STIMGRASP: A Home-Based Functional Electrical Stimulator for Grasp Restoration in Daily Activities
Thousands of people currently suffer from motor limitations caused by SCI and strokes, which impose personal and social challenges. These individuals may have a satisfactory recovery by applying functional electrical stimulation that enables the artificial restoration of grasping after a muscular co...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/23/1/10 |
| _version_ | 1797431250549473280 |
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| author | Renato G. Barelli Valter F. Avelino Maria Claudia F. Castro |
| author_facet | Renato G. Barelli Valter F. Avelino Maria Claudia F. Castro |
| author_sort | Renato G. Barelli |
| collection | DOAJ |
| description | Thousands of people currently suffer from motor limitations caused by SCI and strokes, which impose personal and social challenges. These individuals may have a satisfactory recovery by applying functional electrical stimulation that enables the artificial restoration of grasping after a muscular conditioning period. This paper presents the STIMGRASP, a home-based functional electrical stimulator to be used as an assistive technology for users with tetraplegia or hemiplegia. The STIMGRASP is a microcontrolled stimulator with eight multiplexed and independent symmetric biphasic constant current output channels with USB and Bluetooth communication. The system generates pulses with frequency, width, and maximum amplitude set at 20 Hz, 300 µs/phase, and 40 mA (load of 1 k<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mo>Ω</mo></semantics></math></inline-formula>), respectively. It is powered by a rechargeable lithium-ion battery of 3100 mAh, allowing more than 10 h of continuous use. The development of this system focused on portability, usability, and wearability, resulting in portable hardware with user-friendly mobile app control and an orthosis with electrodes, allowing the user to carry out muscle activation sequences for four grasp modes to use for achieving daily activities. |
| first_indexed | 2024-03-09T09:42:12Z |
| format | Article |
| id | doaj.art-ee5b610120984c24a45f7a406f123f4c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T09:42:12Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ee5b610120984c24a45f7a406f123f4c2023-12-02T00:52:31ZengMDPI AGSensors1424-82202022-12-012311010.3390/s23010010STIMGRASP: A Home-Based Functional Electrical Stimulator for Grasp Restoration in Daily ActivitiesRenato G. Barelli0Valter F. Avelino1Maria Claudia F. Castro2Electrical Engineering Department, Centro Universitário FEI, São Bernardo do Campo 09850-901, SP, BrazilElectrical Engineering Department, Centro Universitário FEI, São Bernardo do Campo 09850-901, SP, BrazilElectrical Engineering Department, Centro Universitário FEI, São Bernardo do Campo 09850-901, SP, BrazilThousands of people currently suffer from motor limitations caused by SCI and strokes, which impose personal and social challenges. These individuals may have a satisfactory recovery by applying functional electrical stimulation that enables the artificial restoration of grasping after a muscular conditioning period. This paper presents the STIMGRASP, a home-based functional electrical stimulator to be used as an assistive technology for users with tetraplegia or hemiplegia. The STIMGRASP is a microcontrolled stimulator with eight multiplexed and independent symmetric biphasic constant current output channels with USB and Bluetooth communication. The system generates pulses with frequency, width, and maximum amplitude set at 20 Hz, 300 µs/phase, and 40 mA (load of 1 k<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mo>Ω</mo></semantics></math></inline-formula>), respectively. It is powered by a rechargeable lithium-ion battery of 3100 mAh, allowing more than 10 h of continuous use. The development of this system focused on portability, usability, and wearability, resulting in portable hardware with user-friendly mobile app control and an orthosis with electrodes, allowing the user to carry out muscle activation sequences for four grasp modes to use for achieving daily activities.https://www.mdpi.com/1424-8220/23/1/10functional electrical stimulation (FES)circuit designcircuit applicationgraspingtetraplegiahemiplegia |
| spellingShingle | Renato G. Barelli Valter F. Avelino Maria Claudia F. Castro STIMGRASP: A Home-Based Functional Electrical Stimulator for Grasp Restoration in Daily Activities Sensors functional electrical stimulation (FES) circuit design circuit application grasping tetraplegia hemiplegia |
| title | STIMGRASP: A Home-Based Functional Electrical Stimulator for Grasp Restoration in Daily Activities |
| title_full | STIMGRASP: A Home-Based Functional Electrical Stimulator for Grasp Restoration in Daily Activities |
| title_fullStr | STIMGRASP: A Home-Based Functional Electrical Stimulator for Grasp Restoration in Daily Activities |
| title_full_unstemmed | STIMGRASP: A Home-Based Functional Electrical Stimulator for Grasp Restoration in Daily Activities |
| title_short | STIMGRASP: A Home-Based Functional Electrical Stimulator for Grasp Restoration in Daily Activities |
| title_sort | stimgrasp a home based functional electrical stimulator for grasp restoration in daily activities |
| topic | functional electrical stimulation (FES) circuit design circuit application grasping tetraplegia hemiplegia |
| url | https://www.mdpi.com/1424-8220/23/1/10 |
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