一种球关节线控锁止机构及医疗器械

Abstract

本实用新型公开了一种球关节线控锁止机构及医疗器械，涉及医用器械领域。该机构包括球关节、锁合组件、连接线以及弹性件，球关节包括相铰接设置的外球套与内球头；锁合组件包括固定件、第一啮合件、第二啮合件以及调节件。本申请通过调节件传动第二啮合件与第一啮合件啮合或退出啮合来限位或释放连接线，从而锁定或解除内球头与外球套的相对角度，其能够避免因外力变化或摩擦磨损导致的松动问题，锁止强度更稳定，为医疗器械前端执行端提供可靠支撑，提高手术操作精准性；利用三根以上的连接线连接内球头和第一啮合件，均匀地传递作用力，保证内球头在各方向上的转动和锁止效果，弹性件有助于保持连接线处于张紧状态，提高锁止机构的稳定性。

Claims

1. A ball joint wire control locking mechanism, characterized by, include: The ball joint includes an outer ball sleeve (101) and an inner ball head (102) that are hinged together; The locking assembly includes a fixing member (201), a first engaging member (202), a second engaging member (203), and an adjusting member (204); the fixing member (201) is fixedly connected to the outer ball sleeve (101), the first engaging member (202) is movably disposed on the fixing member (201), the second engaging member (203) is movably mounted on the fixing member (201), and the adjusting member (204) and the second engaging member (203) are kinetically connected; At least three connecting lines are spaced apart. One end of each connecting line is fixedly connected to the inner ball head (102), and the other end is fixedly connected to the first engaging member (202). The connecting lines are slidably inserted into the outer ball sleeve (101). A set of the first engaging member (202) and the second engaging member (203) are provided corresponding to one connecting line. And an elastic element (206), one end of which elastically abuts against the first engaging element (202), and the other end of which is connected to the outer ball sleeve (101); the elastic element (206) is adapted to act on the first engaging element (202) to tighten the connecting line; When the inner ball head (102) rotates omnidirectionally relative to the outer ball sleeve (101), the inner ball head (102) pulls the connecting line and the first engaging member (202); When the adjusting member (204) drives the second engaging member (203) to engage with the first engaging member (202) or disengage from engagement, all the connecting lines are limited and fixed or disengaged to lock the relative angle between the inner ball head (102) and the outer ball sleeve (101) or to release the lock.

2. Ball joint drive-by-wire locking mechanism according to claim 1, characterized in that The first engaging member (202) includes a first engaging part (2021) and a wire fixing groove (2022). The first engaging part (2021) is disposed on the side wall of the first engaging member (202) facing the second engaging member (203). The wire fixing groove (2022) is fixedly connected to one end of the connecting wire. The second engaging member (203) is configured as a lever member. The second engaging member (203) includes a second engaging part (2031). The second engaging part (2031) is disposed on the side wall of the second engaging member (203) facing the first engaging member (202). The lever member is rotatably connected to the fixing member (201). One end of the lever member is connected to the adjusting member (204). The second engaging part (2031) is disposed at the other end of the lever member. The adjusting member (204) is rotatably disposed inside the outer ball sleeve (101); under the action of external force, the adjusting member (204) is adapted to rotate and drive the second engagement part (2031) of all the second engagement members (203) to engage or disengage with the first engagement part (2021) of the first engagement member (202); The elastic element (206) is configured as a compression spring.

3. Ball joint drive-by-wire locking mechanism according to claim 2, characterized in that The adjusting member (204) includes an adjusting ring (2041) and a sliding part (2042). The adjusting ring (2041) is rotatably disposed inside the outer ball sleeve (101). The sliding part (2042) is disposed on the inner wall of the adjusting member (204). The second engaging member (203) has a switching groove (2033) at one end near the adjusting member (204). The sliding part (2042) is slidably connected to the switching groove (2033). The connecting line and the elastic member (206) are spaced apart and pass through the adjusting ring (2041); and / or; The fixing member (201) is provided with a rotating shaft (2012), and the middle section of the second engaging member (203) is provided with an assembly hole (2032). The rotating shaft (2012) is rotatably installed in the assembly hole (2032).

4. The ball joint drive-by-wire lockup mechanism according to claim 2, characterized by The outer wall of the fastener (201) is provided with at least two stop protrusions (2013), and the outer ball sleeve (101) is provided with a stop groove (1014). The stop protrusions (2013) and the stop groove (1014) are installed in a corresponding manner; and / or; The outer wall of the fastener (201) is provided with at least three mounting grooves (2011), and all the mounting grooves (2011) are arranged in a ring along the axial direction of the fastener (201); the first engaging member (202) is slidably disposed in the mounting groove (2011), and the mounting groove (2011) extends in a direction parallel to the axial direction of the fastener (201).

