Knee surgery instrument combination device with positioning support

Abstract

The utility model belongs to surgical instrument technical field, and disclose a kind of knee joint surgical instrument combination device with positioning support, including positioning frame, the both ends of positioning frame are connected with top screw rod, one end of top screw rod is connected with positioning clamping plate, the top of positioning frame is symmetrically provided with connecting frame, the inner chamber of connecting frame is provided with adjusting screw rod, one end of connecting frame is connected with rotating rocker, rotating rocker is connected with adjusting screw rod, adjusting screw rod is connected with sliding seat, the top of sliding seat is fixed with mounting plate, symmetrically setting up contrast board on mounting plate, drive motor is installed on the side of contrast board, the utility model places device to operating bed by the positioning frame of character-shaped, rotating top screw rod drives positioning clamping plate to move, so that positioning clamping plate and the side of operating bed adhere to the positioning frame and carry out clamping limit position, realize the positioning of device, convenient operation.

Description

Technical Field

[0001] This utility model belongs to the field of surgical instrument technology, specifically a combination device for knee joint surgical instruments with a positioning bracket. Background Technology

[0002] In knee surgeries (such as artificial joint replacement and meniscus repair), leg positioning devices are crucial components for ensuring surgical precision. Existing leg positioning devices for knee surgery have complex fixation structures to the operating table, often requiring multiple sets of bolts or specialized clamps for step-by-step fixation, making it difficult to quickly achieve clamping and limiting. Furthermore, the leg fixation mechanism lacks flexibility in position adjustment, failing to adapt to the fore-and-aft position of the leg fixation mechanism and thus failing to meet the needs of patients with different body types. Additionally, leg angle adjustment largely relies on manual operation by medical staff, lacking a visual angle reference structure, making it prone to angle adjustment deviations and difficult to adapt to various knee surgery scenarios. This increases the workload for medical staff and may also affect surgical precision and the effectiveness of the device due to inaccurate positioning.

[0003] Therefore, a combination device for knee joint surgery with a positioning bracket is proposed to address the above problems. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a knee joint surgical instrument assembly with a positioning bracket. It features convenient clamping and positioning of the device on the operating table through the C-shaped positioning bracket in conjunction with the tightening screw and positioning clamp. It can also adapt to the leg length of patients of different heights and can precisely adjust the angle of the leg fixation plate. It is suitable for various knee joint surgeries and is easy to operate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a knee joint surgical instrument assembly with a positioning bracket, comprising a positioning frame, with tightening screws connected to both ends of the positioning frame, a positioning clamp connected to one end of the tightening screws, a connecting frame symmetrically arranged on the top of the positioning frame, an adjusting screw arranged in the inner cavity of the connecting frame, a rotating rocker connected to one end of the connecting frame, the rotating rocker connected to the adjusting screw, a sliding seat connected to the adjusting screw, a mounting plate fixed to the top of the sliding seat, reference plates symmetrically arranged on the mounting plate, a drive motor mounted on one side of the reference plate, and a leg fixing mechanism connected to the output shaft of the drive motor via a rotating rod, the leg fixing mechanism comprising a leg fixing plate, a popliteal pad, Velcro straps, and an auxiliary support assembly.

[0006] Preferably, the positioning frame is arranged in a U-shape, the positioning clamp is located on the side opposite to the tightening screw, and an anti-slip pad is provided on the side opposite to the positioning clamp.

[0007] Preferably, a first bevel gear is provided at one end of the rotating rocker arm located within the connecting frame, and a second bevel gear is provided at the end of the adjusting screw adjacent to the rotating rocker arm, with the first bevel gear and the second bevel gear meshing together.

[0008] Preferably, the bottom of the sliding seat is provided with a slider that matches the adjusting screw, and the sliding seat is connected to the adjusting screw through the slider.

[0009] Preferably, the reference plate is semi-circular and has angular scale markings.

