Manual auxiliary positioning device for orthopedic puncture

Abstract

The utility model discloses an orthopedics department puncture manual auxiliary positioning device, which comprises a fixed part, the fixed part comprises a mounting base and a support frame, a position adjusting mechanism is arranged on the support frame in a sliding manner, the position adjusting mechanism comprises mounting blocks, guide posts, a driving lead screw, a moving block and a control part, the mounting blocks are mounted on two sides of the support frame, the guide posts are mounted on the mounting blocks, and the driving lead screw is mounted on the moving block; the moving block is installed on the guide column in a sliding mode, the driving lead screw is in threaded fit with the moving block, and the control part is connected with the driving lead screw and used for driving the driving lead screw to rotate and lock; the telescopic arms are arranged on the two sides of the moving block, and first rotating joints are arranged between the moving block and the telescopic arms; and the angle adjusting hand is rotationally connected with the telescopic arm through a second rotating joint, and a kirschner wire is mounted on the angle adjusting hand. The kirschner wire is fixed on a preset track, only adjustment operation needs to be carried out, and the posture does not need to be continuously maintained in a bare-handed mode. And the dependence on the personal stability of doctors is reduced. The problem that an existing kirschner wire is low in puncture accuracy is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning auxiliary structure field, concretely is a kind of orthopedics puncture manual auxiliary positioning device. BACKGROUND

[0002] In orthopedic surgery, often need to pass through a block of bone after the Kirschner wire percutaneous and soft tissue is drilled into another preset bone block fixation, in surgery, due to the length of Kirschner needle is longer, drill direction slightly deviates, the last drilling position will appear larger deviation, cannot reach the intended position, currently, when this happens, doctor will use tool in the incision of surgery to move Kirschner needle, make the tip of Kirschner needle deflect to preset direction, continue to drill in again;Since deviation is within a few millimeters in most cases, and Kirschner needle has good elasticity, so the accuracy of puncture is lower, for this purpose, we propose a kind of Kirschner needle puncture auxiliary positioning device for orthopedics. SUMMARY

[0003] The utility model discloses a kind of orthopedics puncture manual auxiliary positioning device, to solve the problem of low accuracy of existing Kirschner needle puncture.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of orthopedics puncture manual auxiliary positioning device, comprising: fixed part, including installation base and support frame, position adjusting mechanism is slidably arranged on support frame, the position adjusting mechanism includes installation block, guide column, drive screw, moving block and control part, the installation block is installed to support frame two sides, the guide column is installed on installation block, the moving block is slidably installed on guide column, the drive screw is threadedly cooperated with moving block, the control part is connected with drive screw, for driving drive screw rotation and locking;Telescopic arm, it is set to moving block two sides, first rotary joint is arranged between moving block and telescopic arm;Angle adjustment hand, it is rotatably connected with telescopic arm by second rotary joint, Kirschner needle is installed on angle adjustment hand.

[0005] As further improvement of the above technical solution:

[0006] The first rotary joint includes first fixed tooth disc and first movable tooth disc, the first fixed tooth disc and first movable tooth disc are engaged, the first fixed tooth disc is fixedly installed on moving block, first rotating shaft is rotatably arranged on the first fixed tooth disc, first reset spring is arranged between the first rotating shaft and the first fixed tooth disc, one end of the first rotating shaft is connected with the first movable tooth disc.

[0007] The second rotating joint includes a second fixed gear disc and a second movable gear disc, which mesh with each other. The second fixed gear disc is fixedly mounted on the telescopic arm. A second rotating shaft is provided on the second fixed gear disc, and a second return spring is provided between the second rotating shaft and the second movable gear disc. The second movable gear disc rotates relative to the second fixed gear disc.

[0008] The telescopic arm includes a fixed section and a movable section, which are slidably engaged with the fixed section. A helical locking pin is provided on the movable section.

[0009] A telescopic column is provided between the mounting base and the support frame.

