SLM von Polylactiden zur Herstellung von resorbierbaren Implantaten

Abstract

Rapid Manufacturing of individual implants using SLM was realized for standard materials in medical technology (Titaniumalloys, cobalt-chromium-alloys, steel). Theses are permanent implants which will stay in the body or will be removed in a second surgery. At Fraunhofer ILT an acetabulum cup was manufactured out of TiAl6V4 using SLM. The cup was successfully implanted in the patient. The regenerative therapy is the clinically preferred strategy. The self-regeneration process of the human body is used to heal bone defects. A new approach follows this strategy. The SLM technology is developed to process bioabsorbable materials. Using additive manufacturing individual implants can be manufactured which will dissolve in the body and will be replaced by human bone. This work describes the development of the process technology to manufacture implants with defined porosity out of a composite material polylactide and β-tricalciumphosphate (PLLA/β-TCP).