[0010] Preferably, one end of the leg fixing plate is fixed to the rotating rod of the drive motor, the other end of the leg fixing plate is connected to the popliteal pad, the Velcro strap is provided on the leg fixing plate, and the auxiliary support assembly is provided at the bottom of the leg fixing plate.

[0011] Preferably, the hook and loop fastener includes a hook and loop loop side and a hook and loop hook side, and both sides are fixed to the two sides of the leg fixing plate respectively.

[0012] Preferably, the auxiliary support assembly includes a tilting frame, a support rod, and a limiting bolt. One end of the tilting frame is hinged to the bottom of the leg fixing plate, one end of the support rod is slidably connected inside the tilting frame, and the limiting bolt is threadedly connected to one side of the opening of the tilting frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses an inverted C-shaped positioning frame to place the device on the operating table. Rotating the tightening screw moves the positioning clamp, causing the positioning clamp to fit against the side of the operating table and clamp the positioning frame to limit its position, thus achieving the positioning of the device and facilitating operation.

[0015] 2. This utility model uses a rocker arm to drive the adjusting screw to rotate, so that the sliding seat moves on the adjusting screw via the slider, while driving the leg fixing mechanism to move back and forth. This can accommodate the leg length of patients of different heights and improve the adaptability of the device.

[0016] 3. This utility model uses a drive motor to rotate the leg fixation plate, and adjusts the angle of the leg fixation plate with the angle scale on the reference plate. It is suitable for various knee joint surgeries, and the auxiliary support component can provide auxiliary support for the leg fixation plate, improving the stability of the leg support during surgery. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the positioning frame structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the connecting frame of this utility model;

[0020] Figure 4 This is a schematic diagram of the leg fixing mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the auxiliary support component structure of this utility model.

[0022] In the diagram: 1. Positioning frame; 2. Tightening screw; 3. Positioning clamp; 4. Connecting frame; 5. Adjusting screw; 6. Rotating rocker arm; 7. Sliding seat; 8. Mounting plate; 9. Reference plate; 10. Drive motor;

[0023] 11. Leg fixation mechanism; 111. Leg fixation plate; 112. Popliteal pad; 113. Velcro strap; 114. Auxiliary support assembly; 115. Flip frame; 116. Support rod; 117. Limit bolt. Detailed Implementation

[0024] 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.

[0025] The following describes an embodiment of this utility model based on its overall structure.

[0026] like Figures 1 to 5As shown, this utility model provides a knee joint surgical instrument assembly with a positioning bracket, including a positioning frame 1. Both ends of the positioning frame 1 are connected to tightening screws 2, and one end of the tightening screws 2 is connected to a positioning clamp 3. A connecting frame 4 is symmetrically arranged on the top of the positioning frame 1. An adjusting screw 5 is provided inside the cavity of the connecting frame 4. Both ends of the adjusting screw 5 are mounted on the sidewall of the inner cavity of the connecting frame 4 via bearings, allowing the adjusting screw to rotate freely. One end of the connecting frame 4 is connected to a rotating rocker arm 6, which is connected to the adjusting screw 5. A sliding seat 7 is connected to the adjusting screw 5, and a mounting plate 8 is fixed to the top of the sliding seat 7. A control plate 9 is symmetrically arranged on the mounting plate 8. A drive motor 10 is installed on one side of the control plate 9. The output shaft of the drive motor 10 is connected to the leg fixation mechanism 11 through a rotating rod. The leg fixation mechanism 11 includes a leg fixation plate 111, a popliteal pad 112, a Velcro strap 113, and an auxiliary support component 114. The patient places his leg on the leg fixation plate 111, with the popliteal pad 112 fitting in place. The Velcro strap 113 is used to wrap around the leg and secure it tightly. The drive motor 10 is started, causing the leg fixation plate 111 to rotate around the rotating rod. The angle is adjusted to the required angle for the surgery by referring to the scale on the control plate 9.

[0027] In this embodiment, the positioning frame 1 is arranged in a U-shape, and the positioning clamp 3 is arranged on the side opposite to the tightening screw 2. An anti-slip pad is provided on the side opposite to the positioning clamp 3 to increase the friction between the positioning clamp 3 and the operating table and improve the limiting effect of the positioning frame 1.