[0010] The mounting base is equipped with clamping pliers.

[0011] The upper part of the movable block is provided with a rotary joint, and the first rotary joint is connected to the rotary joint.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device, as an independent mechanical support system, fixes the Kirschner wires on a predetermined trajectory, requiring only adjustments and eliminating the need for continuous manual posture maintenance. This reduces reliance on the surgeon's personal stability, offering significant advantages, especially for complex or time-consuming surgeries.

[0014] A multi-degree-of-freedom adjustment system is constructed through the coordinated action of a position adjustment mechanism, a telescopic arm, two rotary joints, and an angle adjustment hand. The control unit drives a lead screw to achieve precise horizontal translation of the telescopic arm; the longitudinal position is changed by adjusting the length of the telescopic arm; and the overall posture of the telescopic arm and the puncture angle of the Kirschner wire can be adjusted separately through the first and second rotary joints. This ensures that the Kirschner wire can be guided to the preset ideal position and angle, greatly improving the accuracy and adjustment efficiency of orthopedic puncture surgery and effectively avoiding deviations and risks caused by manual operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the position adjustment mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0019] Figure 5This is a schematic diagram of the first rotating joint structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the first rotating joint structure of this utility model.

[0021] Reference numerals: 1. Fixing part; 11. Mounting base; 12. Support frame; 2. Position adjustment mechanism; 21. Mounting block; 22. Guide column; 23. Drive screw; 24. Moving block; 25. Control part; 3. Telescopic arm; 31. Fixed section; 32. Moving section; 33. Helical locking pin; 4. Angle adjustment hand; 5. Kirschner wire; 61. First fixed gear plate; 62. First movable gear plate; 63. First rotating shaft; 64. First return spring; 71. Second fixed gear plate; 72. Second movable gear plate; 73. Second rotating shaft; 74. Second return spring. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 As shown, the manual auxiliary positioning device for orthopedic puncture in this embodiment includes:

[0027] The fixed part 1 has a position adjustment mechanism 2 that is slidably mounted on its upper part;

[0028] Telescopic arms 3 are mounted on both sides of the position adjustment mechanism 2;

[0029] Angle adjusting hand 4 is rotatably connected to telescopic arm 3, and Kirschner wires 5 are installed on angle adjusting hand 4. Kirschner wires 5 are inserted into the gripper of angle adjusting hand 4 and can move under the action of external force.

[0030] like Figure 2 and Figure 3 As shown, the fixed part 1 includes a mounting base 11 and a support frame 12. The position adjustment mechanism 2 is mounted on the support frame 12. The position adjustment mechanism 2 includes a mounting block 21, a guide post 22, a drive screw 23, a moving block 24, and a control part 25. The mounting block 21 is mounted on both sides of the support frame 12. The guide post 22 is mounted on the mounting block 21. The moving block 24 is slidably mounted on the guide post 22. The drive screw 23 is threadedly engaged with the moving block 24. The control part 25 is connected to the drive screw 23 and is used to drive the drive screw 23 to rotate and lock. The telescopic arm 3 includes a fixed section 31 and a moving section 32. The moving section 32 and the fixed section 31 are slidably engaged. A spiral locking pin 33 is provided on the moving section 32. The spiral locking pin 33 is threadedly engaged with the moving section 32. By rotating the spiral locking pin 33, the moving section 32 cannot slide, thus achieving a limit. A first rotating joint is provided on the moving block 24, and the first rotating joint is connected to the telescopic arm 3. The other end of the telescopic arm 3 is equipped with a second rotary joint, which is connected to the angle adjustment hand 4. The first rotary joint enables the rotation of the telescopic arm 3, and the second rotary joint enables the rotation of the angle adjustment hand 4. The toothed rotary joint, in conjunction with a return spring, allows for rapid angle adjustment and locking, ensuring the rigidity of each adjustment dimension after locking. This enables the device to respond quickly to positioning needs and provide reliable support during surgery, thereby optimizing the workflow of the entire orthopedic puncture surgery and improving the overall quality and efficiency of the procedure.

