Improved prosthesis for human forearm

Details Improved prosthesis for human forearm Improved prosthesis for human forearm

A - Human Necessities

61

F

A61F 2/54 (2006.01) A61F 2/58 (2006.01) A61F 2/50 (2006.01) A61F 2/80 (2006.01)

Patent

CA 2226382

A human forearm prosthesis (10) is disclosed which has attached thereto a device (12) comprising a housing (20), a knife blade (14) suitable for cutting food, means on the knife blade for restraining the travel of the knife blade into said housing when it is desired to retract said knife blade into said housing for storage thereof, and out of said housing when it is desired to extend the knife blade for use of the knife blade for cutting food. Preferably, the knife blade moves into and out of the housing by force of gravity. A first means for restraining the travel of the knife blade comprises a guide means (24, 26) which extends substantially the length of said housing, and a projection (30) located on or near the back end of the knife blade, which projection travels in said guide means. The device of the invention has a second means for restraining the travel of said knife blade which comprises a spring operated knife blade release mechanism (40) that blocks the knife blade from passing out of the housing when it is desired to restrain the blade in retracted position.

L'invention concerne une prothèse (10) d'avant-bras humain à laquelle est fixé un dispositif (12) comprenant un logement (20), une lame de couteau (14) permettant de couper un aliment, des moyens sur le couteau pour restreindre la course de la lame de couteau dans ledit logement quand on souhaite rétracter la lame de couteau dans le logement en position de rangement et hors du logement quand l'utilisateur souhaite déployer la lame pour couper un aliment. De préférence, la lame du couteau rentre et sort du logement par l'effet de gravité. Un premier moyen pour limiter la course de la lame comprend un moyen de guidage (24, 26) qui s'étend sensiblement suivant la longueur du logement et une partie saillante (30) se trouvant sur ou près de l'extrémité arrière de la lame de couteau, cette partie saillante se déplaçant dans le moyen de guidage. Le dispositif de l'invention présente un second moyen pour limiter la course de la lame du couteau qui comprend un mécanisme (40) de libération de la lame actionné par un ressort, lequel bloque la lame du couteau et l'empêche de sortir du logement quand on souhaite la garder dans sa position rétractée.

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