Patent ID: 6676708
Filing Date: 2004-01-13
Classification: A61F

Abstract:
A dynamic prosthetic foot having a split upper ankle and a heel with differentiated elasticity, comprising:a sole; an ankle part that separates from said sole along a transverse parting line; said ankle part including a gradual upward bend, a horizontal part, and a vertically extending part; a vertically extending slot formed in said vertically extending part; said vertically extending slot formed mid-breadth of said vertically extending part to divide said vertically extending part into two equal size parts, said two equal size parts forming a lateral pylon support and a medial pylon support, respectively; a heel part that separates from said ankle part along said transverse parting line; said heel part including a central support, a central extension, a lateral heel extension, and a medical heel extension; said central support having a leading end disposed in underlying, supporting relation to said horizontal part of said ankle part and a downwardly turned return bend formed in a trailing end thereof; said central extension having a leading end secured to a trailing free end of said central support and a trailing end having a gradual upward bend formed therein; said lateral heel extension and said medial heel extension being integral and generally coplanar with said sole and being disposed on opposite sides of said central support and said s aid central extension; whereby said central support, central extension, and medial extension of said heel part provide differentiated responses to impact forces created by ambulation.