Cantilever locking device of orthopedic traction frame

Abstract

The utility model discloses a cantilever locking device of an orthopedic traction frame and belongs to the technical field of medical instruments. Which comprises a first fixed part and a second fixed part which are mutually fixed, two mutually perpendicular cantilevers are respectively fixed in the first fixed part and the second fixed part, and is characterized in that the second fixed part comprises a fixed frame (4) and a movable frame (11), the fixed frame (4) is rotatably connected with the movable frame (11), the fixed frame (4) and the movable frame (11) are in butt joint to form a closed ring, and the movable frame (11) is in butt joint with the fixed frame (4). And the closed part and the rotary connection part of the fixed frame (4) and the movable frame (11) are positioned at the opposite angles of the closed ring. According to the cantilever locking device of the orthopedic traction frame, the second fixing part is designed to be open, the cantilever is convenient to disassemble, meanwhile, the closing position and the rotating connecting position are arranged in a diagonal mode, the clamping force applied to the cantilever can be increased during locking, and the cantilever is effectively prevented from moving after being locked.

Description

Technical Field

[0001] The invention discloses a cantilever locking device for an orthopedic traction frame, belonging to the technical field of medical devices. Background Art

[0002] The orthopedic traction frame is a common auxiliary equipment for orthopedics in hospitals. It is mainly used to assist doctors in implementing traction and other treatment methods. During surgery, the orthopedic traction frame can be connected to the operating table to support the patient's body during orthopedic lower limb traction surgery, and traction and reduction of the affected lower limb. During the operation, the C-arm is used to take intraoperative video and filming of the traction reduction site multiple times to confirm whether the reduction is accurate.

[0003] During surgery, patients often need traction in multiple positions such as side-lying, supine, prone, side-lying, lithotomy, and beach positions, and different patients have different body shapes, so orthopedic traction frames often need to be adjusted differently and fixed after adjustment. In the orthopedic traction frames of the prior art, the position that needs to be adjusted is generally composed of two mutually perpendicular cantilevers, and a locking device is provided at the junction of the two rod-shaped parts to achieve adjustment and locking after adjustment.

[0004] The structure of the locking device in the orthopedic traction frame of the prior art is shown in the following technical scheme: the "conversion seat" recorded in the Chinese utility model patent with application number 201520713983.3, application date September 16, 2015, and patent name "a new type of orthopedic bed traction frame". The "locking assembly" recorded in the Chinese invention patent with application number 201810447667.4, application date May 11, 2018, and patent name "orthopedic traction device". The "fixator" recorded in the Chinese utility model patent with application number 202021311680.6, application date July 7, 2020, and patent name "an orthopedic reduction traction frame". And the mechanism for connecting the "cantilever support assembly" and the "lower limb fixation assembly" in the Chinese utility model patent filed by the applicant on February 25, 2021, with application number 202120431875.2 and patent name "Orthopedic Lower Limb Traction System".

[0005] In addition to the above technical solutions, the locking device also includes structures such as "mouth" - shaped, C - shaped, and multi - sided annular shapes. However, in the prior art including the above structures, there are still the following problems: (1) Disassembly is relatively inconvenient, mainly reflected in structures such as the "mouth" - shaped and multi - sided annular shapes. When disassembling the cantilever, it is often necessary to move the disassembled cantilever along the locking device to its end and then remove it. In a relatively narrow space, the implementation is difficult. (2) The locking is unreliable. It is mainly reflected in the C - shaped locking device. Although the C - shaped locking device is convenient for disassembly, when locking, it only locks through the pressure on one side, and the locking device does not fit well with the surface of the cantilever. When the traction force during the operation is large, it is easy to cause the cantilever to move. Utility Model Content

[0006] The technical problem to be solved by the present utility model is: overcoming the deficiencies of the prior art, providing a cantilever locking device for an orthopedic traction frame that facilitates the disassembly of the cantilever by adopting an open design for the second fixing part, and at the same time, the closing part and the rotating connection part are arranged diagonally, which helps to increase the clamping force applied to the cantilever during locking and effectively avoid the movement of the cantilever after locking.

