, affecting the stability of the adjustment. Secondly, effective and precise positioning adjustment cannot be performed during the rotation adjustment of the upper body and the swing arm, thus affecting the accuracy of angle adjustment and consequently the effectiveness of minimally invasive surgery. Utility Model Content
[0004] This invention addresses the technical problems existing in the prior art by providing a minimally invasive surgical multi-directional adjustable joint device.
[0005] To solve the above-mentioned technical problems, the present invention includes a base plate, a housing fixedly connected to the upper side wall of the base plate, a first self-locking mechanism inserted and rotatably connected to the front side wall of the housing, a rotation adjustment mechanism provided in the housing, one end of the first self-locking mechanism being fixedly connected to one end of the rotation adjustment mechanism, one end of the rotation adjustment mechanism penetrating the upper side wall of the housing and fixedly connected to an adjustment shell, a second self-locking mechanism inserted and rotatably connected to one side of the adjustment shell, an angle adjustment mechanism provided in the adjustment shell, one end of the second self-locking mechanism being fixedly connected to one end of the angle adjustment mechanism, an arc-shaped opening opened on the upper side wall of the adjustment shell, one end of the angle adjustment mechanism passing through the arc-shaped opening and fixedly connected to a mounting plate;
[0006] The first self-locking mechanism and the second self-locking mechanism have the same structure. The second self-locking mechanism includes a rotating cylinder inserted into and rotatably connected to one side of the adjusting shell. The inner end of the rotating cylinder is fixedly connected to one end of the angle adjusting mechanism. A push rod is inserted into and slidably connected to the outer end of the rotating cylinder. A handwheel is fixedly connected to the outer end of the push rod. A slider is fixedly connected to the inner end of the push rod. A return spring is fixedly connected between the slider and the inner wall of the rotating cylinder, and the return spring is sleeved on the outer side of the push rod.
[0007] Preferably, two symmetrically arranged L-shaped lock heads are fixedly connected to both sides of the slider, and sliding openings are provided on both sides of the rotating cylinder. The inner wall of the adjusting shell is provided with lock holes arranged at equal intervals around the rotating cylinder. One end of each of the two L-shaped lock heads passes through the two sliding openings and is inserted into the two corresponding lock holes.
[0008] Preferably, the rotary adjustment mechanism includes a worm gear fixedly connected to the inner end of the rotating drum in the first self-locking mechanism, a vertically arranged rotating rod rotatably connected to the inner bottom wall of the housing via a bearing seat, a worm wheel fixedly connected to the rotating rod and meshing with the worm gear, and the upper end of the rotating rod penetrating the upper side of the housing and fixedly connected to the adjustment shell.
[0009] Preferably, an annular slide rail is fixedly connected to the upper side wall of the housing, the center of the annular slide rail is consistent with the axis of the rotating rod, and two symmetrically arranged circular blocks are slidably connected to the inner wall of the annular slide rail. Support rods are fixedly connected to the upper ends of the two circular blocks, and the upper ends of the two support rods are fixedly connected to the adjusting shell.
[0010] Preferably, the angle adjustment mechanism includes a first gear fixedly connected to the inner end of the rotating drum in the second self-locking mechanism, a second gear meshing with the first gear is rotatably connected to the inner wall of the adjustment shell via a rotating shaft, a swing arm is fixedly connected to the upper side wall of the second gear, and the upper end of the swing arm passes through an arc-shaped opening and is fixedly connected to the mounting plate.
[0011] Preferably, the inner wall of the adjusting shell is rotatably connected to the side of the first gear away from the rotating cylinder via a rotating component.
[0012] Preferably, the inner walls on both sides of the sliding opening are slidably connected to the side walls on both sides of the L-shaped lock head.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This minimally invasive surgical multi-directional adjustable joint device features a first and a second self-locking mechanism. When adjustment is needed by rotating the drum, the handwheel is first pushed to move the slider fixed to the push rod. This pulls the return spring to extend and generate a contraction force until the L-shaped lock head is completely separated from the lock hole. At this point, the rotation of the drum is unrestricted. Then, the handwheel is rotated again to drive the drum to rotate for adjustment. When the handwheel is released, the elastic contraction force of the return spring causes the L-shaped lock head to return to its original position and insert into the lock hole, locking the rotation of the drum. This prevents rotation caused by accidental contact with the handwheel, achieving self-locking and more stable positioning.
