Artificial Lens Fixing Sac for Cataract Surgery
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Solution Overview
Problem
Existing methods for secondary artificial lens implantation, such as sutured posterior and non-sutured posterior lens fixation, face challenges like tilting, corneal astigmatism, increased surgical complexity, and risk of infection.
Innovation Solution
An artificial lens fixing sac with an implantation hole and fixing threads is designed to stabilize the artificial lens within an internal space, guided by a haptic part, while minimizing complications like corneal damage and intraocular pressure increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sutured posterior artificial lens implantation is performed to fix the artificial lens to the ciliary sulcus, then the artificial lens can be implanted, but the artificial lens may deviate from center and tilt, causing corneal astigmatism and poor eyesight
Solution Approach 1:
The patent introduces a fixing sac as an intermediary device between the artificial lens and the ciliary sulcus. The sac receives the lens and secures it through fixing threads anchored in the ciliary sulcus, eliminating direct suturing of the lens itself. This mediator approach prevents lens tilting and centering issues while maintaining secure fixation.
2Reliability
If non-sutured posterior artificial lens fixation using sclera tunnel is performed, then lens fixation complications are reduced, but the surgical technique becomes more complicated and requires more time
Solution Approach 1:
The patent divides the fixation system into separate functional components: the fixing sac (receiving the lens), the fixing threads (providing anchorage), and the ciliary sulcus (attachment site). This segmentation allows each component to be optimized independently and simplifies the surgical procedure compared to creating sclera tunnels.
3Reliability
If non-sutured posterior artificial lens fixation using sclera tunnel is performed, then lens fixation complications are reduced, but the risk of infection increases
Solution Approach 1:
The patent extracts the lens fixation function from the sclera tunnel approach and relocates it to the ciliary sulcus using a fixing sac. This extraction eliminates the need for sclera incisions, thereby removing the associated infection risk while maintaining effective lens fixation.
4Manufacturing precision
If protruding portions are formed at preset intervals on the body to support the artificial lens, then the lens position can be maintained, but it becomes difficult to handle and spaces between protruding portions prevent easy fixation
Solution Approach 1:
Instead of forming protruding portions on the fixing sac body to support the lens, the patent inverts the approach by creating a recessed receiving space within the sac that cradles the lens. The haptic portion of the lens engages with this recessed space, providing stable positioning while maintaining ease of surgical handling.
Data Source
AI summary
The present disclosure provides an artificial lens fixing sac for fixing an artificial lens for cataract surgery. The artificial lens fixing sac for fixing an artificial lens for cataract surgery of the present disclosure is installed at a position of a lens that is removed by cataract surgery, and the artificial lens fixing sac includes an implantation hole in which an artificial lens, which is inserted into an internal space of the artificial lens fixing sac, is implanted at the position of the removed lens, and fixing threads installed at predetermined intervals on an outer peripheral edge of the artificial lens fixing sac to fix the artificial lens fixing sac to a sclera.