An apparatus for immobilizing a limb
By designing a limb fixation mechanism and utilizing the cooperation of a rotating screw and a limiting groove, the limb trauma fixator achieves precise fixation at different positions, solving the problem of discomfort in limb fixation in existing technologies and improving fixation effect and patient comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 广州医科大学附属番禺中心医院(广州市番禺区中心医院 广州市番禺区人民医院)
- Filing Date
- 2025-04-16
- Publication Date
- 2026-06-26
AI Technical Summary
Existing limb immobilizers are difficult to precisely limit the movement of limbs in different positions, causing discomfort to patients after immobilization.
A limb immobilizer was designed. The limb immobilization mechanism includes a sliding rod, a lower fixing block, a mounting block, a guide rod, an upper fixing block, and a fixing rod. The position of the upper fixing block is adjusted by rotating a screw, and the limiting rod and limiting groove cooperate to achieve precise fixation of the limb at different positions, avoiding the trauma site and reducing discomfort during fixation.
It achieves precise fixation of the limb, reduces contact with the wound site, minimizes patient discomfort after fixation, and improves the practicality of the fixation effect.
Smart Images

Figure CN224403843U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically a limb trauma fixation device. Background Technology
[0002] In clinical treatment, when a patient suffers a limb fracture, it is necessary to first restore the displaced fracture ends to a normal or near-normal position, and then use a limb fixation device to fix the limb, thereby protecting the injured area, promoting fracture healing, and preventing complications.
[0003] In the prior art, patent publication number CN219645997U discloses a medical fixation device for limb trauma, including a lower support plate. A compression plate is installed at the upper end of the lower support plate, and a tightening device is installed at the lower end of the lower support plate, the tightening device cooperating with the compression plate. The lower support plate includes a U-shaped plate, with two limiting grooves formed on the left and rear ends of its outer side wall. The compression plate includes an arc-shaped plate, which interlocks with the U-shaped plate. Two limiting sliders are integrally formed on both sides of the arc-shaped plate, and the four limiting sliders respectively engage with four limiting grooves.
[0004] These types of limb trauma medical fixators have the following disadvantages: When fixing a limb, the U-shaped plate and the arc-shaped plate fit together to clamp and fix the limb. Since the size of different parts of the limb is different, it is difficult to accurately limit the different parts of the limb when using these types of limb trauma medical fixators, which leads to discomfort for the patient after the limb is fixed. Therefore, we propose a limb trauma fixator. Utility Model Content
[0005] The technical problem this invention aims to solve is to overcome existing defects and provide a limb trauma fixation device. Through the limb fixation mechanism, it can precisely fix different positions of the limb. By rotating the screw, the positions of multiple upper fixing blocks can be adjusted, allowing for a more snug fit when fixing the limb at different positions. Simultaneously, the lower fixing block can be moved to avoid the traumatic area of the limb, preventing contact with the traumatic area during fixation. While ensuring the fixation effect, it minimizes the patient's discomfort after limb fixation, making it more practical and effectively solving the problems in the prior art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a limb trauma fixation device, including a support ring one, wherein the upper side of the support ring one is hinged with a support ring two, and further includes a limb fixation mechanism;
[0007] The limb fixation mechanism includes a sliding rod, a lower fixing block, a mounting block, a guide rod, an upper fixing block, and a fixing rod. The sliding rod is fixedly connected to the front and rear sides of two support rings. Fixing blocks are slidably connected between the two sliding rods. Two symmetrically distributed fixing rods are fixedly connected between the two support rings. Evenly distributed mounting blocks are fixedly connected between the two fixing rods. Symmetrically distributed guide rods are slidably connected inside the mounting blocks. The lower ends of two longitudinally adjacent guide rods are fixedly connected to an upper fixing block. This limb fixation mechanism allows for precise fixation at different positions of the limb. The positions of the multiple upper fixing blocks can be adjusted by rotating the screw, resulting in a more snug fit when fixing the limb at different positions. Simultaneously, the lower fixing block can be moved to avoid injury sites on the limb, preventing contact with these sites during fixation. This ensures effective fixation while minimizing patient discomfort after limb fixation, making it more practical.
