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Proximal femoral intramedullary nail system

A technology of proximal femur and intramedullary nailing, which is applied in the field of medical devices, can solve the problem of high probability of fixation failure, achieve the effect of improving the success rate and preventing loss of reduction

Active Publication Date: 2022-01-14
PEKING UNIV THIRD HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a proximal femoral intramedullary nail system, which can fix combined fractures of the medial wall and lateral wall at the same time, so as to solve the problem of high failure probability of internal fixation of existing intertrochanteric fractures

Method used

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  • Proximal femoral intramedullary nail system
  • Proximal femoral intramedullary nail system
  • Proximal femoral intramedullary nail system

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Embodiment Construction

[0036] To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.

[0037] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as figure 1 As shown, this embodiment provides a proximal femoral intramedullary nail system, including a main nail 1 , a transverse locking nail 2 , a lag screw 3 and a protective plate 4 for the lateral w...

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Abstract

The invention relates to a proximal femur intramedullary nail system. The proximal femur intramedullary nail system comprises a main nail, transverse locking nails, a lag screw and a proximal femur outer side wall protection plate; the near end of the main nail is provided with a first screw hole used for placing a lag screw, a second screw hole located at the near end of the first screw hole and a third screw hole located at the far end of the first screw hole; the second screw hole is used for receiving the transverse locking nail for fixing a bone block on the outer side wall; the third screw hole is used for receiving the transverse locking nail for fixing a bone block on the inner side wall; the lag screw is located in the first screw hole, and the head of a screw body of the lag screw is provided with a threaded part; the proximal femur outer side wall protection plate is arranged on the proximal femur outer side wall and fixed to the proximal femur through the lag screw and the at least one transverse lock nail, and the problem that the failure probability of existing intertrochanteric fracture internal fixation is relatively high is solved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a proximal femoral intramedullary nail system. Background technique [0002] Intertrochanteric fracture is a common lower extremity fracture in the elderly. Surgical treatment is usually adopted. Although surgical techniques have been continuously improved and internal fixation materials have been continuously updated, the occurrence of internal fixation failure has not decreased. Internal fixation failure is catastrophic for the elderly, and many patients cannot tolerate revision surgery, so internal fixation failure should be avoided to the greatest extent. The integrity of the medial wall of the femur is a key indicator for judging the stability of intertrochanteric fractures. Both the classic AO / OTA classification and the Evans classification regard the integrity of the medial wall as an important basis for distinguishing stable fractures from unstable fractures. The surgical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/72
CPCA61B17/72A61B17/7291
Inventor 周方吕扬
Owner PEKING UNIV THIRD HOSPITAL
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