Bone fracture fixation device

Abstract

The utility model discloses a broken bone fixing device belongs to the medical instrument field, including support, and support is equipped with the accommodation space of accommodating the limbs, two fixed components are slidably installed in the support respectively, and every fixed component includes the pressure piece, sliding block, elastic part and the paddle, and the sliding block is slidably installed in the support, and the pressure piece is slidably installed in the sliding block, and the sliding direction of pressure piece forms the included angle with the sliding direction of sliding block, and the elastic part and the paddle are installed in the sliding block, and the paddle is equipped with the through -hole, and the paddle is installed in the pressure piece through the through -hole, and the both ends of elastic part respectively with the sliding block and the paddle resist the contact, and the paddle is inclined under the contact of elastic part, and the through -hole edge and the pressure piece resist the contact and make the pressure piece lock relative to the sliding block, through above -mentioned design, and the sliding block slides to the corresponding position of the both sides of the limbs fracture, and the paddle is actuated, and the pressure piece of fixed component is slid relative to the sliding block and is pressed against the limbs, and after releasing the paddle, the pressure piece is locked relative to the sliding block, makes the both sides of the limbs fracture all be positioned, can prevent the displacement of the fracture site after reduction.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a bone fracture fixation device. Background Technology

[0002] Forearm fractures are a common type of fracture in clinical practice, typically involving the radius and ulna. Closed reduction is a common treatment for forearm fractures, especially suitable for patients with good alignment of the fracture ends and no severe displacement or soft tissue damage. In closed reduction of forearm fractures, the use of temporary external fixation devices is crucial to ensuring effective reduction. Traditional fixation methods (such as casts or splints) often make effective X-ray examination difficult after reduction because the cast material can obstruct X-ray imaging, preventing doctors from accurately assessing the alignment of the fracture ends. Furthermore, removal is difficult when re-reduction is required. In addition, the fixation effect of traditional devices is unstable, and the fracture ends are easily displaced due to limb swelling or patient movement.

[0003] Therefore, there is an urgent need for a temporary external fixation device that is simple in structure and easy to operate, which can facilitate X-ray examination after reduction and achieve final fixation by inserting Kirschner wires after confirming successful reduction, thereby improving treatment efficiency and effectiveness.

[0004] During closed reduction of the forearm, the surgeon stabilizes the patient's limb and performs stretching and rotation maneuvers to reduce the fracture. After reduction, the surgeon's assistant needs to hold and stabilize the fracture site. During this stabilization process, the surgeon inserts Kirschner wires to fix the fracture. However, during the insertion of the Kirschner wires, the surgeon's assistant may experience unstable holding force, causing slight displacement of the fracture site and affecting the insertion position of the Kirschner wires. If the insertion position or angle of the Kirschner wires is not ideal, the surgeon often needs to insert the wires repeatedly. These repeated punctures can easily cause bone tissue damage or fracture, increasing the difficulty of the surgery, significantly reducing surgical efficiency, and increasing the patient's postoperative recovery time. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a fracture fixation device that can temporarily fix fractures, facilitate X-ray examination, and prevent displacement of the fracture site when Kirschner wires are inserted.

[0006] One of the objectives of this utility model is achieved through the following technical solution:

[0007] A bone fracture fixation device includes a support with a receiving space for accommodating a limb. The device further includes at least two fixation components slidably mounted on the support. Each fixation component includes a pressing member, a slider, an elastic member, and a lever. The slider is slidably mounted on the support, and the pressing member is slidably mounted on the slider. The sliding direction of the pressing member forms an angle with the sliding direction of the slider. The elastic member and the lever are mounted on the slider. The lever has a through hole and is mounted on the pressing member through the through hole. Both ends of the elastic member abut against the slider and the lever, respectively. The lever tilts under the abutment of the elastic member. The edge of the through hole abuts against the pressing member, locking the pressing member relative to the slider.

[0008] Furthermore, the sliding direction of the pressing member is perpendicular to the sliding direction of the slider.

[0009] Furthermore, the pressing member includes a slide rod and a pressing part fixed to the slide rod. The slide rod is slidably mounted on the slider, the paddle is located on the slide rod, and the pressing part is located within the receiving space.

[0010] Furthermore, the pressing member also includes a flexible layer that covers the pressing part on the side facing the receiving space.

[0011] Furthermore, the slide bar is provided with anti-slip grooves, and there are multiple anti-slip grooves, which are spaced apart along the length of the slide bar.

