Reinforced Dielectric Elastomer Actuators for post-Paralysis Facial Reanimation

WSS Funding

Context

Facial paralysis is a highly burdening condition, resulting in a patient’s inability to move his musculature on one or both sides of his face. This condition compromises the patient’s communication and facial expressions, and thus dramatically reduces his quality of life. The current treatment for chronic facial paralysis relies on a complex reconstructive surgery.

Chosen approach

Our team is working on a novel, less invasive approach for dynamic facial reanimation. The use of a smart material, namely DEA’s is proposed for facial motion restoration, thus avoiding the traditional two-stage free muscle transfer procedure and allowing for a faster recovery of the patient.

Current state of the research

A study of the facial muscles and neural interfaces is performed, in order to implement a realistic setup. A non-invasive neural interface based on myoelectric signal is used in order to establish a real-time control of the actuator, showing that the use of DEA’s combined with a neural interface presents a promising approach for treatment of facial paralysis. 

In order to guide the movement of the DEA and favor large deformations, we are also working on fibre reinforcement of the soft actuators. 

 

Publications

Inversing the actuation cycle of dielectric elastomer actuators for a facial prosthesis

S. M. A. Konstantinidi; Q. P. M. De Menech; T. G. Martinez; P. Germano; A. Boegli et al. 

2024-05-09. SPIE Smart Structures + Nondestructive Evaluation 2024, Long Beach, California, USA, March 24-28, 2024. DOI : 10.1117/12.3010529.

Highly anisotropic carbon fiber electrodes for DEAs and their dynamic non-monotonic conductive properties

M. Koenigsdorff; J. Mersch; S. M. A. Konstantinidi; Y. Perriard; G. Gerlach 

2024-05-09. SPIE Smart Structures + Nondestructive Evaluation 2024, Long Beach, California, USA, March 24-28, 2024. DOI : 10.1117/12.3010366.

An artificial urinary sphincter based on dielectric elastomer technology

Q. P. M. De Menech; S. Zammouri; S. M. A. Konstantinidi; A. Benouhiba; Y. R. C. Civet et al. 

2024-05-09. SPIE Smart Structures + Nondestructive Evaluation 2024, Long Beach, California, USA, March 24-28, 2024. DOI : 10.1117/12.3004813.

Frequency response of fiber reinforced DEAs

S. M. A. Konstantinidi; M. Koenigsdorff; T. G. Martinez; Y. R. C. Civet; G. Gerlach et al. 

2024-05-09. SPIE Smart Structures + Nondestructive Evaluation 2024, Long Beach, California, USA, March 24-28, 2024. DOI : 10.1117/12.3010528.

Carbon based printed electrodes for DEAs: study of pad, inkjet, and stencil printing

S. Holzer; A. M. Walter; S. M. A. Konstantinidi; T. G. Martinez; Y. R. C. Civet et al. 

2024-05-09. SPIE Smart Structures + Nondestructive Evaluation 2024, Long Beach, California, USA, March 24-28, 2024. DOI : 10.1117/12.3010530.

Uni-axial reinforced dielectric elastomer actuators with embedded 3D printed fibers

S. M. A. Konstantinidi; T. G. Martinez; B. Tandon; Y. R. C. Civet; Y. Perriard 

Smart Materials And Structures. 2023-12-01. Vol. 32, num. 12, p. 125011. DOI : 10.1088/1361-665X/ad0447.

Mechanical Characterisation of Porcine Urethra: Non Linear Constitutive Models and Experimental Approach

Q. De Menech; S. Konstantinidi; T. Martinez; A. Benouhiba; Y. Civet et al. 

2023-10-31. Seventh International Conference on Advances in Biomedical Engineering (ICABME 2023), Beirut, Libanon (hybrid), October 12-13, 2023. p. 35-40. DOI : 10.1109/ICABME59496.2023.10293025.

Real-time actuation of a dielectric elastomer actuator neuroprosthesis for facial paralysis

S. M. A. Konstantinidi; C. Imholz; T. G. Martinez; A. Benouhiba; A. M. Walter et al. 

Smart Materials in Medicine. 2023-06-21. Vol. 5, num. (2024), p. 15-23. DOI : 10.1016/j.smaim.2023.06.003.

Inkjet printed dielectric elastomer actuators for facial reconstruction

S. Soussou 

2023-06-09.

Modelisation of fiber reinforced DEAs

A. Sansonnens 

2023-06-09.