Prosthetic foot

The prosthetic foot design addresses space constraints by evenly distributing loads through a charging energy storage device under both heel and forefoot loads, optimizing material usage and adaptability, thus enhancing performance and customization.

WO2026125072A1PCT designated stage Publication Date: 2026-06-18OTTOBOCK SE & CO KGAA
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
OTTOBOCK SE & CO KGAA
Filing Date
2025-12-02
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing prosthetic feet face challenges in achieving high functionality and structural strength within confined spaces, often requiring elaborate spring-damper systems that occupy too much space, and customization is limited due to cosmetic constraints.

⚗Method used

A prosthetic foot design with a proximal fastening element and a distal base spring, featuring an energy storage device that is charged in the same direction under both heel and forefoot loads, utilizing a coupling element and elastomer elements for even load distribution and optimized material usage, allowing for angular mobility and relative movement.

🎯Benefits of technology

The design enables efficient energy storage and material utilization within a small space, providing improved load distribution and adaptability to individual user needs, reducing material usage and enhancing prosthetic foot performance.

✦ Generated by Eureka AI based on patent content.

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  • Figure EP2025085112_18062026_PF_FP_ABST
    Figure EP2025085112_18062026_PF_FP_ABST
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Abstract

The invention relates to a prosthetic foot having a proximal fastening element (10) for fastening the prosthetic foot to a prosthesis device, having a distal base spring (20), relative to which the fastening element (10) is displaceably mounted and which has a toe region (21) and a heel region (22), the heel region (22) being displaced towards a heel-side end (12) of the fastening element (10) when the heel is loaded and charges an energy storage device (30) that is arranged between the fastening element (10) and the base spring (20), the energy storage device (30) being coupled to at least one coupling element (40, 41, 42), which in the event of forefoot loading, charges the energy storage device (30) in the same loading direction as in the event of heel loading.
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