Rib traction reduction posterior external fixation device and method of use

Abstract

The application discloses a rib traction reduction external fixing device and a use method thereof, and particularly relates to the technical field of medical instruments, which comprises an external fixing plate, a plurality of first through holes are formed in the external fixing plate, a support plate, a plurality of second through holes are formed in the support plate, a fastening structure, the fastening structure is used for fixedly connecting the external fixing plate and the support plate, a fixing structure, the fixing structure is arranged at two ends of the external fixing plate, and the external fixing plate is fixed to the outside of a thoracic cage through the fixing structure. The application has the advantages of simple and effective structure, good thoracic wall fixing stability, good fracture end reduction alignment, good fixing effect and small surgical trauma.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an external fixation device for rib traction reduction and its method of use. Background Technology

[0002] Rib fractures are most commonly caused by external injuries, usually due to a significant impact on the torso. Pathological rib fractures are relatively rare. In practice, most patients require external fixation to prevent rib displacement and promote healing.

[0003] Currently, there are two main methods for treating rib fractures: non-surgical and surgical methods, which involve fixing the chest wall. Non-surgical methods mainly include local sandbag or heavy object compression, chest bandage fixation, chest brace, rib traction suspension, and ventilator-assisted breathing with internal fixation. However, conservative methods have drawbacks such as easy displacement of fixation devices, poor fixation of fracture ends, prolonged pain duration, easy damage to nerves and intercostal blood vessels, and increased risk of respiratory function due to indentation in the fracture area, as well as deformities due to misalignment and poor aesthetics. They also have many complications, high risks, long recovery time, poor prognosis, and low patient satisfaction. Surgical methods currently most commonly used are nickel-titanium shape memory alloy rib circumferential fixation frameworks and synthetic resin intramedullary nails. The former provides reliable fixation and has good tissue compatibility, but it also has drawbacks such as limited material selection, poor anti-rotation, and the risk of dislodgement, breakage, and secondary removal. Synthetic resin is absorbable and does not require secondary surgery for removal, but it needs to be inserted into the medullary cavity during fixation, and infection can cause osteomyelitis. Currently, for flail chest, thoracotomy for fracture reduction and internal fixation is not a routinely recommended treatment method. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide an external fixation device for rib traction reduction and its usage method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an external fixation device for rib traction reduction, comprising:

[0006] External fixing plate: The external fixing plate is provided with several first through holes;

[0007] Support plate: The support plate is provided with several second through holes;

[0008] Fastening structure: The fastening structure is used for the fixed connection between the outer fixing plate and the support plate;

[0009] Fixing structure: The fixing structure is located at both ends of the external fixing plate, and the external fixing plate is fixed to the outside of the thorax through the fixing structure.

[0010] In a preferred embodiment, the curvature of both the outer fixing plate and the support plate is adjustable.

[0011] In a preferred embodiment, the fastening structure consists of a fixed frame, a threaded sleeve, and a fixing bolt. The fixed frame is mounted on an outer fixed plate, a threaded sleeve is installed on the side end of the fixed frame, and a fixing bolt is installed on the internal thread of the threaded sleeve. One end of the support plate is located inside the fixed frame and fixed by the fixing bolt.

[0012] In a preferred embodiment, the fixing structure consists of a left fixing strap and a right fixing strap, wherein the left fixing strap has a hook and loop fastener A side and the right fixing strap has a hook and loop fastener B side.

[0013] A method for using an external fixation device after rib traction reduction includes the following steps:

[0014] S1. Adjust the curvature of the external fixation plate according to the curvature of the chest wall at the fracture site, so that the external fixation plate fits the chest wall as closely as possible, and fix the external fixation plate to the chest wall through the left fixation strap and the right fixation strap;

[0015] S2. Adjust the curvature of the support plate according to the curvature of the outer fixing plate, pass both ends of the support plate through the fixing frame, and rotate the fixing bolts to fix the support plate;

[0016] S3. One end of the steel wire passes through the second through hole on the support plate and the first through hole on the external fixation plate in sequence, pierces into the chest wall to reach the fracture site of the rib, pulls the fractured rib, and then passes through the first through hole on the external fixation plate and the second through hole on the support plate in sequence.

