Eye Suction Ring With Fluid Vessel For Intraocular Pressure Control
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Solution Overview
Problem
Existing eye surgery suction rings face challenges with intraocular pressure management and positioning accuracy, which can lead to treatment errors or injuries due to mechanical forces and optical aberrations caused by applanation elements.
Innovation Solution
A suction ring device with a vessel element that holds a fluid with a refractive index matching the cornea, ensuring secure sealing and minimizing optical aberrations, and featuring multiple suction areas with adjustable negative pressure to manage intraocular pressure and improve positioning precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a suction ring with applanation elements is used to fix the eye, then positioning is achieved, but intraocular pressure increases causing potential damage
Solution Approach 1:
The suction ring is divided into multiple independent suction areas (first suction area for positioning, second suction area for corneal contact) that can be controlled separately. This allows the positioning function to be achieved without excessive pressure on the cornea, as each area operates at optimized pressure levels for its specific function.
Solution Approach 2:
A fluid-filled vessel element is introduced as an intermediary between the suction ring and the cornea. This fluid medium distributes pressure more evenly and prevents direct mechanical contact that would cause high localized intraocular pressure, while still maintaining secure positioning.
2Stability of the object's composition
If applanation elements are used to secure the cornea, then stable positioning is achieved, but optical aberrations are introduced
Solution Approach 1:
The fluid-filled vessel element acts as an optical intermediary with a refractive index matching the cornea. This eliminates the air-cornea interface that causes optical aberrations, while the fluid pressure maintains stable positioning of the cornea against the suction ring.
Solution Approach 2:
The fluid in the vessel element is selected to have a refractive index homogeneous with that of the cornea. This optical homogeneity eliminates refraction and reflection at the interface, preventing optical aberrations while maintaining mechanical stability through fluid pressure.
3Measurement precision
If mechanical forces are applied to hold the suction ring, then positioning is achieved, but treatment errors or injuries may occur due to head movement
Solution Approach 1:
The suction ring incorporates multiple independently controllable suction areas that can be adjusted to maintain positioning despite head movement. The distributed suction forces provide more stable attachment than a single pressure point, reducing the impact of mechanical disturbances during treatment.
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
The device provides secure coupling to the eye with reduced risk of injury and optical aberrations, ensuring precise and safe laser treatment by maintaining a stable and controlled environment for the cornea during eye surgery.
Implementation Method 1
a suction area designed to draw the suction ring to the eye by generating negative pressure in the suction area
Implementation Method 2
holding a fluid with a refractive index matching the cornea, ensuring secure sealing and minimizing optical aberrations
Implementation Method 3
Pulsed laser radiation is used in eye surgery... The laser radiation causes a photodisruptive or photoablative process in the corneal tissue, leading to tissue separation or removal
Implementation Method 4
Pulsed laser radiation is used in eye surgery, for example, to make incisions in the cornea or to remove (ablate) corneal tissue
Data Source
Figure 1~2b
Figure 3~4
Figure 5~6
AI summary
The eye suction device (2) has a suction area (6), which is formed to suck the suction ring onto an eye (18) in the insert and a functional element (12). The eye suction device or the functional element comprises another suction area, which is formed to suck the function element to the suction device in the insert.