[0031] like Figure 4 and Figure 5 As shown, the first rotating joint includes a first fixed gear plate 61 and a first movable gear plate 62. The first fixed gear plate 61 and the first movable gear plate 62 mesh with each other. The first fixed gear plate 61 is fixedly mounted on the moving block 24. A first rotating shaft 63 is rotatably disposed on the first fixed gear plate 61. A first return spring 64 is disposed between the first rotating shaft 63 and the first fixed gear plate 61. The first rotating shaft 63 is fixedly connected to the first movable gear plate 62.

[0032] like Figure 6As shown, the second rotating joint includes a second fixed gear disc 71 and a second movable gear disc 72. The second fixed gear disc 71 and the second movable gear disc 72 mesh with each other. The second fixed gear disc 71 is fixedly mounted on the telescopic arm 3. A second rotating shaft 73 is provided on the second fixed gear disc 71. A second return spring 74 is provided between the second rotating shaft 73 and the second movable gear disc 72. The second movable gear disc 72 rotates relative to the second fixed gear disc 71. The rotational engagement here can be as follows: the second movable gear disc 72 and the second rotating shaft 73 are fixedly connected (rotation direction is fixed, axis is not fixed), and the second rotating shaft 73 and the second fixed gear disc 71 are rotatably engaged (usually using bearing installation to achieve rotation). The rotation of the second rotating shaft 73 drives the second movable gear disc 72 to rotate; alternatively, the second rotating shaft 73 and the second fixed gear disc 71 can be fixedly connected, and the second rotating shaft 73 and the second movable gear disc 72 are rotatably engaged, allowing direct rotation of the second movable gear disc 72 to achieve angle adjustment.

[0033] In some embodiments, a telescopic column is provided between the mounting base 11 and the support frame 12. This allows for height adjustment of the equipment. The telescopic column includes a fixed outer tube and an inner sliding column. The inner sliding column is connected to the support frame 12, and the fixed outer tube is connected to the mounting base 11. A locking screw is provided between the inner sliding column and the fixed outer tube to restrict the movement of the inner sliding column.

[0034] Mounting base 11 is typically used to fix the installation position. It can be fixed to the headboard or side of the bed, or other brackets. Therefore, the structure of mounting base 11 can be adjusted according to the actual installation position. Mounting base 11 usually includes a clamping plate structure, which is fixed to the installation position by bolts. In some usage scenarios, the device needs to be fixed to the spine. Therefore, mounting base 11 can be set as a clamping clamp to hold the clamp body on the spinal process.

[0035] To further improve the flexibility of use, in some embodiments, a rotary joint is provided on the upper part of the movable block 24, and a first rotary joint is connected to the rotary joint. This rotary joint structure can also adopt the same structure as the first rotary joint (not shown in the figure), so that the telescopic arm 3 can rotate around the fixed part 1.

[0036] In use, fix the mounting base 11 in the mounting position (using a clamp or clamping pliers), and adjust the device orientation, including:

[0037] Longitudinal position: The longitudinal position of the moving block 24 is changed by rotating the drive screw 23;

[0038] Height: The overall height can be adjusted using telescopic columns;

[0039] Horizontal rotation angle: Adjusted via the rotary joint structure;

[0040] Arm width: Pull the moving section 32 to move it, and after it moves to the preset position, it is fixed by the spiral locking pin 33;

[0041] Arm rotation angle: Pull the first movable toothed disk 62 outward to disengage the first movable toothed disk 62 from the first fixed toothed disk 61. At this time, it can rotate. After the rotation is completed, under the action of the first return spring 64, the first movable toothed disk 62 and the first fixed toothed disk 61 mesh, and the angle setting is completed.

