Design of a new somatosensory stimulus delivery system to assess hand functions
Neurological injury such as stroke typically results in impaired motion and sensation in upper limbs. However, sensory rehabilitation for the hand is often neglected. Main causes cited are lack of time and lack of resources to appropriate quantified assessments. In this project, a prototype was d...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/159035 |
| _version_ | 1811694709469347840 |
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| author | Tan, Cher Yang |
| author2 | Ang Wei Tech |
| author_facet | Ang Wei Tech Tan, Cher Yang |
| author_sort | Tan, Cher Yang |
| collection | NTU |
| description | Neurological injury such as stroke typically results in impaired motion and sensation in upper limbs.
However, sensory rehabilitation for the hand is often neglected. Main causes cited are lack of time and
lack of resources to appropriate quantified assessments.
In this project, a prototype was designed to provide two different kinds of stimuli to the thumb, index and
middle finger of the right hand. These stimuli were rotation about the metacarpal joint, and thermotactile
stimulus at the distal phalanx of the fingers. These stimuli were provided using a remote centre of motion
mechanism and Peltier modules.
The accuracy of the prototype in rotating the fingers about the metacarpal joint was assessed using a
potentiometer jig for the thumb and an accelerometer for the index and middle finger. The accuracy of the
prototype in providing thermotactile stimuli was verified using a precise infrared thermometer.
When referenced against these external measuring devices, the level of stimuli reported by the prototype
against the measurement of these external devices were consistent with one another, showcasing the
accuracy of the prototype in providing accurate levels of stimuli. Preparation time was tested with a group
of healthy adults and proven to be short with an average time of 2 minutes .
In conclusion, the prototype was evaluated to be able to provide accurate level of stimuli for two of the
three stimuli that was to be provided. Several limitations were identified. Firstly, materials used for the
construction of the prototype were not strong and thus the prototype could bend and flex. Next, large
amounts of electronics not connected using a printed circuit board caused the prototype to be bulky. The
temperature range of the thermo tactile stimuli and the speed at which it reached its setpoint could be
increased. |
| first_indexed | 2024-10-01T07:11:53Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/159035 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:11:53Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1590352023-03-04T20:20:18Z Design of a new somatosensory stimulus delivery system to assess hand functions Tan, Cher Yang Ang Wei Tech School of Mechanical and Aerospace Engineering WTAng@ntu.edu.sg Engineering::Mechanical engineering::Mechatronics Neurological injury such as stroke typically results in impaired motion and sensation in upper limbs. However, sensory rehabilitation for the hand is often neglected. Main causes cited are lack of time and lack of resources to appropriate quantified assessments. In this project, a prototype was designed to provide two different kinds of stimuli to the thumb, index and middle finger of the right hand. These stimuli were rotation about the metacarpal joint, and thermotactile stimulus at the distal phalanx of the fingers. These stimuli were provided using a remote centre of motion mechanism and Peltier modules. The accuracy of the prototype in rotating the fingers about the metacarpal joint was assessed using a potentiometer jig for the thumb and an accelerometer for the index and middle finger. The accuracy of the prototype in providing thermotactile stimuli was verified using a precise infrared thermometer. When referenced against these external measuring devices, the level of stimuli reported by the prototype against the measurement of these external devices were consistent with one another, showcasing the accuracy of the prototype in providing accurate levels of stimuli. Preparation time was tested with a group of healthy adults and proven to be short with an average time of 2 minutes . In conclusion, the prototype was evaluated to be able to provide accurate level of stimuli for two of the three stimuli that was to be provided. Several limitations were identified. Firstly, materials used for the construction of the prototype were not strong and thus the prototype could bend and flex. Next, large amounts of electronics not connected using a printed circuit board caused the prototype to be bulky. The temperature range of the thermo tactile stimuli and the speed at which it reached its setpoint could be increased. Bachelor of Engineering (Mechanical Engineering) 2022-06-09T02:23:30Z 2022-06-09T02:23:30Z 2022 Final Year Project (FYP) Tan, C. Y. (2022). Design of a new somatosensory stimulus delivery system to assess hand functions. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/159035 https://hdl.handle.net/10356/159035 en A003 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Mechanical engineering::Mechatronics Tan, Cher Yang Design of a new somatosensory stimulus delivery system to assess hand functions |
| title | Design of a new somatosensory stimulus delivery system to assess hand functions |
| title_full | Design of a new somatosensory stimulus delivery system to assess hand functions |
| title_fullStr | Design of a new somatosensory stimulus delivery system to assess hand functions |
| title_full_unstemmed | Design of a new somatosensory stimulus delivery system to assess hand functions |
| title_short | Design of a new somatosensory stimulus delivery system to assess hand functions |
| title_sort | design of a new somatosensory stimulus delivery system to assess hand functions |
| topic | Engineering::Mechanical engineering::Mechatronics |
| url | https://hdl.handle.net/10356/159035 |
| work_keys_str_mv | AT tancheryang designofanewsomatosensorystimulusdeliverysystemtoassesshandfunctions |