Pushing and ejecting device of marrow expanding device

Abstract

The utility model discloses a pushing device of a marrow expanding device, which relates to the technical field of medical auxiliary instruments and comprises an arc-shaped pushing head, a pushing handle and an adjusting piece. The adjusting piece comprises an adjusting disc and a limiting disc, and a locking piece is arranged on the adjusting disc; one end of the ejection handle is rotationally connected with the ejection disc, a limiting rod is movably arranged in the ejection handle, and the limiting rod moves towards the limiting disc under the action of external force, so that the limiting rod is clamped with the limiting disc, and the position between the ejection handle and the limiting disc is fixed; the contact area between the pushing head and the marrow expanding device or the femur is increased by arranging the arc-shaped pushing head, so that sliding is avoided when acting force is applied to the marrow expanding device or the femur through the pushing head, and the position of the pushing handle on the horizontal plane relative to the pushing head can be adjusted through the arranged adjusting disc. And meanwhile, the angle of the pushing handle relative to the pushing head in the vertical direction is adjusted in cooperation with the limiting disc, so that the position and angle of the pushing handle are adjustable, acting force can be applied to the pushing head from different directions, and operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically to a bone marrow expander pushing device. Background Technology

[0002] During medullary reaming, the relatively long length of the reamer makes it prone to swaying, thus affecting the reaming process. Typically, a bone manipulator is used to push the reamer forward during reaming to assist it in advancing in the intended direction. However, because the reamer is cylindrical with a smooth, curved surface, while the tip of the bone manipulator is flat, the contact area between the manipulator and the reamer is small during the pushing process. This makes it easy for the manipulator to slip, losing its pushing effect. Similarly, during open reduction of the femur, the femur's surface is also curved, making it prone to slippage when pushed with a bone manipulator, preventing the application of force to achieve the desired pushing effect. Utility Model Content

[0003] The main purpose of this utility model is to provide a push-up device for a medullary reamer, which solves the problem that when using a bone manipulator to push up a medullary reamer or to reposition the femur, the bone manipulator is prone to slipping and cannot apply force to achieve the pushing effect.

[0004] To achieve the above objectives, this utility model provides a push-up device for a spinal tractor, comprising an arc-shaped push-up head and a push-up handle disposed on the push-up head; an adjusting component is provided between the push-up handle and the push-up head; the adjusting component includes an adjusting disc rotatably disposed on the push-up head and a limiting disc disposed on the adjusting disc; a locking component is provided on the adjusting disc; the locking component moves under the action of external force and engages with the push-up head to fix the position between the adjusting disc and the push-up head; one end of the push-up handle is rotatably connected to the push-up disc, and a limiting rod is movably disposed inside the push-up handle; the limiting rod moves toward the limiting disc under the action of external force and engages with the limiting disc to fix the position between the push-up handle and the limiting disc.

[0005] As a further improvement of this utility model, the inner arc surface of the push head is provided with an anti-slip coating, and the outer arc surface of the push head is provided with a rotating groove; the rotating groove is provided with first locking holes at intervals; the adjusting plate is rotatably installed in the rotating groove.

[0006] As a further improvement of this utility model, the adjusting plate is provided with a positioning hole; the locking member includes a locking pin movably disposed in the positioning hole.

[0007] As a further improvement of this utility model, the adjusting plate is provided with a rotating frame; the rotating frame is spaced apart on both sides of the limiting plate; the push handle is rotatably connected to the rotating frame.

[0008] As a further improvement of this utility model, the limiting plate is provided with second locking holes at intervals; the push handle is provided with a sliding cavity inside, and a sliding groove is provided on the outer wall of the push handle through the sliding cavity; a spring is provided in the sliding cavity; the limiting rod is movably installed in the sliding cavity, one end of the limiting rod is fixedly connected to the spring, and the other end passes through the end of the push handle and is located outside the sliding cavity; a push handle connected to the limiting rod is movably provided in the sliding groove.