[0042] Angle adjustment by hand 4: Pull the second movable gear 72 outward to disengage it from the second fixed gear 71. Rotation is then possible. After rotation, the second return spring 74 engages the second movable gear 72 with the second fixed gear 71, completing the angle setting. The Kirschner wire 5 can then be advanced.

[0043] This device constructs a multi-degree-of-freedom adjustment system through the coordinated action of a position adjustment mechanism, a telescopic arm, two rotary joints, and an angle adjustment hand. The control unit drives a lead screw to achieve precise horizontal translation of the telescopic arm; adjusting the length of the telescopic arm changes its longitudinal position; and the first and second rotary joints allow for independent adjustment of the overall posture of the telescopic arm and the puncture angle of the Kirschner wire. This multi-dimensional precision adjustment capability ensures that the Kirschner wire can be guided to the preset ideal position and angle, greatly improving the accuracy and efficiency of orthopedic puncture surgery and effectively avoiding deviations and risks associated with manual operation.

[0044] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A manual auxiliary positioning device for orthopedic puncture, characterized in that, include: The fixing part (1) includes a mounting base (11) and a support frame (12). A position adjustment mechanism (2) is slidably arranged on the support frame (12). The position adjustment mechanism (2) includes a mounting block (21), a guide column (22), a drive screw (23), a moving block (24), and a control part (25). The mounting block (21) is installed on both sides of the support frame (12). The guide column (22) is installed on the mounting block (21). The moving block (24) is slidably installed on the guide column (22). The drive screw (23) is threadedly engaged with the moving block (24). The control part (25) is connected to the drive screw (23) and is used to drive the drive screw (23) to rotate and lock. Telescopic arms (3) are provided on both sides of the movable block (24), and a first rotating joint is provided between the movable block (24) and the telescopic arms (3); Angle adjustment hand (4) is rotatably connected to telescopic arm (3) via a second rotating joint, and Kirschner wires (5) are installed on the angle adjustment hand (4).

2. The manual auxiliary positioning device for orthopedic puncture according to claim 1, characterized in that: The first rotating joint includes a first fixed gear plate (61) and a first movable gear plate (62). The first fixed gear plate (61) and the first movable gear plate (62) mesh with each other. The first fixed gear plate (61) is fixedly mounted on the moving block (24). A first rotating shaft (63) is rotatably disposed on the first fixed gear plate (61). A first return spring (64) is disposed between the first rotating shaft (63) and the first fixed gear plate (61). One end of the first rotating shaft (63) is connected to the first movable gear plate (62).

3. The manual auxiliary positioning device for orthopedic puncture according to claim 1, characterized in that: The second rotating joint includes a second fixed gear disc (71) and a second movable gear disc (72). The second fixed gear disc (71) and the second movable gear disc (72) mesh with each other. The second fixed gear disc (71) is fixedly mounted on the telescopic arm (3). A second rotating shaft (73) is provided on the second fixed gear disc (71). A second return spring (74) is provided between the second rotating shaft (73) and the second movable gear disc (72). The second movable gear disc (72) rotates relative to the second fixed gear disc (71).

4. The manual auxiliary positioning device for orthopedic puncture according to claim 1, characterized in that: The telescopic arm (3) includes a fixed section (31) and a movable section (32), the movable section (32) and the fixed section (31) are slidably engaged, and a spiral locking pin (33) is provided on the movable section (32).

5. The manual auxiliary positioning device for orthopedic puncture according to claim 1, characterized in that: A telescopic column is provided between the mounting base (11) and the support frame (12).

6. The manual auxiliary positioning device for orthopedic puncture according to claim 1, characterized in that: The mounting base (11) is equipped with clamps.

7. The manual auxiliary positioning device for orthopedic puncture according to any one of claims 1-6, characterized in that: The upper part of the movable block (24) is provided with a rotary joint, and the first rotary joint is connected to the rotary joint.

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