Cross locking marrow nail

Abstract

The invention discloses an interlocking intramedullary nail, and relates to an interlocking intramedullary nail of which the far end and the near end are provided with oblique interlocking positioning screw holes, is suitable to be used as an implanted interlocking intramedullary nail for internal fixation of fracture of femoral shaft and collum femoris and femoral shaft combined fracture, and can change the interlocking mode at any time in use, namely a standard locking mode or a reestablished locking mode. The interlocking intramedullary nail is provided with a nail shank, the nail shank is provided with the far end and the near end, and the inside of the nail shank is provided with a through hole; the near end of the nail shank is provided with two reestablished oblique interlocking nail holes and a thighbone locking oblique interlocking hole which is obliquely intersected with the center of the adjacent reestablished oblique interlocking nail hole, and outlets of the nail holes are combined into one hole; the far end of the nail shank is provided with a power pressurizing lockhole and a lockhole; skew angles between the two reestablished oblique interlocking nail holes and a central axis of the nail shank are between 48 and 52 DEG; an inclination angle between the thighbone locking oblique interlocking hole and the central axis of the nail shank is between 44 and 46 DEG; and upward inclination angle of the far end of the nail shank is between 4 and 6 DEG, and the inclination angle toward one side of the far end is between 5 and 8 DEG.

Description

technical field [0001] The interlocking intramedullary nail of the present invention relates to an interlocking intramedullary nail with oblique locking screw holes at the distal and proximal ends, suitable for internal fixation of femoral shaft fractures, femoral neck and femoral shaft combined fractures, and interlocking implantation The intramedullary nail can change the locking mode at any time during use, that is, the standard locking mode or the reconstruction locking mode. Background technique [0002] At present, the internal fixation implant for femoral shaft fracture surgery is the standard femoral interlocking intramedullary nail, and the standard femoral locking mode is performed with special surgical instruments. When the femoral neck and femur are fractured at the same time, the reconstruction interlocking intramedullary nail is used, and another special surgical instrument is required for femoral locking and femoral neck reconstruction locking. The reconstruct...

AI Technical Summary

Problems solved by technology

When the femoral neck and femur are fractured at the same time, the reconstruction interlocking intramedullary nail is used, and another special surgical instrument is required for femoral locking and femoral neck reconstruction locking. The reconstruction interlocking intramedullary nail is implanted from the pear socket into the femoral medullary cavity , easy to damage the femoral neck and even cause cracking

Moreover, a large incision needs to be made on the skin and bone, and the operation time is relatively long, which brings unnecessary pain to the patient

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