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Interlocking anti-settlement proximal femur intramedullary nail

A technology of proximal femur and intramedullary nail, applied in the field of intramedullary nail, can solve problems such as operation failure, and achieve the effect of improving holding force and preventing rotation

Pending Publication Date: 2017-12-08
BEIJING FULE SCI & TECH DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For such fractures, if the conventional intramedullary nail (proximal diameter 10-14mm) proximal reconstruction nail system is used, the operation fails due to osteoporosis and the "Z" effect

Method used

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  • Interlocking anti-settlement proximal femur intramedullary nail
  • Interlocking anti-settlement proximal femur intramedullary nail
  • Interlocking anti-settlement proximal femur intramedullary nail

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0032] Such as Figure 1-11 As shown, an interlocking anti-subsidence proximal femoral intramedullary nail according to an embodiment of the present invention includes a main nail 2, and the upper part of the main nail 2 is pierced with two helical cutters 1 arranged obliquely upwards. The upper parts of the helical cutters 1 are provided with helical blades 29 , and the lower ends of the two helical cutters 1 are connected to and locked by the connecting seat 4 .

[0033] In a specific embo...

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Abstract

The invention discloses an interlocking anti-settlement proximal femur intramedullary nail which comprises a main nail. Two obliquely upward screw cutters are arranged on the upper portion of the main nail in a penetrated manner, screw blades are arranged on the upper portions of the two screw cutters, and the lower ends of the screw cutters are mutually connected and locked through a connecting seat. The intramedullary nail has the advantages that squeezing-out of greater trochanter bone blocks caused by rotation of fracture portions can be prevented, the intramedullary nail is applicable to osteoporosis patients, and holding force is effectively improved.

Description

technical field [0001] The invention relates to the technical field of intramedullary nails, in particular to an interlocking anti-subsidence proximal femoral intramedullary nail. Background technique [0002] The femoral trochanter fracture is the most common fracture in the elderly. Since the elderly generally suffer from poor physical condition, many medical diseases, and osteoporosis, they cannot afford major trauma surgery. Therefore, some medical institutions have designed some The minimally invasive treatment internal fixation devices for this fracture, such as the PFNA system of AO Foundationd and the Intertan system of SimithNephew Company, due to design reasons, the diameter of the nail tail of these systems is more than 16MM, which is independent of the presence of the greater trochanter. For intertrochanteric fractures at the fracture line, the large trochanteric bone fragments are likely to be squeezed away during implantation, resulting in less contact surface ...

Claims

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Application Information

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IPC IPC(8): A61B17/72A61B17/74
CPCA61B17/72A61B17/74
Inventor 张建樊国平朱德鹏仝树信
Owner BEIJING FULE SCI & TECH DEV