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Actuators for Implantable Devices: A Broad View.

¹Department of Electrical and Computer Engineering, Ohio State University, Columbus, OH 43210, USA.

|October 27, 2022

Summary

This summary is machine-generated.

Selecting the right biocompatible actuator is crucial for implantable biomedical devices. This review surveys novel actuator technologies, their pros and cons, and offers guidance for applications like drug delivery and cardiovascular implants.

Keywords:

biomedical catheter drug-delivery capsule implantable robots micro-swimmer stent

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Area of Science:

Biomedical Engineering
Robotics
Materials Science

Background:

Implantable biomedical devices rely on actuators for motion, alongside sensors and power.
Actuator selection is complex due to diverse mechanisms, varying performance (strain, frequency, power, durability), and evolving technologies.
Existing reviews often focus on single actuator types, hindering a comprehensive understanding.

Purpose of the Study:

To provide a broad overview of recent advances in in vivo actuator technologies for biomedical implants.
To analyze the technical advantages and limitations of various actuator types.
To offer application-specific recommendations for actuator selection in areas like drug delivery, cardiovascular, and endoscopy.

Main Methods:

Comprehensive literature review of novel actuator technologies for biomedical applications.
Comparative analysis of actuator performance metrics, including strain/stress output, frequency response, power consumption, and durability.
Categorization of actuators based on their actuating mechanisms (e.g., electric, photonic, electrothermal).

Main Results:

Showcased recent advancements in diverse in vivo actuator technologies.
Detailed the technical merits and drawbacks of each actuator category.
Provided use-case specific guidance for selecting actuators for drug delivery, cardiovascular, and endoscopic implants.

Conclusions:

A comprehensive understanding of actuator technologies is essential for designing effective implantable biomedical devices.
The study facilitates informed actuator selection by outlining trade-offs and providing application-specific recommendations.
This work supports the development of next-generation active biomedical implants.