Enhanced Thigh Prosthetic Component with Adjustable Pivot Point and Integrated Flexion Sensor

Publication ID: 24-11857394_0001_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Thigh Prosthetic Component with Adjustable Pivot Point and Integrated Flexion Sensor,” Published Technical Disclosure No. 24-11857394_0001_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857394_0001_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,394.

Summary of the Inventive Concept

An advanced thigh prosthetic component with an adjustable pivot point and integrated flexion sensor, enabling customized fit, improved flexibility, and real-time feedback for users.

Background and Problem Solved

The original thigh prosthetic component patent (PCT/EP2019/061844) has limitations in terms of adjustability, flexibility, and user feedback. The new inventive concept addresses these limitations by introducing an adjustable pivot point, integrated flexion sensor, and customizable components, providing a more efficient, safer, and user-friendly prosthetic solution.

Detailed Description of the Inventive Concept

The enhanced thigh prosthetic component features a knee joint with an adjustable pivot point, achieved through a movable ventral articulated arm and a fixed dorsal articulated arm. This design enables customized fit and improved flexibility. Additionally, an integrated flexion sensor provides real-time feedback to the user during flexion of the knee joint, enhancing user experience and safety. The component also includes a system for adjusting the maximum flexion of the knee joint, comprising a proximal knee joint upper part and a distal knee joint lower part operatively connected by a ventral articulated arm and a dorsal articulated arm.

Novelty and Inventive Step

The new claims introduce the concept of an adjustable pivot point, integrated flexion sensor, and customizable components, which are not present in the original patent. These innovations provide a significant improvement over the existing prosthetic component, offering enhanced flexibility, adjustability, and user feedback.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include variations in the design of the articulated arms, such as using different materials or geometries. Additionally, the integrated flexion sensor could be replaced with other types of sensors, such as pressure or acceleration sensors, to provide different types of feedback to the user.

Potential Commercial Applications and Market

The enhanced thigh prosthetic component has significant commercial potential in the orthopedic and prosthetic industries, particularly in the areas of customized prosthetics and rehabilitation. The integrated flexion sensor and adjustable pivot point could also be applied to other types of prosthetic components, such as knee or ankle prosthetics.

CPC Classifications

SectionClassGroup
A A61 A61F2/64
A A61 A61F2/642
A A61 A61F2/6607
A A61 A61F2/74
A A61 A61F2002/6614

Field of Art

Prosthetic limb design, specifically lower limb and knee joint biomechanical systems, requiring advanced mechanical engineering, biomechanical knowledge, and expertise in orthopedic device design

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or mechanical engineer with specialized training in prosthetic design, familiar with articulated joint mechanisms, material science, and human biomechanical requirements

Obviousness Rationale

A PHOSITA would recognize that the PTD's variations represent predictable engineering modifications to the source patent's knee joint design, utilizing standard design optimization techniques and known mechanical principles to enhance prosthetic component functionality and user customization.

Obvious Combinations & Variations

Source Patent Element
Knee joint with proximal and distal components connected by articulated arms
PTD Variation
Adding an integrated flexion sensor to provide real-time user feedback during joint movement
Obviousness Reasoning
Incorporating sensors into mechanical systems is a known technique in prosthetic design, representing a predictable application of existing sensor technologies to improve user experience and device monitoring
Source Patent Element
Fixed articulated arms connecting knee joint components
PTD Variation
Introducing a movable ventral articulated arm to create an adjustable pivot point
Obviousness Reasoning
Modifying joint articulation mechanisms to increase adjustability is a standard design approach in prosthetic engineering, representing an obvious solution to improve individual user fit and comfort
Source Patent Element
Basic knee joint flexion stop mechanism
PTD Variation
Implementing a dynamic pivot point with U-shaped and cylindrical cross-section articulated arms
Obviousness Reasoning
Exploring alternative geometric configurations for joint components is a routine design optimization strategy, with predictable mechanical performance variations that a skilled engineer would readily conceive
Source Patent Element
Thigh prosthetic component with basic connection mechanisms
PTD Variation
Adding countersunk screws for secure articulated arm attachment to shaft seat
Obviousness Reasoning
Utilizing standard mechanical fastening techniques represents a known method of improving component stability and alignment, constituting an obvious design enhancement
Source Patent Element
Knee joint with adjustable maximum flexion
PTD Variation
Introducing alternative sensor types like pressure or acceleration sensors for user feedback
Obviousness Reasoning
Substituting equivalent sensor technologies is a predictable design choice within the capabilities of a PHOSITA, representing a straightforward technical variation
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857394, a Person Having Ordinary Skill In The Art would find the technical variations disclosed herein to be obvious extensions of the prior art, representing predictable engineering modifications that do not rise to the level of non-obvious invention. The proposed design elements constitute routine optimization and combination of known prosthetic component techniques, thereby rendering subsequent claims of novelty invalid under 35 U.S.C. Section 103.

Original Patent Information

Patent NumberUS 11,857,394
TitleThigh prosthetic component