Proximal femur intramedullary nail
A proximal femur and intramedullary nail technology, applied in the field of intramedullary nails, can solve the problems of unfavorable recovery of wounds, easy rotation of lag screws, etc., and achieve the effect of ensuring safety and stability
Pending Publication Date: 2018-06-29
CHANGZHOU ORTHMED MEDICAL INSTR
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- Application Information
AI Technical Summary
Problems solved by technology
The existing intramedullary nails for the proximal femur are prone to rotation during actual use because the lag screw hole or the cross section of the lag screw is circular, which is not conducive to the recovery of the injured part.
Method used
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[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] In the present invention, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
[0020] like Figure 1-4 As shown, it is the proximal femoral intramedullary nail of the present invention, comprising a main nail 1, a lag screw 2, a stopper 3 ...
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The invention belongs to the technical field of intramedullary nails, and particularly relates to a proximal femur intramedullary nail. The proximal femur intramedullary nail comprises a main nail, alag screw and a limiting piece; a lag screw hole is formed in the proximal end of the main nail, the lag screw runs through the lag screw hole, a through hole communicated with the lag screw hole is formed inside the proximal end of the main nail, the limiting piece is contained inside the through hole, two symmetrical sliced planes are arranged on the outer wall of the portion, running through the lag screw hole, of the lag screw, a limiting groove is formed in one end of the limiting piece, the limiting groove stretches into the lag screw hole, the section of the limiting groove is matched with the section of the portion, running through the lag screw hole, of the lag screw in shape, and the lag screw runs through the limiting groove. According to the proximal femur intramedullary nail,rotation of the lag screw is avoided, recovery of an injured portion is facilitated.
Description
technical field [0001] The invention belongs to the technical field of intramedullary nails, in particular to a proximal femoral intramedullary nail. Background technique [0002] When the bones of the human body are fractured, intramedullary nails are usually used to connect the broken bones. Intramedullary nails generally refer to long steel nails placed in the bone marrow cavity. For example, for the femur and tibia of the lower limbs, after opening a wound at one end of the bone and inserting the intramedullary nail, a lag screw and a fixed nail are respectively installed at the proximal end and the distal end of the intramedullary nail to prevent the rotation and shortening of the bone. In the existing intramedullary nails used for the proximal femur, the lag screw hole or the cross-section of the lag screw is circular, and the lag screw is prone to rotation during actual use, which is not conducive to the recovery of the injured part. Contents of the invention [00...
Claims
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Login to View More IPC IPC(8): A61B17/72A61B17/74
CPCA61B17/7283A61B17/74
Inventor 陈长胜方建辉
Owner CHANGZHOU ORTHMED MEDICAL INSTR