Lens Delivery Handpiece with Ball Lock Ring
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Solution Overview
Problem
Existing lens delivery systems for intraocular lenses (IOLs) lack a handpiece mechanism that can efficiently advance the plunger using both pushing and turning motions, limiting surgeon flexibility and convenience.
Innovation Solution
A lens delivery system handpiece featuring a threaded plunger rod with a ball lock ring, allowing advancement by turning a thumbscrew or knob when locked, and by pushing when unlocked, providing a versatile mechanism for lens insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a plunger mechanism is designed to allow both pushing and turning motions for advancement, then surgeon flexibility and ease of operation are improved, but device complexity increases due to the ball lock ring and threaded rod mechanism
Solution Approach 1:
The plunger mechanism is designed to perform multiple functions: it can be advanced by pushing motions when the ball lock ring is unlocked, and by turning the thumbscrew when locked. This multi-functionality allows a single handpiece to accommodate different surgeon preferences and surgical scenarios, improving ease of operation without requiring multiple separate devices
Solution Approach 2:
The ball lock ring provides a dynamic switching mechanism that changes the operational mode of the plunger. When unlocked, the plunger responds to pushing forces; when locked, it engages the threaded mechanism for rotational advancement. This dynamic reconfiguration allows the system to adapt between different operation modes based on surgical needs
2Adaptability or versatility
If a threaded plunger rod with ball lock ring is implemented, then versatility of advancement methods is improved, but manufacturing complexity increases
Solution Approach 1:
The plunger rod is segmented into distinct functional zones: a threaded portion for rotational engagement, a smooth portion for pushing advancement, and connection features for the ball lock ring. This segmentation allows each portion to be manufactured using optimized processes while maintaining overall integration, balancing versatility with manufacturability
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
Enables surgeons to easily and efficiently insert IOLs through a smaller incision by allowing both pushing and turning motions for plunger advancement, enhancing surgical flexibility and ease of use.
Implementation Method 1
A lens delivery system handpiece featuring a threaded plunger rod with a ball lock ring, allowing advancement by turning a thumbscrew or knob when locked
Implementation Method 2
Unlocking the ring allows the plunger to be advanced by pushing on the thumbscrew or knob in a manner similar to a syringe
Data Source
AI summary
A lens delivery system handpiece having a threaded plunger rod with a ball lock ring. Locking the ring causes the plunger to be advanced by turning a thumbscrew or knob. Unlocking the ring allows the plunger to be advanced by pushing on the thumbscrew or knob in a manner similar to a syringe.