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A flexible implantable solution with integrated electromyogram (EMG) and neurostimulation functions for improved control of prosthetic hands is presented. The main board of the implant is composed of two custom designed ICs, a microcontroller, an inductive power supply and a wireless communication interface. The EMG Monitor-ASIC can handle eight differential channels and provides a selectable midband...
This paper presents intramuscular electromyogram (EMG) signals obtained with a fully implantable measurement system that were recorded during goal directed arm movements. In a first implantation thin film electrodes were epimysially implanted on the deltoideus of a rhesus macaque and the encapsulation process was monitored by impedance measurements. Increase of impedance reached a constant level after...
This work presents intramuscular measurements of the electromyogram (EMG) during goal directed arm movements. Thin film electrode arrays were epimysially implanted on the deltoideus of a rhesus macaque and the encapsulation process was monitored by impedance measurements. Increase of impedance plateaued after four weeks indicating a complete incorporation of electrodes. EMG recorded with these electrodes...
The acquisition of myoelectric signals from the Musculus deltoideus of a rhesus monkey is described. Such signals are aimed to be used as control signal for an active myoelectric hand prosthesis. For recording, implantable flexible, polyimide-based multi-site microelectrodes were placed epimysially on the muscle. EMG signals were recorded during voluntary goal-directed movements of the arm, and analyzed...
In the present work we introduce a preliminary study on a new type of dry electrodes to asses their possible use for performing long-term recordings of surface electromyo-graphic signals. These signals would be used for the control of artificial prostheses in a non-invasive manner. In addition, a comparison was carried out between the new dry electrodes and a commercial, pre-gelled electrode. The...
The long-term electrical behavior of 16 different electrode materials was investigated by using continuous impedance spectroscopy over a period of 10 days. The materials included bare and electrolytically treated metals, metals coated with intrinsically conductive polymers, and polymers with conductive particles. Electrolytic treatment of metal electrodes yielded a significant impedance reduction...
The long-term electrical behavior of 16 different electrode materials was investigated by using continuous impedance spectroscopy over a period of 10 days. The materials included bare and electrolytically treated metals, metals coated with intrinsically conductive polymers, and polymers with conductive particles. Electrolytic treatment of metal electrodes yielded a significant impedance reduction...
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