A Prosthetic Socket with Active Volume Compensation for Amputated Lower Limb
Typically, the actual volume of the residual limb changes over time. This causes the prosthesis to not fit, and then pain and skin disease. In this study, a prosthetic socket was developed to compensate for the volume change of the residual limb. Using an inflatable air bladder, the proposed socket...
| Những tác giả chính: | , , , , , , |
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| Định dạng: | Bài viết |
| Ngôn ngữ: | English |
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MDPI AG
2021-01-01
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| Loạt: | Sensors |
| Những chủ đề: | |
| Truy cập trực tuyến: | https://www.mdpi.com/1424-8220/21/2/407 |
| _version_ | 1827602963509542912 |
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| author | Ji-Hyeon Seo Hyuk-Jin Lee Dong-Wook Seo Dong-Kyu Lee Oh-Won Kwon Moon-Kyu Kwak Kang-Ho Lee |
| author_facet | Ji-Hyeon Seo Hyuk-Jin Lee Dong-Wook Seo Dong-Kyu Lee Oh-Won Kwon Moon-Kyu Kwak Kang-Ho Lee |
| author_sort | Ji-Hyeon Seo |
| collection | DOAJ |
| description | Typically, the actual volume of the residual limb changes over time. This causes the prosthesis to not fit, and then pain and skin disease. In this study, a prosthetic socket was developed to compensate for the volume change of the residual limb. Using an inflatable air bladder, the proposed socket monitors the pressure in the socket and keeps the pressure distribution uniform and constant while walking. The socket has three air bladders on anterior and posterior tibia areas, a latching type 3-way pneumatic valve and a portable control device. In the paper, the mechanical properties of the air bladder were investigated, and the electromagnetic analysis was performed to design the pneumatic valve. The controller is based on a hysteresis control algorithm with a closed loop, which keeps the pressure in the socket close to the initial set point over a long period of time. In experiments, the proposed prosthesis was tested through the gait simulator that can imitate a human’s gait cycle. The active volume compensation of the socket was successfully verified during repetitive gait cycle using the weight loads of 50, 70, and 90 kg and the residual limb model with a variety of volumes. It was confirmed that the pressure of the residual limb recovered to the initial state through the active control. The pressure inside the socket had a steady state error of less than 0.75% even if the volume of the residual limb was changed from −7% to +7%. |
| first_indexed | 2024-03-09T05:30:00Z |
| format | Article |
| id | doaj.art-227a68329b8045f6a0ae82c7ca8a5fdc |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T05:30:00Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-227a68329b8045f6a0ae82c7ca8a5fdc2023-12-03T12:33:18ZengMDPI AGSensors1424-82202021-01-0121240710.3390/s21020407A Prosthetic Socket with Active Volume Compensation for Amputated Lower LimbJi-Hyeon Seo0Hyuk-Jin Lee1Dong-Wook Seo2Dong-Kyu Lee3Oh-Won Kwon4Moon-Kyu Kwak5Kang-Ho Lee6Daegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, KoreaDaegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, KoreaDepartment of Radio Communication Engineering/Interdisciplinary Major of Maritime AI Convergence, Korea Maritime and Ocean University, Busan 49112, KoreaDaegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, KoreaDaegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, KoreaSchool of Mechanical Engineering, College of Engineering, Kyungpook National University, Daegu 41566, KoreaDaegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, KoreaTypically, the actual volume of the residual limb changes over time. This causes the prosthesis to not fit, and then pain and skin disease. In this study, a prosthetic socket was developed to compensate for the volume change of the residual limb. Using an inflatable air bladder, the proposed socket monitors the pressure in the socket and keeps the pressure distribution uniform and constant while walking. The socket has three air bladders on anterior and posterior tibia areas, a latching type 3-way pneumatic valve and a portable control device. In the paper, the mechanical properties of the air bladder were investigated, and the electromagnetic analysis was performed to design the pneumatic valve. The controller is based on a hysteresis control algorithm with a closed loop, which keeps the pressure in the socket close to the initial set point over a long period of time. In experiments, the proposed prosthesis was tested through the gait simulator that can imitate a human’s gait cycle. The active volume compensation of the socket was successfully verified during repetitive gait cycle using the weight loads of 50, 70, and 90 kg and the residual limb model with a variety of volumes. It was confirmed that the pressure of the residual limb recovered to the initial state through the active control. The pressure inside the socket had a steady state error of less than 0.75% even if the volume of the residual limb was changed from −7% to +7%.https://www.mdpi.com/1424-8220/21/2/407lower limb prosthesisprosthetic socketactive controlvolume compensationair bladderair flow |
| spellingShingle | Ji-Hyeon Seo Hyuk-Jin Lee Dong-Wook Seo Dong-Kyu Lee Oh-Won Kwon Moon-Kyu Kwak Kang-Ho Lee A Prosthetic Socket with Active Volume Compensation for Amputated Lower Limb Sensors lower limb prosthesis prosthetic socket active control volume compensation air bladder air flow |
| title | A Prosthetic Socket with Active Volume Compensation for Amputated Lower Limb |
| title_full | A Prosthetic Socket with Active Volume Compensation for Amputated Lower Limb |
| title_fullStr | A Prosthetic Socket with Active Volume Compensation for Amputated Lower Limb |
| title_full_unstemmed | A Prosthetic Socket with Active Volume Compensation for Amputated Lower Limb |
| title_short | A Prosthetic Socket with Active Volume Compensation for Amputated Lower Limb |
| title_sort | prosthetic socket with active volume compensation for amputated lower limb |
| topic | lower limb prosthesis prosthetic socket active control volume compensation air bladder air flow |
| url | https://www.mdpi.com/1424-8220/21/2/407 |
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