Temporary fixator for tubular bone fractures

Abstract

This utility model belongs to the field of medical device technology and discloses a temporary fixator for tubular bone fractures, including a fixation strap and a locking member. The fixation strap has several small holes evenly distributed on it. One end of the fixation strap is fixedly connected to the locking member. The locking member has a connecting slot for the fixation strap to pass through. A connecting rod is rotatably connected inside the locking member. A gear is fixedly connected to the connecting rod. The tooth shape of the gear matches the small holes on the fixation strap. One end of the connecting rod passes through the locking member and is fixedly connected to a rotary button. The rotary button has a cross groove and anti-slip texture. A limit rod is slidably connected to the locking member. A support block is fixedly connected to the limit rod. A spring is sleeved on the limit rod. This utility model solves the problems of existing devices being unable to quickly reduce and lock multiple fracture fragments, lacking an effective locking mechanism, and being prone to loosening after being adapted to the patient's fracture ends.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a temporary fixation device for tubular bone fractures. Background Technology

[0002] A fracture is a complete or partial break in the continuity of bone structure. Treatment principles include reduction, fixation, and functional exercise. In open reduction and internal fixation surgery for fractures, reduction forceps are used to clamp the fracture ends for reduction, followed by temporary fixation with Kirschner wires. Finally, plates and screws are inserted to complete the final fixation. As a temporary fixator, the Kirschner wires provide mechanical stability in the early stages of the fracture, effectively withstanding external forces such as muscle traction and limb movement, preventing fracture displacement, creating favorable conditions for subsequent surgical procedures, and providing crucial protection for the patient.

[0003] However, Kirschner wire operation is complex and time-consuming. For fractures consisting of multiple fragments, Kirschner wires need to be inserted into each fragment sequentially, making it impossible to reduce and lock multiple fragments at once. This makes it difficult to quickly fix the fracture ends. During the insertion of Kirschner wires, they can easily push open the already reduced fragments, making it difficult to maintain a tight fit between the multiple fragments and ensuring the accuracy of reduction. In addition, due to the lack of an effective locking mechanism, the device is prone to loosening after being fitted to the patient's fracture ends, thus reducing the fit.

[0004] Therefore, there is an urgent need for a new type of temporary fixator that can quickly reposition and lock multiple fracture fragments without loosening after being adapted to the patient's fracture ends. Utility Model Content

[0005] The present invention aims to provide a temporary fixator for tubular bone fractures to solve the problems of existing devices being unable to quickly reduce and lock multiple fracture fragments, lacking an effective locking mechanism, and being prone to loosening after being adapted to the patient's fracture ends.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The basic technical solution provided by this utility model is: a temporary fixator for tubular bone fractures, including a fixation strap and a locking member. The fixation strap has several small holes evenly distributed on it. One end of the fixation strap is fixedly connected to the locking member. The locking member has a connecting slot for the fixation strap to pass through. A connecting rod is rotatably connected inside the locking member. A gear is fixedly connected to the connecting rod. The tooth profile of the gear matches the small holes on the fixation strap. One end of the connecting rod passes through the locking member and is fixedly connected to a rotary button. A limit rod is slidably connected to the locking member. A support block is fixedly connected to the limit rod. A spring is sleeved on the limit rod.

[0008] The principle of the basic technical solution is as follows: The fixing band is placed into the connecting gap of the locking component. By rotating the rotary button, the rotary button drives the gear to rotate via the connecting rod. The gear teeth match the small hole, causing the gear to move the fixing band, ultimately adjusting the size of the "ring" formed by the fixing band. When the limiting rod is pulled up, the limiting rod moves upward, and simultaneously the support block on the limiting rod compresses the spring. At this time, the fixing band can move smoothly within the connecting gap. When the limiting rod is lowered, the spring returns to its original deformation and begins to compress the support block, causing the support block and the limiting rod to move downward. At this time, the support rod falls into the small hole of the fixing band, limiting and fixing the fixing band.

[0009] The beneficial effects of the basic technical solution are: through the interaction of the gear teeth and the small holes, the size of the "ring" formed by the fixation strap can be adjusted precisely and quickly, so that the device can effectively adapt to different patient body shapes and effectively deal with fractures in different parts of the patient's body, thus enhancing the device's speed and adaptability; through the interaction of the limiting rod and the fixation strap, the problem of the device easily becoming loose after adapting to the patient's body shape is effectively avoided.

[0010] Preferably, the fixing band is made of a titanium alloy material with good biocompatibility.

[0011] With the above settings, titanium alloys with good microstructure compatibility exhibit excellent strength and lightweight properties.

[0012] Preferably, the rotary button has anti-slip texture.

[0013] These features enhance the user's grip stability and control precision during operation. The anti-slip texture effectively increases the friction of the button surface, allowing the user to maintain a good grip even in wet or slippery environments, reducing operational errors caused by slipping.

[0014] Preferably, the rotary button has a cross-shaped groove.

[0015] The above design incorporates a groove that matches the blade of a screwdriver, making it easier for medical staff to rotate the rotary button.