[0007] The technical solution adopted by the present utility model to solve its technical problem is: The cantilever locking device of the orthopedic traction frame includes a first fixing part and a second fixing part that are fixedly connected to each other. Two mutually perpendicular cantilevers are respectively fixed in the first fixing part and the second fixing part. It is characterized in that: The second fixing part includes a fixed frame and a movable frame. The fixed frame and the movable frame are rotatably connected. The fixed frame and the movable frame are butted to form a closed loop. The closing part and the rotating connection part of the fixed frame and the movable frame are located diagonally in the closed loop.

[0008] Preferably, the first fixing part is a fixed square tube, and one side surface of the fixed square tube is fixedly attached to the fixed frame.

[0009] Preferably, a square tube locking pin for locking the cantilever is obliquely arranged at one of the edges of the fixed square tube.

[0010] Preferably, a limiting mechanism is arranged at the closing part of the fixed frame and the movable frame.

[0011] Preferably, the limiting mechanism includes a limiting opening opened at the end of the fixed frame and a limiting platform arranged at the end of the movable frame. The limiting platform is clamped with the limiting opening when the movable frame and the fixed frame are closed.

[0012] Preferably, a fixed platform is vertically bent at the end of the fixed frame, and the limiting opening is opened in the middle of the fixed platform; a limiting platform is vertically bent at the end of the movable frame.

[0013] Preferably, a movable locking pin is provided at the limit platform, the movable locking pin passes through the limit platform and is threadedly connected to the limit platform, a movable frame locking handle is also provided at one end of the movable locking pin, and a locking port opposite to the movable locking pin is also provided on the surface of the fixed frame.

[0014] Preferably, the square tube locking pin passes through the fixed square tube and is threadedly connected to the fixed square tube, and a square tube locking handle is also provided at one end of the square tube locking pin.

[0015] Preferably, fixed gaskets are respectively arranged on the two inner surfaces of the movable frame, and a movable gasket is arranged on the inner surface of the fixed frame close to the pin shaft.

[0016] Preferably, the fixed gasket is bent vertically at one end close to the fixed platform to form a fixed gasket bending portion, and the movable gasket is bent at one end away from the rotating connection to form a movable gasket bending portion, and the movable gasket bending portion is opposite to the fixed gasket bending portion as the movable frame is closed.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] In the cantilever locking device of the orthopedic traction frame, the second fixing part is designed to be open, which facilitates the disassembly of the cantilever. At the same time, the closed part and the rotating connection are arranged diagonally, which helps to increase the clamping force applied to the cantilever during locking and effectively prevent the cantilever from moving after locking.

[0019] Compared with the open type of the traditional C-mouth structure, the cantilever locking device of the orthopedic traction frame only locks from one side, and its locking is more reliable.

[0020] By providing a limiting mechanism, after the fixed frame and the movable frame are closed to form a closed loop with the second fixing portion, the limiting platform at the movable frame is inserted into the limiting opening of the fixed frame, effectively preventing the fixed frame and the movable frame from interlacing after closing.

[0021] The movable gasket and the fixed gasket are both made of carbon fiber. When the cantilever in the second fixed part is made of carbon fiber, damage to the cantilever can be effectively avoided.

[0022] The fixed gasket is bent vertically at one end close to the fixed platform to form a fixed gasket bending portion that is close to the inner side of the fixed platform. The movable gasket is bent at one end away from the pin shaft to form a movable gasket bending portion. After the movable gasket and the fixed gasket are connected, the fixed gasket bending portion and the movable gasket bending portion form a gasket group relative to each other, which cooperates with the movable gaskets and fixed gaskets on the other three sides of the inner ring to form a gasket closed loop, thereby realizing the padding of the entire circle of the cantilever. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the axonometric view of the cantilever locking device of the orthopedic traction frame.

[0024] Figure 2 This is a front view of the cantilever locking device of the orthopedic traction frame.

[0025] Wherein: 1, square tube locking handle 2, fixed square tube 3, fixed gasket 4, fixed frame 5, locking mouth 6, limiting mouth 7, fixed platform 8, movable locking pin 9, movable frame locking handle 10, limiting platform 11, movable frame 12, movable gasket 13, pin shaft 14, fixed gasket bending part 15, movable gasket bending part 16, square tube locking pin. DETAILED DESCRIPTION

[0026] Figure 1~2 It is the best embodiment of the utility model, and the following Figure 1~2 The utility model is further described.

