Intraocular Lens Delivery With Active Haptic Alignment
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Solution Overview
Problem
Existing intraocular implant delivery systems face challenges in effectively managing and aligning haptics of intraocular lenses during insertion, leading to potential misalignment and rotation, which can compromise surgical precision and outcomes.
Innovation Solution
The system employs fixtures and actuators to actively manipulate the leading and trailing haptics of intraocular lenses, using splay arms and plungers to straighten and align the haptics before delivery, ensuring proper orientation and alignment during insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional delivery systems are used without active haptic manipulation, then the device complexity is reduced, but the manufacturing precision and alignment of haptics during insertion deteriorates
Solution Approach 1:
The delivery system performs preliminary actions by actively manipulating and aligning the haptics before the actual insertion of the intraocular lens. The fixtures and actuators pre-position the haptics in the correct orientation, ensuring proper alignment is achieved before delivery completes, thereby resolving the technical contradiction between precision and complexity.
Solution Approach 2:
Fixtures and actuators serve as intermediary components between the delivery system and the intraocular lens haptics. These intermediaries actively manipulate the haptics to achieve proper alignment and orientation, enabling precise control without requiring direct manual manipulation during insertion, thus balancing precision requirements with system complexity.
2Reliability
If active manipulation of haptics is implemented during delivery, then the reliability of insertion is improved, but the device complexity increases
Solution Approach 1:
The delivery system incorporates self-service mechanisms where fixtures and actuators automatically manipulate the haptics into the correct position without requiring external intervention. The system performs its own alignment and positioning functions, improving reliability by ensuring consistent haptic orientation while managing complexity through integrated automation.
Solution Approach 2:
The system changes the spatial parameters of the haptics during delivery by actively manipulating their orientation and position. Actuators adjust the haptic configuration from a stored state to a delivery-ready state with proper alignment, thereby improving insertion reliability through controlled parameter changes while managing system complexity through automated adjustment mechanisms.
3Stability of the object's composition
If fixtures are used to actively manipulate haptics, then the stability of lens insertion is improved, but the ease of operation deteriorates
Solution Approach 1:
The delivery system merges multiple functions into integrated fixtures and actuators that simultaneously manipulate both haptics. By combining alignment, positioning, and stabilization functions into unified components, the system improves insertion stability while maintaining operational simplicity through consolidated control mechanisms rather than separate manual adjustments.
Data Source
AI summary
An apparatus for eye surgery may comprise a nozzle having a delivery lumen, an implant bay coupled to the nozzle, and an implant disposed in the implant bay. The implant may comprise an optic body, a leading haptic, and a trailing haptic. In some examples, the implant may be an intraocular lens. The apparatus may further comprise an actuator comprising a housing and a plunger disposed within the housing and a leading splay arm operable to splay the leading haptic within the implant bay. The plunger can be operable to advance the optic body from the implant bay to the delivery lumen after the leading splay arm straightens the leading haptic.