External fixation support for orthopedics department

Abstract

The utility model discloses an orthopaedic external fixation support, which comprises a connecting rod, a fixing block assembly and a bone needle, the connecting rod is made of carbon fiber materials, and the connecting rod is designed into different shapes on the basis of anatomical functional positions required to be fixed after the elbow joint, the wrist joint, the knee joint and the ankle joint of a human body are fractured. According to the utility model, the butterfly nut is adopted to lock and fix the assembly, so that the locking is more convenient than that of an inner hexagonal tool. The connecting rod designed on the basis of a dissecting functional position can effectively maintain the traction effect, promote fracture healing and facilitate recovery of joint functions. The device is fixed at a functional position, so that local swelling and pain can be relieved, the fracture reduction position is kept, fracture healing and repairing are promoted, pain is relieved, complications are prevented, and the limb blood supply condition is observed. And meanwhile, the bone needles are fixed on the connecting rod 1, so that the safety risk caused by looseness of the connecting part can be reduced, and the firmness of the external fixation bracket system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an orthopedic external fixation bracket. Background Art

[0002] An orthopedic external fixator is a medical device used for external fixation. It is achieved by percutaneously puncturing metal bone needles (or fixation nails) in the proximal and distal bone segments of the fracture, and then connecting the needle ends exposed outside the skin with a connecting rod 1 and a fixing clamp to fix, pressurize or pull the bone ends to achieve orthopedic deformity correction, fracture reduction and other treatment purposes.

[0003] Existing orthopedic external fixator systems, such as the orthopedic external fixator disclosed in patent number CN105411659A, have a basic structure comprising a support rod, a nail rod clamping mechanism, and a bone screw. The nail rod clamping mechanism is mainly composed of a U-shaped clamp I, a ball head handle, and a bolt. During the tightening of the bolt, the semicircular thin wall first deforms to clamp the support rod, and then the two side walls of the U-shaped clamp deform again to clamp the ball head. Although the orthopedic external fixator system of the above structure is relatively easy to use, the nail rod clamping mechanism separates and fixes the bone pin and the connecting rod, and the clamping force is insufficient. Most of the bone surgical stents currently used to treat fractures adopt a combined method to achieve functional position reduction. The combined external fixator system is complex in composition. During the patient's rehabilitation process, there are risks such as loose joints and easy infection, which affect the recovery of the patient's bone function.

[0004] Therefore, based on the above technical problems, it is necessary for technicians in this field to develop an orthopedic external fixation bracket. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an orthopedic external fixator to solve the problem that most of the current orthopedic surgical stents for treating fractures adopt a combined method to achieve functional position reduction. The combined external fixator system has a complex composition, and there are risks such as loose connections and easy infection during the patient's rehabilitation process, which affects the recovery of the patient's bone function.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] An orthopedic external fixator, comprising a connecting rod, a fixation block assembly, and a bone pin. The connecting rod is made of carbon fiber material and is designed in different shapes based on the anatomical functional positions required for fixation after fractures of the human elbow, wrist, knee, and ankle joints.

[0008] The fixing block assembly includes a clamping bolt, a bone needle seat, a spring, a rod clamp and a butterfly nut. The spring can pre-apply a certain force to the fixing block assembly to facilitate initial fixation. The rod clamp is provided with a first anti-slip tooth, and the bone needle seat is provided with a second anti-slip tooth. The first anti-slip tooth can cooperate with the second anti-slip tooth on the bone needle seat to fix the angle of the bone needle.

[0009] Preferably, the rod clamp is provided with a first step hole, and the bone needle seat is provided with a second step hole.

[0010] Preferably, the first step hole cooperates with the second step hole on the bone needle seat to fix the position of the spring.

[0011] Preferably, the rod clamp is provided with a third through hole, the third through hole cooperates with the connecting rod to fix the position of the connecting rod, and the inner wall of the third through hole is provided with anti-slip lines.

[0012] Preferably, the rod clamp is provided with a first through hole, and the bone needle seat is provided with a second through hole.

[0013] Preferably, the first through hole and the second through hole cooperate with a clamping bolt and a butterfly nut to lock the bone pin.

[0014] Preferably, a semicircular groove is provided on the bone needle seat, and a V-shaped groove is provided on the clamping bolt, and the semicircular groove cooperates with the V-shaped groove to fix the position of the bone needle.

[0015] Preferably, the clamping bolt is provided with an external thread, and the butterfly nut is provided with an internal threaded hole.

[0016] Preferably, the external thread cooperates with the internal thread hole to lock the fixing block assembly.

[0017] Preferably, the butterfly nut is provided with a wing, and the wing is used to lock the fixed block assembly.

