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Bone grafting device for tubular bone defect healing

A technology for bone defect and bone grafting, applied in bone implants, medical science, surgery, etc., can solve the problems of high price and inaccurate treatment effect of cases, and achieve the effect of promoting fracture healing, good clinical effect and convenient use.

Inactive Publication Date: 2012-03-28
张英泽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such drugs are expensive, and in some cases, the treatment effect is inaccurate

Method used

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  • Bone grafting device for tubular bone defect healing
  • Bone grafting device for tubular bone defect healing
  • Bone grafting device for tubular bone defect healing

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Experimental program
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Embodiment Construction

[0014] The present invention is made up of outer sleeve 2, inner sleeve 3, connecting rod 4.

[0015] As shown in the figure, the two ends of the outer sleeve 2 are sleeved on the two ends of the tubular bone defect requiring bone grafting, and fixed by screws 5 .

[0016] As shown in the figure, the inner sleeve 3 is located in the outer sleeve 2, the connecting rod 4 is inserted into the inner sleeve 3, the diameter of the connecting rod 4 matches the inner diameter of the inner sleeve 3, and the two ends of the connecting rod 4 are inserted into the tubular In the medullary cavity of bone 1. The connecting rod 4 is a rod-shaped or column-shaped structure, and an intramedullary nail can generally be used.

[0017] The figure shows that the walls of the inner sleeve and the outer sleeve have a mesh structure, and the inner sleeve and the outer sleeve are made of degradable magnesium alloy. The degradable magnesium alloy material can remove bone graft and enhance the stabilit...

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Abstract

The invention relates to a bone grafting device for tubular bone defect healing, and belongs to the technical field of orthopedic medical devices. The bone grafting device is used for grafting tubular bones to promote the healing of the tubular bones, and comprises an outer sleeve, an inner sleeve and a connecting rod, wherein the inner diameter of the outer sleeve is matched with the outer diameter of the two ends of a tubular bone defect part required for bone grafting, and the inner sleeve is positioned in the outer sleeve; the connecting rod is inserted in the inner sleeve, and the diameter of the connecting rod is matched with the inner diameter of the inner sleeve; and the length of the connecting rod is greater than that of the inner sleeve, and the inner sleeve and the outer sleeve are made of biodegradable magnesium alloy. In the bone grafting device, the connecting rod in the inner sleeve can firmly connect the two ends of a defective tubular bone, a high-quality autologous cancellous bone is filled between the inner sleeve and the outer sleeve to simultaneously play roles of bone grafting and reinforced fixing, and the biodegradable magnesium alloy has a function of inducing bone formation, thereby the fracture healing is promoted. The bone grafting device has the advantages of firm bone grafting, high intensity, early ambulation for patients, and good clinical effect.

Description

technical field [0001] The invention relates to a bone grafting device used in the healing process of treating tubular bone defects, and belongs to the technical field of orthopedic medical equipment. Background technique [0002] Fracture nonunion due to defect is a common orthopedic disease, and the incidence of fracture nonunion in different parts is inconsistent. According to relevant literature, the nonunion rate of long tubular bone fractures in extremities is about 1-2%; the nonunion rate of multiple fractures is about 7-10%; Fractures at special sites, such as nonunion of femoral neck fractures, have an incidence rate as high as 7-33%. The treatment of fracture nonunion is one of the challenges faced by orthopedic surgeons. [0003] There are many treatment methods for fracture nonunion caused by defect, among which bone grafting is the most commonly used and effective treatment method. At present, the bone grafting method for tubular bone is bone grafting with ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56A61F2/28
Inventor 张英泽王娟陈伟
Owner 张英泽
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