Systems Based on Laser Technology 6311 Stereolithography Apparatus SLA

The stereolithography apparatus (SLA), as it is commonly known, is often considered the pioneer of the RP industry. The first commercial system was introduced in 1988 by 3D Systems Inc., with the inventor C.W. Hull as one of its founders. Stereolithography is based on the use of a focused beam of an electromagnetic radiation source in 3D System's case, an ultraviolet (UV) laser, which is vector-scanned over the top of a bath of a photopolymerizable liquid polymer material. As polymerization is...

Protein Incorporation Onto Biomimetic Coatings

The biointegration of biomaterials implicates a series of cellular and extracellular matrix events, some of which take place at the tissue-implant interface and which, in part, reflect the host response to the bulk and surface characteristics of the implanted material.114 Furthermore, due to the corn- plexities of in vivo environment, the science of the bone-implant interface is still not fully understood, in particular the role played by different biomolecules, and their influence on initial...

Composites In The Biomedical Field

Polymer matrix composites are being increasingly studied22-24 for different biomedical applications ranging from coatings to load-bearing implants. Examples of nondegradable polymers proposed as matrices in biocomposites include polymethyl methacrylate (PMMA), polysulfone (PSU), poly-etheretherketone (PEEK), and epoxy. The research concerning biodegradable composites has been mostly centered on the use of polylactic acid (PLA) and polyglycolic acid (PGA) and its copolymers, the first...

Types Of Injectables

Thermoplastic pastes TP are polymeric systems with a low melting temperature usually lower than 65 C . These pastes are usually based in poly e-caprolactone PCL ,3 poly lactides ,4 and poly ethylene glycol PEG , alone or as copolymers or blends.5 After melting, they are readily injected into the body, where they solidify in a few seconds after cooling to body temperature. These systems, due to their usually low molecular weight, are suitable for injectability even when heated slightly above...