Bone Graft Device for Repairing Large Bone Defects

Abstract

The invention relates to a bone grafting device for repairing large segmental bone defects. The bone grafting device comprises a bone defect area formed between two bone stumps, wherein a mesh cannula with two ends connected with the two bone stumps respectively is arranged on the bone defect area; an osteogenesis filler is arranged in the cannula; a vacuum aspiration tube is arranged; one end of the vacuum aspiration tube is connected with a vacuum aspiration machine; the other end of the vacuum aspiration tube is inserted into the filler so as to provide vacuum environment for the filler osteogenesis. According to the bone grafting device for repairing the large segmental bone defects, bones are grafted in the cannula, so that the bone formation has directionality, the effective osteogenesis quantity is increased, soft tissues in the bone defect area are prevented from entering into bone grafting blocks, and bone growth factors can enter smoothly; the mechanical stretching of cells is caused in the defect area through vacuum, the growth of the cells and granulation tissues is promoted, and the expression of the cell factors such as TGF (Transforming Growth Factor) and VEGF (Vascular Endothelial Growth Factor) is promoted, so that the aim of quick union is achieved.

Description

technical field [0001] The invention relates to a bone grafting device, in particular to a bone grafting device for repairing large bone defects. Background technique [0002] At present, there are several methods for repairing large bone defects. The first one is autologous bone grafting, which has the best effects of osteoconduction, osteoinduction and osteogenesis. However, due to limited bone supply and poor bone strength, it cannot It is suitable for the reconstruction of bone defects in the load-bearing area; the second is the autologous bone graft anastomosed with blood vessels, which has a good effect on the long bone defects of the extremities that are difficult to repair with traditional bone grafting, but the amount of bone supply is limited, and it has caused serious damage to the bone donor area. re-injury; the third type is allogeneic bone and artificial prosthesis for bone defect, which can be selected and used according to the size and shape of the defect are...

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Problems solved by technology

[0002] At present, there are several methods for repairing large bone defects. The first one is autologous bone grafting, which has the best effects of osteoconduction, osteoinduction and osteogenesis. It is suitable for the reconstruction of bone defects in the load-bearing area; the second is anastomotic autologous bone grafting, which has a good effect on the long bone defects of the limbs that are difficult to repair with traditional bone grafting, but the amount of bone supply is limited, and it will cause damage to the bone donor area. re-injury; the third type is allogeneic bone and artificial prosthesis for bone defect, which can be selected and used according to the size and shape of the defect area, and has a wide range of sources, but has rejection and slow healing; the fourth type is vascularized homogeneous bone One type of allogeneic bone graft has strong natural structure, shape, and osteoinductive ability, but it is in the experimental stage; the fifth type is bone transport and bone elongation, which has a certain curative effect and has irreplaceable advantages to a certain extent, but the healing It takes a long time; the sixth is tissue engineering bone and artificial bone substitute materials, which have a wide range of materials, but are in the experimental stage

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