Static power exchange thighbone intramedullary nail

Abstract

The invention discloses a static power exchange thighbone intramedullary nail, which comprises a nail main body, wherein a coronal plane at the far end of the nail main body is provided with a first sliding lock hole and a third sliding lock hole; a vertical plane at the far end of the nail main body is provided with a second sliding lock hole and a fourth sliding lock hole; the first sliding lock hole, the second sliding lock hole, the third sliding lock hole and the fourth sliding lock hole are long holes; the end part of the long holes are circular-arc-shaped; the third sliding lock hole is longer than the first sliding lock hole; the fourth sliding lock hole is longer than the second sliding lock hole; the vertical plane at the far end of the nail main body is provided with a positioning platform; and the center of the positioning platform is provided with a third static lock hole. Due to the adoption of the static power exchange thighbone intramedullary nail disclosed by the invention, early static fixation of bones can be realized, motorization can be performed in case of delayed healing of bone fractures, static fixation is performed after motorization is performed appropriately, motorization can be performed once again, static fixation is performed after motorization is performed appropriately, and controllable adjustment is performed on dynamic and static fixation, so that rapid healing of bone fractures is facilitated.

Description

technical field [0001] The invention relates to an intramedullary nail, in particular to an intramedullary nail that can achieve early static fixation of the bone, can be powered, and can be statically fixed after the dynamic is in place, and can be powered again, and can be statically fixed after the dynamic is in place. The utility model relates to a static and dynamic exchange type femoral intramedullary nail for controllable adjustment of dynamic and static fixation so as to promote fast healing of fractures, and belongs to the technical field of medical devices. Background technique [0002] Locking intramedullary nails are currently the mainstream internal fixation equipment for treating long tubular bone fractures in the field of orthopedics. They overcome the shortcomings of ordinary intramedullary nails in their poor torsion resistance, and are the direction of development in the treatment of fractures of the extremities. It can effectively prevent the shortening of...

AI Technical Summary

Problems solved by technology

In clinical use, it is found that after the distal static locking nail is removed, the distal end retains a sliding locking nail in the sagittal plane and coronal plane, which can eliminate the rotational displacement, but because the distal locking holes are both Long hole, after dynamization, there is still a certain degree of swing in the sagittal and coronal planes, and the fracture alignment is not as good as before dynamization

Though have not found the case that therefore influences fracture healing, but still there are deficiencies

The medullary cavity at the distal end of the femur is larger. If the design of the intramedullary nail does not change, the above-mentioned swing may be greater, which is not conducive to fracture healing

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