Hip joint fracture steel plate

Abstract

The invention discloses a hip joint fracture steel plate, and belongs to the field of medical instruments; according to the technical scheme, the hip joint facture steel plate comprises a steel platemain body fixed to a hip joint. The invention is featured in that a plurality of threading holes penetrating through the steel plate main body are formed in the steel plate main body; a cable used forbeing bound to the femur is arranged in the threading hole in a penetrating mode. The steel plate main body is detachably connected with a locking piece capable of simultaneously extending into one group of two threading holes; at least two rivets used for fixing are fixedly arranged on the steel plate main body, at least two barb-shaped protrusions with openings facing the steel plate main bodyare arranged on the rivets, fixing coatings with uneven structures are arranged on the side walls of the rivets, and the steel plate main body is made of pure titanium or titanium alloy. The inventionachieves the effect of reducing the potential health hazard of a patient.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a hip joint fracture steel plate. Background technique [0002] The known lateral plate internal fixation device technologies applied to intertrochanteric fractures mainly include: three-wing nail with lateral plate, Maxwell's goose-head nail and pressurized sliding goose-head nail. The three-wing nail with side plate is a combination of the steel nail and the straight steel plate, forming a fixed neck-shaft angle. It is difficult to operate, and the steel nail is prone to bending or breaking. It may also happen that the nail tip penetrates the femoral head and enters the joint cavity. Question: Maxwell's goose-head nails are hinged with three-wing nails and short-arc steel plates, and the angle of the neck shaft can be adjusted. The operation is easier than the former, but the joint between the three-wing nails and the short-arc steel plates is easy to separate, and the nail t...

AI Technical Summary

Problems solved by technology

The three-wing nail with side plate is a combination of the steel nail and the straight steel plate, forming a fixed neck-shaft angle. It is difficult to operate, and the steel nail is prone to bending or breaking. It may also happen that the nail tip penetrates the femoral head and enters the joint cavity. Question: Maxwell's goose-head nails are hinged with three-wing nails and short-arc steel plates, and the angle of the neck shaft can be adjusted. The operation is easier than the former, but the joint between the three-wing nails and the short-arc steel plates is easy to separate, and the nail tip also pops out. problem; pressurized sliding goose-head nail, structurally similar to the combination of three-wing nail with side plate and Maxwell goose-head nail, is currently the most used device for the treatment of femoral intertrochanteric fractures, with good strength (up to 280kg pressure), However, the operation is more complicated, the amount of bleeding is more, and there is also the problem of cutting the femoral head by the nail

The above-mentioned three kinds of instruments are all internal fixators that must pass through the femoral neck to the femoral head to fix the proximal fracture, so X-ray examination must be coordinated during the operation, so that the operator passively accepts the cumulative radiation damage, and there are femoral fractures to varying degrees. The nail tip of the bone pops out or the nail cuts the femoral head, and because the internal fixation is not located on the tension band between the femoral trochanters, the patient is more likely to have coxa varus and other complications. In addition, when the patient has experienced hip After replacement, implants (femoral stem, etc.) were added in the femur, and the steel plate was fixed on the femur rashly through steel nails, which easily interfered with the implant, and even electrolytic reactions occurred between different materials. Intraoperative and postoperative work will have a great impact, so it is necessary to replace a form of fixed plate

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