[0008] Furthermore, two symmetrically distributed connecting rods are fixedly connected between the two support rings, and two symmetrically distributed connecting rods are fixedly connected between the two support rings, thus connecting and fixing the two support rings and the two support rings in the lateral direction.
[0009] Furthermore, the limb fixation mechanism also includes limiting rods, all of which are fixedly connected to the outer surface of the front connecting rod. The upper surface of the lower fixing block has evenly distributed limiting grooves on the front side. The limiting rods are installed in conjunction with the limiting grooves to limit the lower fixing block.
[0010] Furthermore, the limb fixation mechanism also includes a screw, which is threaded into the interior of the mounting block. The lower end of the screw is rotatably connected to the upper surface of the upper fixing block to adjust the position of the upper fixing block.
[0011] Furthermore, a knob is fixedly connected to the upper end of the screw to facilitate rotation of the screw.
[0012] Furthermore, an elastic rubber pad is fixedly connected between the two support rings to provide flexible support for the limbs.
[0013] Furthermore, each of the lower surfaces of the second support ring is fixedly connected to an elastic plastic block, and each of the lower surfaces of the first support ring is provided with a slot. Each slot has a top block slidably connected inside it, and a spring is fixedly connected between the rear surface of the top block and the inner wall of the slot to connect and fix the second support ring and the first support ring.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This limb trauma fixation device has the following advantages:
[0015] The limb fixation mechanism allows for precise fixation of limbs at different locations. By rotating the screw, the positions of multiple upper fixation blocks can be adjusted to better fit the limb when fixing it in different positions. At the same time, the lower fixation block can be moved to avoid the injured area of the limb and prevent contact with the injured area during fixation. While ensuring the fixation effect, it minimizes the patient's discomfort after limb fixation, making it more practical. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0018] Figure 3 This is an enlarged structural diagram of point A in this utility model.
[0019] In the diagram: 1 Support ring one, 2 Support ring two, 3 Elastic rubber pad, 4 Limb fixation mechanism, 41 Slide rod, 42 Lower fixing block, 43 Limiting rod, 44 Mounting block, 45 Guide rod, 46 Upper fixing block, 47 Screw, 48 Fixing rod, 5 Knob, 6 Connecting rod one, 7 Elastic plastic clip, 8 Top block, 9 Spring, 10 Connecting rod two. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-3 This embodiment provides a technical solution: a limb trauma fixation device, including a support ring 1, with a support ring 2 hinged to the upper side of each support ring 1, symmetrically distributed connecting rods 10 fixedly connected between the two support rings 1, symmetrically distributed connecting rods 6 fixedly connected between the two support rings 2, and an elastic rubber pad 3 fixedly connected between the two support rings 1. The limb to be fixed is placed on the elastic rubber pad 3. An elastic plastic block 7 is fixedly connected to the front side of the lower surface of each support ring 2. A slot is opened on the front side of the lower surface of each support ring 1, and a top block 8 is slidably connected in each slot. A spring 9 is fixedly connected between the rear surface of the top block 8 and the inner wall of the slot. Pushing the lower end of the elastic plastic block 7 backward moves the lower side of the elastic plastic block 7 backward, pushing the top block 8 backward, and the spring 9 contracts, pulling the support ring 2, causing the support ring 2 to rotate 180° around the hinge. It also includes a limb fixation mechanism 4.
[0022] The limb fixation mechanism 4 includes a sliding rod 41, a lower fixing block 42, a mounting block 44, a guide rod 45, an upper fixing block 46, and fixing rods 48. The sliding rods 41 are fixedly connected to the front and rear sides of the two support rings 1 respectively. The fixing blocks 42 are slidably connected between the two sliding rods 41. The two support rings 2 are fixedly connected with symmetrically distributed fixing rods 48. The mounting blocks 44 are evenly distributed between the two fixing rods 48. The mounting blocks 44 are slidably connected to the interior of the mounting blocks 44. The lower ends of two longitudinally adjacent guide rods 45 are fixedly connected to an upper fixing block 46. The limb fixation mechanism 4 also includes a limiting rod 43, which is fixedly connected to the outer surface of the front connecting rod 6. The upper surface of the lower fixing block 42 has evenly distributed fixing rods 48 on the front side. The limb fixation mechanism 4, which is installed with a limb fixation rod 43 and a uniformly distributed limiting groove, also includes a screw 47. The screw 47 is threaded into the interior of the mounting block 44. The lower end of the screw 47 is rotatably connected to the upper surface of the upper fixing block 46. A knob 5 is fixedly connected to the upper end of the screw 47. By moving the lower fixing block 42, the lower fixing block 42 slides along the direction of the slide rod 41, thereby adjusting the position of the lower fixing block 42. After the lower fixing block 42 is adjusted to a suitable position, the support ring 2 is rotated, so that the elastic plastic clip 7 is inserted into the slot. At the same time, the lower end of the limiting rod 43 is inserted into the limiting groove to fix the lower fixing block 42. At this time, the knob 5 is rotated, which drives the screw 47 to rotate, causing the screw 47 to move and drive the upper fixing block 46 to move downward, thereby clamping and fixing the limb.
