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Fiber porous titanium rod for repair of ischemic necrosis of femoral head

An avascular necrosis, porous titanium technology, applied in the field of materials in the field of biomedical engineering technology, can solve the problems of lack of femoral head, inability to prevent the collapse of the femoral head, etc., to promote adhesion, enhance bone bonding, and induce bone formation. Effect

Inactive Publication Date: 2013-05-08
SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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Problems solved by technology

Such as core decompression plus bone grafting, vascular implantation, implantation of bone flap with pedicle or vascular pedicle, and various osteotomies to try to rebuild the blood supply of the femoral head, but none of them can prevent the further collapse of the femoral head. The reason is mainly due to the lack of strong support in the femoral head

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  • Fiber porous titanium rod for repair of ischemic necrosis of femoral head

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Embodiment Construction

[0012] see figure 1 , the fibrous porous titanium rod 1 of the present invention is used for repairing avascular necrosis of the femoral head, comprising a fibrous porous titanium rod body 2 and a nano-strontium apatite layer 3 wrapped on the outer surface of the fibrous porous titanium rod body 2, the fibrous porous titanium rod The rod diameter of the titanium rod body 2 is 1-2 cm, the rod height is 50-80 cm, the pore size distribution is 100-800 μm, the porosity is 80.0±2.0%, and the pores are interconnected. The fibrous porous titanium rod body 2 is made of pure titanium fibers, its compressive strength is 15.0-16.0Mpa, and its modulus of elasticity is 0.90-1.20GPa. The composition and mass percent of the nano-strontium apatite layer 3 are respectively: 66.46% nano-strontium apatite (Sr 10 (PO 4 ) 6 (OH) 2 ), 0.299% sodium chloride and 33.24% distilled water.

[0013] Implanting the fibrous porous titanium rod of the present invention into the femoral head with ischem...

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Abstract

The invention relates to a fiber porous titanium rod for repair of ischemic necrosis of femoral head. The fiber porous titanium rod comprises a fiber porous titanium rod body and a nanometer strontium apatite layer coated on the outer surface of the fiber porous titanium rod body. Diameter of the fiber porous titanium rod body is 1-2cm, height of the rod is 50-80cm, pore diameter distribution is 100-800mum, porosity is 80.0+-2.0%, and pores are communicated with each other. The fiber porous titanium rod is implanted in the femoral head with the ischemic necrosis, can replace a defect area to have strong supporting effect, can promote adhesion, multiplication and differentiation of bone cells on the basis of maintenance of characteristics of an original fiber porous material, effectively induces formation of bones, and enhances osseointegration and bone bonding.

Description

technical field [0001] The invention relates to a material in the technical field of biomedical engineering, in particular to a fibrous porous titanium rod used for repairing avascular necrosis of the femoral head. Background technique [0002] Avascular necrosis of the femoral head (ANFH) is a necrotic lesion of bone cells caused by blood supply disorder of the femoral head caused by various reasons. The cause of avascular necrosis of the femoral head is mainly due to the avascular surface of the femoral head leading to necrosis of the femoral head, and the collapse of the femoral head caused by the force and load of the femoral head. [0003] At present, surgical treatment is generally used clinically. Such as core decompression plus bone grafting, vascular implantation, implantation of bone flap with pedicle or vascular pedicle, and various osteotomies to try to rebuild the blood supply of the femoral head, but none of them can prevent the further collapse of the femoral...

Claims

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Application Information

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IPC IPC(8): A61F2/36A61L27/56A61L27/32A61B17/78A61L31/08A61L31/02
Inventor 郝永强何国戴尅戎
Owner SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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