Semi-self-locking acetabulum posterior wall and posterior column anatomical plate

Abstract

The invention discloses a semi-self-locking acetabulum posterior wall and posterior column anatomical plate which comprises a steel plate main body, a self-locking sleeve and self-locking screws, wherein the steel plate main body is sequentially provided with a first fixing region, a first location region, a main fixing region, a second location region and a second fixing region, the main fixing region is provided with self-locking screw holes, the first fixing region and the second fixing region are provided with non-self-locking screw holes, and the first location region and the second location region are provided with location holes. The invention can be properly twisted and bended and is in convenient moulding so as to be better jointed to a skeleton to bear joint motion load, enable the fracture to be normally healed and reduce complications such as loosening, displacement, pains, bone stress shielding and the like at a later stage of fracture. The invention has the advantages ofhaving less internal stress and relatively according with acetabulum anatomy and biomechanics, enhances the success rate of a fracture internal fixation operation, avoids moulding in the operation, saves the operation time, reduces the blood loss in the operation, reduces the anesthetic time and lowers the operation risks.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a semi-self-locking acetabular posterior wall and posterior column anatomical steel plate used in orthopedic internal fixation operations. Background technique [0002] With the development of our society, traffic accidents, construction industry and industrial injuries caused by high-energy severe acetabular fractures are increasing day by day, while traditional conservative treatment has a disability rate as high as 50% to 60%, and patients have many complications left behind, such as low back pain , hip arthritis joint pain, gluteal sacral pain, abnormal gait, neurological sequelae, and even loss of working ability. If these diseases are not handled properly, it will not only prolong the patient's treatment time, but also bring mental trauma and economic loss to the patient, seriously affect the quality of life and work of the patient, and even cause disastrous consequ...

AI Technical Summary

Problems solved by technology

[0004] During the treatment of acetabular fractures, due to the irregular and complex anatomical shape of the acetabulum and pelvis, the size and shape of the soft tissue around the bones also limit the size and strength of the implant, which will bring great harm to surgical reduction and internal fixation after the fracture. great difficulty and risk

The cost of imported materials is high, making patients spend a lot on implant materials, accounting for about 46% of the total hospitalization expenses

Moreover, the titanium alloy and stainless steel plates of the pelvis and acetabulum currently used at home and abroad, including memory alloy internal fixation systems, all have a shortcoming: they do not conform to the biomechanical transmission system of the pelvis and acetabulum, that is, the intraosseous mechanical route

3. The wire screw binding method is rarely used clinically due to its poor biomechanical stability; 4. The memory alloy device has the disadvantages of more soft tissue stripping and more local blood supply damage during the operation. Needle staples and clamping nails There are a large number of them, and the memory alloy device has a weak reset effect on the hip joint fracture, and its immediate stability is weaker than that of the reconstruction plate. Once it needs to be taken out, it is more difficult

Although this utility model can solve the problem of reshaping due to individual differences in different patients, it is still difficult to operate without auxiliary equipment when installing the steel plate; moreover, the anti-slip performance of the screw-in end is poor, and there are still potential safety hazards during the operation

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