[0018] The above technical solution has the following beneficial effects:

[0019] The present invention uses a butterfly nut to lock the fixing assembly, which is more convenient than using an internal hexagonal tool for locking. The connecting rod designed based on the anatomical functional position of the present invention can effectively maintain the traction effect, promote fracture healing, and facilitate the recovery of joint function. Fixing it in the functional position can reduce local swelling and pain, maintain the position of fracture reduction, promote fracture healing and repair, relieve pain, prevent complications, and observe limb blood circulation. At the same time, fixing the bone needle on a connecting rod 1 can reduce the safety risks caused by loose connection and improve the firmness of the external fixation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0022] Figure 1 It is a schematic diagram of the functional position connecting rod of the knee joint of an orthopedic external fixator.

[0023] Figure 2 It is a schematic diagram of the functional position connecting rod of the elbow joint of the orthopedic external fixator.

[0024] Figure 3 It is a schematic diagram of the functional position connecting rod of the wrist joint of the orthopedic external fixator.

[0025] Figure 4 This is a schematic diagram of the functional connection rod of the ankle joint of an orthopedic external fixator.

[0026] Figure 5 1 is a schematic diagram of the assembly of the orthopedic external fixator.

[0027] Figure 6 yes Figure 5 Schematic diagram showing the structure of the fixing clamp assembly of an orthopedic external fixator.

[0028] Figure 7 It is a rod clamp schematic diagram and BB cross-sectional view of the bone needle fixing block assembly.

[0029] Figure 8 It is a schematic diagram of the bone needle seat and an AA cross-sectional view of the bone needle fixing block assembly.

[0030] Figure 9 Schematic diagram of the clamping bolt of the bone pin fixation block assembly.

[0031] Figure 10 Schematic diagram of the butterfly nut of the bone pin fixation block assembly.

[0032] In the figure: 1. Connecting rod; 2. Fixing block assembly; 3. Bone needle; 4. Clamping bolt; 5. Bone needle seat; 6. Spring; 7. Rod clamp; 8. Butterfly nut; 9. First anti-slip tooth; 10. First stepped hole; 11. Third through hole; 12. First through hole; 13. Second stepped hole; 14. Semicircular groove; 15. Second anti-slip tooth; 16. Second through hole; 17. V-shaped groove; 18. External thread; 19. Internal thread hole; 20. Wing. DETAILED DESCRIPTION

[0033] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0034] See also Figures 1-10 As shown, the utility model is an orthopedic external fixator, comprising a connecting rod 1, a fixing block assembly 2 and a bone pin 3. The connecting rod 1 is made of carbon fiber material and is designed in different shapes based on the anatomical functional positions required for fixation after fractures of the human elbow, wrist, knee and ankle joints.

[0035] The fixing block assembly 2 includes a clamping bolt 4, a bone needle seat 5, a spring 6, a rod clamp 7 and a butterfly nut 8. The spring 6 can pre-apply a certain force to the fixing block assembly 2 to facilitate preliminary fixation. The rod clamp 7 is provided with a first anti-slip tooth 9, and the bone needle seat 5 is provided with a second anti-slip tooth 15. The first anti-slip tooth 9 can cooperate with the second anti-slip tooth 15 on the bone needle seat 5 to fix the angle of the bone needle 3.

[0036] In order to solve the problem of fixing the position of the spring 6 , a first step hole 10 is provided on the rod clamp 7 , and a second step hole 13 is provided on the bone needle seat 5 .

[0037] In order to solve the problem of fixing the position of the spring 6 , the first step hole 10 cooperates with the second step hole 13 on the bone needle seat 5 to fix the position of the spring 6 .

[0038] In order to solve the problem of fixing the connecting rod 1, the rod clamp 7 is provided with a third through hole 11, and the third through hole 11 cooperates with the connecting rod 1 to fix the position of the connecting rod 1. The inner wall of the third through hole 11 is provided with anti-slip lines.

[0039] In order to solve the problem of locking the bone needle 3 , a first through hole 12 is provided on the rod clamp 7 , and a second through hole 16 is provided on the bone needle seat 5 .

[0040] In order to solve the problem of locking the bone needle 3 , the first through hole 12 and the second through hole 16 cooperate with the clamping bolt 4 and the butterfly nut 8 to lock the bone needle 3 .

[0041] In order to solve the problem of fixing the bone needle 3, a semicircular groove 14 is provided on the bone needle seat 5, and a V-shaped groove 17 is provided on the clamping bolt 4. The semicircular groove 14 cooperates with the V-shaped groove 17 to fix the position of the bone needle 3.