[0012] Furthermore, the plurality of anti-slip grooves are arranged in two rows, with the two rows of anti-slip grooves located on the upper and lower sides of the slide bar, respectively.

[0013] Furthermore, the slider is provided with a mounting hole and a receiving cavity communicating with the mounting hole. The extending direction of the mounting hole is perpendicular to the extending direction of the receiving cavity. The pressing member is slidably mounted in the mounting hole, and the elastic member and the paddle are mounted in the receiving cavity.

[0014] Furthermore, the receiving cavity is provided with an inclined surface, and the paddle fits against the inclined surface under the contact of the elastic member.

[0015] Furthermore, the slider is also provided with a groove located at the top and / or bottom of the receiving cavity, the edge of the groove forming a flange, the bracket is provided with a slide groove, the slider is slidably mounted in the slide groove, and the flange abuts against the bracket to position the slider on the slide groove.

[0016] Furthermore, the bracket includes a connecting plate and side plates fixed to the connecting plate. The connecting plate and the two side plates form the receiving space. The side plates include a plate body and a fixing strip. The plate body is provided with a slot. The fixing strip is fixed to the plate body and closes the slot to form the sliding groove.

[0017] Compared to existing technologies, this utility model's fracture fixation device includes a support frame with a receiving space for accommodating the limb. The device also includes at least two fixation components, each slidably mounted on the support frame. Each component includes a pressing member, a slider, an elastic member, and a lever. The slider is slidably mounted on the support frame, and the pressing member is slidably mounted on the slider. The sliding direction of the pressing member forms an angle with the sliding direction of the slider. The elastic member and the lever are mounted on the slider. The lever has a through hole and is mounted on the pressing member through the through hole. Both ends of the elastic member abut against the slider and the lever, respectively. The lever tilts under the pressure of the elastic member, and the edge of the through hole abuts against the pressing member, locking the pressing member relative to the slider. With this design, the slider slides to the corresponding positions on both sides of the limb fracture. Moving the lever causes the pressing member of the fixation component to slide against the limb relative to the slider. After releasing the lever, the pressing member locks relative to the slider, ensuring that both sides of the limb fracture are positioned, preventing displacement of the fracture site after reduction. Attached Figure Description

[0018] Figure 1 This is a perspective view of the bone fracture fixation device of this utility model;

[0019] Figure 2 for Figure 1 A three-dimensional diagram of the support frame for a fracture fixation device;

[0020] Figure 3 for Figure 1 A three-dimensional view of the fixation components of a fracture fixation device;

[0021] Figure 4 for Figure 3 Exploded view of the fastener;

[0022] Figure 5 for Figure 4 A three-dimensional view of the slider of the fixing component;

[0023] Figure 6 for Figure 5 A three-dimensional sectional view of the slider;

[0024] Figure 7 for Figure 1 A cross-sectional view of a bone fixation device;

[0025] Figure 8 for Figure 7 A partial structural cross-sectional view of a bone fracture fixation device;

[0026] Figure 9 for Figure 1 A three-dimensional diagram showing the usage status of a fracture fixation device.

[0027] In the diagram: 10, bracket; 11, connecting plate; 110, connecting hole; 111, observation slot; 12, side plate; 120, slide groove; 121, plate body; 1210, slot; 122, fixing strip; 123, first fastener; 13, receiving space; 14, opening; 20, fixing component; 21, pressing component; 210, slide rod; 2101, anti-slip groove; 211, operating part; 212, pressing part; 213, second fastener; 214, flexible layer; 22, slider; 220, mounting hole; 221, receiving cavity; 2210, inclined surface; 222, groove; 223, flange; 23, elastic element; 24, lever; 240, through hole; 100, limb. Detailed Implementation

[0028] 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.

[0029] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Please see Figure 1This utility model relates to a bone fracture fixation device for fixing a fractured or broken limb 100, which includes, but is not limited to, the forearm, hindarm, lower leg, and thigh. The device includes a support 10 and at least two fixation components 20. The support 10 houses the limb 100, and the at least two fixation components 20 are used to position the fractured sides of the limb 100 respectively, ensuring that the fractured limb 100 does not move after reduction. The at least two fixation components 20 are slidably mounted on the support 10 to adjust their position relative to the support 10, allowing them to move to the broken position of the limb 100. Specifically, in this embodiment, four fixation components 20 are used, arranged in pairs, with each pair positioning the broken side of the limb 100.

