Medical Technology - Bionics: Materials Properties Flashcards
What are the properties of titanium? (3)
Non-corrosive, non-reactive, biocompatible.
What are the properties of polypropylene? (1)
Prevents loss of electrical signal during transmission, biocompatible.
What are the properties of silicone? (7)
Ensures the signal is controlled and focused, high elongation properties, high mechanical strength when combined with silica, high permeability to oxygen, biocompatible, strong and flexible as natural joints, similar density to natural tissue.
What are the properties of polyurethane rubber> (4)
Ensures the signal is controlled and focused, biocompatible.
What are the properties of platinum-10% iridium alloy? (4)
Non-corrosive, non-reactive, reasonable mechanical strength, biocompatible.
What are the properties of UHMWPE? (7)
High durability, high creep resistance, high hardness, high tensile strength, low coefficient of friction, similar density to living tissue, biocompatible.
What are the properties of polyethylene? (5)
Similar density to living tissue, relative elasticty, low coefficient of friction, low creep properties, biocomptible.
What are the properties of pyrolytic carbon? (5)
Biocompatible, greater elasticity than graphite, compressive strength greater than graphite, not prone to lipid absorption, not prone to swelling.
What are the properties of Teflon? (6)
Resilient, easy to fabricate, high density, low coefficient of friction, can be dry sterilized, biocompatible.
What is alternative material to graphite?
Pyrolytic Carbon.
What are the properties of superalloys? (6)
High strength, low weight, biocompatible, inertness, corrosion resistant, wear resistant.
What metals are often included in a superalloy? (5)
Nickel (N), Chromium (Cr), Iron (Fe), Molybdenum (Mo), Titanium (Ti).