[0009] The beneficial effects of this utility model are reflected in:

[0010] By designing an arc-shaped pusher head, the contact area with the reamer or femur is increased, thus preventing slippage when applying force to the reamer or femur through the pusher head. The adjustable disc can adjust the position of the pusher handle relative to the pusher head on the horizontal plane, and at the same time, it works with the limiting disc to adjust the angle of the pusher handle relative to the pusher head in the vertical direction. This makes the position and angle of the pusher handle adjustable, allowing force to be applied to the pusher head from different directions, making operation more convenient. Attached Figure Description

[0011] Figure 1 A schematic diagram of the overall structure of a bone expander pushing device;

[0012] Figure 2 A schematic diagram of the push handle structure of a push device for a bone expander;

[0013] Figure 3 A schematic diagram of the pusher head structure of a bone expander pusher device;

[0014] Figure 4 A type of bone expander pushing device Figure 2 Enlarged structural diagram at point A;

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Push head; 2. Push handle; 3. Adjusting component; 4. Adjusting disc; 5. Limiting disc; 6. Locking component; 601. Locking pin; 7. Limiting rod; 8. Anti-slip coating; 9. Rotary groove; 10. First locking hole; 11. Snap groove; 12. Snap ring; 13. Positioning hole; 14. Rotating frame; 15. Rotating shaft; 16. Crossbar; 17. Second locking hole; 18. Sliding cavity; 19. Sliding groove; 20. Spring; 21. Push handle. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] In one embodiment, see Figure 1 , 2 This utility model discloses a push-up device for a spinal cord expander, comprising an arc-shaped push-up head 1 and a push-up handle 2 disposed on the push-up head 1. An adjusting component 3 is provided between the push-up handle 2 and the push-up head 1. The adjusting component 3 includes an adjusting disc 4 rotatably disposed on the push-up head 1 and a limiting disc 5 disposed on the adjusting disc 4. A locking component 6 is provided on the adjusting disc 4. The locking component 6 moves under the action of external force and engages with the push-up head 1 to fix the position between the adjusting disc 4 and the push-up head 1. One end of the push-up handle 2 is rotatably connected to the push-up disc. A limiting rod 7 is movably disposed inside the push-up handle 2. The limiting rod 7 moves toward the limiting disc 5 under the action of external force and engages with the limiting disc 5 to fix the position between the push-up handle 2 and the limiting disc 5.

[0019] Further, see Figure 3 The inner arc surface of the push head 1 is provided with an anti-slip coating 8, and the outer arc surface of the push head 1 is provided with a rotating groove 9. The rotating groove 9 is provided with first locking holes 10 at intervals; the adjusting plate 4 is rotatably installed in the rotating groove 9.

[0020] Preferably, the pusher head 1 is elongated and the cross-section of the pusher head 1 is arc-shaped.

[0021] Preferably, the inner wall of the rotating groove 9 is provided with a slot 11, and the outer wall of the adjusting plate 4 is provided with a retaining ring 12, which is rotatably installed in the slot 11.

[0022] Further, see Figure 4 The adjusting plate 4 is provided with a positioning hole 13, and the locking component 6 includes a locking pin 601 that is movably disposed in the positioning hole 13.

[0023] Preferably, the positioning hole 13 is provided with an internal thread, and the outer wall of the locking post 601 is provided with an external thread, and the locking post 601 and the positioning hole 13 are connected by threads.

[0024] In the above configuration, by rotating the adjusting disc 4, the retaining ring 12 rotates within the retaining groove 11, thereby adjusting the position of the adjusting disc 4 within the rotating groove 9. During the rotation of the adjusting disc 4, the positioning hole 13 and the locking pin 601 rotate accordingly. After the position of the adjusting disc 4 is determined, the locking pin 601 is rotated into the first locking hole 10, thus fixing the position of the adjusting disc 4 relative to the rotating groove 9, i.e., the position of the push head 1. By having the inner arc surface on the push head 1 adhere to the outer wall of the reamer, the push head 1 is secured to the outer wall of the reamer, thereby increasing the contact area between the push head 1 and the reamer and preventing the push head 1 from sliding relative to the reamer.

[0025] Further, see Figure 4 The adjusting plate 4 is provided with a rotating frame 14, which is spaced apart on both sides of the limiting plate 5; the push handle 2 is rotatably connected to the rotating frame 14.

[0026] Preferably, the rotating frame 14 is provided with a rotating hole, and the height of the rotating frame 14 is greater than the height of the limiting disk 5.

[0027] Preferably, one end of the push handle 2 is provided with a rotating shaft 15 located in the rotating hole, and the other end is provided with a crossbar 16.

