BIOMATERIALS
Presented by:
Yudit Rathi (61)
Abhinav Saxena (64)
Harsh Malpani (86)
Tanay Shah (68)

Content
▪ Introduction
▪ Objective
▪ Properties
▪ Application
▪ Characteristics
▪ Classes of Biomaterials

What is a Biomaterial ?
• A biomaterial is a nonviable material used in a
medical device, intended to interact with
biological systems.
[OR]
• Any material of natural or of synthetic origin that
comes in contact with tissue, blood, and
intended for use in diagnostic, therapeutic, or
storage application without adversely affecting
the living organism and its components.

OBJECTIVE
❑To introduce the different biomaterials used in
Biomedical Engineering.
❑To provide some fundamental properties of
these materials,
❑And indicate how they are used.

Properties

APPLICATIONS
❑ Joint Replacements- Titanium, stainless steel
❑ Plate for fracture fixation- Cobalt-chromium alloy
❑ Artifical ligaments and tendons-Teflon, Dacron.
❑ Dental implants for tooth fixation- Titanium
❑ Heart Valves- Stainless steel, carbon and natural
valves
❑ Artificial Heart- Polyurethane
❑Artificial Kidney-Cellulose, polyacrylonitrile
❑Contact lens-Silicone-acrylate, hydrogel.

Characteristics
Elastic modulus : Physically, it represents the stiffness of
a material within the elastic range when tensile or
compressive loads are applied.
Hardness :Hardness is defined as the force per unit area
of indentation or penetration.
Fracture toughness :Fracture toughness is required to
alter the crack propagation in ceramics. It is helpful to
evaluate the serviceability, performance and long term
clinical success of biomaterials.
Fatigue :Fatigue is defined as failure of a material
due to repeated/cyclic loading or unloading (tensile
or compressive stresses).

Questions?