5. The ball joint drive-by-wire lock mechanism of claim 1, wherein, The locking assembly further includes an adapter sleeve (205), one side of which is fixedly connected to the fixing member (201), and the other side is slidably connected to the second engaging member (203). The adapter sleeve (205) is installed on the side of the outer ball sleeve (101) away from the inner ball head (102). The first meshing member (202) includes a gear meshing part (2023), a wire binding groove (2024), and a torsion spring groove (2025). The gear meshing part (2023) is rotatably mounted on the outer wall of the fixing member (201). The wire binding groove (2024) is fixedly connected to one end of the connecting wire. The elastic member (206) is configured as a torsion spring. One end of the torsion spring is inserted and fixed on the fixing member (201), and the other end of the torsion spring is installed in the torsion spring groove (2025). The torsion spring passes through the inside of the gear meshing part (2023) and is coaxially arranged with the gear meshing part (2023). The second engaging member (203) includes a moving body (2034) and a second engaging part (2031), wherein the second engaging part (2031) is disposed on the side of the moving body (2034) facing the fixing member (201); The adjusting member (204) is fixedly connected to the second meshing member (203) or integrally formed; under the action of external force, the adjusting member (204) is adapted to move and drive the first meshing part (2021) of all the second meshing members (203) to mesh or disengage with the gear meshing part (2023) of the first meshing member (202).

6. Ball joint drive-by-wire locking mechanism according to claim 5, characterized in that The fastener (201) includes a connecting body (2015) and an assembly column (2016). The connecting body (2015) is configured as a rectangular column structure. At least three assembly columns (2016) are provided. The assembly columns (2016) are fixed to the outer wall surface of the connecting body (2015). The elastic element (206) and the first engaging element (202) are sleeved together on the assembly column (2016). The connecting body (2015) has a connecting column (2017) on the side facing the adapter sleeve (205). The adapter sleeve (205) has a connecting hole (2054). The connecting column (2017) is inserted and fixed into the connecting hole (2054).

7. The ball joint drive-by-wire lockup mechanism according to claim 5, characterized by The moving body (2034) is provided with a connecting hole (2035), and the adapter sleeve (205) is provided with a through hole (2052). At least three connecting holes (2035) and through holes (2052) are provided. The connecting holes (2035) and through holes (2052) are used for the connecting wire to slide through; and / or; The moving body (2034) is provided with a guide rod (2036) on the side facing the outer ball sleeve (101), and the outer ball sleeve (101) is provided with a guide hole (1016) on the side facing the moving body (2034). The guide rod (2036) is slidably disposed with the guide hole (1016); and / or; The adapter sleeve (205) is provided with a relief groove (2051), and at least three relief grooves (2051) and the second meshing part (2031) are provided. The relief groove (2051) is used to avoid the movement trajectory of the second meshing part (2031) towards the gear meshing part (2023); and / or; The adapter sleeve (205) is provided with a sliding groove (2053), and the adjusting member (204) is slidably disposed with the sliding groove (2053) and extends out of the sliding groove (2053).

8. Ball joint drive-by-wire locking mechanism according to any one of claims 1 to 7, characterized in that The outer ball sleeve (101) includes an outer ball portion (1011), a sleeve portion (1012), and a wire hole (1015). The inner ball head (102) includes an inner ball portion (1021), a neck sleeve portion (1022), and a wire fixing hole (1023). The inner ball portion (1021) is sleeved inside the outer ball portion (1011) and is ball-jointed with the outer ball portion (1011). The sleeve portion (1012) and the neck sleeve portion (1022) are coaxially arranged. The connecting wire slides through the wire hole (1015), and one end of the connecting wire is fixedly disposed in the wire fixing hole (1023).

9. Ball joint drive-by-wire locking mechanism according to claim 8, characterized in that The outer ball sleeve (101) is provided with a guide block (103), which is disposed between the inner ball head (102) and the fixing member (201); the guide block (103) is inserted into the interior of the outer ball sleeve (101), and the outer ball sleeve (101) is provided with an insertion hole (1017); the guide block (103) is provided with a wire passage hole (1031), and the connecting wire slides through the wire passage hole (1031); and / or; The inner ball portion (1021) has a hollow cavity, and the fixing member (201) has a central hole (2014) inside, which is connected to the hollow cavity.

10. A medical device, comprising: Includes the ball joint wire-controlled locking mechanism according to any one of claims 1-9.

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