[0015] Furthermore, this invention incorporates a rotation adjustment mechanism. When the first self-locking mechanism is rotated, it drives the worm gear to rotate. Since the worm gear meshes with the worm wheel, it in turn drives the adjustment shell, which is fixed to the rotating rod, to rotate, thereby achieving adjustment of the horizontal rotation angle of the mounting plate. An angle adjustment mechanism is also included. When the second self-locking mechanism is rotated, it drives the first gear to rotate. Since the first gear meshes with the second gear, it drives the rotating shaft to rotate, thereby driving the swing arm to swing, achieving adjustment of the tilt angle of the mounting plate. The adjustment is precise and stable, thus enabling multi-directional adjustment of the frame used in minimally invasive surgery. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;
[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of an embodiment of the adjusting shell of this utility model;
[0019] Figure 3 For the present utility model Figure 2 A magnified schematic diagram of the structure at point A;
[0020] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the housing of this utility model.
[0021] Explanation of symbols in the diagram:
[0022] 1. Base plate; 2. Housing; 3. Adjustment housing; 4. Arc-shaped opening; 5. Mounting plate; 6. Rotary cylinder; 7. Push rod; 8. Handwheel; 9. Slider; 10. Return spring; 11. L-shaped lock head; 12. Slide opening; 13. Lock hole; 14. Worm gear; 15. Rotating rod; 16. Worm wheel; 17. Circular slide rail; 18. Round block; 19. Support rod; 20. First gear; 21. Rotating shaft; 22. Second gear; 23. Swing arm. Detailed Implementation
[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0024] Please see Figure 1 , Figure 4 This utility model provides a multi-directional adjustable joint device for minimally invasive surgery. This device is used to fix and adjust the frame in multiple directions during minimally invasive surgery. It includes a base plate 1, which can be installed and fixed to the minimally invasive operating table. A housing 2 is fixedly connected to the upper side wall of the base plate 1. A first self-locking mechanism is inserted into and rotatably connected to the front side wall of the housing 2. A rotation adjustment mechanism is provided in the housing 2. One end of the first self-locking mechanism is fixedly connected to one end of the rotation adjustment mechanism. One end of the rotation adjustment mechanism passes through the upper side wall of the housing 2 and is fixedly connected to an adjustment shell 3. A second self-locking mechanism is inserted into and rotatably connected to one side of the adjustment shell 3. An angle adjustment mechanism is provided in the adjustment shell 3. One end of the second self-locking mechanism is fixedly connected to one end of the angle adjustment mechanism. An arc-shaped opening 4 is opened on the upper side wall of the adjustment shell 3. One end of the angle adjustment mechanism passes through the arc-shaped opening 4 and is fixedly connected to a mounting plate 5 for installation and fixation with the minimally invasive surgical frame.
[0025] The first self-locking mechanism and the second self-locking mechanism have the same structure. The second self-locking mechanism includes a rotating cylinder 6 inserted into one side of the adjusting shell 3 and rotatably connected thereto. The inner end of the rotating cylinder 6 is fixedly connected to one end of the angle adjusting mechanism. A push rod 7 is inserted into and slidably connected to the outer end of the rotating cylinder 6. A handwheel 8 is fixedly connected to the outer end of the push rod 7. A slider 9 is fixedly connected to the inner end of the push rod 7. A return spring 10 is fixedly connected between the slider 9 and the inner wall of the rotating cylinder 6, and the return spring 10 is sleeved on the outer side of the push rod 7.
[0026] Two symmetrically arranged L-shaped lock heads 11 are fixedly connected to both sides of the slider 9. Slide openings 12 are provided on both sides of the rotating cylinder 6. Lock holes 13 are provided at equal intervals around the rotating cylinder 6 on the inner wall of the adjusting shell 3. One end of each of the two L-shaped lock heads 11 passes through the two slide openings 12 and is inserted into the two corresponding lock holes 13.
