Prosthetic foot having Z shaped insert
AssigneeOtto Bock Orthopaedische Industrie Besitz- und Verwaltungs-Kommanditgesel lschaft
InventorMax Naeder
Life of this patent
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Abstract
A jointless prosthetic foot having a resilient foot insert, which is provided inside the prosthesis body, absorbs and transmits the prosthetic stresses, and which has a top horizontal section, forming the top edge of the prosthetic foot and offering a connection possibility with the prosthesis, and a bottom section which is of extended construction compared to the top section and extends with its free end into the toe region to achieve high elasticity for the front part of the foot in conjunction with high energy storage capacity when the front part of the foot is stressed, has at least a plantar flection and a dorsal flection, the top section and the bottom section enclosing a top and bottom angle respectively with the oblique Z-bar and delimiting rear and front wedge-shaped cavities respectively.
Claims18
A prosthetic foot having a front part including a toe section, a longitudinal part rearward of said front part, a top edge for non-articulate connection of said prosthetic foot to an artificial leg and a resilient foot insert located inside said prosthetic foot for receiving and transmitting stresses, said resilient foot insert comprising:
- a top horizontal section forming said top edge;
- a bottom horizontal section of more extended length than said top section having a free end extending into said toe section of said prosthetic foot for providing a high degree of elasticity for said front part of said prosthetic foot and a high degree of energy storage capacity when said front part of said prosthetic foot is stressed;
- and
- an oblique Z-bar section joining said top section and said bottom section in said longitudinal part of said foot to form an approximately Z-shaped construction;
- said top section and said bottom section, respectively with said oblique section, enclosing a top angle forming a top rear wedge-shaped cavity and enclosing a bottom angle forming a bottom front wedge-shaped cavity;
- said top section, said bottom section, and said oblique section together enabling at least one of plantar flection, dorsal flection, and axial compression for said prosthetic foot;
- said plantar flection occurring as said top angle is reduced in a plane perpendicular to a pelvis of a wearer and parallel to a direction of walking;
- said dorsal flection occurring as said bottom angle is reduced;
- said axial compression occurring as both said top angle and said bottom angle are reduced by deformation and movement perpendicular to a plane of said perpendicular foot.
Dependencies are inferred from the claim text.