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Bone transport apparatus for treatment of large segmental defect of femur

A technology for transporting a device and segmental bone, which is applied in the field of devices for treating large segmental bone defects of the femur, and can solve the problems of poor mechanical stability of a single-rod external fixation bracket, inability to bear early weight on the affected limb, and inability to adjust the force line, etc., so as to avoid the force line. Poor, convenient clinical care, good patient compliance

Inactive Publication Date: 2016-04-13
AFFILIATED YONGCHUAN HOSPITAL OF CHONGQING MEDICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the mechanical stability of the single-rod external fixator is poor, the line of force cannot be adjusted, and the affected limb cannot bear weight in the early stage. In the later stage, complications such as poor line of force, disuse osteoporosis, refracture, delayed bone union or even nonunion may occur.

Method used

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  • Bone transport apparatus for treatment of large segmental defect of femur
  • Bone transport apparatus for treatment of large segmental defect of femur
  • Bone transport apparatus for treatment of large segmental defect of femur

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the present invention is described in detail.

[0028] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] Such as Figure 1 to Figure 9 As shown, it is suitable for the removal of large femoral bone defects. According to the different bone conditions of patients, the main intramedullary nail can be set into three types.

[0030] The first is for patients with osteoporosis, such as Figure 1 to Figure 4 As shown, the present invention includes an intramedullary main nail 1 for axially penetrating bone. The two ends of the intramedullary main nail 1 are provided with fixing screw holes 11, a...

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Abstract

The invention discloses a bone transport apparatus for treatment of large segmental defect of femur. The bone transport apparatus comprises a main intramedullary nail, a fixation support, a plurality of set screws and a plurality of transport needles. The intramedullary nail used for being driven into bones axially is linear and is provided with lock holes at two ends, and the lock holes are matched with general set screws. Two ends of the main intramedullary nail are provided with set screw holes. The lock holes and the set screw holes are formed in the same plane. Rear ends of the set screws are connected with the fixation support while front ends of the set screws are matched and connected with the set screw holes in the main intramedullary nail. The transport needles, with one ends being implanted into bones needing transport and the other ends being connected with the fixation support, are capable of moving along the axial direction of the main intramedullary nail.

Description

technical field [0001] The invention relates to a device for treating large segmental bone defect of femur by bone transport. Background technique [0002] Large-segment long bone defect refers to a bone defect in which the fracture cannot heal itself or can only regenerate 10%, generally 2-3 times the diameter of the involved long bone. Large-segment bone defects are usually caused by high-energy trauma, infection, tumors, etc., often accompanied by limb shortening, deformity, osteomyelitis, muscle atrophy, and stiffness of adjacent joints. Its repair treatment has always been one of the biggest problems in the field of orthopedics. According to statistics, in Germany, bone graft surgery is one of the top 50 treatments that patients receive most frequently; in the United States, about 800,000 patients need bone graft surgery every year; 3 million cases; large bone defects have brought huge physical and mental injuries and economic burdens to patients, so how to solve this ...

Claims

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Application Information

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IPC IPC(8): A61B17/56A61B17/72A61B17/66A61B17/74
CPCA61B17/66A61B17/7233A61B17/7241A61B17/74A61B2017/564
Inventor 马坤龙栾和旭栾富钧杨帆
Owner AFFILIATED YONGCHUAN HOSPITAL OF CHONGQING MEDICAL UNIV
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