[0017] S4. Rotate both ends of the steel wire to tighten and pull the fractured rib upwards, aligning and fixing the fractured rib with the fracture site on the other side.

[0018] In a preferred embodiment, the steel wire in step S3 passes through different first through holes on the outer fixing plate.

[0019] In a preferred embodiment, the steel wire in step S3 passes through the same second through hole in the support plate.

[0020] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0021] This invention utilizes the curvature of the thoracic wall at the fracture site, adjusting the curvature of the external fixation plate with bending clamps to ensure it fits snugly against the chest wall. The external fixation plate is then secured to the chest wall using left and right fixation straps. Following the curvature of the external fixation plate, the curvature of the support plate is adjusted with bending clamps. Both ends of the support plate are passed through the fixation frame, and rotating the fixing bolts moves them towards the frame, clamping the support plate firmly. One end of a steel wire is sequentially passed through the second through-hole on the support plate and the first through-hole on the external fixation plate, penetrating the chest wall to reach the rib fracture site and pulling on the fractured rib. The wire then sequentially passes through different first through-holes on the external fixation plate and the same second through-hole on the support plate, exiting from the same second through-hole on the support plate. Rotating both ends of the wire tightens it, pulling the fractured rib upwards until it aligns with the fracture site on the other side. This invention provides better protection for the fracture site, promotes fracture healing, and has the advantages of simple and effective structure, good chest wall fixation stability, fracture end repositioning and alignment, good fixation effect, and minimal surgical trauma. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a state diagram of the present invention during operation.

[0024] The attached diagram is labeled as follows: 1. Outer fixing plate; 2. Support plate; 3. First through hole; 4. Second through hole; 5. Fixing frame; 6. Threaded sleeve; 7. Fixing bolt; 8. Left fixing strap; 9. Right fixing strap; 10. Velcro A side; 11. Velcro B side. Detailed Implementation

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

[0026] according to Figure 1-2 The external fixation device shown includes:

[0027] External fixing plate 1: The external fixing plate 1 is provided with a plurality of first through holes 3;

[0028] Support plate 2: The support plate 2 is provided with a plurality of second through holes 4;

[0029] Fastening structure: The fastening structure is used for the fixed connection between the outer fixing plate 1 and the support plate 2;

[0030] Fixing structure: The fixing structure is located at both ends of the outer fixing plate 1, and the outer fixing plate 1 is fixed to the outside of the thorax through the fixing structure.

[0031] In a preferred embodiment, the curvature of both the outer fixing plate 1 and the support plate 2 is adjustable, and the curvature of both the outer fixing plate 1 and the support plate 2 can be adjusted by bending pliers.

[0032] In a preferred embodiment, the fastening structure consists of a fixing frame 5, a threaded sleeve 6, and a fixing bolt 7. The fixing frame 5 is mounted on the outer fixing plate 1. The threaded sleeve 6 is installed on the side end of the fixing frame 5. The fixing bolt 7 is installed in the internal thread of the threaded sleeve 6. One end of the support plate 2 is located inside the fixing frame 5 and fixed by the fixing bolt 7. One end of the support plate 2 is inserted into the fixing frame 5. The fixing bolt 7 is threadedly installed with the threaded sleeve 6. When the fixing bolt 7 is rotated, the fixing bolt 7 moves toward the fixing frame 5 to fix and clamp the support plate 2.

[0033] In a preferred embodiment, the fixing structure consists of a left fixing strap 8 and a right fixing strap 9. The left fixing strap 8 is provided with a Velcro A side 10, and the right fixing strap 9 is provided with a Velcro B side 11, so as to fix the external fixing plate 1 to the outside of the chest through the left fixing strap 8 and the right fixing strap 9.

[0034] A method for using an external fixation device after rib traction reduction includes the following steps:

[0035] S1. Adjust the curvature of the external fixation plate 1 according to the curvature of the chest wall at the fracture site so that the external fixation plate 1 fits the chest wall as closely as possible, and fix the external fixation plate 1 to the chest wall through the left fixation strap 8 and the right fixation strap 9.