[0028] The rocker arm 6 is equipped with a first bevel gear at one end inside the connecting frame 4, and the adjusting screw 5 is equipped with a second bevel gear at the end close to the rocker arm 6. The first bevel gear and the second bevel gear are meshed together. When the rocker arm 6 is rotated, the horizontal rotational force is converted into the longitudinal rotational force of the adjusting screw 5 through the bevel gear, which drives the sliding seat 7 to move axially along the adjusting screw 5.

[0029] The bottom of the sliding seat 7 is provided with a slider that matches the adjusting screw 5. The sliding seat 7 is connected to the adjusting screw 5 through the slider. The two sides of the slider are slidably connected to the inner wall of the connecting frame 4, which can guide the sliding direction of the slider.

[0030] The reference plate 9 is semi-circular and has angle scale markings. By matching the leg fixing plate 111 with the scale markings, the rotation angle of the leg fixing plate 111 can be read in real time, thus achieving precise angle adjustment.

[0031] One end of the leg fixing plate 111 is fixed to the rotating rod of the drive motor 10, and the other end of the leg fixing plate 111 is connected to the popliteal pad 112. The Velcro strap 113 is provided on the leg fixing plate 111, and the auxiliary support component 114 is provided at the bottom of the leg fixing plate 111. The surface of the leg fixing plate 111 is arc-shaped so as to conform to the curve of the leg.

[0032] The Velcro strap 113 includes a Velcro loop side and a Velcro hook side, and both sides are fixed to the two sides of the leg fixing plate 111 respectively. After wrapping the strap around the leg, press and stick it to fix it.

[0033] The auxiliary support assembly 114 includes a flipping frame 115, a support rod 116, and a limiting bolt 117. One end of the flipping frame 115 is hinged to the bottom of the leg fixing plate 111, and one end of the support rod 116 is slidably connected inside the flipping frame 115. The limiting bolt 117 is threadedly connected to one side of the opening of the flipping frame 115. The flipping frame 115, which is hinged to the bottom of the leg fixing plate 111, is flipped downwards, and the support rod 116 is pulled to slide along the inner cavity of the flipping frame 115 until the lower end of the support rod 116 contacts the positioning frame 1. Then, the limiting bolt 117 at the opening of the flipping frame 115 is tightened. The position is fixed by the limiting bolt 117 pressing against the support rod 116, forming a support for the lower part of the leg fixing plate 111, which further improves the stability of the leg fixing.