[0028] Further, see Figure 4 The limiting plate 5 is provided with second locking holes 17 at intervals; the push handle 2 is provided with a sliding cavity 18 inside, and a sliding groove 19 is provided on the outer wall of the push handle 2 through the sliding cavity 18; a spring 20 is provided in the sliding cavity 18; the limiting rod 7 is movably installed in the sliding cavity 18, one end of the limiting rod 7 is fixedly connected to the spring 20, and the other end passes through the end of the push handle 2 located outside the sliding cavity 18; a push handle 21 connected to the limiting rod 7 is movably provided in the sliding groove 19.

[0029] Preferably, the limiting plate 5 is semi-circular, with the arc end of the limiting plate 5 far away from the adjusting plate 4, and the second locking hole 17 is provided on the end face of the arc end of the limiting plate 5.

[0030] Preferably, the push handle 2 is a hollow cylinder, and the sliding groove 19 is opened along the radial direction of the push handle 2.

[0031] Preferably, the end of the spring 20 away from the limiting rod 7 is fixedly connected to the inner wall of the sliding cavity 18.

[0032] In the above configuration, by rotating the push handle 2 along the rotating frame 14, the angle of the push handle 2 relative to the rotating frame 14 can be adjusted, that is, the angle of the push handle 2 relative to the push head 1 can be adjusted, so as to adapt to applying force to the push head 1 by pushing the push handle 2 from different directions. When pushing the femur, the position of the push handle 2 relative to the push head 1 in the horizontal direction and the angle in the vertical direction can be adjusted in conjunction with the rotation of the adjusting plate 4, so as to facilitate operation.

[0033] When adjusting the angle of the push handle 2 relative to the adjusting plate 4, the push handle 21 is moved upward, causing the limiting rod 7 to move into the sliding cavity 18. The spring 20 is compressed. After the push handle 2 is rotated and moves relative to the adjusting plate 4 and the position is determined, the push handle 21 is released. Under the action of the spring 20, the limiting rod 7 is pushed out of the sliding cavity 18 and locked in the second locking hole 17, thereby fixing the angle of the push rod relative to the limiting plate 5.

[0034] In this embodiment, by using the pusher head 1 to abut against the reamer or femur, the force is applied to the pusher handle 2 and transmitted to the pusher head 1, thereby assisting the reamer in expanding the medulla or pushing the femur to move and reposition. By adjusting the pusher handle 2 to rotate horizontally and vertically relative to the adjustment disc 4, the position of the pusher handle 2 can be adjusted, which facilitates the application of force without obstructing the operation.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A broach pusher device, characterized by, The utility model provides an arc push head (1), the push handle (2) of setting on push head (1), the adjusting piece (3) between push handle (2) and push head (1) is equipped with, the adjusting piece (3) includes the adjusting disc (4) of rotation setting on push head (1), the limiting disc (5) of setting on adjusting disc (4), the adjusting disc (4) is equipped with locking part (6), locking part (6) under the action of external force moves, further with push head (1) and connects to make the position fixed between adjusting disc (4) and push head (1), one end of push handle (2) is connected with push disc rotation, and the movable setting limiting rod (7) in push handle (2), limiting rod (7) under the action of external force moves towards limiting disc (5), further make limiting rod (7) with limiting disc (5) and connect to make the position fixed between push handle (2) and limiting disc (5).

2. The broach pusher device of claim 1, wherein: The inner arc surface of push head (1) is equipped with antiskid coating (8), and the outer arc surface of push head (1) is equipped with rotation groove (9), first locking hole (10) is equipped at interval in rotation groove (9), adjusting disc (4) rotation is installed in rotation groove (9).

3. The broach pusher device of claim 2, wherein: The adjusting disc (4) is equipped with positioning hole (13), and the locking part (6) includes the locking column (601) of movable setting in positioning hole (13).

4. The broach pusher device of claim 3, wherein: The adjusting disc (4) is equipped with rotating frame (14), and rotating frame (14) is set at interval at the both sides of limiting disc (5), and push handle (2) is connected with rotating frame (14) rotation.

5. The broach pusher device of claim 4, wherein: The limiting disc (5) is equipped with second locking hole (17) at interval, the inside of push handle (2) is equipped with sliding cavity (18), and the outer wall of push handle (2) is equipped with sliding slot (19) of penetrating sliding cavity (18), spring (20) is equipped in sliding cavity (18), limiting rod (7) is movably installed in sliding cavity (18), one end of limiting rod (7) is fixedly connected with spring (20), and the other end penetrates the end of push handle (2) and is located outside sliding cavity (18), sliding slot (19) is movably equipped with push handle (21) connected with limiting rod (7).

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