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Bone carrying device for large segmental bone defect of tibia

A handling device and tibial technology, applied in internal bone synthesis, medical science, external fixator, etc., can solve problems such as poor mechanical stability of single-rod external fixator, inability to bear early weight on the affected limb, and inability to adjust the line of force, etc., to avoid Poor line of force, convenient clinical care, and good patient compliance

Inactive Publication Date: 2017-06-20
AFFILIATED YONGCHUAN HOSPITAL OF CHONGQING MEDICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 carrying device for large segmental bone defect of tibia
  • Bone carrying device for large segmental bone defect of tibia
  • Bone carrying device for large segmental bone defect of tibia

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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] like Figure 1 to Figure 9 As shown, it is suitable for the operation of large segmental bone defect in the tibia, and three types of main intramedullary nails can be set according to the different bone conditions of patients.

[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 driving into the bone. The intramedullary main nail 1 has a width consistent with the anatomical...

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Abstract

The invention discloses a bone carrying device for a large segmental bone defect of a tibia. The device comprises a main intramedullary screw, a fixed support, a plurality of fixed screws, and a plurality of carrying needles capable of moving axially along the main intramedullary screw, wherein the main intramedullary screw can be axially nailed into the sclerotin and has the size matched with that of the anatomical structure of the human tibia; locking holes matched with the common fixed screws are formed in two ends of the main intramedullary screw; fixed screw holes are formed in two ends of the main intramedullary screw; the rear ends of the fixed screws are connected with the fixed support; the front ends of the fixed screws are in matched connection with the fixed screw holes in the main intramedullary screw; one end of each carrying needle is implanted into a bone needing to slip; and the other ends of the carrying needles are connected onto the fixed support.

Description

technical field [0001] The invention relates to a device for treating the bone defect of large segment of tibia by using bone transport. Background technique [0002] A large segmental defect of a long bone is one in which the fracture does not heal spontaneously or only regenerates 10% of the bone, typically 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, ...

Claims

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Application Information

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