Capsular Bag Adhesion to Intraocular Lens via Thermal Melting
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Solution Overview
Problem
Existing intraocular lenses (IOLs) often result in posterior capsule opacification (PCO) due to residual lens epithelial cell migration, which can impair vision and requires costly and risky laser procedures for correction.
Innovation Solution
Applying energy to a portion of the capsular bag to melt and adhere it to the IOL without cauterization, creating a seal around the optic and haptics to prevent cell migration and enhance rotational stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing IOL designs are used with sharp edges around the optic, then PCO is partially inhibited, but PCO is not completely eliminated and requires additional laser procedures
Solution Approach 1:
The patent utilizes the phase transition of collagen from triple-helix to random coil structure through controlled thermal heating. By applying energy to heat the collagen in the capsular bag to a temperature sufficient to induce this phase transition (melting point), the collagen denatures and adheres to the IOL surface, creating an effective barrier against PCO without requiring additional laser procedures
Solution Approach 2:
The patent replaces the mechanical sharp edge design with a thermal/chemical approach. Instead of relying on physical sharp edges to inhibit cell migration, the invention uses controlled heating to denature collagen and create an adhesive seal between the capsular bag and IOL, substituting mechanical prevention with a thermal-chemical mechanism
2Reliability
If energy is applied to melt and adhere the capsular bag to the IOL, then PCO is reduced or eliminated, but there is risk of affecting the patient's vision
Solution Approach 1:
The patent applies energy locally to specific regions of the capsular bag adjacent to the IOL, creating localized zones of collagen denaturation and adhesion. The heating is confined to the interface between the capsular bag and IOL, leaving the optical path and central vision areas unaffected, thus achieving PCO prevention without compromising visual quality
3Stability of the object's composition
If the capsular bag is adhered to the IOL around the entire periphery, then rotational stability is enhanced, but the procedure complexity increases
Solution Approach 1:
The patent employs periodic or pulsed energy application to achieve circumferential adhesion of the capsular bag to the IOL. By delivering energy in controlled pulses around the periphery, the system achieves uniform collagen denaturation and adhesion without requiring continuous complex intervention, thereby enhancing rotational stability while maintaining procedural simplicity
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
This method reduces or eliminates PCO by forming a seal between the capsular bag and IOL, maintaining vision quality and increasing the stability of the IOL, particularly for toric lenses, leading to better patient outcomes.
Implementation Method 1
applying energy to a portion of the capsular bag. The applied energy is sufficient to melt the portion of the capsular bag without cauterization
Data Source
AI summary
A method for performing an ophthalmic procedure on an eye, the eye having a capsular bag in which an intraocular lens (IOL) has been implanted, includes applying energy to a portion of the capsular bag. The applied energy is sufficient to melt the portion of the capsular bag without cauterization such that the portion of the capsular bag adheres to an adjacent portion of the IOL.