Resorbable Bioceramic Suture Anchors for Osteointegration
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Solution Overview
Problem
Current soft suture anchors face challenges in osteointegration, inflammation, and pullout strength, with existing materials not fully addressing the need for resorbable compositions that are completely replaced by bone and do not cause acidic metabolites during degradation.
Innovation Solution
Development of soft suture anchors made from bioceramics, resorbable materials, and their combinations, specifically using poly-4-hydroxybutyrate (P4HB) with bioceramics like tricalcium phosphate, which improve osteointegration, increase pullout strength, and reduce inflammation by being completely resorbed and replaced by bone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional rigid anchor materials (metal or polymer) are used, then pullout strength is maintained, but osteointegration is poor and inflammation occurs due to non-resorbable materials
Solution Approach 1:
The patent changes the material parameters by using resorbable polymers with controlled degradation rates and specific mechanical properties that match bone tissue, allowing the anchor to gradually transfer load to healing bone while eliminating long-term inflammation from non-resorbable materials
Solution Approach 2:
The patent employs composite material structures combining resorbable polymers with bone graft materials or surface coatings that enhance osteointegration, creating a multi-functional anchor that provides both mechanical fixation and biological stimulation for bone healing
2Reliability
If resorbable polymer anchors are used to reduce inflammation, then osteointegration improves, but pullout strength decreases during the resorption process
Solution Approach 1:
The patent designs the anchor with dynamic properties where the resorbable polymer gradually changes its mechanical characteristics over time, maintaining high strength initially for secure fixation and progressively softening to transfer load to healing bone, with the degradation rate synchronized to the bone healing process
Solution Approach 2:
The patent incorporates preliminary reinforcement elements or structural designs that provide enhanced pullout strength during the critical early healing phase, which gradually relinquish their function as bone healing progresses, ensuring adequate fixation strength is maintained when needed most
3Object-affected harmful factors
If soft suture anchors are used to minimize bone damage, then bone loss is reduced, but fixation security in cortical bone is insufficient
Solution Approach 1:
The patent applies local quality enhancement by adding specific structural features or surface treatments to the soft anchor at critical contact points with cortical bone, providing localized grip or anchoring mechanisms that enhance fixation security without requiring the anchor to be universally rigid or damaging to bone
4Reliability
If bioceramic materials are used to improve osteointegration, then bone replacement is enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent uses composite material approaches where bioceramic particles or layers are integrated with resorbable polymer matrices through manufacturing processes that balance osteointegration enhancement with manufacturing feasibility, creating anchors that promote bone growth while remaining producible using established techniques
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The use of bioceramic and resorbable polymer blends in soft suture anchors enhances osteointegration, increases pullout strength, and decreases inflammation, allowing for smaller bone holes and improved tissue healing without acidic responses.
Implementation Method 1
bioceramics, resorbable materials, and combinations thereof... which improve osteointegration, increase pullout strength, and reduce inflammation by being completely resorbed and replaced by bone
Data Source
Figure 1A
Figure 1B
Figure 2A~2B
AI summary
Compositions and materials for making soft suture anchors comprising materials that improve osteointegration have been developed. These compositions and materials comprise bioceramics, resorbable materials, and combinations thereof. A preferred embodiment comprises a soft suture anchor comprising a resorbable ceramic and a resorbable suture.