engineering applied to human health
Any nonviable (nonliving) biocompatible material used in a medical device, intended to interact with living systems. It can be material (implanted) in the body or a material that contacts body fluids outside the body.
The material evokes the right host response.
What does biocompatibility depend on?
It depends on site of implantation and function of material at the sight.
Give 7 uses of biomaterials.
Prosthetic joints or limbs, artificial organs, sutures, dentistry, catheters, shunts, and contact lenses.
How likely a material deforms elastically (non-permanently) when a force is applied to it.
Compressive yield strength (Mpa)
How much pressure you can put on something before it breaks.
What are the four (actually 5) classes of materials?
Metals, ceramics/glasses, polymers, and composites.
7 facts about metals:
High strength, high resistance to fracture, most highly used, inorganic material, resists corrosion, conducts electricity, ductile.
What are the three groups of metals (alloys)?
Iron-base alloys (stainless steels), cobalt-base alloys, and titanium-base alloys.
7 facts about ceramics and glasses:
Inorganic, inert, biocompatible (particularly with bone), low wear rates (more resistance to degradation), very high melting points, non-directional ionic bonds, and resistant to microbial attack.