[0027] like Figure 1~2 As shown, a cantilever locking device of an orthopedic traction frame (hereinafter referred to as the cantilever locking device) includes a first fixing part and a second fixing part, and fixing spaces for placing the cantilever are respectively arranged in the first fixing part and the second fixing part, and the arrangement directions of the fixing spaces in the first fixing part and the second fixing part are perpendicular to each other.

[0028] The first fixing part is a fixed square tube 2, which is a closed-loop structure, and one side of the fixed square tube 2 is fitted and fixed to the second fixing part. A square tube locking handle 1 is provided on one side of the fixed square tube 2, and a square tube locking pin 16 is vertically fixed at one end of the square tube locking handle 1. The square tube locking pin 16 is tilted from one of the ridges on the outside of the fixed square tube 2 to enter the inside of the fixed square tube 2. The square tube locking pin 16 is threadedly connected to the fixed square tube 2. By rotating the square tube locking handle 1, the distance of the square tube locking pin 16 entering the fixed square tube 2 is adjusted to achieve the fixation of the cantilever in the fixed square tube 2.

[0029] The second fixed part includes a fixed frame 4 and a movable frame 11 which are arranged opposite to each other, one end of which is hinged by a pin shaft 13, and the fixed frame 4 and the movable frame 11 are opened and closed by the pin shaft 13 to form an opening of the second fixed part, and the fixed square tube 2 is fixed to the back side of the fixed frame 4. Both the fixed frame 4 and the movable frame 11 are "L" shaped, and one end of the fixed frame 4 and the movable frame 11 hinged by the pin shaft 13 is a respective hinged end, and the other end is a respective open end.

[0030] The fixed frame 4 is bent vertically at its open end to form a fixed platform 7, and a limiting opening 6 is provided in the middle of the fixed platform 7. The movable frame 11 is bent vertically at its open end to form a limiting platform 10. After the fixed frame 4 and the movable frame 11 are closed to form a closed loop, the limiting platform 10 at the movable frame 11 is inserted into the limiting opening 6 of the fixed frame 4, effectively preventing the fixed frame 4 and the movable frame 11 from interlacing after closing.

[0031] A movable locking pin 8 is arranged on the outer side of the limit platform 10 of the movable frame 11, and the movable locking pin 8 passes through the limit platform 10 and is threadedly connected to the limit platform 10. A locking opening 5 is opened on the surface of the fixed frame 4, and the locking opening 5 is a blind hole. After the fixed frame 4 and the movable frame 11 are closed, the end of the movable locking pin 8 faces the locking opening 5, and a movable frame locking handle 9 is vertically fixed to one end of the movable locking pin 8. By rotating the movable frame locking handle 9, the movable locking pin 8 enters and exits the locking opening 5, thereby realizing the locking or opening of the second fixed part.

[0032] Fixed gaskets 3 are respectively arranged on the two surfaces inside the movable frame 11, and a movable gasket 12 is arranged on the surface of the inner side of the fixed frame 4 close to the pin shaft 13. After the fixed frame 4 and the movable frame 11 are closed, the movable gasket 12 and the fixed gasket 3 are connected to form a surround in the inner circle of the second fixed part. The movable gasket 12 and the fixed gasket 3 are both made of carbon fiber material. When the cantilever in the second fixed part is made of carbon fiber material, damage to the cantilever is effectively avoided.

[0033] The end of the fixed gasket 3 close to the fixed platform 7 is bent vertically to form a fixed gasket bending portion 14 that is close to the inner side of the fixed platform 7. The end of the movable gasket 12 away from the pin shaft 13 is bent to form a movable gasket bending portion 15. After the movable gasket 12 and the fixed gasket 3 are connected, the fixed gasket bending portion 14 and the movable gasket bending portion 15 form a gasket group relative to each other, which cooperates with the movable gaskets 12 and the fixed gaskets 3 on the other three sides of the inner ring to form a gasket closed loop, thereby realizing the padding of the entire cantilever circle.

