Femoral head support frame and manufacturing method thereof

A manufacturing method and support frame technology, which is applied in the field of human implants, can solve the problems of high cost, physical processing of support frames, lack of uniformity of product pores, etc., and achieve the effect of high porosity, large pore diameter, and high strength

Inactive Publication Date: 2011-09-14
北京畅想天行医疗技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing machining methods are difficult to process the solid body of the scaffold into a porous structure similar to the structure of bone tissue
There is a patent ZL200810111686.6 which discloses a method of processing metal powder by electron beam remelting, which is a great progress in processing the porous structure of the support frame entity, but its cost is high, and the pores of the obtained product lack uniformity

Method used

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  • Femoral head support frame and manufacturing method thereof
  • Femoral head support frame and manufacturing method thereof
  • Femoral head support frame and manufacturing method thereof

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with drawings and embodiments.

[0017] like figure 1 As shown, the overall shape of the femoral head support frame of the present invention is cylindrical, and is divided into a body part 4 and a tail part 1 . The body part 4 is composed of a stem 3 located on the central axis and a hemispherical cylindrical shell 2 on the outer periphery of the stem 3; the tail part 1 of the support frame is a cylinder provided with external threads. The core column 3 of the support frame body and the support frame tail 1 are made of solid metal, and the hemispherical cylindrical shell 2 of the support frame body 4 is made of porous metal.

[0018] Figure 2A and Figure 2B Shown is an embodiment of the fabrication and assembly of the composite structure femoral head support frame of the present invention:

[0019] Using solid metal materials, using mechanical processing methods such as Figure 2A The stem 3 of ...

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Abstract

The invention relates to a femoral head support frame and a manufacturing method thereof. The femoral head support frame is characterized in that the whole femoral head support frame is cylindrical; the front end of a body part is hemispherical; a tail part is a cylinder provided with an external thread; core columns of the body part and the tail part of the support frame are manufactured by mechanically processing solid metals; a hemispherical cylindrical shell on the outer layer of the body part of the support frame is formed by porous metals manufactured by powder metallurgy technology; and the porous metals are metal materials with pore diameter being 20-800mu m and porosity being 20-70%. The femoral head support frame has large pore diameter, high porosity and high strength and avoids stress shielding caused by high elastic modulus after being implanted in the human body, and the porous metal structure is beneficial to adhesion and ingrowth of the bone tissues toward the support frame.

Description

technical field [0001] The invention relates to a human body implant, in particular to a support frame implanted in a femoral head for treating necrosis of the femoral head. The invention also relates to a process for manufacturing the femoral head support frame. Background technique [0002] The common treatment method for necrosis of the femoral head is core decompression. In order to prevent the bone defect left after core decompression and the weakness of the femoral neck from accelerating the collapse of the femoral head, people use internal supports to provide support. There are various designs. The femoral head support frame is mostly manufactured by machining. In order for the scaffold to combine well with the bone tissue, the scaffold should have a rough outer surface and a porous internal structure. The existing machining methods are difficult to process the solid body of the scaffold into a porous structure similar to the structure of bone tissue. Patent ZL2008...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56
Inventor 沈龙吴春生邱芹尹晓宇包娟娟
Owner 北京畅想天行医疗技术有限公司
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