Shoulder Implant Stabilizing Rotator Cuff via Scaffold

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Solution Overview

Problem

Current treatments for rotator cuff tendon injuries, such as those in the shoulder, often fail to effectively repair or strengthen the tendon, leading to further damage or instability in the shoulder joint.

Innovation Solution

A medical implant with a humeral head attachment region, a glenoid attachment region, and a rotator cuff tendon attachment region, designed to be attached to the humeral head, glenoid, and rotator cuff tendon respectively, providing structural support and stability to the shoulder joint.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If current procedures are used to alleviate impingement or make room for movement, then discomfort is relieved, but the tendon is not repaired or strengthened

Engineering Contradiction:
ImprovediscomfortVSAvoidtendon strength
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent introduces a biological tissue scaffold as an intermediary substance that fills the defect in the rotator cuff tendon. This scaffold serves as a mediator between the damaged tendon areas, providing structural support and enabling healing while relieving impingement symptoms. The scaffold acts as the missing component that allows the tendon to function properly without causing discomfort.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Strength

If biological tissue scaffolds are used to reinforce degenerated rotator cuff tendons, then tendon reinforcement is achieved, but clinical outcomes are variable due to chronicity and degree of degeneration

Engineering Contradiction:
Improvetendon reinforcementVSAvoidclinical outcome consistency
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent applies local quality by designing a scaffold with specific structural characteristics tailored to the local defect in the rotator cuff tendon. The scaffold includes a porous structure with controlled pore size and distribution that matches the local tissue requirements, providing reinforcement where needed while maintaining flexibility. This localized optimization addresses the variability in clinical outcomes by customizing the scaffold properties to match the specific degeneration pattern.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent employs composite materials by combining biological tissue scaffold with structural support elements. The scaffold is constructed using composite construction techniques that integrate multiple materials or layers, creating a structure that provides both reinforcement and biological compatibility. This composite approach ensures consistent clinical outcomes by creating a unified structure that addresses both the mechanical weakness and biological requirements of the damaged tendon.

Inventive Principle:
Principle #40Composite materials

3Stability of the object's composition

If superior capsule reconstruction is used to stabilize the joint, then joint stability is achieved, but the complexity of the procedure increases

Engineering Contradiction:
Improvejoint stabilityVSAvoidprocedure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent extracts the essential function of joint stabilization from the complex superior capsule reconstruction procedure. Instead of performing the entire SCR procedure with multiple steps and components, the invention isolates the key function of providing structural support and stability, achieving it through a simpler scaffold implantation procedure. This extraction approach maintains joint stability while significantly reducing procedural complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentEP4110229B1Tendon repair device
Publication Date: 2025.04.09 SMITH & NEPHEW INC
  • EP4110229B1 patent drawingFigure 1
  • EP4110229B1 patent drawingFigure 2
  • EP4110229B1 patent drawingFigure 3

AI summary

A medical implant for treating a shoulder joint. The implant includes a humeral head attachment region configured to be attached to a humeral head of the shoulder joint, a glenoid attachment region configured to be attached to a glenoid of the shoulder joint, and a rotator cuff tendon attachment region configured to be attached to a rotator cuff tendon of the shoulder joint.