[0036] S2. Adjust the curvature of the support plate 2 according to the curvature of the outer fixing plate 1, pass both ends of the support plate 2 through the fixing frame 5, and rotate the fixing bolt 7 to fix the support plate 2.

[0037] S3. One end of the steel wire passes through the second through hole 4 on the support plate 2 and the first through hole 3 on the external fixation plate 1 in sequence, pierces into the chest wall to reach the fracture site of the rib, pulls the fractured rib, and then passes through the first through hole 3 on the external fixation plate 1 and the second through hole 4 on the support plate 2 in sequence.

[0038] S4. Rotate both ends of the steel wire to tighten and pull the fractured rib upwards, aligning and fixing the fractured rib with the fracture site on the other side.

[0039] In a preferred embodiment, the steel wire in step S3 passes through different first through holes 3 on the outer fixing plate 1.

[0040] In a preferred embodiment, the steel wire in step S3 passes through the same second through hole 4 on the support plate 2.

[0041] In summary, during use, the curvature of the external fixation plate 1 is adjusted using bending clamps according to the thoracic wall curvature of the fracture site, so that the external fixation plate 1 fits the chest wall as closely as possible. The external fixation plate 1 is then fixed to the chest wall using the left fixation strap 8 and the right fixation strap 9. The curvature of the support plate 2 is adjusted using bending clamps according to the curvature of the external fixation plate 1. Both ends of the support plate 2 are passed through the fixation frame 5, and the fixing bolt 7 is rotated, moving towards the fixation frame 5 to clamp the support plate 2. One end of the steel wire is then passed sequentially through the second through hole 4 on the support plate 2 and the first through hole 3 on the external fixation plate 1, and inserted into the chest wall. The wire reaches the fracture site of the rib, pulls the fractured rib, and then passes through different first through holes 3 on the external fixation plate 1 and the same second through holes 4 on the support plate 2 in sequence, and exits from the same second through holes 4 on the support plate 2; by rotating both ends of the wire, the wire tightens and pulls the fractured rib upward, and the fractured rib is pulled upward and aligned with the fracture site on the other side for fixation; this invention provides better protection for the fracture site, promotes fracture healing, and has the advantages of simple and effective structure, good chest wall fixation stability, fracture end reduction and alignment, good fixation effect, and minimal surgical trauma.

[0042] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0043] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0044] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An external fixation device for rib traction reduction, characterized in that, include: An outer fixing plate (1) is provided with a plurality of first through holes (3); The support plate (2) has several second through holes (4). The support plate (2) and the outer fixing plate (1) are independent, non-overlapping, double-layer split structures. The outer fixing plate (1) is used to fit the chest wall. The support plate (2) is located on the outside of the outer fixing plate (1). The curvature of the outer fixing plate (1) and the support plate (2) can be adjusted independently. The fastening structure consists of a fixed frame (5), a threaded sleeve (6), and a fixing bolt (7). The fixed frame (5) is fixedly installed on the outer fixing plate (1). The side end of the fixed frame (5) is fitted with a threaded sleeve (6). The threaded sleeve (6) is fitted with a fixing bolt (7) through its internal thread. One end of the support plate (2) passes through the fixed frame (5) and is locked by the fixing bolt (7), thereby achieving an adjustable connection between the support plate (2) and the outer fixing plate (1). The fixing structure consists of a left fixing strap (8) and a right fixing strap (9). The left fixing strap (8) and the right fixing strap (9) are respectively located at both ends of the outer fixing plate (1). The left fixing strap (8) is provided with a Velcro A side (10), and the right fixing strap (9) is provided with a Velcro B side (11). The outer fixing plate (1) is fixed to the outside of the chest wall by the left and right fixing straps around the thorax. The first through hole (3) of the external fixation plate (1) and the second through hole (4) of the support plate (2) cooperate to form a wire-passing channel. The steel wire can pass through the second through hole (4) of the support plate (2) and the first through hole (3) of the external fixation plate (1) in sequence to penetrate the chest wall and reach the rib fracture site. After traction of the fractured rib, it passes through another different first through hole (3) on the external fixation plate (1) and the same second through hole (4) on the support plate (2) in sequence to form a traction fixation structure with the support plate (2) as the load-bearing fulcrum.

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