Crossed four-bar mechanism for improved prosthetic grasp
Passive linkages were developed to improve grasp functionality and minimize a prosthetic terminal device's number of user-controlled inputs. The linkages act to stabilize grasped objects and substitute for the palp of normal anatomical fingers. The Southampton Hand Assessment Procedure was used...
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| Veröffentlicht in: | Journal of rehabilitation research and development 2009-01, Vol.46 (8), p.1011-1020 |
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| container_title | Journal of rehabilitation research and development |
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| creator | Ramirez, Issa A Lusk, Craig P Dubey, Rajiv Highsmith, M Jason Maitland, Murray E |
| description | Passive linkages were developed to improve grasp functionality and minimize a prosthetic terminal device's number of user-controlled inputs. The linkages act to stabilize grasped objects and substitute for the palp of normal anatomical fingers. The Southampton Hand Assessment Procedure was used to compare the normal anatomical hand, this prototype, and a commercially available (Hosmer) hook. In testing, prosthetic terminal devices took three times as long as the normal anatomical hand to perform tasks. Nevertheless, heavyweight power and spherical grasps were improved with the use of the new mechanism compared with the commercial hook. Conversely, precision grasps were worsened because of the lack of a high-friction surface on the distal end of the prototype. |
| doi_str_mv | 10.1682/jrrd.2009.01.0004 |
| format | Article |
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The linkages act to stabilize grasped objects and substitute for the palp of normal anatomical fingers. The Southampton Hand Assessment Procedure was used to compare the normal anatomical hand, this prototype, and a commercially available (Hosmer) hook. In testing, prosthetic terminal devices took three times as long as the normal anatomical hand to perform tasks. Nevertheless, heavyweight power and spherical grasps were improved with the use of the new mechanism compared with the commercial hook. 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| ispartof | Journal of rehabilitation research and development, 2009-01, Vol.46 (8), p.1011-1020 |
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| language | eng |
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| source | U.S. Government Documents; MEDLINE; EZB-FREE-00999 freely available EZB journals |
| subjects | Activities of Daily Living Artificial arms Artificial Limbs Colleges & universities Design and construction Hand Hands Health aspects Humans Motor Skills Product development Prosthesis Design Rehabilitation technology Studies Task Performance and Analysis Veterans |
| title | Crossed four-bar mechanism for improved prosthetic grasp |
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