[0042] In order to solve the problem of locking the fixing block assembly 2 , the clamping bolt 4 is provided with an external thread 18 , and the butterfly nut 8 is provided with an internal thread hole 19 .

[0043] In order to solve the problem of locking the fixing block assembly 2 , the external thread 18 cooperates with the internal thread hole 19 to lock the fixing block assembly 2 .

[0044] In order to solve the problem of locking the fixing block assembly 2 , a wing 20 is provided on the butterfly nut 8 , and the wing 20 is used to lock the fixing block assembly 2 .

[0045] Working principle: The connecting rod 1 is an anatomically functional carbon fiber rod with light weight and high strength. The design is based on the clinical optimal fixation position required for fractures in various parts of the human body, namely, the functional position of the elbow joint is 90° flexion, the wrist joint is 25° dorsiflexion, the knee joint is 5° flexion, and the ankle joint is 90°. In the anatomical functional position of the ankle joint, the calcaneus and tibia are not in a vertical position, so the connecting rod needs to be designed with a 140° angle to connect to the calcaneal bone needle 3 fixation. The connecting rod 1 is installed in the circular hole of the bone needle 3 fixing sleeve. The spring 6 passes through the connecting rod 1, and one end of the spring 6 is placed on the second step hole 13 of the anti-slip surface of the bone needle seat 5. The first step hole 10 of the rod clamp 7 passes through the connecting rod 1. The anti-slip surface of the rod clamp 7 matches the anti-slip surface of the bone needle seat 5. The butterfly nut 8 matches the threaded rod of the connecting rod 1 body, screws in and compresses the spring 6. Clamp the bone needle 3 into the V-shaped groove 17 and insert the connecting rod 1 into the semicircular groove 14. After adjusting the angle and position of the clamp, tighten the butterfly nut 8 to fix the connecting rod 1 and the bone needle 3 to achieve the reduction and positioning of the bones on both sides of the fracture site.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. An orthopedic external fixator, comprising a connecting rod (1), a fixing block assembly (2) and a bone pin (3), characterized in that: The connecting rod (1) is made of carbon fiber material, and the connecting rod (1) is designed in different shapes based on the anatomical functional positions required for fixation after fractures of the human elbow joint, wrist joint, knee joint, and ankle joint; The fixing block assembly (2) includes a clamping bolt (4), a bone needle seat (5), a spring (6), a rod clamp (7) and a butterfly nut (8). The spring (6) can pre-apply a certain force to the fixing block assembly (2) to facilitate initial fixation. The rod clamp (7) is provided with a first anti-slip tooth (9), and the bone needle seat (5) is provided with a second anti-slip tooth (15). The first anti-slip tooth (9) can cooperate with the second anti-slip tooth (15) on the bone needle seat (5) to fix the angle of the bone needle (3).

2. The orthopedic external fixator according to claim 1, characterized in that: The rod clamp (7) is provided with a first step hole (10), and the bone needle seat (5) is provided with a second step hole (13).

3. The orthopedic external fixator according to claim 2, characterized in that: The first step hole (10) cooperates with the second step hole (13) on the bone needle seat (5) to fix the position of the spring (6).

4. The orthopedic external fixator according to claim 1, characterized in that: The rod clamp (7) is provided with a third through hole (11), and the third through hole (11) cooperates with the connecting rod (1) to fix the position of the connecting rod (1), and the inner wall of the third through hole (11) is provided with anti-slip lines.

5. The orthopedic external fixator according to claim 1, characterized in that: The rod clamp (7) is provided with a first through hole (12), and the bone needle seat (5) is provided with a second through hole (16).

6. The orthopedic external fixator according to claim 5, characterized in that: The first through hole (12) and the second through hole (16) cooperate with the clamping bolt (4) and the butterfly nut (8) to lock the bone needle (3).

7. The orthopedic external fixator according to claim 1, characterized in that: The bone needle seat (5) is provided with a semicircular groove (14), and the clamping bolt (4) is provided with a V-shaped groove (17). The semicircular groove (14) cooperates with the V-shaped groove (17) to fix the position of the bone needle (3).

8. The orthopedic external fixator according to claim 1, characterized in that: The clamping bolt (4) is provided with an external thread (18), and the butterfly nut (8) is provided with an internal thread hole (19).

9. The orthopedic external fixator according to claim 8, characterized in that: The external thread (18) cooperates with the internal thread hole (19) to lock the fixed block assembly (2).

10. The orthopedic external fixator according to claim 1, characterized in that: The butterfly nut (8) is provided with a wing (20), and the wing (20) is used to lock the fixed block assembly (2).

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