[0034] The working principle and procedure of a knee joint surgical instrument combination device with a positioning bracket: In use, the positioning bracket 1 is first fastened across the edge of the operating table. By rotating the tightening screws 2 at both ends of the positioning bracket 1, the positioning clamp 3 on the opposite side of the tightening screws 2 is pushed towards the side wall of the operating table. When the positioning clamp 3 is tightly fitted to the side wall of the operating table, the positioning bracket 1 is clamped and limited by friction. When supporting the patient's leg, to adjust the front-to-back position of the leg fixation mechanism 11 according to the patient's leg length, the rocker arm 6 at one end of the connecting frame 4 is rotated. Through the engagement of the bevel gear, the adjusting screw 5 is rotated, causing the sliding seat 7 to move axially along the adjusting screw 5 via the slider. This, in turn, causes the mounting plate 8 on the top of the sliding seat 7 and the leg fixation mechanism 11 on the mounting plate 8 to move back and forth until the leg fixation mechanism 11 matches the position of the patient's leg, improving the adaptability of the device. After completing the front-to-back position adjustment, the patient's leg is placed on the leg fixation plate 111 of the leg fixation mechanism 11. The leg is secured with Velcro straps 113, simultaneously ensuring the patient's popliteal fossa is aligned with the popliteal pad 112. To adjust the knee flexion / extension angle, the drive motor 10 is activated. The output shaft of the drive motor 10 drives the leg fixation mechanism 11 to rotate around the axis of the rotating rod via a rotating rod. Angle scale markings are engraved on the reference plate 9, allowing for precise angle adjustment by observing the relative position of the leg fixation mechanism 11 and the scale markings on the reference plate 9. This method is suitable for various knee surgeries and helps prevent leg sagging due to gravity during surgery. If the angle shifts, the auxiliary support assembly 114 can be unfolded, and the flipping frame 115 hinged to the bottom of the leg fixing plate 111 can be flipped downwards. The support rod 116 is pulled to slide along the inner cavity of the flipping frame 115 until the lower end of the support rod 116 contacts the positioning frame 1. Then, the limiting bolt 117 at the opening of the flipping frame 115 is tightened. The position is fixed by the limiting bolt 117 pressing against the support rod 116, forming a support for the lower part of the leg fixing plate 111, which further improves the stability of the leg fixing.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A knee joint surgical instrument assembly with a positioning bracket, comprising a positioning bracket (1), characterized in that: The positioning frame (1) is connected to a tightening screw (2) at both ends. One end of the tightening screw (2) is connected to a positioning clamp (3). A connecting frame (4) is symmetrically arranged on the top of the positioning frame (1). An adjusting screw (5) is arranged in the inner cavity of the connecting frame (4). A rotating rocker (6) is connected to one end of the connecting frame (4). The rotating rocker (6) is connected to the adjusting screw (5). A sliding seat (7) is connected to the adjusting screw (5). An mounting plate (8) is fixed on the top of the sliding seat (7). A reference plate (9) is symmetrically arranged on the mounting plate (8). A drive motor (10) is installed on one side of the reference plate (9). The output shaft of the drive motor (10) is connected to a leg fixing mechanism (11) through a rotating rod. The leg fixing mechanism (11) includes a leg fixing plate (111), a popliteal pad (112), a Velcro strap (113), and an auxiliary support component (114).

2. The knee joint surgical instrument assembly with positioning bracket according to claim 1, characterized in that: The positioning frame (1) is arranged in a U-shape, the positioning clamp (3) is arranged on the side opposite to the tightening screw (2), and the side opposite to the positioning clamp (3) is provided with an anti-slip pad.

3. The knee joint surgical instrument assembly with positioning bracket according to claim 2, characterized in that: The rocker arm (6) is provided with a first bevel gear at one end inside the connecting frame (4), and the adjusting screw (5) is provided with a second bevel gear at the end close to the rocker arm (6), and the first bevel gear and the second bevel gear are meshed together.

4. The knee joint surgical instrument assembly with positioning bracket according to claim 3, characterized in that: The bottom of the sliding seat (7) is provided with a slider that matches the adjusting screw (5), and the sliding seat (7) is connected to the adjusting screw (5) through the slider.

5. The knee joint surgical instrument assembly with positioning bracket according to claim 4, characterized in that: The reference plate (9) is semi-circular and has angle scale markings.

6. The knee joint surgical instrument assembly with positioning bracket according to claim 5, characterized in that: One end of the leg fixing plate (111) is fixed to the rotating rod of the drive motor (10), the other end of the leg fixing plate (111) is connected to the popliteal pad (112), the Velcro strap (113) is set on the leg fixing plate (111), and the auxiliary support assembly (114) is set at the bottom of the leg fixing plate (111).

7. The knee joint surgical instrument assembly with positioning bracket according to claim 6, characterized in that: The hook and loop fastener (113) includes a hook and loop loop side and a hook and loop hook side, and both sides are fixed to the two sides of the leg fixing plate (111).

8. The knee joint surgical instrument assembly with positioning bracket according to claim 7, characterized in that: The auxiliary support assembly (114) includes a tilting frame (115), a support rod (116), and a limiting bolt (117). One end of the tilting frame (115) is hinged to the bottom of the leg fixing plate (111), one end of the support rod (116) is slidably connected inside the tilting frame (115), and the limiting bolt (117) is threaded to one side of the opening of the tilting frame (115).

Images