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A bone handling device for large bone defects

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

Inactive Publication Date: 2018-07-06
AFFILIATED YONGCHUAN HOSPITAL OF CHONGQING MEDICAL UNIV
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  • Summary
  • 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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  • A bone handling device for large bone defects
  • A bone handling device for large bone defects
  • A bone handling device for large bone defects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 as 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.

[0043] 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 structure of the tibia of the human body, and two ends are provided for matching with common fixation screws. Lock hole 13. The two ends of the intramedullary main nail 1 are provided with fixing screw holes 11, and the middle part is provided with a long hole 12 for carrying along the axial direction; it also includes a fixing bracket 4 and several fixing screws 2; the rear ends of the fixing screws 2 are connected to the The fixed bracket 4 is connected, and the front end is m...

Embodiment 2

[0051] Example 2 as Figure 10 to Figure 18 As shown in the figure, it is suitable for the large-segment humerus bone defect handling operation. According to the different bone conditions of patients, the main intramedullary nail can be set into three types.

[0052] The first is for patients with osteoporosis, such as Figure 10 to Figure 13 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 that matches the anatomical structure of the humerus of the human body, and two ends are provided for matching with common fixing screws. Locking hole 13; Its proximal end is also provided with the screw blade 15 that enters knife hole 14 and cooperates with knife 14 holes. The two ends of the intramedullary main nail 1 are provided with fixing screw holes 11, and the middle part is provided with a long hole 12 for carrying along the axial direction; it also includes a fixing bracket 4 and s...

Embodiment 3

[0060] Example 3 as Figure 19 to Figure 27 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.

[0061] The first is for patients with osteoporosis, such as Figure 19 to Figure 22As 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, and the central part is provided with a long hole 12 arranged in the axial direction. The main intramedullary nail 1 is straight, with locking holes 13 for matching with ordinary fixing screws at both ends; all the locking holes 13 and fixing screw holes 11 are located on the same plane; the main intramedullary nail 1 is also An oblique locking hole 13 is provided, and the angle between it and the main intramedullary nail 1 is 60° or 120°. It also includes a fixing bracket 4 and s...

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PUM

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Abstract

The invention discloses a bone transport device used for massive bone defects. The device comprises an intramedullary main nail used for being beaten into sclerotin in the axial direction, and the two ends of the intramedullary main nail are provided with fixing screw holes. The device further comprises a fixing support and a plurality of fixing screws. The rear ends of the fixing screws are connected with the fixing support, and the front ends of the fixing screws are matched and connected with the fixing screw holes in the intramedullary main nail. The device further comprises a plurality of transport needles capable of moving in the axial direction of the intramedullary main nail, one end of each transport needle is implanted into a bone block, and the other end of each transport needle is connected to the fixing support.

Description

technical field [0001] The invention relates to a device for treating large-segment bone defects 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, so how to solve th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/72A61B17/66A61B17/88
CPCA61B17/66A61B17/72A61B17/8852A61B2017/564
Inventor 马坤龙栾和旭栾富钧杨帆
Owner AFFILIATED YONGCHUAN HOSPITAL OF CHONGQING MEDICAL UNIV
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