Next Article in Journal
Recent Progress on BaTiO3-Based Piezoelectric Ceramics for Actuator Applications
Next Article in Special Issue
Generalization of Series Elastic Actuator Configurations and Dynamic Behavior Comparison
Previous Article in Journal / Special Issue
A Novel Mechanically Overdamped Actuator with Adjustable Stiffness (MOD-AwAS) for Safe Interaction and Accurate Positioning
Article Menu

Export Article

Open AccessReview
Actuators 2017, 6(3), 23; https://doi.org/10.3390/act6030023

Flexible Medical Devices: Review of Controllable Stiffness Solutions

1
TIPs Department, CP165/67, Université Libre de Bruxelles, 50 Av. Franklin Roosevelt, 1050 Brussels, Belgium
2
BEAMS Department, CP 165/56, Université Libre de Bruxelles, 50 Av. Franklin Roosevelt, 1050 Brussels, Belgium
*
Author to whom correspondence should be addressed.
Received: 22 May 2017 / Revised: 27 June 2017 / Accepted: 30 June 2017 / Published: 11 July 2017
(This article belongs to the Special Issue Variable Stiffness and Variable Impedance Actuators)
View Full-Text   |   Download PDF [1543 KB, uploaded 11 July 2017]   |  

Abstract

In the medical field and in soft robotics, flexible devices are required for safe human interaction, while rigid structures are required to withstand the force application and accuracy in motion. This paper aims at presenting controllable stiffness mechanisms described in the literature for applications with or without shape-locking performances. A classification of the solutions based on their working principle is proposed. The intrinsic properties of these adaptive structures can be modified to change their mechanical characteristics from a geometrical point of view or equivalent elastic properties (with internal mechanisms or with a change in material properties). These solutions are compared quantitatively, based on selected criteria linked to the medical field as the stiffness range, the activation time and the working conditions. Depending on the application and its requirements, the most suitable solution can be selected following the quantitative comparisons. Several applications of these tunable stiffness structures are proposed and illustrated by examples of the literature. View Full-Text
Keywords: controllable stiffness; flexural stiffness; shape-locking; flexible medical devices controllable stiffness; flexural stiffness; shape-locking; flexible medical devices
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Blanc, L.; Delchambre, A.; Lambert, P. Flexible Medical Devices: Review of Controllable Stiffness Solutions. Actuators 2017, 6, 23.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Actuators EISSN 2076-0825 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top