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Needle-free jet injection using real-time controlled linear Lorentz-force actuators.

Andrew Taberner1, N Catherine Hogan, Ian W Hunter

  • 1Auckland Bioengineering Institute and Department of Engineering Science, University of Auckland, 70 Symonds Street, Auckland, New Zealand. a.taberner@auckland.ac.nz

Medical Engineering & Physics
|January 17, 2012
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Summary
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This study introduces a novel controllable jet injection device for needle-free drug delivery. The advanced system precisely regulates drug volume and injection depth, overcoming limitations of previous technologies.

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Area of Science:

  • Biomedical Engineering
  • Drug Delivery Systems
  • Medical Devices

Background:

  • Traditional jet injectors lack control over drug volume and injection depth.
  • Previous needle-free devices often result in uncontrolled drug delivery.
  • Limitations in current jet injection technology hinder precise therapeutic administration.

Purpose of the Study:

  • To develop a controllable jet injection device for precise needle-free drug delivery.
  • To overcome the limitations of uncontrolled force- and pressure-generating injection principles.
  • To enable accurate regulation of drug volume and injection depth.

Main Methods:

  • Development of a custom high-stroke linear Lorentz-force motor.
  • Implementation of feedback control for real-time injection monitoring and modulation.
  • Utilizing the device to inject volumes up to 250μL with controlled depth up to 16mm.

Main Results:

  • Achieved continuous monitoring and modulation of drug jet speed.
  • Demonstrated precise regulation of delivered drug volume.
  • Successfully controlled injection depth and achieved repeatable injections in gels and animal tissue.

Conclusions:

  • The developed controllable jet injection device offers precise and repeatable needle-free drug delivery.
  • This technology addresses critical limitations in current jet injection systems.
  • Potential for improved therapeutic outcomes with controlled depth and volume administration.