[0027] In this embodiment, when the rotating drum 6 needs to be rotated for adjustment, the handwheel 8 is first pushed to move the slider 9 fixed to the push rod 7. At this time, the return spring 10 can be pulled to extend and generate a contraction force until the L-shaped lock head 11 is completely separated from the lock hole 13. At this time, the rotation of the rotating drum 6 is no longer restricted. Then, the handwheel 8 is rotated to drive the rotating drum 6 to rotate for adjustment. When the handwheel 8 is released, the elastic contraction force of the return spring 10 is used to reset the L-shaped lock head 11 and insert it into the lock hole 13, locking the rotation of the rotating drum 6. This can prevent rotation caused by accidentally touching the handwheel 8, achieve self-locking, and make the positioning more stable.
[0028] In this embodiment, as Figure 4 As shown, the rotary adjustment mechanism includes a worm gear 14 fixedly connected to the inner end of the rotating drum 6 in the first self-locking mechanism. The inner bottom wall of the housing 2 is rotatably connected to a vertically arranged rotating rod 15 through a bearing seat. A worm wheel 16 that meshes with the worm gear 14 is fixedly connected to the rotating rod 15. The upper end of the rotating rod 15 passes through the upper side of the housing 2 and is fixedly connected to the adjustment shell 3.
[0029] When the first self-locking mechanism is rotated, the worm gear 14 can be rotated. Since the worm gear 14 meshes with the worm wheel 16, it in turn drives the adjusting shell 3, which is fixed to the rotating rod 15, to rotate, thereby realizing the adjustment of the horizontal rotation angle of the mounting plate 5. The adjustment is precise and stable.
[0030] Specifically, such as Figure 1 As shown, an annular slide rail 17 is fixedly connected to the upper side wall of the housing 2. The center of the annular slide rail 17 is consistent with the axis of the rotating rod 15. Two symmetrically arranged circular blocks 18 are slidably connected to the inner wall of the annular slide rail 17. Support rods 19 are fixedly connected to the upper ends of the two circular blocks 18. The upper ends of the two support rods 19 are fixedly connected to the adjusting shell 3. When the adjusting shell 3 rotates, it can drive the circular blocks 18 fixed to the support rods 19 to slide in the annular slide rail 17, which can support and stabilize the rotation of the adjusting shell 3.
[0031] In this embodiment, as Figure 2As shown, the angle adjustment mechanism includes a first gear 20 fixedly connected to the inner end of the rotating cylinder 6 in the second self-locking mechanism. The inner wall of the adjustment shell 3 is rotatably connected to a second gear 22 that meshes with the first gear 20 via a rotating shaft 21. A swing arm 23 is fixedly connected to the upper side wall of the second gear 22. The upper end of the swing arm 23 passes through the arc-shaped opening 4 and is fixedly connected to the mounting plate 5. When the second self-locking mechanism is rotated, the first gear 20 can be driven to rotate. Since the first gear 20 meshes with the second gear 22, the rotating shaft 21 can be driven to rotate, thereby driving the swing arm 23 to swing, so as to realize the tilt angle adjustment of the mounting plate 5. The adjustment is precise and stable.
[0032] Furthermore, the inner wall of the adjusting shell 3 is rotatably connected to the side of the first gear 20 away from the rotating cylinder 6 via a rotating component, making the rotation of the first gear 20 more stable.
[0033] Furthermore, such as Figure 3 As shown, the inner walls on both sides of the sliding opening 12 are slidably connected to the side walls on both sides of the L-shaped lock head 11, making the displacement of the L-shaped lock head 11 more stable.
[0034] The working principle of this utility model is as follows:
[0035] When the rotating drum 6 needs to be rotated for adjustment, first push the handwheel 8 to move the slider 9 fixed to the push rod 7. At this time, the return spring 10 can be pulled to extend and generate a contraction force until the L-shaped lock head 11 is completely separated from the lock hole 13. At this time, the rotation of the rotating drum 6 is unrestricted. Then, turn the handwheel 8 to drive the rotating drum 6 to rotate for adjustment. When the handwheel 8 is released, the elastic contraction force of the return spring 10 will cause the L-shaped lock head 11 to return and insert into the lock hole 13, locking the rotation of the rotating drum 6. This can prevent rotation caused by accidentally touching the handwheel 8, achieve self-locking, and make the positioning more stable.