[0023] The working principle of the limb trauma fixation device provided by this utility model is as follows: When using this limb trauma fixation device to fix the limb, push the lower end of the elastic plastic block 7 backward, so that the lower side of the elastic plastic block 7 moves backward, push the top block 8 to move backward, the spring 9 contracts, pulls the second support ring 2, so that the second support ring 2 rotates 180° around the hinge, and the limb to be fixed is placed on the elastic rubber pad 3. At this time, move the lower fixing block 42, so that the lower fixing block 42 slides along the direction of the slide rod 41, thereby adjusting the position of the lower fixing block 42. After the lower fixing block 42 is adjusted to a suitable position, rotate the second support ring 2, so that the elastic plastic block 7 is inserted into the slot, and at the same time, the lower end of the limiting rod 43 is inserted into the limiting groove to fix the lower fixing block 42. At this time, rotate the knob 5, the rotation of the knob 5 drives the screw 47 to rotate, so that the screw 47 moves, driving the upper fixing block 46 to move downward, thereby clamping and fixing the limb.
[0024] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A limb wound fixator comprising a support ring one (1), the upper side of which is hinged with a support ring two (2) by means of a hinge, characterized in that: It also includes limb fixation mechanisms (4); Limb fixation mechanism (4): It includes a slide rod (41), a lower fixing block (42), a mounting block (44), a guide rod (45), an upper fixing block (46), and a fixing rod (48). The slide rod (41) is fixedly connected to the front and rear sides of the two support rings (1). The two slide rods (41) are slidably connected to the fixing blocks (42). The two support rings (2) are fixedly connected to the fixing rods (48) which are symmetrically distributed in front and rear. The two fixing rods (48) are fixedly connected to the mounting blocks (44) which are evenly distributed. The mounting blocks (44) are slidably connected to the inside of the mounting blocks (44). The lower ends of the two longitudinally adjacent guide rods (45) are fixedly connected to an upper fixing block (46).
2. The limb trauma immobilizer according to claim 1, characterized in that: Two support rings (1) are fixedly connected by symmetrically distributed connecting rods (10), and two support rings (2) are fixedly connected by symmetrically distributed connecting rods (6).
3. A limb trauma immobilizer according to claim 2, characterized in that: The limb fixation mechanism (4) also includes a limiting rod (43), which is fixedly connected to the outer surface of the connecting rod (6) on the front side. The upper surface of the lower fixing block (42) is provided with a uniformly distributed limiting groove, and the limiting rod (43) is installed in conjunction with the limiting groove.
4. A limb trauma immobilizer according to claim 1, characterized in that: The limb fixation mechanism (4) also includes a screw (47), which is threadedly connected to the inside of the mounting block (44), and the lower end of the screw (47) is rotatably connected to the upper surface of the upper fixing block (46).
5. A limb trauma immobilizer according to claim 4, characterized in that: A knob (5) is fixedly connected to the upper end of the screw (47).
6. A limb trauma immobilizer according to claim 1, characterized in that: An elastic rubber pad (3) is fixedly connected between the two support rings (1).
7. A limb trauma immobilizer according to claim 1, characterized in that: The lower surface of the second support ring (2) is fixedly connected to the front side of the lower surface of the first support ring (1), and the front side of the lower surface of the first support ring (1) is provided with a slot. A top block (8) is slidably connected in the slot. A spring (9) is fixedly connected between the rear surface of the top block (8) and the inner wall of the slot.