[0032] Please continue reading. Figure 2 The support 10 includes a connecting plate 11 and two side plates 12, which extend from the two edges of the connecting plate 11 and are perpendicular to it. The cross-section of the support 10 is inverted U-shaped. The connecting plate 11 and the two side plates 12 together form a receiving space 13 for receiving a limb 100. The ends of the two side plates 12 form openings 14 that communicate with the receiving space 13, facilitating the entry of the limb 100 into the receiving space 13. The connecting plate 11 is provided with a connecting hole 110 and an observation groove 111. The connecting hole 110 is used to connect the support 10 to the operating table and fix the fracture fixation device. The observation groove 111 extends along the length of the connecting plate 11 and is a through groove for observing the limb 100 within the receiving space 13. The side plates 12 are provided with sliding grooves 120 for the fixation component 20 to slide relative to the support 10, adjusting the position of the fixation component 20 along the length of the support 10 so that the pressing part 212 corresponds to the fracture position of the limb 100.

[0033] Specifically, the side plate 12 includes a plate body 121, a fixing strip 122, and a first fastener 123. The fixing strip 122 is fixed to the plate body 121 by the first fastener 123. The plate body 121 is provided with a slot 1210, which facilitates the installation of the slider 22 into the slide groove 120. After the fixing strip 122 is fixed to the plate body 121, it closes the slot 1210 to form the slide groove 120.

[0034] Please continue reading. Figure 3 as well as Figure 4 The fixing component 20 includes a pressing member 21, a slider 22, an elastic member 23, and a paddle 24.

[0035] The pressing member 21 extends into the receiving space 13 and moves along the width direction of the support 10 to press against the limb 100. The pressing member 21 includes a slide bar 210, an operating part 211, a pressing part 212, a second fastener 213, and a flexible layer 214. The operating part 211 is fixed to one end of the slide bar 210 for the user to grip, thereby moving the pressing member 21. The pressing part 212 is fixed to the other end of the slide bar 210 by the second fastener 213. The pressing part 212 is used to press against the disconnected part of the limb 100. The slide bar 210 is provided with anti-slip grooves 2101, and there are multiple anti-slip grooves 2101, which are spaced apart along the length direction of the slide bar 210. The multiple anti-slip grooves 2101 form two rows, and the two rows of anti-slip grooves 2101 are located on the upper and lower sides of the slide bar 210, respectively. The anti-slip groove 2101 increases the friction between the paddle 24 and the slide bar 210 when the paddle is tilted, so that the pressing part 21 locks relative to the slider. The flexible layer 214 covers the pressing part 212 on the side facing the receiving space 13 to prevent the pressing part 212 from damaging the limb 100.

[0036] Please continue reading. Figure 5 as well as Figure 6 The slider 22 is slidably mounted in the slide groove 120. The slider 22 is used to adjust the position of the fixation component 20 in the length direction of the bracket 10, so that the fixation component 20 can be moved to both sides of the fracture site of the limb 100. The slider 22 is provided with a mounting hole 220, a receiving cavity 221, and a groove 222. The mounting hole 220 extends along the width direction of the bracket 10 and is used to mount the slide rod 210 so that the pressing member 21 can slide relative to the slider 22. The receiving cavity 221 extends along the height direction of the bracket 10 and communicates with the mounting hole 220. The receiving cavity 221 is used to receive the elastic member 23 and the paddle 24. The receiving cavity 221 has a slope 2210 on the side away from the receiving space 13, and the slope 2210 is used to tilt the paddle 24. The groove 222 is located at the top and / or bottom of the receiving cavity 221, and the edge of the groove 222 forms a flange 223. When the pressing part 212 of the pressing member 21 presses against the limb 100, the reaction force causes the flange 223 to contact the side plate 12 of the bracket 10, thereby locking the slider 22 relative to the bracket 10. In this embodiment, the receiving cavity 221 is provided with grooves 222 at both the top and bottom.

[0037] Please continue reading. Figure 7 as well as Figure 8 The elastic element 23 is sleeved on the slide rod 210 and located within the receiving cavity 221. Both ends of the elastic element 23 abut against the slider 22 and the paddle 24, respectively. When the elastic element 23 is in a compressed state, the paddle 24, under the elastic force of the elastic element 23, adheres to the inclined surface 2210. At this time, the paddle 24 is tilted, and its through hole 240 is also tilted. The edge of the through hole 240 abuts against the slide rod 210, locking the slide rod 210 and locking the pressing element 21 relative to the slider. In this embodiment, the elastic element 23 is a spring.

