Nail in femoral marrow

A bone marrow and internal nail technology, applied in the direction of internal fixator, internal bone synthesis, fixator, etc., can solve the problems of poor anti-rotation, large limb muscle damage, low self-locking force, etc., to reduce further damage and prevent splitting , the effect of easy reset

Inactive Publication Date: 2012-07-11
CHANGZHOU KANGDING MEDICAL INSTR
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Among the orthopedic medical devices in the prior art, there is a self-locking anti-rotation intramedullary nail, which is a quincunx-shaped intramedullary nail. The shape of the nail body is a quincunx-shaped structure. It is quite inconvenient to install and operate the side wings of the inner and outer nails. The interlocking expansion points of the inner and outer nails are not properly set, and their self-locking force is small, which sometimes makes the self-locking effect of the intramedullary nail weak. Limb muscle damage is too large, and it has the effect of putting pressure on the fracture site

Method used

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  • Nail in femoral marrow
  • Nail in femoral marrow

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Embodiment Construction

[0011] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0012] Such as figure 1 A femoral intramedullary nail shown, including material 002Cr 19 Ni 13 Mo 3 The hollow structure of the nail body 1, the front end of the nail body 1 is closed, and the rear end of the nail body 1 is respectively provided with a helical blade hole 2 and two circular rear locking nail holes on both sides of the helical blade hole 2 3. There are two front locking nail holes 4 on the front end of the nail body 1. The diameter of the front end of the nail body 1 is smaller than the diameter of the rear end of the nail body 1. The front end of the nail body 1 is provided with three circumferentially equally divided vertical holes. The sh...

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Abstract

The invention relates to the technical field of medical equipment, in particular to a nail in femoral marrow, which comprises a hollow-structure nail body made of 002Cr19Ni13Mo3. The front end of the nail body is in a contracting shape, a spiral blade hole and two round back-locking nail holes arranged on two sides of the spiral blade hole are respectively arranged on a back end section of the nail body, at least two front-locking nail holes are arranged on the front end section of the nail body, the tube diameter of the front end section of the nail body is smaller than that of the back end section of the nail body, and three circumferentially-equant longitudinal grooves are arranged on the front end section of the nail body. The nail in femoral marrow is locked through a single hole, easy to operate, capable of effectively avoiding cleavage of femoral necks in operation and easy to reset by being matched with a spiral blade and a fixed screw, can meet requirements for combination between femoral necks and femoral near-end fracture positions, and effectively reduces further damage on fracture between thighbones and thighbone ankles.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a femoral intramedullary nail. Background technique [0002] With the development of population aging, femoral neck base fractures, intertrochanteric and transtrochanteric fractures, high subtrochanteric fractures, subtrochanteric fractures, proximal femoral and shaft fractures on the same side, tumors and pathological fractures rate increased year by year. Femoral intramedullary nailing is used clinically to treat femoral and femoral intercondylar fractures. Intramedullary fixation conforms to biomechanical theory. It is firm and can be used for early functional exercise and early weight bearing to prevent bone shortening and avoid fractures. Axial and rotational deformities. [0003] Among the orthopedic medical devices in the prior art, there is a self-locking anti-rotation intramedullary nail, which is a quincunx-shaped intramedullary nail. The shape of the nail...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/72
Inventor 陈晓琥
Owner CHANGZHOU KANGDING MEDICAL INSTR
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