Intramedullary nail fixation device for fractured near end of thighbone

A fixation device, proximal femur technology, applied in the direction of internal fixator, fixator, internal bone synthesis, etc., can solve the problem of screw cutting out, achieve the effect of preventing femoral head rotation, high stability, and preventing coxa varus

Active Publication Date: 2009-12-16
KANGHUI MEDICAL INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of proximal femur fracture intramedullary nail fixation device for above-mentioned inadequacy, has solved above-mentioned complication and the problem of screw cutting out

Method used

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  • Intramedullary nail fixation device for fractured near end of thighbone
  • Intramedullary nail fixation device for fractured near end of thighbone
  • Intramedullary nail fixation device for fractured near end of thighbone

Examples

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Embodiment Construction

[0024] Refer to attached Figure 1-6 The intramedullary nail fixation device for proximal femoral fractures includes a main intramedullary nail 1, a combined locking nail 2 and a cortical bone screw 3, and has a full thread 22; the main intramedullary nail 1 has a longitudinal axis 16, a proximal end 15 and a The distal end 21 of the tip, the proximal end 15 at an angle to the longitudinal axis 16 and having means for coupling to an insertion device, said proximal end 15 comprising a through hole 18 for mounting the combination locking nail 2, said through hole 18 intersects with the longitudinal axis 16 to form an axis at an angle of 110° to 150°, and the distal end 21 includes a transverse long waist through hole 20 with an axis and a transverse round through hole 19 with an axis;

[0025] The combined locking nail 2 has a head 14, a locking nail distal end 13, a sleeve 10, a connecting block 50, an internal thread with the external thread 7 of the connecting block 50, a sym...

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PUM

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Abstract

The invention provides an intramedullary nail fixation device for fractured near end of thighbone and relates to an intramedullary nail fixation device for processing fractured near end of thighbone; the intramedullary nail fixation device comprises a main intramedullary nail, a combined lock pin and a cortical bone screw; the main intramedullary nail is provided with a longitudinal shaft, a near end and a remote end with a tip end, the near end and the longitudinal shaft form a certain angle and are provided with a part for being connected to an insertion device; the near end comprises a through hole for assembling the combined lock pin, the through hole and the longitudinal shaft are intersected into an axis with 110-150 degrees; the remote end comprises a transverse long-waist through hole with axis and a transverse round through hole with axis, the through holes both can contain the cortical bone screw; the combined lock pin is provided with a head part, a lock pin remote end, a sleeve, a connecting block with internal thread screws matched with the connecting block with external thread screws, a symmetrical sliding plane, a raised clamping block and a nut cap with tooth form on the remote end surface; the shape of the head part is a spiral cutter shape, and the shape of the lock pin remote end is a tail part of the end surface with tooth form, and a platform is arranged on the lock pin remote end.

Description

technical field [0001] The invention relates to an intramedullary nail fixation device for proximal femur fractures, which relates to an intramedullary nail fixation device for treating proximal femoral fractures. Background technique [0002] The structure of the traditional intramedullary nail is that the proximal end is fixed with a screw, which is screwed into the femoral head and neck. Its disadvantage is that a single thick lag screw is used for fixation at the proximal end. In some cases of osteoporosis and unstable fractures, the screw cuts the femoral head. Collapse of the femoral neck screw, femoral neck screw fracture, femoral shaft fracture near the tail of the screw, etc. And the compression screw cuts the femoral head and osteoporosis and there may be potential rotation and shearing force at the fracture end. Another type of intramedullary nail is known from CN1378438A. This intramedullary nail adopts double nails to fix at the proximal end. They are lag scre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/72
CPCA61B17/744A61B17/7225
Inventor 杨利波山卫东王志敏王彤杨康蒋庆幸丁伟王爱平蒋凯崔建培彭豪
Owner KANGHUI MEDICAL INNOVATION
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