[0038] The paddle 24 has a through hole 240, through which the sliding rod 210 of the pressing member 21 passes. When the paddle 24 is pressed by the elastic member 23, the paddle 24 adheres to the inclined surface 2210. At this time, the paddle 24 is tilted, and the edge of the through hole 240 abuts against the sliding rod 210, locking the sliding rod 210 and locking the pressing member 21 relative to the slider 22. When the paddle 24 is moved, the paddle 24 becomes vertical, and the sliding rod 210 can slide relative to the slider 22.

[0039] Please continue reading. Figure 9 When using the bone fixation device, the fracture site of limb 100 is reduced. The bone fixation device is installed into limb 100 through the opening 14, and the receiving space 13 is installed into limb 100. The slider 22 of the fixation component 20 moves in the slide groove 120. Fixation component 20 moves to one side of the fracture site of limb 100, and another fixation component 20 moves to the other side of the fracture site of limb 100. The lever 24 is turned vertically, and the pressing member 21 is moved to move along the width direction of the bracket 10 to press against limb 100, so that both sides of the reduced fracture site are positioned to prevent displacement of the reduced fracture site. The lever 24 is released, and the lever 24 is tilted by the elastic member 23. The edge of the through hole 240 abuts against the slide rod 210 and locks the slide rod 210, so that the pressing member 21 is locked relative to the slider 22. When the pressing part 212 of the pressing member 21 presses against the limb 100, the reaction force causes the flange 223 to contact the side plate 12 of the bracket 10, locking the slider 22 relative to the bracket 10. The fracture fixation device of this application can better help doctors maintain the position of the fractured bone after manual reduction, thereby making it easier and more accurate to drill the Kirschner wire into the fracture site, reducing the difficulty of surgery, improving surgical efficiency, and accelerating postoperative recovery.

[0040] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A bone fracture fixation device, comprising a support, characterized in that: The support has a receiving space for accommodating limbs. The fracture fixation device further includes at least two fixation components, which are slidably mounted on the support. Each fixation component includes a pressing member, a slider, an elastic member, and a paddle. The slider is slidably mounted on the support, and the pressing member is slidably mounted on the slider. The sliding direction of the pressing member forms an angle with the sliding direction of the slider. The elastic member and the paddle are mounted on the slider. The paddle has a through hole and is mounted on the pressing member through the through hole. Both ends of the elastic member abut against the slider and the paddle, respectively. The paddle tilts under the abutment of the elastic member. The edge of the through hole abuts against the pressing member, locking the pressing member relative to the slider.

2. The bone fixation device according to claim 1, characterized in that: The sliding direction of the pressing member is perpendicular to the sliding direction of the slider.

3. The bone fixation device according to claim 1, characterized in that: The pressing component includes a slide rod and a pressing part fixed to the slide rod. The slide rod is slidably mounted on the slider, the paddle is located on the slide rod, and the pressing part is located within the receiving space.

4. The bone fixation device according to claim 3, characterized in that: The pressure-retaining component further includes a flexible layer that covers the pressure-retaining portion on the side facing the receiving space.

5. The bone fixation device according to claim 3, characterized in that: The slide bar is provided with anti-slip grooves, and there are multiple anti-slip grooves, which are spaced apart along the length of the slide bar.

6. The bone fixation device according to claim 5, characterized in that: The anti-slip grooves are arranged in two rows, with the two rows of anti-slip grooves located on the upper and lower sides of the slide bar, respectively.

7. The bone fixation device according to claim 1, characterized in that: The slider is provided with a mounting hole and a receiving cavity communicating with the mounting hole. The extending direction of the mounting hole is perpendicular to the extending direction of the receiving cavity. The pressing member is slidably mounted in the mounting hole, and the elastic member and the paddle are mounted in the receiving cavity.

8. The bone fixation device according to claim 7, characterized in that: The receiving cavity has an inclined surface, and the paddle fits against the inclined surface under the contact of the elastic element.

9. The bone fixation device according to claim 7, characterized in that: The slider is also provided with a groove located at the top and / or bottom of the receiving cavity. The edge of the groove forms a flange. The bracket is provided with a slide groove. The slider is slidably installed in the slide groove. The flange abuts against the bracket to position the slider on the slide groove.

10. The bone fixation device according to claim 9, characterized in that: The bracket includes a connecting plate and side plates fixed to the connecting plate. The connecting plate and the two side plates form the receiving space. The side plates include a plate body and a fixing strip. The plate body has a slot. The fixing strip is fixed to the plate body and closes the slot to form the sliding groove.

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