Intraocular Lens Insertion Tool Visual Alignment Indicator
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Solution Overview
Problem
Existing intraocular lens insertion apparatuses face issues with abnormal behavior of the intraocular lens due to incomplete insertion through the incision, as indicators cannot determine if the opening member is outside the external flap of the incision, leading to improper insertion length control.
Innovation Solution
An intraocular lens insertion apparatus with a visual indicating means that ensures the entire opening member is inside the cornea or sclerocornea relative to the external flap, allowing for controlled insertion length and preventing abnormal lens behavior by using a distal end member shape that indicates proper alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the opening member is positioned outside the external flap of the incision, then the intraocular lens insertion apparatus can be inserted through the incision, but the intraocular lens exhibits abnormal behavior and cannot be inserted normally
Solution Approach 1:
The patent employs visual feedback through indicators (such as colored bands or markings on the distal end member) that allow the surgeon to determine the positional relationship between the opening member and the external flap. This feedback mechanism enables real-time adjustment to ensure proper positioning, resolving the contradiction between ease of insertion and insertion reliability.
Solution Approach 2:
The patent introduces an intermediary visual indicator system that mediates between the opening member position and the surgeon's perception. These indicators serve as a communication bridge, allowing the surgeon to infer the relative position of the opening member with respect to the external flap without direct visual contact, thereby ensuring reliable lens insertion.
2Length of moving object
If the distal end member length is reduced to minimize incision size, then patient burden is reduced, but the ability to control insertion length and prevent abnormal lens behavior is compromised
Solution Approach 1:
Visual indicators positioned at specific locations on the distal end member provide feedback about insertion depth and positioning. This allows the surgeon to control insertion length accurately even with a shortened distal end member, maintaining reliability while reducing patient burden.
Solution Approach 2:
The patent replaces reliance on mechanical length constraints with visual indication systems. Instead of depending solely on the physical length of the distal end member to ensure proper positioning, the system uses visual feedback mechanisms that allow precise control regardless of the actual length, enabling shorter designs without sacrificing reliability.
3Measurement precision
If visual indicators are added to show opening member position, then insertion accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by placing visual indicators only at specific critical locations on the distal end member rather than throughout the entire device. This selective placement provides necessary position detection accuracy while minimizing the addition of complex components, thus balancing measurement precision with device simplicity.
Data Source
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AI summary
An intraocular lens insertion apparatus includes a distal end member which is inserted through an incision in an eyeball of a patient, an opening member provided for the distal end member through which an intraocular lens is ejected, and an indicating means provided for the distal end member. The indicating means is used for indicating that an entire part of the opening member is inside a cornea of the eyeball or inside a sclerocornea of the eyeball with respect to an external flap of the incision.1