[0016] Preferably, the width of the fixing strap is 5mm to 20mm, the thickness of the fixing strap is 0.6mm to 1mm, and the length of the fixing strap is 50mm to 250mm.

[0017] With the above settings and reasonable size design, the fixation strap can be provided with better adaptability and functionality, and the appropriate size can be selected according to the patient's condition.

[0018] Preferably, the fixing strap is marked with graduations.

[0019] With the above settings, the size of the ring formed by the fixation strap can be determined by the scale, which makes it easier for medical staff to adjust the size of the ring in order to reposition and lock the patient's fracture ends. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a temporary fixation device for tubular bone fractures according to the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a temporary fixation device for tubular bone fractures according to the present invention;

[0022] Figure 3 This is a cross-sectional view of a temporary fixation device for tubular bone fractures according to the present invention;

[0023] The corresponding markings in the attached diagram are named as follows: 1. Fixing strap; 2. Locking element; 3. Small hole; 4. Connecting gap; 5. Connecting rod; 6. Gear; 7. Rotary button; 8. Limiting rod; 9. Support block; 10. Spring; 11. Cross groove. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0025] like Figures 1-3 As shown: A temporary fixator for tubular bone fractures includes a fixation strap 1 and a locking member 2. The fixation strap 1 is made of titanium alloy, with a width of 5mm to 20mm, a thickness of 0.6mm to 1mm, and a length of 50mm to 250mm. The fixation strap 1 is marked with graduations and has several small holes 3 evenly distributed on it. One end of the fixation strap 1 is fixedly connected to the locking member 2. The locking member 2 has a connecting slot 4 for the fixation strap 1 to pass through. A connecting rod 5 is rotatably connected inside the locking member 2. A gear 6 is fixedly connected to the connecting rod 5. The tooth shape of the gear 6 matches the small holes 3 on the fixation strap 1. One end of the connecting rod 5 passes through the locking member 2 and is fixedly connected to a rotary button 7. The rotary button 7 has a cross groove 11 and anti-slip texture. A limiting rod 8 is slidably connected to the locking member 2. A support block 9 is fixedly connected to the limiting rod 8. A spring 10 is sleeved on the limiting rod 8.

[0026] The specific implementation process is as follows:

[0027] First, select a fixation strap 1 of appropriate size according to the patient's condition, and use the fixation strap 1 to wrap around the fracture ends of the patient, and put the free end of the fixation strap 1 into the connecting gap 4;

[0028] Next, the limit rod 8 is pulled up, and the limit rod 8 moves upward. The support block 9 on the limit rod 8 moves upward along with the limit rod 8. At this time, the support block 8 compresses the spring 10.

[0029] Then, rotate the rotary button 7. Rotate the rotary button 7 to drive the gear 6 to rotate together through the connecting rod 5. The tooth shape of the gear matches the small hole 3 on the fixation belt 1. The rotating gear 6 will drive the fixation belt 1 to move together, thereby effectively adjusting the size of the "ring" formed by the fixation belt 1. At the same time, the size of the "ring" is precisely controlled by the scale on the fixation belt, thereby making the fixation belt 1 compress the fracture end and complete the fixation of the fracture end.

[0030] Finally, the pulled-up limiting rod 8 is released, and the limiting rod 8 and the support block 9 lose the upward pulling force. Under the elastic force of the spring 10, they begin to move downward until the end of the limiting rod 8 matches the small hole 3 on the fixing band 1. At this time, the mutual limiting and fixing of the limiting rod 8 and the small hole 3 effectively solves the problem that the fixing band 1 is prone to loosening after it is adapted to the patient's body shape.

[0031] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A temporary fixation device for tubular bone fractures, characterized in that: The device includes a fixing strap (1) and a locking member (2). The fixing strap (1) has several small holes (3) evenly distributed on it. One end of the fixing strap (1) is fixedly connected to the locking member (2). The locking member (2) has a connecting gap (4) for the fixing strap (1) to pass through. A connecting rod (5) is rotatably connected inside the locking member (2). A gear (6) is fixedly connected to the connecting rod (5). The tooth profile of the gear (6) matches the small holes (3) on the fixing strap (1). One end of the connecting rod (5) passes through the locking member (2) and is fixedly connected to a rotary button (7). The locking member (2) is slidably connected to a limit rod (8). A support block (9) is fixedly connected to the limit rod (8). A spring (10) is sleeved on the limit rod (8).

2. The temporary fixation device for tubular bone fractures according to claim 1, characterized in that: The fixing band (1) is made of titanium alloy material with good biocompatibility.

3. The temporary fixation device for tubular bone fractures according to claim 1, characterized in that: The rotary button (7) has anti-slip texture.

4. A temporary fixation device for tubular bone fractures according to claim 1, characterized in that: The rotary button (7) is provided with a cross groove (11).

5. A temporary fixation device for tubular bone fractures according to claim 1, characterized in that: The width of the fixing strap (1) is 5mm to 20mm, the thickness of the fixing strap (1) is 0.6mm to 1mm, and the length of the fixing strap (1) is 50mm to 250mm.

6. A temporary fixation device for tubular bone fractures according to claim 1, characterized in that: The fixing strap (1) is marked with graduations.

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