Personalized carbon/carbon composite artificial bone and preparation method thereof

Abstract

The invention relates to a personalized carbon / carbon composite artificial bone and a preparation method of the personalized carbon / carbon composite artificial bone, wherein specific steps are as follows: a. choosing carbon-fiber reinforced carbon matrix as a raw material; b. performing an artificial bone outline by collection of computerized tomography (CT) images, converting the collected artificial bone outline into a non-uniform rational B-spline surface, processing the carbon / carbon composite to form the carbon / carbon composite artificial bone; c. filling argon into a vacuum glow discharge chamber to perform plasma pretreatment on the surface of the carbon-fiber reinforced carbon matrix, placing the processed carbon-fiber reinforced carbon matrix into alcohol solution to perform ultrasonic washing; d. spraying a hydroxyapatite coating onto the surface of the washed carbon-fiber reinforced carbon matrix to form the carbon / carbon composite. According to the personalized carbon / carbon composite artificial bone and preparation method of the personalized carbon / carbon composite artificial bone provided by the invention, the hydroxyapatite coating is sprayed onto the surface of the carbon / carbon composite, the surface activity of the carbon / carbon composite is improved and the release of carbon granules can be decreased effectively.

Description

technical field [0001] The invention relates to the medical field, in particular to a personalized carbon-carbon composite material artificial bone and a preparation method thereof. Background technique [0002] As an effective treatment method, artificial bone replacement surgery has been widely carried out at home and abroad. Although the general appearance of human bones is the same, there are large differences in bone structure. The femoral neck-shaft angle can vary from 110° to 140°, with an average of 125°. A uniform prosthesis cannot be applied to all patients. Ordinary prosthetic stems cannot fit everyone's medullary cavity, so there is a gap between the prosthesis and the bone, and there will be slight shaking when the force is applied again. Bowman SM et al. found that the fretting will be Fatigue damage to trabecular bone. The tight combination of the prosthesis and the bone makes the force of the prosthesis evenly transmitted to the bone, reducing the bone atro...

AI Technical Summary

Problems solved by technology

However, compared with metal implants, the preparation of individualized carbon / carbon composite artificial bones has a long manufacturing cycle and high cost, which restricts the development of carbon / carbon composite artificial bones.

Metal restorations generally obtain two-dimensional and three-dimensional information through CT scanning, generate molds or models after modeling, and then obtain individualized artificial bones through casting. Deposition of carbon, thus metal implant manufacturing methods are not suitable for the preparation of carbon / carbon composite artificial bone

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