Quick positioning device for femoral-nail entry point

Abstract

The invention relates to a quick positioning device for a femoral-nail entry point. The quick positioning device for the femoral-nail entry point comprises a rectangular metal frame, a fixing rod anda connecting rod, wherein the fixing rod is connected on an operating table, the two ends of the connecting rod are connected with the rectangular metal frame and the fixing rod through angle adjusting pieces capable of adjusting the angle respectively, and meanwhile guiding needle grooves and a needle threading groove which are located in the same place are formed in the rectangular metal frame,wherein guiding needles conveniently move in the guiding needle grooves and the needle threading groove. The quick positioning device for the femoral-nail entry point has the advantages that quick positioning of a needle inserting point can be achieved before operating or in the operating process through the positioning device, the puncturing number of times for patient leg positioning during needling inserting is decreased, and patient pains are reduced; meanwhile, the height and the angle of device are adjusted for unsuitable positions, and the quick positioning device is simple in structureand quite convenient to assemble and disassemble.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a fast locator for the insertion point of a femoral intramedullary nail. Background technique [0002] Fracture of femoral shaft and proximal femur is a very common fracture. Intramedullary nail fixation is a very common treatment method with good curative effect at present. There are two kinds of operation methods: open reduction and closed reduction. Reduction can achieve a good fracture reduction, but due to the destruction of the local blood supply of the fracture, it is easy to cause delayed union or nonunion of the fracture, an increase in surgical blood loss and a significant increase in the chance of infection. End blood circulation, so the healing time is shorter than open reduction, the healing effect is better, and blood loss and postoperative infection can be reduced at the same time. [0003] Although closed reduction intramedullary nailing has the above advantages, i...

AI Technical Summary

Problems solved by technology

[0003] Although closed reduction intramedullary nailing has the above-mentioned advantages, it is necessary to insert the guide pin into the medullary cavity at the proximal end of the fracture from the apex of the greater trochanter, and enter the medullary cavity at the distal end of the fracture through the fracture end. It is very difficult to insert the guide wire into the proximal medullary cavity of the fracture at the apex of the greater trochanter, specifically in the following aspects: First, it is difficult to determine the insertion point, because the intramedullary nail is inserted at the junction of the anterior middle third of the apex of the greater trochanter Slightly medial, because the apex of the greater trochanter is attached to the gluteus medius and gluteus minimus, and its medial side will soon continue to the femoral neck with a steep slope, so the area of ​​the needle insertion point is very small, and it is not easy to determine. The tip of the middle needle is also easy to shift, and incorrect needle insertion point can lead to difficulties in intramedullary nail placement, and even iatrogenic fractures; secondly, if it is a femoral shaft fracture, the proximal fracture is due to muscle traction and perineal resistance traction Under the obstruction of the column, it often shifts outward and upward, so that the apex of the greater trochanter is more inclined to the deep part of the body, and the angle between the direction of needle insertion and the longitudinal axis of the proximal fracture becomes smaller, making it difficult to insert the needle

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