Rapid manufacturing in biomedical materials: Using subtractive rapid prototyping for bone replacement

Matthew C Frank; Christopher V Hunt; Donald D Anderson; Todd O McKinley; Thomas D Brown

doi:10.26153/tsw/15079

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Rapid manufacturing in biomedical materials: Using subtractive rapid prototyping for bone replacement

Conference proceeding

Open access

Rapid manufacturing in biomedical materials: Using subtractive rapid prototyping for bone replacement

Matthew C Frank, Christopher V Hunt, Donald D Anderson, Todd O McKinley and Thomas D Brown

2008 International Solid Freeform Fabrication Symposium , pp.686-696

01/01/2008

DOI: 10.26153/tsw/15079

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Abstract

The CNC-RP (Rapid Prototyping) process is shown to be a suitable method for the Subtractive Rapid Prototyping (SRP) of bone implants. It has been illustrated that this process can produce complex shaped bones and bone fragments from a variety of clinically relevant materials. One frequently used biocompatible material, Trabecular Metal (TM), has very limited custom manufacturability due to the ductile nature of its porous structure. The use of traditional machining methods results in significant pore occlusion along the metal's surface. This smearing effect inhibits the infiltration of new blood vessels thus reducing its utility as an implant material option. A a machining method has been developed that addresses this problem, greatly reducing the amount of metal smearing that occurs upon machined surfaces. This method in principle is not limited to TM but could also be applicable to other open cell synthetic and naturally occurring materials. In addition to reducing smearing, the infiltration method serves as a barrier to contamination and clogging of the pores during machining. When a specific biosensitive material is required, the CNC-RP process is very capable; however, if the materials can be processed using additive means (i.e. EBM, 3DP), then the opportunities for increased geometric complexity may exist. However, specialized materials like TM and natural materials such as coral and allograft bone are uniquely well suited for this SRP process.

Beschmiereffekt

Biokompatibilität

Biomedizinwerkstoff

Infiltration

Knochenersatz

Rapid-Manufacturing

Details

Title: Subtitle: Rapid manufacturing in biomedical materials: Using subtractive rapid prototyping for bone replacement
Creators: Matthew C Frank
Christopher V Hunt
Donald D Anderson
Todd O McKinley
Thomas D Brown
Resource Type: Conference proceeding
Publication Details: 2008 International Solid Freeform Fabrication Symposium , pp.686-696
DOI: 10.26153/tsw/15079
Language: English
Date published: 01/01/2008
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation; Industrial and Systems Engineering
Record Identifier: 9984304725202771

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