Limits...
A Novel Percutaneous Electrode Implant for Improving Robustness in Advanced Myoelectric Control.

Hahne JM, Farina D, Jiang N, Liebetanz D - Front Neurosci (2016)

Bottom Line: Moreover, being percutaneous, it does not require power and data telemetry modules.The implants showed significantly lower impedance and greater robustness against mechanical interference than traditional surface EMG electrodes used for myoelectric control.Moreover, the EMG signals detected by the proposed systems allowed more stable control performance across sessions in different days than that achieved with classic EMG electrodes.

View Article: PubMed Central - PubMed

Affiliation: Institute of Neurorehabilitation Systems, University Medical Center Göttingen Göttingen, Germany.

ABSTRACT
Despite several decades of research, electrically powered hand and arm prostheses are still controlled with very simple algorithms that process the surface electromyogram (EMG) of remnant muscles to achieve control of one prosthetic function at a time. More advanced machine learning methods have shown promising results under laboratory conditions. However, limited robustness has largely prevented the transfer of these laboratory advances to clinical applications. In this paper, we introduce a novel percutaneous EMG electrode to be implanted chronically with the aim of improving the reliability of EMG detection in myoelectric control. The proposed electrode requires a minimally invasive procedure for its implantation, similar to a cosmetic micro-dermal implant. Moreover, being percutaneous, it does not require power and data telemetry modules. Four of these electrodes were chronically implanted in the forearm of an able-bodied human volunteer for testing their characteristics. The implants showed significantly lower impedance and greater robustness against mechanical interference than traditional surface EMG electrodes used for myoelectric control. Moreover, the EMG signals detected by the proposed systems allowed more stable control performance across sessions in different days than that achieved with classic EMG electrodes. In conclusion, the proposed implants may be a promising interface for clinically available prostheses.

No MeSH data available.


Related in: MedlinePlus

Design and application of the implant. (A) Schematic cross-section through the implantation site. (B) 3D-sketch of the implant. (C) Photo of an actual implant.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4814550&req=5

Figure 1: Design and application of the implant. (A) Schematic cross-section through the implantation site. (B) 3D-sketch of the implant. (C) Photo of an actual implant.

Mentions: The one piece, passive electrode is fabricated from medical titanium, whose antimicrobial properties provide a good protection against infections. It consists of a subcutaneous disc for signal pickup, a thin linking axis for minimal skin penetration with length according to the thickness of the skin, and an epicutaneous part for external connection and sealing of the penetration (Figure 1).


A Novel Percutaneous Electrode Implant for Improving Robustness in Advanced Myoelectric Control.

Hahne JM, Farina D, Jiang N, Liebetanz D - Front Neurosci (2016)

Design and application of the implant. (A) Schematic cross-section through the implantation site. (B) 3D-sketch of the implant. (C) Photo of an actual implant.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4814550&req=5

Figure 1: Design and application of the implant. (A) Schematic cross-section through the implantation site. (B) 3D-sketch of the implant. (C) Photo of an actual implant.
Mentions: The one piece, passive electrode is fabricated from medical titanium, whose antimicrobial properties provide a good protection against infections. It consists of a subcutaneous disc for signal pickup, a thin linking axis for minimal skin penetration with length according to the thickness of the skin, and an epicutaneous part for external connection and sealing of the penetration (Figure 1).

Bottom Line: Moreover, being percutaneous, it does not require power and data telemetry modules.The implants showed significantly lower impedance and greater robustness against mechanical interference than traditional surface EMG electrodes used for myoelectric control.Moreover, the EMG signals detected by the proposed systems allowed more stable control performance across sessions in different days than that achieved with classic EMG electrodes.

View Article: PubMed Central - PubMed

Affiliation: Institute of Neurorehabilitation Systems, University Medical Center Göttingen Göttingen, Germany.

ABSTRACT
Despite several decades of research, electrically powered hand and arm prostheses are still controlled with very simple algorithms that process the surface electromyogram (EMG) of remnant muscles to achieve control of one prosthetic function at a time. More advanced machine learning methods have shown promising results under laboratory conditions. However, limited robustness has largely prevented the transfer of these laboratory advances to clinical applications. In this paper, we introduce a novel percutaneous EMG electrode to be implanted chronically with the aim of improving the reliability of EMG detection in myoelectric control. The proposed electrode requires a minimally invasive procedure for its implantation, similar to a cosmetic micro-dermal implant. Moreover, being percutaneous, it does not require power and data telemetry modules. Four of these electrodes were chronically implanted in the forearm of an able-bodied human volunteer for testing their characteristics. The implants showed significantly lower impedance and greater robustness against mechanical interference than traditional surface EMG electrodes used for myoelectric control. Moreover, the EMG signals detected by the proposed systems allowed more stable control performance across sessions in different days than that achieved with classic EMG electrodes. In conclusion, the proposed implants may be a promising interface for clinically available prostheses.

No MeSH data available.


Related in: MedlinePlus