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Biomaterial Final.pdf

  1. BIOMATERIALS Presented by: Yudit Rathi (61) Abhinav Saxena (64) Harsh Malpani (86) Tanay Shah (68)
  2. Content ▪ Introduction ▪ Objective ▪ Properties ▪ Application ▪ Characteristics ▪ Classes of Biomaterials
  3. 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.
  4. OBJECTIVE ❑To introduce the different biomaterials used in Biomedical Engineering. ❑To provide some fundamental properties of these materials, ❑And indicate how they are used.
  5. Properties
  6. 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.
  7. 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).
  8. Questions?