[0034] The specific working process and working principle are as follows:

[0035] Two mutually perpendicular cantilevers in the orthopedic traction frame are fixed by the cantilever locking device, wherein one of the cantilevers passes through the fixed square tube 2 and is fixed by the square tube locking pin 16 after rotating the square tube locking handle 1.

[0036] After the fixed frame 4 and the movable frame 11 are opened, the second cantilever is placed therein. After adjusting the position, the movable frame 11 is rotated to dock with the fixed frame 4 to form a closed loop. At this time, the limit platform 10 is inserted into the limit opening 6, and the movable locking pin 8 is opposite to the locking opening 5. By rotating the movable frame locking handle 9, the movable locking pin 8 is inserted into the locking opening 5 to achieve locking of the second fixed part.

[0037] When disassembly is required, the fixed frame 4 and the movable frame 11 are opened by rotating the movable frame locking handle 9, and the second cantilever can be directly taken out at this time. By rotating the square tube locking handle 1, the cantilever fixing device can be separated from the first cantilever.

[0038] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A cantilever locking device for an orthopedic traction frame, comprising a first fixing portion and a second fixing portion fixed to each other, wherein two cantilevers perpendicular to each other are fixed in the first fixing portion and the second fixing portion, respectively, and characterized in that: The second fixed portion comprises a fixed frame (4) and a movable frame (11), the fixed frame (4) and the movable frame (11) are rotatably connected, the fixed frame (4) and the movable frame (11) are butted together to form a closed loop, and the closed portion of the fixed frame (4) and the movable frame (11) and their rotatably connected portion are located at opposite corners of the closed loop.

2. The cantilever locking device of the orthopedic traction frame according to claim 1, characterized in that: The first fixing portion is a fixing square tube (2), and one side surface of the fixing square tube (2) is fitted and fixed to the fixing frame (4).

3. The cantilever locking device of the orthopedic traction frame according to claim 2, characterized in that: A square tube locking pin (16) for locking the cantilever is obliquely arranged at one of the ridges of the fixed square tube (2).

4. The cantilever locking device of the orthopedic traction frame according to claim 1, characterized in that: A limiting mechanism is provided at the closing position of the fixed frame (4) and the movable frame (11).

5. The cantilever locking device of the orthopedic traction frame according to claim 4, characterized in that: The limiting mechanism comprises a limiting opening (6) formed at the end of the fixed frame (4), and a limiting platform (10) arranged at the end of the movable frame (11); the limiting platform (10) is engaged with the limiting opening (6) when the movable frame (11) and the fixed frame (4) are closed.

6. The cantilever locking device of the orthopedic traction frame according to claim 5, characterized in that: The end of the fixed frame (4) is bent vertically to form a fixed platform (7), and the limiting opening (6) is opened in the middle of the fixed platform (7); the end of the movable frame (11) is bent vertically to form a limiting platform (10).

7. The cantilever locking device of the orthopedic traction frame according to claim 5 or 6, characterized in that: A movable locking pin (8) is provided at the limit platform (10), the movable locking pin (8) passes through the limit platform (10) and is threadedly connected to the limit platform (10), a movable frame locking handle (9) is provided at one end of the movable locking pin (8), and a locking opening (5) opposite to the movable locking pin (8) is provided on the surface of the fixed frame (4).

8. The cantilever locking device of the orthopedic traction frame according to claim 3, characterized in that: The square tube locking pin (16) passes through the fixed square tube (2) and is threadedly connected to the fixed square tube (2). A square tube locking handle (1) is also provided at one end of the square tube locking pin (16).

9. The cantilever locking device of the orthopedic traction frame according to claim 1, characterized in that: Fixed gaskets (3) are respectively arranged on two surfaces inside the movable frame (11), and a movable gasket (12) is arranged on a surface of the inner side of the fixed frame (4) close to the pin shaft (13). Both the fixed gasket (3) and the movable gasket (12) are made of carbon fiber.

10. The cantilever locking device of the orthopedic traction frame according to claim 9, characterized in that: One end of the fixed gasket (3) close to the fixed platform (7) is bent vertically to form a fixed gasket bent portion (14), and one end of the movable gasket (12) away from the rotating connection is bent to form a movable gasket bent portion (15). The movable gasket bent portion (15) is opposite to the fixed gasket bent portion (14) as the movable frame (11) is closed.

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