[0036] When the first self-locking mechanism is rotated, the worm gear 14 is driven to rotate. Since the worm gear 14 meshes with the worm wheel 16, it in turn drives the adjusting shell 3, which is fixed to the rotating rod 15, to rotate. This allows for precise and stable adjustment of the horizontal rotation angle of the mounting plate 5. When the second self-locking mechanism is rotated, the first gear 20 is driven to rotate. Since the first gear 20 meshes with the second gear 22, the rotating shaft 21 is driven to rotate, which in turn drives the swing arm 23 to swing. This allows for precise and stable adjustment of the tilt angle of the mounting plate 5, thereby enabling multi-directional adjustment of the frame used in minimally invasive surgery.
[0037] In the description of this utility model, it should be understood that terms such as “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A minimally invasive surgical multi-directional adjustable joint device, comprising a base plate, characterized in that, A housing is fixedly connected to the upper side wall of the base plate. A first self-locking mechanism is inserted into and rotatably connected to the front side wall of the housing. A rotation adjustment mechanism is provided in the housing. One end of the first self-locking mechanism is fixedly connected to one end of the rotation adjustment mechanism. One end of the rotation adjustment mechanism passes through the upper side wall of the housing and is fixedly connected to an adjustment shell. A second self-locking mechanism is inserted into and rotatably connected to one side of the adjustment shell. An angle adjustment mechanism is provided in the adjustment shell. One end of the second self-locking mechanism is fixedly connected to one end of the angle adjustment mechanism. An arc-shaped opening is provided on the upper side wall of the adjustment shell. One end of the angle adjustment mechanism passes through the arc-shaped opening and is fixedly connected to a mounting plate. The first self-locking mechanism and the second self-locking mechanism have the same structure. The second self-locking mechanism includes a rotating cylinder inserted into and rotatably connected to one side of the adjusting shell. The inner end of the rotating cylinder is fixedly connected to one end of the angle adjusting mechanism. A push rod is inserted into and slidably connected to the outer end of the rotating cylinder. A handwheel is fixedly connected to the outer end of the push rod. A slider is fixedly connected to the inner end of the push rod. A return spring is fixedly connected between the slider and the inner wall of the rotating cylinder, and the return spring is sleeved on the outer side of the push rod.
2. The minimally invasive surgical multi-directional adjustable joint device according to claim 1, characterized in that, Two symmetrically arranged L-shaped lock heads are fixedly connected to both sides of the slider. Slide openings are provided on both sides of the rotating cylinder. Lock holes with equal spacing are provided around the rotating cylinder on the inner wall of the adjusting shell. One end of each of the two L-shaped lock heads passes through the two slide openings and is inserted into the two corresponding lock holes.
3. The minimally invasive surgical multi-directional adjustable joint device according to claim 1, characterized in that, The rotary adjustment mechanism includes a worm gear fixedly connected to the inner end of the rotating drum in the first self-locking mechanism. A vertically arranged rotating rod is rotatably connected to the inner bottom wall of the housing through a bearing seat. A worm wheel that meshes with the worm gear is fixedly connected to the rotating rod. The upper end of the rotating rod passes through the upper side of the housing and is fixedly connected to the adjustment shell.
4. The minimally invasive surgical multi-directional adjustable joint device according to claim 3, characterized in that, An annular slide rail is fixedly connected to the upper side wall of the housing. The center of the annular slide rail is consistent with the axis of the rotating rod. Two symmetrically arranged circular blocks are slidably connected to the inner wall of the annular slide rail. Support rods are fixedly connected to the upper ends of the two circular blocks. The upper ends of the two support rods are fixedly connected to the adjusting shell.
5. The minimally invasive surgical multi-directional adjustable joint device according to claim 1, characterized in that, The angle adjustment mechanism includes a first gear fixedly connected to the inner end of the rotating drum in the second self-locking mechanism. The inner wall of the adjustment shell is rotatably connected to a second gear that meshes with the first gear via a rotating shaft. A swing arm is fixedly connected to the upper side wall of the second gear. The upper end of the swing arm passes through an arc-shaped opening and is fixedly connected to the mounting plate.
6. The minimally invasive surgical multi-directional adjustable joint device according to claim 5, characterized in that, The inner wall of the adjusting shell is rotatably connected to the side of the first gear away from the rotating cylinder via a rotating component.
7. The minimally invasive surgical multi-directional adjustable joint device according to claim 2, characterized in that, The inner walls on both sides of the sliding opening are slidably connected to the side walls on both sides of the L-shaped lock head.