Eye Electroporation Needle Support for Rotation-Stable Insertion
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Solution Overview
Problem
Existing needle insertion devices for electroporation in the eye cause eye rotation due to the impact of the needle hitting the surface, requiring bulky clamps and additional operator assistance.
Innovation Solution
A device with a support base and needle configuration that compresses the eye during insertion, using a spherical contact surface and circular rim to stabilize the eye, allowing single-operator insertion with reduced rotation risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If needles are inserted tangentially to the eye surface, then precise positioning is achieved, but eye rotation occurs due to needle impact
Solution Approach 1:
The device applies a preliminary compressive force on the eye globe before needle insertion to counteract the rotational effect that would otherwise occur. The compression mechanism, positioned to bear on the eye globe, generates a force that opposes the moment created by tangential needle insertion, thereby preventing eye rotation during the procedure.
Solution Approach 2:
The compression mechanism acts as an intermediary element between the needle insertion force and the eye globe. Instead of allowing the needle impact to directly cause rotation, the compression mechanism mediates this interaction by providing a counterbalancing force that stabilizes the eye globe during insertion.
2Object-affected harmful factors
If clamps are used to maintain the eye, then eye rotation is prevented, but device complexity and operational difficulty increase
Solution Approach 1:
The invention extracts the essential function of eye stabilization from complex clamp mechanisms and implements it through a simplified compression system. By removing the unnecessary complexity of traditional clamps while retaining the core stabilizing function, the device achieves eye rotation prevention with reduced structural complexity.
Solution Approach 2:
Instead of using external clamps to restrict eye movement, the invention inverts the approach by applying direct compression through a mechanism that bears on the eye globe. This inverted approach achieves stabilization through compression rather than mechanical restriction, simplifying the overall device structure.
3Object-affected harmful factors
If clamps are used to maintain the eye, then eye rotation is prevented, but additional operator assistance is required
Solution Approach 1:
The compression mechanism is designed to be self-regulating, automatically adapting to the eye globe's position and providing appropriate compression force. This self-service capability eliminates the need for additional operators to manually adjust clamps, allowing a single operator to perform the procedure while maintaining eye stability.
Solution Approach 2:
The compression mechanism incorporates dynamic elements that allow it to adapt to the eye globe's movements and maintain optimal compression force throughout the procedure. This dynamic adjustment capability enables single-operator operation by eliminating the need for manual repositioning or adjustment by a second operator.
Data Source
AI summary
A device including a support (4) comprising a support base defining a spherical base contact surface, extending along a virtual sphere (S) and a circular rim extending in a rim plane; a first and a second needle mobile on the support between extracted and inserted positions in which the first and second needles are outside and maximally inserted in said virtual sphere, respectively, via first and second intermediate piercing positions in which, respectively, the first and second needles extend along first and second insertion axis and their tips are located on first and second insertion points belonging respectively to first and second hemispheres of the virtual sphere separated by a “median radial plane of the rim”, an angle (θ) between the median radial plane and any insertion axis being between 70° and 110°.