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High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices
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Hydrodynamic considerations for spring-driven autoinjector design.

Xiaoxu Zhong1, Jean-Christophe Veilleux2, Galen Huaiqiu Shi2

  • 1School of Mechanical Engineering, Purdue University, West Lafayette, IN 47906, United States.

International Journal of Pharmaceutics
|April 28, 2023
PubMed
Summary

This study enhances spring-driven autoinjector design by analyzing hydrodynamic factors like sloshing and cavitation. Integrated simulation tools predict performance, optimizing delivery of therapeutic proteins for better patient outcomes.

Keywords:
Design optimizationProtein aggregationSloshing and cavitationSpring-driven autoinjectorTherapeutic proteins

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Area of Science:

  • Biomedical Engineering
  • Fluid Dynamics
  • Pharmaceutical Science

Background:

  • Spring-driven autoinjectors are crucial for therapeutic protein delivery.
  • Understanding device-tissue and device-protein interactions is key.
  • Validated simulation tools improve autoinjector performance prediction.

Purpose of the Study:

  • To address critical hydrodynamic considerations in spring-driven autoinjector design.
  • To investigate the impact of sloshing and cavitation on device performance.
  • To present a framework for performance prediction and design optimization.

Main Methods:

  • Analysis of hydrodynamic factors including sloshing and cavitation.
  • Integration of validated simulation tools for performance prediction.
  • Experimental validation of simulation models.

Main Results:

  • Identified key hydrodynamic parameters affecting autoinjector performance.
  • Demonstrated the utility of integrated simulation for design optimization.
  • Quantified the influence of sloshing and cavitation on drug delivery.

Conclusions:

  • Hydrodynamic factors significantly impact spring-driven autoinjector design and performance.
  • Simulation-based frameworks enable optimized autoinjector development.
  • Improved autoinjector design enhances therapeutic protein delivery efficacy and safety.