Purdue University Graduate School

Damage And Fracture In Skin: Applications In Needle Insertion





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Damage And Fracture In Skin: Applications In Needle Insertion

posted on 2023-02-08, 15:41 authored by Vivek Dharmangadan SreeVivek Dharmangadan Sree

Subcutaneous injection through devices such as autoinjectors is a preferred delivery method for wide array of pharmaceuticals such as monoclonal antibodies. Needle insertion during drug delivery involves large deformation, damage, and fracture of the skin tissue and affects drug transport and uptake. Yet, our understanding of needle insertion biomechanics is limited, but is crucially important to create autoinjectors that lead to the least amount of pain, penetrate the skin to a desired depth, produce small lesions that minimize back flow of drug, and operate robustly even given the variability in the skin mechanics among individuals. Computational models of needle insertion lends itself as an excellent avenue for studying the biomechanics of injector- skin interactions and for proposing better device designs. This work is focused on introducing a comprehensive computational modeling framework for optimizing needle insertion by autoinjector devices, while addressing limitations in experimental data and constitutive modeling of damage and fracture mechanisms in skin


Degree Type

  • Doctor of Philosophy


  • Mechanical Engineering

Campus location

  • West Lafayette

Advisor/Supervisor/Committee Chair

Adrian Buganza Tepole

Additional Committee Member 2

Pavlos Vlachos

Additional Committee Member 3

Hector Gomez

Additional Committee Member 4

Luis Solorio